JPH0471124B2 - - Google Patents
Info
- Publication number
- JPH0471124B2 JPH0471124B2 JP58166955A JP16695583A JPH0471124B2 JP H0471124 B2 JPH0471124 B2 JP H0471124B2 JP 58166955 A JP58166955 A JP 58166955A JP 16695583 A JP16695583 A JP 16695583A JP H0471124 B2 JPH0471124 B2 JP H0471124B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- pressure
- air
- air cushion
- chamber
- 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 37
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/02—Measuring filling height in burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
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)
- Regulation And Control Of 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器に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a pulse combustor.
従来例の構成とその問題点
パルス燃焼器は、始動時に燃料ガスと送風フア
ンにより燃焼用空気を燃焼室に供給させ、点火プ
ラグを作動させることにより強制的に燃焼を行な
わせる。ひとたび系が安定して燃焼サイクルを形
成すると点火プラグや送風フアンを停止しても、
燃焼用空気を自動吸引し、自己着火により数十〜
数百ヘルツの一定周波数でパルス燃焼を継続す
る。Conventional Structure and Problems When a pulse combustor is started, combustion air is supplied to the combustion chamber using fuel gas and a blower fan, and combustion is forced by operating a spark plug. Once the system stabilizes and forms a combustion cycle, even if you stop the spark plugs and blower fan,
Combustion air is automatically sucked and self-ignited, resulting in dozens of
Pulse combustion continues at a constant frequency of several hundred hertz.
このようなパルス燃焼器は、高負荷で燃焼し、
熱伝達特性がよく、始動時を除けば着火や給排気
を自動で行い、構造が簡単であるなどの利点があ
る。 Such pulse combustors burn at high loads,
It has good heat transfer characteristics, ignition and air supply/exhaust are automatic except during startup, and has advantages such as a simple structure.
しかしながら、パルス燃焼の自励サイクルは、
毎秒数十回から数百回の割合で行なわれ、一サイ
クル当り、着火→排気→吸引という過程を繰り返
している。従つてこの繰り返しが非常に短時間で
行なわれるために、着火遅れやバルブの運動の乱
れなどの外乱により、燃焼状態が悪くなつたり、
失火したりする。そこで、燃焼状態を精度良く把
握することが必要となつてくる。 However, the self-excited cycle of pulsed combustion
This is done at a rate of several tens to hundreds of times per second, and the process of ignition → exhaust → suction is repeated per cycle. Therefore, because this process is repeated in a very short time, disturbances such as ignition delay or irregular valve movement can cause combustion conditions to deteriorate.
It may cause a misfire. Therefore, it is necessary to accurately grasp the combustion state.
従来行なわれてきた燃焼室やテイルパイプにお
ける火炎検知や圧力検知による方法では失火して
いるか否かという情報を得ることができても、悪
い燃焼状態で燃焼しているという情報を得ること
は不可能であつた。加えて、火炎検知や圧力検知
に用いるセンサが、燃焼室やテイルパルプなどの
非常に高温な場所に置かれるので、センサの寿命
や信頼性に大きな問題があつた。 Although the conventional methods of detecting flame and pressure in the combustion chamber and tailpipe can provide information on whether or not there is a misfire, it is impossible to obtain information that the combustion is occurring in poor combustion conditions. It was possible. In addition, the sensors used for flame detection and pressure detection are placed in very high temperature locations such as combustion chambers and tail pulp, which poses major problems with the sensor's lifespan and reliability.
発明の目的
本発明はこのような欠点に鑑みて行なわれたも
ので、簡単な構造で燃焼状態を制御できるパルス
燃焼器を提供するものである。OBJECTS OF THE INVENTION The present invention has been made in view of these drawbacks, and an object thereof is to provide a pulse combustor that has a simple structure and can control the combustion state.
発明の構成
本発明は、燃焼室の一端にテイルパイプを接続
し、他端にガスバルブ装置を具備したガス供給路
と、空気バルブ装置を具備した空気クツシヨンチ
ヤンバを接続し、空気クツシヨンチヤンバ内の圧
力変動を検知してガス供給路にある電磁弁を開閉
させる圧力検知器を空気クツシヨンチヤンバに設
けたパルス燃焼器である。Structure of the Invention The present invention connects a tail pipe to one end of a combustion chamber, connects a gas supply path equipped with a gas valve device to the other end, and an air cushion chamber equipped with an air valve device. This is a pulse combustor equipped with a pressure detector installed in the air cushion chamber that detects pressure fluctuations within the chamber and opens and closes a solenoid valve in the gas supply path.
