WO2009098167A1

WO2009098167A1 - Fireplace for burning a liquid fuel with air

Info

Publication number: WO2009098167A1
Application number: PCT/EP2009/051048
Authority: WO
Inventors: Thierry Rousseau
Original assignee: Brisach
Priority date: 2008-02-04
Filing date: 2009-01-30
Publication date: 2009-08-13
Also published as: FR2927149B1; FR2927149A1; EP2250438A1

Abstract

The invention relates to a fireplace of the burner type (1) for burning a liquid fuel, that comprises a combustion chamber (3) for receiving a liquid fuel in contact with air used as an oxidizer, and a combustion interruption means for stopping the combustion, wherein the interruption means is adapted for withdrawing the fuel at least partially outside the combustion chamber (3) upon the activation thereof.

Description

CHIMNEY FOR COMBUSTION OF A LIQUID FUEL WITH AIR

The invention relates to a chimney for generating flames from the combustion of a liquid fuel disposed in contact with the air.

The invention is particularly applicable to fireplaces operating with alcohol of vegetable origin.

These fireplaces are mainly intended for decorative use to create an indoor environment or outdoor living. They can be placed in a fireplace hearth, or in any decorative element. Their size is limited and their handling is easy, they can easily be integrated into all types of decor. These chimneys are commonly referred to as "ductless chimneys", "liquid fuel fireplaces" or "burners". In the following description they are designated burners but should not be assimilated to burners including industrial whose constraints are far removed from those chimneys object of the present invention.

In known manner, burner type chimneys comprise a combustion chamber for receiving a liquid fuel whose free surface is disposed in contact with the air. Ignition of a flame in the vicinity of the free surface of the fuel causes combustion of the fuel with air.

Moreover, these chimneys are equipped with stop means intended to be controlled by the user in order to stop the combustion. These stop means comprise a flap movable between two positions and allow the user to selectively shut off or leave open the opening of the combustion chamber. When the flap is open, the air acting as an oxidizer freely accesses the fuel and maintains combustion. When the shutter is closed, the air can no longer access the interior of the room resulting in the extinction of the fire.

Any significant improvement in the safety of these chimneys would be appreciable. The safety of these chimneys must be all the higher as they are intended to be used without permanent surveillance and especially inside the homes. The present invention aims to improve the safety of the use of existing burner type chimneys. For this purpose there is provided according to the present invention a burner type chimney for liquid fuel combustion, comprising a combustion chamber for receiving a liquid fuel disposed in contact with air as an oxidizer and means for stopping the fuel. combustion means for stopping combustion, the stopping means being arranged to remove fuel from the combustion chamber when activated.

Thus, by providing for extracting the fuel out of the combustion chamber, the invention makes it possible to eliminate any contact between the fuel and the oxidant, which results in a final and relatively rapid cessation of the combustion. However, the applicant has found that in existing burners equipped with shutters, there is a risk that the combustion continues or resume while the user thinks that it is permanently stopped.

Indeed, a reopening of the shutter made sufficiently close in time after closing the shutter can automatically generate immediately a flame of considerable magnitude and cause the resumption of combustion. This flame is particularly dangerous since it often reaches up to the face of the user. The applicant realized that the risk of the fire restarting itself continues as long as the temperature of the burner does not fall below a given temperature. However, with alcohol type fuels of essentially vegetable origin, this given temperature is relatively low (of the order of 425 ° C).

In addition the chimney comprises control means arranged to control the activation of the stop means when they are stressed and detection means arranged to detect an abnormal operating state and to solicit the control means when an abnormal state operation is detected.

The invention, by removing the fuel from the combustion chamber, eliminates any risk of recovery of combustion. The invention thus offers a significantly improved security compared to existing systems.

