JPH0517345U - Combustion control device - Google Patents
Combustion control deviceInfo
- Publication number
- JPH0517345U JPH0517345U JP5900991U JP5900991U JPH0517345U JP H0517345 U JPH0517345 U JP H0517345U JP 5900991 U JP5900991 U JP 5900991U JP 5900991 U JP5900991 U JP 5900991U JP H0517345 U JPH0517345 U JP H0517345U
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- valve
- control valve
- burner
- main valve
- 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
Landscapes
- Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
(57)【要約】
【構成】 バーナユニット３のうちの所定のバーナ
３2、３3を燃焼調節弁９により消火し得るようにし、該
弁９の開弁と閉弁とによりバーナユニット３の燃焼量を
強弱２段に切換える。弱燃焼への切換時に、弁９の故障
等でバーナ３2、３3が消火せず、該バーナに臨ませた燃
焼検知手段１３2、１３3の出力が低下しないときは、制
御回路１１により主弁８を閉弁すると共に警報手段１４
を作動させる。
【効果】 弱燃焼への切換えが不能になっても、主弁の
閉弁で燃焼を停止でき、更に警報手段により異常の発生
を報知して適切な事後対策を講ずることができ、安全で
ある。
(57) [Summary] [Structure] The predetermined burners 3 2 and 3 3 of the burner unit 3 can be extinguished by the combustion control valve 9, and the opening and closing of the valve 9 allows the burner unit 3 to operate. The combustion amount is switched between strong and weak. If the burners 3 2 , 3 3 do not extinguish due to a failure of the valve 9 or the like and the output of the combustion detection means 13 2 , 13 3 exposed to the burner does not decrease at the time of switching to the weak combustion, the control circuit 11 causes The main valve 8 is closed and an alarm means 14 is provided.
Operate. [Effect] Even if it becomes impossible to switch to weak combustion, the combustion can be stopped by closing the main valve, and the alarm means can be used to notify the occurrence of an abnormality and take appropriate post-measures, which is safe. .
Description
【０００１】[0001]
本考案は、バーナユニットへのガス供給路に主弁とその下流側の燃焼調節弁と を介設し、該調節弁により燃焼量を調節するようにした燃焼制御装置に関する。 The present invention relates to a combustion control device in which a main valve and a combustion control valve downstream thereof are provided in a gas supply path to a burner unit, and the combustion amount is controlled by the control valve.
【０００２】[0002]
従来、暖房機等の燃焼装置において、複数のバーナから成るバーナユニットを 設け、主弁を介設したガス供給路を主弁の下流側で分岐して各バーナにガスを供 給すると共に、分岐路に開閉式の燃焼調節弁を介設して、該弁の開閉によりバー ナユニットの燃焼量を段階的に調節するものが知られている。 又、バーナユニットを１個のバーナで構成し、このバーナに主弁とその下流側 の比例式燃焼調節弁とを介してガスを供給し、調節弁によって燃焼量を無段階に 調節するものも知られている。 Conventionally, in a combustion device such as a heater, a burner unit including a plurality of burners has been provided, and a gas supply passage having a main valve is branched at a downstream side of the main valve to supply gas to each burner. It is known that an open / close type combustion control valve is provided in the passage and the combustion amount of the burner unit is adjusted stepwise by opening / closing the valve. Further, there is also one in which the burner unit is composed of one burner, and gas is supplied to this burner through a main valve and a proportional combustion control valve on the downstream side thereof, and the combustion amount is adjusted steplessly by the control valve. Are known.
