JPH0549887B2 - - Google Patents
Info
- Publication number
- JPH0549887B2 JPH0549887B2 JP59145290A JP14529084A JPH0549887B2 JP H0549887 B2 JPH0549887 B2 JP H0549887B2 JP 59145290 A JP59145290 A JP 59145290A JP 14529084 A JP14529084 A JP 14529084A JP H0549887 B2 JPH0549887 B2 JP H0549887B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- pulse
- air
- combustion chamber
- ignition
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 42
- 239000002737 fuel gas Substances 0.000 claims description 20
- 239000000567 combustion gas Substances 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000009841 combustion method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 230000002269 spontaneous effect Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C15/00—Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はパルス燃焼方法に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a pulse combustion method.
（従来の技術）
従来、パルス燃焼装置では起動時にのみスパー
クによる点火を行い、起動後は燃焼過程に於いて
燃焼室内が負圧となつた際に、空気と燃料ガスの
吸入と同時に起こる高温の燃焼ガスの一部の戻り
によつて自然着火させて固有の周波数でのパルス
燃焼を継続させている。(Prior art) Conventionally, in a pulse combustion device, ignition is performed by a spark only at startup, and after startup, when the combustion chamber becomes negative pressure during the combustion process, the high temperature that occurs at the same time as air and fuel gas are inhaled. Part of the combustion gas returns to cause spontaneous ignition, allowing pulse combustion to continue at a unique frequency.
（発明が解決しようとする課題）
燃焼室内に戻る高温の燃焼ガスにより自然着火
させる方法では、各周期に於ける点火のタイミン
グにばらつきがあり、例えば第４図に示すように
空気と燃料ガスの吸引が不十分なうちに着火が起
こることもある。そして、このような着火では燃
焼室内圧力があまり高くならないという不都合が
生じる。(Problems to be Solved by the Invention) In the method of spontaneous ignition using high-temperature combustion gas returning into the combustion chamber, there are variations in the timing of ignition in each cycle, and for example, as shown in Fig. 4, the timing of ignition is different between air and fuel gas. Ignition may occur even when suction is insufficient. Such ignition causes the disadvantage that the pressure within the combustion chamber does not become very high.
本発明は以上の点に鑑みてなされたものであ
り、即ち点火のタイミングを適切に設定すること
により、燃料ガスと空気の吸引が不十分なうちに
は着火が起こらないようにし、以つて燃焼室内圧
力を高くし得るようにすることを目的とするもの
である。 The present invention has been made in view of the above points, that is, by appropriately setting the ignition timing, ignition does not occur before the suction of fuel gas and air is insufficient, thereby preventing combustion. The purpose is to make it possible to increase the indoor pressure.
（課題を解決するための手段）
上述した目的を達成するために、本発明のパル
ス燃焼方法では、燃焼室と連なる排気管に逆流防
止部を設けて、該燃焼室への燃焼ガスの戻りを低
減する構成にすると共に、燃焼室内にパルス発振
器により制御するスパークロツドを設け、該パル
ス発振器の発振周波数を、パルス燃焼装置の固有
周波数よりも低く設定することにより、先行の燃
焼過程に於ける燃焼室内の負圧による空気と燃料
ガスの吸入完了後に前記スパークロツドにスパー
クを発生させて強制的に点火するようにしたこと
を要旨とする。(Means for Solving the Problems) In order to achieve the above-mentioned object, in the pulse combustion method of the present invention, a backflow prevention part is provided in the exhaust pipe connected to the combustion chamber to prevent combustion gas from returning to the combustion chamber. In addition, by providing a spark rod controlled by a pulse oscillator in the combustion chamber, and setting the oscillation frequency of the pulse oscillator lower than the natural frequency of the pulse combustion device, the The gist of the present invention is to generate a spark in the spark rod to forcibly ignite the spark rod after the suction of air and fuel gas is completed due to the negative pressure of the spark rod.
（作用）
排気管に設けた逆流防止部の作用により、燃焼
室内に戻る高温の燃焼ガスの量が少ないので、空
気と燃料ガスの吸引を良好に行えると共に、吸引
された空気と燃料ガスの混合気の自然着火を防止
することができる。(Function) Due to the action of the backflow prevention part installed in the exhaust pipe, the amount of high-temperature combustion gas that returns to the combustion chamber is small, so air and fuel gas can be sucked well, and the sucked air and fuel gas can be mixed. Spontaneous ignition of air can be prevented.
