Fire prevention and extinguishing device

Abstract

 It consists of a vessel (1) containing the extinguishing product and a explosive charge (5) in direct communication with a wick (7) that emerges to the outside of the vessel and that surrounds it inserted in a series of peripheral lugs (3) of the vessel itself (1.)
Each one of these lugs (3) has a pair of holes (4) through which the wick (7) passes, as well as an incombustible material string (8) with a larger section than that of the wick (7.) Said string (8) defines the suspension means of the device for the fire barrier laying, also acting as a protection means of the wick (7) in the event of knocks.
The wick (7) that remains clamped in each lug (3), causes warning detonations of the impending explosion of the charge (5), upon the wick (7) burning.

Description

[0001] As is expressed in the title of this specification, the present invention refers to a fire extinguishing and prevention device and provides a series of relevant features with regard to the devices presently used for a similar purpose.

[0002] The device acts automatically in contact with fire, causing the explosion and disintegration of the device and the subsequent expansion of the extinguishing product, liquid or powder and in general of any fire-resistant product, or physical or chemical product to smother the fire, which is of course stored inside the device.

[0003] The fire extinguishing product is not advantageously pressurized inside the device, which defines a safety feature of the state of the charge of the extinguisher. Therefore, periodic checks are not necessary. In certain circumstances the vessel could have pressure. The impelling force that causes the ejection of the extinguishing product is caused in the combustion of an explosive charge, located inside the vessel and that is isolated from the extinguishing product.

[0004] The explosion can be brought about by a temperature increase, smoke detecting device, contact or proximity to a flame, or else by any other known detection means by means of the corresponding detecting elements.

BACKGROUND OF THE INVENTION

[0005] Fire extinguishing devices of the type called extinguishers are presently used and in them the extinguishing product is pressurized inside the vessel, in such a way that the product comes out upon manually operating the valve device that is located in the head of the vessel.

[0006] With this known device, it becomes necessary to periodically check the state of the charge of the extinguisher, in such a way that if this is not done somewhat frequently, it may happen on certain occasions and when it is necessary to use it, the pressure is lower than the required one and the device turns out to be ineffective.

[0007] The same applicants of the present invention, also have registered another device of a similar effect, specifically patent of invention number P-8703285, where the container has a complex structure and does not consider the advantageous features object of the present invention.

DESCRIPTION OF THE INVENTION

[0008] In general lines, the fire extinguishing and prevention device, that the invention proposes, includes a fire-resistant material vessel so that it is not destroyed before the explosion. It may also be of plastic with an alloy of this fire-resistant material. The explosive charge is contained in the central area of the inside of the vessel, being isolated from the extinguishing product and immobilized in its housing by any known means. The inlet of the vessel is sealed by a plug. There is also a sealing plug to prevent moisture from entering during storage time, and once this sealing plug is destroyed, even the environment wets the explosive charge making the device unserviceable.

[0009] There is a wick that surrounds the vessel and that reaches the explosive charge, this wick passing through a series of perforated lugs provided in the periphery of the vessel. A suspension element of the vessel also passes through these lugs, such as a fiber glass, asbestos string or one of any other incombustible material to form a type of handle so it may be hung from trees.

[0010] This suspension string that passes close to the wick, also defines a protective element of the latter upon having a rather larger diameter. Any impact that is made during transport and that could damage the wick, is resisted by the suspension string.

[0011] A special characteristic that is derived from the structure of the vessel containing the extinguishing product and explosive charge and that is derived precisely from the existence of said lugs is determined by the fact that the wick remains clamped upon crossing the lugs, which produces warning or prevention detonations of the immediate explosion of the charge.

[0012] Besides, the existence of a peripheral strip containing liquid or powder that causes a combustion inert environment, inhibiting a chain reaction, is provided for. Such is the case of halons or saturated halogenated hydrocarbons. Halons are very effective when extinguishing agents that do not conduct electricity are needed, or when the weight - effectiveness ratio is an important factor.

[0013] Inside the vessel and after the explosive, there may also be a signaling powder or flare that indicates the place of the explosion, either by forming a cloud of smoke, or by any other indication.

