CA2495854A1 - Fire extinguishing training exercise system - Google Patents

Abstract

The invention relates to a fire extinguishing training exercise system. The inventive system comprises a furnace consisting of a gas burner which is submerged in water in a tank, means of conveying a combustible gas mixture, such as propane and air, to said burner and an electrode (62) which can ignite the gas at the beginning of a drill. Moreover, the system is also provided with an ignition system comprising a casing (7) which is positioned close to the aforementioned tank, the inner space thereof being thermally protected, and which is equipped with a heat-resistant tube (71) made, for example, from stainless steel, the free end of said tube being disposed at a short distance above the surface of the water in the tank. The above-mentioned casing contains: a device (70) which is used to supply a combustible gas mixture, such as propane and air, to the tube (71); and a spark igniter (6) which is equipped with the aforementioned electrode (62), the latter extending partially into the tube (71) in an axial manner. The invention can be used as a fire fighting training system.

Description

EXERCISE FACILITY FOR TRAINING
PEOPLE EXTINGUISHING A FIRE
The present invention relates to an exercise installation for training people to put out a fire.
Devices of this kind are known, which include means able to generate a real fire by igniting a fuel - for example a gas produced by a burner -; during training, the trainee must try extinguish the fire as quickly and efficiently as possible, using an appropriate fire extinguisher.
The operation is of course monitored and controlled by personnel coaching and teaching.
The documents US-4 303 396 and EP-0 146 465, for example, are relate to respectively fixed and mobile drive systems (climb inside a truck).
More specifically, the installation which is the subject of the invention is intended for the training of persons to extinguish a fire which simulates a fire of hydrocarbons, this installation comprising:
- a hearth constituted by a gas burner which is immersed in the water contained in a tank;
- Means for bringing a mixture of gases to the burner fuel, such as propane, and air;
-an electrode capable of igniting the gas at the start of the exercise.
It is a double electrode of known type, operating at high voltage, the discharge spark between the two electrodes causing inflammation mixture of combustible gas and air exiting the burner surface.
The state of the art in this area can be illustrated by the document FR - 2 S 14 X45.
To be able to cause the mixture to ignite, it makes sense to arrange such an installation in such a way that the active part of the electrode, where the spark occurs, is positioned a short distance from an area of the burner where exits the fuel gas mixture.
This poses several difficulties.
First, once the inflammation has been achieved, the electrode is exposed to flames, which poses a risk of fouling and of deterioration resulting from the high temperature.

2 Second, the electrode is also exposed to the agent used during the exercise, for example water or powder.
This exposure may compromise the proper functioning of the electrode, for lighting a new fire when a trainee has finished his exercise.
This is particularly the case if the electrode is wet or if powder is deposited in the interval between the anode and the cathode.
However, it is important, for a good progress of the exercises, that can quickly and automatically start a new fire using a ad-hoc control circuit, as soon as an exercise is finished.
These disadvantages are avoided in (installation which is (subject of the document FR - 2 814 845 cited above, thanks to the fact that the electrode is mobile and East likely to be removed from the burner before exercise begins, and maintained retracted during exercise.
Its movement is controlled by a pneumatic cylinder.
It is thus sheltered from flames and the extinguishing agent used during exercise.
As soon as the exercise is over, she is moved again to her active position, suitable for re-ignition.
This known installation, in general, gives satisfaction.
However, it requires the use of mobile components, more expensive and less robust than equivalent fixed parts, requiring a sustained maintenance.
In addition, the pneumatic cylinder has a relatively long important, and its presence on one side of the tank can pose difficulties in some configurations, especially when you want to attach the tank to a partition of the exercise room or place the tank in a corner of this room.
The invention aims to solve these difficulties.
This objective is achieved, in accordance with (invention), thanks to the fact that (installation is provided with an ignition system comprising a box positioned near the tank, of which (interior space is thermally protected, and who is fitted with a heat-resistant tube, for example made of stainless steel, of which (free end opens a short distance above the water surface contained in the tank, while inside this box are arranged, Firstly, a device for blowing a mixture of combustible gas into this tube, such as that of

