AUTOMATIC EXTINGUISHING DEVICE FOR A CHIMNEY

Abstract

 The invention relates to an extinguishing device (1) with a temperature-dependent sealing element (20), the extinguishing device (1) comprising a container (10) with a container volume (11), the container (10) comprising a first side (13) with an opening (12) with the temperature-dependent sealing element (20), wherein the temperature-dependent sealing element (20) comprises a material (25) that weakens at a pre-defined change temperature, and wherein the temperature-dependent sealing element (20) is configured to at least partly open the opening (12) upon exposure to the selected change temperature or a higher temperature, wherein the change temperature is selected in the range of 400-1000°C, wherein the container volume (11) comprises a first extinguishing medium (30) with a first volume (31) and a sweeping element (60).

Description

Field of the invention

[0001] The invention relates to a device for extinguishing a chimney. The invention also addresses installing such a device, as well as a method for extinguishing a chimney fire in a chimney.

Background of the invention

[0002] The invention relates to an extinguishing device with a temperature-dependent sealing element that can be used for extinguishing a chimney fire. Prior art devices are already known for the extinguishing of a chimney fire. For example, US4260023 describes an automatic fire extinguisher for a chimney using a float-operated flag. This device provides a method for automatically extinguishing a fire that may occur in a chimney by making use of an indication flag that rises if the extinguishing fluid is released onto a fire in the chimney to which the fire extinguisher has been installed. The device contains an elongated, refillable container mounted in the top of the chimney; furthermore, it comprises a diffuser on its underside that will produce a spraying effect when the fluid comes into contact with it. A suitable extinguishing medium, such as a sodium bicarbonate solution, is described in this document.

Summary of the invention

[0003] Disadvantages of known devices include the use of complex systems, and/or chemicals, and that the extinguishing in particular is directed towards the flames at the entrance of the chimney (i.e. closest to the source of the fire).

[0004] The current invention aims to eliminate these disadvantages using a relatively simple but effective solution. It has been found that the fire in a burning chimney can be brought under control faster by extinguishing the fire at the bottom of the chimney, as well as by removing (at least partly) the flammable or burning (creosote) deposits that may be attached to the inner wall of the chimney. The current invention provides therefore, in its first aspect, an extinguishing device with a temperature-dependent sealing element; the extinguishing device, in particular is configured for, at least partly, arranging in a chimney; the extinguishing device comprises a container with a container volume; the container comprises a first side with an opening with the temperature-dependent sealing element, wherein the temperature-dependent sealing element comprises a material that weakens at a pre-defined change temperature, and wherein the temperature-dependent sealing element is configured to at least partly open the opening upon exposure to the selected change temperature or a higher temperature, wherein the change temperature is selected in the range of 250-1100°C, such as 400-1100°C, in particular 400-1000°C, such as in the range of 400-800°C, in particular 500-800°C, wherein the container volume comprises a first extinguishing medium with a first volume, in particular, comprising a heat-resistant particulate material such as sand.

[0005] The extinguishing device according to the invention comprises at least a first extinguishing medium comprising a heat-resistant particulate material. In particular, the extinguishing medium comprises of a heat-resistant particulate material comprising an abrasive and sweeping property, in particular in order to remove any creosote deposits from the inner wall of a chimney during the extinguishing action.

[0006] In particular, the first extinguishing medium further comprises a fluid with an evaporation temperature (at 1 bar pressure) lower than 300°C. In particular the first extinguishing medium, as well as any further optional extinguishing mediums, comprises environmentally-friendly non-toxic materials. In an embodiment, the heat-resistant particulate material can be a salt, such as table salt or soda. In another embodiment, the heat-resistant particulate material is sand. In an advantageous embodiment, the first extinguishing medium is sand. The expert shall understand that other solids and liquids can be used to meet the above-mentioned description. When the term, "sand" (in relation to an extinguishing medium) is used in this document, this can therefore be read as "a dry, heat-resistant particulate material". When the term, "water" (in relation to an extinguishing medium) is used in this document, this can also be read as "a liquid with an evaporation temperature (at 1 bar pressure) lower than 300°C".

[0007] In particular, in the event of a chimney fire, the water in a mixture of sand and water may be converted into water vapour (steam) by the high temperature, and in this way will build up pressure in the (closed) container. This pressure can facilitate an outflow of the extinguishing medium from the container. In particular, the water and the steam may extract additional heat from the fire. The sand released from the mixture of sand and water will in particular have a further quenching effect. In addition, the sand can provide an abrasive and sweeping operation on the inner wall of the chimney.

[0008] In particular, the extinguishing device may comprise a sweeping element that is configured to provide a (further) sweeping operation on the inner wall of the chimney (after the extinguishing device has released its contents in the event of a chimney fire).

[0009] In further aspects, the invention provides methods for providing an extinguishing device in a chimney according to the invention, a method for making a chimney comprising an extinguishing device according to the invention, and a chimney obtainable according to said method. The invention also provides a method for extinguishing a chimney fire, wherein the chimney fire is automatically extinguished using an extinguishing device according to the invention.

[0010] A chimney is often used for the disposal of flue gases from an (open) fireplace, stove, or other type of fireplace (herein referred to as, "fireplace"). During normal use of the fireplace, tar and soot particles ("creosote") can accumulate in the chimney, in particular against the inner wall of the chimney flue (hereinafter referred to as, "flue"). The presence of this accumulated creosote increases the risk of a chimney fire occurring. In the event of a chimney fire occurring, it is not only the fuel in the fireplace that burns, but also the deposits in the flue. To quickly bring the chimney fire under control, it is especially important to reduce or, in particular, extinguish the fire fuelled by the deposits on the inner wall of the flue. The current invention is directed in particular to bringing the fire under control by removing the deposits on the inner wall of the flue of the chimney. The fire can be brought under control by removing the creosote deposits, by extinguishing the fire in the fireplace, cooling the flue, and removing the oxygen in the flue. In particular, the invention is directed towards bringing the fire under control by removing the creosote deposits (on the inner wall) in the chimney flue. In particular, this is further supported by measures that promote extinguishing the fire in the fireplace, cooling the flue, and removing oxygen from the flue.

[0011] The extinguishing device according to the invention can be arranged in the flue of a chimney, in particular at a location downstream of the fireplace (which usually means above the fireplace), in which the extinguishing device in particular is arranged in such a way that an extinguishing medium can leave the container under the force of gravity via the opening if the opening is opened (the temperature-dependent sealing element does not, at least partly, block the opening). Upstream and downstream are defined herein such that (a flue in) a chimney may be characterised as the downstream side and the upstream side, wherein in the event that the fireplace is being used and connected to the chimney, the smoke (and warm air) spontaneously flows from the upstream side to the downstream side of the chimney. The location can be chosen in such a way that, during normal use of the fireplace (with the fire in the fireplace, but no fire in the chimney), the temperature of the flue gas that comes into contact with the extinguishing device is approximately 200°C, and in particular under 300°C.

[0012] In the event of a chimney fire, the temperature of the flue gas will increase. Upon reaching a certain temperature, the temperature-dependent sealing element will open the opening, at least partly, and the (first) extinguishing medium will be released from the container and flow out under the force of gravity and, optionally, under other forces. The temperature-dependent sealing element is configured to open the opening, at least partly, at a given temperature (change). For this, in an embodiment the temperature-dependent sealing element comprises a temperature-dependent mechanical mechanism, in particular a mechanism that assumes a different position at a given temperature, and thus makes the opening of the opening possible, while it prevents the opening of the opening at a lower temperature. In a particular embodiment, this change temperature can be set. In a further embodiment, the temperature-dependent sealing element comprises a material that loses its mechanical properties at a specified temperature (change), causing it, in particular to become weakened resulting, in particular in causing the material to deform, disintegrate or melt. In an embodiment, the temperature-dependent sealing element comprises a plastic that weakens, in particular disintegrates, at a certain temperature, such as a thermosetting plastic. In another embodiment, the temperature-dependent sealing element comprises a plastic that is weakened, in particular deforms and/or melts, at a certain temperature, such as a thermoplastic polymer. Examples of applicable polymers are polyimides (such as kapton), polyamide-imides, and a polyether ether ketone (PEEK). In yet a further embodiment, the temperature-dependent sealing element comprises a metal that is weakened, in particular deforms or melts, at a certain temperature (for example, aluminium (660°C), zinc (420°C), lead (327°C), or bismuth (271°C), copper (1090°C), or certain alloys of (one or more of these) metals. In an embodiment, the temperature-dependent sealing element comprises one or more materials selected from the group consisting of aluminium, zinc, lead, bismuth, a polyimide (such as kapton), a polyamide-imide, and a polyether ether ketone (PEEK). Alternatively, a polyethylene terephthalate may also be used. Accordingly, the term "weakening" means in particular to deform, disintegrate or melt. Because of the weakening, and possibly due to pressure build-up in the container, the temperature-dependent sealing element will be so weakened, or even removed, whereby the opening on the first side is opened for a withdrawal of at least a part of the contents of the container, in particular the extinguishing medium, and for example the sweeping element. This means the opening is therefore opened, at least partly, when exposed to the change temperature.