[0014] In order to make it easier to understand the features of the invention and forming an integral part of this specification, a page of drawings in whose sole figure the following has been represented with an illustrative and non-restrictive manner:

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Sole figure.- It is a plan view with a sectioned quadrant, of the fire extinguishing and prevention device object of the invention.

DESCRIPTION OF A PREFERRED EMBODIMENT

[0016] Making reference to the numbering that is indicated in the figure, we can see that the fire extinguishing and prevention device that the invention proposes, is determined by vessel (1) with a general cylindric shape and that has an inlet provided with a neck (2) in a point of its side surface.

[0017] In the side periphery there are lugs (3) each one provided with a pair of holes (4.)

[0018] The inside of the vessel is filled with the extinguishing product. Subsequently the explosive charge (5) stored in tube (6) whose mouth is threaded to the neck (2) is introduced through the inlet of the vessel (1), as is clearly seen in the sectioned portion of the figure.

[0019] The explosive charge fills the center area of the vessel so that when the explosion is started there is a better distribution of charges that uniformly cast the extinguishing product in the stipulated action radius, after destruction of the vessel (1.)

[0020] The explosive charge (5) is in direct communication with the wick (7) that emerges outside and that is located on the outer periphery of the vessel (1), passing through the holes (4) of the lugs (3.)

[0021] In order to prevent the wick (7) from deteriorating, or even splitting as a result of knocks during handling, or else during transport and storage, there is a protection means thereof, defined by the string (8) that follows the same peripheral path as the wick (7), therefore, passing through the pairs of holes (4) of the lugs (3.) This string (8) is used to suspend the device from a tree or the like, in the fire barrier laying foreseen for example as fire prevention.

[0022] The diameter of the string (8) is notably greater than that of the wick (7) and therefore any knock that could damage the wick (7) is endured by the string (8.)

[0023] As is seen in the figure, the vessel (1) is also provided with a second plug (9) acting a a moisture seal.

[0024] The wick (7) upon entering and coming out through the pair of holes (4) of each one of the lugs (3), remains "clamped" and during combustion of the same detonations are caused upon passing through these clamped areas, warning of the immediate explosion of the charge and therefore acting as a safety measure.

Claims

1. Fire extinguishing and prevention device, of the type that consists of a vessel containing the extinguishing product, the latter not normally being pressurized or sometimes in specific circumstances, and coming out upon automatically activating an impelling device contained in the vessel and that is controlled by a heat detecting element or impact device, or else upon coming in contact with the flame the wick that emerges from the vessel, being characterized in that it consists of a plastic vessel (1) with a fire-resistant alloy, inside of which there is the extinguishing product and an explosive charge (5) isolated and immobilized in the center area and in communication with a wick that has access through the inlet of the vessel, the latter defined by a neck (2) that can be plugged with a plug, it being provided that the periphery of the vessel (1) has some lugs (3) provided with two holes (4) through which the wick (7) and incombustible material string (8), that defines the suspension means of the vessel (1), pass for laying a line that acts as a fire barrier.

2. Fire extinguishing and prevention device, according to claim 1, in which the suspension string (8) has a larger diameter than the wick (7) in order to define protection means of the latter in the event of knocks.

3. Fire extinguishing and prevention device, according to claim 1, in which the wick (7) is clamped in each lug (3), upon passing through the two holes (4) of the same, thus causing warning detonations of the immediate explosion of the charge, upon the wick (7) burning.

4. Fire extinguishing and prevention device, according to claim 1, in which the inlet of the vessel, includes a second moisture sealing plug (9) and once destroyed the moisture itself of the environment makes the device unserviceable.

5. Fir extinguishing and prevention device, according to the above claims, in which the vessel (1) also includes a peripheral strip, outside or inside, containing liquid or powder that causes a combustion inert environment, inhibiting a chain reaction.

6. Fire extinguishing and prevention device, according to the above claims, in which the housing for the explosive charge (5) also includes a signaling powder or flare, which upon the device functioning, comes out to indicate the place of the explosion.

7. Fire extinguishing and prevention device, according to the above claims, in which the explosive charge (5) is located in the bottom of a slightly conic tube (6), introduced in the mouth of the vessel (1) and in radial arrangement upon being provided with a flange threaded to the neck (2) of the vessel (1.)

Drawing