JPS62126252A - Stirling engine - Google Patents

Stirling engine

Info

Publication number
JPS62126252A
JPS62126252A JP26403785A JP26403785A JPS62126252A JP S62126252 A JPS62126252 A JP S62126252A JP 26403785 A JP26403785 A JP 26403785A JP 26403785 A JP26403785 A JP 26403785A JP S62126252 A JPS62126252 A JP S62126252A
Authority
JP
Japan
Prior art keywords
heater
heat
insulating material
stirling engine
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP26403785A
Other languages
Japanese (ja)
Inventor
Tatsuo Fujita
龍夫 藤田
Kinichi Adachi
足立　欣一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP26403785A priority Critical patent/JPS62126252A/en
Publication of JPS62126252A publication Critical patent/JPS62126252A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/053—Component parts or details
    • F02G1/055—Heaters or coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2258/00—Materials used
    • F02G2258/10—Materials used ceramic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

PURPOSE:To enable heater tubes to be heated efficiently and uniformly by the additional use of the radiant heat by providing, on the circumference of the heater tubes, the surrounding wall of the combustion chamber at a certain distance from the heater tubes, and then permitting the wall to be made up of a heat insulating material which is of a white color having a low absorption coefficient. CONSTITUTION:In the combustion chamber 15 of a stirling engine is arranged a large number of heater tubes 17, which are heated by the heat of a burner 11. On the circumference of the heater tubes 17 is arranged a surrounding wall 20, made up of a heat insulating material, which is of a white color having a low heat-absorption coefficient. For the insulating material of a white color, ceramics, such as alumina, cordierite, cerment and the like, and uniformly by virtue of the radiant heat.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、スターリングエンジンに関スるモノである。[Detailed description of the invention] Industrial applications The present invention relates to a Stirling engine.

従来の技術 スターリングエンジンは、元来、外燃機関であるだめに
、多種多様の燃料が使用されているが、熱効率の優位性
から燃料として、ガスや石油を用いるものが主流であり
、燃焼器、空気予熱器、加熱器を含む外燃部分は、例え
ば、特開昭５８−１２２３４３号公報に示されているよ
うに第２図のような構造になっていた。Conventional technology The Stirling engine is originally an external combustion engine, so a wide variety of fuels are used.However, due to their superior thermal efficiency, most engines use gas or oil as fuel, and the combustor The external combustion section including the air preheater, air preheater, and heater had a structure as shown in FIG. 2, for example, as shown in Japanese Patent Application Laid-Open No. 58-122343.

すなわち、燃料はノズル１より燃焼室２に流入し、これ
に対し燃焼用空気は燃焼用空気通路３を通り、空気予熱
器４を経てスヮーラ６がら燃焼室２に流れこむ。そして
、燃焼室２で燃焼した後燃焼ガスはスターリングエンジ
ンの加熱器８に熱を与え、空気予熱器４を経て排ガス通
路７がら外部に排出される。一方、エンジンは加熱器６
に熱を与えられ、ディスプレーサ８の往復運動に伴ない
作動するようになっていた。That is, fuel flows into the combustion chamber 2 from the nozzle 1, whereas combustion air passes through the combustion air passage 3, passes through the air preheater 4, and flows into the combustion chamber 2 through the swirler 6. After being burned in the combustion chamber 2, the combustion gas gives heat to the heater 8 of the Stirling engine, passes through the air preheater 4, and is discharged to the outside through the exhaust gas passage 7. On the other hand, the engine is heated by heater 6.
heat is applied to the displacer 8, and the displacer 8 operates as the displacer 8 reciprocates.

発明が解決しようとする問題点 ところが、このような形式では、燃焼ガスによる燃焼熱
をスターリングエンジンの加熱器６に均一に与えにくい
という問題点があった。特に燃焼空間が大きく、加熱器
６までの距離も離れているため、燃焼ガス温度の低下に
伴ない加熱効率も減少しており、また、温度分布もかな
りばらついていた。従って、加熱器６．空気予熱器４．
燃焼器を含む外燃部分の効率である外燃効率の向上が困
難であった。加熱器６に入熱できなかった排熱は空気予
熱器４で回収されるが、この排熱回収率を著しく高めよ
うとすると空気予熱器４が大きくなるだけでなく、放熱
損失も増えるため加熱器６内へ効率良く熱を与えること
が望ましいわけである。Problems to be Solved by the Invention However, in this type of system, there is a problem in that it is difficult to uniformly apply combustion heat from the combustion gas to the heater 6 of the Stirling engine. In particular, since the combustion space is large and the distance to the heater 6 is long, the heating efficiency decreases as the combustion gas temperature decreases, and the temperature distribution also varies considerably. Therefore, heater 6. Air preheater4.
It has been difficult to improve the external combustion efficiency, which is the efficiency of the external combustion part including the combustor. The waste heat that could not be input to the heater 6 is recovered by the air preheater 4, but if you try to significantly increase the waste heat recovery rate, not only will the air preheater 4 become larger, but the heat radiation loss will also increase. It is desirable to efficiently apply heat to the inside of the container 6.