3 propane and air, and on the other hand, a candle provided with said electrode, this latest extending axially to (inside the tube, over only part of its length.
This system is therefore fixed.
The size of the housing is small compared to that of the tank.
This thermally insulated housing and the tube protect all active components of the ignition system, and in particular (electrode.
The spark necessary for ignition is not created in the vicinity of the burner, but inside the tube, in order to ignite the combustible mixture which the travels.
So these are flames that leave the tube, like a torch, pure cause (ignition of the burner.
As soon as the tank has been ignited, the gas supply to the system fuel and possibly air is obviously stopped.
The tube remains in place above the tank, its presence does not interfere (exercise, and the electrode being at (shelter at (inside the tube.
The latter then plays the role of a protective sheath, preventing the electrode is exposed to flames, which would pose risks fouling and deterioration resulting from the high temperature.
The electrode is also protected from the extinguishing agent work during the exercise.
By the way, according to a number of characteristics advantageous, but not limiting of the invention:
- the device for blowing the gas mixture into the tube fuel and air is a hollow body with inlet mouths for the combustible and air gas;
- the installation includes a means of controlling the presence of flame inside the tube, such as an ultraviolet radiation detector, this control means being located at (inside said housing, at (inlet of this tube ;
- the tube has the shape of a cane, its free end portion being curved and turned downward, to open just above the area water contained in the tank;
- the burner is powered by the mixture of combustible gas and air via a “swan neck” pipe;
- the installation includes means for controlling the extinction of flames in the tank, such as ultraviolet radiation probes ;

WO 2004/02004

4 PCT / FR2003 / 002496 - (installation includes means for controlling extinction of flames present in the tank, such as at least one temperature sensor, through example consisting of a thermocouple type probe placed nearby immediate of the hearth and relayed by an "intelligent" sensor capable of detecting and save real-time temperature readings near the fireplace;
- (installation includes a control circuit capable of cutting automatically supply the burner with combustible gas if the extinction of the flames in the tank were not detected for more than a period of time determined from ignition;
- the combustible gas is supplied from a pressure tank and the air by means of a booster, the mixing being done by a connection in "
T ", in which the air supply duct penetrates, perpendicularly, to inside the fuel gas supply pipe;
- (air is supplied to said device by means of a supply duct which is connected to (air inlet mouth and is supplied with air by said booster;
- the combustible gas is brought to said device by means of a conduit which is connected to (fuel gas inlet mouth, and is supplied with combustible gas from the pressure tank;
- the box is equipped with a gas flow adjustment device fuel admitted into the device used to inject into the tube the mix of combustible gas and air;
- (air is supplied to this device by means of at least one outlet air inlet with adjustable flow rate mounted in the wall of the housing;
- this housing is internally lined with a layer of material thermally insulating;
- the burner is made of intertwined stainless steel fibers.
Other characteristics and advantages of the invention will appear of the description which will now be made of it, with reference to the drawings appended which represent - without limitation - a possible mode of execution.
On these drawings;
- Figure 1 is a general schematic view of the assembly of installation;
- Figure 2 is a schematic general view, in axial section, and larger scale, of the ignition system which is provided (installation;

- Figure 3 is a detail of the "T" connection of the conduits gas and air supply;
- Figure 4 is a schematic view of the hearth, intended to illustrate the operation of the installation;

5 - Figure 5 is a diagram of the command and control circuit of the installation.
In Figure 1, the reference numeral 1 designates a gas cylinder fuel, in this case propane; as an indication, the pressure of the gas in the bottle is between 7 and 17 bars approximately.
Reference 2 designates a known type of booster, capable of supplying an air flow whose pressure is slightly higher than the pressure atmospheric.
Reference 3 designates a connection which - as we will see more late - connects the propane and air lines so that feed in mixture of combustible gas an exercise stove.
The latter consists of a burner 5 which is immersed in water E
contained in a tank, or tank, 4 arranged horizontally on a support, by example placed on the ground. The submerged burner 5 is a porous horizontal plate, through example made of knitted stainless steel fibers, the face of which upper east of the “mufti-flame” type, allowing spreading of the combustion over all the upper side of the burner.
The shape of the container 4 can be any, for example circular, square or rectangular (seen from above). It is relatively shallow through relative to its dimensions in a horizontal plane.
Reference 6 designates a candle with a double electrode located on a side of tank 4, inside (inside a box 7.
This case has for example a rectangular parallelepiped shape or cubic.
As an indication, the dimension of each of its sides is (order of 300 mm.
Its wall is heat resistant, for example made of stainless steel.
Its dimensions are relatively reduced compared to those of the tank 4, its scale having been proportionally enlarged in FIG. 1 to simply to improve the clarity of the drawing.
Referring to Figure 2, we observe that the interior space of the housing 7 is thermally protected by a gasket 700 of material of the type

6 known having good thermal insulation qualities, for example a layer with base of mineral fibers.
The housing 7 is provided with a heat-resistant tube 71, for example Stainless steel; it extends horizontally, passes over the wall of the tank 4, and its free end portion 710, slightly curved downwards, opens at a short distance above the surface of the water E contained in the tank 4.
This portion 710 is oriented approximately towards the region submerged burner control unit 5.
As an indication, the tube 71 has a length of between 300 and 600 mm approximately, has a diameter of the order of 50 to 60 mm, and it extends above from the skin surface at a distance therefrom which is between 50 and 200 mm about.
The tube 71 is tightly fixed, by suitable means not shown, inside a corresponding section opening formed in fade from the walls of the housing 7.
A (inside the latter is arranged a device 70 capable of inject into the tube 71 a mixture of combustible gas, such as propane and air, as well as an electric candle fitted with the electrode 6.
This device 70 is a hollow body having a main part 72 of cylindrical tubular shape, which is extended axially by a pipe 78 of smaller diameter, significantly smaller than that of tube 71, at (inside of this latest.
The free end portion 780 of the pipe 78 is widened.
The axis common to parts 72 and 78 is horizontal, parallel by therefore to the axis of the tube 71.
The hose 78 extends to (inside the tube 71 only over part of its length, for example over a third of its length.
In the end portion of part 72 which is located at (interior from the housing 7, on the side opposite the pipe 78, a spark plug 6 is mounted.
This is provided with a rigid, filiform and straight double electrode 62, which extends axially to (inside the tubular elements 72 and 78. Its free end is positioned in the open part 780 of the pipe 78.
Appropriate fixing and retaining means, not shown, ensure, on the one hand, the maintenance of the device 70 at (inside the housing 7 in the

7 desired position and, on the other hand, the correct centering of (electrode 62 in the items tubular 72 and 78.
The references 60 and 61 respectively designate a generator of high-voltage current and an electrical conductor supplying the spark plug 6, via a contactor 610 such as a switch controlled by an electromagnet.
Device 70 has gas inlet mouths fuel and for air.
They are tubing 730, respectively 720, connected on the main part 72.
Air manifold 720 is located upstream of the gas manifold combustible, considering the direction of insufflation of the mixture in the tube 71, via pipe 78. The axis of this tubing is perpendicular to the part tax primary 72.
The axis of the fuel gas pipe 730 forms an acute angle a with the axis of the main part 72, with an angle at the top directed towards (downstream Towards (upstream, the tubing 730 is extended by means of a conduit 73 up to a connection end piece 170 carried by a wall of the housing 7. On this conduit 73 is fitted with a suitable gas flow regulation system, materialized in the figure by a chamber 74 containing a movable adjustment flap, by example cam controlled.
The conduit 73 is intended to be connected, via a connector 170, to a conduit 17 for supplying combustible gas.
As for conduit 76, it is intended either to be connected to a conduit 22 of air supply -as shown in Figures 1 and 2-, either left free so that it then communicates with the air present in (enclosure of the housing 7.
Towards (upstream, the tubing 720 is extended by means of a conduit 76 of short length, of which (inlet is located inside the housing 70.
References 8a and 8b (Figures 1 and 4) designate temperature probes.
ultraviolet radiation, each intended to detect an area of the hearth.
More than two probes can of course be used, depending dimensions of tray 4, and the difficulty that we want to give to exercise.
These are known type W probes, using insensitive tubes to the radiation of sunlight and electric lighting, but likely detect ultraviolet rays from the flame.