実施例の説明
本発明の一実施例を第１図を用いて説明する。
本発明のパルス燃焼器は第１図に示すように、燃
焼室１、テイルパイプ２、点火プラグ３、空気室
４、空気バルブ装置５、空気クツシヨンチヤンバ
６、ガス供給路７、ガスバルブ装置８、比例制御
弁９、圧力検知器１０、判断回路１１から構成さ
れている。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the pulse combustor of the present invention includes a combustion chamber 1, a tail pipe 2, a spark plug 3, an air chamber 4, an air valve device 5, an air cushion chamber 6, a gas supply path 7, and a gas valve device. 8, a proportional control valve 9, a pressure detector 10, and a judgment circuit 11.
始動時に始動用送風フアンにより燃焼用空気を
燃焼室１に供給させ、点火プラグ３を作動させて
燃料ガスを燃焼室１に供給することにより強制的
に燃焼を行なわせる。系が安定して自励燃焼サイ
クルを形成すると、点火プラグ３と始動用送風フ
アンを停止して、一定周波数でパルス燃焼を継続
する。一サイクル当り着火→排気→吸引という過
程を繰り返しており、排気過程では空気バルブ装
置５が閉じるために燃焼ガスはテイルパイプ２の
方から排出される。吸引過程では燃焼室１が負圧
になり、空気バルブ装置５が開いて、燃焼用空気
が空気クツシヨンチヤンバ６、空気バルブ装置
５、空気室４を経て燃焼室１に供給される。従つ
て、空気クツシヨンチヤンバ６内の圧力も燃焼室
１と同様にほぼ正弦波に近い圧力変化をする。こ
の圧力波形を示したのが第２図ａである。ａの圧
力波形は燃焼状態が良く、COもほとんど発生し
ていない時の圧力波形である。波形にはビートが
ほとんど見られず、圧力振幅の最大値と最小値
Pnax／Pnio≒１である。ここで燃焼量を徐々に増
やしていくとCO2％もCO％も増加し、CO／CO2
＝0.01を越えると第２図のｂのような圧力波形が
得られる。前述のａの波形と異なり、かなりビー
トがでてくる。そしてPnax／Pnioの値も２を越す
ようになる。従つて本発明では、このような空気
クツシヨンチヤンバ６の圧力波形の変化を利用し
て、燃焼状態を制御するパスル燃焼器を提供す
る。 At the time of starting, combustion air is supplied to the combustion chamber 1 by a starting blower fan, and the spark plug 3 is operated to supply fuel gas to the combustion chamber 1, thereby forcibly causing combustion. When the system stabilizes and forms a self-exciting combustion cycle, the spark plug 3 and the starting blower fan are stopped, and pulse combustion continues at a constant frequency. The process of ignition → exhaust → suction is repeated per cycle, and in the exhaust process, the air valve device 5 closes, so that the combustion gas is discharged from the tail pipe 2. During the suction process, the combustion chamber 1 becomes under negative pressure, the air valve device 5 opens, and combustion air is supplied to the combustion chamber 1 via the air cushion chamber 6, the air valve device 5, and the air chamber 4. Therefore, the pressure within the air cushion chamber 6 also changes in a substantially sinusoidal manner, similar to the combustion chamber 1. FIG. 2a shows this pressure waveform. The pressure waveform in a is a pressure waveform when the combustion condition is good and almost no CO is generated. There are almost no beats in the waveform, and the maximum and minimum values of pressure amplitude
P nax /P nio ≈1. If you gradually increase the amount of combustion, both CO 2 % and CO % will increase, and CO / CO 2
When the value exceeds 0.01, a pressure waveform like that shown in Fig. 2b is obtained. Unlike the waveform a mentioned above, there is a considerable beat. The value of P nax /P nio also exceeds 2. Therefore, the present invention provides a pulse combustor that controls the combustion state by utilizing such changes in the pressure waveform of the air cushion chamber 6.