[0013] The change temperature is in particular selected in the range of 250-1100°C, such as in the range of 400-1100°C, in particular 400-1000°C, such as from the range of 400-800°C, in particular 500-800°C. In an embodiment, the change temperature is selected from the range of 600°C or lower. Of course, a material that weakens at a temperature of, for example, 400°C, will also weaken at higher temperatures. The change temperature relates in particular to the lowest temperature at which the material becomes weakened, in particular in such a way that the sealing element melts, disintegrates, etc., and opens the opening. The sealing element is in particular selected such that, at least partly, the opening will be opened within a time of between 5 seconds and 10 minutes so that the extinguishing medium, and optional sweeping element, can be released from the container.

[0014] When configuring the extinguishing device, the sealing element will be arranged in particular in such a way that it completely seals the opening. To this end, the sealing element (and, in particular, the container as well) comprises screw thread embodiments, in particular in order to screw the sealing element to the container. In other embodiments, the sealing element is arranged to be clamped in the opening. In yet further embodiments, the sealing element is configured to be arranged (clamped) on the container, in particular in order to block the opening. In embodiments, the sealing element is further configured to be remote. A removable sealing element is in particular advantageous because this makes it possible to refill the extinguishing device. In further embodiments, the fire-extinguishing device comprises at least one second closable opening configured to allow the refilling of the extinguishing device. The extinguishing device is in particular refillable.

[0015] The container itself must be resistant to the high temperatures that naturally occur in a chimney, as well as to the temperature that can be reached at the location where the extinguishing device is arranged upon (initiation of) a chimney fire. Materials that are able to withstand temperatures that can be reached in the event of a chimney fire (between 300°C and 1000°C or even higher in a long-term chimney fire) are, for example, iron, steel, stainless steel, and certain metal alloys, such as nickel-chromium alloys. In particular, the container comprises stainless steel. The container can in particular have a cylindrical shape. However, the container may also take other forms. In particular, the container is elongated. For example, the length of the container can be between 0.3 metres and 4 metres, such as 0.5 metres and 2.5 metres.

[0016] If the opening is opened (at least in part) by the temperature-dependent sealing element (during a chimney fire), it is possible for the extinguishing medium to leave the container. The extinguishing medium (sand) will flow along the flue wall and have an abrasive and (chimney) sweeping effect on the inner wall (of the flue) of the chimney. In particular, as a result, at least part of the (burning) creosote deposits will be removed and transported to the upstream side of the flue.

[0017] The invention further provides a (chimney) sweeping element that can be applied for removing the creosote deposits, in particular a sweeping element can be comprised in the extinguishing device, in particular in the container. This element will be released after the container is (at least partly) opened. After leaving the extinguishing device, this sweeping element will provide an abrasive and sweeping operation on the inner wall (of the flue) of the chimney and attack any creosote deposits that may be present (on the inner wall of the flue) to (further) remove it. The sweeping element is in particular configured to fit in the container, and to touch and be able to sweep at least part of the (creosote polluted) inner wall (of the flue) of the chimney (with an extremity of the sweeping element) after leaving the container. In particular, the cross-section of the sweeping element (if this is not comprised in the container) is so large that the sweeping element can sweep at least a part of the inner wall, in particular at least more than 25%, such as more than 50%, or in particular more than 75% of the surface of the inner wall (of the flue) of the chimney. The term "sweeping element" may also refer to a multitude of sweeping elements.

[0018] In an embodiment, the cross-section of the sweeping element (in a second configuration) external to the container comprises a circular shape. In particular, this embodiment can be advantageous when used for sweeping a chimney (extinguishing a chimney fire in a chimney) with a circular cross-section. In another embodiment, the cross-section of the sweeping element (in a second configuration) external to the container comprises a square shape, which is suitable in particular for a chimney with a square cross-section. In yet a further embodiment, the cross-section of the sweeping element (in a second configuration) external to the container comprises a rectangular shape, which is suitable in particular for the sweeping of a chimney with a rectangular cross-section. In yet a further embodiment, the cross-section of the sweeping element (in a second configuration) comprises a flower shape, in particular wherein the shape of the flower petals can adapt themselves under (external) pressure. In a further embodiment, the cross-section can comprise, or is adapted to, multiple shapes such as circular, square, rectangular or any other regular or irregular shape in particular to be able to sweep a cross section of a chimney with a similar shape.

[0019] Furthermore, a cross-section of the sweeping element in a first configuration (if it is contained in the container) is in particular so small that the sweeping element fits in the container. In an embodiment, the extinguishing device, in particular the container, further comprises a sweeping element with extremities, wherein the sweeping element is configured to comprise a first cross-section in a first configuration in the container and a second cross section, larger than the first cross section, in a second configuration (if the sweeping element has left the extinguishing device via the opening, in particular during a chimney fire) external to the extinguishing device for the purpose of sweeping an inner wall of a (for arranging the extinguishing device in the intended) chimney.

[0020] The sweeping element in particular comprises one or more elements (such as bristles) compressed in the container, close(r) to a body axis of the sweeping element, and that can extend external to the container (if there is enough space) away from the body axis. In its uncompressed state, the extremities of the sweeping element may be located further from the body axis than when it is in its compressed state in the container. These elements can in particular be used to sweep the chimney wall. Such elements may comprise in particular spring elements. In particular, these elements are flexible.

[0021] In a further embodiment, the extinguishing device, in particular the container, comprises a sweeping element with extremities with a longest distance relative to a body axis of the sweeping element, wherein the sweeping element is configured such that the longest distance in a first configuration of the sweeping element in the container is shorter than in a second configuration of the sweeping element external to the extinguishing device, in particular the sweeping element is configured for the sweeping of the inner wall of a chimney.

[0022] The invention also, therefore, provides an extinguishing device with a temperature-dependent sealing element, (the extinguishing device configured for at least partial arrangement in a chimney), the extinguishing device is comprising a container with a container volume, the container comprising a first side with an opening with the temperature-dependent sealing element wherein the temperature-dependent material comprises a sealing element that weakens at a predefined change temperature, and wherein the temperature-dependent sealing element is configured to open the opening, at least partly, when exposed to a selected temperature or a higher temperature, at which the temperature chosen is in the range of 250-1100°C, such as 400-1100°C, in particular 400-1000°C, such as in the range of 400-800°C, in particular 500-800°C, wherein the container volume comprises a first extinguishing medium with a first volume and a sweeping element with extremities with a longest distance relative to a body axis of the sweeping element, wherein the sweeping element (is configured for the sweeping of an inner wall of a chimney and) is configured in such a way that the longest distance in a first configuration of the sweeping element in the container is shorter than in a second configuration of the sweeping element external to the extinguishing device.

