JPH0578725B2 - - Google Patents
Info
- Publication number
- JPH0578725B2 JPH0578725B2 JP62086503A JP8650387A JPH0578725B2 JP H0578725 B2 JPH0578725 B2 JP H0578725B2 JP 62086503 A JP62086503 A JP 62086503A JP 8650387 A JP8650387 A JP 8650387A JP H0578725 B2 JPH0578725 B2 JP H0578725B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- air
- air supply
- function
- function part
- 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 139
- 238000001514 detection method Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/10—Sequential burner running
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (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
この発明は、主として業務用の貯湯式給湯器、
フライヤ等の液加熱用機器類における加熱源とし
て用いるパルス燃焼器の燃焼切換制御装置に関す
る。[Detailed Description of the Invention] Industrial Application Field This invention mainly relates to commercial hot water storage type water heaters,
The present invention relates to a combustion switching control device for a pulse combustor used as a heating source in liquid heating equipment such as a fryer.
従来の技術
パルス燃焼器は、給気ブロア、給気マフラ等を
もつた給気機能部とバーナ、燃焼室、テールパイ
プ、排気マフラ等を備えた燃焼機能部からなり、
燃焼機能部の燃焼室、テールパイプ等を水槽又は
油槽内等に収納設置して、たとえば、貯湯式給湯
器、フライヤ等の液加熱用機器類の加熱源として
用いるものであるが、単独の燃焼機能部だけでは
そのバーナの燃焼量を変動させて能力調整を行う
ことはその機構上困難である。Conventional technology A pulse combustor consists of an air supply function section that includes an air supply blower, an air supply muffler, etc., and a combustion function section that includes a burner, a combustion chamber, a tail pipe, an exhaust muffler, etc.
The combustion chamber, tail pipe, etc. of the combustion function section are housed and installed in a water tank or oil tank, and are used as a heating source for liquid heating equipment such as hot water storage water heaters and fryers, but independent combustion Due to its mechanism, it is difficult to adjust the capacity by varying the combustion amount of the burner using only the functional parts.
そこで、パルス燃焼器において熱量変換による
能力調整を可能とするためには、燃焼機能部を２
組以上設置してこれらを任意に燃焼、休止させ熱
量変換による能力調整を行うものであるが、従来
のこの種のパルス燃焼器において給気機能部を複
数組の燃焼機能部に共用せしめたものにあつては
点火燃焼時における給気機能部の風量は一定量に
設定されている。 Therefore, in order to enable capacity adjustment by heat conversion in a pulse combustor, two combustion function parts are required.
In this type of conventional pulse combustor, the air supply function section is shared by the combustion function section of multiple sets. In this case, the air volume of the air supply function section during ignition combustion is set to a constant amount.
発明が解決しようとする問題点
しかし、上記従来のものは、点火時における給
気機能部の風量が一定量に設定されているため、
たとえば、第１図に示したように２組の燃焼機能
部Ａ，Ｂを備えたパルス燃焼器の燃焼切換制御に
おいて、片方の燃焼機能部Ａだけを燃焼させよう
とするときは給気機能部Ｆから双方の燃焼機能部
Ａ，Ｂへはともに設定風量Q1が送られるため
（第３図ａ参照）、その点火燃焼は確実に行われる
が、２組の燃焼機能部Ａ，Ｂの片方の燃焼機能部
Ａが燃焼中に休止している他方の燃焼機能部Ｂを
点火燃焼させようとするときは、第４図に例示し
たフローチヤートのもとに燃焼中の燃焼機能部Ａ
はすでに自燃しており、給気機能部Ｆは共用のた
め給気機能部Ｆの風量の大半が燃焼中の燃焼機能
部Ａに吸入されてしまい休止側の燃焼機能部Ｂへ
の供給風量Q2は設定風量Q1より著しく減少し
（第３図ｂ参照）、その点火が悪くなり、燃焼タイ
ミングがとれなくなる欠点があつた。Problems to be Solved by the Invention However, in the above conventional system, the air volume of the air supply function section is set to a fixed amount at the time of ignition.
