JPH07259648A - Combustor of external combustion engine - Google Patents
Combustor of external combustion engineInfo
- Publication number
- JPH07259648A JPH07259648A JP7546694A JP7546694A JPH07259648A JP H07259648 A JPH07259648 A JP H07259648A JP 7546694 A JP7546694 A JP 7546694A JP 7546694 A JP7546694 A JP 7546694A JP H07259648 A JPH07259648 A JP H07259648A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- fuel nozzle
- fuel
- engine
- external
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
-
- 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
- F02G1/044—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 having at least two working members, e.g. pistons, delivering power output
- F02G1/0445—Engine plants with combined cycles, e.g. Vuilleumier
-
- 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
- F02G2250/00—Special cycles or special engines
- F02G2250/18—Vuilleumier cycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷暖房、給湯、動力機
械などの用途に用いられる外燃機関の燃焼装置に関し、
特に耐久性に優れた外燃機関燃焼装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device for an external combustion engine used for applications such as cooling and heating, hot water supply, and power machinery.
Particularly, it relates to an external combustion engine combustion device having excellent durability.
【０００２】[0002]
【従来の技術】従来、この種の外燃機関燃焼装置とし
て、図２に示す構造のものが知られている。即ち、従来
のヴィルミエサイクル機関やスターリングサイクル機関
の外燃機関燃料装置は、同図に示すように燃焼用空気に
旋回を与えて供給するためのスワラ１、燃料を噴出する
ための多孔燃料ノズル等の燃料ノズル２、燃料を着火す
るための点火プラグ３、火炎探知用センサーであるフレ
ームロッド４、燃料ガスと燃焼用空気とを混合するため
のバーナスロート部５及び燃焼ガスによる損失熱量を減
少させるための燃焼ガスの熱を回収するための空気予熱
器としての熱交換器６及びヒータチューブ７により構成
されていた。この場合、熱交換器６によって燃焼用空気
は高温となるため、この燃焼装置では拡散燃焼方式を採
ることが多く、燃料ノズル２の燃料噴出孔から噴出され
る燃料と、スワラ１から供給される燃焼用空気は、バー
ナスロート部５にて混合され、この可燃混合気は燃料ノ
ズル２と、この燃料ノズル２の下流側に設置してある点
火プラグ３との間のアーク放電によって点火され、燃焼
室内で旋回火炎が形成される。2. Description of the Related Art Conventionally, as this type of external combustion engine combustion device, a structure shown in FIG. 2 is known. That is, as shown in the figure, a conventional external combustion engine fuel device for a Wilmie cycle engine or a Stirling cycle engine includes a swirler 1 for swirling and supplying combustion air, and a porous fuel nozzle for ejecting fuel. Etc., a fuel nozzle 2, an ignition plug 3 for igniting fuel, a flame detection sensor frame rod 4, a burner throat 5 for mixing fuel gas and combustion air, and heat loss due to combustion gas. The heat exchanger 6 and the heater tube 7 are used as an air preheater for recovering the heat of the combustion gas. In this case, since the combustion air is heated to a high temperature by the heat exchanger 6, this combustion device often adopts the diffusion combustion method, and the fuel ejected from the fuel ejection hole of the fuel nozzle 2 and the swirler 1 are supplied. The combustion air is mixed in the burner throat section 5, and the combustible mixture is ignited by arc discharge between the fuel nozzle 2 and an ignition plug 3 installed on the downstream side of the fuel nozzle 2 to burn. A swirling flame is formed in the room.
【０００３】[0003]
【発明が解決しようとする課題】ところで、従来の外燃
機関燃焼装置では、バーナスロート部の内部で燃料と燃
焼用空気とが混合され燃焼反応を行うものであり、燃料
ノズルの燃料噴射孔下流部では常に火炎が存在するた
め、燃料ノズルの燃料噴射孔下流側に設置してある点火
プラグも常に火炎に晒されるという状態にあった。この
ため、長時間、高温に晒らされることになる点火プラグ
は熱変形や酸化による損傷が著しくなるという問題があ
った。このような点火プラグの熱変形や損傷は、着火時
の正常なスパーク放電を妨げ、不着火の原因ともなり、
安全性の面から大きな問題となっていた。また、点火プ
ラグ自身の耐久性も短くなり、その結果燃焼器自身の寿
命を短くする要因にもなるという問題もあった。本発明
は上記従来のものの課題（問題点）を解決するようにし
た外燃機関燃焼装置を提供することを目的とする。By the way, in the conventional external combustion engine combustion device, the fuel and the combustion air are mixed in the burner throat portion to cause the combustion reaction, and the combustion reaction is performed downstream of the fuel injection hole of the fuel nozzle. Since there is always a flame in the section, the spark plug installed on the downstream side of the fuel injection hole of the fuel nozzle was always exposed to the flame. Therefore, there is a problem that the spark plug, which is exposed to a high temperature for a long time, is significantly damaged by thermal deformation and oxidation. Such thermal deformation and damage of the spark plug hinders normal spark discharge during ignition, causing misfire.
