JP6031056B2 - Combustion equipment - Google Patents

Description

  The present invention relates to a combustion device that drives a blower by an electromotive force generated by using combustion heat.

In the conventional combustion equipment, there is an equipment that generates electricity using the combustion heat of the combustion equipment without using an external power source, and covers all or a part of the electric power necessary for the combustion equipment.
Patent Document 1 is an example of a combustion device that enables such power generation, and as shown in FIG. 1, is a fan heater 100 including a thermoelectric generator 4 inside.

Specifically, the thermoelectric generator 4 has a high-temperature part 2 heated by combustion heat obtained by burning gas in the burner part 10 and a low-temperature part 3 cooled by taking in air from the outside. 2 and the low temperature part 3 have a thermoelectric element 1.
The thermoelectric element 1 utilizes the Seebeck effect and is an element that generates a thermoelectromotive force due to a temperature difference between the high temperature part 2 and the low temperature part 3.
The fan heater 100 has a fan 12 that is driven by the thermoelectromotive force of the thermoelectric generator 4.
Thereby, the fan heater 100 can blow out the combustion heat which burned gas in the burner part 10 as a warm air using the fan 12 driven with the thermoelectric generator 4, even if it does not connect to a commercial power source.

JP 2001-255018 A

By the way, since the thermoelectric element 1 generates a thermoelectromotive force necessary for the fan 12 due to a predetermined temperature difference between the high temperature portion 2 and the low temperature portion 3 (300 ° C. in Patent Document 1), even if the burner 10 burns, The fan 12 is not driven immediately until a predetermined temperature difference occurs.
For this reason, in Patent Document 1, if the fan 12 is driven, hot air is discharged from the casing. However, the casing is continuously heated by the combustion heat of the burner 10 until the fan 12 is driven. It is. The situation where the casing is heated is the same when the fan 12 stops due to a failure.
An object of the present invention is to prevent the above situation, and an object of the present invention is to provide a safe combustion device by preventing overheating of a casing even when a blower is not driven.

The above-mentioned problem is caused by a combustion chamber having a burner in a casing, and a thermoelectric element formed between a high-temperature part and a low-temperature part using the combustion heat of the burner and formed of a semiconductor that exhibits the Seebeck effect. Thermoelectric conversion means for generating an electromotive force is disposed, and an axial fan is driven by the thermoelectromotive force to discharge the combustion heat from a blowout port formed in the housing. The housing has a heat radiating port for releasing the combustion heat generated from the combustion chamber to the outside above the blowout port, and the wind of the axial fan on the inside to the blowout port side. The combustion chamber has an opening that guides the heat of combustion into the housing below the heat radiating port, between the opening and the heat radiating port, and On the outlet side of the flow path A turning section is provided that suppresses the combustion heat from being removed from the heat radiating port when the axial fan is driven, and directs the suppressed combustion heat in the direction of the outlet by the wind from the axial fan. The flame of the burner, the high temperature part, the thermoelectric element, the low temperature part, and the axial fan are solved by a combustion device arranged in a line in the horizontal direction in that order .

In the combustion apparatus of the present invention, thermoelectric conversion means for generating a thermoelectromotive force is disposed by a thermoelectric element disposed between a high temperature portion and a low temperature portion using the combustion heat of the burner, and the fan is blown by this thermoelectromotive force. It is driven to release the combustion heat from the outlet. Therefore, for example, even when outdoors without an external power supply or during a power failure, the blower can be driven to use the combustion device.
Here, the casing has a heat radiating port for releasing the combustion heat generated from the combustion chamber to the outside above the blowing port. Therefore, in a predetermined time period until the blower is driven by the thermoelectric conversion means, or when, for example, the thermoelectric conversion means breaks down, the combustion heat is released from the upper heat radiation port to prevent overheating of the housing. Can do.
In addition, since the blowout port is formed on the lower side separately from the heat release port, the time when the blower is operating normally releases combustion heat from the lower blowout port, The space can be warmed up efficiently.
In addition, the combustion chamber has an opening that guides combustion heat into the housing below the heat radiating port. Between the opening and the heat radiating port, the combustion heat escapes from the heat radiating port when the axial fan is driven. There is provided a turning portion that suppresses the combustion heat and directs the suppressed combustion heat toward the blowout port by the wind from the axial fan. In addition, "suppressing that the heat of combustion escapes from the heat radiating port" here means giving a required resistance to the flow of the combustion heat from the opening toward the heat radiating port, and before starting the axial flow fan, It does not mean that the combustion heat flow path from the opening to the heat radiation port is blocked. Therefore, by providing such a turning portion, the combustion heat rising from the opening can be released from the heat radiating port before the axial fan is started. When the axial fan is driven, the wind of the axial fan is applied to the combustion heat whose flow toward the heat radiating port is suppressed, the vector of the flow of the combustion heat is changed in the direction of the outlet, Even if there is, it is possible to effectively release the combustion heat from the outlet.
Moreover, the thermoelectric element is formed of a semiconductor that exhibits the Seebeck effect, and the flame of the burner, the high temperature part, the thermoelectric element, the low temperature part, and the axial fan are arranged in a line in the horizontal direction in that order. If it does so, a flame and a high temperature part will face, a high temperature part will be heated earlier, and the starting time of an axial fan can be shortened more. Further, the low temperature part and the axial fan face each other, and the low temperature part can be efficiently cooled. Further, a compact arrangement is possible by arranging the flames, the thermoelectric conversion means, and the axial fan in a line without causing any extra members to face each other.

