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JP6707785B2 - Small vortex combustor - Google Patents
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JP6707785B2 - Small vortex combustor - Google Patents

Small vortex combustor Download PDF

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JP6707785B2
JP6707785B2 JP2016140031A JP2016140031A JP6707785B2 JP 6707785 B2 JP6707785 B2 JP 6707785B2 JP 2016140031 A JP2016140031 A JP 2016140031A JP 2016140031 A JP2016140031 A JP 2016140031A JP 6707785 B2 JP6707785 B2 JP 6707785B2
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combustion
flame
vortex
combustor
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JP2018009757A (en
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直樹 横尾
直樹 横尾
佐藤 浩之
浩之 佐藤
大右 下栗
大右 下栗
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Hiroshima University NUC
Dainichi Co Ltd
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Dainichi Co Ltd
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Description

本発明は、小型渦流燃焼器に関するものである。 The present invention relates to a small swirl combustor.

近年、超小型電子機器(例えばMEMS等)の発達に伴い、これらの電力源の小型化が課題とされているなか、エネルギー密度の高い炭化水素燃料を利用した小型燃焼器が注目を集めており、その中の一つに小型渦流燃焼器がある。 In recent years, with the development of ultra-small electronic devices (eg, MEMS), miniaturization of these electric power sources has become an issue, and small combustors using hydrocarbon fuel with high energy density have been attracting attention. , One of them is the small vortex combustor.

この小型渦流燃焼器は、熱伝導率が高いアルミニウム等で形成された燃焼器本体内に、管状の燃焼部と、この燃焼部の一端に接線方向に向けて予混合気を導入する予混合気導入経路と、燃焼により生じた高温の燃焼ガスと熱交換する燃焼ガス熱交換経路とが形成されていて、予混合気導入経路から燃焼部内に接線方向に予混合気が導入されることで燃焼部内に高速の旋回流が発生して渦流火炎が形成され、この渦流火炎の高速な周方向回転速度によって火炎熱が燃焼部内壁を介して燃焼器本体部全体に素早く熱伝導されるとともに、燃焼により生じた高温の燃焼ガスが燃焼ガス熱交換経路を通過することで燃焼器本体部と熱交換を行ない、これにより、発生したほぼ全ての燃焼熱を燃焼器本体部全体に熱伝導するように構成されているものである。 This small vortex combustor consists of a tubular combustor inside a combustor body made of aluminum, which has a high thermal conductivity, and a premixture that introduces the premixed mixture tangentially to one end of this combustor. A combustion gas heat exchange path that exchanges heat with the high temperature combustion gas generated by combustion is formed, and combustion is performed by introducing the premixed gas tangentially from the premixed gas introduction path into the combustion section. A high-speed swirling flow is generated inside the part to form a vortex flame, and the high speed of rotation of the vortex flame in the circumferential direction causes the heat of the flame to be rapidly conducted to the entire main part of the combustor through the inner wall of the combustion part, and the combustion. The high-temperature combustion gas generated by heat exchanges with the combustor body by passing through the combustion gas heat exchange path, so that almost all combustion heat generated is conducted to the entire combustor body. It is configured.

しかしながら、熱伝導率の高いアルミニウムやアルミニウム合金(例えばジュラルミン)を燃焼器本体の構成部材として用いている従来の小型渦流燃焼器は、燃焼部内で発生した渦流火炎の熱が直ちに渦流火炎の周囲の燃焼部壁面に熱伝導し、この燃焼部壁面を通じて燃焼器本体全体に熱伝導されるため、燃焼室内の渦流火炎温度が断熱火炎温度に比べて大きく低下し、この火炎温度の低下により燃焼反応が促進されず不完全燃焼が生じてしまう虞があり、この不完全燃焼が生じると、一酸化炭素が発生するだけでなく、発熱量が低下して被加熱部である燃焼器本体部への熱伝導量が低下してしまい、この燃焼器本体部の温度の低下や熱回収率の低下などの問題が生じてしまう。そのため、従来の小型渦流燃焼器は、この対策を講じなければならない問題を抱えている。 However, in the conventional small eddy combustor that uses aluminum or aluminum alloy (for example, duralumin) having high thermal conductivity as a constituent member of the combustor body, the heat of the eddy flame generated in the combustor immediately causes the heat around the eddy flame. The heat is conducted to the wall surface of the combustion section and is conducted to the entire combustor body through the wall surface of the combustion section.Therefore, the eddy flame temperature in the combustion chamber is much lower than the adiabatic flame temperature, and the combustion reaction is caused by the decrease in the flame temperature. There is a risk that incomplete combustion will occur without being promoted. If this incomplete combustion occurs, not only carbon monoxide will be generated, but also the amount of heat generated will decrease and heat to the combustor body, which is the heated part The amount of conduction decreases, and problems such as a decrease in the temperature of the main body of the combustor and a decrease in the heat recovery rate occur. Therefore, the conventional small swirl combustor has a problem that this countermeasure must be taken.

本発明は、このような問題に鑑みなされたもので、燃焼部内に形成される渦流火炎の火炎温度の低下が抑制され、火炎温度上昇(火炎温度の高温状態の維持)による燃焼反応の促進により不完全燃焼が低減されるとともに、渦流火炎の燃焼によって生じた熱が積極的に被加熱部に熱伝導されてこの被加熱部が効率的に加熱される安全性且つ実用性に優れた小型渦流燃焼器を提供することを目的とする。 The present invention has been made in view of such a problem, by suppressing a decrease in the flame temperature of the vortex flame formed in the combustion portion, and by promoting the combustion reaction by increasing the flame temperature (maintaining a high temperature state of the flame temperature). Incomplete combustion is reduced, and the heat generated by the combustion of the vortex flame is positively conducted to the heated part, which efficiently heats the heated part. The purpose is to provide a combustor.

添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be described with reference to the accompanying drawings.

内部に筒状の燃焼部1を有する燃焼器本体部2と、前記燃焼部1の内面の接線方向に向けて燃料ガスを導入する燃料ガス導入部3とから成り、前記燃料ガス導入部3から前記燃焼部1内に燃料ガスが導入されることで、この燃料ガスが前記燃焼部1内で旋回流になって該燃焼部1内に渦流火炎が形成され、この渦流火炎の熱若しくは前記渦流火炎の燃焼によって生じた燃焼ガスの熱により被加熱部4が加熱されるように構成された小型渦流燃焼器であって、前記燃焼部1は、前記熱により加熱される前記被加熱部4となる前記燃焼器本体部2に形成された燃焼部形成孔5に、前記燃焼器本体部2と別体の筒状燃焼部形成部6が配設されてなる構成とされ前記筒状燃焼部形成部6は、燃焼時に渦流火炎が形成される渦流火炎形成領域部7と前記渦流火炎が形成されない渦流火炎非形成領域部8とが生じる構成とされると共に、これら渦流火炎形成領域部7及び渦流火炎非形成領域部8が該渦流火炎形成領域部7で形成される渦流火炎の火炎温度の低下を抑制する火炎温度保持部9で囲繞され、且つ前記渦流火炎非形成領域部8が熱伝導部材10を介して前記被加熱部4となる前記燃焼器本体部2と熱伝導可能に連結されており、前記熱伝導部材10は、平板状に形成され、前記火炎温度保持部9を挟んで並設される前記渦流火炎非形成領域部8に設けられる燃焼部側熱伝導部材着接部11と、前記燃焼器本体部2に設けられる被加熱部側熱伝導部材着接部12とに架設状態に設けられていることを特徴とする小型渦流燃焼器に係るものである。 It comprises a combustor body 2 having a cylindrical combustion section 1 therein, and a fuel gas introduction section 3 for introducing a fuel gas in the tangential direction of the inner surface of the combustion section 1. From the fuel gas introduction section 3 When the fuel gas is introduced into the combustion section 1, the fuel gas turns into a swirl flow in the combustion section 1 to form a swirl flame in the combustion section 1, and the heat of the swirl flame or the swirl flow is generated. A small eddy 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 the combustion portion 1 includes the heated portion 4 and the heated portion 4. in the combustor main body 2 combustion portion formed hole 5 formed in made, the combustor main body 2 and the separate cylindrical combustion portion forming portion 6 is a arranged to become a configuration, the tubular combustion portion forming unit 6, when with vortex flame is a vortex flame non-forming region portion 8 in which the vortex flame with swirl flame formation region 7 is not formed is formed as occurs configuration combustion, these vortex flame formation region 7 and The vortex flame non-formation area portion 8 is surrounded by a flame temperature holding portion 9 which suppresses a decrease in flame temperature of the vortex flow flame formed in the vortex flow flame formation area portion 7, and the vortex flame non-formation area portion 8 conducts heat. It is connected via a member 10 to the combustor body 2 that is to be the heated portion 4 so as to be able to conduct heat, and the heat conducting member 10 is formed in a flat plate shape and sandwiches the flame temperature holding portion 9 between them. The combustion part side heat conduction member contact portion 11 provided in the vortex flame non-formation region portion 8 and the heated portion side heat conduction member contact portion 12 provided in the combustor body 2 are installed side by side. it relates to a small vortex combustor, characterized in that provided we are in the state.