[0023] Therefore, the invention also provides an extinguishing device with a temperature-dependent sealing element (wherein the extinguishing device is in particular configured for at least partial arranging in a chimney), the extinguishing device comprising a container with a container volume, the container comprising a first side with an opening with a temperature-dependent sealing element, wherein the temperature-dependent sealing element comprises a material that weakens at a pre-defined change temperature, and wherein the temperature-dependent sealing element is configured to open the opening, at least partly, upon exposure to the selected change temperature or a higher temperature, wherein the change temperature selected is in the range of 250-1100°C, in particular 400-1100°C, such as 400-1000°C, such as in the range of 400-800°C, in particular 500-800°C, wherein the container volume comprises a first extinguishing medium with a first volume and a sweeping element with extremities, the sweeping element is configured to comprise a first cross-section in a first configuration in the container, and a second cross-section, larger than the first cross-section, in a second configuration, external to the extinguishing device, for the sweeping of an inner wall of a chimney. In particular, the sweeping element is configured such that, in the second configuration, at least a part of the extremities of the sweeping element is able to sweep the inner wall of the proposed chimney.

[0024] The sweeping element is configured to be able to, at least at least partly sweep a chimney, in particular during a chimney fire. For this purpose, the sweeping element will make direct contact with the chimney wall or with the deposits on the chimney wall, and is therefore configured in particular to also be able to provide a sweeping operation at the temperatures that occur during a chimney fire. The sweeping element comprises in particular for this purpose heat-resistant materials, in particular heat-resistant metal. For example, the sweeping element comprises iron or (stainless) steel. In particular, the sweeping element comprises steel, in particular, stainless steel. In an embodiment, the sweeping element comprises a weight. A sweeping element that comprises a weight may be advantageous, in particular if the weight has a mass that is sufficiently large enough to make it possible for the sweeping element to leave the container when the opening is, at least partly, opened. Furthermore, the weight can arrange the sweeping element in the flue (in the right direction) such that the extremities of the sweeping element are able to sweep the inner wall of the chimney as economically as possible.

[0025] Furthermore, in a further embodiment, the sweeping element contains a spring element, in particular wherein the spring element in the second configuration of the sweeping element can extend to the outside and in this way in particular can provide the second cross-section to the sweeping element. The spring element is, in particular in the first configuration of the sweeping element, pressed in or bent (compressed). The spring element is, in particular in the second configuration of the sweeping element, extended (released). The spring element comprises, in particular in the second configuration of the sweeping element, less potential energy than in the first configuration of the sweeping element. The spring element is in particular curved more in the first configuration of the sweeping element than in the second configuration of the sweeping element. In particular, the spring element contains greater mechanical stress in the first configuration of the sweeping element than in the second configuration of the sweeping element. In particular, the sweeping element can be contained in the container if the spring element is compressed (pressed or bent). In particular, the sweeping element can make the sweeping of the chimney wall possible when the spring element is extended. Therefore, in an embodiment, the sweeping element comprises a spring element and a weight, wherein in the second configuration of the sweeping element, the spring element extends outwards and the weight is configured to enable a displacement of the sweeping element in the container, and in particular through the opening that at least partly has been opened, and in the intended chimney under the force of gravity.

[0026] In a further embodiment, the spring element comprises a plurality of resilient bristles that, in the second configuration of the sweeping element, extend outwards, wherein, in particular, the resilient bristles comprise (metal) bristles, in particular (metal) bristles with a diameter selected from the range of 0.1 mm-3 mm, such as from the range of 0.2 mm - 2.5 mm. In particular, the (resilient) bristles are self-supporting. In particular, the bristles do not need to be supported in order to make it possible for the bristles to extend in a direction that is not parallel with the direction of the gravitational field (of the Earth), such as in a direction that is perpendicular to the direction of the gravitational field. In an embodiment, the (metal) bristles comprise steel bristles, in particular stainless steel bristles. In another embodiment, the metal bristles comprise iron bristles. In yet another embodiment, the resilient bristles contain plastic bristles, in particular plastic bristles that are resistant (do not melt, disintegrate, or otherwise lose any of their mechanical properties due to an increase of temperature) to a temperature of at least 400°C, such as at least 600°C, or even at least 800°C, such as at least 1000°C. In yet another embodiment, the resilient bristles contain both metal bristles and plastic bristles. In particular, different resilient bristles may be of unequal dimensions. In an embodiment, different resilient bristles contain different diameters and/or contain different resilient bristles of unequal length. In this way, the longest distance to the body axis of the sweeping element of a first bristle is greater than that of a second bristle, in particular if the first bristle is longer than the second bristle and both the first bristle and the second bristle can extend (in full). However, in this way, the longest distance to the body axis of the sweeping element of a first bristle can also, for example, be as large as (or smaller than) a second bristle, especially if both the first and the second bristle cannot fully extend, in particular if both the first and the second bristle touches the inner wall of a (circular or square) chimney. In yet a further embodiment, a resilient bristle comprises several diameters (over the length of the bristle).

[0027] The bristles need not necessarily be configured as extended bristles, wherein a first bristle end is configured to be closer to the body axis than a second bristle end. A first bristle end and a second bristle end can, for example, both be configured from the body axis of the sweeping element, while a part of the bristle is arranged between the first end and the second end of the body axis of the sweeping element, in particular in the extended position (of the bristle). In such an embodiment, the bristle can form a loop. In particular, during the sweeping of a chimney, a loop that makes contact with the flue wall and the chimney wall over at least a part of the loop is advantageous. In embodiments, the bristles are configured in such a way that a bristle with a part of the bristle about a longitudinal axis of the bristle can sweep a flue. In particular, said part of the bristle is perpendicular to a longitudinal direction of the flue during the sweeping of a flue. In particular, the bristle can sweep the flue with (over) a part of the length of the bristle, in particular, scraping.

[0028] The extinguishing device according to the invention comprises at least a first extinguishing medium comprising a dry, heat-resistant particulate material. In particular, a dry, heat-resistant particulate material that comprises an abrasive and sweeping property, in particular, in order to remove creosote deposits from the inner wall of a chimney during the extinguishing operation. In particular, the first extinguishing medium further comprises a fluid with an evaporation temperature lower than 300°C (at 1 bar pressure). In an advantageous embodiment, the first extinguishing medium contains sand and water. In particular, the container comprises sufficient water that would result in (excess) pressure in the container in the event of a chimney fire, in particular, due to the evaporation of water in the container. In particular, there will be sufficient excess pressure in the container to further support (in part) the opening of the opening due to the temperature-dependent sealing element being exposed to the selected temperature by this excess pressure. In particular, as a result, a larger part of the opening, in particular the entire opening, can be opened, in particular the temperature-dependent sealing element can be pushed out of the container as a result of the over pressure on the weakened (material of the) sealing element. In an embodiment, the first extinguishing medium for this purpose comprises at least 1 g of water per kg of extinguishing medium (0.1 weight % water), such as 1-100 g of water per kg of the extinguishing medium (from 0.1-10 weight %). In a further embodiment, the container, in particular the first extinguishing medium, comprises 0.5-100 g of water per litre (of) container volume, in particular 1-100 g (of) water per litre (of) container volume, more in particular 1-10 g (of) water per litre (o)f container volume. Additionally or alternatively, in an embodiment the container comprises a pressure unit, such as a spring, that provides extra pressure or force onto the temperature-dependent sealing element and/or one or more of the extinguishing mediums and/or the sweeping element (in at least the direction of the opening), and is configured to move the sealing element through the opening (at the moment that the temperature-dependent sealing element is exposed to a temperature equal to, or greater than, the selected temperature). In an embodiment, the first extinguishing medium comprises a (very) small amount of moisture such as up to 10 weight % moisture (i.e. water), in particular at most 1 weight % moisture, even more in particular at most 0.5 weight % moisture, such as up to 0.2 weight % moisture. In particular, the first extinguishing medium comprises a dry extinguishing medium. In an embodiment, the first extinguishing medium comprises 0-10 weight %, such as 0.1-5 weight %, in particular 0.2-2 weight % water.

[0029] In another embodiment, an extinguishing medium, in particular, the first extinguishing medium, may also comprise up to 50 weight % water, and comprises the extinguishing medium in particular at least 10 weight % moisture. In yet another embodiment, the pressure unit is configured to be able to provide the container volume at a pressure (or a force that provides this pressure) of at least 10 bar (in particular during the initiation of a chimney fire). The pressure can be provided by measures as they are described above; by means of steam (water at an elevated temperature) from the water in the extinguishing medium. In a further embodiment, the pressure is provided by a pressure cartridge, in particular a pressure cartridge that releases its pressure (in the container) at a given temperature. In a further embodiment, the pressure unit comprises a carbon dioxide cartridge, in particular a carbon dioxide cartridge that is closed at a temperature equal to or lower than 250°C, and releases its pressure (in the container) at a temperature corresponding to a chimney fire. In another embodiment, the container volume (standard) (also at a temperature of the container volume lower than 250°C, such as lower than 25°C) comprises an elevated pressure, such as a pressure of at least 2 bar over pressure, in particular a pressure of at least 10 bar over pressure.

