JP2018009721A - Compact-sized vortex combustor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact-sized vortex combustor superior in safety and practicality by minimizing incomplete combustion and generation of carbon monoxide.SOLUTION: A flame heat insulation portion 5 is disposed on a position surrounding vortex flame formed in a combustion portion 1 so that heat transfer of heat of the vortex flame to a combustor main body portion 2 is suppressed by the flame heat insulation portion 5, and a high temperature state of the vortex flame is kept by suppressing lowering of a flame temperature of the vortex flame formed in the combustion portion 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a small eddy current combustor.

  In recent years, along with the development of microelectronic devices (such as MEMS), miniaturization of these power sources has been an issue, and small combustors using hydrocarbon fuels with high energy density are attracting attention. One of them is a small eddy current combustor.

  This small eddy current combustor is a premixed gas that introduces a premixed gas in a tangential direction to a tubular combustion part and one end of the combustion part in a combustor main body formed of aluminum or the like having high thermal conductivity. An introduction path and a combustion gas heat exchange path for exchanging heat with the high-temperature combustion gas generated by combustion are formed, and combustion is performed by introducing the premixed gas in the tangential direction from the premixed gas introducing path into the combustion section. A high-speed swirling flow is generated in the section to form a vortex flame, and the high-speed circumferential rotational speed of the vortex flame quickly transfers the heat of the flame to the entire combustor body through the combustion section inner wall, and combustion The high-temperature combustion gas generated by the gas exchanges heat with the combustor body by passing through the combustion gas heat exchange path, so that almost all the generated combustion heat is transferred to the entire combustor body. Is composed of That.

  However, the conventional small eddy current combustor that uses aluminum or aluminum alloy (for example, duralumin) with high thermal conductivity as a component of the combustor main body, the heat of the eddy current flame generated in the combustor immediately Because the heat is transferred to the wall of the combustion section and is transferred to the entire combustor body through the wall of the combustion section, the vortex flame temperature in the combustion chamber is greatly reduced compared to the adiabatic flame temperature, and the combustion reaction is promoted by this drop in flame temperature Otherwise, incomplete combustion may occur and carbon monoxide may be generated. Therefore, the conventional small eddy current combustor has a problem that this countermeasure must be taken.

  The present invention has been made in view of such a problem, and suppresses a decrease in the flame temperature of the eddy current flame formed in the combustion portion, and promotes a combustion reaction due to an increase in the flame temperature (maintenance of the flame temperature at a high temperature). An object of the present invention is to provide a small eddy current combustor excellent in safety in which incomplete combustion is reduced as much as possible and generation of carbon monoxide is suppressed as much as possible.

  The gist of the present invention will be described with reference to the accompanying drawings.

  Combustor body portion 2 having a cylindrical combustion portion 1 inside, and a fuel gas introduction portion 3 for introducing fuel gas toward the tangential direction of the inner surface of the combustion portion 1, from the fuel gas introduction portion 3 By introducing the fuel gas into the combustion section 1, the fuel gas turns into a swirl flow in the combustion section 1 to form a vortex flame in the combustion section 1, and the heat of the vortex flame or the vortex flow A small eddy current combustor configured such that the heated portion 4 is heated by the heat of the combustion gas generated by the combustion of the flame, and suppresses a decrease in the flame temperature of the eddy current flame formed in the combustion portion 1 The flame heat insulation part 5 is provided in the position which surrounds the said eddy current flame of the said combustion part 1, It concerns on the small eddy current combustor characterized by the above-mentioned.

  Further, the combustor main body 2 is configured to be heated by the heat, and the combustor main body 2 is the heated portion 4 or is different from the combustor main body 2. The connected heated part 4A provided by a body is configured to be heated by the heat, and the connected heated part 4A is the heated part 4. This relates to a small eddy current combustor.

  Moreover, the said combustion part 1 consists of the cylindrical part formed in the said combustor main-body part 2, and the said combustion part 1 of the position which surrounds the eddy current flame formed in the combustion part 1 which consists of this cylindrical part The heat insulation space | gap part 5 as the said flame heat insulation part 5 is formed in the outer side of this, It concerns on the small eddy current combustor of any one of Claims 1,2.

