JPH0656136B2 - Igniter - Google Patents
IgniterInfo
- Publication number
- JPH0656136B2 JPH0656136B2 JP4151787A JP4151787A JPH0656136B2 JP H0656136 B2 JPH0656136 B2 JP H0656136B2 JP 4151787 A JP4151787 A JP 4151787A JP 4151787 A JP4151787 A JP 4151787A JP H0656136 B2 JPH0656136 B2 JP H0656136B2
- Authority
- JP
- Japan
- Prior art keywords
- igniter
- electrode
- cathode electrode
- injection port
- anode electrode
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000007800 oxidant agent Substances 0.000 description 15
- 230000001590 oxidative effect Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Spark Plugs (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ロケツトエンジンに使用するエアギヤツプ式
点火器の構造に関する。Description: TECHNICAL FIELD The present invention relates to the structure of an air gear type igniter used in a rocket engine.
従来の技術 従来のこの種点火器は第３図(a)および(b)に示したよう
に、先端が円形に形成されたアノード電極１があり、こ
のまわりにはアノード電極１と同心状のカソード電極２
が配置されている。酸化剤はアノード電極１の軸線方向
に流れ、エアギヤツプ３を介して燃焼室４に入れられ、
燃料はカソード電極２の内周端付近に設けられた燃料噴
射口５より燃焼室４に噴射される。2. Description of the Related Art A conventional igniter of this type has an anode electrode 1 having a circular tip, as shown in FIGS. 3 (a) and 3 (b), around which an anode electrode 1 is concentric with the anode electrode 1. Cathode electrode 2
Are arranged. The oxidant flows in the axial direction of the anode electrode 1 and enters the combustion chamber 4 through the air gear 3 and
Fuel is injected into the combustion chamber 4 from a fuel injection port 5 provided near the inner peripheral end of the cathode electrode 2.
このような点火器において、アノード電極１とカソード
電極２との間のエアギヤツプ３は全周にわたつて等しい
距離を有しているのでスパーク位置が一定でない。した
がつて、燃料噴射口５とスパーク位置との位置関係が確
定できず、着火特性が悪い。In such an igniter, the air gear 3 between the anode electrode 1 and the cathode electrode 2 has an equal distance over the entire circumference, so the spark position is not constant. Therefore, the positional relationship between the fuel injection port 5 and the spark position cannot be determined, and the ignition characteristic is poor.
また、設計上酸化剤の流量が多い点火器の場合、電極間
のエアギヤツプ３は最適値よりあまり大きくすることが
できないので、電極部通過の酸化剤の流速が大きくな
り、着火特性が悪くなる。Further, in the case of an igniter in which the flow rate of the oxidant is large by design, the air gap 3 between the electrodes cannot be set to be much larger than the optimum value, so that the flow rate of the oxidant passing through the electrode parts becomes large and the ignition characteristics deteriorate.
発明が解決しようとする問題点 上述のように従来のエアギヤツプ式点火器の電極では燃
料噴射口とスパーク位置の位相とを合わせることができ
ず、また、電極ギヤツプ間の距離を変えずに酸化剤の通
過流路面積を変えることはできなかつた。Problems to be Solved by the Invention As described above, the electrodes of the conventional air gear type igniter cannot match the phases of the fuel injection port and the spark position, and the oxidizer can be used without changing the distance between the electrode gear types. It was impossible to change the area of the passage.
本発明は上記事情にかんがみ、上記の２つの不具合を同
時に解消したエアギヤツプ式点火器を提供することを目
的とする。In view of the above circumstances, it is an object of the present invention to provide an air gear type igniter that solves the above two problems at the same time.