さらに温度分布が大きいと加熱器６を局部的に過熱する
危険性も高く、寿命の点でも難点があった。Furthermore, if the temperature distribution is large, there is a high risk of locally overheating the heater 6, which poses a problem in terms of service life.

問題点を解決するだめの手段 本発明は、従来の問題点を解決するために、複数の細管
で形成された加熱器を取り囲むように、吸収率の低い白
色系統の断熱材を設置する構成としたものである。Means to Solve the Problems In order to solve the problems of the conventional art, the present invention has a structure in which a white heat insulating material with low absorption rate is installed so as to surround a heater formed of a plurality of thin tubes. This is what I did.

作用 このように、吸収率の低い白色系統の断熱材全加熱器の
まわりに設置することにより、燃焼ガスが持つ輻射能を
、この断熱材で反射し、加熱器に与えることができるた
め対流だけでなく、輻射の効果も加わり、加熱効率を向
上させることができる。しかも、輻射を利用しているた
め、温度分布の均一化も達成しやすくなっている。Effect: By installing a low-absorption white insulation material around the entire heater, the radiation of the combustion gas can be reflected by this insulation material and applied to the heater, so only convection can occur. In addition, the heating efficiency can be improved by adding the effect of radiation. Furthermore, since radiation is used, it is easier to achieve uniform temperature distribution.

実施例 以下、図面を用いて具体的説明を行なう。Example A specific explanation will be given below with reference to the drawings.

第１図は本発明の一実施例のスターリングエンジンの構
成図であり、燃料としてガスを対象としている。第１図
においてガス系統は、ガス供給パイプ９．ガス制御弁１
０．ガス噴出孔１１から成り、燃焼用空気系統は燃焼用
空気通路１２．空気予熱器１３．空気噴出孔１４から形
成されており、ガスと空気を混合、及び燃焼させる燃焼
室１５が設けられている。燃焼室１６内には着火のため
の点火プラグ１６及び、加熱器１７が設けられており、
この加熱器１７には再生器１８．冷却器１９が一連接さ
れている。加熱器１７は複数の細管で構成しており、こ
れを取り囲むように周囲に吸収率の低い白色系統の断熱
材２ｏを設置している。この断熱材２ｏは、高温に耐え
ることができるだけでなく、燃焼ガスが持つ輻射能を反
射し、加熱器１７を輻射の効果により効率良く加熱でき
るように白色系統のものを用いている。さらに、輻射効
率を高められるように、加熱器１７と断熱材２゜のクリ
アランスは、２Ｏｆｆ以内とするのが望ましい。また、
この白色系統の断熱材２０の表面に複数のくぼみを設け
ることにより、一層、輻射効率を向上できる。FIG. 1 is a block diagram of a Stirling engine according to an embodiment of the present invention, which uses gas as fuel. In FIG. 1, the gas system includes gas supply pipe 9. Gas control valve 1
0. The combustion air system includes a combustion air passage 12. Air preheater13. A combustion chamber 15 is provided which is formed from air jet holes 14 and mixes and burns gas and air. A spark plug 16 for ignition and a heater 17 are provided in the combustion chamber 16.
This heater 17 includes a regenerator 18. A series of coolers 19 are connected. The heater 17 is composed of a plurality of thin tubes, and a white heat insulating material 2o with a low absorption rate is installed around the tubes. The heat insulating material 2o is of a white color so that it can not only withstand high temperatures but also reflect the radiation of the combustion gas and efficiently heat the heater 17 by the radiation effect. Further, in order to increase the radiation efficiency, it is desirable that the clearance between the heater 17 and the heat insulating material 2° be within 2Off. Also,
By providing a plurality of depressions on the surface of the white heat insulating material 20, the radiation efficiency can be further improved.