The chimney according to the invention may furthermore optionally have at least any of the following characteristics:

the stop means comprise a pump fluidly connected to the combustion chamber and shaped to pump the fuel out of the combustion chamber when the stop means are activated,

the pump is a peristaltic pump,

the chimney comprises a fuel tank fluidly connected to the combustion chamber, the pump being arranged between the tank and the combustion chamber,

the chimney comprises control means arranged to control the activation of the stop means when they are requested by the user, the chimney comprises control means arranged to control the activation of the stop means when they are stressed and comprises detection means arranged to detect an abnormal operating state and to solicit the control means when an abnormal state operation is detected,

the detection means comprise at least one detector of

CO2,

the detection means are arranged to control the inclination of the fuel in the combustion chamber; the detection means comprise at least two fuel level sensors;

the chimney comprises a buffer tank fluidly connected to the combustion chamber and in which the level sensors are arranged, the chimney comprises a fuel supply duct, one end of which forms a fuel inlet for the combustion chamber, and a flap shaped on said inlet so as to extinguish the flame by smothering.

the chimney comprises a reservoir provided with a filling orifice and a closure system comprising a valve movable between a closed position preventing filling of the reservoir and an open position allowing the tank to be filled,

it comprises a locking device arranged to lock the valve in the closed position,

the control means are arranged to control the locking device so as to automatically lock the valve in the closed position when a value relating to the inclination of the burner or to the temperature of the combustion chamber, or to the temperature of the means of control or at the content of a given gas reaches a predetermined value

it comprises a tank and overflow signaling means arranged to signal to a user that the tank contains a fuel level equal to or greater than a predetermined maximum level

- It comprises additional security means arranged to automatically control the activation of the stop means when the energy level available to the fireplace to operate is less than or equal to a given threshold.

According to the invention there is furthermore provided a method for stopping the combustion of a combustion chamber of a burner-type chimney for liquid fuel combustion, in which stop means are available for stopping the combustion, and in which the stopping means at least partially removes the fuel from the combustion chamber when activated.

Other characteristics, objects and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of non-limiting example and in which:

FIG. 1 is a perspective view of a chimney according to an exemplary embodiment of the invention,

FIG. 2 is a perspective view of the chimney illustrated in FIG. 1 and in which the upper plate has been taken; FIG. 3 is a perspective view of the chimney illustrated in FIG.

1 in which the housing has been removed,

FIG. 4 is a side view of the chimney illustrated in FIG. 1 and in which the housing has been removed,

FIG. 5 is a view along a longitudinal section of the chimney illustrated in FIG. 1;

FIG. 6 is a view in cross-section of the chimney illustrated in FIG. 1;

- Figure 7 is a perspective view of a portion of the chimney illustrated in Figure 1 and on which appears a closure system of the tank.

With reference to FIGS. 1 to 7, an example of a chimney according to the invention is illustrated. As a reminder, in the present application by burner 1 denotes a chimney type duct whose vocation is mainly aesthetic and decorative.

The burner 1 according to the invention comprises a combustion chamber 3. The combustion chamber 3 comprises a bottom 4 and side walls defining a volume for receiving a liquid fuel. The combustion chamber 3 also has an opening to allow the fuel to mix with the air of the surrounding medium. During operation the fuel rests in the volume defined by the bottom and the walls. The volume contains only fuel and air during operation. Inside the chamber the fuel can move freely.

When a flame or spark is approaching the free surface of the fuel, combustion is triggered between the fuel and the air acting as an oxidizer. Only the air in the vicinity of the free surface of the fuel participates in the combustion. The chimney does not require a device for injecting, feeding or propelling air in the vicinity of the fuel. The combustion chamber is largely open and the air naturally present near the free surface of the fuel is sufficient to ensure the desired combustion. Advantageously, the fuel used is alcohol of vegetable origin.

The burner 1 according to the invention can work with many other liquid fuels.

The burner 1 further comprises stop means arranged to extract the fuel from the combustion chamber 3 in order to permanently interrupt the combustion. Thus, when the stop means are activated and the fire is extinguished there is no more fuel in the combustion chamber 3 so that the fire can not resume of itself.

The activation of the stop means for extracting the fuel from the combustion chamber 3 is triggered by control means which are described below.