問題点を解決するための手段 本発明によれば、先端が円形に形成されたアノード電極
とこのアノード電極を囲むよう同心状に形成されたカソ
ード電極とから成るエアギヤツプ式点火器において、カ
ソード電極の内周端にはその円周方向に間隔を置いて設
けたノツチ部を備え、そのノツチ部間のカソード電極先
端部に燃料噴射口を設けてあることを特徴とする点火器
が提供される。According to the present invention, according to the present invention, in an air gear type igniter comprising an anode electrode having a circular tip and a cathode electrode concentrically formed so as to surround the anode electrode, There is provided an igniter characterized in that a notched portion is provided at an inner circumferential end thereof at intervals in the circumferential direction thereof, and a fuel injection port is provided at a cathode electrode tip end portion between the notched portions.
作用 カソード電極の内周端にノツチ部を設けて花型構造にし
たことにより、スパークはアノード電極に一番近い先端
部にだけ飛ぶようになり、この結果、その先端部に設け
た燃料噴射口とスパーク位置の位相が合うようにされ
る。By forming a notch on the inner peripheral edge of the cathode electrode to create a flower-shaped structure, the spark will only fly to the tip that is closest to the anode, and as a result, the fuel injection port provided at the tip And the spark position is in phase.
また、スパークは先端部で飛ぶためカソード電極の他の
部分は電極として寄与せず、したがつて、ノツチ部の大
きさを酸化剤の必要量に応じて流路断面積を自由に変え
ることが可能となる。Further, since the spark flies at the tip, the other part of the cathode electrode does not contribute as an electrode, and therefore, the size of the notch can freely change the channel cross-sectional area according to the required amount of the oxidizer. It will be possible.
実施例 第１図(a)および(b)および第２図(a)および(b)は本発明
による点火器の２つの実施例を示すもので、たとえば燃
料に対する酸化剤の重量が大きなメイン点火器と、燃料
と酸化剤との重量があまり変わらないプリバーナ点火器
を示している。これらの図において、符号１はアノード
電極、２はカソード電極、３はエアギヤツプ、４は燃焼
室、５は燃料噴射口、６はノツチ部を示している。Embodiments FIGS. 1 (a) and (b) and FIGS. 2 (a) and (b) show two embodiments of an igniter according to the present invention, for example, a main ignition in which a weight of an oxidizer with respect to a fuel is large. And a preburner igniter where the weights of fuel and oxidizer do not vary significantly. In these drawings, reference numeral 1 is an anode electrode, 2 is a cathode electrode, 3 is an air gear, 4 is a combustion chamber, 5 is a fuel injection port, and 6 is a notched portion.
電極間において、酸化剤（GO2）は第１図(b)、第２図
(b)の左側から入り、アノード電極１を包み込みながら
燃焼室４に入る。カソード電極２は円周方向にたとえば
６つのノツチ部６を有して花型構造をしており、カソー
ド電極２の各先端部には燃料噴射口４が設けられてい
る。燃料（GH2）はこの噴射口４より燃焼室４に入り、
酸化剤と混合した位置に必ずスパークが飛ぶ構造となつ
ている。Oxidizing agent (GO 2 ) between the electrodes is shown in Fig. 1 (b) and Fig. 2.
It enters from the left side of (b) and enters the combustion chamber 4 while wrapping around the anode electrode 1. The cathode electrode 2 has a flower-shaped structure having, for example, six notches 6 in the circumferential direction, and a fuel injection port 4 is provided at each tip of the cathode electrode 2. Fuel (GH 2 ) enters the combustion chamber 4 through this injection port 4,
The structure is such that sparks always fly to the position where it is mixed with the oxidizer.
また、第１図に示したメイン点火器においては、その酸
化剤は燃料に対する重量が６．０と大きく、大量の酸化
剤を電極部に通過させる必要があるので、ノツチ部６を
大きくして酸化剤の通過断面積を増加させている。これ
により、電極間のエアギヤツプ３は設計上最適な１．５
mmの距離を確保しつつ、酸化剤の電極通過速度を遅くし
て着火性能に大きく寄与している。Further, in the main igniter shown in FIG. 1, the weight of the oxidant with respect to the fuel is as large as 6.0 and it is necessary to pass a large amount of the oxidant to the electrode portion. It increases the cross-sectional area of passage of the oxidant. As a result, the air gap 3 between the electrodes is 1.5
While ensuring a distance of mm, it slows the electrode passage speed of the oxidizer and greatly contributes to the ignition performance.