また、前記燃焼部形成孔5は、この燃焼部形成孔5に挿入される前記筒状燃焼部形成部6の前記渦流火炎非形成領域部8が生じる先端部側の内径寸法が、前記渦流火炎形成領域部7が生じる基端部側の内径寸法よりも拡径されていて、この内径寸法が拡径される境界部に形成される段差平坦部を前記被加熱部側熱伝導部材着接部12とする構成とされていることを特徴とする請求項1記載の小型渦流燃焼器に係るものである。The inner diameter of the combustion portion forming hole 5 on the tip end side where the vortex flame non-forming area portion 8 of the tubular combustion portion forming portion 6 inserted into the combustion portion forming hole 5 is the vortex flame. The stepped flat portion formed at the boundary portion where the inner diameter of the base end portion side where the formation area portion 7 is formed is expanded and the inner diameter dimension is expanded is the heat transfer member contacting portion on the heated portion side. The small eddy combustor according to claim 1, wherein the structure is set to 12.

また、前記筒状燃焼部形成部6は、前記渦流火炎非形成領域部8が生じる先端部側の周壁の厚さが、前記渦流火炎形成領域部7が生じる基端部側に比べて薄く形成されていて、この厚さが薄くなる境界部に形成される段差部を前記燃焼部側熱伝導部材着接部11とする構成とされていることを特徴とする請求項1,2のいずれか1項に記載の小型渦流燃焼器に係るものである。Further, in the tubular combustion portion forming portion 6, the thickness of the peripheral wall on the tip end side where the vortex flame non-forming area portion 8 is formed is thinner than that on the base end side where the vortex flame forming area portion 7 is formed. The stepped portion formed at the boundary portion where the thickness is thin is used as the combustion portion side heat conduction member contacting portion 11 according to any one of claims 1 and 2. The present invention relates to the small eddy combustor according to item 1.

また、前記熱伝導部材10は、複数の燃焼ガス通過孔21が形成されていることを特徴とする請求項1〜3のいずれか1項に記載の小型渦流燃焼器に係るものである。Further, the heat conducting member 10 has a plurality of combustion gas passage holes 21 formed therein, and is related to the small swirl combustor according to any one of claims 1 to 3.

また、前記燃焼部1と前記燃料ガス導入部3との間に、この燃焼部1と前記燃料ガス導入部3との間の熱伝導を抑制する導入部断熱部13が設けられていることを特徴とする求項1〜4のいずれか1項に記載の小型渦流燃焼器に係るものである。 Further, between the combustion section 1 and the fuel gas introduction section 3, an introduction section heat insulation section 13 for suppressing heat conduction between the combustion section 1 and the fuel gas introduction section 3 is provided. The present invention relates to the small eddy combustor according to any one of claims 1 to 4.

本発明は上述のように構成したから、燃焼部内に形成される渦流火炎の火炎温度の低下が抑制され、火炎温度上昇(火炎温度の高温状態の維持)による燃焼反応の促進により不完全燃焼が低減されるとともに、渦流火炎の燃焼によって生じた熱が積極的に被加熱部に熱伝導されてこの被加熱部が効率的に加熱される安全性且つ実用性に優れた画期的な小型渦流燃焼器となる。 Since the present invention is configured as described above, the decrease in the flame temperature of the vortex flame formed in the combustion section is suppressed, and the incomplete combustion is promoted by the promotion of the combustion reaction due to the flame temperature increase (maintaining the high temperature state of the flame temperature). An epoch-making small vortex that is reduced in safety and is highly practical because the heat generated by the combustion of the vortex flame is positively conducted to the heated part and the heated part is efficiently heated. It becomes a combustor.

実施例1を示す説明斜視図である。It is an explanatory perspective view showing Example 1. 実施例1を示す説明平断面図である。3 is an explanatory plan sectional view showing Example 1. FIG. 実施例1を示す説明分解斜視図である。It is an explanatory exploded perspective view showing Example 1. 実施例1の熱伝導部材取り付け状態を示す説明図である。FIG. 5 is an explanatory diagram showing a heat conductive member attachment state of the first embodiment. 実施例1の渦流火炎非形成領域部での熱伝導の様子を示す説明図である。FIG. 5 is an explanatory diagram showing a state of heat conduction in a vortex flame non-formation region portion of the first embodiment. 実施例2を示す説明平断面図である。It is an explanatory plane sectional view showing Example 2. 実施例3を示す説明平断面図である。It is an explanatory plane sectional view showing Example 3.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。 A preferred embodiment of the present invention will be briefly described with reference to the drawings showing the operation of the present invention.

燃料供給部から供給される燃料ガスは、燃料ガス導入部3を介して燃焼部1を形成する筒状燃焼部形成部6内に導入される。 The fuel gas supplied from the fuel supply section is introduced into the tubular combustion section forming section 6 forming the combustion section 1 via the fuel gas introduction section 3.

燃料ガス導入部3から導入された燃料ガスは、筒状燃焼部形成部6内で旋回流状態となり、これにより、燃焼時に筒状燃焼部形成部6内で渦流火炎が形成される。 The fuel gas introduced from the fuel gas introduction part 3 is in a swirling flow state in the tubular combustion part forming part 6, whereby a vortex flame is formed in the tubular combustion part forming part 6 during combustion.

筒状燃焼部形成部6において、この渦流火炎が形成される渦流火炎形成領域部7は、火炎温度保持部9で囲繞されているので、この火炎温度保持部9により筒状燃焼部形成部6内で形成される渦流火炎の熱がこの筒状燃焼部形成部6の外(例えば燃焼器本体部2や燃料ガス導入部3など)へ熱伝導されることが抑制され、これにより、渦流火炎の火炎温度の低下が抑制されて、渦流火炎の高温状態が維持されることで燃焼反応が促進され、不完全燃焼が低減されることとなり、一酸化炭素の発生が抑制されるとともに、未燃の燃料が減少するので、発熱ロスが低減されて、渦流火炎の燃焼による発熱量が向上する。 In the tubular combustion portion forming portion 6, since the eddy flame forming area portion 7 in which the vortex flame is formed is surrounded by the flame temperature holding portion 9, the tubular temperature portion forming portion 6 forms the tubular combustion portion forming portion 6 by the flame temperature holding portion 9. The heat of the vortex flame formed inside is suppressed from being conducted to the outside of the tubular combustion portion forming portion 6 (for example, the combustor body portion 2, the fuel gas introducing portion 3 and the like), whereby the vortex flame is formed. The decrease in flame temperature is suppressed and the high temperature state of the vortex flame is maintained, which promotes the combustion reaction and reduces incomplete combustion. Since the amount of fuel is reduced, heat loss is reduced, and the amount of heat generated by the combustion of the vortex flame is improved.

そして、この渦流火炎の燃焼によって生じた熱(渦流火炎の熱および渦流火炎の燃焼によって生じた燃焼ガスの熱)が、渦流火炎が形成されない渦流火炎非形成領域部8から熱伝導可能に連結されている被加熱部4に熱伝導して、被加熱部4が積極的に加熱されることとなる。 Then, the heat generated by the combustion of the vortex flame (the heat of the vortex flame and the heat of the combustion gas generated by the combustion of the vortex flame) is connected to the vortex flame non-formation region portion 8 where the vortex flame is not formed so as to be able to conduct heat. The heat is conducted to the heated portion 4 being heated, and the heated portion 4 is actively heated.

即ち、本発明は、筒状燃焼部形成部6内で形成される渦流火炎の熱がこの筒状燃焼部形成部6の外部に熱伝導する際は、渦流火炎の燃焼に影響しにくい、渦流火炎が形成されない渦流火炎非形成領域部8で行われるから、渦流火炎の温度を殆ど低下させることなく、この渦流火炎の燃焼によって生じた熱を被加熱部4へ熱伝導させて、この被加熱部4を効率良く加熱することができる。 That is, according to the present invention, when the heat of the vortex flow flame formed in the tubular combustion portion forming portion 6 is conducted to the outside of the tubular combustion portion forming portion 6, the vortex flow is less likely to affect the combustion of the vortex flame. Since it is performed in the vortex flame non-formation area portion 8 in which no flame is formed, the heat generated by the combustion of the vortex flame is transferred to the heated portion 4 with almost no decrease in the temperature of the vortex flame, and the heated object is heated. The part 4 can be efficiently heated.

