JP6833484B2 - Vortex combustor and portable power generator using it - Google Patents

Description

The present invention relates to a vortex combustor and a portable power generator.

Conventionally, a tubular combustion chamber is provided, and fuel gas and air or a premixture thereof is introduced toward the tangential direction of the inner surface of the combustion chamber to generate a swirling flow, and combustion is performed by igniting this swirling flow. A vortex combustor that forms a vortex-shaped flame in a room is known (for example, Patent Document 1). In this vortex combustor, a stable flame is formed in the combustion chamber by a high-speed swirling flow, so that the temperature variation of the combustion flame is small and it is difficult to form a local high temperature region, so that the generation of NOx can be suppressed. It will be possible. In addition, since the vortex flame exists only in the combustion chamber, the combustor can be miniaturized.

Further, in recent years, as a portable power source that can be used outdoors or in the event of a disaster, a power generation device using a thermoelectric power generation module that converts thermal energy into electrical energy has been proposed (for example). Patent Document 2). This thermoelectric power generation module generates an electromotive force due to the temperature difference between the low temperature part and the high temperature part, and the larger the temperature difference, the larger the electromotive force can be obtained. Therefore, a heating source for heating the high temperature part is required. Is. In Patent Document 2, a catalytic combustor is used as the heating source, but it is considered that by using a vortex combustor as the heating source, it is possible to construct a power generation device having high power generation efficiency in a compact size.

Japanese Unexamined Patent Publication No. 2004-93118 Japanese Unexamined Patent Publication No. 2009-27876

By the way, the eddy current combustor can perform stable combustion by generating a high-speed swirling flow in the combustion chamber, and if the swirling flow is disturbed, the combustion state deteriorates or misfire occurs. Therefore, it is desirable that the portion forming the flame in the combustion chamber is configured so as not to dispose a substance that disturbs the swirling flow as much as possible. For example, in Patent Document 1, the ignition device is more than the nozzle into which the fuel gas is introduced. It is provided on the rear end side of the combustion chamber.

With such a configuration, the ignition device does not cause turbulence in the swirling flow, but a space for arranging the ignition device is required on the rear end side of the combustion chamber. Then, in order to perform good ignition, a sufficient distance is required between the nozzle for introducing the fuel gas and the nozzle for mixing the fuel gas and air to generate a premixed gas. It becomes difficult to configure the small size.

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a vortex combustor which is small in size and has excellent ignitability, and a portable power generation device using the vortex combustor.

The present invention includes a tubular combustion chamber and a combustion gas introduction portion for introducing combustion gas toward the tangential direction of the inner surface of the combustion chamber inside the combustor main body, and vortex flows in the combustion chamber. A vortex combustor that forms a flame, and an igniter that ignites the combustion gas is located downstream of the tip of the vortex flame .
The combustor body includes an opening at which the downstream end of the combustion chamber opens, and the ignition device is inserted into the combustion chamber through the opening.
The combustor main body is a vortex combustor characterized in that the combustion exhaust gas flow path through which the combustion exhaust gas generated in the combustion chamber flows is further provided, and the opening is closed by the ignition device.

Further, the ignition device includes a discharge electrode for performing spark discharge, the discharge electrode is arranged so that the central axis overlaps the axis of the combustion chamber, and the tip thereof is inclined toward the inner surface of the combustion chamber. The vortex combustor according to claim 1 , wherein the vortex combustor is characterized in that.

Further, the vortex combustor according to claim 1 or 2 , a fuel supply unit for supplying fuel gas to the vortex combustor, a combustion air supply unit for supplying combustion air to the vortex combustor, and the vortex flow. It is a portable power generation device including a thermoelectric power generation module in which a high temperature side is heated by a combustor and a cooling unit for cooling the low temperature side of the thermoelectric power generation module.

Further, the vortex combustor according to claim 1 or 2 , a fuel supply unit for supplying fuel gas to the vortex combustor, a combustion air supply unit for supplying combustion air to the vortex combustor, and the vortex flow. A thermoelectric power generation module in which a high temperature side is heated by a combustor and a cooling unit for cooling the low temperature side of the thermoelectric power generation module are provided, and the thermoelectric power generation module is attached to an outer peripheral surface of the combustor body. It is a portable power generation device.