従つて混合気への点火のタイミングをスパーク
ロツドにより制御することができ、このタイミン
グを形成するパルス発振器の発振周波数をパルス
燃焼装置の固有周波数よりも低く設定することに
より、常に空気と燃料ガスの吸引が十分に行われ
た状態で混合気への着火を確実に行うことができ
る。 Therefore, the timing of ignition of the air-fuel mixture can be controlled by the spark rod, and by setting the oscillation frequency of the pulse oscillator that forms this timing to be lower than the natural frequency of the pulse combustion device, air and fuel gas can be constantly drawn. It is possible to reliably ignite the air-fuel mixture in a state where sufficient ignition is performed.
（実施例） 次に本発明の実施例を図について説明する。(Example) Next, embodiments of the present invention will be described with reference to the drawings.
第１図及び第２図は本発明を適用するパルス燃
焼装置の実施例を示すもので、これらの図に於い
て符号１は燃焼室、２は燃焼室１と連なる排気管
である。 1 and 2 show an embodiment of a pulse combustion apparatus to which the present invention is applied, and in these figures, reference numeral 1 represents a combustion chamber, and 2 represents an exhaust pipe connected to the combustion chamber 1. FIG.
第１図の装置は混合室３を設けた構成で、符号
４，５は夫々空気室、燃料ガス室、符号６，７は
夫々フラツパ弁である。また第２図は混合室を有
しない構成で、符号８は空気フラツパ弁、９は空
気フラツパ弁８から導入される空気と直交するよ
うに燃焼室１内に燃料ガスを導入する燃料ガス導
入口、１０は燃料ガスフラツパ弁である。以上の
ような構成の他、本発明を適用するパルス燃焼装
置の構成は適宜である。 The apparatus shown in FIG. 1 has a configuration in which a mixing chamber 3 is provided, numerals 4 and 5 are an air chamber and a fuel gas chamber, respectively, and numerals 6 and 7 are flapper valves, respectively. Further, FIG. 2 shows a configuration without a mixing chamber, where reference numeral 8 denotes an air flapper valve, and 9 denotes a fuel gas inlet for introducing fuel gas into the combustion chamber 1 so as to be perpendicular to the air introduced from the air flapper valve 8. , 10 is a fuel gas flapper valve. In addition to the above-described configuration, the configuration of the pulse combustion apparatus to which the present invention is applied may be appropriate.
このようなパルス燃焼装置に於いて、前記排気
管２には逆流防止部１１を設けて、燃焼室１への
排気の戻りを低減する構成にしている。この逆流
防止部１１はフラツパ弁や逆止弁等によつて容易
に構成することができる。そして燃焼室１内には
パルス発振器１２により制御するスパークロツド
１３を設けている。尚、符号１４は点火トランス
である。 In such a pulse combustion apparatus, the exhaust pipe 2 is provided with a backflow prevention part 11 to reduce the return of exhaust gas to the combustion chamber 1. This backflow prevention section 11 can be easily constructed using a flapper valve, a check valve, or the like. A spark rod 13 controlled by a pulse oscillator 12 is provided within the combustion chamber 1. Note that the reference numeral 14 is an ignition transformer.
以上の構成に於いて、いま第３図の点ａに於い
てスパークロツド１３によりスパークを発生させ
て、燃焼室１内の空気と燃料ガスの混合気に強制
点火すると、燃焼室１内は、まず高い圧力とな
り、次いで燃焼ガスが排気管２を介して排気され
て負圧となる。かかる負圧により空気と燃料ガス
が燃焼室１内に吸引され、圧力が次第に回復して
いく。この際、排気管２には逆流防止部１１を設
けているので、燃焼室１内に戻る燃焼ガスの量が
少なく、従つて上記負圧が有効に利用されて空気
と燃料ガスの吸引が良好に行われる。また、この
ように高温の燃焼ガスの戻り量が少ないので、こ
れを着火源とする空気と燃料ガスの混合気の自然
着火は起こらない。こうして自然着火が起こらず
に空気と燃料ガスの吸入が完了すると、燃焼室１
内の圧力も回復してｂ点に至り、一周期が完了す
る。 In the above configuration, when a spark is generated by the spark rod 13 at point a in FIG. The pressure becomes high, and then the combustion gas is exhausted through the exhaust pipe 2 to become a negative pressure. This negative pressure draws air and fuel gas into the combustion chamber 1, and the pressure gradually recovers. At this time, since the exhaust pipe 2 is provided with a backflow prevention part 11, the amount of combustion gas that returns to the combustion chamber 1 is small, and therefore the negative pressure is effectively used to improve the suction of air and fuel gas. It will be held in Furthermore, since the amount of returned high-temperature combustion gas is small, spontaneous ignition of the mixture of air and fuel gas using this as an ignition source does not occur. When the intake of air and fuel gas is completed without spontaneous ignition occurring, the combustion chamber 1
The internal pressure also recovers and reaches point b, completing one cycle.