8 In the event of disappearance of this radiation, resulting from an extinction local flame, in the detected area, the probe emits an electrical signal which is received by a circuit 80.
A (inside the housing 7 is mounted a radiation probe similar ultraviolet 8c, intended to detect the presence of a flame at (inside of tube 71.
References 90 and 91 respectively denote a propane and a carbon dioxide (CO) detector.
Electrical signals corresponding to each of these detections are sent to an appropriate processing circuit 9.
Reference 93 designates a temperature sensor arranged at proximity to the home which, as we will see below, has the function of stopping the combustion when the temperature exceeds a determined threshold.
The reference 92 designates a fan capable of causing the ventilation of the room L containing the burner, and in which the exercise is practiced.
The reference 8d designates a temperature sensor constituted by a thermocouple, able to detect a negative temperature gradient nearby immediate home.
It is for example a thermocouple of the type marketed by the French company "PYRO-SYSTEMES" under the commercial reference "TCS-30 Klizc-P ", of length equal to 100 mm, of diameter equal to 3 mm, and the maximum operating temperature is 1100 ° C.
This sensor 8d is integrated in the upper face of the burner 5.
At least one pair of housings is provided in the fades openings 77, 77 'capable of being more or less completely closed through adjustment flaps 76, respectively 76 ′, or on the contrary left open.
These are air intake vents in the housing.
They allow (air supply, with adjustable flow, from (outside, up to the entrance of tube 76 when the conduit 22 has not been plugged on this tube 76.
In FIG. 1, the lines 15 and 16 have been designated propane supply, respectively at medium and low pressure.
The direction of propane circulation is symbolized by the arrow P.
The reference 11 designates a safety device, comprising a regulator, which lowers the pressure of the propane foun ~ i by the bottle l, the pressure in line 15 being for example of the order of 1.5 bars.

9 References l0a and 10b located respectively upstream and downstream of the apparatus 11, designate manual cut-off valves.
Reference 12 is also a safety device comprising a pressure reducer, the function of which is to further lower the pressure of the propane, at a relatively low pressure, for example between 30 and millibars approximately, the pressure chosen depends on the type of fire used as well only dimensions and power of the burner 5. As an indication, this power East between 50 and 150 KW.
The references 10c and 10d are manual cut-off valves, located respectively upstream and downstream of the apparatus 12.
Reference 13 designates a "mini-gas" pressure switch, and reference 14 a solenoid valve.
As is well known, the pressure switch 13 causes the closure solenoid valve 14 automatically when the gas pressure is below a threshold determined, for example due to fouling of a filter located upstream.
Furthermore, as will be seen below, the solenoid valve 14 is controlled by the installation command and control circuit.
The booster 2 supplies air in the duct 20 at a pressure very slightly above atmospheric pressure.
The direction of air circulation in this duct 20 is symbolized by the arrow A.
Reference 21 designates a valve, with manual control (voluntary) or electric (automatic), allowing air to escape provided by booster 2 outwards when necessary, for example when the solenoid valve 14 is closed (preventing the burner from being supplied by the air only).
As seen in Figure 3, the end of conduit 20 enters in the conduit 16 to form a “T” shaped connection, referenced 3, in which operates the mixture of propane gas P and air A, the circulation of mixture being symbolized by the arrows M in Figures 1 and 2.
The air supply duct 22 of the device 70 is connected to the conduit 20 upstream of the connection 3.
Downstream of said connection, the mixture is supplied, via a conduit 30 in the form of a swan neck to a connection duct 31 connected to the burner 5.

The swan neck shape of portion 30, including the upper portion extends above the water level, prevents backflow of water E
contained in the tank 4 in the mixture supply pipe.
The conduit 31 passes through the bottom of the tank 4 in a sealed manner, thanks to 5 the interposition of an appropriate seal.
This phenomenon is shown in Figure 4, in which the arrows i symbolize the plurality of air streams leaving the burner from the bottom to the up, in causing the boiling water mass (low height) to boil at-above the burner.

10 When this combustible mixture is ignited, a distribution of the flames f over the entire surface of the tank, thus simulating a fire hydrocarbons.
We can play with the color of the flames by modifying the relative percentages of propane and air.
A proportion of 20% air and 80% propane provides flames in red and yellow tones similar to those of a fire hydrocarbons.
As an indication, the height of water E in the tank 4 is of the order of 15 to 20 cm, the thickness of the burner 5 is between 8 and 15 mm, and the height of water above the burner is around 4 to 5 cm.
Always for information, if we are dealing with a circular burner, its diameter is for example of the order of 60 cm.
Of course, other dimensions can be adopted depending on the exercise that we want to implement.
It is fitted with a solenoid valve 18.
The propane supply line 17 to the ignition device 70 is connected to conduit 16 at a point between pressure switch 13 and (solenoid valve 14.
Before starting (exercise, we proceed to the lighting of the tank by means of the device 70.
The booster 2 is switched on, and all the supply valves propane are open, so that:
- the gas mixture feeds the burner 5, via the conduit 31 (arrow M, Figure 1);
- the propane feeds the device 7, via the conduit 17 and the tubing 730 (arrow P ', Figure 1);