[0030] In order to be able to guarantee the correct operation of the sweeping element it can in particular be advantageous if the sweeping element does not come into contact with water. In an embodiment, the extinguishing device, therefore, further comprises a first water transport barrier, wherein the first water transport barrier is configured to prevent transport of water from the first extinguishing medium to the sweeping element.

[0031] In embodiments, the extinguishing device further comprises a second extinguishing medium with a second volume and a second water transport barrier, wherein the second extinguishing medium comprises substantially (dry) heat-resistant particulate material, in particular substantially (dry) sand, and wherein the second extinguishing medium is further remote from the temperature-dependent sealing element than from the first extinguishing medium, and the second water transport barrier is configured to prevent a transport of water from the first extinguishing medium to the second extinguishing medium. In particular, in such an embodiment, the second extinguishing medium provides an extinguishing effect to the extinguishing device and the first extinguishing medium can provide an increase in the pressure in the container (and thus support to the removal of the temperature-dependent sealing element in the event of a chimney fire). The invention therefore provides in an embodiment of the extinguishing device, wherein the second volume is greater than the first volume, in particular equal to or more than 2 times as large, such as equal to or more than 5 times as large, and wherein the first extinguishing medium comprises at least 0.1 weight % water, and up to 50 weight % water, in particular wherein the first extinguishing medium comprises at least 10 weight % water and up to 50 weight % water. In a further embodiment, the first extinguishing medium comprises in particular a minimum of 0.1 weight % water and up to 10 weight % water. In particular, the optional second extinguishing medium, in particular, the dry sand, can provide a further sweeping and abrasive action on the inner wall of the chimney.

[0032] In a further embodiment, the extinguishing device further comprises a third extinguishing medium, in particular, configured to extinguish, in particular to provide additional cooling to any fire that may still be present. The third extinguishing medium is in particular arranged in the container in such a way that it can only leave the container if the first extinguishing medium and the second extinguishing medium are no longer in the container. In particular, the third extinguishing medium comprises water, and, in particular, sand, to cool down the fire. Therefore, in a further embodiment, the extinguishing device furthermore comprises a third extinguishing medium with a third volume comprising a mixture of sand and water, wherein the third extinguishing medium is further remote from the temperature-dependent sealing element than from the second extinguishing medium, and the second water transport barrier is further configured for the prevention of a transport of water from the third extinguishing medium to the second extinguishing medium and wherein the second volume is greater than the third volume, in particular more than five times as large, and wherein the third extinguishing medium comprises a minimum of 0.1 weight % water, and comprises up to 50 weight % water, in particular wherein the third extinguishing medium comprises at least 10 weight % water and up to 50 weight % water. In particular, the container comprises an amount of water that, upon reaching a temperature higher than 200°C, can provide an (absolute) pressure in the container that is at least 1.5 bar, in particular at least 3 bar, such as at least 5 bar, in particular at least 10 bar, such as at least 15 bar. In particular, the container comprises an amount of water that, upon reaching a temperature between 200°C and 400°C, can provide an (absolute) pressure in the container of up to 30 bar, such as up to 20 bar, in particular up to 15 bar, such as up to 10 bar.

[0033] In particular, the extinguishing device comprises one or more water transport barriers. In particular, the invention provides a (first) water transport barrier to prevent the transport of water from an extinguishing medium to the sweeping element. In particular, the second water transport barrier is configured to prevent transport of water from the first and/or a third extinguishing medium to the second extinguishing medium. In particular, the water transport barriers are configured to prevent the transport of water in the container, in particular without blocking the displacement (out of the container) of the extinguishing medium and the (optional) sweeping element comprised in the container in the event of a chimney fire (if the opening (at least partly) is opened (as a result of a chimney fire)). In embodiments, the water transport barriers will be annulled at temperatures reached during a chimney fire, in particular by deformation, melting or disintegration of the water transport barrier(s). The water transport barrier(s) therefore comprise in embodiments, a plastic with a specific temperature, in particular a melting temperature or disintegration temperature above 250°C. Plastics with such properties are known in the art and comprise, for example, a polyimide as kapton, a polyamide-imide, and a polyether ether ketone (PEEK). In other embodiments, one or more water transport barrier(s) is/are arranged so that they do not block the operation of the extinguishing mediums and the sweeping element. In yet further embodiments, the second water transport barrier comprises a plastic casing, wherein at least one of the extinguishing media is surrounded by the plastic casing, in particular to prevent a transport of water from the second extinguishing medium. In a further embodiment, at least one of the extinguishing media is surrounded by a plastic casing at least. In an embodiment, an extinguishing medium is surrounded by the second water transport barrier. In a further embodiment, more than one extinguishing medium is surrounded by a second water transport barrier. In yet a further embodiment, all extinguishing mediums are surrounded by second water transport barriers.

[0034] In order to get a chimney fire under control, a minimal amount of extinguishing medium is necessary. In particular, 5-10 litres of extinguishing medium is enough for gaining control of most common chimney fires according to the invention. Extinguishing a chimney fire in a chimney in a tall building, such as a mansion or a factory, will in particular require more than 10 litres of extinguishing medium. The desired amount of extinguishing medium is in particular dependent on the size of the surface area of the chimney wall that must be extinguished or at least brought under control. In particular, the sweeping element requires a minimum volume in the container. In an embodiment, the container volume is therefore selected in the range of 5-50 litres, in particular in the range of 5-20 litres. In a further embodiment, the amount of water is in particular selected according to the surface area of the inner wall of the chimney. In particular, is the size of this surface area proportional to the diameter of a circular flue. In an embodiment, the container volume comprises at least 0.5 litres of water per cm (inner) diameter of the intended chimney flue, in particular at least 0.75 litres, such as at least 1 litre per cm diameter of the intended chimney. In an embodiment, the container comprises a quantity of water, wherein the ratio of water to the (inner) diameter of the intended chimney (flue) is at least 0.5 litre/cm, such as 0.75 litres/cm, in particular 1 litre/cm. In particular, if the intended chimney does not comprise a circular flue, the maximum dimension of a flue can be defined as the maximum distance between two points on the wall of the flue measured by a straight line along a plane perpendicular to the central axis of the flue. In a further embodiment, the container comprises a quantity of water wherein the ratio of the amount of water compared to the maximum dimension of the intended chimney (flue) is at least 0.5 litres/cm, such as 0.75 litres/cm, in particular 1 litre/cm. In particular, the container volume furthermore contains at least 0.2 litres, such as at least 0.5 litres, in particular at least 1 litre for containing the sweeping element.

[0035] The extinguishing device according to the current invention, in particular the first side of the extinguishing device, can be arranged in a chimney, see above. In particular, an embodiment of the fire-extinguishing device comprises a container with a substantially elongated shape, and may substantially the entire container be arranged in the chimney. In particular, the container, in particular the container with an elongated shape, comprises a diameter that is smaller than the diameter of the intended chimney flue or the chimney within which the extinguishing device is arranged. In particular, the diameter of the container comprises up to half of the diameter of the (intended) chimney or if the flue is not circular, the equivalent diameter of the (intended chimney). Herein, the equivalent diameter will be defined as the diameter of a flue with a completely circular cross-section (perpendicular to a longitudinal axis of the flue) which gives the same pressure drop (or has a uniform cross-section) as the equivalent flue with a rectangular cross-section (perpendicular to a longitudinal axis of the flue). For placing the extinguishing device according to the invention, the extinguishing device, in particular comprises a means of positioning. Additionally or alternatively, the extinguishing device may in particular comprise a means of attachment as an addition or an alternative. In particular, the extinguishing device may be arranged in the chimney, in particular at the downstream side (in the flue) of the chimney, wherein the flue is not blocked and smoke (and warm air) is free to leave the chimney via the chimney outlet (or the downstream side of the chimney). For the placement of the extinguishing device, in particular the first extinguishing device, the first extinguishing device, in an embodiment, further comprises a means of positioning arranged at a side of the container remote from the first side and configured to arrange the container in the chimney.