また更に、渦流火炎の燃焼によって生じた熱を、筒状燃焼部形成部6の渦流火炎非形成領域部8から被加熱部4へ積極的に熱伝導させることで、筒状燃焼部形成部6の過剰加熱も抑制されることとなり、これにより筒状燃焼部形成部6の高温劣化による損傷の虞が可及的に低減され、筒状燃焼部形成部6の高寿命化が図れるとともに、本小型渦流燃焼器の信頼性も向上することとなる。 Furthermore, the heat generated by the combustion of the vortex flame is positively conducted to the heated portion 4 from the vortex flame non-formation region portion 8 of the tubular combustion portion forming portion 6, whereby the tubular combustion portion forming portion 6 is formed. The excessive heating of the tubular combustion portion forming section 6 is also suppressed, whereby the risk of damage due to the high temperature deterioration of the tubular combustion section forming section 6 is reduced as much as possible, and the life of the tubular combustion section forming section 6 is increased, and The reliability of the small swirl combustor will also be improved.

このように、本発明は、筒状燃焼部形成部6(燃焼部1)内に形成される渦流火炎の火炎温度の低下が抑制され、火炎温度上昇(火炎温度の高温状態の維持)による燃焼反応の促進により不完全燃焼が低減されるとともに、渦流火炎の燃焼によって生じた熱が積極的に被加熱部4に熱伝導されてこの被加熱部4が効率的に加熱され、しかも、筒状燃焼部形成部6の高温劣化による損傷の虞も無く安心して使用できる安全性且つ実用性に優れた画期的な小型渦流燃焼器となる。 As described above, according to the present invention, the decrease in flame temperature of the vortex flame formed in the tubular combustion portion forming portion 6 (combustion portion 1) is suppressed, and the combustion is performed by increasing the flame temperature (maintaining a high temperature state of the flame temperature). The incomplete combustion is reduced by the promotion of the reaction, and the heat generated by the combustion of the vortex flame is positively conducted to the heated portion 4 so that the heated portion 4 is efficiently heated. This is an epoch-making small vortex combustor with excellent safety and practicality that can be safely used without fear of damage due to high temperature deterioration of the combustion part forming part 6.

本発明の具体的な実施例1について図1〜図5に基づいて説明する。 A first specific example of the present invention will be described with reference to FIGS.

本実施例は、図1,2に示すように、内部に筒状の燃焼部1を有する燃焼器本体部2と、燃焼部1の内面の接線方向に向けて燃料ガスを導入する燃料ガス導入部3とから成り、燃料ガス導入部3から燃焼部1内に燃料ガスが導入されることで、この燃料ガスが燃焼部1内で旋回流になってこの燃焼部1内に渦流火炎が形成され、この渦流火炎の熱若しくは渦流火炎の燃焼によって生じた燃焼ガスの熱により被加熱部4が加熱されるように構成され、更に、燃焼部1は、燃焼器本体部2に形成された燃焼部形成孔5に、燃焼器本体部2と別体で構成される筒状燃焼部形成部6が配設されて形成されており、この燃焼部1を形成する筒状燃焼部形成部6は、燃焼時に、渦流火炎が形成される渦流火炎形成領域部7と、渦流火炎が形成されない渦流火炎非形成領域部8とが生じる構成とされるとともに、渦流火炎形成領域部7が該渦流火炎形成領域部7で形成される渦流火炎の火炎温度の低下を抑制する火炎温度保持部9で囲繞され、且つ渦流火炎非形成領域部8が被加熱部4と熱伝導可能に連結されている小型渦流燃焼器である。 In the present embodiment, as shown in FIGS. 1 and 2, a combustor body 2 having a cylindrical combustion section 1 inside, and a fuel gas introduction for introducing the fuel gas in the tangential direction of the inner surface of the combustion section 1 The fuel gas is introduced into the combustion section 1 from the fuel gas introduction section 3, and the fuel gas turns into a swirl flow in the combustion section 1 to form a vortex flame in the combustion section 1. The heated portion 4 is heated by the heat of the vortex flame or the heat of the combustion gas generated by the combustion of the vortex flame. Further, the combustion portion 1 is formed by the combustion formed in the combustor body portion 2. A tubular combustion portion forming portion 6 formed separately from the combustor body portion 2 is disposed in the portion forming hole 5, and the tubular combustion portion forming portion 6 forming the combustion portion 1 is At the time of combustion, a swirl flame formation region 7 in which a swirl flame is formed and a swirl flame non-formation region 8 in which a swirl flame is not formed are generated, and the swirl flame formation region 7 is formed by the swirl flame formation region 7. A small eddy current surrounded by a flame temperature holding portion 9 that suppresses a decrease in the flame temperature of an eddy-current flame formed in the area portion 7, and an eddy-flow flame non-formation area portion 8 that is connected to the heated portion 4 in a heat conductive manner. It is a combustor.

具体的には、本実施例は、図3に示すように、燃焼器本体部2、筒状燃焼部形成部6、燃料ガス導入部3、導入部断熱部13、熱伝導部材10、本体部側閉塞板部14及びガス導入部側閉塞板部15の各部により構成されている。 Specifically, in this embodiment, as shown in FIG. 3, the combustor body 2, the tubular combustion portion forming portion 6, the fuel gas introducing portion 3, the introducing portion heat insulating portion 13, the heat conducting member 10, the body portion. Each of the side blocking plate portion 14 and the gas introducing portion side blocking plate portion 15 is configured.

以下、本実施例に係る構成各部について詳細に説明する。 Hereinafter, each component of the present embodiment will be described in detail.

本実施例の燃焼器本体部2は、この燃焼器本体部2自体が被加熱部4となる構成とされていて、そのため、熱伝導率の高い金属部材(例えばアルミニウムやアルミニウム合金等)で構成されている。 The combustor main body 2 of the present embodiment is configured such that the combustor main body 2 itself becomes the heated portion 4, and therefore, the combustor main body 2 is composed of a metal member having high thermal conductivity (for example, aluminum or aluminum alloy). Has been done.

また、本実施例の燃焼器本体部2は、後述する筒状燃焼部形成部6を挿入配設する燃焼部形成孔5と、燃焼部1から熱伝導する熱の受部となる被加熱部側熱伝導部材着接部12と、燃焼によって生じた燃焼ガスを外部へ排出するための排気経路部16とが設けられている。 Further, the combustor body 2 of the present embodiment includes a combustion portion forming hole 5 into which a cylindrical combustion portion forming portion 6 to be described later is inserted, and a heated portion serving as a heat receiving portion for heat conduction from the combustion portion 1. A side heat conduction member contacting portion 12 and an exhaust path portion 16 for discharging combustion gas generated by combustion to the outside are provided.

具体的には、燃焼部形成孔5は、燃焼器本体部2の前後方向に貫通する貫通孔であり、内径寸法がこの燃焼部形成孔5内に挿入配設される筒状燃焼部形成部6の外径寸法よりも若干大径に設定されている。即ち、本実施例の燃焼器本体部2は、燃焼部形成孔5に筒状燃焼部形成部6を挿入配設すると、この挿入配設された筒状燃焼部形成部6と燃焼部形成孔5の内周面との間に隙間が形成されるように構成されていて、この隙間が、筒状燃焼部形成部6内に形成される渦流火炎の火炎温度の低下を抑制する火炎温度保持部9としての燃焼ガス流通空隙部9となる構成とされている。 Specifically, the combustion section forming hole 5 is a through hole penetrating in the front-rear direction of the combustor body section 2, and the inner diameter dimension of the cylindrical combustion section forming section is inserted and arranged in the combustion section forming hole 5. The diameter is set to be slightly larger than the outer diameter dimension of No. 6. That is, in the combustor body 2 of the present embodiment, when the tubular combustion portion forming portion 6 is inserted and arranged in the combustion portion forming hole 5, the cylindrical combustion portion forming portion 6 and the combustion portion forming hole that are inserted and arranged. 5 is configured to form a gap between the inner peripheral surface of the flame 5, and the flame temperature holding for suppressing a decrease in the flame temperature of the vortex flame formed in the tubular combustion portion forming portion 6. It is configured to serve as the combustion gas flow gap 9 as the portion 9.