11 - done feeds device 7, via conduit 22 and tubing 720 (arrow A ', figurel).
The mixture M comes out of the burner in the form of small air jets i directed from bottom to top, which ensures a certain boiling of the water E in the tank 4.
The pressurized air and propane flows that enter the body hollow 70 mixes there and the mixture is blown into the pipe 78 with a debit relatively large given the small diameter thereof.
In the larger diameter end portion 780 of this pipe gas expansion and slowing down occurs.
We then command (supply of the spark plug with electric current, by closing contactor 610, which generates a spark at the tip of (electrode 62, which is located in portion 780, at the heart of the mixed combustible.
This will cause the mixture to ignite and the mixture in flames spreads to (inside of tube 71, from which it exits through the curved part 710 through which it is directed towards the surface of the water, above the burner 5.
As it also emanates from the latter a flammable mixture, combustion is transmitted to the tank.
A control and command circuit for this installation, referenced 80 in Figure 5, such as a microprocessor, is provided.
It is programmed to ensure the smooth running of the exercise, under optimal security conditions.
As soon as the sensor 8c has detected the presence of flames in the rod tubular 71, said circuit 80 controls the contactor 610 to cause (stop (spark plug power supply 6.
As soon as the sensors 8a, 8b have detected the presence of flames in the tank, it controls the closing of the valve 18.
The combustion then stops within the tube 71, the ignition system being disabled.
The training exercise to extinguish the tank can thus to start.
The presence of the tube 71 above the tank is in no way troublesome for this exercise.
In order to keep the water level in the tank constant (above the burner), and to compensate for any excess water (resulting from the agent

12 advantage) an "overflow" system, not shown, can advantageously to be planned.
Conversely, a make-up water supply system can also be added to compensate for losses due to evaporation.
These two systems could moreover be grouped within a water recirculation device with level control, if necessary team a filter.
As shown in the diagram in Figure 5, the circuit 80 receives information from - ultraviolet radiation probes 8a, 8b, 8c and the sensor 8d;
- circuit 9 for detecting an abnormal level of propane or CO
in enclosure L;
- the temperature probe 93.
This circuit is programmed to drive, according to a program determined, the ignition ignition control switch 610, each solenoid valves 14 and 18, as well as the fan 92.
The microprocessor 80 can of course be controlled so voluntary, for example using a computer keyboard, in order to introduce different operating parameters and monitoring of the operation, and for start and end the exercise.
During the exercise, the trainee must try to extinguish the flames coming out of the hearth, using a suitable type fire extinguisher her disposition.
The actual presence of flames is constantly detected by the different probes 8a, 8b. Their number can of course be greater than two, if we want to make the exercise more difficult.
In fact, the extinction is considered satisfactory when these probes no longer detect a flame, which forces the operator to perform the gesture perfect.
The extinction can also result from sufficient cooling of the focus, which in this case is detected by the 8d sensor which takes into account the making temperature in real time.
In each case, the circuit then causes the closure of the solenoid valve 14, stopping the arrival of propane at the fire.
The air supply can continue, which is not a problem. Air supplied by the booster can also be directed to the outside, by the valve 21.

13 Note that during the whole operation, the electrode is out of reach of the extinguishing agent, and also safe from humidity and splashes of water resulting from the boiling of water E in tank 4, thanks to by the way that it is protected by the tube 71.
This electrode is therefore ready for a new exercise, which can be repeated immediately, in the same manner as described above.
Preferably, the circuit 80 is programmed in such a way that if extinction is not carried out by the trainee beyond a period of given time, for example after one minute, the solenoid valve 14 is still activated of way to shut off the propane supply, thereby automatically extinction of the hearth.
If propane is detected inside enclosure L, by the sensor 90 (which could be caused by a leak or non-ignition for example) or if an abnormal level of carbon monoxide is detected by the sensor 91, the circuit 80 triggers the fan 92 to be maxed out, so as to evacuate these harmful gases from the premises, as well as the shutdown of the propane supply, by ordering the solenoid valve 14.
In the event of an abnormal rise in temperature - which may result from uncontrolled start of fire - temperature sensor 93 also causes the closing of the solenoid valve 14, to stop the supply of propane to the burner.
It is of course possible to provide several fireplaces conforming to the invention inside the same room, these different homes can be fed in whole or in part from the same propane cylinder 1 and / or of same booster 2.
The number and positioning of the different sensors 8, 90, 91 and 93 will of course be adapted to the configuration of the room and the location of the different homes.
As already said, you can change the difficulty of the exercise by playing on the number and orientation of the flame detecting probes 8a and 8b.
Note that if the box 7 can be placed at (safe from any risk, we can use ambient air as an oxidizer for (ignition. For this purpose, the conduit 22 being removed, the pair arrives in the enclosure of the housing 7 via the air intakes 76-77 and 76'-77 'suitably set, then at (mouth 76. The arrival of gas pressurized fuel in the hollow body 72 generates suction sufficient for bring in Pair.