パルス発振器１２の発振周波数をパルス燃焼装
置の固有周波数よりも低く設定し、即ち、換言す
るとパルス発振器１２のパルス発生周期を、上記
燃焼の固有の周期よりも長く設定すると、パルス
発振器１２は、燃焼の一周期が終わり、空気と燃
料ガスの吸引が完全に行われた後に次のパルスを
発生して、ｃ点に於いてスパークロツド１３にス
パークを発生させ、上記混合気に強制的に点火し
て次の周期の燃焼が開始することになる。このた
め、十分な量の混合気により多大な燃焼量を得る
ことができる。 When the oscillation frequency of the pulse oscillator 12 is set lower than the natural frequency of the pulse combustion device, in other words, the pulse generation period of the pulse oscillator 12 is set longer than the natural period of combustion, the pulse oscillator 12 After one cycle is completed and the suction of air and fuel gas has been completed, the next pulse is generated to generate a spark in the spark rod 13 at point c, forcibly igniting the air-fuel mixture. The next cycle of combustion will begin. Therefore, a large amount of combustion can be obtained with a sufficient amount of air-fuel mixture.
上記パルス発振器１２は発振周波数を可変とす
ることにより、点火のタイミングを第３図ａ，ｂ
に示すように自由に設定することができる。 The pulse oscillator 12 changes the ignition timing by making the oscillation frequency variable.
It can be set freely as shown in .
（発明の効果）
本発明は以上の通りであるので、燃焼室内に戻
つてくる燃焼ガスを着火源としてパルス燃焼を継
続させる従来の方法と全く異なり、燃焼室内の負
圧による空気と燃料ガスの吸入完了後毎にパルス
発振器によつて制御されるスパークロツドにより
強制的に点火するので、上述した燃焼ガスの戻り
防止による吸入量の増大と相俟つて、多量の混合
気により燃焼量を極めて多くすることができ、以
つて燃焼室内の圧力を高くすることができるとい
う効果がある。また本発明はスパークによる強制
点火であるから、着火が確実で、しかもその点火
のタイミングは、パルス発振器に落ける発振周波
数を変えることにより調節することができるとい
う効果がある。(Effects of the Invention) Since the present invention is as described above, it is completely different from the conventional method of continuing pulse combustion using the combustion gas returning into the combustion chamber as an ignition source. Since the spark rod controlled by the pulse oscillator ignites forcibly every time the suction is completed, the amount of suction is increased by preventing the combustion gas from returning as described above, and the combustion amount is extremely increased due to the large amount of air-fuel mixture. This has the effect of increasing the pressure inside the combustion chamber. Further, since the present invention uses forced ignition using a spark, ignition is reliable, and the ignition timing can be adjusted by changing the oscillation frequency applied to the pulse oscillator.
第１図は、第２図は本発明を適用するパルス燃
焼装置の実施例を表した説明図、第３図ａ，ｂは
本発明方法の動作を燃焼室内圧力で表した説明
図、第４図は従来方法の動作を燃焼室内圧力で表
した説明図である。
符号１……燃焼室、２……排気管、３……混合
室、４……空気室、５……燃料ガス室、６，７…
…フラツパ弁、８……空気フラツパ弁、９……燃
料ガス導入口、１０……燃料ガスフラツパ弁、１
１……逆流防止部、１２……パルス発振器、１３
……スパークロツド、１４……点火トランス。
FIG. 1 is an explanatory diagram showing an embodiment of a pulse combustion apparatus to which the present invention is applied. FIG. The figure is an explanatory diagram showing the operation of the conventional method using combustion chamber pressure. Code 1... Combustion chamber, 2... Exhaust pipe, 3... Mixing chamber, 4... Air chamber, 5... Fuel gas chamber, 6, 7...
...Flapper valve, 8...Air flapper valve, 9...Fuel gas inlet, 10...Fuel gas flapper valve, 1
1...Backflow prevention section, 12...Pulse oscillator, 13
...Spark rod, 14...Ignition transformer.