In addition to reducing the risk of self-ignition, the invention significantly reduces the fuel consumption of conventional burners. Indeed, the invention provides for removing all the fuel from the combustion chamber 3 when the burner 1 is not used. Thus, the combustion chamber 3 is not the seat of a fuel evaporation in the non-operating phase. However, in conventional burners, the fuel remains in the combustion chamber 3 even after stopping the combustion and thus evaporates continuously.

The burner 1, object of the present invention, thus reduces fuel evaporation.

Moreover, when stopping combustion, the fuel remaining in the combustion chamber 3 generally has a high temperature. However, the higher the temperature of the fuel, the more its evaporation at the combustion chamber 3 is important. Thus, by providing for an evacuation of the fuel as soon as the combustion is stopped, the invention particularly effectively reduces the evaporation of fuel at the level of the combustion chamber 3.

In a preferred embodiment, the burner 1 according to the invention comprises a reservoir 2 arranged in fluid relation with the combustion chamber 3 so that the fuel extracted from the latter is transferred into the tank 2. Moreover, the latter is substantially hermetic, so that the fuel it contains does not evaporate.

The invention therefore makes it possible to reduce the evaporation and the fuel consumption of the whole of the burner 1.

Advantageously, the stop means comprise a pump 14 for transferring the fuel from the tank 2 to the combustion chamber 3 and vice versa. The pump 14 is disposed between the reservoir 2 and the combustion chamber 3.

Preferably, the tank 2 has a volume significantly greater than that of the combustion chamber 3. It is arranged in the lower part of the burner 1. It serves as a frame and has an upper face intended to cooperate with a housing 30.

The housing 30 has side walls. It is intended to cooperate with the tank 2 to be placed above the latter and to house the first 16, second 18 and third 5 conduits, the control means, the pump

14, the buffer tank 10 and the combustion chamber 3.

Thus, the burner 1 comprises a support 15 secured to the casing 30 and arranged to receive and raise the combustion chamber 3 relative to this same upper face.

The pump 14 is also removably mounted on one of the faces of the casing 30.

Preferably, the pump 14 is a peristaltic pump 14. Therefore, it allows the alternative transfer of the tank 2 to the combustion chamber 3. Moreover, when it is not engaged, it eliminates the fluid communication between the combustion chamber 3 and the tank 2.

The use of such a pump does not require sealing between the cooperating parts in motion. It therefore reduces the risk of leakage, reduces maintenance and improves the life of the burner. The burner 1 comprises control means arranged to control the pump 14 various actions. Thus, the control means are arranged to control the deactivation of the pump 14, the activation of the pump 14 so as to fill the combustion chamber 3, or the activation of the pump 14 so as to empty the chamber of combustion 3. The control means comprise an electronic card removably attached to the casing 30.

The burner 1 further comprises a control panel 22 which serves as a control and signaling interface between the user and the burner

1. The console is connected to the electronic card and includes display means for notifying the user of any malfunction and possibly the selected mode of operation. The console 22 further comprises a button for controlling the start or stop of the combustion.

Thus, when the user controls the cessation of combustion via the control panel 22, the electronic card triggers the activation of the pump 14 so that the latter empties the fuel present in the combustion chamber. 3. When chamber 3 no longer has fuel, the fire stops. Thus, between two uses of the burner 1 the combustion chamber 3 remains empty. During a subsequent start of the burner 1, the user controls, via the control panel 22, the electronic card to engage the pump 14 to transfer fuel from the tank 2 to the chamber of combustion 3.

Advantageously, the burner 1 comprises detection means arranged to transmit to the control means information relating to the inclination of the burner 1 and / or the temperature of the combustion chamber 3 and / or the temperature of the electronic card and or at the concentration of a given gas in the environment of the burner 1, such as CO.sub.2 or CO. These signals are respectively detected by at least two level sensors 13, at least one temperature sensor and at least one sensor. 19 of the given gas.

The control means are arranged to control the deactivation or activation of the pump 14 when from the information received from the detection means, they detect that the burner 1 reaches an inclination greater than a predetermined value of inclination or that the The electronic board reaches a temperature above a predetermined temperature value or the environment of the burner 1 has a given gas content greater than a predetermined concentration.