[0036] In embodiments, the extinguishing device comprising a means of positioning, in particular a first extinguishing device, can be hung directly in the chimney. In particular, the means of positioning is configured to rest on the chimney outlet (wherein the container hangs in the chimney). In another embodiment, the means of positioning is configured to be clamped in the chimney (wherein the container is arranged in the chimney). In yet another embodiment, the means of positioning is configured to be mounted in the chimney with means of attachment, such as a bolt, a nut and a screw (wherein the container is arranged in the chimney). In a further embodiment, the means of positioning is configured to arrange the extinguishing device in the chimney at a (pre-) determined location downstream of the chimney outlet. In particular, the means of positioning may hereto comprise a chain to arrange the extinguishing device at different heights in the chimney. In an embodiment, the means of positioning comprises one or more elements protruding relative to the container, in particular the means of positioning comprises one or more, with respect to the container, protruding (extendable) or support (hanging) brackets. In particular, the extinguishing device, in particular, the first extinguishing device, may be easily removed from the chimney. Removal of the extinguishing device is advantageous, for example, at the moment when the chimney is going to be swept, or for inspection of the extinguishing device.

[0037] In an embodiment, the (first) extinguishing device is configured to hang the container is in the chimney, and the means of positioning is configured to be attached to (or in) the chimney outlet without causing a complete closure of the chimney, in particular wherein the means of positioning comprises one or more elements that are protruding with respect to the container. Examples of a means of positioning with one or more protruding elements are a means of attachment with one, two, or three hooks, clamps, teeth, plates, extendable supports, etc. In another embodiment, the means of positioning comprises a plate having one or more smoke openings for the provision of unimpeded passage of the smoke. In a further embodiment, the plate with smoke openings comprises a grating, in particular a grating wherein the mesh openings in the grating comprise smoke openings.

[0038] Embodiments of the extinguishing device, in particular the first extinguishing device, can be hung in a chimney, wherein the extinguishing device is located mainly in the chimney after arrangement in the chimney. In further embodiments, the extinguishing device, in particular herein referred to as a "second" extinguishing device, may be processed in the chimney, such as arranged through the wall of the chimney, wherein a part of the (second) extinguishing device comprising the first side can be arranged on the inner wall of the chimney (flue), and another part of the (second) extinguishing device can be arranged outside the chimney. Some embodiments, when arranged in a chimney, will (in part) be enclosed by the chimney, in particular at least a part of the extinguishing device comprising the first side. In an embodiment, in particular of a second extinguishing device, the extinguishing device comprises a container, wherein the container comprises a first container part comprising the first side and a second container part, wherein the extinguishing device is configured to arrange the second container part outside the chimney and the first container part partially within the chimney. In particular, the extinguishing device may further comprise a means of attachment, wherein the means of attachment is configured to attach the second container part to the chimney. In particular, after arranging the extinguishing device, in particular the second extinguishing device, in a chimney, the first side will be enclosed by the chimney and the second container part will be arranged outside the chimney. A part of the extinguishing device, in particular a part of the first container part may in this case be arranged through a wall of the chimney. In a further embodiment of the, in particular of the second, extinguishing device, a (first) longitudinal axis from the first container part is not run parallel to a (second) longitudinal axis of the second container part and the container is configured to arrange a part of the first container part through a wall of the chimney.

[0039] In an embodiment, a part of the second container part may extend outwards from the chimney after arranging in a chimney. In another embodiment, after arrangement in a chimney, a part of the second container may extend outwards from the chimney in the direction of the lower side of the chimney, in particular parallel to the chimney. In a further embodiment of the extinguishing device, in particular of the second extinguishing device, an angle between a (first) longitudinal axis of the first container part and a (second) longitudinal axis of the second container part is hereto selected in the range of 120 to 150°, wherein the container is configured to arrange the (second) longitudinal axis of the second container part parallel to a (chimney) longitudinal axis of the chimney. In particular, the angle with respect to the second container part is not an acute angle that could block any possible displacement of one or more of the extinguishing mediums and the sweeping element in the direction of the opening. In particular, this angle is configured as an obtuse angle in order to make the release of the extinguishing medium and the sweeping element from the container possible under the force of gravity. In this embodiment, a part of the second container may extend beyond the downstream side of the chimney. In particular, the extinguishing device does not extend up to the downstream side of the chimney.

[0040] The extinguishing device according to the invention is a closed extinguishing device, and will, under normal circumstances, only be automatically switched on in the event of a chimney fire. To guarantee the correct operation, we recommend inspecting the extinguishing device at specified intervals, for example, during the sweeping of the chimney. In embodiments, the container comprises an inspection element for this purpose, configured for inspection of the container volume. In a further embodiment, the inspection element comprises multiple inspection elements. In an embodiment, the inspection element comprises one or more sight glasses in the container, in particular in order to inspect one or more of the group consisting of the first extinguishing medium, the second extinguishing medium, the third extinguishing medium, and the sweeping element. In an embodiment, the inspection element comprises a moisture indicator, in particular a silica gel. Using the moisture indicator, an inspection can be carried out to ensure moisture has not moved from a moist extinguishing medium to a dry extinguishing medium and/or the sweeping element. In an embodiment, the inspection element comprises an indicator that shows the highest temperature the extinguishing device or parts of the extinguishing device have been exposed to. In an advantageous embodiment, the extinguishing device is configured to allow inspection of the extinguishing device (via the inspection element) if the extinguishing device is arranged in a chimney. In another embodiment, the extinguishing device is configured to allow inspection of the extinguishing device (via the inspection element) if the extinguishing device is not arranged in a chimney.

[0041] In a second aspect, the invention provides a method for providing an extinguishing device in a chimney, comprising: (a) providing an extinguishing device according to any one of the preceding claims, in particular wherein the container volume is selected in the range of 5-50 litres, in particular from 5 to 15 litres, and (b) arranging, at least partly, the extinguishing device in the chimney.

[0042] In an embodiment of the method for providing an extinguishing device in a chimney, in particular a first extinguishing device in a chimney, the extinguishing device comprises the means of positioning and wherein arranging (at least in part) of the extinguishing device in the chimney using the means of attachment comprises at least in partly arranging the extinguishing device in the chimney, wherein in particular the first side is arranged entirely in the chimney. As described above, embodiments of the extinguishing device, in particular the first extinguishing device, can be arranged directly in a chimney, in particular by hanging the extinguishing device in the chimney wherein the means of positioning are placed on the chimney outlet. In further embodiments, during the arranging the extinguishing device in the chimney, the means of positioning will be attached in the chimney by means of, for example, clamps, bolts, screws, or other fastening materials. Yet further embodiments of the extinguishing device, in particular the second extinguishing device, can be arranged through the wall of the chimney. In another embodiment of the method for providing an extinguishing device in a chimney, in particular a second extinguishing device in a chimney, arranging the (second) extinguishing device in the chimney comprises at least partly arranging the extinguishing device in the chimney, wherein a part of the first container part comprising the first side is arranged in the flue and the second container part is arranged at an outside the chimney. Therefore, the extinguishing device can be configured with the second container part outside a chimney, and the first container part partially within the chimney.

[0043] In embodiments, the method for providing an extinguishing device in a chimney further comprises providing an opening through the wall of the chimney, in particular for the passage of a part of the first container part. In a further embodiment, the method further comprises a closure of the opening through the wall after the arrangement of the extinguishing device. In an advantageous embodiment, the extinguishing device is attached in such a way that it can be removed, particularly in order to inspect or refill the extinguishing device in order to restore it to its original state.