Preferably, the outlet is arranged so that the opening of the combustion chamber faces.

Preferably, the high temperature portion is disposed in the combustion chamber, and an air inlet for cooling the high temperature portion is formed in the combustion chamber.
If it does so, since the high temperature part is arrange | positioned in a combustion chamber, a high temperature part can be heated quickly and the starting time of a fan can be shortened.
Then, after the high temperature part is heated, the blower is activated and air is introduced from the air inlet to cool the high temperature part, so that even if the high temperature part is arranged in the combustion chamber, Can be controlled not to exceed.

Also, preferably, wherein said air inlet and said axial fan is arranged to face.
When doing so, since the air inlet and the axial fan has been face-to-face, by feeding directly to vigorously combustion chamber wind of the axial flow fan, it is possible to effectively prevent a situation in which the high-temperature portion becomes too hot. Therefore, when the axial fan starts to drive, this time, the high-temperature part is effectively cooled by the wind of the axial fan , preventing the thermoelectric element from exceeding the heat-resistant temperature, and maintaining a proper power generation state with a simple configuration can do.

  Preferably, the fuel source of the burner is a cartridge type gas cylinder in which a compressed liquefied gas is accommodated, and a combustion device having excellent portability can be provided.

Preferably, the low temperature part and the cartridge type gas cylinder are connected via a heat conducting member.
Then, since the cartridge type gas cylinder containing the liquefied gas has a characteristic that the gas cylinder is gradually cooled as the gas is ejected, as the thermoelectric conversion means is heated, the temperature of the low temperature portion is easily increased. Even so, the low temperature part can be effectively cooled by turning the cold heat of the gas cylinder to the low temperature part. Therefore, an appropriate power generation state can be maintained.

In addition, preferably, it has a notifying means for notifying that the thermoelectric conversion means is generating electricity.
Therefore, the user can recognize the state of power generation of the thermoelectric conversion means. For example, even when the thermoelectric conversion means breaks down and the casing is heated excessively, it is possible to recognize it and avoid danger.

  As described above, the present invention can provide a safe combustion device by preventing overheating of the housing even when the blower is not driven.

The front side perspective view of the combustion equipment concerning the embodiment of the present invention. The back side perspective view of the combustion equipment concerning the embodiment of the present invention. The front side perspective view which notched some front panels of the combustion equipment which concerns on embodiment of this invention. AA sectional drawing of FIG. The perspective view of the periphery of the low temperature part of the combustion apparatus of FIG. It is a combustion apparatus which concerns on the 1st modification of embodiment of this invention, Comprising: The general | schematic fragmentary longitudinal cross-section corresponding to FIG. The schematic cross-sectional view of the combustion equipment which concerns on the 2nd modification of embodiment of this invention.

The combustion device of the present invention is a combustion device in which fuel such as gas or kerosene is combusted and the blower is driven by an electromotive force generated using the combustion heat. Hereinafter, a preferred embodiment of the present invention is described. A fan heater will be taken as an example and will be described in detail with reference to the drawings.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.
Further, in the following drawings, the portions denoted by the same reference numerals have the same configuration unless otherwise specified.