It was a big problem in terms of safety. There is also a problem that the durability of the spark plug itself is shortened, resulting in shortening the life of the combustor itself. An object of the present invention is to provide an external combustion engine combustion device that solves the above-mentioned problems (problems) of the conventional one.
【０００４】[0004]
【課題を解決するための手段】本発明の外燃機関燃焼装
置は、上記課題を解決するために、ヴィルミエサイクル
機関やスターリングサイクル機関のような外燃式熱再生
サイクル機関における外部加熱装置として、ガス、灯油
などの気体又は液体の化石燃料を燃焼させて機関内部の
高温空間を加熱したのち燃焼ガスの熱を回収する空気予
熱器、燃料噴射孔を有する燃料ノズル、この燃料ノズル
から噴出された燃料と燃焼用空気とを混合するためのバ
ーナスロート部で構成される外燃機関燃焼装置におい
て、当該点火プラグの先端位置が燃料ノズルの燃料噴射
孔上流側となるように点火プラグを配置するように構成
した。この場合，上記点火プラグに対して前記燃料ノズ
ルの長さを大とするか，または上記燃料ノズルに対して
前記点火プラグの長さを小とすることにより上記点火プ
ラグの先端が前記燃料ノズルの上流側となるように構成
すれば良い。In order to solve the above problems, the external combustion engine combustion apparatus of the present invention is used as an external heating device in an external combustion heat regeneration cycle engine such as a Wilmie cycle engine or a Stirling cycle engine. , An air preheater that burns gas or liquid fossil fuel such as kerosene to heat the high temperature space inside the engine and then recovers the heat of the combustion gas, a fuel nozzle with fuel injection holes, and a jet from this fuel nozzle In an external combustion engine combustion device configured by a burner throat part for mixing fuel and combustion air, the ignition plug is arranged so that the tip position of the ignition plug is located upstream of the fuel injection hole of the fuel nozzle. As configured. In this case, by making the length of the fuel nozzle large with respect to the spark plug or making the length of the spark plug small with respect to the fuel nozzle, the tip of the spark plug becomes It may be configured to be on the upstream side.
【０００５】[0005]
【作用】本発明による外燃機関燃焼装置は、当該点火プ
ラグの先端位置が燃料ノズルの燃料噴射孔上流側となる
ように点火プラグを配置するようにしたため、着火後も
点火プラグが常に火炎に直接晒されることが防止され
る。また、数値計算によって燃料ノズルの燃料噴射孔上
流側にも可燃混合気の存在が認められ、大気開放燃焼試
験において良好に着火することが実証されており、従来
の構造に比べて、この着火性能は損なわれない。In the external combustion engine combustion apparatus according to the present invention, since the ignition plug is arranged so that the tip end position of the ignition plug is located on the upstream side of the fuel injection hole of the fuel nozzle, the ignition plug is always in flame even after ignition. Direct exposure is prevented. In addition, the presence of combustible air-fuel mixture was confirmed upstream of the fuel injection hole of the fuel nozzle by numerical calculation, and it has been proved that ignition is satisfactorily performed in the atmosphere open combustion test. Is not damaged.