With the above-described configuration, it is possible to provide a vortex combustor that is compact and has excellent ignitability, and a portable power generation device using the vortex combustor.

It is sectional drawing which shows an example of the vortex combustor in embodiment of this invention. It is a block diagram which shows another example of the vortex combustor in embodiment of this invention. (A) is a sectional view showing still another example of the vortex combustor according to the embodiment of the present invention, and (b) is a sectional view taken along the line AA'of the vortex combustor shown in (a). It is a block diagram which shows an example of the power generation apparatus in embodiment of this invention. It is a partial cross-sectional view which shows an example of the power generation apparatus in embodiment of this invention. It is a partial cross-sectional view which shows an example of the power generation apparatus in embodiment of this invention. It is a schematic block diagram.

Embodiments of the present invention considered to be suitable will be briefly described by showing the effects of the present invention.

The present invention is a vortex combustor that forms a vortex-shaped flame in the combustion chamber, and an ignition device is arranged downstream of the tip of the vortex flame. That is, since the ignition device is placed in the combustion exhaust gas after the combustion is completed and the vortex flame is extinguished, the swirling flow of the combustion gas is not disturbed, so that stable combustion can be continued, and the conventional combustion device can be continued. Since it is not necessary to provide a space for arranging the ignition device as described above, the combustion chamber can be made compact. Further, since the combustion gas introduced into the combustion chamber is sufficiently mixed by swirling in the combustion chamber before reaching the ignition device, the ignitability is also excellent.

In addition, the vortex combustor has a structure in which a combustion chamber and a combustion gas introduction portion are formed inside the combustor body, in addition to the effects of downsizing the combustion chamber and improving ignitability, as well as the vortex flame. Since heat is quickly transferred to the combustor body via the combustion chamber, the vortex combustor can be effectively used as a heat source. Furthermore, since the combustion gas is heated by heat exchange with the combustor body while passing through the combustion gas introduction part and the temperature rises, the combustion reaction time is shortened, which promotes the combustion reaction and causes incomplete combustion. It will be reduced.

Further, by opening the downstream end of the combustion chamber into the combustor body and inserting the ignition device through this opening, the ignition device can be easily installed inside the combustion chamber, and at a position where the vortex flame is extinguished. It can be reliably placed.

Further, by providing the fuel exhaust gas flow path through which the combustion exhaust gas flows in the combustor main body, the combustor main body is also heated by the heat from the combustion exhaust gas, so that the vortex combustor can be effectively used as a heat source. At that time, since the opening of the combustion chamber is closed by the ignition device, the combustion exhaust gas surely flows into the combustion exhaust gas flow path without leaking from the opening, and the ignition device can be easily positioned.

Further, the ignition device can reliably ignite by inclining the tip of the discharge electrode toward the inner surface of the combustion chamber to discharge the combustion gas toward the direction where the combustion gas is surely present. Furthermore, by arranging the central axis of the discharge electrode so as to overlap the axis of the combustion chamber, the distance between the surface of the combustion chamber and the tip of the discharge electrode is constant regardless of the mounting direction of the ignition device, and stable ignition is possible. It becomes.

Further, in a power generation device equipped with a thermoelectric power generation module, by using the above-mentioned vortex combustor as a heat source for heating the thermoelectric power generation module, it is possible to configure a power generation device capable of generating power in a compact and stable manner. it can.

Further, by attaching the thermoelectric power generation module to the outer peripheral surface of the combustor main body, the heat generated by the vortex combustor can be efficiently transferred to the thermoelectric power generation module, and a power generation device having high power generation efficiency can be configured.

Hereinafter, specific examples of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of a vortex combustor according to an embodiment of the present invention.