For example, in the combustion switching control of a pulse combustor equipped with two sets of combustion function parts A and B as shown in Fig. 1, when only one combustion function part A is to be combusted, the air supply function Since the set air volume Q 1 is sent from F to both combustion function parts A and B (see Figure 3 a), the ignition combustion is reliably carried out, but one of the two combustion function parts A and B When the combustion function part A of the combustion function part A attempts to ignite and burn the other combustion function part B which is inactive during combustion, the combustion function part A which is currently in combustion is
has already self-combusted, and since the air supply function part F is shared, most of the air volume of the air supply function part F is taken into the combustion function part A which is in the process of combustion, and the supply air volume Q to the combustion function part B on the idle side is reduced. 2 was significantly lower than the set air volume Q 1 (see Figure 3b), which resulted in poor ignition and a drawback that combustion timing could not be determined.
そこで、この発明は、たとえば、片方の燃焼機
能部Ａが燃焼中に休止側の燃焼機能部Ｂを点火燃
焼するにあたり、給気機能部Ｆの風量を給気ブロ
ア１の回転数を増す等の手段で増量させて休止側
の燃焼機能部Ｂへの風量を設定風量Q1に保つこ
とにより（第３図ｃ参照）上記従来の欠点を解消
したパルス燃焼器の燃焼切換制御装置を提供する
ものである。 Therefore, the present invention has been developed by, for example, increasing the air volume of the air supply function part F by increasing the rotational speed of the air supply blower 1 when one combustion function part A ignites and burns the dormant combustion function part B while one combustion function part A is burning. To provide a combustion switching control device for a pulse combustor which eliminates the above-mentioned conventional drawbacks by increasing the amount of air by increasing the amount of air to the combustion function part B on the idle side to maintain the set air amount Q1 (see Fig. 3c). It is.
問題点を解決するための手段
この発明は前記問題点を解決するものであつ
て、以下にその内容を実施例に対応する第１図を
用いて説明する。Means for Solving the Problems This invention solves the above-mentioned problems, and the details thereof will be explained below using FIG. 1 corresponding to an embodiment.
給気ブロア１、給気マフラ２、給気導入路３等
を一連に備えた給気機能部Ｆをバーナ部４、燃焼
室５、テールパイプ６、排気マフラ７等を一連に
備えた２組の燃焼機能部Ａ，Ｂを共用せしめたパ
ルス燃焼器において、２組の燃焼機能部Ａ，Ｂの
片方の燃焼機能部Ａ又はＢが燃焼中に休止してい
る他方の燃焼機能部Ｂ又はＡを点火燃焼させるか
否かの検知手段と、該検知結果に基づき給気機能
部Ｆの給気ブロア１の回転数を増す等の手段をも
つて給気機能部Ｆの風量を該燃焼機能部Ｂ又はＡ
が単独燃焼するときの風量よりも増量させて燃焼
機能部Ｂ又はＡへの風量を設定風量Q1に保つこ
とによりその着火性を向上したものである。 Two sets include an air supply function section F, which includes an air supply blower 1, an air intake muffler 2, an air intake introduction passage 3, etc., and a burner section 4, a combustion chamber 5, a tail pipe 6, an exhaust muffler 7, etc. In a pulse combustor in which the combustion function parts A and B are shared, one combustion function part A or B of the two sets of combustion function parts A and B is inactive during combustion, and the other combustion function part B or A is inactive. The air volume of the air supply function section F is controlled by a means for detecting whether or not to ignite and burn the combustion function section, and a means for increasing the rotation speed of the air supply blower 1 of the air supply function section F based on the detection result. B or A
The ignitability is improved by increasing the air flow to the combustion function part B or A to the set air flow Q1 by increasing the air flow to the combustion function part B or A than when it burns alone.