白色系統の断熱材２０の材料としては、アルミナ（ム（
１２０ｓＬコージライト（２Ｍｇ０．２人ｌ　２０　、
　、１５ｓｉｏ□）。The material for the white heat insulating material 20 is alumina (mu).
120sL cordierite (2Mg0.2 people l 20,
, 15sio□).

サーメット等のセラミックが適している。Ceramics such as cermet are suitable.

一方、エンジン内にはディスプレーサ２１があり、熱交
換後の排ガスの流路として排ガス通路２２が設けられて
いる。On the other hand, there is a displacer 21 inside the engine, and an exhaust gas passage 22 is provided as a flow path for exhaust gas after heat exchange.

燃料であるガスはガス供給パイプ９．ガス制御弁１０を
通り、ガス噴出孔１１から燃焼室１６に流入し、これに
対し燃焼用空気は燃焼用空気通路１２、空気予熱器１３
を通り、空気噴出孔１４から燃焼室１６に流れ込む。そ
して燃焼室１６で混合され、点火プラグ１６により着火
、燃焼した後、燃焼ガスはスターリングエンジンの加熱
器１７に熱を与え、空気予熱器１３で排熱回収を行ない
、排ガス通路２２を通り外部に排出される。ここで燃焼
ガスが加熱器１７に熱を与える際、必然的にガス噴出孔
１１から遠ざかるにつれ燃焼ガス温度が低下し、温度分
布が生じるが本実施例では、加熱器１７の周囲に白色系
統の断熱材２０を設置しているため、燃焼ガスが持つ輻
射能を反射し、加熱器１７を輻射の効果により効率良く
均一に加熱できるようになっている。つまり、加熱器１
７に対し対流だけでなく、輻射の効果を加えて、優れた
熱伝達特性を得るようになるのである。また、断熱材２
０であるため、燃焼ガスが持つ熱を従来のように、熱伝
導により空気予熱器１３に逃がすこともないため、空気
予熱器が大きくなり、放熱損失が増大することもない。Gas, which is fuel, is supplied through the gas supply pipe9. It passes through the gas control valve 10 and flows into the combustion chamber 16 from the gas injection hole 11, whereas the combustion air flows through the combustion air passage 12 and the air preheater 13.
, and flows into the combustion chamber 16 from the air jet hole 14 . After being mixed in the combustion chamber 16, ignited and combusted by the spark plug 16, the combustion gas gives heat to the heater 17 of the Stirling engine, recovers exhaust heat in the air preheater 13, and passes through the exhaust gas passage 22 to the outside. be discharged. Here, when the combustion gas gives heat to the heater 17, the temperature of the combustion gas inevitably decreases as it moves away from the gas nozzle 11, and a temperature distribution occurs. Since the heat insulating material 20 is provided, the radiation of the combustion gas is reflected, and the heater 17 can be efficiently and uniformly heated by the radiation effect. In other words, heater 1
By adding not only the effect of convection but also the effect of radiation to 7, excellent heat transfer characteristics can be obtained. In addition, insulation material 2
0, the heat of the combustion gas is not released to the air preheater 13 by thermal conduction as in the conventional case, so the air preheater does not become large and the heat radiation loss does not increase.

一方、このようにして加熱器１７に熱を与えられたエン
ジンは、ディスプレーサ２１の往復運動に伴ない作動す
るようになる。On the other hand, the engine, which has been given heat by the heater 17 in this manner, comes to operate as the displacer 21 reciprocates.

発明の詳細 な説明したように、本発明のスターリングエンジンによ
れば、対流だけでなく輻射の効果も加わり、加熱器全均
一に、かつ高効率で加熱することができる。また、熱伝
導により空気予熱器に熱が逃げることがないため、加熱
器内の温度を上昇させることができ、スターリングエン
ジンとしても高効率化を達成することが可能となる。さ
らに、温度分布が均一であるため、加熱器を局部的に過
熱する危険性も低く、寿命の点でも優位性がある。As described in detail, according to the Stirling engine of the present invention, not only convection but also radiation effects are added, and the whole heater can be heated uniformly and with high efficiency. Furthermore, since heat does not escape to the air preheater due to heat conduction, the temperature inside the heater can be increased, and it becomes possible to achieve high efficiency as a Stirling engine. Furthermore, since the temperature distribution is uniform, the risk of locally overheating the heater is low, and there is an advantage in terms of service life.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のスターリングエンジンの一実施例の構
成図、第２図は従来例のスターリングエンジンの構成図
である。 １３・・・・・・空気予熱器、１７・・・・・・加熱器
、２０・・・・・・断熱材、２１・・・・・・ディスプ
レーサ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名／３
−−一臣気予グ９客 第１図　　　　　　　１５−燃、境１ １７−−−加処腐、 第２図FIG. 1 is a block diagram of an embodiment of a Stirling engine according to the present invention, and FIG. 2 is a block diagram of a conventional Stirling engine. 13... Air preheater, 17... Heater, 20... Heat insulating material, 21... Displacer. Name of agent: Patent attorney Toshio Nakao and 1 other person/3
--Ichisomi Kiyogu 9 customers Figure 1 15-Burning, Boundary 1 17--Kasuroro, Figure 2