The vortex combustor 1 of the present embodiment is used for combustion in which a cylindrical combustion chamber 11 and a premixed gas (combustion gas) of fuel gas and combustion air are introduced toward the tangential direction of the inner surface of the combustion chamber 11. It includes a premixed gas introduction path 12 which is a gas introduction unit, and an ignition device 20 for igniting the premixed gas. The ignition device 20 is arranged so as to penetrate the wall surface of the combustion chamber 11 so that the tip of the ignition device 20 faces the inside of the combustion chamber 11. As the ignition device 20, various types of ignition devices such as a spark plug that discharges sparks and an ignition heater that ignites by the heat of the heater can be used.

A vortex flame F is formed in the combustion chamber 11. The vortex flame F completely burns in the combustion chamber 11, and disappears when the combustion is completed. In FIG. 1, the tip position of the vortex flame F is indicated by a chain line, and the ignition device 20 is arranged downstream of the tip position of the vortex flame F in the combustion chamber 11.

In the above configuration, by introducing the premixed gas from the premixed gas introduction path 12 toward the tangential direction in the combustion chamber 11, a high-speed swirling flow is generated in the combustion chamber 11. The swirling flow of the premixed gas travels toward the downstream of the combustion chamber 11, and when ignited by the ignition device 20, a vortex flame F is formed in the combustion chamber 11. Here, since the ignition device 20 is arranged downstream of the combustion chamber 11 from the tip position of the vortex flame F, the swirling flow of the premixed gas is not disturbed, so that stable combustion can be continued. Further, since the flame has already been extinguished around the ignition device 20 and is not exposed to the flame, deterioration of the ignition device 20 and generation of soot can be suppressed. Further, the premixed gas introduced into the combustion chamber 11 is mixed by swirling in the combustion chamber 11 before reaching the ignition device 20, and the igniter 20 mixes the well-mixed premixed gas. Since it ignites gas, it has excellent ignitability.

Next, another embodiment of the vortex combustor of the present invention will be described with reference to FIG.

FIG. 2 is a schematic configuration diagram showing another example of the vortex combustor according to the present embodiment. The vortex combustor 1 includes a substantially rectangular parallelepiped combustor main body 10 and an ignition device attached to the combustor main body 10. It has 20.

The combustion gas main body 10 introduces a combustion gas into which a tubular combustion chamber 11 and a premixed gas (combustion gas) of fuel gas and combustion air are introduced toward the tangential direction of the inner surface of the combustion chamber 11. It is provided with a premixed gas introduction path 12 which is a part. An opening 13 is formed on the surface of the combustor main body 10 through which the downstream end of the combustion chamber 11 opens, and the ignition device 20 is inserted into the combustion chamber 11 through the opening 13 to form a combustor. It is attached to the main body 10.

Since the combustion chamber 11 is formed inside the combustor main body 10, it can be easily attached to the inside of the combustion chamber 11 by inserting the ignition device 20 from the opening 13 at the downstream end of the combustion chamber 11. In addition, it can be reliably placed at a position where the vortex flame F has disappeared.

The ignition device 20 includes a discharge electrode 21 that discharges sparks and a porcelain portion 22 that surrounds the discharge electrode 21, and the tip of the discharge electrode 21 is inclined toward the inner surface of the combustion chamber 11. ..

A vortex flame F is formed in the combustion chamber 11. The vortex flame F completely burns in the combustion chamber 11, and disappears when the combustion is completed. In FIG. 2, the tip position of the vortex flame F is indicated by a chain line, and the ignition device 20 is arranged downstream of the tip position of the vortex flame F in the combustion chamber 11.

In the above configuration, by introducing the premixed gas from the premixed gas introduction path 12 toward the tangential direction in the combustion chamber 11, a high-speed swirling flow is generated in the combustion chamber 11. The swirling flow of the premixed gas travels toward the opening 13 of the combustion chamber 11, and when ignited by the discharge of the ignition device 20, a vortex flame F is formed in the combustion chamber 11. Since the ignition device 20 is arranged downstream of the combustion chamber 11 from the tip position of the vortex flame F, it does not disturb the swirling flow of the premixed gas, so that stable combustion can be continued. Further, since the flame has already been extinguished around the ignition device 20 and is not exposed to the flame, deterioration of the ignition device 20 and generation of soot can be suppressed. Further, the premixed gas introduced into the combustion chamber 11 is mixed by swirling in the combustion chamber 11 before reaching the ignition device 20, and the igniter 20 mixes the well-mixed premixed gas. Since it ignites gas, it has excellent ignitability.