1 to 3 show a combustion apparatus (fan heater) 10 according to a preferred embodiment of the present invention. FIG. 1 is a front perspective view thereof, FIG. 2 is a rear perspective view thereof, and FIG. It is the front side perspective view which notched the part.
The combustion device 10 shown in these drawings is sized to be portable, and can be used even in a place where there is no external power source.
The combustion device 10 includes a housing 12, a fuel supply unit 20, a combustion chamber 30, thermoelectric conversion means 40, and a blower 50.

[About the housing]
The housing 12 is formed, for example, by applying heat-resistant coating to steel, and has a rectangular shape as a whole. A handle is provided on the side surface 12B so that it can be easily carried.
As shown in FIG. 3, a fuel supply unit 20 and a combustion chamber 30 are arranged in the housing 12, and a blower 50 is attached to the back surface 12C as shown in FIG.

A blowout port 18 is formed on the front surface 12A of the housing 12 shown in FIG. 1 so that the heat in the housing 12 is blown out to the outside as hot air by blowing air from the blower 50. A plurality of louvers 19 for adjusting the direction are provided. A viewing window 16 is formed on the front surface 12A so that the flame of the combustion chamber 30 can be seen.
The side surface 12B and the back surface 12C of the housing 12 have doors 27 that can be freely opened and closed, and the gas cylinders 22 can be taken in and out by opening the doors 27. The take-out port (portion covered by the door 27) is a through hole that is continuously opened on the back surface 12C and the side surface 12B of the housing 12, so that the gas cylinder 22 can be used even if the combustion device 10 is small. Can be easily put in and out.

[About the fuel supply unit]
The fuel supply unit 20 is a part for supplying fuel to the combustion chamber 30.
Gas, kerosene, or the like can be used as the fuel used in the combustion device of the present invention, but the fuel in the present embodiment is a gas, and further, for supplying fuel as shown in FIG. The fuel source is a cartridge-type gas cylinder 22 in which compressed liquefied gas is accommodated so as to be detachable from the fuel supply unit 20.
Specifically, as shown in FIG. 3, the fuel supply unit 20 is provided with a placement unit 24 for accommodating and placing the gas cylinder 22. The placement portion 24 is disposed next to the base portion 13 below the combustion chamber 30. Preferably, the mounting portion 24 is a metal material with good thermal conductivity, and is curved so as to be in close contact with the peripheral side surface of the gas cylinder 22.

  The fuel supply unit 20 includes a cylinder connecting portion 23, and the gas cylinder 22 accommodated in the cylinder connecting portion 23 is detachable. The fuel gas discharged from the gas cylinder 22 enters a governor provided in the cylinder connection portion 23 so that the pressure is adjusted. In addition, when the gas cylinder 22 is heated and the internal pressure rises abnormally, the cylinder connection part 23 and the gas cylinder 22 are attached and detached with a magnet so that the safety mechanism is activated and removed. This cylinder connecting part 23 is connected to the operation knob 28 so that the amount of gas supplied from the gas cylinder 22 can be adjusted. The fuel gas supplied from the gas cylinder 22 through the cylinder connection portion 23 in this way passes through a gas conduit 29 and a gas / air mixer (not shown) and is mixed with air to a gas burner 32 described later. Supplied.

[About the combustion chamber]
The combustion chamber 30 has a space S1 in which fuel gas burns, and a gas burner 32 and an electrode 34 are disposed in the space S1. The fuel gas supplied from the fuel supply unit 20 is sent to the gas burner 32, and an igniter (not shown) is pushed by the rotation of the operation knob 28 to generate a pulse voltage, and the electrode 34 is discharged by the pulse voltage. By doing so, the fuel gas is ignited.
The gas burner 32 has a long rod shape in the width direction of the space S1 (the Y direction in FIG. 3). By arranging a plurality of flame openings 32a in the longitudinal direction, the gas burner 32 emits a flame uniformly in the width direction Y of the space S1. I am doing so.
Further, a part or the whole of the front wall 30b of the combustion chamber 30 is made of heat-resistant glass so that the inside can be visually recognized from the observation window 16 of FIG.