Advantageously, the burner 1 comprises a buffer tank 10 arranged in fluid communication with the tank 2 and with the combustion chamber 3. The buffer tank 10 comprises a bottom 11, an upper face and side faces. It is intended to contain fuel. It is arranged so that the free surface of the fuel it contains is, by gravity, substantially in the same plane as the free surface of the fuel present in the combustion chamber 3.

Thus, the level of fuel in the buffer tank 10 makes it possible to determine the level of fuel contained in the combustion chamber 3. A first conduit 16 fluidly connects the reservoir 2 to the pump 14.

A second conduit 18 fluidly connects the pump 14 to the bottom of the buffer tank 10. A third conduit 5 fluidly connects the bottom 11 of the buffer tank 10 to the bottom 4 of the combustion chamber 3. Advantageously, the third conduit serves as a siphon to prevent the spread of fire and gases from the combustion chamber 3 to the buffer tank 10.

Preferably, the level 12 and inclination sensors 13 are arranged at the level of the buffer tank 10. Thus, they make it possible to reflect the fuel level and the inclination in the combustion chamber 3 while being deported out of this position. last which can be subjected to the flames and to important constraints in particular thermal.

As soon as one of the two inclination sensors detects the presence of liquid, the control means consider that the buffer tank and therefore that the combustion chamber 3 have reached the predetermined limit value of inclination. The control means then trigger the activation of the pump 14 to empty the combustion chamber 3. It may be the same when the levels detected by the level 12 and inclination sensors 13 differ by a value greater than one. given threshold. It can also be provided that the extraction of the fuel from the chamber 3 is controlled by an interaction of the data taken by the level sensor 12 and by a tilt sensor 13. The control means can also trigger the extraction of the fuel outside the chamber 3 in response to the information received from the detection means when they detect an excessive temperature in the combustion chamber 3 or at the electronic card or detect an abnormal content of a given gas.

Under the effect of the pumping, the fuel contained in the combustion chamber 3 passes successively in the third conduit, then in the buffer tank, then in the second conduit 18, then in the pump 14, then in the first conduit 16, then finally in the tank 2.

Preferably, the chimney comprises regulating means arranged so that the fuel level of the combustion chamber 3 is less than or equal to a predetermined upper limit. Advantageously, said upper limit is less than 15 millimeters. Said upper limit is less than 8 millimeters. Even more advantageously, the regulation means are arranged so that the fuel level of the combustion chamber 3 remains between 1 millimeter and 5 millimeters. The regulation means make it possible to obtain a fire exhibiting qualities as unexpected as remarkable in terms of crackling as well as in terms of liveliness and flame color.

Furthermore, maintaining the fuel level below said lower limit limits the evaporation of the fuel.

In addition, the combination of stop means and control means makes it possible to stop combustion in a short time. Indeed, for a fuel level maintained at about 4 millimeters, it is easy to obtain a flushing time of the combustion chamber 3 which is less than two minutes.

Optionally, the burner 1 according to the invention comprises a shutter 7 for closing the combustion chamber 3. This closure flap 7 cooperates with a lever 8 that the user is intended to activate when he wishes to reduce the flame or to stop combustion. When the handle 8 is activated, the flap 7 closes the chamber hermetically. As a result, the combustion chamber 3 runs out of fuel and the fire stops. The combination of the closure flap 7 and the stop means allows a final and particularly rapid stop of the combustion.

Advantageously, the support 15 is arranged to be able to position in a simple, precise and stable way the combustion chamber 3 and the buffer tank 10. The support 15 can be obtained by laser cutting in particular.