即ち、この燃焼ガス流通空隙部9は、筒状燃焼部形成部6を囲繞するように環状に形成され、筒状燃焼部形成部6、即ち燃焼部1と燃焼器本体部2とを分離するように形成されており、筒状燃焼部形成部6内で形成される渦流火炎の熱の燃焼器本体部2への熱伝導を抑制するように構成されている。尚、この燃焼ガス流通空隙部9は、少なくとも渦流火炎が形成される筒状燃焼部形成部6の渦流火炎形成領域部7を囲繞する位置に形成される構成とされ、本実施例においては、この燃焼ガス流通空隙部9が、この渦流火炎形成領域部7以外に、渦流火炎が形成されない筒状燃焼部形成部6の渦流火炎非形成領域部8も囲繞するように形成されている。 That is, the combustion gas flow gap 9 is formed in an annular shape so as to surround the tubular combustion portion forming portion 6, and separates the tubular combustion portion forming portion 6, that is, the combustion portion 1 and the combustor body portion 2. Is formed as described above, and is configured to suppress the heat conduction of the heat of the vortex flame formed in the cylindrical combustion portion forming portion 6 to the combustor body portion 2. The combustion gas flow gap 9 is formed at a position surrounding at least the vortex flame forming area 7 of the tubular combustion portion forming portion 6 in which the vortex flame is formed. In the present embodiment, The combustion gas flow gap 9 is formed so as to surround the swirl flame formation region 7 and the swirl flame non-formation region 8 of the tubular combustion part formation portion 6 where no swirl flame is formed.

また、本実施例の燃焼部形成孔5は、燃焼部1の燃焼ガス排出口17側、言い換えると、この燃焼部形成孔5に挿入配設される筒状燃焼部形成部6の先端部側が基端部側よりも大径に形成されていて、筒状燃焼部形成部6が挿入配設されることで、筒状燃焼部形成部6の基端部側に前述した燃焼ガス流通空隙部9が形成され、先端部側にこの燃焼ガス流通空隙部9よりも幅広の燃焼ガス誘導部18が形成されるように構成されている。 Further, the combustion section forming hole 5 of the present embodiment is located on the combustion gas outlet 17 side of the combustion section 1, in other words, on the tip side of the tubular combustion section forming section 6 inserted and arranged in the combustion section forming hole 5. The tubular combustion portion forming portion 6 is formed to have a diameter larger than that of the base end portion side, and the tubular combustion portion forming portion 6 is inserted and arranged, so that the combustion gas distribution void portion described above is provided on the base end portion side of the tubular combustion portion forming portion 6. 9 is formed, and a combustion gas guide portion 18 wider than the combustion gas flow gap 9 is formed on the tip end side.

この燃焼ガス誘導部18は、燃焼ガス流通空隙部9と同様、燃焼部1(筒状燃焼部形成部6)を囲繞するように環状に形成されると共に、燃焼ガス流通空隙部9と連通状態に形成されていて、燃焼部1から排出された燃焼ガスがこの燃焼ガス誘導部18に誘導され、この燃焼ガス誘導部18を通じて燃焼ガス流通空隙部9へ導入されるように構成されている。 The combustion gas guide portion 18 is formed in an annular shape so as to surround the combustion portion 1 (cylindrical combustion portion forming portion 6) and is in communication with the combustion gas passage void portion 9, like the combustion gas passage void portion 9. The combustion gas discharged from the combustion section 1 is guided to the combustion gas guide section 18 and introduced into the combustion gas flow gap 9 through the combustion gas guide section 18.

また、本実施例は、この燃焼部形成孔5の内径寸法が拡大される境界部、即ち燃焼ガス流通空隙部9と燃焼ガス誘導部18との境界部に形成される段差平坦部が前述した燃焼部1から熱伝導してくる熱の受部となる被加熱部側熱伝導部材着接部12となる構成とされており、この被加熱部側熱伝導部材着接部12は、図示するように、小径側の燃焼部形成孔5の開口部の周囲に沿設するように環状に形成されている構成とされている。 Further, in this embodiment, the step portion flat portion formed at the boundary portion where the inner diameter dimension of the combustion portion forming hole 5 is enlarged, that is, the boundary portion between the combustion gas flow gap portion 9 and the combustion gas guide portion 18 is described above. It is configured to be a heated portion side heat conduction member attachment/contact portion 12 which is a receiving portion of heat which is thermally conducted from the combustion portion 1. The heated portion side heat conduction member attachment/contact portion 12 is shown in the drawing. As described above, the structure is formed in an annular shape along the periphery of the opening of the combustion portion forming hole 5 on the small diameter side.

また、排気経路部16は、燃焼器本体部2の長さ方向(前後方向)を横断するように設けられていて、一端が前述した燃焼ガス流通空隙部9の筒状燃焼部形成部6基端部寄りに接続され、他端が燃焼器本体部2の後面部に設けられた排気口19に接続されている。即ち、本実施例は、この燃焼器本体部2を長さ方向に横断する排気経路部16を高温の燃焼ガスが流通することで、燃焼ガスと燃焼器本体部2とが熱交換し、燃焼器本体部2自体が燃焼ガスの熱により加熱される被加熱部4となる構成とされている。尚、排気経路部16の取り回し及び排気口19の配置は、本実施例に記載の構成に限定されるものでは無い。 Further, the exhaust passage portion 16 is provided so as to traverse the longitudinal direction (front-back direction) of the combustor body portion 2, and one end thereof has the cylindrical combustion portion forming portion 6 of the combustion gas flow gap portion 9 described above. It is connected to the end portion and the other end is connected to an exhaust port 19 provided on the rear surface of the combustor body 2. That is, in the present embodiment, the high temperature combustion gas flows through the exhaust passage portion 16 that crosses the combustor body portion 2 in the lengthwise direction, so that the combustion gas and the combustor body portion 2 exchange heat and burn. The container body 2 itself is a heated portion 4 that is heated by the heat of the combustion gas. The arrangement of the exhaust passage portion 16 and the arrangement of the exhaust port 19 are not limited to the configuration described in this embodiment.

また、この燃焼器本体部2に形成される燃焼部形成孔5に挿入配設されることで、この燃焼器本体部2内に燃焼部1を形成する筒状燃焼部形成部6は、円筒状に形成されており、先端部に渦流火炎の燃焼によってこの筒状燃焼部形成部6に付与された熱を被加熱部4となる燃焼器本体部2へ熱伝導するための熱伝導部となる燃焼部側熱伝導部材着接部11が設けられていて、基端部にこの筒状燃焼部形成部6を前述した燃焼部形成孔5に対して所定位置に配設するための位置決め用基板部20が設けられた構成とされている。 Further, the cylindrical combustion portion forming portion 6 that forms the combustion portion 1 inside the combustor body portion 2 by being inserted and disposed in the combustion portion forming hole 5 formed in the combustor body portion 2 is a cylinder. And a heat conducting portion for conducting heat to the combustor main body portion 2 which becomes the heated portion 4 at a tip portion thereof, which is applied to the tubular combustion portion forming portion 6 by the combustion of the eddy-current flame. A heat conducting member contacting portion 11 is provided for positioning for arranging the tubular combustion portion forming portion 6 at a base end portion at a predetermined position with respect to the combustion portion forming hole 5 described above. The substrate portion 20 is provided.

具体的には、本実施例の筒状燃焼部形成部6は、渦流火炎が形成されない渦流火炎非形成領域部8先端部側の周壁の厚さが基端部側に比べて薄く形成されていて(即ち内孔6Aの内径寸法は一定)、この厚さが異なる境界部の筒状燃焼部形成部6の外周面に段差部が形成されており、この段差部が前述した燃焼部側熱伝導部材着接部11となる構成とされており、この燃焼部側熱伝導部材着接部11は、前述した燃焼器本体部2に設けられた被加熱部側熱伝導部材着接部12と、熱伝導部材10が着接される着接面が面一状態となるように形成されている。 Specifically, in the tubular combustion portion forming portion 6 of the present embodiment, the thickness of the peripheral wall on the tip side of the vortex flame non-formation area portion 8 in which the vortex flame is not formed is thinner than that on the base end side. (That is, the inner diameter of the inner hole 6A is constant), a step portion is formed on the outer peripheral surface of the tubular combustion portion forming portion 6 at the boundary portion where the thicknesses differ, and this step portion causes the heat on the combustion portion side described above. The heat conducting member contacting portion 11 is configured as the heat conducting member contacting portion 11, and the heat conducting member contacting portion 11 on the combustion portion side is connected to the heat conducting member contacting portion 12 on the heated portion side provided on the combustor body 2. The contact surface with which the heat conductive member 10 is contacted is formed to be flush with each other.

即ち、本実施例は、この燃焼ガス流通空隙部9が介在する筒状燃焼部形成部6の渦流火炎非形成領域部8に形成される燃焼部側熱伝導部材着接部11と燃焼器本体部2に形成される被加熱部側熱伝導部材着接部12との間に熱伝導部材10が架設され、この熱伝導部材10により筒状燃焼部形成部6の渦流火炎非形成領域部8と燃焼器本体部2とが熱伝導可能に連結されている構成とされている。 That is, in the present embodiment, the combustion section side heat conduction member contact portion 11 and the combustor body formed in the vortex flame non-formation area portion 8 of the tubular combustion portion formation portion 6 in which the combustion gas flow gap portion 9 is interposed. A heat conducting member 10 is installed between the heat conducting member contacting portion 12 on the heated portion side formed in the portion 2, and the vortex flame non-forming area portion 8 of the tubular combustion portion forming portion 6 is provided by the heat conducting member 10. The combustor main body 2 and the combustor main body 2 are connected so as to be able to conduct heat.