作 用
２組の燃焼機能部Ａ，Ｂの片方の燃焼機能部Ａ
又はＢだけを点火燃焼させるときは、給気機能部
Ｆからの風量が燃焼機能部Ａ，Ｂに対しこれらが
燃焼するのに必要な設定風量Q1がともに送れる
ため（第３図ａ参照）その点火燃焼は確実に行わ
れるが、２組の燃焼機能部Ａ，Ｂの片方の燃焼機
能部Ａ又はＢが燃焼中（自燃中）に休止している
他方の燃焼機能部Ｂ又はＡを点火燃焼させようと
するときは、給気機能部Ｆの風量を給気ブロア１
の回転数を増す等の手段で該燃焼機能部Ｂ又はＡ
が単独燃焼するのに必要な風量よりも増量させて
給気機能部Ｆの風量が燃焼機能部Ａ又はＢに吸入
されてもその不足分を補い燃焼機能部Ｂ又はＡへ
の風量は該燃焼機能部Ｂ又はＡが燃焼するのに必
要な設定風量Q1に保たれるものである（第３図
ｃ参照）。Function One combustion function part A of two sets of combustion function parts A and B
Or, when only B is ignited and burned, the amount of air from supply air function part F can be sent to both combustion function parts A and B at the set air volume Q1 necessary for combustion of these parts (see Figure 3 a). The ignition combustion is reliably carried out, but one combustion function part A or B of the two sets of combustion function parts A and B ignites the other combustion function part B or A which is at rest during combustion (during self-combustion). When attempting to burn, the air volume of the air supply function section F is adjusted by the air supply blower 1.
the combustion function part B or A by means such as increasing the rotational speed of the
Even if the air volume of the supply air function part F is taken into the combustion function part A or B by increasing the air volume than that required for independent combustion, the deficiency is compensated for and the air volume to the combustion function part B or A is increased so that the air volume to the combustion function part B or A is increased. The set air volume Q 1 required for combustion of functional part B or A is maintained (see Figure 3c).
実施例
以下この発明の一実施例を図面に基づき説明す
る。Embodiment An embodiment of the present invention will be described below based on the drawings.
図面において、Ｆは給気機能部で、給気ブロア
１、給気マフラ２、給気導入路３、エアーチヤン
バ８からなり、点火燃焼時に駆動されて給気ブロ
ア１を回転し給気ブロア１からの風が給気マフラ
２を通つて給気導入路３からエアーチヤンバ８に
供給され、後述の燃焼機能部Ａ，Ｂのバーナ部４
の混合室４ａにデイスク式空気弁を介してエアー
チヤンバ８で充分均圧された適量の空気が強制給
気され、後述の点火プラグによる強制着火と相ま
つてバーナ部における燃焼が行われるもので、こ
の燃焼が正常に開始され併行運転に入ると給気機
能部Ｆからの強制給気は断たれ、以後は１サイク
ルごとに給気の自己吸入を行うようになつてい
る。Ａ，Ｂは燃焼機能部で、バーナ部４、燃焼室
５、テールパイプ６、排気マフラ７、排気管９か
らなり、バーナ部４の混合室４ａにガス導入管１
０からの燃料ガスがガスチヤンバ１１で充分均圧
されデイスク式ガス弁を介して１サイクルごとに
適量自動供給され、点火燃焼時においては上記給
気機能部Ｆからの強制給気と混合されて燃焼室５
で点火プラグによる強制着火によつて爆発燃焼
し、この燃焼が正常に開始され併行運転に入ると
点火プラグによる強制着火は停止されて以後は自
己着火し、連続燃焼するものである。実施例は２
組の燃焼機能部Ａ，Ｂを並列状に設け、これらの
燃焼機能部Ａ，Ｂに１つの給気機能部Ｆを共用せ
しめてこれらの点火燃焼時の強制給気に供してい
る。また、燃焼機能部Ａ，Ｂの燃焼室５、テール
パイプ６等を水槽又は油槽等の槽１２内に収納設
置して加熱源となすものである。前記給気機能部
Ｆには２組の燃焼機能部Ａ，Ｂの片方の燃焼機能
部Ａ又はＢが燃焼中に休止している他方の燃焼機
能部Ｂ又はＡを点火燃焼させようとするときだけ
該給気機能部Ｆの風量を休止している他方の燃焼
機能部Ｂ又はＡが単独燃焼するのに必要な風量よ
り増量させる手段を設けている。この増量手段と
しては点火燃焼時にだけコントロールボツクスか
らの指令で給気ブロア１の回転数をその制御モー
タＭを介して増すようにするのが構造上最も理想
的であるが、その他の増量手段を用いてもよい。 In the drawing, F is an air supply function unit, which consists of an air intake blower 1, an air intake muffler 2, an air intake passage 3, and an air chamber 8, which is driven at the time of ignition combustion to rotate the air intake blower 1. The air is supplied to the air chamber 8 from the air supply introduction path 3 through the air supply muffler 2, and is then supplied to the air chamber 8 from the air supply introduction path 3 to the burner sections 4 of combustion function sections A and B, which will be described later.