第２図のプリバーナ点火器においては、酸化剤の重量が
燃料のそれに近いので、ノツチ部６はあまり大きく形成
していない。In the preburner igniter of FIG. 2, since the weight of the oxidizer is close to that of the fuel, the notch portion 6 is not formed so large.
発明の効果 本発明によれば、上記の電極構造によつて、スパーク位
置が確定され、電極間エアギヤツプおよびノツチ部の断
面積をそれぞれ同時に最適値に設計できるので電極部の
ギヤツプを最適に選定しながらも電極部の酸化剤流速の
最適選定が可能となつて、着火性能を著しく向上するこ
とができる。EFFECTS OF THE INVENTION According to the present invention, since the spark position is determined by the above electrode structure and the cross-sectional areas of the inter-electrode air gear trap and the notch portion can be simultaneously designed to the optimum values, the electrode portion gear tap is optimally selected. However, it is possible to optimally select the oxidant flow velocity of the electrode portion, and it is possible to significantly improve the ignition performance.
第１図(a)および(b)は本発明による点火器の第１の実施
例を示す図、第２図(a)および(b)は本発明による点火器
の第２の実施例を示す図、第３図(a)および(b)は従来の
点火器の例を示す図である。 １……アノード電極、２……カソード電極、３……エア
ギヤツプ、４……燃焼室、５……燃料噴射口、６……ノ
ツチ部。FIGS. 1 (a) and 1 (b) are views showing a first embodiment of an igniter according to the present invention, and FIGS. 2 (a) and 2 (b) are a second embodiment of an igniter according to the present invention. FIGS. 3 (a) and 3 (b) are diagrams showing an example of a conventional igniter. 1 ... Anode electrode, 2 ... Cathode electrode, 3 ... Air gear tap, 4 ... Combustion chamber, 5 ... Fuel injection port, 6 ... Notch part.
Claims (1)
のアノード電極を囲むよう同心状に形成されたカソード
電極とから成るエアギヤツプ式点火器において、カソー
ド電極の内周端にはその円周方向に間隔を置いて設けた
ノツチ部を備え、そのノツチ部間のカソード電極先端部
に燃料噴射口を設けてあることを特徴とする点火器。1. An air gear type igniter comprising an anode electrode having a circular tip and a cathode electrode concentrically formed so as to surround the anode electrode. An igniter characterized in that a notched portion is provided at an interval between the notched portions, and a fuel injection port is provided at the tip of the cathode electrode between the notched portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4151787A JPH0656136B2 (en) | 1987-02-26 | 1987-02-26 | Igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4151787A JPH0656136B2 (en) | 1987-02-26 | 1987-02-26 | Igniter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63208654A JPS63208654A (en) | 1988-08-30 |
| JPH0656136B2 true JPH0656136B2 (en) | 1994-07-27 |
Family
ID=12610567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4151787A Expired - Lifetime JPH0656136B2 (en) | 1987-02-26 | 1987-02-26 | Igniter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0656136B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006052171B4 (en) * | 2006-11-02 | 2009-08-20 | Astrium Gmbh | Igniter anode for re-ignitable rocket combustion chambers |
| FR2914368B1 (en) * | 2007-03-30 | 2009-10-16 | Snecma Sa | ELECTROLYTIC IGNITER FOR FLUID ERGOL ENGINE-FUSE |
| FR2914369B1 (en) * | 2007-03-30 | 2014-02-07 | Snecma | ELECTROLYTIC IGNITER FOR ENGINE-ROCKET IN MONERGOL |
| FR3047277B1 (en) * | 2016-01-29 | 2019-12-20 | Arianegroup Sas | INJECTION ELEMENT PROVIDED WITH AN IGNITION DEVICE |
-
1987
- 1987-02-26 JP JP4151787A patent/JPH0656136B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63208654A (en) | 1988-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |