JPS61259023A - Safety device for combustion unit - Google Patents
Safety device for combustion unitInfo
- Publication number
- JPS61259023A JPS61259023A JP60100038A JP10003885A JPS61259023A JP S61259023 A JPS61259023 A JP S61259023A JP 60100038 A JP60100038 A JP 60100038A JP 10003885 A JP10003885 A JP 10003885A JP S61259023 A JPS61259023 A JP S61259023A
- Authority
- JP
- Japan
- Prior art keywords
- burner
- safety valve
- combustion
- turned
- thermocouple
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ガス湯沸器その他の燃焼器に不完全燃焼検知
素子を組込んで不完全燃焼に対する安全策を施すように
した燃焼器の安全装置に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a combustor that incorporates an incomplete combustion detection element into a gas water heater or other combustor to provide a safety measure against incomplete combustion. Regarding safety equipment.
（従来の技術）
従来のこの種装置として、第４図に示すように、バーナ
（ａ）へのガス供給路（ｂ）に電磁安全弁（Ｃ）を介設
し、該安全弁（Ｃ）の作動ソレノイド（ｄ）を電源（ｅ
）に接続して該安全弁（Ｃ）の駆動回路（ｆ）を構成し
、該駆動回路（ｆ）に、ＣＯセンサ（ｇ）の出力変化に
よりオン／・オフするトランジスタ（ｈ）を介設して、
ｃｏ′ｍ度が異常な値になると、該ＣＯセンサ（０）の
抵抗値が極端に低下して該トランジスタ（ｈ）がオフし
、該安全弁（Ｃ）が閉弁して、該バーナ（ａ）の燃焼が
停止されるようにしたものは知られる。(Prior art) As shown in FIG. 4, a conventional device of this type includes an electromagnetic safety valve (C) interposed in the gas supply path (b) to the burner (a), and the operation of the safety valve (C). Connect the solenoid (d) to the power supply (e
) to form a drive circuit (f) for the safety valve (C), and a transistor (h) that is turned on/off depending on changes in the output of the CO sensor (g) is interposed in the drive circuit (f). hand,
When the CO'm degree reaches an abnormal value, the resistance value of the CO sensor (0) is extremely reduced, the transistor (h) is turned off, the safety valve (C) is closed, and the burner (a) is turned off. ) is known.
（発明が解決しようとする問題点）
しかしながら上記従来のものは、該電源（ｅ）を熱電素
子たる熱発電素子で構成したもので、該バーナ（ａ）で
加熱されて１個の熱発電素子から発生される起電力は０
．２Ｖ程度と小ざく、これにより該安全弁（Ｃ）を閉弁
させるには１０個程度直列に接続しなければならず、装
置全体が大きくなって好ましくない。そこで、該熱発電
素子の代りに乾電池を用いることら考えられるが、この
場合には該バーナ（ａ）の燃焼が停止していてもＣ０濃
度が正常の値であれば、該トランジスタ（ｈ）がオンし
て該安全弁（Ｃ）が開弁されて、ガス洩れを生じると共
に該乾電池が消耗してしまう不都合がある。(Problems to be Solved by the Invention) However, in the above conventional system, the power source (e) is composed of a thermoelectric element, which is a thermoelectric element, and when heated by the burner (a), one thermoelectric element is generated. The electromotive force generated from
．． The voltage is small, about 2V, and therefore, in order to close the safety valve (C), it is necessary to connect about 10 of them in series, which makes the entire device undesirably large. Therefore, it is conceivable to use a dry battery instead of the thermoelectric generating element, but in this case, even if the combustion of the burner (a) has stopped, if the CO concentration is at a normal value, the transistor (h) When the safety valve (C) is turned on, the safety valve (C) is opened, resulting in gas leakage and the dry battery being consumed.
（問題点を解決するための手段）
本発明はバーナの燃焼が停止している場合には作動する
ことのない小型の安全装置を提供することをその目的と
するもので、バーナへの燃料供給路に介設した電磁安全
杯の作動ソレノイドを電源に接続して該電磁安全弁の駆
動回路を構成し、該駆動回路に、ＣＯセンサその他の不
完全燃焼検知素子の出力変化により開閉する第１制御ス
イツヂを介設するものにおいて、該電源を乾電池その他
の直流電源で構成し、該駆動回路に該バーナに臨ませた
熱電素子の出力変化により開閉する第２制御スイッチを
介設したことを特徴とする。(Means for Solving the Problems) An object of the present invention is to provide a small safety device that does not operate when the combustion of the burner is stopped. A drive circuit for the electromagnetic safety valve is configured by connecting an operating solenoid of an electromagnetic safety cup installed in the road to a power source, and a first control that opens and closes according to changes in the output of a CO sensor or other incomplete combustion detection element. In the device in which a switch is provided, the power source is composed of a dry cell or other DC power source, and the drive circuit is provided with a second control switch that opens and closes according to changes in the output of a thermoelectric element facing the burner. do.