すなわち、空気クツシヨンチヤンバ６の圧力を
圧力検知器１０で検知して判断回路１１に信号を
送る。判断回路１２では、送られてきた信号を波
形処理し、予め設定したデータと比較して情報処
理する。たとえば、圧力検知器１０より送られた
信号のPnax／Pnioの値を演算し、設定値以上にな
つたらPnax／Pnioの値が設定値以下になるまで、
ガス供給路７にある比例制御弁９を開閉すること
により燃焼量を変化させて燃焼状態を制御する。
一方、パルス燃焼器が失火した場合は、空気クツ
シヨンチヤンバ６の圧力が零になるので、圧力検
知器１０より“空気クツシヨンチヤンバ６の圧力
が零である”という信号を送られた判断回路１１
は、直ちに比例制御弁９を遮閉してガスの供給を
停止する。 That is, the pressure in the air cushion chamber 6 is detected by the pressure detector 10 and a signal is sent to the judgment circuit 11. The judgment circuit 12 performs waveform processing on the received signal, compares it with preset data, and performs information processing. For example, the value of P nax /P nio of the signal sent from the pressure sensor 10 is calculated, and when it exceeds the set value, the value of P nax /P nio is calculated until the value of P nax /P nio becomes less than the set value.
By opening and closing a proportional control valve 9 in the gas supply path 7, the combustion amount is changed and the combustion state is controlled.
On the other hand, if the pulse combustor misfires, the pressure in the air cushion chamber 6 becomes zero, so the pressure detector 10 sends a signal that "the pressure in the air cushion chamber 6 is zero." Judgment circuit 11
immediately shuts off the proportional control valve 9 and stops the gas supply.
従つて、本発明のパルス燃焼器は、失火検知を
行なうばかりでなく、燃焼状態を精度よく制御す
ることができ、燃焼特性を向上できる。 Therefore, the pulse combustor of the present invention not only detects misfire, but also controls the combustion state with high precision, and improves combustion characteristics.
発明の効果
空気クツシヨンチヤンバ内の圧力変動を検知し
て、ガス供給路にある電磁弁を開閉させる圧力検
知器を空気クツシヨンチヤンバに設けることによ
り、パルス燃焼器の失火検知ばかりでなく、燃焼
状態を精度よく制御することができ、燃焼特性の
向上に効果がある。Effects of the Invention By installing a pressure detector in the air cushion chamber that detects pressure fluctuations in the air cushion chamber and opens and closes a solenoid valve in the gas supply path, it is possible to detect not only a misfire in a pulse combustor but also to detect a misfire in a pulse combustor. , it is possible to control the combustion state with high precision, and it is effective in improving combustion characteristics.
第１図は本発明の一実施例のパルス燃焼器の構
成図、第２図は第１図における空気クツシヨンチ
ヤンバの圧力波形図である。
１……燃焼室、２……テイルパイプ、５……空
気バルブ装置、６……空気クツシヨンチヤンバ、
９……比例制御弁、１０……圧力検知器。
FIG. 1 is a block diagram of a pulse combustor according to an embodiment of the present invention, and FIG. 2 is a pressure waveform diagram of the air cushion chamber in FIG. 1. 1... Combustion chamber, 2... Tail pipe, 5... Air valve device, 6... Air cushion chamber,
9...Proportional control valve, 10...Pressure detector.
Claims (1)
にガスバルブ装置を具備したガス供給路と、空気
バルブ装置を具備した空気クツシヨンチヤンバを
接続し、前記空気クツシヨンチヤンバ内の圧力変
動を検知して前記ガス供給路にある電磁弁を開閉
させる圧力検知器を前記空気クツシヨンチヤンバ
に設けたパルス燃焼器。1. A tail pipe is connected to one end of the combustion chamber, and a gas supply path equipped with a gas valve device is connected to an air cushion chamber equipped with an air valve device at the other end, and pressure fluctuations in the air cushion chamber are controlled. The pulse combustor is provided with a pressure detector in the air cushion chamber that detects pressure and opens and closes a solenoid valve in the gas supply path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58166955A JPS6057122A (en) | 1983-09-09 | 1983-09-09 | pulse combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58166955A JPS6057122A (en) | 1983-09-09 | 1983-09-09 | pulse combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6057122A JPS6057122A (en) | 1985-04-02 |
| JPH0471124B2 true JPH0471124B2 (en) | 1992-11-12 |
Family
ID=15840716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58166955A Granted JPS6057122A (en) | 1983-09-09 | 1983-09-09 | pulse combustor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057122A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950001890B1 (en) * | 1989-12-21 | 1995-03-06 | 가부시끼가이샤 도토오루 커피 | Distribution device of coffee bean |
| WO2017147805A1 (en) * | 2016-03-02 | 2017-09-08 | 马骏 | Highly interference resistant pulse combustion device |
-
1983
- 1983-09-09 JP JP58166955A patent/JPS6057122A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6057122A (en) | 1985-04-02 |
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