  Further, the combustion section 1 is formed by disposing a cylindrical combustion section forming section 7 separate from the combustor body section 2 in a combustion section forming hole 6 formed in the combustor body section 2. The flame heat insulating portion 5 is provided inside or outside the cylindrical combustion portion forming portion 7, or the combustion portion forming hole 6 formed in the combustor main portion 2 is provided with the combustor main body. The cylindrical combustion part formation part 7 comprised by the heat insulation member separate from the part 2 is arrange | positioned and formed, and this cylindrical combustion part formation part 7 itself is made into the said flame heat insulation part 5. It concerns on the small eddy current combustor of any one of Claims 1, 2 characterized by the above-mentioned.

  Further, the cylindrical combustion part forming part 7 is disposed between the combustion part forming hole 6 via a heat insulating gap part 5, and this heat insulating gap part 5 serves as the flame heat insulating part 5. The small eddy current combustor according to claim 4, characterized in that:

  6. The small eddy current combustor according to claim 4, wherein the cylindrical combustion part forming part 7 is made of a member having a lower thermal conductivity than the combustor main body part 2. It is related.

  In addition, an introduction heat insulating portion 8 that suppresses heat conduction between the combustion portion 1 and the fuel gas introduction portion 3 is provided between the combustion portion 1 and the fuel gas introduction portion 3. It concerns on the small eddy current combustor of any one of Claims 1-6.

  Since the present invention is configured as described above, a decrease in the flame temperature of the eddy current flame formed in the combustion part is suppressed, and the high temperature state of the flame temperature is maintained, whereby the combustion reaction of the combustion gas introduced into the combustion part Is promoted, and incomplete combustion is reduced as much as possible. Therefore, the generation of carbon monoxide accompanying incomplete combustion is suppressed as much as possible.

  Further, as described above, in the present invention, the flame temperature of the eddy current flame is maintained at a high temperature, so that the combustion gas generated by the combustion of the eddy current flame is also increased in temperature. Heating the heated part efficiently by exchanging heat with the heating part (combustor body part or a connected heated part that is provided separately from the combustor body part and is heated by deriving the combustion gas) Can do.

  Thus, the present invention is an epoch-making small eddy current excellent in safety and practicality, in which the generation of carbon monoxide is suppressed as much as possible, and the heat of high-temperature combustion gas can be effectively used. It becomes a combustor.

1 is an explanatory perspective view illustrating Example 1. FIG. 1 is an explanatory plan sectional view showing Example 1. FIG. 1 is an explanatory exploded perspective view showing Example 1. FIG. FIG. 6 is a schematic diagram showing another example of the combustion part structure of the first embodiment. FIG. 3 is a diagram showing the carbon monoxide reduction effect of Example 1. FIG. 6 is an explanatory plan sectional view showing Example 2. 6 is an explanatory plan sectional view showing Example 3. FIG.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  The fuel gas is introduced from the fuel supply unit into the combustion unit 1 through the fuel gas introduction unit 3. The fuel gas introduced into the combustion section 1 becomes a swirling flow by being introduced into the combustion section 1 from the tangential direction of the inner peripheral surface of the combustion section 1, and the combustion section is ignited by igniting the fuel gas in the swirling flow state. An eddy current flame is formed in 1, combustion gas generated by the combustion of this eddy current flame is discharged from the combustion part 1, and the combustion gas discharged from the combustion part 1 exchanges heat with the heated part 4 to be heated 4. Heat.

  In the present invention, since the eddy current flame formed in the combustion part 1 is surrounded by the flame heat insulating part 5, the heat of the eddy current flame is insulated by the flame heat insulating part 5, and the combustor main part 2 etc. No heat is transferred to the outside of 1, and the flame temperature of the vortex flame does not decrease.

  That is, for example, when the flame heat insulating portion 5 is provided on the outer periphery of the wall surface of the combustion portion 1, the space between the combustion portion 1 and the combustor main body portion 2 is thermally insulated. Since the heat transfer to the vortex flame is suppressed and the high temperature state of the combustion section 1 is maintained by the heat of the vortex flame, the cooling action of the combustion section 1 to the vortex flame is reduced as much as possible. A high temperature state can be maintained without lowering the temperature.