（実施例） 次に本発明装置を図示の実施例に基づいて説明する。(Example) Next, the apparatus of the present invention will be explained based on the illustrated embodiment.
第１図において、（１）はバーナ（りへの燃料供給路た
るガス供給路（３）に介設した電磁安全弁、（４）は直
流電源たる乾電池を示し、該安全弁（１）の作動ソレノ
イド（１ａ）の１端と該乾電池（４）のプラス極とを、
第１制御スイッチたるトランジスタ（５）、不完全燃焼
検知素子たるＣＯセンサ（６）を介して接続すると共に
該作動ソレノイド（１ａ）の他端と該乾電池（４）のマ
イナス極とを、第２制御スイツヂたるリードスイッチ（
０を介して接続して該安全弁（１）の駆動回路（８）を
構成し、さらに、該リードスイッチ（７）を閉成する励
磁コイル（９）を該バーナ（２）で加熱されて起電力を
発生する熱電素子たる熱電対ａＧに接続した。In Fig. 1, (1) is an electromagnetic safety valve installed in a gas supply path (3) that is a fuel supply path to the burner, (4) is a dry battery that is a DC power source, and the operating solenoid of the safety valve (1) is (1a) and the positive electrode of the dry battery (4),
A transistor (5) serving as a first control switch is connected via a CO sensor (6) serving as an incomplete combustion detection element, and the other end of the operating solenoid (1a) and the negative pole of the dry cell (4) are connected to a second Control switch reed switch (
0 to form a drive circuit (8) for the safety valve (1), and furthermore, an excitation coil (9) that closes the reed switch (7) is heated and energized by the burner (2). It was connected to a thermocouple aG, which is a thermoelectric element that generates electric power.
図中（１１） （１２１（１３は電流調整用の抵抗を示
す。In the figure (11) (121 (13 indicates a resistor for current adjustment).
（作 用）
次いでその作動を説明するに、バーナ（２）が正常燃焼
され且つＣＯ，＋１度が正常な値にあるときは、熱電対
（＋１）は該バーナ（２）により加熱されて所定起
１電力を発生し、この１個の熱電対ａｏにより
励磁コイル（９）が通電されリードスイッチ（Ｄが閉成
される。このとき、ＣＯセンサ（６）は高抵抗値に保持
されているからトランジスタ（５）がオンし、乾電池（
４）により作動ソレノイド（１ａ）が通電されて電磁安
全弁（１）が開弁保持され、該バーナ（２）の燃焼は継
続される。(Function) Next, to explain its operation, when the burner (2) is normally combusted and CO, +1 degree is at the normal value, the thermocouple (+1) is heated by the burner (2) and reaches a predetermined temperature. Wake up
1 electric power is generated, the excitation coil (9) is energized by this one thermocouple ao, and the reed switch (D) is closed.At this time, the CO sensor (6) is held at a high resistance value. The transistor (5) turns on and the battery (
4) energizes the operating solenoid (1a), keeps the electromagnetic safety valve (1) open, and continues combustion in the burner (2).
また、バーナ（乃の燃焼中にｃｏｄ度が異常な値になっ
たときは、熱電対ＯＧは加熱されているから上記場合と
同様にリードスイッチ（７）は開成されるが、ＣＯセン
サ（６）が低抵抗値に変化するからトランジスタ（５）
はオフし、作動ソレノイド（１ａ）への通電が断たれて
電磁安全弁（１）は閉弁し、該バーナ（ｈの燃焼は停止
されて安全である。Also, when the COD degree reaches an abnormal value during combustion of the burner, the thermocouple OG is heated, so the reed switch (7) is opened as in the above case, but the CO sensor (6) is opened. ) changes to a low resistance value, so the transistor (5)
is turned off, the power to the operating solenoid (1a) is cut off, the electromagnetic safety valve (1) is closed, and the combustion of the burner (h) is stopped and it is safe.
さらに、バーナ（りの燃焼停止状態又は失火状態におい
て熱電対（ｌｅは加熱されず、リードスイッチ（７）は
閉成されないから、乾電池（４）による作動ソレノイド
（１ａ）への通電が断たれて電磁安全弁（１）は閉弁状
態となり、炎監視装置（励磁コイル（９）と熱電対ＯＧ
とで構成される回路をいう。）の７エイルセフテイー性
が確保される。Furthermore, when the burner stops combustion or misfires, the thermocouple (le) is not heated and the reed switch (7) is not closed. The electromagnetic safety valve (1) is closed, and the flame monitoring device (excitation coil (9) and thermocouple OG
A circuit consisting of ) is ensured.
したがって、このときガス洩れを生じることはなく、し
かも乾電池（４）が消耗することもない。Therefore, no gas leakage occurs at this time, and the dry battery (4) does not become exhausted.