また、位置決め用基板部20は、燃焼器本体部2の前面部と同形状に形成されていて、本実施例は、この位置決め用基板部20を燃焼器本体部2の前面部に重合配設することで、筒状燃焼部形成部6が燃焼部形成孔5の所定位置(燃焼部形成孔5の中心軸と筒状燃焼部形成部6の中心軸とが一致する状態)に配設され、この筒状燃焼部形成部6と前述した燃焼部形成孔5との間に燃焼ガス流通空隙部9と燃焼ガス誘導部18となる隙間が形成される構成とされている。尚、位置決め用基板部20と燃焼器本体部2との間に断熱部材を介在させる構成としても良い。 Further, the positioning substrate portion 20 is formed in the same shape as the front surface portion of the combustor body portion 2, and in the present embodiment, the positioning substrate portion 20 is superposed on the front surface portion of the combustor body portion 2. By doing so, the tubular combustion portion forming portion 6 is disposed at a predetermined position of the combustion portion forming hole 5 (a state where the central axis of the burning portion forming hole 5 and the central axis of the tubular combustion portion forming portion 6 coincide with each other). A gap serving as the combustion gas flow gap 9 and the combustion gas guide portion 18 is formed between the tubular combustion portion forming portion 6 and the above-described combustion portion forming hole 5. A heat insulating member may be interposed between the positioning substrate portion 20 and the combustor body portion 2.

また、前述した筒状燃焼部形成部6の渦流火炎非形成領域部8と燃焼器本体部2とを熱伝導可能に連結する熱伝導部材10は、図示するように、リング状に形成された平板部材(筒状燃焼部形成部6と同等若しくはこの筒状燃焼部形成部6よりも熱伝導率の高い部材)から成り、板面に燃焼ガスが通過する複数の燃焼ガス通過孔21が形成されている。 In addition, the heat conduction member 10 that connects the vortex flame non-formation region portion 8 of the tubular combustion portion formation portion 6 and the combustor body portion 2 described above so as to be able to conduct heat is formed in a ring shape as shown in the drawing. A plurality of combustion gas passage holes 21 through which combustion gas passes are formed on the plate surface, which are made of a flat plate member (a member having a thermal conductivity equal to or higher than that of the tubular combustion portion forming portion 6). Has been done.

即ち、本実施例の熱伝導部材10は、筒状燃焼部形成部6と燃焼器本体部2との間に介在する燃焼ガス流通空隙部9を跨るようにして、筒状燃焼部形成部6の燃焼部側熱伝導部材着接部11と、燃焼器本体部2の被加熱部側熱伝導部材着接部12とに架設状態に設けられ、板幅方向内側が筒状燃焼部形成部6の渦流火炎非形成領域部8に設けられた燃焼部側熱伝導部材着接部11に着接し、板幅方向外側が燃焼器本体部2に設けられた被加熱部側熱伝導部材着接部12に着接して、この筒状燃焼部形成部6の渦流火炎非形成領域部8と燃焼器本体部2との間を熱伝導可能に連結するとともに、燃焼ガス誘導部18に誘導された燃焼ガスが、この熱伝導部材10に設けられた燃焼ガス通過孔21を通じて燃焼ガス流通空隙部9へ導入されるように構成されている。 That is, the heat conducting member 10 of the present embodiment straddles the combustion gas flow gap 9 interposed between the tubular combustion portion forming portion 6 and the combustor body portion 2, so that the tubular combustion portion forming portion 6 is formed. Is provided in a state of being erected on the heat conducting member side contact portion 11 of the combustor portion and the heat conducting member contact portion 12 of the combustor body 2 on the heated portion side, and the tubular combustion portion forming portion 6 is formed on the inner side in the plate width direction. Of the swirl flame non-formation region 8 of the combustion part side heat conducting member contacting part 11 and the plate width direction outer side of the heated part side heat conducting member contacting part provided in the combustor body 2. The vortex flame non-formation region portion 8 of the tubular combustion portion forming portion 6 and the combustor body portion 2 are connected to each other so as to be able to conduct heat, and the combustion gas induced portion 18 is connected to the combustion gas guiding portion 18. The gas is configured to be introduced into the combustion gas flow gap portion 9 through the combustion gas passage hole 21 provided in the heat conducting member 10.

また、前述した筒状燃焼部形成部6内に燃料ガスを導入する燃料ガス導入部3は、燃焼器本体部2と同じ部材(アルミニウムやアルミニウム合金等の熱伝導率の高い金属部材)から成り、燃焼器本体部2及び筒状燃焼部形成部6と別体で構成されている。 Further, the fuel gas introduction part 3 for introducing the fuel gas into the tubular combustion part formation part 6 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). The burner main body 2 and the tubular combustion portion forming portion 6 are formed separately.

具体的には、本実施例の燃料ガス導入部3は、前述した筒状燃焼部形成部6の位置決め用基板部20と同形状の板状に形成され、この燃料ガス導入部3と筒状燃焼部形成部6(筒状燃焼部形成部6の位置決め用基板部20)との間の熱伝導を抑制するための導入部断熱部13を介して、筒状燃焼部形成部6(具体的には、筒状燃焼部形成部6の位置決め用基板部20)に重合配設される構成とされている。 Specifically, the fuel gas introducing portion 3 of the present embodiment is formed in a plate shape having the same shape as the positioning substrate portion 20 of the tubular combustion portion forming portion 6 described above. The tubular combustion portion forming portion 6 (specifically, through the introduction portion heat insulating portion 13 for suppressing heat conduction between the combustion portion forming portion 6 (the positioning substrate portion 20 of the tubular combustion portion forming portion 6)). In addition, it is configured to be superposed on the positioning substrate portion 20) of the tubular combustion portion forming portion 6.

より具体的には、燃料ガス導入部3は、板面中央部に、前後方向(板厚方向)に貫通し筒状燃焼部形成部6と連通する燃焼部連通孔22が形成されており、また、この燃焼部連通孔22内に燃料ガスを導入するための燃料ガス導入経路部23がこの燃焼部連通孔22の左右両側に設けられている。 More specifically, the fuel gas introduction part 3 is provided with a combustion part communication hole 22 which penetrates in the front-rear direction (plate thickness direction) and communicates with the cylindrical combustion part formation part 6 in the center part of the plate surface, Further, a fuel gas introduction path portion 23 for introducing a fuel gas into the combustion section communication hole 22 is provided on both left and right sides of the combustion section communication hole 22.

更に詳細に説明すると、この燃料ガス導入経路部23は、先端部に小径(数mm)の接線方向吹出口部24が設けられていて、この接線方向吹出口部24は、燃焼部連通孔22の内周面の接線方向に向けて燃料ガスを導入するように構成されている。即ち、本実施例は、この燃料ガス導入経路部23に設けられた接線方向吹出口部24から燃焼部連通孔22内に燃料ガスが導入されることで、燃焼部連通孔22内で燃料ガスが旋回流となって燃焼部1に向かって進み、そのまま、この燃焼部連通孔22と連通する燃焼部1内(具体的には、筒状燃焼部形成部6内)でも旋回流を保持するように構成されている。尚、本実施例では燃料ガス導入部3に導入される燃料ガスは、予め空気と可燃性ガスとが混合された予混合気とされている。 More specifically, the fuel gas introduction path portion 23 is provided with a tangential outlet port 24 having a small diameter (several mm) at the tip, and the tangential outlet port 24 is connected to the combustion portion communication hole 22. The fuel gas is introduced in the tangential direction of the inner peripheral surface of the. That is, in the present embodiment, the fuel gas is introduced into the combustion section communication hole 22 from the tangential blowout port section 24 provided in the fuel gas introduction path section 23, so that the fuel gas is generated in the combustion section communication hole 22. Becomes a swirl flow and advances toward the combustion section 1, and the swirl flow is maintained in the combustion section 1 that is in communication with the combustion section communication hole 22 (specifically, in the cylindrical combustion section formation section 6). Is configured. In the present embodiment, the fuel gas introduced into the fuel gas introducing section 3 is a premixed mixture of air and combustible gas.

この燃料ガス導入部3と前述した筒状燃焼部形成部6(具体的には、筒状燃焼部形成部6の位置決め用基板部20)との間に配設される導入部断熱部13は、筒状燃焼部形成部6の位置決め用基板部20及び燃料ガス導入部3の後面部(筒状燃焼部形成部6側の板面部)と同形状に形成された板状の断熱性部材若しくは低熱伝導性部材から成る構成とされている。 The introduction portion heat insulating portion 13 arranged between the fuel gas introduction portion 3 and the above-mentioned tubular combustion portion forming portion 6 (specifically, the positioning substrate portion 20 of the tubular combustion portion forming portion 6) is A plate-shaped heat insulating member formed in the same shape as the positioning substrate portion 20 of the tubular combustion portion forming portion 6 and the rear surface portion of the fuel gas introduction portion 3 (the plate surface portion on the tubular combustion portion forming portion 6 side), or It is composed of a low heat conductive member.