  As a result, the heat of the vortex flame is used for the combustion reaction, the combustion reaction is promoted, and incomplete combustion in the combustion section 1 is reduced as much as possible, so that generation of carbon monoxide is possible. Will be suppressed.

  In the present invention, as described above, the heat of the vortex flame is not transmitted to the outside by the flame heat insulating portion 5. Therefore, the heated part 4 is positively heated by the heat of the combustion gas discharged from the combustion part 1 by the combustion of the vortex flame.

  In the present invention, as described above, since the flame temperature of the eddy current flame is maintained at a high temperature, the combustion gas generated by the combustion of the eddy current flame is also increased in temperature, and thus the high temperature combustion discharged from the combustion section 1 is achieved. Heat can be efficiently exchanged by exchanging heat with gas.

  A specific embodiment 1 of the present invention will be described with reference to FIGS.

  In this embodiment, as shown in FIGS. 1 and 2, a fuel gas is introduced into a combustor main body 2 having a cylindrical combustion portion 1 inside and a tangential direction of the inner surface of the combustion portion 1. The fuel gas is introduced into the combustion part 1 from the fuel gas introduction part 3, and this fuel gas turns into a swirl flow in the combustion part 1 so that a vortex flame is generated in the combustion part 1. The combustor main body 2 as the heated portion 4 is heated by the heat of the swirl flame or the combustion gas generated by the combustion of the swirl flame, and is formed in the combustion portion 1. 3 is a small eddy current combustor provided at a position surrounding the eddy current flame of the combustor 1, specifically, as shown in FIG. Combustor body part 2, cylindrical combustion part forming part 7, fuel gas introduction part 3, introduction part heat insulation 8, is constituted by various parts of the main unit-side closing plate part 9, and a gas inlet-side closing plate part 10.

  Further, in this embodiment, the combustion part 1 is composed of a cylindrical part formed in the combustor main body part 2, and the combustion part at a position surrounding the eddy flame formed in the combustion part 1 composed of this cylindrical part. The flame heat insulating portion 5 is formed on the outside of 1.

  Hereinafter, each component according to the present embodiment will be described in detail.

  As described above, the combustor main body 2 of the present embodiment is also composed of a metal member (for example, aluminum or aluminum alloy) having a high thermal conductivity because it also serves as the heated portion 4.

  Further, the combustor main body 2 of the present embodiment is formed by a combustion part forming hole 6 into which the cylindrical combustion part forming part 7 is inserted and disposed, and the combustion part forming hole 6 and the cylindrical combustion part forming part 7. An exhaust passage portion 11 for discharging the combustion gas discharged from the combustion portion 1 to the outside of the combustor main body portion 2 is formed.

  Specifically, the combustion part forming hole 6 is a through hole penetrating in the front-rear direction of the combustor main body part 2, and the cylindrical combustion part forming part 7 having an inner diameter dimension inserted and disposed in the combustion part forming hole 6. In the state where the cylindrical combustion part forming part 7 is inserted and disposed in the combustion part forming hole 6, a gap is formed between the cylindrical combustion part forming part 7 and the outer diameter dimension. Is formed.

  The exhaust passage section 11 is connected at one end to a combustion gas discharge section 12 provided on one end side of the combustion section 1, specifically, a front end section side (combustion gas discharge port side) of the combustion section 1, The other end is connected to an exhaust port 13 formed in the side surface portion of the combustor main body 2, and the middle portion is disposed so as to cross the entire combustor main body 2. The arrangement state of the exhaust path portion 11 and the arrangement of the exhaust ports 13 are not limited to the configuration described in the present embodiment.

  Moreover, the cylindrical combustion part formation part 7 of a present Example is comprised by the member different from the combustor main-body part 2 mentioned above, and specifically, low heat conductivity whose heat conductivity is lower than the combustor main-body part 2. It is comprised with the member (for example, heat resistant stainless steel material).

  That is, in the present embodiment, the cylindrical combustion part forming part 7 is configured by using a low heat conductive member having a lower thermal conductivity than the combustor main body part 2, so that the cylindrical combustion part forming part 7 is changed to the combustor main body. While the outflow of the heat to the part 2 is suppressed, it is comprised so that the inflow of the cold heat from the combustor main-body part 2 to the cylindrical combustion part formation part 7 may be suppressed.