An appropriate amount of air whose pressure has been sufficiently equalized in the air chamber 8 is forcibly supplied to the mixing chamber 4a through a disk type air valve, and combustion in the burner section is performed together with forced ignition by the spark plug described later. When combustion starts normally and parallel operation begins, the forced air supply from the air supply function section F is cut off, and from then on, air supply is self-inhaled every cycle. A and B are combustion function parts, which are composed of a burner part 4, a combustion chamber 5, a tail pipe 6, an exhaust muffler 7, and an exhaust pipe 9.
The fuel gas from 0 is sufficiently pressure-equalized in the gas chamber 11 and is automatically supplied in an appropriate amount for each cycle via a disk gas valve, and at the time of ignition combustion, it is mixed with the forced air supply from the air supply function section F and combusted. Room 5
Explosive combustion occurs due to forced ignition by the spark plug, and when this combustion starts normally and parallel operation begins, the forced ignition by the spark plug is stopped, and thereafter self-ignition occurs, resulting in continuous combustion. Examples are 2
A pair of combustion function sections A and B are arranged in parallel, and one air supply function section F is shared by these combustion function sections A and B to supply forced air during ignition combustion. Further, the combustion chambers 5, tail pipes 6, etc. of the combustion function sections A and B are housed and installed in a tank 12 such as a water tank or an oil tank to serve as a heating source. The air supply function part F has two sets of combustion function parts A and B. When one combustion function part A or B is inactive during combustion, the other combustion function part B or A is to be ignited and burned. Means is provided to increase the air volume of the air supply function part F from that required for independent combustion of the other combustion function part B or A which is inactive. The most ideal means for increasing the amount is to increase the number of revolutions of the air supply blower 1 via the control motor M in response to a command from the control box only during ignition combustion, but other means for increasing the amount may be used. May be used.