【０００３】[0003]
上記燃焼装置において、燃焼調節弁が故障によって開き側に拘束されたままに なると、燃焼量を減少できなくなって負荷温度、例えば暖房機の場合は室温が、 設定温度以上に上昇してしまう。 従来、失火時にガス供給を断って生ガスの放出を防止する安全対策は講じられ ているが、燃焼調節弁の開き側への拘束という異常についての考慮は払われてお らず、かかる異常に対しての安全対策を講ずることが望まれる。 本考案は、かかる要望に適合した装置を提供することをその目的としている。 In the above combustion device, if the combustion control valve remains restricted to the open side due to a failure, the combustion amount cannot be reduced and the load temperature, for example, in the case of a heating machine, the room temperature rises above the set temperature. Conventionally, safety measures have been taken to prevent the release of raw gas by cutting off the gas supply at the time of a misfire, but no consideration has been given to the anomaly of restraint of the combustion control valve on the open side. It is desirable to take safety measures against it. It is an object of the present invention to provide a device that meets this need.
【０００４】[0004]
上記目的を達成すべく、本考案は、バーナユニットへのガス供給路に主弁とそ の下流側の燃焼調節弁とを介設し、該調節弁により燃焼量を調節するものにおい て、バーナユニットの燃焼状態を検知する燃焼検知手段と、異常状態を報知する 警報手段と、燃焼調節弁を閉じ側に作動させるとき、燃焼検知手段によって燃焼 量の減少が検知されない場合に主弁を閉弁すると共に警報手段を作動させる制御 手段とを設けたことを特徴とする。 In order to achieve the above object, the present invention relates to a burner in which a main valve and a combustion control valve on the downstream side are provided in a gas supply path to a burner unit, and the combustion amount is controlled by the control valve. Combustion detection means for detecting the combustion state of the unit, alarm means for notifying an abnormal state, and when the combustion control valve is actuated to the closed side, the main valve is closed when the combustion detection means does not detect a decrease in the combustion amount. In addition, the control means for activating the alarm means is provided.
【０００５】[0005]
燃焼調節弁を閉じ側に作動させるとき、該調節弁が正常に動いて燃焼量が減少 された場合は、燃焼検知素子が燃焼量の減少を検知し、減少を示す信号が制御手 段に入力されるが、燃焼調節弁が故障で閉じ側に動かない場合は、燃焼検知素子 からの信号は変化せず、そのため制御手段により主弁が閉じられて燃焼が停止さ れ、更に警報手段が作動して異常の発生が報知される。 When the combustion control valve is operated to the closing side and the control valve operates normally and the combustion amount is decreased, the combustion detection element detects the decrease in the combustion amount and a signal indicating the decrease is input to the control means. However, if the combustion control valve fails to move to the closing side due to a failure, the signal from the combustion detection element does not change, so the control means closes the main valve to stop combustion and activates the alarm means. Then, the occurrence of abnormality is notified.
【０００６】[0006]
本考案を温風暖房機に適用した実施例について説明する。 図１を参照して、１は温風暖房機の機体を示し、該機体１内に燃焼筺２を設け てこれに赤外線式のバーナユニット３を装着し、バーナユニット３からの赤外線 を機体１の前方に放射すると共に、バーナユニット３からの燃焼排気を燃焼筺２ の上部の排気口２ａに導き、機体１内の上部に設けたファン４により機体１の前 面上部の温風吹出口５から室内に送風するようにした。 An embodiment in which the present invention is applied to a warm air heater will be described. Referring to FIG. 1, reference numeral 1 denotes a body of a warm air heater, a combustion casing 2 is provided in the body 1, an infrared type burner unit 3 is attached to the combustion casing 2, and infrared rays from the burner unit 3 are emitted from the body 1 Of the burner unit 3 is guided to the exhaust port 2a at the upper part of the combustion casing 2, and is blown from the hot air outlet 5 at the upper part of the front face of the body 1 by the fan 4 provided at the upper part of the body 1. I tried to blow it indoors.