【０００６】[0006]
【実施例】以下、本発明の一実施例につき図１を参照し
て説明する。同図において、従来例のものと同一若しく
は同等の部材については図２のものと同一の符号を付し
て示した。図１は本発明を適用したヴィルミエサイクル
機関の燃焼装置の要部を示す縦断正面図であり、同図に
おいて、１はスワラ、２は燃料ノズル、３Ａは点火プラ
グ、４はフレームロッド、５はバーナスロート部、６は
熱交換器、７はヒータチューブである。ところで、本発
明は図１に示すように、点火プラグ３Ａに対して燃料ノ
ズル２の長さを大となるように下方に伸ばすことによ
り，点火プラグ３Ａの先端位置が燃料ノズル２の先端部
よりも、図面上上部の位置、即ち燃料ノズル２の上流側
の位置となるように配置した点に本発明の構成上の特徴
がある。なお，点火プラグ３Ａと燃料ノズル２の関係は
相対的なものであり，図示した実施例に代えて，燃料ノ
ズル２よりも点火プラグ３Ａの長さを小となるように上
方に短縮することにより上記点火プラグの先端が前記燃
料ノズルの上流側となるように構成しても良い。このよ
うにすれば、点火プラグ３Ａは、常に火炎に晒されるこ
とが防止され、この結果，高温による熱変形や過度の酸
化による損傷が防止され得る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. In the figure, the same or equivalent members as those in the conventional example are designated by the same reference numerals as those in FIG. FIG. 1 is a vertical sectional front view showing a main part of a combustion apparatus for a Wilmie cycle engine to which the present invention is applied. In FIG. 1, 1 is a swirler, 2 is a fuel nozzle, 3A is an ignition plug, 4 is a frame rod, 5 Is a burner throat part, 6 is a heat exchanger, and 7 is a heater tube. By the way, according to the present invention, as shown in FIG. 1, by extending the fuel nozzle 2 downward so that the length of the fuel nozzle 2 is larger than that of the spark plug 3A, the tip position of the spark plug 3A is located closer to the tip portion of the fuel nozzle 2. However, the structural feature of the present invention lies in that it is arranged at an upper position in the drawing, that is, at a position upstream of the fuel nozzle 2. Note that the relationship between the spark plug 3A and the fuel nozzle 2 is relative, and instead of the illustrated embodiment, by shortening the length of the spark plug 3A to be smaller than that of the fuel nozzle 2, The tip of the spark plug may be arranged on the upstream side of the fuel nozzle. In this way, the spark plug 3A can be prevented from being constantly exposed to a flame, and as a result, thermal deformation due to high temperature and damage due to excessive oxidation can be prevented.
【０００７】[0007]
【発明の効果】本発明は上記のように構成されるから、
次のような優れた効果を有する。 点火プラグが燃焼ノズルの燃料噴射孔の上流側に設置
され、点火プラグの先端部が常に火炎に晒されることが
防止されるため、点火プラグの熱変形や過度の酸化によ
る損傷が防止される。 このため点火プラグの耐久性が著しく向上し、燃焼器
本体の寿命が長くなる。 点火プラグの熱変形が原因となる不着火現象がなくな
り、安全性も著しく向上する。Since the present invention is constructed as described above,
It has the following excellent effects. Since the spark plug is installed on the upstream side of the fuel injection hole of the combustion nozzle and the tip of the spark plug is prevented from being constantly exposed to the flame, the spark plug is prevented from being deformed by heat or damaged by excessive oxidation. Therefore, the durability of the spark plug is remarkably improved, and the life of the combustor body is extended. The non-ignition phenomenon caused by the thermal deformation of the spark plug is eliminated, and the safety is significantly improved.
【図１】本発明の一実施例としての外燃機関燃焼装置の
要部構成を示す縦断正面図である。FIG. 1 is a vertical cross-sectional front view showing a configuration of a main part of an external combustion engine combustion apparatus as one embodiment of the present invention.
【図２】従来の外燃機関燃焼装置の構成を示す縦断正面
図である。FIG. 2 is a vertical sectional front view showing a configuration of a conventional external combustion engine combustion device.
１：スワラ ２：燃料ノズル ３Ａ：点火プラグ ４：フレームロッド ５：バーナスロート部 ６：熱交換器 ７：ヒータチューブ 1: Swirler 2: Fuel nozzle 3A: Spark plug 4: Frame rod 5: Burner throat part 6: Heat exchanger 7: Heater tube
フロントページの続き (72)発明者 松栄 準治 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内Front page continuation (72) Inventor Junji Matsue 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.