また、本実施例の本体部側閉塞板部14は、平板状に形成されており、燃焼器本体部2の後面部に重合配設されて、この燃焼器本体部2に形成された燃焼部形成孔5の後面部側開口部を閉塞するとともに、燃焼部1、具体的には、筒状燃焼部形成部6の燃焼ガス排出口17から排出された燃焼ガスの進行方向を燃焼ガス誘導部18へ向かうように折り返させる折り返し部として機能するように構成されている。即ち、本実施例は、筒状燃焼部形成部6の燃焼ガス排出口17から排出された燃焼ガスが、その進行方向に配設された本体部側閉塞板部14に衝突することで、その進路を180°折り返して燃焼ガス誘導部18に向い、この燃焼ガス誘導部18を通じて燃焼ガス流通空隙部9に導入されるように構成されている。 Further, the main body side closing plate portion 14 of the present embodiment is formed in a flat plate shape, and is superposed on the rear surface portion of the combustor main body portion 2 to form a combustion portion formed in the combustor main body portion 2. The opening of the rear surface portion side of the forming hole 5 is closed and the advancing direction of the combustion gas discharged from the combustion portion 1, specifically, the combustion gas outlet 17 of the tubular combustion portion forming portion 6 is changed to the combustion gas guiding portion. It is configured to function as a turn-back portion that turns back toward 18. That is, in the present embodiment, the combustion gas discharged from the combustion gas discharge port 17 of the tubular combustion portion forming portion 6 collides with the main body side closing plate portion 14 arranged in the traveling direction, The path is turned back by 180° to face the combustion gas guide portion 18, and is introduced into the combustion gas flow gap 9 through the combustion gas guide portion 18.

また、本実施例の本体部側閉塞板部14は、板面中央部に耐熱ガラス等の耐熱性透明部材から成る渦流火炎視認部25が設けられていて、この渦流火炎視認部25から燃焼部1内に形成される渦流火炎の燃焼状態を目視にて確認できるように構成されている。尚、この本体部側閉塞板部14は、渦流火炎視認部25を設けない単なる板状部材とした構成でも良い。また、本実施例は、燃焼器本体部2の燃焼部形成孔5が貫通孔として形成されていることから、前述した本体部側閉塞板部14を用いて燃焼部形成孔5の開口部が閉塞される構成とされているが、燃焼部形成孔5を貫通孔とせずに有底孔として形成して、この燃焼部形成孔5の底部を本体部側閉塞板部14とすることで本体部側閉塞板部14を別体で設けない構成としても良い。 Further, the main body portion side closing plate portion 14 of the present embodiment is provided with an eddy-current flame visualizing portion 25 made of a heat-resistant transparent member such as heat-resistant glass in the central portion of the plate surface, and from the eddy-current flame visualizing portion 25 to the combustion portion. It is configured so that the combustion state of the vortex flame formed in 1 can be visually confirmed. The main body side closing plate part 14 may be a simple plate-like member without the vortex flame visual recognition part 25. Further, in this embodiment, since the combustion portion forming hole 5 of the combustor body portion 2 is formed as a through hole, the opening portion of the combustion portion forming hole 5 is formed by using the body portion side closing plate portion 14 described above. Although it is configured to be closed, the combustion portion forming hole 5 is formed as a bottomed hole instead of a through hole, and the bottom portion of the combustion portion forming hole 5 serves as a main body side closing plate portion 14 The part side blocking plate part 14 may not be provided separately.

また、本実施例のガス導入部側閉塞板部15は、本体部側閉塞板部14と同様、平板状に形成されており、燃料ガス導入部3に重合配設されて、この燃料ガス導入部3に形成された燃焼部連通孔22の基端側開口部を閉塞するように構成され、また、板面中央部に耐熱ガラス等の耐熱性透明部材から成る渦流火炎視認部25が設けられていて、この渦流火炎視認部25から燃焼部1内に形成される渦流火炎の燃焼状態を目視にて確認できるように構成されている。尚、このガス導入部側閉塞板部15も、前述した本体部側閉塞板部14同様、渦流火炎視認部25を設けない単なる板状部材とした構成でも良い。 Further, the gas introducing portion side closing plate portion 15 of the present embodiment is formed in a flat plate shape like the main body portion side closing plate portion 14, and is superposed on the fuel gas introducing portion 3 so as to overlap with the fuel gas introducing portion 3. It is configured to close the base end side opening of the combustion part communication hole 22 formed in the part 3, and the vortex flame visualizing part 25 made of a heat resistant transparent member such as heat resistant glass is provided in the central part of the plate surface. However, the combustion state of the vortex flame formed in the combustion unit 1 can be visually confirmed from the vortex flame visual recognition unit 25. It should be noted that, like the main body part side closing plate part 14 described above, the gas introducing part side closing plate part 15 may be a simple plate-like member without the eddy flame visual recognition part 25.

また、本実施例は、燃料ガス導入部3の燃焼部連通孔22が貫通孔として形成されていることから、前述したガス導入部側閉塞板部15を用いて燃焼部連通孔22の開口部が閉塞される構成とされているが、前述した本体部側閉塞板部14同様、燃焼部連通孔22を貫通孔とせずに有底孔として形成して、この燃焼部連通孔22の底部をガス導入部側閉塞板部15とすることで、ガス導入部側閉塞板部15を別体で設けない構成としても良い。 Further, in this embodiment, since the combustion section communication hole 22 of the fuel gas introduction section 3 is formed as a through hole, the opening section of the combustion section communication hole 22 is formed by using the gas introduction section side closing plate section 15 described above. However, similar to the main body side closing plate portion 14 described above, the combustion portion communication hole 22 is formed as a bottomed hole instead of a through hole, and the bottom portion of this combustion portion communication hole 22 is formed. By using the gas introducing part side closing plate part 15, the gas introducing part side closing plate part 15 may not be provided separately.

上述のように構成した本実施例の作用・効果について以下に説明する。 The operation and effect of this embodiment configured as described above will be described below.

本実施例は、燃料供給部から供給される燃料ガス(予混合気)が燃料ガス導入部3を介して燃焼部1、具体的には、燃焼部1を形成する筒状燃焼部形成部6へ導入され、この筒状燃焼部形成部6に導入された燃料ガスは、旋回流状態で導入され、この旋回流状態の燃料ガスに着火することで筒状燃焼部形成部6内に渦流火炎が形成される。 In the present embodiment, the fuel gas (premixed gas) supplied from the fuel supply unit passes through the fuel gas introduction unit 3 to form the combustion unit 1, specifically, the tubular combustion unit formation unit 6 that forms the combustion unit 1. The fuel gas introduced into the tubular combustion portion forming portion 6 is introduced in a swirling flow state, and the fuel gas in the swirling flow state is ignited to swirl the flame in the tubular combustion portion forming portion 6. Is formed.

筒状燃焼部形成部6において、この渦流火炎が形成される渦流火炎形成領域部7は、燃焼ガス流通空隙部9で囲繞されているので、この燃焼ガス流通空隙部9により筒状燃焼部形成部6内で形成される渦流火炎の熱がこの筒状燃焼部形成部6の外(例えば燃焼器本体部2や燃料ガス導入部3など)へ熱伝導されることが抑制され、これにより、渦流火炎の火炎温度の低下が抑制されて、渦流火炎の高温状態が維持されることで燃焼反応が促進され、不完全燃焼が低減されることとなり、一酸化炭素の発生が抑制されるとともに、発熱ロスが低減されて、渦流火炎の燃焼による発熱量が向上する。 In the tubular combustion portion forming portion 6, the vortex flame forming area portion 7 in which the vortex flame is formed is surrounded by the combustion gas flow gap portion 9, so that the combustion gas flow gap portion 9 forms the tubular combustion portion. The heat of the vortex flame formed in the portion 6 is suppressed from being conducted to the outside of the tubular combustion portion forming portion 6 (for example, the combustor body portion 2, the fuel gas introducing portion 3 and the like). The decrease in flame temperature of the vortex flame is suppressed, the combustion reaction is promoted by maintaining the high temperature state of the vortex flame, incomplete combustion is reduced, and the generation of carbon monoxide is suppressed, The heat loss is reduced and the amount of heat generated by the combustion of the vortex flame is improved.