Further, since the premixed gas in the combustion chamber 11 exists as a swirling flow along the inner surface of the combustion chamber 11, the tip of the discharge electrode 21 of the ignition device 20 is inclined toward the inner surface of the combustion chamber 11. As a result, the premixed gas can be discharged toward the direction in which the premixed gas is surely present, and can be reliably ignited.

When the flame is formed in the combustion chamber 11 in this way, the combustor main body 10 is heated by the heat of the vortex flame F and the heat of the combustion exhaust gas generated by the combustion of the vortex flame F. When the combustor main body 10 is heated, the premixed gas is heated by heat conduction from the combustor main body 10 while passing through the premixed gas introduction path 12, and the temperature rises. As the temperature of the premixed gas rises, the combustion rate increases, and this improvement in combustion rate shortens the combustion reaction time and promotes the combustion reaction, thus reducing incomplete combustion and maintaining a good combustion state. can do.

Further, since the heat generated by the combustion efficiently heats the combustor main body 10, the vortex combustor 1 can be used as a heat source.

Next, another embodiment of the vortex combustor 1 of the present invention will be described with reference to FIG. The same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 3A is a cross-sectional configuration diagram showing an example of a vortex combustor, and a configuration that does not appear in the cross section is shown by a broken line. Further, FIG. 3B is a cross-sectional view taken along the line AA'of the vortex combustor shown in FIG. 3A. The black arrow in the figure indicates the premixed gas, and the white arrow indicates the combustion exhaust gas.

In addition to the configuration of the second embodiment, the vortex combustor 1 of the present embodiment includes a combustion exhaust gas flow path 14 through which the combustion exhaust gas discharged from the combustion chamber 11 flows inside the combustor main body 10. Further, on the surface of the combustor main body 10, a combustion exhaust gas outlet 15 is provided which communicates with the downstream end of the combustion exhaust gas flow path 14 and discharges the combustion exhaust gas to the outside of the combustor main body 10.

The ignition device 20 includes a discharge electrode 21 that performs spark discharge and a porcelain portion 22 that surrounds the discharge electrode 21, and is arranged so that the central axis of the discharge electrode 21 overlaps with the axis L of the combustion chamber 11. Its tip is inclined toward the inner surface of the combustion chamber 11.

Further, the ignition device 20 is inserted and attached to the inside of the combustion chamber 11 from the opening 13 of the combustion chamber 11, and the opening 13 is closed by the insulator portion 22. Therefore, the combustion exhaust gas generated by combustion flows into the combustion exhaust gas flow path 14 from the combustion chamber 11.

A vortex flame F is formed in the combustion chamber 11. The vortex flame F completely burns in the combustion chamber 11, and disappears when the combustion is completed. In FIG. 3, the tip position of the vortex flame F is indicated by a chain line, and the ignition device 20 is arranged downstream of the tip position of the vortex flame F in the combustion chamber 11.

In the above configuration, by introducing the premixed gas from the premixed gas introduction path 12 toward the tangential direction in the combustion chamber 11, a high-speed swirling flow is generated in the combustion chamber 11. The swirling flow of the premixed gas travels toward the opening 13 of the combustion chamber 11, and when ignited by the discharge of the ignition device 20, a vortex flame F is formed in the combustion chamber 11. Since the ignition device 20 is arranged downstream of the combustion chamber 11 from the tip position of the vortex flame F, it does not disturb the swirling flow of the premixed gas, so that stable combustion can be continued. Further, since the flame has already been extinguished around the ignition device 20 and is not exposed to the flame, deterioration of the ignition device 20 and generation of soot can be suppressed. Further, the premixed gas introduced into the combustion chamber 11 is mixed by swirling in the combustion chamber 11 before reaching the ignition device 20, and the igniter 20 mixes the well-mixed premixed gas. Since it ignites gas, it has excellent ignitability.