Optionally but nevertheless advantageous, the burner 1 according to the invention comprises additional security means. These means are arranged to control the amount of energy available to the burner to operate. They are also shaped to automatically control the activation of the stop means when this amount of energy is less than or equal to a given threshold. Thus, if the batteries of the burner 1 are not enough charged the fuel is automatically removed from the combustion chamber 3. Therefore the invention eliminates the risk that a decrease in the charge of the batteries prevents the functioning of the organs 12, 13 , 14, 19, 40 ensuring the safety of the burner 1. In particular the additional security means activate the stop means before the energy level of the batteries is insufficient to operate the stop means, that is to say for example the operation of the pump, the detection by the sensors 12, 13, 19 of a temperature or an abnormal inclination, of a given gas etc. They thus greatly enhance security. These additional security means may include an energy level sensor and software integrated in the electronic card.

Preferably, the burner 1 comprises a plate 31 shaped to cooperate with the side walls of the housing 30 so as to cover the different members of the burner 1. Recesses are made in the plate 31 and the housing 30 to allow free access to the combustion chamber 3, the filling orifice 17 of the tank 2, the control panel 22 and ventilation zones. The main purpose of the aeration zones is to contribute to the cooling of the electronic part of the burner. The burner is arranged so that as little heat as possible is transferred from the combustion chamber to the other particular electrical organs. Thus, the contact surface between the combustion chamber 3 and the support 15 is deliberately limited, and the convection exchanges with the outside are favored.

The invention as described above improves the fire control generated by a burner 1. Moreover it has a limited size and simplicity.

Optionally and independently of the control means described above, the burner 1 comprises means for stopping combustion by smothering when only a small quantity of fuel remains in the combustion chamber 3, this quantity being millimeter order. These means generally have a form of flap 6 covering the orifice through which the combustion chamber 3 communicates with its supply duct 5. These means also allow fluid communication between the combustion chamber 3 and its duct. power supply 5.

The flap 6 may be attached to the bottom 4 of the combustion chamber 3. Preferably it is obtained by V-folding a sheet. It has for example a cylinder portion shape extending along an axis substantially parallel to the plane of the bottom 4 of the combustion chamber 3 and whose ends are open.

The burner 1 comprises a system for filling the tank 2 illustrated in FIG.

The system comprises a filling channel 42, one end of which opens into the tank 2 and whose other end has an orifice through which the user is intended to pour the fuel.

Advantageously, the filling system is arranged so that the orifice is contained in the plane of the plate 31.

The burner comprises a closure system 40 equipped with a shutter valve 41 shaped to selectively allow or prevent access to the filling channel 42. The valve 41 is movable between two positions: in a so-called closed position it mask the hole and prevent filling. In a so-called opening position it allows free access to the orifice and allows the filling.

Advantageously, the valve 41 passes alternately from one position to another by sliding. This sliding takes place in a plane parallel to that around the filling orifice 17. This sliding is guided by a rail 47 integral with the reservoir 2. The valve 41 and the rail 47 have complementary shapes to ensure their cooperation in translation. These complementary shapes can be obtained by folding in particular. The rail

47 extends above the orifice and in a plane parallel to that of the orifice. It has a recess disposed opposite the orifice and shaped to allow free access to the filling channel 42. Thus, the rail 47 provides the valve 41 guiding over the entire travel length in translation.

Furthermore, the cooperation between the filling channel 42, the rail 47 and the valve 41 is made such that in the closed position, the valve 41 completely covers the filling channel 42. Thus, when the valve 41 is closed the The invention makes it possible to limit the evaporation of the fuel out of the tank 2.

The movement of the valve 41 may be manually driven by the user. For this purpose, the valve 41 comprises a tongue 46 connected to a handle not shown in the figures. The control means are arranged so that the valve is closed by default. Furthermore, the control means do not allow the valve to open when fuel is still present in the tank 2, or when the temperature sensor detects an abnormally high temperature.

Alternatively or in combination with a manual opening handle, it can be provided that the movement of the valve 41 is triggered by the control means. For this purpose, at least one button is provided at the control console 22 which, when it is actuated, triggers the opening or closing of the valve 41. It is also possible for the closure of the valve 41 to be automatically controlled by the control means when the inclination sensors 13 detect an abnormal inclination of the burner 1, or when the temperature sensor detects a too high temperature at the level of the combustion chamber 3 or at the level of the electronic card, or when the detector 19 gas detects an abnormal content of a given gas such as CO2.