そして、この渦流火炎の燃焼によって生じた熱(渦流火炎の熱および渦流火炎の燃焼によって生じた燃焼ガスの熱)が、渦流火炎が形成されない渦流火炎非形成領域部8から熱伝導部材10を通じて熱伝導可能に連結されている被加熱部4としての燃焼器本体部2に熱伝導して、燃焼器本体部2を積極的に加熱することで、この燃焼器本体部2がこの筒状燃焼部形成部6からの熱伝導と、排気経路部16を流通する燃焼ガスからの熱伝導により効率良く加熱されることとなる。 The heat generated by the combustion of the vortex flame (the heat of the vortex flame and the heat of the combustion gas generated by the combustion of the vortex flame) is transferred from the vortex flame non-formation region 8 where the vortex flame is not formed to the heat conduction member 10. By conducting heat to the combustor body portion 2 as the heated portion 4 that is conductively connected to positively heat the combustor body portion 2, the combustor body portion 2 becomes the tubular combustion portion. The heat is efficiently heated by the heat conduction from the forming portion 6 and the heat conduction from the combustion gas flowing through the exhaust passage portion 16.

即ち、本実施例は、筒状燃焼部形成部6内で形成される渦流火炎の熱がこの筒状燃焼部形成部6の外部に熱伝導する際は、渦流火炎の燃焼に影響しにくい、渦流火炎が形成されない渦流火炎非形成領域部8で行われるから、この渦流火炎の燃焼によって生じた熱を被加熱部4である燃焼器本体部2へ熱伝導させても、渦流火炎の温度を殆ど低下させることがなく、しかも、渦流火炎の燃焼によって生じた熱を、筒状燃焼部形成部6の渦流火炎非形成領域部8から燃焼器本体部2へ熱伝導させることで、筒状燃焼部形成部6の過剰加熱も抑制されることとなり、これにより筒状燃焼部形成部6の高温劣化による損傷の虞が可及的に低減され、筒状燃焼部形成部6の高寿命化が図れるとともに、本小型渦流燃焼器の信頼性も向上することとなる。 That is, in the present embodiment, when the heat of the vortex flame formed in the tubular combustion portion forming portion 6 is conducted to the outside of the tubular combustion portion forming portion 6, the combustion of the vortex flame is less likely to be affected. Since the vortex flame is not formed in the vortex flame non-formation region 8, the vortex flame is not heated even if the heat generated by the combustion of the vortex flame is transferred to the combustor body 2 which is the heated portion 4. The heat generated by the combustion of the vortex flame is hardly transferred, and the heat generated by the combustion of the vortex flame is transferred from the vortex flame non-formation region portion 8 of the tubular combustion portion forming portion 6 to the combustor body portion 2. Excessive heating of the portion forming portion 6 is also suppressed, whereby the risk of damage due to high temperature deterioration of the tubular combustion portion forming portion 6 is reduced as much as possible, and the life of the tubular combustion portion forming portion 6 is extended. In addition, the reliability of the small vortex combustor is improved.

このように、本実施例は、筒状燃焼部形成部6(燃焼部1)内に形成される渦流火炎の火炎温度の低下が抑制され、火炎温度上昇(火炎温度の高温状態の維持)による燃焼反応の促進により不完全燃焼が低減されるとともに、渦流火炎の燃焼によって生じた熱が積極的に燃焼器本体部2に熱伝導されて、燃焼ガスによる加熱とともにこの燃焼器本体部2が効率的に加熱され、燃焼熱を有効的に利用する発熱体として用いることができ、しかも、筒状燃焼部形成部6の高温劣化による損傷の虞も無く安心して使用できる安全性且つ実用性に優れた画期的な小型渦流燃焼器となる。 As described above, in this embodiment, the decrease in the flame temperature of the vortex flame formed in the tubular combustion portion forming portion 6 (combustion portion 1) is suppressed, and the flame temperature rises (maintains the high temperature state of the flame temperature). The incomplete combustion is reduced by promoting the combustion reaction, and the heat generated by the combustion of the vortex flame is positively conducted to the combustor main body 2, and the combustion gas is efficiently heated by the combustion gas. It can be used as a heating element that is effectively heated and effectively uses combustion heat. Moreover, it is safe and practical that there is no risk of damage due to high temperature deterioration of the tubular combustion part forming part 6 and that it is safe and practical. It becomes a revolutionary small vortex combustor.

本発明の具体的な実施例2について図6に基づいて説明する。 A second specific example of the present invention will be described with reference to FIG.

本実施例は、実施例1において、火炎温度保持部9を燃焼ガスが流通しない空隙部9に構成した場合であり、具体的には、排気経路部16の構造(取り回し)が実施例1と異なる構成とされている。 This embodiment is a case in which the flame temperature holding portion 9 is configured in the void portion 9 through which the combustion gas does not flow in the first embodiment, and specifically, the structure (routing) of the exhaust passage portion 16 is the same as that of the first embodiment. It has a different configuration.

より具体的には、本実施例は、排気経路部16が、燃焼器本体部2の後面部側から前面部側に向かって、この燃焼器本体部2を横断するように設けられていて、一端が燃焼ガス誘導部18に接続され、他端が燃焼器本体部2の側面部に形成された排気口19に接続されている。 More specifically, in the present embodiment, the exhaust path portion 16 is provided so as to cross the combustor body portion 2 from the rear surface side to the front surface side of the combustor body portion 2, One end is connected to the combustion gas guide portion 18, and the other end is connected to the exhaust port 19 formed in the side surface portion of the combustor body portion 2.

即ち、実施例1は、燃焼部1(筒状燃焼部形成部6)から排出された燃焼ガスが本体部側閉塞板部14(渦流火炎視認部25)に衝突して進行方向を折り返して燃焼ガス誘導部18に向かい、この燃焼ガス誘導部18を通じて火炎温度保持部9としての燃焼ガス流通空隙部9に導入され、この燃焼ガス流通空隙部9を流通した後、排気経路部16を流通して排気口19より外部に排出される構成であるのに対し、本実施例は、燃焼部1(筒状燃焼部形成部6)から排出された燃焼ガスが本体部側閉塞板部14(渦流火炎視認部25)に衝突して進行方向を折り返して燃焼ガス誘導部18に向かい、この燃焼ガス誘導部18から排気経路部16に導入されて、この排気経路部16を流通して排気口19より外部に排出される構成とされている。その余の構成は実施例1と同様である。 That is, in Example 1, the combustion gas discharged from the combustion section 1 (cylindrical combustion section formation section 6) collides with the main body side closing plate section 14 (vortex flame visual recognition section 25) and the traveling direction is turned back and burned. To the gas guide portion 18, the combustion gas guide portion 18 is introduced into the combustion gas flow gap portion 9 as the flame temperature holding portion 9, and after flowing through the combustion gas flow gap portion 9, the exhaust gas passage portion 16 is passed through. In this embodiment, the combustion gas discharged from the combustion section 1 (cylindrical combustion section forming section 6) is discharged from the exhaust port 19 to the outside. It collides with the flame visual recognition part 25) and turns its traveling direction toward the combustion gas guiding part 18, is introduced from this combustion gas guiding part 18 into the exhaust path part 16, and flows through this exhaust path part 16 and the exhaust port 19 It is configured to be discharged to the outside more. The rest of the configuration is similar to that of the first embodiment.

本発明の具体的な実施例3について図7に基づいて説明する。 A specific third embodiment of the present invention will be described with reference to FIG.

本実施例は、実施例1において、燃焼器本体部2が被加熱部4とされず、燃焼器本体部2と別体に設けられる接続被加熱部4Aが被加熱部4とされる場合である。 In this embodiment, the combustor body 2 is not the heated portion 4 in the first embodiment, and the connected heated portion 4A provided separately from the combustor body 2 is the heated portion 4. is there.

具体的には、本実施例の燃焼器本体部2は、後述する筒状燃焼部形成部6が貫通配設される燃焼部形成孔5が形成される構成とし、排気経路部や排気口は設けられていない。 Specifically, the combustor body portion 2 of the present embodiment is configured to have a combustion portion forming hole 5 through which a cylindrical combustion portion forming portion 6 described later is formed, and the exhaust passage portion and the exhaust port are Not provided.

また、筒状燃焼部形成部6は、燃焼器本体部2の前後方向の長さよりも長い寸法に設定されていて、前述した燃焼部形成孔5に挿入配設された際、先端部がこの燃焼部形成孔5を貫通して燃焼器本体部2から突出するように構成されている。 Further, the tubular combustion portion forming portion 6 is set to have a dimension longer than the length of the combustor body portion 2 in the front-rear direction, and when the tubular combustion portion forming portion 6 is inserted and arranged in the combustion portion forming hole 5 described above, the tip portion thereof is It is configured to penetrate the combustion portion forming hole 5 and project from the combustor body portion 2.