14 The correct fuel gas - combustion air dosage can be adjusted to by means of cam 75 and, if necessary, by means of concealable openings 76-77 and 76'-77 '.
The installation can be planned in a fixed or mobile room, by example inside a truck of the kind described in EP-0 146 465 already city.

Claims (15)

1. Exercise facility for training people with extinguishing a fire that simulates a hydrocarbon fire, this installation including:
- a hearth consisting of a gas burner (5) which is immersed in water (E) contained in a tank (4);
- means (1, 2, 3, 30, 31) for supplying the burner (5) with a gas mixture fuel, such as propane, and air;
- an electrode (62) capable of igniting the gas at the start of exercise;
characterized by the fact that it is provided with an ignition system including a casing (7) positioned close to said tank (4), the interior space of which is thermally protected, and which is provided with a tube (71) resistant to heat, by example of stainless steel, the free end of which opens at a short distance to-above the surface of the water (E) contained in the tank (4), while at inside of this housing are arranged, on the one hand, a device (70) capable of blowing into this tube (71) a mixture of combustible gases, such as propane and air, and other part One spark plug (6) provided with said electrode (62), the latter extending axially to inside the tube (71), over only part of its length. 2. Installation according to claim 1, characterized in that said device (70) for blowing the gas mixture into the tube (71) combustible and air is a hollow body having inlet mouths (720, 730), for the fuel gas and air. 3. Installation according to claim 1 or 2, characterized in that that it includes a means (8c) for controlling the presence of flame inside from tube (71), such as an ultraviolet radiation detector, this means of control (8c) being located inside said casing (7), at the entrance to this tube (71). 4. Installation according to one of claims 1 to 3, characterized by the fact that said tube (71) has the shape of a cane, its portion free end (710) being curved and turned downwards, to emerge just above of the surface of the water (E) contained in the tank (4). 5. Installation according to one of claims 1 to 4, characterized by the fact that said burner (5) is powered by the combustible gas mixture and air via a "gooseneck" pipe (30). 6. Installation according to one of claims 1 to 5, characterized by the fact that it comprises flame extinguishing control means present in the tank (4), such as ultraviolet radiation probes (8a, 8b). 7. Installation according to one of claims 1 to 6, characterized by the fact that it comprises flame extinguishing control means present in the tank (4), such as at least one temperature sensor (8d), for example consisting of a thermocouple type probe, relayed by a sensor clever, able to detect a temperature in real time near the hearth. 8. Installation according to one of claims 1 to 7, characterized by the fact that it comprises a control circuit capable of automatically cutting fuel gas supply to the burner if the extinguishing of the flames in the tank (4) has not been detected beyond a period of time determined at count ignition. 9. Installation according to one of claims 1 to 8, characterized by the fact that the combustible gas is supplied from a tank under pressure (1) and the air by means of a booster (2), the mixing being done by a connection (3) in "T", in which the air supply duct (20) enters, perpendicularly, to inside the conduit (16) for supplying fuel gas. 10. Installation according to claims 2 and 9 taken into combination, characterized in that the air is supplied to said device (70) to means of a feed pipe (22) which is connected to the inlet mouth of air (720) and is supplied with air by said booster (2). 11. Installation according to claims 2 and 9 taken into combination, characterized in that the combustible gas is supplied to said device (70) by means of a supply conduit (17) which is connected to the fuel gas inlet mouth (730), and is supplied with gas combustible from pressure tank (1) 12. Installation according to claim 11, characterized in that said housing (7) is equipped with a gas flow adjustment member (75) combustible admitted. 13. Installation according to claims 2 and 9 taken into combination, characterized in that the air is supplied to said device (70) to means of at least one air intake vent with adjustable flow (76-77) mounted in the housing wall (7). 14. Installation according to one of claims 1 to 13, characterized in that said casing (7) is lined internally with a layer of material thermally insulating. 15. Installation according to one of claims 1 to 14, characterized in that the burner (5) is made of stainless steel fibers intertwined.