【０００７】 バーナユニット３は、図２に示すように、中間の第１バーナ３1とその両側の 第２と第３のバーナ３2、３3とで構成されており、ガス供給路６に元弁７とその 下流の主弁８とを介設すると共に、ガス供給路６を主弁８の下流側で二股に分岐 して、一方の分岐路６1を介して第１バーナ３1にガスを供給し、他方の分岐路６ 2 に開閉式の燃焼調節弁９を介設して、第２第３バーナ３2、３3に該調節弁９を 介してガスを供給し、バーナユニット３の燃焼状態を、該調節弁９を開いて全て のバーナ３1、３2、３3を燃焼させる強燃焼と、該調節弁９を閉じて第１バーナ ３1のみを燃焼させる弱燃焼とに切換自在とした。尚、分岐路６1には常火パイロ ットバーナ１０が接続されている。As shown in FIG. 2, the burner unit 3 includes an intermediate first burner 31And the second and third burners 3 on both sides2Three3The main valve 7 and the main valve 8 downstream of the main valve 7 are provided in the gas supply path 6, and the gas supply path 6 is bifurcated on the downstream side of the main valve 8 so that one branch Road 61Through the first burner 31Gas to the other branch 6 2 The open / close combustion control valve 9 is installed in the second third burner 32Three3Gas is supplied to the burner unit 3 through the control valve 9 to check the combustion state of the burner unit 3 by opening the control valve 9.1Three2Three3And the first burner 3 by closing the control valve 91It can be switched to weak combustion, which burns only one. In addition, branch road 61A permanent fire pilot burner 10 is connected to the.
【０００８】 図中１１は前記各弁７、８、９を開閉制御するマイクロコンピュータから成る 制御回路であり、該回路１１にサーミスタ等から成る室温検知器１２からの信号 を入力して、設定温度と室温との偏差に応じて燃焼調節弁９を開閉するようにし 、更に常火バーナ１０に臨ませた第１熱電対１３1と第２第３バーナ３2、３3に 臨ませた第２第３熱電対１３2、１３3との出力信号を該回路１１に入力し、常火 パイロットバーナ１０の失火で第１熱電対１３1の出力が低下したとき元弁７を 閉じて生ガスの放出を防止し、又弱燃焼時に燃焼調節弁９を閉弁する信号を出力 しているにもかかわらず、第２第３熱電対１３2、１３3の出力が低下しないとき 、主弁８を閉弁すると共に、異常状態を報知するランプ等の警報手段１４を作動 させるようにした。Reference numeral 11 in the figure is a control circuit composed of a microcomputer for controlling the opening and closing of each of the valves 7, 8 and 9, and a signal from a room temperature detector 12 composed of a thermistor or the like is inputted to the circuit 11 to set a temperature. The combustion control valve 9 is opened / closed according to the deviation between the room temperature and the room temperature, and the first thermocouple 13 1 facing the normal-fire burner 10 and the second thermocouple 13 2 facing the second-third burner 3 2 , 3 3 . The output signals of the third thermocouples 13 2 and 13 3 are input to the circuit 11, and when the output of the first thermocouple 13 1 decreases due to the misfire of the pilot burner 10 for normal fire, the main valve 7 is closed and raw gas When the outputs of the second and third thermocouples 13 2 and 13 3 are not reduced even though the signals for preventing the release and for closing the combustion control valve 9 at the time of weak combustion are output, the main valve 8 is turned on. The valve is closed and the alarm means 14 such as a lamp for informing an abnormal state is activated. I was allowed to.