The closure system 40 further comprises a locking device 43 of the valve 41 in the closed position.

This device makes it possible to prevent the valve 41 from opening. It comprises a member acting as a bolt 45 and intended to act as a retractable abutment in translation for the valve 41. A light made in the guide rail 47 allows the bolt to The latch 45 is slidably mounted on an element secured to the casing 30 to selectively prevent or allow translation for the valve 41. The bolt 45 can be moved manually by the user. The possibility of moving the bolt 45 may be subject to an authorization issued by the control means ensuring that the burner 1 operates normally.

In a preferred embodiment, the locking device 43 comprises an actuator 44 controlled by the control means and intended to automatically move the bolt 45. The actuator 44 may include in particular an electromagnetic coil within which a portion of the bolt 45 is intended to slide. The bolt 45 has at least partly a ferromagnetic element. Under the effect of a voltage applied to the coil, the electromagnetic field generated by the latter causes the bolt 45 to move in at least one direction and to the closed position or the open position. The translation in the other direction can be obtained either by the coil, or by a spring-type return element, or even by gravity.

The control means can trigger the locking of the valve 41 in the closed position in the following case in particular:

A locking button integrated into the control panel 22 is actuated by the user,

The detection means detect an abnormal inclination of the burner 1, or an abnormally high temperature at the combustion chamber 3, or an abnormal content of a given gas. Thus, the closure system 40 limits fuel leakage from the tank 2 when the valve 41 is in the closed position. Moreover, it makes it possible to prevent any unintentional opening of the filling orifice 17. In addition, the burner 1 according to the invention makes it possible to automatically lock the flap 7 as soon as a risk is detected by the detection means. In particular, any filling of the tank 2 or opening of the latter is made impossible if the temperature in the combustion chamber is too high. However, in existing burners, the opening or filling of the tank while fuel is carried a high temperature presents a significant risk of safety. The invention therefore makes it possible to considerably enhance the safety of existing burners.

It should be noted that the closure system 40, as well as the locking device 43 can be operated independently of the stop means described above. Thus, they could each be specifically and independently protected.

Optionally, the burner 1 further comprises overflow signaling means for signaling to the user that the tank 2 contains a fuel level equal to or greater than a predetermined maximum level.

Usually, the filling of the burner 1 is carried out by pouring fuel from a container into the tank 2 via a filling orifice 17. Such filling is inconvenient and often leads, when the tank 2 is full, the spillage of even a small amount of fuel in the burner 1. The control of the amount of spilled fuel is even more difficult to control that cans are often bulky, heavy and therefore difficult to handle. It can be provided to use a pump, for example manual and equipped with a pear to transfer the fuel from the container to the tank

2.

The subsequent operation of the burner 1 can cause combustion inside the burner 1, which leads to the deterioration of the latter and a major risk of safety.

The invention, by providing overflow signaling means, allows the user to stop the filling before any overflow.

The overflow signaling means comprise a level sensor disposed in the tank 2 or in the filling channel 42. They also include visual warning means such as light-emitting diodes (LEDs) or audible warning means. such as a buzzer.

Therefore, the overflow signaling means contribute to enhancing the safety of existing burners.

These overflow signaling means can be implemented independently of the stop means, or the closure system 40, or the locking device 43 described above. They could therefore be subject to specific and independent protection.

The stop means, the control means, the locking device 43 and the overflow signaling means are supplied with electricity. This power supply is provided by a connection to a source of electrical energy external to the burner 1 or, preferably, by batteries or batteries housed in a compartment 21 housed inside the housing 30. Although the chimney object of the present application is primarily intended for decorative use, it can serve, additionally, as auxiliary heating.

The present invention is not limited to the embodiments described above, but extends to any embodiment within its spirit.

In a variant embodiment, a reservoir

2 upper is arranged relative to the combustion chamber 3 so that the latter can be filled by gravity by the tank 2. A valve, controlled by the control means, then regulates the supply of the combustion chamber 3 .