[About the blower]
The blower 50 shown in FIG. 2 mainly includes a “warm air blowing function” for blowing hot air from the blowout port 18 of FIGS. 1 and 3, and a “warm air blowing function” for cooling the thermoelectric conversion means 40 (see FIG. 4). It is a ventilation means having a “cooling function”. The cooling function will be described later.
A fan or a blower can be used for the blower 50. The blower 50 shown in FIG. 2 is preferably an axial fan having a propeller 51 (see FIG. 4) that blows air in the axial flow direction X by driving a motor 52. In addition, the air blower 50 of this invention is not restricted to an axial fan, A centrifugal fan etc. can also be used.
The blower 50 is driven by the thermoelectromotive force generated by the thermoelectric conversion means 40 of FIG. 3 without using an external power source.

[About thermoelectric conversion means]
The thermoelectric conversion means 40 generates thermoelectromotive force using the Seebeck effect, and is also called a thermoelectric conversion module, a thermoelectric generator, or the like.
The thermoelectric conversion means 40 is demonstrated using FIG. 4 which is AA sectional drawing of FIG. FIG. 4 shows a state where the fuel is burning.
As shown in FIG. 4, the thermoelectric conversion means 40 includes a high temperature part 42, a low temperature part 44, and a thermoelectric element 46 sandwiched between the high temperature part 42 and the low temperature part 44.

The high temperature part 42 is a part heated by the combustion heat of the gas burner 32. On the other hand, the space S2 in which the low temperature part 44 is disposed communicates with the external space via the air intake port 11 on the back surface 12C of the housing 12, and the low temperature part 44 is heated by contact with the taken-in outside air. It is hard to be done. Note that both the high temperature portion 42 and the low temperature portion 44 can use a known metal material.
In this way, a temperature difference is generated between the high temperature portion 42 and the low temperature portion 44, and a thermoelectromotive force is generated in the thermoelectric element 46 made of a semiconductor therebetween. The thermoelectric element 46 shown in the figure generates a thermoelectromotive force that starts the blower 50 when the temperature difference between the high temperature portion 42 and the low temperature portion 44 is 150 ° C.
If the gas continues to burn, the temperature of the low temperature portion 44 is likely to rise due to the heat of combustion, but once the blower 50 is activated, the low temperature portion 44 is cooled by the wind, and thus the high temperature portion 42 and The temperature difference from the low temperature part 44 is easily maintained.

In this way, the thermoelectric conversion means 40 generates electric power. During the electric power generation, as shown in FIGS. 1 and 3, the thermoelectric conversion means 40 has an informing means 59 for notifying that electric power is being generated. In the case of the figure, the notification means 59 is a lamp (preferably an LED lamp) electrically connected to the thermoelectric element 46 of FIG. 4 via wiring (not shown), and receives the electromotive force generated by the thermoelectric element 46. By lighting up, the user is informed of the power generation state.
The combustion device 10 of the present embodiment has the above characteristics, and further has the following characteristics.

[Relationship between combustion chamber and high-temperature part]
In the case of this embodiment, the following various ideas are made so that the high temperature part 42 is heated early and the starting time of the air blower 50 can be shortened.
First, as shown in FIG.3 and FIG.4, the high temperature part 42 is arrange | positioned in the combustion chamber 30 (exposed to space S1). Specifically, the high temperature part 42 protrudes from the inner surface 30 a on the back side of the combustion chamber 30 toward the front side. In addition, the high temperature part 42 is the state which arranged the several fin 42a in the width direction Y of space S1, as shown in FIG.
In addition, as shown in FIG. 4, in the state where the supply amount of the fuel gas to the gas burner 32 is maximized and the flame FR is maximized, the main surface portion (front portion) of the high temperature portion 42 has its flame FR (preferably, It is arranged so as to face the front end FR1) of the flame FR.
Further, the gas burner 32 is disposed at a predetermined distance X1 from the high temperature portion 42 so that the flame FR is adjacent to the high temperature portion 42 while facing the high temperature portion 42 so that the flame FR does not contact the high temperature portion 42. Yes.

[About the heat dissipation port]
As described above, in the present embodiment, the high temperature part 42 is heated quickly to shorten the start-up time of the blower 50, but it still takes a considerable time (for example, about 1 minute) to start the blower 50. is necessary. For this reason, the combustion heat of the gas burner 32 during the time period until the blower 50 is activated may be in a dangerous state in the housing 12.
Therefore, in the present invention, the heat radiation port 15 for releasing the combustion heat until the start of the blower 50 to the outside is formed separately from the blowout port 18.