  Further, the cylindrical combustion portion forming portion 7 of the present embodiment will be described in more detail. The cylindrical combustion portion forming portion 7 of the present embodiment is formed in a cylindrical shape, and this cylindrical combustion portion is formed at the base end portion. A positioning substrate part 14 is provided for disposing the part forming part 7 at a predetermined position with respect to the combustion part forming hole 6. Further, the positioning substrate portion 14 is formed in the same shape as the front surface portion of the combustor main body portion 2, and the positioning substrate portion 14 is superposed on the front surface portion of the combustor main body portion 2. The cylindrical combustion part forming part 7 is configured to be disposed at a predetermined position of the combustion part forming hole 6 (a state where the central axis of the combustion part forming hole 6 and the central axis of the cylindrical combustion part forming part 7 coincide). Has been. When the positioning substrate portion 14 is superposed on the combustor main body 2, the positioning substrate portion 14 and the combustor main body portion are interposed between the positioning substrate portion 14 and the combustor main body portion 2. You may interpose the heat insulation member for suppressing the heat conduction between 2.

  That is, in the present embodiment, a cylindrical combustion portion forming portion 7 configured separately from the combustor main body portion 2 is disposed in the combustion portion forming hole 6 formed in the combustor main body portion 2 described above. Thus, the combustion part 1 is formed, and the flame heat insulating part 5 is provided outside the cylindrical combustion part forming part 7 forming the combustion part 1. Specifically, the cylindrical combustion part forming unit 7 is disposed on the front surface of the combustor body 2 by superposing the positioning substrate part 14 of the cylindrical combustion part forming part 7 so that the cylindrical combustion part forming part 7 and the combustion part forming hole 6 have a gap. A gap between the combustion part forming hole 6 and the cylindrical combustion part forming part 7 is formed in the combustion part 1, specifically, the cylindrical combustion part forming part. 7 is configured to form a heat insulating gap portion 5 as a flame heat insulating portion 5 that insulates the eddy current flame formed in 7 and the combustor main body portion 2.

  That is, conventionally, the combustion part and the combustor body part are integrally formed, and the heat of the eddy current flame formed in the combustion part is immediately transferred to the combustor body part through the wall surface of the combustion part, In this embodiment, the heat of the eddy current flame formed in the combustion part 1 (cylindrical combustion part forming part 7) is reduced to the combustion part 1 ( Even if heat conduction is conducted to the wall surface of the cylindrical combustion part forming part 7), the heat insulating gap part 5 formed at a position surrounding the eddy flame via the wall surface of the combustion part 1 (cylindrical combustion part forming part 7). Since the heat conduction from the wall surface to the combustor main body 2 is suppressed as much as possible by the (flame heat insulating part 5), the flame temperature of the eddy current flame is not lowered and the high temperature state is maintained. Since the high temperature of the flame temperature is maintained, the generation of carbon monoxide due to incomplete combustion, which has been a problem in the past, has occurred. There has been configured to be suppressed as much as possible. In this embodiment, the length of the cylindrical combustion part forming part 7 is made substantially the same as the lengthwise dimension of the combustor main body part 2, and the whole cylindrical combustion part forming part 7, that is, the whole combustion part 1 is used. Is configured to be surrounded by the heat insulating gap 5 as the flame heat insulating portion 5, but this cylindrical combustion portion forming portion 7 only needs to have a length dimension in a range where at least a vortex flame is formed, Therefore, the length dimension of the cylindrical combustion part formation part 7 is set suitably.

  Further, the fuel gas introduction part 3 of the present embodiment is made of the same member as the combustor body part 2 (a metal member having a high thermal conductivity such as aluminum or aluminum alloy), and is separate from the combustor body part 2 and the combustion part 1. Consists of the body.

  Specifically, the fuel gas introduction part 3 of the present embodiment is formed in a plate shape having the same shape as the positioning substrate part 14 of the cylindrical combustion part forming part 7 described above, and the cylinder is interposed via the introduction part heat insulating part 8. The cylindrical combustion part forming part 7 (specifically, the positioning substrate part 14 of the cylindrical combustion part forming part 7) is superposed and disposed.