Furthermore, it is possible to provide a lower tank 2 and a second valve arranged in fluid communication with the combustion chamber 3 and in such a way that the control means trigger the opening of the valve when the fuel level in the combustion chamber 3 reaches or is greater than said upper limit so that the fuel of the combustion chamber 3 passes, by gravity, in the lower tank 2.

REFERENCES

1. Burner

2. Tank 3. Combustion chamber

4. Background

5. Feed duct

6. Bib

7.Volet 8. Joystick

10. Buffer tank

11. Buffer tank bottom

12. Level sensor

13. Tilt sensor 14. Pump

15. Support

16. First conduit

17. Filling hole

18. Second conduit 19.Gas sensor

20. Case

21. Battery compartment

22. Control panel

3O.Carter 31. Platinum

4O.Closing system

41. Check valve

42. Filling channel

43. Locking device 44. Actuator

45. Pole

46. Tongue

47.RaN

Claims

1. Burner type chimney (1) for liquid fuel combustion comprising a combustion chamber (3) for receiving a liquid fuel disposed in contact with air as an oxidizer and combustion stop means for stopping combustion, characterized in that the stop means are arranged to remove the fuel at least partly out of the combustion chamber (3) when activated and in that the chimney comprises control means arranged to control the activation of the stop means when they are biased and detection means arranged to detect an abnormal operating state and to solicit the control means when an abnormal operating state is detected.

2. Chimney according to the preceding claim, wherein the stop means comprises a pump (14) fluidly connected to the combustion chamber (3) and shaped to pump the fuel out of the combustion chamber (3) when the means of stop are activated.

3. Chimney according to the preceding claim, comprising a reservoir (2) of fuel fluidly connected to the combustion chamber (3), the pump (14) being disposed between the reservoir (2) and the combustion chamber (3).

4. Chimney according to any one of the preceding claims, comprising control means arranged to control the activation of the stop means when they are requested by the user.

5. Chimney according to any one of the preceding claims, wherein the detection means comprise at least one detector of a given gas.

6. Chimney according to any one of the preceding claims, wherein the detection means are arranged to control the inclination of the fuel in the combustion chamber (3).

7. Chimney according to the preceding claim, wherein the detection means comprise at least two fuel level sensors (13, 13) and having a buffer tank.

(10) fluidly connected with the combustion chamber (3) and wherein the level sensors (13) are arranged.

8. Chimney according to any one of the preceding claims, comprising a fuel supply pipe (5), one end of which forms a fuel inlet for the combustion chamber (3), and a flap (6) shaped on said inlet so as to prevent a possible backfire in the supply duct (5).

9. Chimney according to any one of the preceding claims, comprising a reservoir (2) provided with a filling orifice (17) and a closure system (40) comprising a valve (41) movable between a closed position. preventing the filling of the tank (2) and an open position allowing the filling of the tank (2).

10. Chimney according to the preceding claim, comprising a locking device (43) arranged to lock the valve (41) in the closed position.

11. Chimney according to the preceding claim, wherein the control means are arranged to control the locking device (43) so as to automatically lock the valve (41) in the closed position when a value relative to the inclination of the burner or the temperature of the combustion chamber, or the temperature of the control means or the content of a given gas reaches a predetermined value.

12. Chimney according to any one of the preceding claims, comprising a tank (2) and overflow signaling means arranged to signal to a user. the tank (2) contains a fuel level equal to or greater than a predetermined maximum level.

13. Chimney according to any one of the preceding claims comprising additional security means arranged to automatically control the activation of the stop means when the energy available to the chimney to operate is less than or equal to a given threshold.

14. A method for stopping the combustion of a combustion chamber (3) of a burner-type chimney (1) for liquid fuel combustion, in which stop means are provided for stopping the combustion, characterized in that the stopping means at least partially remove the fuel from the combustion chamber (3) when activated and that control means and detecting means are available so that when the detecting means detects an abnormal operating state they solicit the control means and the latter activate the stop means for removing the fuel from the combustion chamber.