Biomass solid fuel stove (1) comprising an access door (2) and a brazier formed by a bottom grate (4) and walls (3) characterized in that the bottom grate (4) is rotatable or sliding under the walls (3) and that said bottom grate (4) is connected to the access door (2) through connecting means (5,6) so that each time the access door (2) is opened, the connecting means (5,6) make the bottom grate (4) slide or turn under the walls (3).
The present invention relates to the construction of a solid fuel biomass stove, equipped with a facilitated cleaning system, to empty the brazier of ash, dust, small residues of unburned or partially burned material, at the end or at the beginning of each phase of combustion by opening and closing the access door to the burn pot of the stove.
Solid fuel biomass stoves need to be cleaned daily to have a high efficiency.
In the brazier of solid fuel biomass stoves, when the stove is turned off, ash, dust, small residues of unburned or partially burned material remain. When re-ignited, these materials slow down or even prevent the stove from restarting and in any case lower the efficiency of said stove. To ensure efficient combustion, it would be advisable to empty the brazier of ash, dust, small residues of unburned or partially burned material when switching off or restarting the stove when the stove is switched off or on again. When it is switched off, the manual emptying of the brazier is particularly difficult as it is particularly hot due to the combustion that took place in it. To be able to carry out the operation safely, the stove should be turned off in advance, allowing said stove to cool down, the time required for its cooling is about two hours and then proceed with manual emptying of the brazier. Very often the user does not know when to turn off the stove in advance and therefore when the brazier is turned back on it will be dirty with ash, dust, small residues of unburned or partially burned material. Before re-ignition, the user should remember to clean the brazier and start re-ignition, to improve the efficiency of the stove.
To overcome these drawbacks, motorized mechanisms have been studied which operate a scraper that cleans the bottom grate of the brazier of a particle solid material stove as shown in
However, the solution proposed in
The present invention aims to overcome these and other disadvantages.
The present invention aims to produce a stove that does not have the disadvantages and drawbacks shown in the state of the art.
The main purpose of the present invention is to clean the bottom grate of the brazier at the end or at the beginning of each combustion cycle, by simply opening and closing the access door of the stove's brazier.
The main purpose of the present invention is to produce a solid fuel biomass stove comprising an access door and a brazier formed by a bottom grate and walls characterized by the fact that the bottom grate slides under the walls and that the grate is connected through connection to the access door so that each time the access door is opened, the connecting means make the bottom grate slide or turn under the walls.
Another feature is given by the fact that the connection means through which the bottom grate is connected to the access door are mechanical connection means.
Another feature is given by the fact that the connection means through which the bottom grate is connected to the access door are a rod integral with the bottom grate of the brazier and a connecting rod integral with the access door and that a pin, integral with the rod of the grate at the bottom of the brazier slides into a slot in the connecting rod.
Another feature is given by the fact that the bottom grate of the brazier slides in guides under the parts of the brazier.
Another feature is given by the fact that the means of connection through which the bottom grate is connected to the access door are a system of toothed wheels which, when the access door is opened, make the bottom grate rotate.
Other characteristics and advantages of the present invention will become clear from the following description of an embodiment of the present invention given by way of non-limiting example of
An embodiment of a solid fuel biomass stove 1 according to the present invention is shown in
The connection means 5, 6 to the access door 2 of the stove 1 can preferably but not exclusively be mechanical connection means.
In a preferred embodiment, when the access door 2 is opened, the bottom grate 4 of the brazier is pulled by the connecting means 5, 6 to the access door 2 and, sliding under one of the walls 3 of the brazier, is cleaned by dust, ash and unburned or partially burned material, which on meeting the wall 3 of the brazier is forced to fall into the ash collection tray 10.
To improve the sliding of the bottom grate 4 of the brazier it can slide, preferably but not exclusively, in guides 7 placed under two opposite walls 4 of the brazier.
The connection means 5, 6 to the access door 2 are formed, preferably but not exclusively, by a rod 5 integral with the bottom grate 4 of the brazier and by a connecting rod 6 integral with the access door 2.
The connecting rod 6 has a slot 8 within which the pin 9 integral with the rod 5 of the bottom grate 4 of the brazier can slide.
When the door is opened, the connecting rod 6 pulls the bottom grate 4 of the brazier outwards through the rod 5, the bottom grate 4 of the brazier slides into the guides 7, and being forced to pass under the walls 3 of the brazier it is cleaned of dust, ash and unburned or partially burned material which, on meeting the walls 3 of the brazier, are forced to fall into the ash pan 10.
Closing the access door 2 of the solid fuel biomass stove through the connecting means 5, 6 to the access door 2 repositions the bottom grate 4 under the walls 3, recomposing the brazier with bottom grate 4 and walls 3 act to receive the fuel for its combustion ..
By simply opening and closing the access door 2, the bottom grate 4 of the brazier of the solid fuel biomass stove 1 is cleaned.
In another embodiment of the invention, when the access door 2 is opened, the bottom grate 4 of the brazier is made to rotate by the connection means 5, 6 to the access door 2 and, by turning on itself, it is cleaned from dust, ash and unburned or partially burned material, which in this way is forced to fall into the ash collection tray 10.
The invention, well understood, is not limited to the representation given by the tables but can receive improvements and modifications by the man of the trade without leaving the framework of the patent.
The present invention allows numerous advantages and to overcome difficulties that could not be overcome with the systems currently on the market.
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.