  More specifically, the fuel gas introduction part 3 has a combustion part communication hole 15 communicating with the cylindrical combustion part formation part 7 penetrating in the front-rear direction (plate thickness direction) at the center of the plate surface. A fuel gas introduction path portion 16 for introducing fuel gas into the combustion portion communication hole 15 is provided on both the left and right sides of the combustion portion communication hole 15.

  The fuel gas introduction path 16 is provided with a tangential outlet 17 having a small diameter (several mm) at the tip, and the tangential outlet 17 is tangent to the inner peripheral surface of the combustion portion communication hole 15. The fuel gas introduced into the combustion portion communication hole 15 from the tangential outlet port 17 provided in the fuel gas introduction path portion 16 is introduced into the combustion portion communication hole 15. 15 is configured to form a swirling flow in the combustion section 1 (specifically, in the cylindrical combustion section forming section 7) and in the combustion section communication hole 15. In this embodiment, the fuel gas introduced into the fuel gas introduction unit 3 is a premixed gas in which air and a combustible gas are mixed in advance.

  Further, the main body side closing plate portion 9 and the gas introduction portion side closing plate portion 10 of the present embodiment are each formed in a flat plate shape, and the main body portion side closing plate portion 9 is the rear surface portion of the combustor main body portion 2. Are arranged so as to close the front end side opening of the combustion portion forming hole 6 formed in the combustor main body portion 2, and the gas introducing portion side closing plate portion 10 includes a fuel gas introducing portion. 3 is arranged so as to block the opening on the base end side of the combustion portion communication hole 15 formed in the fuel gas introduction portion 3 by superposition.

  The main body side blocking plate 9 and the gas introduction side blocking plate 10 are each provided with a vortex flame visual recognition portion 18 made of a heat resistant transparent member such as heat resistant glass at the center of the plate surface. The combustion state of the eddy current flame formed in the combustion part 1 from the flame visual recognition part 18 is comprised so that it can confirm visually. The main body side blocking plate portion 9 and the gas introduction portion side blocking plate portion 10 may be simple plate-like members that do not include the eddy current flame visual recognition portion 18.

  Further, in this embodiment, the combustion part forming hole 6 of the combustor main body 2 and the combustion part communication hole 15 of the fuel gas introduction part 3 are formed as through holes, respectively. The respective opening portions are closed using the closing plate portion 9 and the gas introduction portion side closing plate portion 10, but each of the combustion portion forming hole 6 and the combustion portion communication hole 15 is not used as a through hole. You may form as a bottomed hole. That is, the main body side closing plate portion 9 is formed integrally with the combustor main body portion 2, and the gas introduction portion side closing plate portion 10 is formed integrally with the fuel gas introduction portion 3. It is not necessary to provide the closing plate portion 9 and the gas introduction portion side closing plate portion 10 separately, and workability can be improved and costs can be reduced.

  Further, as described above, in the combustion section 1 of this embodiment, the cylindrical combustion section forming section 7 that is separate from the combustor main section 2 is arranged in the combustion section forming hole 6 formed in the combustor main section 2. The cylindrical combustion part formation part 7 is provided and formed between the combustion part formation hole 6 via the heat insulation gap part 5, but for example, FIG. As shown to a), it is good also as a structure which attached the heat insulation member also to the inner surface of the cylindrical combustion part formation part 7, and formed the flame heat insulation part 5. FIG. Moreover, as shown in FIG.4 (b), a clearance gap is not provided between the combustion part formation hole 6 and the cylindrical combustion part formation part 7 (the heat insulation space | gap part 5 as the flame heat insulation part 5 is not formed), It is good also as a structure which attached the heat insulation member to the inner surface of the cylindrical combustion part formation part 7, and formed the flame heat insulation part 5. FIG. Furthermore, as shown in FIG. 4C, the cylindrical combustion part forming part 7 may be configured by a heat insulating member, and the cylindrical combustion part forming part 7 itself may be a flame heat insulating part 5. Even when the cylindrical combustion part forming part 7 itself is the flame heat insulating part 5, the structure in which the flame heat insulating part 5 is provided on the inner surface of the cylindrical combustion part forming part 7 described above, You may use together the structure which provides the heat insulation space | gap part 5 on the outer side.