上記構成において、パルス燃焼は点火燃焼時に
おいて給気機能部Ｆの給気ブロア１をコントロー
ルボツクスからの指令で回転し、該給気ブロア１
からの風を給気マフラ２から給気導入路３を介し
てエアーチヤンバ８に供給し、該エアーチヤンバ
８で充分均圧された適量の空気をバーナ部４の混
合室４ａにデイスク式空気弁を介して供給し、一
方、ガス導入管１０からの燃料ガスはガスチヤン
バ１１で充分均圧されデイスク式ガス弁を介して
バーナ部４の混合室４ａへ適量供給され、その混
合気が燃焼室５に至るとコントロールボツクスか
らの指令で燃焼室５内の点火プラグ５ａからスパ
ークを飛ばしこれに強制着火し爆発燃焼せしめる
ものであるが、この強制給気及び強制着火による
爆発燃焼が正常に開始されると給気ブロア１の回
転を停止し強制給気を断つて給気の自己吸入を行
うと同時に点火プラグによる強制着火も停止させ
て自己着火に移り以後は毎秒略60〜150回の給気、
点火爆発、膨脹、排気のサイクルを繰返しながら
連続燃焼するものである。 In the above configuration, during pulse combustion, the intake air blower 1 of the intake air function section F is rotated by a command from the control box during ignition combustion, and the intake air blower 1
The air is supplied from the air supply muffler 2 to the air chamber 8 via the air supply introduction path 3, and an appropriate amount of air whose pressure is sufficiently equalized in the air chamber 8 is supplied to the mixing chamber 4a of the burner section 4 via a disc type air valve. On the other hand, the fuel gas from the gas introduction pipe 10 is sufficiently pressure-equalized in the gas chamber 11 and is supplied in an appropriate amount to the mixing chamber 4a of the burner section 4 via the disc type gas valve, and the mixture reaches the combustion chamber 5. In response to a command from the control box, a spark is ejected from the spark plug 5a in the combustion chamber 5, causing it to be forcibly ignited and explosively combusted. The rotation of the air blower 1 is stopped, the forced air supply is cut off, and the air intake is self-inhaled. At the same time, the forced ignition by the spark plug is also stopped, and the self-ignition is started. After that, the air intake is approximately 60 to 150 times per second.
It burns continuously by repeating the cycle of ignition, explosion, expansion, and exhaust.
次に、２組の燃焼機能部Ａ，Ｂの片方の燃焼機
能部Ａが燃焼中に休止している他方の燃焼機能部
Ｂを点火燃焼させようとするときは、給気機能部
Ｆの給気ブロア１を駆動するにあたり、その回転
数をコントロールボツクスからの指令で増して給
気機能部Ｆの風量を燃焼機能部Ｂが単独燃焼する
のに必要な風量よりも増量せしめ給気機能部Ｆの
風量が燃焼中の燃焼機能部Ａに吸入されても燃焼
機能部Ｂへの風量は該燃焼機能部Ｂが正常燃焼す
るのに必要な設定風量Q1に保たれ、その点火燃
焼が円滑、確実に行われるものである。 Next, when one combustion function part A of the two sets of combustion function parts A and B attempts to ignite and burn the other combustion function part B which is inactive during combustion, the air supply function part F is When driving the air blower 1, the number of rotations thereof is increased by a command from the control box to increase the air volume of the air supply function part F to be greater than the air volume required for combustion function part B to perform combustion independently. Even if the amount of air is drawn into the combustion function part A during combustion, the air volume to the combustion function part B is maintained at the set air volume Q1 necessary for normal combustion in the combustion function part B, and the ignition combustion is smooth. This will definitely be done.
上記給気ブロア１の回転数を増すことによる風
量の増量分は実験によれば略20％位が最も適当で
あつた。すなわち、制御モータＭによる給気ブロ
ア１の回転数を点火燃焼の際1.2倍に上昇させて
点火燃焼せしめると、休止中の燃焼機能部Ｂ側へ
その全体の風量のおよそ5/12が供給されることが
実験で確められた。よつて、休止側の燃焼機能部
Ｂへの空気供給量は、
給気ブロアによる風量×1.2×５／12＝給気ブロア
による風量×0.5となり、片方の燃焼機能部Ａが
燃焼中であつてもこれが燃焼していない場合と同
条件となつて安定した燃焼開始が可能となる。な
お、この増量分は燃焼室５の構造によつては多少
の差があり、型式ごとに実験的に最適値を選定す
るものである。 According to experiments, the most appropriate increase in air volume by increasing the rotational speed of the air supply blower 1 is about 20%. That is, when the rotational speed of the air supply blower 1 by the control motor M is increased by 1.2 times during ignition combustion to cause ignition combustion, approximately 5/12 of the total air volume is supplied to the combustion function part B side that is inactive. This was confirmed through experiments. Therefore, the amount of air supplied to combustion function part B on the idle side is air volume by air supply blower x 1.2 x 5/12 = air volume by air supply blower x 0.5, and one combustion function part A is in combustion. This becomes the same condition as when no combustion is occurring, and stable combustion can be started. Note that this amount of increase varies somewhat depending on the structure of the combustion chamber 5, and the optimum value is selected experimentally for each type.