[0044] In addition, it can be advantageous to also place an extinguishing device in the chimney during the construction of the chimney. In a third aspect the invention provides a method for making a chimney, wherein at least one extinguishing device, in particular at least one second fire extinguishing device, is provided in the chimney during constructing the chimney, and wherein a part of the first container part comprising the first side is arranged in the flue and the second container part is arranged at the outside of the chimney, wherein a (second) longitudinal axis of the second container part is arranged parallel to a longitudinal axis of the chimney. In an embodiment, two (second) extinguishing devices are provided in the chimney during the construction of the chimney. In a further embodiment, at least three, in particular three, and even four, (second) extinguishing devices are provided in the chimney during the construction of the chimney.

[0045] In addition, the invention provides for a chimney with extinguishing device according to the invention and obtainable according to the method for making a chimney. In a further aspect, the invention provides a method for extinguishing a chimney fire comprising an extinguishing device according to the invention or obtainable according to a method for providing an extinguishing device in a chimney according to the invention, comprising exposing the sealing element to a change temperature selected in the range of 250-1100°C, such as 400-1100°C, in particular 400-1000°C, such as in the range of 400-800°C, in particular 500-800°C, whereby the opening is, at least partially opened, and releasing at least part of the contents of the container into the chimney.

[0046] The terms "mainly" and "substantial" herein, will be understood by the expert in the field. The terms "mainly" and "substantial" can also comprise embodiments with "whole", "fully", "all", etc. Therefore, in embodiments, the terms "mainly" and "substantial" can also be removed. In so far as the terms "mainly" and "substantial" are also applicable, these can also mean up to 90% or higher, such as 95% or higher, especially 99% or more, even more in particular 99.5% or more, including 100%. The term "comprises" also includes embodiments in which the term means "comprises" "contains" or "exists". In addition, the terms first, second, third and the like that are used in the description and the claims are used for the distinction between elements that may be similar, and are not necessary for describing a sequential or chronological order. It should be understood that the terms used are interchangeable under appropriate conditions, and the embodiments of the invention described herein may work in other sequences other than those illustrated or described herein. The devices in this document are described, among others, during use. In order to be clear for the expert in the field, the invention is not limited to methods or devices in operation/in use. It must be noted that the embodiments described herein illustrate the invention more than limit it, and that the experts in the field can design (many) alternative embodiments without going outside the scope of the attached claims. References in brackets that are found in the claims must not be interpreted as a limitation of the claims. The invention further concerns a device or apparatus that describes one or more of the distinctive measures described in the description and/or displayed in the attached drawings. The invention further covers a method or a process that describes one or more of the distinctive characteristics described in the description and/or displayed in the attached drawings. The invention can be implemented using hardware that is comprising several individual elements, and by means of a suitably programmed computer. In the device claim, several resources can be listed, wherein several of these resources may have been implemented with the same hardware.

[0047] The use of the verb "comprise" and conjugations thereof does not exclude the presence of elements or steps other than those listed in a claim. The definite article "a" prior to an element does not ignore the presence of a multitude of such elements.

[0048] The mere fact that certain measures are described in different follow-up claims, does not indicate that a combination of these measures are not applied with advantage. It is clear that the various aspects mentioned in this patent application can be combined and every individual can be considered separately for a divisional patent application.

Brief description of the Figures

[0049] Embodiments of the invention will now be described by way of example, with reference to the accompanying schematic drawings wherein corresponding reference numbers make reference to corresponding parts, and in which Figures 1a-1c schematically show an embodiment of the extinguishing device arranged in a chimney; Figure 2 schematically shows an extinguishing device according to the invention; Figures 3a-3c schematically show an embodiment of the extinguishing device arranged in a chimney; Figures 4-6 schematically show a number of aspects of the extinguishing device; Figures 7-9 schematically show a number of aspects of the sweeping element. The figures are not necessarily to scale. The figures are described in more detail below.

[0050] Corresponding parts are designated by the same reference numbers in the figures.

Description of embodiments

[0051] In Figures 1a-1c, an embodiment of the extinguishing device 1 is schematically shown arranged in a chimney 100 (for example, via the method for providing an extinguishing device in a chimney according to the invention) shown from different points of view: Fig. 1a is a cross-sectional drawing, Fig. 1b is a top view and Fig. 1c is a three-dimensional drawing. The chimney shown in Figures 1a-1c (and also Figures 3a-3c) is a round chimney. As can be clearly seen, the extinguishing device according to the invention can also be arranged in chimneys with a non-circular cross-section (such as a square, rectangular, or even less regular diameter). The extinguishing device 1 comprises a container 10 with a container volume 11, wherein the container 10 comprises a first side 13 with an opening 12 with a temperature-dependent sealing element 20. The temperature-dependent sealing element 20 is configured to open the opening 12, at least partly, in the event of a chimney fire, in particular as a result of the sealing element 20 being exposed to a temperature equal to or higher than a selected change temperature. For this, the sealing element 20 comprises a material 25 that weakens in the event of being exposed to this pre-defined temperature, which in particular has been selected in the range 400-1000°C. For this, the material 25 may be selected to ensure weakening occurs due to disintegration as a result of the material 25 reaching an elevated temperature. The material 25 can also melt or distort at an elevated temperature (that can be expected in the event of a chimney fire), causing the weakening to occur and the temperature-dependent sealing element 20 to no longer fully block the opening 12. In embodiments, the temperature-dependent sealing element 20 comprises one or more materials 25, selected from the group consisting of aluminium, zinc, lead, bismuth, a polyimide (such as kapton), a polyether ether ketone (PEEK), and a polyamide-imide.

[0052] The container volume 11 comprises at least a first extinguishing medium 30 with a first volume 31 and a sweeping element 60. The embodiment schematically shown in Fig. 1a also comprises a second extinguishing medium 40 with a second volume 41. In particular, the first extinguishing medium 30, and any further extinguishing mediums 40 comprise environmentally-friendly, non-toxic materials. Both the first and the second extinguishing medium 30, 40 comprise a dry, heat-resistant particulate material that, when released from the extinguishing device 1 (in the event of a chimney fire), has an abrasive and sweeping operation on the inner wall 125 of the flue 110 and thus removes creosote from the wall 125. In particular, the dry, heat-resistant particulate material comprises dry sand. The first extinguishing medium 30 also comprises in embodiments a liquid with an evaporation temperature (at 1 bar pressure) lower than 300°C, in particular water. In embodiments, the extinguishing mediums 30, 40, comprise such a quantity of water that the container 10 comprises 1-100 g water per litre of container volume 11. As a result of this water evaporating during a chimney fire, the pressure in the container 10 will increase, weakening the temperature-dependent sealing element 20 at that moment with the result being that, in the most part, it is pressed from the opening 12, making the opening 12 as large as possible in the event of a chimney fire and avoiding only a limited part of the opening 12 becoming open in the event of a chimney fire.

[0053] If the extinguishing device 1, in addition to a first extinguishing medium 30, also comprises a second extinguishing medium 40, in particular only the first extinguishing medium 10 comprises water to support the pressure build-up in the container. The second extinguishing medium 40 comprises in particular dry sand for the supply of the extinguishing (sweeping) operation. In embodiments, the second volume 41 is therefore larger than the first volume 31, in particular at least 5 times greater. Mostly, the second extinguishing medium 40 is arranged further away from the temperature-dependent sealing element 20 than the first extinguishing medium 30. In embodiments, a second water transport barrier 115 is also configured in the container 1 for the prevention of the transport of water from the first extinguishing medium 30 to the second extinguishing medium 40. In Figure 1a, the second water transport barrier 115 is displayed schematically, comprising a comprehensive plastic casing 16 attached to the second extinguishing medium 40. In other embodiments, this plastic casing 16 can, for example, be attached to first extinguishing medium 30 or the second water transport barrier 115 in a different manner.

[0054] In an advantageous embodiment, the container 10 comprises 1-100 g per litre water container volume 11, in particular to provide overpressure in the container to support the opening of the opening 12 in the event of a chimney fire. In addition, the extinguishing device 1 comprises a first water transport barrier 15, in this case between the second extinguishing medium 40 and the sweeping element 60. This first water transport barrier 15 is applied in order to prevent the transport of water (from the first extinguishing medium 30) to the sweeping element 60 (to prevent possible corrosion of the sweeping element, among others) and thus to guarantee the operation of the sweeping element.