  In addition, a heat insulating member may be disposed in the gap between the combustion part forming hole 6 and the cylindrical combustion part forming part 7, and the flame heat insulating part 5 may be formed instead of the heat insulating gap part 5.

  The operation and effect of the present embodiment configured as described above will be described below.

  In this embodiment, the fuel gas (premixed gas) supplied from the fuel supply unit is introduced into the combustion unit 1 via the fuel gas introduction unit 3, and the fuel gas introduced into the combustion unit 1 is in a swirling flow state. The vortex flame is formed in the combustion section 1 by igniting the fuel gas in the swirling flow state, and the vortex flame formed in the combustion section 1 is formed in the combustion section 1, specifically, the cylinder. Of the vortex flame due to the heat insulating action of the heat insulating gap 5 formed on the outer periphery of the cylindrical combustion portion forming portion 7 and the introducing portion heat insulating portion 8 provided between the positioning substrate portion 14 and the fuel gas introducing portion 3. Heat conduction to the combustor main body 2 and the fuel gas introduction unit 3 is suppressed as much as possible, thereby suppressing the external release of heat of the vortex flame, and the flame temperature of the vortex flame is not lowered and a high temperature state is achieved. And the high-temperature state of the vortex flame is maintained. , The generation of carbon monoxide is suppressed as much as possible due to incomplete combustion combustion reaction is a conventional problem is promoted (see Fig. 5).

  In addition, by maintaining the high-temperature state of the eddy current flame, the combustion gas generated by the combustion of the eddy current flame is also increased in temperature, so that the high temperature combustion gas is exhausted from the combustion section 1. While the high-temperature combustion gas flows through the exhaust passage portion 11, heat exchange with the combustor main body 2 is performed through the wall surface of the exhaust passage portion 11, and the heated portion 4 is made the heated portion 4 by the heat of the combustion gas. The combustor body 2 is efficiently heated, and the combustor body 2 itself can be used as a heating element.

  Furthermore, the present embodiment is a simple configuration in which the cylindrical combustion portion forming portion 7 is inserted and disposed in the combustion portion forming hole 6 formed in the combustor main body portion 2, and combustion that does not lower the flame temperature of the vortex flame. The partial structure can be easily designed and realized.

  As described above, in this embodiment, the generation of carbon monoxide due to incomplete combustion, which has been a problem in the past, is suppressed as much as possible, and the heat that can effectively use the heat of the high-temperature combustion gas can be used. Moreover, it becomes an epoch-making small eddy current combustor excellent in practicality.

  A second embodiment of the present invention will be described with reference to FIG.

  This embodiment is configured so that the connected heated part 4A provided separately from the combustor body 2 in Example 1 is heated by the heat of the vortex flame or the heat of the combustion gas. This is a case where the connected heated part 4 </ b> A is the heated part 4.

  Specifically, the heated portion 4 (connected heated portion 4A) of the present embodiment is formed in a box shape and is in communication with the combustion gas discharge portion 12 formed in the combustor main body portion 2. A connection communication hole 19 and an exhaust port 13 through which the introduced combustion gas is discharged are provided.

  More specifically, the heated portion 4 (connected heated portion 4A) of the present embodiment is attached to the rear surface side of the combustor body portion 2, and the combustion gas discharged from the combustion portion 1 is burned. It is introduced into the heated part 4 (connected heated part 4A) from the combustor main body connecting communication hole 19 via the gas discharge part 12, and the introduced high-temperature combustion gas is heated to the heated part 4 (connected heated part). After the heat exchange with 4A), the air is discharged from the exhaust port 13. In this embodiment, since the combustor body 2 is not the heated portion 4, the exhaust passage 11 is not formed in the combustor body 2, and the rest of the structure is implemented. Similar to Example 1.

  A specific third embodiment of the present invention will be described with reference to FIG.

  The present embodiment is a case where the combustion section 1 and the fuel gas introduction section 3 are integrally formed with the combustor main body section 2 in the first embodiment. That is, in the combustion section 1 of the first embodiment, a cylindrical combustion section forming section 7 configured separately from the combustor body section 2 is inserted and disposed in the combustion section forming hole 6 formed in the combustor body section 2. However, the combustion part 1 of the present embodiment does not have the combustion part formation hole 6 and the cylindrical combustion part formation part 7, and the combustion part 1 is integrally formed in the combustor body part 2. It is a case.