Claims (3)
サイクル機関のような外燃式熱再生サイクル機関におけ
る外部加熱装置として、ガス、灯油などの気体又は液体
の化石燃料を燃焼させて機関内部の高温空間を加熱した
のち燃焼ガスの熱を回収する空気予熱器、燃料噴射孔を
有する燃料ノズル、この燃料ノズルから噴出された燃料
と燃焼用空気とを混合するためのバーナスロート部で構
成される外燃機関燃焼装置において、当該点火プラグの
先端が前記燃料ノズルの上流側となるように点火プラグ
を配置するようにしたことを特徴とする外燃機関燃焼装
置。1. As an external heating device in an external combustion type heat regeneration cycle engine such as a Wilmier cycle engine or a Stirling cycle engine, gas or liquid fossil fuel such as kerosene is burned to form a high temperature space inside the engine. An external combustion engine composed of an air preheater for recovering the heat of combustion gas after heating, a fuel nozzle having a fuel injection hole, and a burner throat portion for mixing the fuel ejected from the fuel nozzle with the combustion air. In the combustion device, the external combustion engine combustion device is characterized in that the ignition plug is arranged such that the tip of the ignition plug is located on the upstream side of the fuel nozzle.
サイクル機関のような外燃式熱再生サイクル機関におけ
る外部加熱装置として、ガス、灯油などの気体又は液体
の化石燃料を燃焼させて機関内部の高温空間を加熱した
のち燃焼ガスの熱を回収する空気予熱器、燃料噴射孔を
有する燃料ノズル、この燃料ノズルから噴出された燃料
と燃焼用空気とを混合するためのバーナスロート部で構
成される外燃機関燃焼装置において、上記点火プラグに
対して前記燃料ノズルの長さを大とすることにより上記
点火プラグの先端が前記燃料ノズルの上流側となるよう
にしたことを特徴とする外燃機関燃焼装置。2. As an external heating device in an external combustion type heat regeneration cycle engine such as a Wilmier cycle engine or a Stirling cycle engine, gas or liquid fossil fuel such as kerosene is burned to form a high temperature space inside the engine. An external combustion engine composed of an air preheater for recovering the heat of combustion gas after heating, a fuel nozzle having a fuel injection hole, and a burner throat portion for mixing the fuel ejected from the fuel nozzle with the combustion air. An external combustion engine combustion apparatus, wherein in the combustion apparatus, the tip of the ignition plug is located on the upstream side of the fuel nozzle by increasing the length of the fuel nozzle with respect to the ignition plug.
サイクル機関のような外燃式熱再生サイクル機関におけ
る外部加熱装置として、ガス、灯油などの気体又は液体
の化石燃料を燃焼させて機関内部の高温空間を加熱した
のち燃焼ガスの熱を回収する空気予熱器、燃料噴射孔を
有する燃料ノズル、この燃料ノズルから噴出された燃料
と燃焼用空気とを混合するためのバーナスロート部で構
成される外燃機関燃焼装置において、上記燃料ノズルに
対して前記点火プラグの長さを小とすることにより上記
点火プラグの先端が前記燃料ノズルの上流側となるよう
にしたことを特徴とする外燃機関燃焼装置。3. An external heating device for an external combustion type heat regeneration cycle engine such as a Wilmier cycle engine or a Stirling cycle engine, which burns a gas or liquid fossil fuel such as gas or kerosene to form a high temperature space inside the engine. An external combustion engine composed of an air preheater for recovering the heat of combustion gas after heating, a fuel nozzle having a fuel injection hole, and a burner throat portion for mixing the fuel ejected from the fuel nozzle with the combustion air. In the combustion device, an external combustion engine combustion device, wherein a length of the spark plug is made smaller than that of the fuel nozzle so that a tip of the spark plug is located on an upstream side of the fuel nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7546694A JPH07259648A (en) | 1994-03-23 | 1994-03-23 | Combustor of external combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7546694A JPH07259648A (en) | 1994-03-23 | 1994-03-23 | Combustor of external combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07259648A true JPH07259648A (en) | 1995-10-09 |
Family
ID=13577121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7546694A Pending JPH07259648A (en) | 1994-03-23 | 1994-03-23 | Combustor of external combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07259648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999004155A1 (en) * | 1997-07-18 | 1999-01-28 | Stm Corporation | Heat engine combustor |
| CN100376849C (en) * | 2005-04-25 | 2008-03-26 | 中国科学院理化技术研究所 | Thermal driving V-M refrigerator system using oil lubrication |
-
1994
- 1994-03-23 JP JP7546694A patent/JPH07259648A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999004155A1 (en) * | 1997-07-18 | 1999-01-28 | Stm Corporation | Heat engine combustor |
| CN100376849C (en) * | 2005-04-25 | 2008-03-26 | 中国科学院理化技术研究所 | Thermal driving V-M refrigerator system using oil lubrication |
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