Specifically, as shown in FIG. 1, the heat radiating port 15 is formed by arranging a plurality of slit-shaped through holes, and at least a thing larger than the through hole passes through the heat radiating port 15 and the housing. The shape does not enter the body 12. In addition, the heat radiation port 15 of the present invention is not limited to the slit-like through hole, and may be, for example, a large number of round or polygonal small holes, or a net shape.
The blowout port 18 preferably blows out hot air from the lower side as much as possible, whereas the heat radiation port 15 preferably discharges heat so that heat does not accumulate in the housing 12. Therefore, the heat radiating port 15 is formed on the upper side of the blowout port 18, more preferably in the top plate portion 12 </ b> D of the housing 12.
Further, as shown in FIG. 4, the combustion chamber 30 has an opening 39 that guides combustion heat into the housing 12, and the heat radiation port 15 needs to be at least above the opening 39. is there.

4 is formed in the upper portion of the combustion chamber 30, and a flow path 55 (the upper plate 32 of the combustion chamber 30 and a predetermined amount from the upper plate 32 for directing the wind AR1 of the blower 50 toward the outlet 18). Adjacent to the lower side of the terminal end portion 55a of the space defined by the plate member 36 on the upper side with a space therebetween.
And the opening part 39 is opened so that it may face both the blower outlet 18 side and the heat radiating port 15 side. Thereby, when the blower 50 is not driven, the combustion heat emitted from the opening 39 flows toward the heat radiation port 15, while when the blower 50 is driven, the combustion heat emitted from the opening 15. Hits the wind AR1 and is blown out from the outlet 18 with such momentum.

Here, the housing 12 has a turning portion 65 between the opening 39 and the heat radiation port 15 for switching the flow of combustion heat before and after the blower 50 is driven.
The turning portion 65 of the present embodiment secures a combustion heat flow path 57 toward the heat radiation port 15 on the imaginary line KL connecting the opening 39 and the heat radiation port 15 and above the blowout port 18. On the other hand, it is formed by disposing a resistance portion 60 that suppresses the flow of combustion heat toward the heat radiation port 15. The resistance unit 60 prevents the combustion heat from coming out of the heat radiating port 15 when the blower 50 is driven, and applies the wind AR1 of the blower 50 toward the blowout port 18 to the suppressed combustion heat to cause combustion. Heat is directed in the direction of the outlet 18.
Thus, before the blower 50 is driven, the opening 39 and the heat radiating port 15 are spatially connected via the flow path 57, so that the combustion heat can flow to the heat radiating port 15 and the blower. After driving 50, the vector can be changed in the direction of the blowout port by the wind AR1 of the blower 50 while suppressing the flow of the combustion heat toward the heat radiation port by the resistance of the resistance unit 60.
4 has a plate shape, the present invention is not limited to this, and may be a block shape, for example. Further, the number of the resistance portions 60 is not limited to one as shown in the figure, and may be two or more resistance portions 60.

The resistance portion 60 in FIG. 4 is located above the end portion 55a of the flow path 55 of the wind AR1 (flow path for guiding the wind AR1 to the blowout port 18), whereby the wind AR1 after the blower 50 is driven. Is prevented from blowing out from the heat radiation port 15.
Further, the resistance portion 60 in the case of FIG. 4 is formed of a member different from the member constituting the flow path 55 and is formed closer to the outlet 18 than the terminal end portion 55a of the flow path 55. Is not limited to this. For example, the upper plate member 36 constituting the flow path 55 extends to the outlet 18 side so as to hide part or all of the opening 39 in a plan view, as shown by a one-dot chain line in FIG. You may make it the extended part 36-1 exhibit the function of the resistance part 60. FIG.
As shown in FIG. 4, it is preferable that the resistance portion 60 covers the opening 39 so as to completely hide the opening 39 in a plan view, whereby at least the combustion heat goes straight to the heat radiation port 15. It does not flow, and even if dust enters from the heat radiation port 15, it can be prevented that the dust falls into the combustion chamber 30.

[Relationship between thermoelectric conversion means and blower]
As shown in FIG. 4, the main surface portion of the low temperature portion 44 of the thermoelectric conversion means 40 and the blower 50 face each other, whereby the low temperature portion 44 receives the wind of the blower 50 from the front without being obstructed by other members. It is configured.
Specifically, as shown in FIG. 5, which is a perspective view around the low temperature portion 44, the low temperature portion 44 is formed by arranging a plurality of fins 44 a in the lateral width direction Y of the housing 12. A space S3 along the vertical direction Z is formed between the fins 44a.
Thereby, the wind of the blower 50 hits the low temperature part 44 composed of a plurality of fins 44a and can efficiently cool the low temperature part 44, and the wind hitting the low temperature part 44 is above and below the low temperature part 44 in the housing 12. Smoothly flows in direction Z. And the wind AR1 which flowed to the upper side passes through the flow path 55 shown in FIG.