[0055] The extinguishing device 1 schematically displayed in Figures 1a-1c is in particular also herein referred to as a "first extinguishing device" 1 and comprises also a means of positioning 70 in order to arrange the container 10 in the chimney 100. To do this, the means of positioning 70 is in particular configured at one side of the container 10 remote from the first side 13. Using the means of positioning 70, the container 10 can be hung in the chimney 100 wherein the smoke can still exit through the chimney via the chimney outlet 150. For example, the means of positioning 70 may comprise one or more protruding elements 71. In an embodiment, the means of positioning 70 comprises a means of positioning 70 with three supports as schematically displayed in Figures 1a-1c and Fig. 2. The means of positioning 70 is configured in such a way that it can arrange the extinguishing device 1 in a chimney 100, and in embodiments can comprise for example, clamps or other fasteners such as bolts and nuts. In still other embodiments, the means of positioning 70 comprises a plate having one or more smoke openings 72 to allow the smoke to go through, such as, for example, is schematically shown in the embodiment in Fig. 4. In other embodiments, the plate comprises a grating.

[0056] Figure 2 schematically shows a further embodiment of an extinguishing device 1 according to the invention, this time equipped with an inspection element 19. Using one or more of these inspection elements 19, an inspection may be carried out on (the contents of) the container volume 11. The inspection element 19 can, for example, comprise a transparent material, such as a sight glass, such that the container volume 11, in particular the sweeping element 60 or an extinguishing medium 30, 40 can be inspected visually. In another embodiment, the inspection element 19 comprises an indicator of the maximum temperature to which the container 10 has been exposed. In yet further embodiments, the inspection element 19 comprises a material, for example, silica gel, that can be inspected to check whether the inspection element 19 has been in contact with moisture.

[0057] Figures 3a-3c show a chimney 100 with an extinguishing device 1 according to the invention. In the Figures, a chimney 100 comprising three extinguishing devices 1 is shown. This is one of the embodiments of the chimney 100 according to the invention. In other embodiments, the chimney 100 comprises one extinguishing device 1. In yet other embodiments there are two or four extinguishing devices. At the same time, the Figures 3a-3c show an embodiment of the extinguishing device 1 according to the invention. This embodiment of the extinguishing device 1 will in particular also be known as "second extinguishing device", and comprises a container 10 comprising two parts 17, 18 at an angle to one another. In particular, a first longitudinal axis L1 of the first container part 17 does not run parallel to a second longitudinal axis L2 of the second container part 18. In particular, the container 10 comprises a first container part 17 comprising the first side 13 and a second container part 18. This embodiment is in particular configured in such a way that the second container part 18 can be arranged outside a chimney 100 while the first container part 17 is arranged partially in the chimney 100, wherein the first side 13 with the opening 12 is arranged fully in the chimney 100. Hereby, a part of the first container part 17 sticks through the wall 120 of the chimney. For firmly attaching the container 10 (the second container part 18), the extinguishing device can comprises a fastener 75 in embodiments, see Fig. 3b.

[0058] The angle α, which is formed between the first longitudinal axis L1 of the first container part 17 and the second longitudinal axis L2 of the second container part 18 is in particular an obtuse angle so that displacement of the extinguishing mediums 30, 40 and the sweeping element 60 in the event of a chimney fire (if the temperature-dependent sealing element 20 is at least partially removed) through the container 10 and 12 and through the opening is hindered as little as possible. In particular, this angle is 120-150°. The embodiment shown is further configured such that for optimal use, the second longitudinal axis L2 of the second container part 18 is arranged parallel to a longitudinal axis Ls of the chimney 100.

[0059] The embodiment in Figures 3a-3c also comprises a pressure unit 80, in this case in the form of a carbon dioxide cartridge 81. A pressure unit 80 can be used additionally or as an alternative for a limited amount of water in the container 10 for the creation of an overpressure in the container, which supports the opening of the opening 12 in the event of a chimney fire. As can be seen in Figures 3a-3c, a number of (in this case identical) extinguishing devices 1 are arranged in a chimney 1.

[0060] In Fig. 4 a few embodiments for a means of positioning 70 with different shapes of smoke openings 72 is schematically illustrated at the same time. Embodiments of the means of positioning 70 are in particular configured in such a way that smoke is not restrained and is allowed to pass freely (by smoke openings 72).

[0061] In Figure 5, the sweeping element 60 in the extinguishing device 1 is shown. In Fig. 6, an embodiment of the sweeping element is shown in more detail. The embodiment of the sweeping element 60 comprises a spring element 61 and a weight 62, wherein the sweeping element is able to move downward under the force of gravity in the event of a chimney fire. The sweeping element 60 comprises in the container 10 a first configuration with a first cross-section d1, so that it can be enclosed by the container 10. The sweeping element 60 comprises extremities 63, of which the longest distance d3 with respect to a body axis Lv of the sweeping element 60 is determined by the diameter d1 of the container 10. If the sweeping element 10 comes outside the container (in the event of a chimney fire), the sweeping element 60 obtains a second configuration with a second cross-section d2 larger than the first cross-section d1, see Fig. 6. In this case, the longest distance d3 from the extremities 63 are in particular determined by the length of the bristles 65. In particular, this behaviour can be obtained with a sweeping element 60 comprising a spring element 61 that can extend outwards, wherein the extremities 63 of the spring element 61 can touch and sweep an inner wall 125 (not shown, but see example in Fig. 1a and Figures 7, 8) of a chimney 100, thereby removing (sweeping) creosote from the wall 125.

[0062] In the embodiment shown Fig. 5 and Fig. 6, the spring element 61 has a plurality of resilient bristles 65, wherein these bristles 65 extend outwards in the second configuration of the sweeping element 60, in the meantime, they are rolled up or folded in the first configuration, wherein the longest distance d3 with respect to the body axis Lv in the first configuration is shorter than in the second configuration (external of the extinguishing device 1) (compare Fig. 6 with Fig. 5). The bristles 65 are in particular made from heat-resistant material, so they can perform their sweeping operation at the temperature which prevails during a chimney fire. In an embodiment, these resilient bristles 65 comprise, for example, metal bristles, in particular selected with a diameter selected from 0.1-5 mm, in particular 0.1 to 3 mm, such as 0.5-3 mm.

[0063] The upper figure of Figure 7 provides a view of the sweeping element 60 in an extinguishing device 1 in a chimney 100 and the lower figure shows, by way of example, the sweeping element 60 when it has left the extinguishing device 1, such as, for example, in the event of a chimney fire. As the Figure shows schematically, the bristles 65 can, under normal circumstances, with the sweeping element 60 in the extinguishing device 1, be partly rolled up, wherein the extremities 63 touch the wall of the container and the longest distance d3 between the body axis Lv of the sweeping element 60 and the extremities 63 is shorter than the longest distance d3 between the body axis Lv of the sweeping element 60 and the extremities 63, in this case the sweeping element 60 has left the extinguishing device 1 (see lower Figure). The rolled up bristles 63 can also cause additional friction at the moment that the sweeping element is intended to leave the extinguishing device 1 (in the event of a chimney fire). In order to allow displacement of the sweeping element 60 from the extinguishing device 1, the sweeping element 60 is equipped in this case with a weight 62.

[0064] Figures 8a and 8b show schematically the sweeping element 60 respectively in a circular chimney 100 and a square chimney 100. In the chimney 100 with a circular cross-section, the bristles 65 may extend in any direction if the extremities 63 hit the wall 125. In this case, longest distance d3 between the body axis Lv of the sweeping element 60 and the extremities 63 are the same for all bristles (and this is also independent of the length of the bristles 65). If the chimney 100 is not circular but, for example, is a square cross-section, then the sweeping element 60 can still sweep the chimney wall 125 due to the resilient bristles 65 and the longest distance d3 varies between the body axis Lv the sweeping element 60 and the extremities 63 between the bristles 65. In particular, it may be advantageous in this case if the sweeping element 65 comprises bristles of different lengths or diameters. On the other hand, it may also be advantageous in this case if all the bristles 65 of the sweeping element 60 have the same length. Figures 9a and 9b schematically show some embodiments of the spring element 61. In these Figures, the bristles 65 comprise loops 66, wherein the bristles 65 have in particular a loop-like shape or that of a flower. The bristles 65,66 can have a more circular shape, see Fig. 9b. Due to the resilience of the spring, the bristles can, depending on the chimney (diameter), be more or less circular/oval. The bristles 65, 66 of the embodiment shown in Fig. 9a can, for example, be applied in a flue 110 with a relatively small opening and assume the shape of the bristles 65, 66 of the embodiment, shown in Figure 9b. In a flue 110 with a larger opening, the bristles 65, 66 again assume the form as shown in Figure 9a. In other cases, the bristles 65, 66 (again) assume intermediate shapes, so that the extremities 63 are capable of providing a good sweeping action, in particular a scraping action. The bristles may have a thickness of about 0.1-5 mm, such as 0.1-4 mm, in particular 0.5-3 mm.