また、被加熱部4となる接続被加熱部4Aは、燃焼器本体部2の後面部に開口する燃焼部形成孔5の後面部側開口部と連通する本体側接続開口部26を有する箱状に形成され、熱伝導部材10が着設する被加熱部側熱伝導部材着接部12と、導入した燃焼ガスが排出される排気口19が設けられた構成とされている。 The connected heated portion 4A that becomes the heated portion 4 has a box-like shape having a main body side connection opening 26 that communicates with the rear surface side opening of the combustion portion forming hole 5 that opens to the rear surface of the combustor main body 2. The heat conducting member 10 is attached to the heated portion side heat conducting member attaching/detaching portion 12 and the exhaust port 19 for discharging the introduced combustion gas is provided.

即ち、本実施例は、図7に示すように、燃焼器本体部2の後面部に被加熱部4となる接続被加熱部4Aが接続されていて、この接続被加熱部4A内に、燃焼器本体部2の燃焼部形成孔5に挿通配設され、この燃焼部形成孔5を貫通した筒状燃焼部形成部6の先端部が挿通配設され、この接続被加熱部4A内に挿通配設された筒状燃焼部形成部6の先端部(渦流火炎非形成領域部8)に設けられた燃焼部側熱伝導部材着接部11と、接続被加熱部4Aに設けられた被加熱部側熱伝導部材着接部12とが熱伝導部材10で熱伝導可能に連結されている構成とされている。その余の構成は実施例1と同様である。 That is, in the present embodiment, as shown in FIG. 7, the connected heated portion 4A which is the heated portion 4 is connected to the rear surface of the combustor body portion 2, and the combustion is performed in the connected heated portion 4A. The burner portion forming hole 5 of the main body 2 is inserted through the burner portion forming hole 5, and the tip end of the tubular burner portion forming portion 6 that penetrates through the burner portion forming hole 5 is inserted through and inserted into the connected heated portion 4A. Combustion section side heat conduction member contacting section 11 provided at the tip of the cylindrical combustion section forming section 6 (vortex flame non-formation area section 8) and the heating target provided in the connection heated section 4A. The heat conducting member attaching/detaching portion 12 is connected by the heat conducting member 10 so that heat can be conducted. The rest of the configuration is similar to that of the first embodiment.

尚、本発明は、実施例1〜3に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。 It should be noted that the present invention is not limited to the first to third embodiments, and the specific constitution of each constituent element can be designed as appropriate.

1 燃焼部
2 燃焼器本体部
3 燃料ガス導入部
4 被加熱部
5 燃焼部形成孔
6 筒状燃焼部形成部
7 渦流火炎形成領域部
8 渦流火炎非形成領域部
9 火炎温度保持部
10 熱伝導部材
11 燃焼部側熱伝導部材着接部
12 被加熱部側熱伝導部材着接部
13 導入部断熱部
21 燃焼ガス通過孔
DESCRIPTION OF SYMBOLS 1 Combustion part 2 Combustor body part 3 Fuel gas introduction part 4 Heated part 5 Combustion part formation hole 6 Cylindrical combustion part formation part 7 Eddy current flame formation area part 8 Eddy current flame non-formation area part 9 Flame temperature holding part
10 Heat conduction member
11 Combustion part side heat conduction member contact part
12 Heated part side heat conductive member contact part
13 Introductory section Thermal insulation section
21 Combustion gas passage hole

Claims (5)

内部に筒状の燃焼部を有する燃焼器本体部と、前記燃焼部の内面の接線方向に向けて燃料ガスを導入する燃料ガス導入部とから成り、前記燃料ガス導入部から前記燃焼部内に燃料ガスが導入されることで、この燃料ガスが前記燃焼部内で旋回流になって該燃焼部内に渦流火炎が形成され、この渦流火炎の熱若しくは前記渦流火炎の燃焼によって生じた燃焼ガスの熱により被加熱部が加熱されるように構成された小型渦流燃焼器であって、前記燃焼部は、前記熱により加熱される前記被加熱部となる前記燃焼器本体部に形成された燃焼部形成孔に、前記燃焼器本体部と別体の筒状燃焼部形成部が配設されてなる構成とされ前記筒状燃焼部形成部は、燃焼時に渦流火炎が形成される渦流火炎形成領域部と前記渦流火炎が形成されない渦流火炎非形成領域部とが生じる構成とされると共に、これら渦流火炎形成領域部及び渦流火炎非形成領域部が該渦流火炎形成領域部で形成される渦流火炎の火炎温度の低下を抑制する火炎温度保持部で囲繞され、且つ前記渦流火炎非形成領域部が熱伝導部材を介して前記被加熱部となる前記燃焼器本体部と熱伝導可能に連結されており、前記熱伝導部材は、平板状に形成され、前記火炎温度保持部を挟んで並設される前記渦流火炎非形成領域部に設けられる燃焼部側熱伝導部材着接部と、前記燃焼器本体部に設けられる被加熱部側熱伝導部材着接部とに架設状態に設けられていることを特徴とする小型渦流燃焼器。 A combustor body having a tubular combustion section inside, and a fuel gas introduction section for introducing fuel gas toward the tangential direction of the inner surface of the combustion section, the fuel being introduced into the combustion section from the fuel gas introduction section. When the gas is introduced, the fuel gas turns into a swirl flow in the combustion section to form a vortex flame in the combustion section, and the heat of the vortex flame or the heat of the combustion gas generated by the combustion of the vortex flame is generated. A small eddy combustor configured to heat a heated portion, the combustion portion being a combustion portion forming hole formed in the combustor body portion to be the heated portion heated by the heat. to the is configured to cylindrical combustion portion forming part of the combustor main body and the separate body is disposed, said tubular combustion portion forming portion includes a swirl flame formation region portion vortex flame is formed during combustion while being configured to the vortex flame non-forming region part where the vortex flame is not formed is generated, the flame temperature of the vortex flame these vortex flame formation region portion and the vortex flame formed area portion is formed by the vortex flow flame formation region portion Is surrounded by a flame temperature holding portion that suppresses a decrease in temperature, and the vortex flame non-formation area portion is thermally conductively connected to the combustor main body portion serving as the heated portion via a heat conduction member , The heat conduction member is formed in a flat plate shape, and on the combustion unit side heat conduction member attachment/detachment portion provided in the vortex flame non-formation region portion that is arranged in parallel with the flame temperature holding portion sandwiched between the heat conduction member and the combustor body portion. small vortex combustor, characterized in that is provided, et al is the erection state and the heating unit side heat conductive member bonding contact portions provided. 前記燃焼部形成孔は、この燃焼部形成孔に挿入される前記筒状燃焼部形成部の前記渦流火炎非形成領域部が生じる先端部側の内径寸法が、前記渦流火炎形成領域部が生じる基端部側の内径寸法よりも拡径されていて、この内径寸法が拡径される境界部に形成される段差平坦部を前記被加熱部側熱伝導部材着接部とする構成とされていることを特徴とする請求項1記載の小型渦流燃焼器 The combustion portion forming hole is such that the inner diameter of the tubular combustion portion forming portion inserted into the combustion portion forming hole at the tip end side where the vortex flame non-forming area portion is formed is the base where the vortex flame forming area portion is formed. The inner diameter of the end portion side is expanded, and the stepped flat portion formed at the boundary where the inner diameter is expanded is used as the heated portion side heat conduction member contact portion. The small swirl combustor according to claim 1, characterized in that . 前記筒状燃焼部形成部は、前記渦流火炎非形成領域部が生じる先端部側の周壁の厚さが、前記渦流火炎形成領域部が生じる基端部側に比べて薄く形成されていて、この厚さが薄くなる境界部に形成される段差部を前記燃焼部側熱伝導部材着接部とする構成とされていることを特徴とする請求項1,2のいずれか1項に記載の小型渦流燃焼器 In the tubular combustion portion forming portion, the thickness of the peripheral wall on the tip end side where the vortex flame non-forming area portion is formed is formed thinner than that on the base end side where the vortex flame forming area portion is formed. The small step according to any one of claims 1 and 2, wherein a step portion formed at a boundary portion where the thickness becomes thin is configured to be the combustion portion side heat conduction member contact portion. Vortex combustor . 前記熱伝導部材は、複数の燃焼ガス通過孔が形成されていることを特徴とする請求項1〜3のいずれか1項に記載の小型渦流燃焼器。The small eddy combustor according to claim 1, wherein the heat conduction member has a plurality of combustion gas passage holes formed therein. 前記燃焼部と前記燃料ガス導入部との間に、この燃焼部と前記燃料ガス導入部との間の熱伝導を抑制する導入部断熱部が設けられていることを特徴とする求項1〜4のいずれか1項に記載の小型渦流燃焼器。 Between the combustion section and the fuel gas introduction section, an introduction section heat insulation section for suppressing heat conduction between the combustion section and the fuel gas introduction section is provided. 4. The small eddy combustor according to any one of 4 above.
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