On the other hand, the wind AR2 flowing below the low temperature portion 44 in FIG. 5 is formed on the side wall surface of the rear surface 12C of the combustion chamber 30 in the combustion chamber 30 in a negative pressure state as shown in FIG. Then, the air is sucked through the air inlet 37 formed of the through hole and hits the high temperature portion 42 to cool the high temperature portion 42. The reason for cooling the high temperature portion 42 in this way is to prevent a failure due to overheating exceeding the heat resistance temperature of the thermoelectric element 46 (in the case of the present embodiment, 250 ° C.). That is, in the case of the present embodiment, the high temperature portion 42 only needs to have a temperature that can maintain the drive of the blower 50 and the lighting of the notification means 59 (for example, 220 ° C.), so that the heat resistance temperature of the thermoelectric element 46 is not exceeded. After the blower 50 is driven, the high temperature part 42 is cooled.
As shown in FIG. 3, the air inlet 37 has a width dimension Y1 that is the same as or larger than the dimension in the lateral width direction Y of the high-temperature portion 42, but the height dimension H1 is made small, and the opening The area is at least smaller than the cross-sectional area of the flow path 55 of the wind AR1 in FIG.
Further, the air inlet 37 of the present embodiment is disposed below the high temperature part 42. Therefore, even if the wind AR2 sucked through the air inlet 37 rises in the combustion chamber 30, the wind AR2 can be applied to the high temperature part. Moreover, as shown in FIG. 3, since the plurality of fins 42a are arranged in the horizontal width direction Y of the space S1, the wind AR2 passes through the high temperature portion 42 so as to pass between the plurality of fins 42a. Thus, the high temperature part 42 can be cooled.
Further, in the present embodiment, the air introduction port 37 and the propeller 51 of the blower 50 face each other, and the wind AR3 of the blower 50 is sent directly into the combustion chamber 30 from the air introduction port 37.

[Cooling the low temperature part]
As described above, the low temperature section 44 is air-cooled by the blower 50, and the low temperature section 44 and the gas cylinder 22 are further connected via the heat conducting member 58 to cool the low temperature section 44. That is,
Since the gas cylinder 22 is a metal container in which liquefied gas is accommodated, the gas cylinder 22 has a characteristic that the gas cylinder 22 is gradually cooled as the gas is ejected, and the cold heat is effectively sent to the low temperature portion 44 for cooling.
In the case of this embodiment, as shown in FIGS. 4 and 5, one end 58a of the heat conducting member 58 is connected to the side surface of the fin 44a, and the other end 58b is the mounting portion 24 of the gas cylinder 22 described above. It is connected to the.
In addition, although the metal material with favorable heat conductivity, such as copper and silver, can be used suitably for the heat conductive member 58, this invention is not limited to this.

The combustion device 10 according to the embodiment of the present invention is configured as described above. Since the blower 50 can be driven by the thermoelectromotive force of the thermoelectric conversion means 40, the combustion device 10 can be used only with the fuel in the gas cylinder 22. In addition, even when the thermoelectric conversion means 40 starts the blower 50 or when the thermoelectric conversion means 40 breaks down, for example, the combustion heat is released from the heat radiation port 15 to prevent the casing 12 from overheating. it can.
By the way, the combustion apparatus of the present invention is not limited to the above-described embodiment, and the individual configurations of the above-described embodiments may be omitted as necessary or may be combined with other configurations not described.
For example, the combustion devices 71 and 72 according to the first and second modifications shown in FIGS. 6 and 7 may be employed.
This modification will be described below.