上記した片方の燃焼機能部Ａが燃焼中に休止し
ている他方の燃焼機能部Ｂに点火燃焼させるとき
の一連の動作の一例を第２図のフローチヤートに
基づき説明すると、片方の燃焼機能部Ａが燃焼中
に休止中の他方の燃焼機能部Ｂに点火燃焼させる
場合を燃焼室５に臨ましめたフレームロツド５ｂ
によつて火炎の有無で検知したら、まず、給気ブ
ロア１を駆動し（フアン駆動）、その回転数を片
方の燃焼機能部だけを点火燃焼させるときの回転
数より予め決められた回転数たとえば、20％だけ
増加せしめる（フアン駆動増加）。このフアン駆
動増加状態でプリパージを行う。ここに、プリパ
ージとは燃焼機能部Ｂに残る排ガス、未燃ガス等
を当初の給気圧で強制的に器外へ吹き飛ばし排除
することをいい、その後の給気を燃焼機能部Ｂの
点火燃焼時の燃焼用空気として引続き使用する。
しかして、休止側の燃焼機能部Ｂの排ガス等が燃
焼継続側へ逆流しないものである。（片方の燃焼
機能部が燃焼中でない場合を前記フレームロツド
で検知したら、上記フアン駆動増加は行われず、
通常の風量でフアンは駆動される）。プリパージ
完了後、休止側の燃焼機能部Ｂにガス導入管１０
からの燃料ガスを供給し（休止側のガス供給）、
イグナイタを起動して点火プラグからスパークを
飛ばし（休止側のイグナイタ点火）、この点火動
作を１〜数回くり返し、正常燃焼が開始され、火
炎をチエツクすると、イグナイタ及びフアン駆動
をOFFして自己着火による連続燃焼に移行し併
行運転に入るものである。この場合休止側への空
気供給量は、予めフアンの回転数を20％増加せし
めてあるので、他の燃焼機能部が燃焼中でも、そ
の影響を受けて休止側への空気供給量は通常の単
独燃焼開始時の空気量（フアンの全空気供給量の
１／２）に等しくなつて、点火燃焼は円滑に行われ
ることになる。 An example of a series of operations when one combustion function part A ignites and burns the other combustion function part B, which is inactive during combustion, will be explained based on the flowchart of FIG. 2. A flame rod 5b is shown in the combustion chamber 5 in which the other combustion function part B, which is inactive, is ignited and burned during combustion.
If the presence or absence of flame is detected by the , first, the supply air blower 1 is driven (fan drive), and its rotational speed is set to a predetermined rotational speed, for example, from the rotational speed when only one combustion function section is ignited and burned. , increases by 20% (fan drive increase). Prepurge is performed in this increased fan drive state. Here, pre-purge refers to forcibly blowing off the exhaust gas, unburned gas, etc. remaining in the combustion function section B to the outside of the device at the initial supply pressure, and then using the subsequent supply air to ignite and burn the combustion function section B. will continue to be used as combustion air.
Therefore, the exhaust gas etc. from the combustion function section B on the idle side does not flow back to the combustion continuing side. (If the flame rod detects that one combustion function part is not in combustion, the fan drive increase will not be performed,
(The fan is driven with normal airflow). After completing the pre-purge, connect the gas introduction pipe 10 to the combustion function section B on the idle side.
Supply fuel gas from (stop side gas supply),
Start the igniter and blow the spark from the spark plug (igniter ignition on the idle side), repeat this ignition operation once or several times, and when normal combustion starts and the flame is checked, turn off the igniter and fan drive and self-ignite. The system switches to continuous combustion and enters parallel operation. In this case, the amount of air supplied to the idle side is increased by increasing the rotation speed of the fan by 20% in advance, so even if other combustion function parts are burning, the amount of air supplied to the idle side will be reduced to the normal independent level. Since the amount of air is equal to the amount of air at the start of combustion (1/2 of the total amount of air supplied by the fan), ignition combustion is carried out smoothly.