[0065] As shown in the Figures 5, 6, 8a, 8b, 9a and 9b, the spring element can have a central body, to which the bristles are attached. The bristles can spring out relative to the central body. The bristles can be connected at one end to the central body, or with two ends connected to the central body. In the latter case, the bristles can form loops. In embodiments, the bristles can also be interconnected, for example, a bristle protruding from both sides of the central body as two (protruding) bristles, or a bristle configured in two or more loops, wherein the loops come together at the central body.

[0066] It must be clear that the above description is only included to illustrate the operation of preferred embodiments of the invention, and not to limit the scope of the invention. Using the explanation above, many variations that fall within the spirit and scope of the present invention will be evident to an experienced expert.

Claims

1. An extinguishing device (1) with a temperature-dependent sealing element (20), the extinguishing device (1) comprising a container (10) with a container volume (11), the container (10) comprising a first side (13) with an opening (12) with the temperature-dependent sealing element (20), wherein the temperature-dependent sealing element (20) comprises a material (25) that weakens at a pre-defined change temperature, and wherein the temperature-dependent sealing element (20) is configured to at least partly open the opening (12) upon exposure to the selected change temperature or a higher temperature, wherein the change temperature is selected in the range of 400-1000°C, wherein the container volume (11) comprises a first extinguishing medium (30) with a first volume (31) and a sweeping element (60) with extremities (63) with a longest distance (d3) relative to a body axis (Lv) of the sweeping element (60), wherein the sweeping element (60) is configured such that the longest distance (d3) in a first configuration of the sweeping element (60) in the container (10) is shorter than in a second configuration of the sweeping element (60) external to the extinguishing device (1).

2. The extinguishing device (1) according to claim 1, wherein the temperature-dependent sealing element (20) comprises one or more materials (25) selected from the group consisting of aluminium, zinc, lead, bismuth, a polyimide, a polyamide-imide, and a polyether ether ketone.

3. The extinguishing device (1) according to one or more of the preceding claims, wherein the first extinguishing medium (30) comprises sand.

4. The extinguishing device (1) according to one or more of the preceding claims, wherein the container (10) comprises 1-100 g of water per litre container volume (11).

5. The extinguishing device according to one or more of the preceding claims, wherein the first extinguishing medium (30) comprises a mixture of sand and water, the extinguishing device (1) further comprising a first water transport barrier (15), wherein the first water transport barrier (15) is configured to prevent transport of water from the first extinguishing medium (30) to the sweeping element (60), the extinguishing device (1) further comprising a second extinguishing medium (40) with a second volume (41), and a second water transport barrier (115), wherein the second extinguishing medium (40) comprises substantially dry sand, and wherein the second extinguishing medium (40) is further remote from the temperature-dependent sealing element (20) than from the first extinguishing medium (30), and wherein the second water transport barrier (115) is configured to prevent a transport of water from the first extinguishing medium (30) to the second extinguishing medium (40), and wherein the second water transport barrier (115) comprises a plastic casing (16), wherein at least one of the extinguishing mediums (30, 40) is surrounded by the plastic casing (16).

6. The extinguishing device according to claim 5, wherein the second volume (41) is greater than the first volume (31), and wherein the first extinguishing medium comprises at least 10 weight % water and up to 50 weight % water, and wherein the second water transport barrier (115) comprises a plastic casing (16), wherein at least one of the extinguishing mediums (30, 40) is surrounded by the plastic casing (16).

7. The extinguishing device according to one or more of the preceding claims, wherein the sweeping element (60) comprises a spring element (61) and a weight (62), wherein in the second configuration of the sweeping element (60) the spring element (61) extends outwards, and wherein the weight (62) is configured to enable a displacement of the sweeping element (60) in the container (10) and in an intended chimney (100) under the influence of gravity, wherein the spring element (61) comprises a plurality of resilient bristles (65) that in the second configuration of the sweeping element (60) extend outwards, and wherein the resilient bristles (65) comprise metal bristles with a diameter selected in the range of 0.1-3 mm.

8. The extinguishing device according to one or more of the preceding claims, wherein the container volume (11) is selected in the range of 5-50 litres.

9. The extinguishing device according to one or more of the preceding claims, wherein the container (10) further comprises an inspection element (19), configured for inspection of the container volume (11), and/or wherein the extinguishing device (1) further comprises a pressure unit (80), configured to be able to provide the container volume (11) at a pressure of at least 10 bar, wherein the pressure unit (80) comprises a carbon dioxide cartridge (81).

10. The extinguishing device according to one or more of the preceding claims, wherein the extinguishing device further comprises a means of positioning (70) arranged at a side of the container (10) remote from the first side (13) and configured to arrange the container (10) in a chimney (100), wherein the extinguishing device (1) is configured to hang the container (10) in the chimney (100), and the means of positioning (70) is configured to be attached to a chimney outlet (150) without complete closure of the chimney (100), and wherein the means of positioning (70) comprises one or more elements selected from the group consisting of (i) one or more relative to the container (10) protruding elements (71) and (ii) a plate with one or more smoke openings (72).

11. The extinguishing device according to one or more of the preceding claims, wherein the container (10) comprises a first container part (17) comprising the first side (13) and a second container part (18), wherein the extinguishing device (1) is configured to arrange the second container part (18) outside a chimney (100) and the first container part (17) partially within the chimney (100), wherein a first longitudinal axis (L1) of the first container part (17) is not parallel to a second longitudinal axis (L2) of the second container part (18) and wherein the container (10) is configured to arrange a part of the first container part (17) through a wall (120) of the chimney, and wherein an angle (α) between the first longitudinal axis (L1) of the first container part (17) and the second longitudinal axis (L2) of the second container part (18) is selected in the range of 120-150°, and wherein the container (10) is configured to arrange the second longitudinal axis (L2) of the second container part (18) parallel to a chimney longitudinal axis (Ls) of the chimney (100).

12. A method for providing an extinguishing device (1) in a chimney (100) comprising providing an extinguishing device (1) according to one of the preceding claims, and at least partly arranging the fire extinguishing device (1) in the chimney (100).

13. The method according to claim 12, wherein the container (10) comprises a first container part (17), comprising the first side (13), and a second container part (18), wherein the container volume (11) is selected in the range of 5-50 litres, and wherein arranging the extinguishing device in the chimney comprises, at least partly arranging the extinguishing device (1) in the chimney (100), wherein a part of the first container part (17) comprising the first side (13) is arranged in a flue (110) and the second container part (18) is arranged at an outside (130) of the chimney (100).

14. A method for making a chimney (100) according to claim 13, wherein at least one extinguishing device (1) according to claim 11 is provided in the chimney (100) during constructing the chimney (100), and a part of the first container part (17) comprising the first side (13) is arranged in the flue (110) and the second container part (18) is arranged at the outside (130) of the chimney (100), wherein a second longitudinal axis (L2) of the second container part (18) is arranged parallel to a chimney longitudinal axis (Ls) of the chimney (100).

15. A method for extinguishing a chimney fire in a chimney (100) comprising an extinguishing device (1) according to one or more of the preceding claims 1-11, or obtainable according to the method according to one or more of the preceding claims 12-14, comprising exposing the sealing element (20) to a change temperature selected in the range of 400-1000°C whereby the opening (12) is at least partially opened, and releasing at least a part of the contents of the container into the chimney (100).

Drawing