【０００９】 弱燃焼時の異常検知プログラムは図３に示す通りであり、Ｓ１のステップで強 燃焼から弱燃焼への切換えを判別したとき、Ｓ２のステップに進んで燃焼調節弁 ９の閉弁信号を出力すると共にＳ３のステップに進んでタイマの計時動作をスタ ートし、Ｓ４のステップで第２第３熱電対１３2、１３3の出力ＴＶが共に所定値 Ｖｓを下回ったか否かを判別する。ＴＶ≧ＶｓのときはＳ５のステップに進んで タイマの計時開始から設定時間（例えば６０秒）経過したか否かを判別し、熱電 対出力ＴＶが所定値Ｖｓ以上であっても設定時間経過前はＳ４とＳ５とでの判別 処理を繰返し、ＴＶ＜ＶｓになったときＳ４のステップからＳ６のステップに進 んで通常の制御を行なう。一方、ＴＶ≧Ｖｓのまま設定時間が経過したときは、 Ｓ５のステップからＳ７のステップに進んで主弁８を閉弁すると共にＳ８のステ ップに進んで警報手段１４を作動する。かくて、閉弁信号が出力されても燃焼調 節弁９が閉弁しない異常時には、主弁８の閉弁によって燃焼が停止されると共に 警報手段１４により異常が報知される。The abnormality detection program at the time of weak combustion is as shown in FIG. 3, and when it is determined in step S1 that the switching from strong combustion to weak combustion is determined, the process proceeds to step S2 and the closing signal of the combustion control valve 9 is output. Is output and the process proceeds to the step S3 to start the time counting operation of the timer, and in the step S4, it is determined whether or not the output TVs of the second and third thermocouples 13 2 and 13 3 both fall below the predetermined value Vs. To do. When TV ≧ Vs, the process proceeds to step S5, and it is determined whether or not a set time (for example, 60 seconds) has elapsed from the start of the time measurement by the timer. Even if the thermocouple output TV is equal to or higher than the predetermined value Vs, the set time has not yet elapsed. Repeats the determination process in S4 and S5, and when TV <Vs, proceeds from step S4 to step S6 to perform normal control. On the other hand, when the set time has elapsed with TV ≧ Vs, the process proceeds from step S5 to step S7 to close the main valve 8 and to step S8 to activate the alarm means 14. Thus, when the combustion control valve 9 does not close even if the valve closing signal is output, the combustion is stopped by closing the main valve 8 and the alarm means 14 notifies the abnormality.
【００１０】 上記の如く、燃焼調節弁９の閉弁信号出力後、ＴＶ≧Ｖｓであっても所定の設 定時間が経過するまで主弁８を閉弁しないのは、閉弁信号の出力で燃焼調節弁９ が正常に閉じられて第２第３バーナ３2、３3が消火されても、第２第３熱電対１ ３2、１３3が冷却されてその出力が低下するのに時間がかかるためであり、この 場合燃焼検知手段として熱電対に代えてフレームロッドを用いれば、閉弁信号の 出力後フレームロッドの信号が変化しないとき直ちに主弁８を閉弁しても良い。 又、バーナユニットが単一のバーナで構成され、比例式の燃焼調節弁で燃焼量 の調節を行なう場合、或は上記実施例の開閉式燃焼調節弁９を比例式の弁として 第２第３バーナ３2、３3の燃焼量を調節する場合、燃焼検知手段として燃焼量に 応じた起電力を発生する熱電対等の熱発電素子を用い、燃焼調節弁を燃焼量減少 方向に作動する信号が出力されても熱発電素子の出力が低下しないときに主弁を 閉じて燃焼を停止するようにしても良く、更にはバーナユニットを構成する単一 のバーナを開閉式の燃焼調節弁によりオンオフ制御して温調を行なう場合にも本 考案を適用できる。As described above, after the valve closing signal of the combustion control valve 9 is output, the main valve 8 is not closed until a predetermined set time elapses even if TV ≧ Vs is due to the output of the valve closing signal. Even if the combustion control valve 9 is normally closed and the second and third burners 3 2 and 3 3 are extinguished, it takes time for the second and third thermocouples 1 3 2 and 13 3 to cool and their output to drop. In this case, if the flame rod is used as the combustion detecting means instead of the thermocouple, the main valve 8 may be closed immediately after the signal of the frame rod does not change after the output of the valve closing signal. Further, when the burner unit is composed of a single burner and the combustion amount is adjusted by a proportional combustion control valve, or the open-close type combustion control valve 9 of the above embodiment is used as a proportional valve. When adjusting the combustion amount of the burners 3 2 and 3 3 , a thermoelectric generator such as a thermocouple that generates an electromotive force according to the combustion amount is used as the combustion detection means, and a signal for operating the combustion control valve in the combustion amount decreasing direction is provided. When the output of the thermoelectric generator does not decrease even if it is output, the main valve may be closed to stop combustion, and a single burner that constitutes the burner unit may be turned on / off by an open / close combustion control valve. The present invention can be applied to the case where the temperature control is performed.
【００１１】[0011]
以上の説明から明らかなように、本考案によれば、燃焼調節弁の故障等によっ て燃焼量を減少できなかったとき、主弁を閉じて燃焼を停止でき、更に警報手段 により異常の発生を報知して適切な事後対策を講ずることができ、安全である。 As is apparent from the above description, according to the present invention, when the combustion amount cannot be reduced due to a failure of the combustion control valve, the main valve can be closed to stop the combustion, and the alarm means causes an abnormality. It is safe to notify you and take appropriate post-procedures.
【図１】 本案装置を適用した温風暖房機の断面図FIG. 1 is a cross-sectional view of a warm air heater to which the device of the present invention is applied.
【図２】 本案装置の一例の制御系の系統線図FIG. 2 is a system diagram of a control system as an example of the proposed device.
【図３】 その制御プログラムを示すフローチャートFIG. 3 is a flowchart showing the control program.
３ バーナユニット ６ ガス供給
路 ８ 主弁 ９ 燃焼調節
弁 １１ 制御回路（制御手段） １３2、１３3 熱電対
（燃焼検知手段） １４ 警報手段3 Burner Unit 6 Gas Supply Path 8 Main Valve 9 Combustion Control Valve 11 Control Circuit (Control Means) 13 2 , 13 3 Thermocouple (Combustion Detection Means) 14 Alarm Means
Claims (1)
その下流側の燃焼調節弁とを介設し、該調節弁により燃
焼量を調節するものにおいて、バーナユニットの燃焼状
態を検知する燃焼検知手段と、異常状態を報知する警報
手段と、燃焼調節弁を閉じ側に作動させるとき、燃焼検
知手段によって燃焼量の減少が検知されない場合に主弁
を閉弁すると共に警報手段を作動させる制御手段とを設
けたことを特徴とする燃焼制御装置。1. A combustion system for detecting a combustion state of a burner unit in which a main valve and a combustion control valve downstream thereof are provided in a gas supply path to the burner unit and the combustion amount is regulated by the control valve. Control for actuating the detection means, the alarm means for notifying an abnormal condition, and the operation of closing the main valve and actuating the alarm means when the combustion detection valve does not detect a decrease in the combustion amount when the combustion control valve is actuated to the closing side. And a combustion control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5900991U JPH0517345U (en) | 1991-07-26 | 1991-07-26 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5900991U JPH0517345U (en) | 1991-07-26 | 1991-07-26 | Combustion control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0517345U true JPH0517345U (en) | 1993-03-05 |
Family
ID=13100866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5900991U Pending JPH0517345U (en) | 1991-07-26 | 1991-07-26 | Combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517345U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263016A (en) * | 1984-06-11 | 1985-12-26 | Hanshin Electric Co Ltd | Safety device for combustion |
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JPS63108114A (en) * | 1986-05-07 | 1988-05-13 | Rinnai Corp | Combustion device |
-
1991
- 1991-07-26 JP JP5900991U patent/JPH0517345U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263016A (en) * | 1984-06-11 | 1985-12-26 | Hanshin Electric Co Ltd | Safety device for combustion |
| JPS63108114A (en) * | 1986-05-07 | 1988-05-13 | Rinnai Corp | Combustion device |
| JPS6349625A (en) * | 1986-08-20 | 1988-03-02 | Matsushita Electric Ind Co Ltd | Combustion control device |
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