Claims (1)
気管に逆流防止部を設けて、該燃焼室への燃焼ガ
スの戻りを低減する構成にすると共に、燃焼室内
にパルス発振器により制御するスパークロツドを
設け、該パルス発振器の発振周波数を、パルス燃
焼装置の固有周波数よりも低く設定することによ
り、先行の燃焼過程に於ける燃焼室内の負圧によ
る空気と燃料ガスの吸入完了後毎に前記スパーク
ロツドにスパークを発生させて強制的に点火する
ことを特徴とするパルス燃焼方法。1. In a pulse combustion device, a backflow prevention part is provided in the exhaust pipe connected to the combustion chamber to reduce the return of combustion gas to the combustion chamber, and a spark rod controlled by a pulse oscillator is provided in the combustion chamber. By setting the oscillation frequency of the pulse oscillator lower than the natural frequency of the pulse combustion device, a spark is generated in the spark rod every time the suction of air and fuel gas is completed due to the negative pressure in the combustion chamber in the preceding combustion process. A pulse combustion method characterized by generating and forcibly igniting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14529084A JPS6124908A (en) | 1984-07-13 | 1984-07-13 | Method of pulse burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14529084A JPS6124908A (en) | 1984-07-13 | 1984-07-13 | Method of pulse burning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6124908A JPS6124908A (en) | 1986-02-03 |
| JPH0549887B2 true JPH0549887B2 (en) | 1993-07-27 |
Family
ID=15381719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14529084A Granted JPS6124908A (en) | 1984-07-13 | 1984-07-13 | Method of pulse burning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0567683U (en) * | 1992-02-18 | 1993-09-07 | 株式会社イナックス | Toilet bowl protective structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63217114A (en) * | 1987-03-04 | 1988-09-09 | Paloma Ind Ltd | Ignition device for pulsation burner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5380831A (en) * | 1976-12-27 | 1978-07-17 | Nippon Furnace Kogyo Kk | Method of combustion |
| JPS582522A (en) * | 1981-06-27 | 1983-01-08 | Paloma Ind Ltd | Explosive combustion device |
| JPS5997409A (en) * | 1982-11-27 | 1984-06-05 | Sanyo Electric Co Ltd | Method for spraying fuel oil in burner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5883608U (en) * | 1981-11-25 | 1983-06-06 | 株式会社東芝 | pulse combustion device |
-
1984
- 1984-07-13 JP JP14529084A patent/JPS6124908A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5380831A (en) * | 1976-12-27 | 1978-07-17 | Nippon Furnace Kogyo Kk | Method of combustion |
| JPS582522A (en) * | 1981-06-27 | 1983-01-08 | Paloma Ind Ltd | Explosive combustion device |
| JPS5997409A (en) * | 1982-11-27 | 1984-06-05 | Sanyo Electric Co Ltd | Method for spraying fuel oil in burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0567683U (en) * | 1992-02-18 | 1993-09-07 | 株式会社イナックス | Toilet bowl protective structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6124908A (en) | 1986-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0549887B2 (en) | ||
| JPS51146609A (en) | Fuel injection type 2-stroke engine | |
| JPS5277907A (en) | Combustion chamber of internal combustion engine | |
| JPS5260317A (en) | Internal combustion engine | |
| JPS51123409A (en) | Construction of combustion chamber | |
| JPS52131028A (en) | 4-cycle internal combustion engine | |
| JPS529705A (en) | Internal combustion engine with torch ignition device | |
| Huang et al. | Influence of fuel injection timing on combustion and emission in direct injection natural gas engine. | |
| JPS52110305A (en) | Internal-combustion engine with auxiliary combustion chamber | |
| JPS5493705A (en) | Torch ignition internal combustion engine | |
| JPS5412056A (en) | Compression ignition type engine | |
| JPS5660822A (en) | Swirl combustion chamber of internal combustion engine | |
| JPS5332217A (en) | Fuel supply means for gas turbine | |
| JPS5311205A (en) | Combustion chamber of spark ignition type internal combustion engine | |
| JPS534109A (en) | Gas injecting device for internal combustion engine | |
| JPS57126524A (en) | Method and device for improving combustion conditions of internal combustion engine | |
| JPS5370219A (en) | Internal combustion engine running method | |
| JPS6144206A (en) | Pulse combustion device | |
| JPS5395416A (en) | Active intake method for internal combustion engine | |
| JPS55101718A (en) | Internal combustion engine having subsidiary chamber | |
| JPS5564118A (en) | Internal combustion engine | |
| JPS54151709A (en) | Precombustion chamber type diesel engine | |
| JPS55142929A (en) | Internal combustion engine | |
| JPS539905A (en) | Gas injection system multicylinder engine | |
| JPS52139809A (en) | Internal combustion engine |