Further, the premixed gas in the combustion chamber 11 exists as a swirling flow along the inner surface of the combustion chamber 11. By inclining the tip of the discharge electrode 21 of the ignition device 20 toward the inner surface of the combustion chamber 11, the premixed gas can be discharged toward the direction where it is surely present, and ignition can be surely performed. Further, since the central axis of the discharge electrode 21 coincides with the axis L of the combustion chamber, the distance between the inner surface of the combustion chamber 11 and the tip of the discharge electrode 21 is constant and stable regardless of the mounting direction of the ignition device 20. Ignition is possible.

When a flame is formed in the combustion chamber 11 in this way, high-temperature combustion exhaust gas is generated. This combustion exhaust gas folds back at the downstream end of the combustion chamber 11 and flows into the combustion exhaust gas flow path 14. The combustion exhaust gas flow path 14 extends in the combustor main body 10 in the longitudinal direction in parallel with the combustion chamber 11, and the combustion exhaust gas exchanges heat with the combustor main body 10 while passing through the combustion exhaust gas flow path 14. Heats the combustor body 10 by The combustor body 10 is also heated by the vortex flame F formed in the combustion chamber 11.

Since the combustor main body 10 is heated by the vortex flame F and the combustion exhaust gas in this way, heat loss due to heat dissipation is suppressed, and the combustor main body 10 can be kept at a high temperature.

The power generation device of the present invention will be described with reference to FIGS. 4 to 6. FIG. 4 is a configuration diagram showing an example of a power generation device according to the embodiment of the present invention, and FIGS. 5 and 6 are partial cross-sectional views showing an example of the power generation device according to the embodiment of the present invention.

The power generation device 31 of the present embodiment has a thermoelectric power generation module 33, a vortex combustor 1 provided on the high temperature side of the thermoelectric power generation module 33, and cooling provided on the low temperature side of the thermoelectric power generation module 33 in the outer case 32. The unit 35, the blower 40 that blows air to the cooling unit 35, the fuel supply unit 36 that supplies the fuel gas, the combustion air supply unit 37 that supplies the combustion air, and the fuel gas and the combustion air are mixed and premixed. A premixing unit 38 for generating gas and a battery unit 39 are housed in the premixing unit 38. Further, the outer case 32 is formed with an output unit (not shown) for supplying the electric power generated by the thermoelectric power generation module 33 to the outside.

The thermoelectric power generation module 33 uses a Seebeck element (semiconductor element) that generates a thermoelectromotive force by utilizing the Seebeck effect. Such a Seebeck element is formed by laminating an n-type semiconductor and a p-type semiconductor, and when heated, carrier transfer is performed between boundaries between different semiconductors to generate an electromotive force. At this time, the larger the temperature difference between the high temperature part and the low temperature part, the larger the electromotive force generated. Therefore, the high temperature side is heated by the combustion of the vortex combustor 1, and the low temperature side is cooled by the cooling part 35. Is being generated.

The vortex combustor 1 burns a premixed gas (combustion gas) of the fuel gas supplied from the fuel supply unit 36 and the combustion air supplied from the combustion air supply unit 37, and the high temperature of the thermoelectric power generation module 33. Heat the side. In this embodiment, for example, the vortex combustor shown in FIG. 3 is used.

In order to transfer the heat generated by combustion to the thermoelectric power generation module 33, the combustor main body 10 is made of a metal member having high thermal conductivity (for example, aluminum or aluminum alloy), and the thermoelectric power generation module 33 is the combustor. It is provided in close contact with the outer peripheral surface of the main body 10. The shape of the combustor main body 10 is not limited to the rectangular parallelepiped shape, and may be a cubic shape or a cylindrical shape. Further, in this example, the thermoelectric power generation modules 33 are arranged on the two surfaces having the largest area among the outer peripheral surfaces of the combustor main body 10, but the number and arrangement of the thermoelectric power generation modules 33 are not limited to this. Further, the shape may be any as long as it can be brought into close contact with the combustor main body 10, and is not limited to a flat plate shape.

The cooling unit 35 is provided on the low temperature side of the thermoelectric power generation module 33, and the air taken into the outer case 32 is passed by the rotation of the blower 40 to take heat from the thermoelectric power generation module 33 and cool it. One end side facing the blower 40 is the cooling air inlet 42, and the other end side is the cooling air outlet 43. The cooling unit 35 includes, for example, a plurality of fins 41 erected along the longitudinal direction, and air taken into the cooling unit 35 from the cooling air inlet 42 passes between the plurality of fins 41 to fin the fins. Heat is taken from 41, the thermoelectric generation module 33 is efficiently cooled, and the heat is discharged from the cooling air outlet 43.

A windbreak plate 44 is provided between the cooling air inlets 42 of the two cooling units 35 to prevent the air blown from the blower 40 from flowing into the vortex combustor 1. This prevents the vortex combustor 1 from being cooled.

The fuel supply unit 36 supplies flammable fuel gas to the vortex combustor 1, and a gas cylinder 36a containing a compressed liquefied gas is connected to the fuel supply unit 36. The fuel supply unit 36 may be configured by accommodating the gas cylinder 36a in the outer case 32 as in the present embodiment, or may be connected to the gas cylinder outside the outer case 32.

The combustion air supply unit 37 is composed of, for example, a blower, and supplies combustion air to the vortex combustor 1. Since the vortex combustor 1 has a large internal pressure loss, it is not possible to supply the air required for combustion only by the ejector effect generated when the fuel gas is ejected. Further, in order to generate a high-speed swirling flow in the combustion chamber 11, it is necessary to supply air by the combustion air supply unit 37. Therefore, the power generation device 31 of the present invention is provided with a combustion air supply unit 37 to forcibly supply air to the vortex combustor 1.

The premixing unit 38 mixes the fuel gas supplied from the fuel supply unit 36 with the air supplied from the combustion air supply unit 37 to generate a premixed gas (combustion gas). This premixed gas is introduced into the premixed gas introduction path 12 of the vortex combustor 1.

The battery unit 39 supplies electric power to the combustion air supply unit 37 and the ignition device 20, which require electric power, to drive the thermoelectric power generation module 33 until the thermoelectric power generation module 33 starts power generation. The battery unit 39 may be either a primary battery such as a dry battery or a secondary battery such as a lithium ion battery, but when the thermoelectric power generation module 33 starts power generation by using the secondary battery, the thermoelectric power generation module 33 is used. The power consumed by the output can be charged.

Next, the operation of the power generation device 31 in the above configuration will be described. When the power generation device 31 is instructed to start power generation, it starts supplying fuel gas and combustion air in order to first perform combustion in the vortex combustor 1. In order to supply the combustion air, the combustion air supply unit 37 must be driven, but the thermoelectric power generation module 33 has not started power generation yet. Therefore, the combustion air supply unit 37 is driven by being supplied with electric power from the battery unit 39. On the other hand, since the fuel supply unit 36 supplies fuel by the pressure of the gas cylinder 36a, it is not necessary to supply electric power from the battery unit 39.

When the driving of the combustion air supply unit 37 is started, the fuel gas supplied from the fuel supply unit 36 and the combustion air supplied from the combustion air supply unit 37 are mixed by the premixing unit 38 and pre-mixed. It becomes a mixed gas and flows into the premixed gas introduction path 12 of the vortex combustor 1. This premixed gas is introduced in the tangential direction in the combustion chamber 11 through the premixed gas introduction path 12 to form a high-speed swirling flow, and is ignited by the ignition device 20 to form a vortex flame in the combustion chamber 11. Will be done. The ignition device 20 is driven by the electric power supplied from the battery unit 39.

Here, when the premixed gas is ignited, the amount of air supplied from the combustion air supply unit 37 is controlled so that the premixed gas is in a fuel-rich state with respect to the theoretical air ratio. As a result, the ignition accuracy of the premixed gas is improved, and an ignition error can be prevented.

Further, when the premixed gas is ignited and the start of combustion is detected, the amount of air supplied from the combustion air supply unit 37 is changed so that the premixed gas is in a fuel-diluted state with respect to the theoretical air ratio. As a result, the concentration of carbon monoxide contained in the combustion exhaust gas can be reduced. During combustion, combustion air is supplied so that the concentration of the premixed gas is kept constant, and stable combustion is continued.

In the vortex combustor 1, since the flame exists only in the combustion chamber 11, the combustor main body 10 can be made compact. As a result, the power generation device 31 can be made compact. Further, since the heat of the flame is quickly transferred to the entire combustor main body 10 through the combustion chamber 11 by the high-speed circumferential rotation speed of the vortex flame, the thermoelectric power generation module 33 is heated evenly, so that high power generation is possible. Efficiency can be obtained.

When the heat of the combustor main body 10 is transferred to the thermoelectric power generation module 33 and the high temperature side of the thermoelectric power generation module 33 is heated, an electromotive force is generated due to the temperature difference from the low temperature side and power generation is started. When the output of the thermoelectric power generation module 33 becomes stable and exceeds a predetermined value, the drive source of the combustion air supply unit 37 is switched from the conventional battery unit 39 to the output of the thermoelectric power generation module 33, and from the thermoelectric power generation module 33. The blower 40 is driven by the supplied electric power.

When the blower 40 is driven, air is taken into the outer case 32 and flows into the cooling unit 35 from the cooling air inlet 42. The air flowing into the cooling unit 35 takes heat from the fins 41 by passing between the fins 41, cools the low temperature side of the thermoelectric power generation module 33, and is discharged from the cooling air outlet 43. As a result, the temperature difference between the low temperature side and the high temperature side of the thermoelectric power generation module 33 becomes large, and the output of the thermoelectric power generation module 33 increases. Then, the surplus electric power obtained by subtracting the electric power required for driving the power generation device 31 is supplied to the output unit.

Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications, improvements, and the like can be made without departing from the gist of the present invention.

1 Vortex combustor 10 Combustor body 11 Combustion chamber 12 Premixed gas introduction path (combustion gas introduction part)
13 Opening 14 Combustion exhaust gas flow path 20 Ignition device 21 Discharge electrode 33 Thermoelectric power generation module 35 Cooling unit 36 Fuel supply unit 37 Combustion air supply unit F Vortex flame

Claims (4)

Inside the main body of the combustor, a tubular combustion chamber and a combustion gas introduction unit for introducing combustion gas toward the tangential direction of the inner surface of the combustion chamber are provided, and a vortex flame is formed in the combustion chamber. An igniter that ignites the combustion gas, which is a vortex combustor, is located downstream from the tip of the vortex flame .
The combustor body includes an opening at which the downstream end of the combustion chamber opens, and the ignition device is inserted into the combustion chamber through the opening.
The combustor main body is further provided with a combustion exhaust gas flow path through which combustion exhaust gas generated in the combustion chamber flows, and the opening is closed by the ignition device . The ignition device includes a discharge electrode for performing spark discharge, and the discharge electrode is arranged so that the central axis overlaps the axis of the combustion chamber, and the tip thereof is inclined toward the inner surface of the combustion chamber. vortex combustor of claim 1, wherein. The vortex combustor according to claim 1 or 2 , a fuel supply unit that supplies fuel gas to the vortex combustor, a combustion air supply unit that supplies combustion air to the vortex combustor, and the vortex combustor. A portable power generation device including a thermoelectric power generation module in which a high temperature side is heated by the fuel, and a cooling unit for cooling the low temperature side of the thermoelectric power generation module. The vortex combustor according to claim 1 or 2 , a fuel supply unit that supplies fuel gas to the vortex combustor, a combustion air supply unit that supplies combustion air to the vortex combustor, and the vortex combustor. A thermoelectric power generation module in which the high temperature side is heated by the combustion generator and a cooling unit for cooling the low temperature side of the thermoelectric power generation module are provided, and the thermoelectric power generation module is attached to an outer peripheral surface of the combustor main body. Portable power generator.

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