発明の効果
この発明は以上説明したように、給気機能部を
複数組の燃焼機能部に共用せしめたものにおい
て、複数組の燃焼機能部の少なくとも１つが燃焼
中に休止している他の燃焼機能部を点火燃焼する
にあたり、給気機能部の風量を燃焼タイミングに
応じて増量させることによりその着火性がよくな
り、パルス燃焼の切換制御が円滑、確実に行いう
る効果がある。Effects of the Invention As explained above, the present invention has an air supply function section shared by a plurality of sets of combustion function sections, in which at least one of the plurality of sets of combustion function sections is inactive during combustion. When the functional part is ignited and burned, increasing the air flow rate of the air supply functional part in accordance with the combustion timing improves the ignitability, and has the effect of smoothly and reliably performing pulse combustion switching control.
第１図はこの発明の一実施例を示した概略構成
図、第２図は片方が燃焼中に他方を点火燃焼させ
るときのフローチヤート、第３図は複数組の燃焼
機能部に対する給気機能部からの供給風量の関係
を示したグラフ、第４図は従来例のフローチヤー
トである。
１……給気ブロア、Ｆ……給気機能部、４……
バーナ、５……燃焼室、６……テールパイプ、
Ａ，Ｂ……燃焼機能部。
Fig. 1 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 2 is a flowchart when one side is ignited and burned while the other is ignited, and Fig. 3 is an air supply function for multiple sets of combustion function parts. FIG. 4 is a flowchart of a conventional example, which is a graph showing the relationship between the amount of air supplied from the pump. 1... Air supply blower, F... Air supply function section, 4...
Burner, 5... Combustion chamber, 6... Tail pipe,
A, B... Combustion function section.
Claims (1)
燃焼室、テールパイプ等を備えた複数組の燃焼機
能部に共用せしめたパルス燃焼器において、該給
気機能部に複数組の燃焼機能部の少なくとも１つ
が燃焼中に休止している燃焼機能部を点火燃焼さ
せるか否かの検知手段と、該検知結果に基づき給
気機能部の風量を休止している燃焼機能部が単独
燃焼するのに必要な風量よりも増量させる手段と
を設けたことを特徴とするパルス燃焼器の燃焼切
換制御装置。1 The air supply function section with the air supply blower etc. is connected to the burner,
In a pulse combustor shared by a plurality of sets of combustion function parts each having a combustion chamber, a tail pipe, etc., a combustion function part in which at least one of the plurality of sets of combustion function parts is inactive during combustion in the air supply function part. A means for detecting whether or not to ignite and burn the fuel, and a means for increasing the air volume of the air supply function section based on the detection result beyond that required for independent combustion of the combustion function section which is inactive. A combustion switching control device for a pulse combustor, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62086503A JPS63251721A (en) | 1987-04-08 | 1987-04-08 | Combustion switching control device of pulsating burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62086503A JPS63251721A (en) | 1987-04-08 | 1987-04-08 | Combustion switching control device of pulsating burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63251721A JPS63251721A (en) | 1988-10-19 |
| JPH0578725B2 true JPH0578725B2 (en) | 1993-10-29 |
Family
ID=13888782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62086503A Granted JPS63251721A (en) | 1987-04-08 | 1987-04-08 | Combustion switching control device of pulsating burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63251721A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01310205A (en) * | 1988-06-07 | 1989-12-14 | Paloma Ind Ltd | Pulse burner |
| JP2943872B2 (en) * | 1989-08-22 | 1999-08-30 | 株式会社東芝 | Dual pulse combustion device |
-
1987
- 1987-04-08 JP JP62086503A patent/JPS63251721A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63251721A (en) | 1988-10-19 |
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