Claims (4)

【特許請求の範囲】[Claims] （１）複数の細管で形成した加熱器全体の周囲に、前記
加熱器に接することなく、前記加熱器全体を取り囲むよ
うに、吸収率の低い白色系統の断熱材を設置したことを
特徴とするスターリングエンジン。(1) A white heat insulating material with a low absorption rate is installed around the entire heater formed by a plurality of thin tubes so as to surround the entire heater without coming into contact with the heater. Stirling engine. （２）前記白色系統の断熱材の材料として、アルミナ（
Ａｌ＿２Ｏ＿３）、コージライト（２ＭｇＯ、２Ａｌ＿
２Ｏ＿３、５ＳｉＯ＿２）、サーメット等のセラミック
を用いたことを特徴とする特許請求の範囲第１項記載の
スターリングエンジン。(2) Alumina (
Al_2O_3), cordierite (2MgO, 2Al_
2O_3, 5SiO_2), cermet, or other ceramic is used for the Stirling engine according to claim 1. （３）前記加熱器と前記白色系統の断熱材のクリアラン
スが２０ｍｍ以内であることを特徴とする特許請求の範
囲第１項記載のスターリングエンジン。(3) The Stirling engine according to claim 1, wherein a clearance between the heater and the white heat insulating material is within 20 mm. （４）前記白色系統の断熱材の表面に複数のくぼみを設
けたことを特徴とする特許請求の範囲第１項記載のスタ
ーリングエンジン。(4) The Stirling engine according to claim 1, wherein a plurality of depressions are provided on the surface of the white heat insulating material.
JP26403785A 1985-11-25 1985-11-25 Stirling engine Pending JPS62126252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26403785A JPS62126252A (en) 1985-11-25 1985-11-25 Stirling engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26403785A JPS62126252A (en) 1985-11-25 1985-11-25 Stirling engine

Publications (1)

Publication Number Publication Date
JPS62126252A true JPS62126252A (en) 1987-06-08

Family

ID=17397670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26403785A Pending JPS62126252A (en) 1985-11-25 1985-11-25 Stirling engine

Country Status (1)

Country Link
JP (1) JPS62126252A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451752U (en) * 1987-09-28 1989-03-30
JPS6451751U (en) * 1987-09-28 1989-03-30
JPS6451753U (en) * 1987-09-28 1989-03-30
JPH0610693U (en) * 1992-07-17 1994-02-10 石川島播磨重工業株式会社 Bend support device for high temperature piping
US10422300B2 (en) * 2014-06-20 2019-09-24 Yanmar Co., Ltd. Radiant heat recovery heater, and stirling engine and combustion furnace using radiant heat recovery heater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964741A (en) * 1972-08-24 1974-06-22
JPS5232419A (en) * 1975-09-06 1977-03-11 Kuniaki Horikoshi Method and device for combustion promotion in internal combustion engi ne
JPS58178852A (en) * 1982-04-13 1983-10-19 Asahi Glass Co Ltd Stirling engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4964741A (en) * 1972-08-24 1974-06-22
JPS5232419A (en) * 1975-09-06 1977-03-11 Kuniaki Horikoshi Method and device for combustion promotion in internal combustion engi ne
JPS58178852A (en) * 1982-04-13 1983-10-19 Asahi Glass Co Ltd Stirling engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451752U (en) * 1987-09-28 1989-03-30
JPS6451751U (en) * 1987-09-28 1989-03-30
JPS6451753U (en) * 1987-09-28 1989-03-30
JPH0610693U (en) * 1992-07-17 1994-02-10 石川島播磨重工業株式会社 Bend support device for high temperature piping
US10422300B2 (en) * 2014-06-20 2019-09-24 Yanmar Co., Ltd. Radiant heat recovery heater, and stirling engine and combustion furnace using radiant heat recovery heater

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