[First Modification]
FIG. 6 is a combustion apparatus 71 according to a first modification of the embodiment of the present invention, and is a schematic partial longitudinal sectional view corresponding to FIG.
The combustion device 71 in this figure is different from the combustion device 10 in FIGS. 1 to 5 in the cooling means of the high temperature section 42.
That is, the air introduction port 79 for air-cooling the high temperature portion 42 exposed to the space S1 of the combustion chamber 30 connects the space S1 in the combustion chamber 30 and the space S2 in which the blower 50 is disposed, so that the combustion is performed. It is formed by a flow path 82 that passes under the wall surface 30 c on the back side of the chamber 30.
Specifically, a through hole 81 is formed in the combustion chamber 30 side of the pedestal 13, and a through hole 83 is formed in the blower 50 side of the pedestal 13. The two through holes 81 and 83 are spatially connected to each other via a flow path 82 to form an air introduction port 79. Preferably, the through hole 81 on the combustion chamber 30 side is formed in the high temperature portion 42. It is arranged just below. More preferably, the opening area of the through hole 81 is smaller than that of the through hole 83.
Accordingly, in the combustion device 71, there is no wind AR3 (see FIG. 4) that directly enters the combustion chamber 30 from the blower 50, but the wind AR2 and the like that flows downward after hitting the low temperature portion 44 has a negative pressure in the combustion chamber 30. The high temperature part 42 can be vigorously hit from the bottom and the high temperature part 42 can be cooled.

[Second Modification]
FIG. 7 is a combustion apparatus 72 according to a second modification of the embodiment of the present invention, and is a schematic cross-sectional view when a portion of the thermoelectric conversion means 40 is cut in the horizontal direction.
The combustion device 72 shown in this figure is different from the combustion device 10 shown in FIGS.
That is, in the case of FIG. 7, the air introduction port 88 for air-cooling the high temperature portion 42 is formed in the lateral width direction Y of the combustion chamber 30. Specifically, the air introduction port 88 is a through hole formed in the wall surface in the lateral width direction Y of the combustion chamber 30 and is disposed adjacent to both end portions 42 b and 42 c in the lateral width direction Y of the high temperature portion 42. Is preferred.
7 is also composed of a plurality of fins 42a as shown in FIG. 3. However, the plurality of fins 42a are arranged in the vertical direction Z, and the plurality of fins 42a are arranged between the fins 42a. It is preferable to introduce the wind that has passed through the air inlet 88.

DESCRIPTION OF SYMBOLS 12 ... Housing | casing, 15 ... Radiating port, 18 ... Outlet, 30 ... Combustion chamber, 32 ... Burner (gas burner), 37 ... Air inlet, 39 ... Opening part, 40 ... thermoelectric conversion means, 42 ... high temperature part, 44 ... low temperature part, 46 ... thermoelectric element, 50 ... blower, 60 ... resistance part, 65 ... variable Mukobe

Claims (7)

A thermoelectric force is generated by a combustion chamber having a burner in a housing and a thermoelectric element formed between a high temperature portion and a low temperature portion using the combustion heat of the burner, and made of a semiconductor that exhibits the Seebeck effect. And a thermoelectric conversion means for driving the axial fan by the thermoelectromotive force to discharge the combustion heat from a blowout port formed in the housing,
The casing has a heat radiating port for releasing the combustion heat generated from the combustion chamber to the outside above the blowing port, and directs the wind of the axial fan toward the blowing port side on the inside. A flow path for
The combustion chamber has an opening for guiding the combustion heat into the housing below the heat radiating port,
Between the opening and the heat radiating port and closer to the outlet than the flow path, the combustion heat is prevented from coming out of the heat radiating port when the axial fan is driven, and the suppressed combustion A turning portion is provided for directing heat in the direction of the outlet by the wind from the axial fan ;
The combustion apparatus , wherein the flame of the burner, the high temperature part, the thermoelectric element, the low temperature part, and the axial fan are arranged in a line in the horizontal direction in that order . The combustion apparatus according to claim 1 , wherein the blowout port is disposed so that the opening of the combustion chamber faces. The high temperature portion is disposed in the combustion chamber;
The combustion apparatus according to claim 1 or 2 , wherein an air inlet for cooling the high temperature part is formed in the combustion chamber. The combustion apparatus according to claim 3 , wherein the air introduction port and the axial fan are arranged so as to face each other. The combustion apparatus according to any one of claims 1 to 4 , wherein a fuel source of the burner is a cartridge type gas cylinder in which a compressed liquefied gas is accommodated. The combustion device according to claim 5 , wherein the low temperature part and the cartridge type gas cylinder are connected via a heat conducting member. The combustion apparatus according to any one of claims 1 to 6 , further comprising notification means for notifying that the thermoelectric conversion means is generating electricity.

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