  Specifically, as shown in FIG. 7, the combustion section 1 of the present embodiment has a front end of the combustion section 1 on the outer periphery of a combustion section forming through hole 20 that is formed to penetrate the combustor body section 2 in the front-rear direction. It is set as the structure which consists of a cylindrical part formed by forming a deep groove part toward a base end part side from a part side.

  And the said deep groove part formed in the outer periphery of the combustion part 1 which consists of this cylindrical part is set as the structure corresponded to the heat insulation space | gap part 5 (flame heat insulation part 5) in Example 1. FIG.

  Further, the fuel gas introduction part 3 has the same configuration as that of the prior art. Specifically, as shown in the drawing, the fuel gas introduction path part 16 extends from the left and right side surfaces of the combustor body part 2 toward the inside. A small-diameter (several mm) tangential outlet 17 for introducing the fuel gas toward the tangential direction of the inner surface of the combustion section 1 is formed at the tip of the fuel gas introduction passage section 16. Yes.

  Moreover, since the combustion part 1, the combustor main body part 2, and the fuel gas introduction part 3 are integrally configured in the present example, the introduction part heat insulation part 8 in Example 1 is not provided. The rest of the configuration is the same as in the first embodiment.

  In addition, this invention is not restricted to Examples 1-3, The concrete structure of each component can be designed suitably.

DESCRIPTION OF SYMBOLS 1 Combustion part 2 Combustor main-body part 3 Fuel gas introduction part 4 Heated part 4A Connection heated part 5 Flame heat insulation part, heat insulation space | gap part 6 Combustion part formation hole 7 Cylindrical combustion part formation part 8 Introduction part heat insulation part

Claims (7)

  Combustor main body having a cylindrical combustion part inside, and a fuel gas introduction part for introducing fuel gas toward the tangential direction of the inner surface of the combustion part, fuel from the fuel gas introduction part into the combustion part When the gas is introduced, the fuel gas turns into a swirl flow in the combustion section, and a vortex flame is formed in the combustion section. The heat of the vortex flame or the combustion gas generated by the combustion of the vortex flame is used. A small eddy current combustor configured to heat a heated part, wherein a flame heat insulating part that suppresses a flame temperature drop of the eddy current flame formed in the combustion part surrounds the eddy current flame of the combustion part A small eddy current combustor provided at a position where   The combustor main body is configured to be heated by the heat, and the combustor main body is the heated portion or is provided separately from the combustor main body. The small eddy current combustor according to claim 1, wherein the connected heated part is configured to be heated by the heat, and the connected heated part is the heated part.   The combustion part is formed of a cylindrical part formed in the combustor main body part, and the flame heat insulating part is provided outside the combustion part at a position surrounding an eddy current flame formed in the combustion part formed of the cylindrical part. A small eddy current combustor according to any one of claims 1 and 2, characterized in that a heat insulating gap is formed.   The combustion part is formed by arranging a cylindrical combustion part forming part separate from the combustor body part in a combustion part forming hole formed in the combustor body part. The flame heat insulating part is provided inside or outside the forming part, or the combustion part forming hole formed in the combustor main body part is constituted by a heat insulating member separate from the combustor main body part. The cylindrical combustion part formation part is arrange | positioned and formed, This cylindrical combustion part formation part itself is made into the said flame heat insulation part, The any one of Claims 1, 2 characterized by the above-mentioned. Small eddy current combustor.   The said cylindrical combustion part formation part is arrange | positioned through the heat insulation space | gap part between the said combustion part formation holes, and this heat insulation space | gap part is made into the said flame heat insulation part. 4. A small eddy current combustor according to item 4.   The small eddy current combustor according to any one of claims 4 and 5, wherein the cylindrical combustion part forming part is made of a member having a lower thermal conductivity than the combustor main body part.   The introduction part heat insulation part which suppresses the heat conduction between this combustion part and the fuel gas introduction part is provided between the combustion part and the fuel gas introduction part. The small eddy current combustor of any one of these.

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