第２図及び第３は第１図の基本回路にさらに安全対策を
付加した回路の実施例を示すもので、第１制御スイッチ
たるトランジスタ（５）を直列接続した２個で構成して
、バーナ（乃の燃焼中にＣＯ濃度が異常な値になった場
合、両トランジスタ（５） （５）のうち一方が短絡故
障していても他方がこの異常を検知してオフになり、電
源たる乾電池（４）による作動ソレノイド（１ａ）への
通電を断ち、電磁安全弁（１）が閉弁されるようにする
と共に、コンデンサ等から成る誤動作防止回路０Φを組
込んでガス燃焼器の点・消火時におけるＣＯのパルス的
異常発生により回路が誤作動しないようにした。Figures 2 and 3 show an embodiment of a circuit in which safety measures have been added to the basic circuit in Figure 1, and the burner is constructed of two transistors (5) connected in series as the first control switch. (If the CO concentration reaches an abnormal value during combustion, even if one of the transistors (5) has a short-circuit failure, the other one will detect this abnormality and turn off, and the dry cell battery that is the power source will (4) to cut off the power to the solenoid (1a) so that the electromagnetic safety valve (1) is closed, and also incorporate a malfunction prevention circuit 0Φ consisting of a capacitor etc. when the gas combustor is turned on or extinguished. This prevents the circuit from malfunctioning due to CO pulse abnormality.
この場合、第１図示のリードスイッチ（７）とこれの励
磁コイル（９）の代りに一般の常開接点（１５ａ ）と
コイル（ＩＳｂ）とから成るリレーを用いた。In this case, a general relay consisting of a normally open contact (15a) and a coil (ISb) was used in place of the reed switch (7) and its excitation coil (9) shown in the first figure.
尚、第１図乃至第３図示のものでは、ＣＯセンサ（６）
のヒータ（６ａ）等が断線故障したとき、トランジスタ
（５）はオンせず、電磁安全弁（１）は開弁されるので
安全である。In addition, in the ones shown in FIGS. 1 to 3, the CO sensor (6)
When the heater (6a) or the like has a disconnection failure, the transistor (5) is not turned on and the electromagnetic safety valve (1) is opened, so it is safe.
また、直流電源として乾電池（４）を用いたが、これに
限ることなく、例えば整流電源等、１個で２Ｖ程度の起
電力を有する小型の直ｉ電源であれば良い。Further, although a dry battery (4) is used as a DC power source, the present invention is not limited to this, and any small direct current power source having an electromotive force of about 2V may be used, such as a rectifier power source.
さらに、燃焼器としてガス湯沸器を用いる場合には、回
路に第２図の点線水のように出湯時に閉成するスイッチ
を介入させることもできる。Furthermore, when a gas water heater is used as the combustor, a switch that closes when hot water is dispensed can be inserted into the circuit, as shown by the dotted line in FIG.
（発明の効果）
このように本発明によるときは、バーナへの燃料供給路
に介設する電磁安全弁の駆動回路の電源として熱発電素
子を除く乾電池その他の直流電源を用い、該駆動回路に
該バーナに臨ませた熱電素子の（熱発電素子を含む）の
出力変化により開閉する第２制御スイッチを介設したの
で、小型の直？ｉｌ！電源で該安全弁を駆動することが
でき、したがって安全装置全体を小型化することができ
、ガス湯沸器等の小型の燃焼器にも余裕をもって組込む
ことができる。(Effects of the Invention) As described above, according to the present invention, a dry cell or other DC power source other than a thermoelectric generator is used as a power source for a drive circuit of an electromagnetic safety valve interposed in a fuel supply path to a burner, and We installed a second control switch that opens and closes according to changes in the output of the thermoelectric element facing the burner (including the thermoelectric element), so it is possible to use a small direct switch. Il! The safety valve can be driven by a power source, so the entire safety device can be downsized and can be easily incorporated into a small combustor such as a gas water heater.
また、バーナの燃焼停止状態又は失火状態においては、
第２制御スイッチにより電磁安全弁の駆動回路が開路さ
れるから、直流電源の電力が消費されることがなく、し
かもガス洩れを生しることもない。In addition, when the burner is in a combustion stop state or a misfire state,
Since the drive circuit of the electromagnetic safety valve is opened by the second control switch, the electric power of the DC power supply is not consumed and gas leakage does not occur.
第１図は本発明の１例を示す説明線図、第２図は本発明
装置の他の実施例を示す説明線図、第３図ぼ本発明装置
のさらに他の実施例を示す説明線図、第４図は従来装置
の説明線図である。
（１）・・・１１ｍ安全弁
（１ａ）・・・作動ソレノイド
（２）・・・バーナ
（３）・・・ガス供給路（燃料供給路）（４）・・・乾
電池（直流電源）
（５）・・・トランジスタ（第１制御スイッチ）（６）
・・・ＣＯセンサ（不完全燃焼検知素子）（７）・・・
リードスイッチ（第２制御スイッチ）（８）・・・駆動
回路 ）（９）・・・
常開接点（第２制御スイッチ）第１図
第４図
第３図FIG. 1 is an explanatory diagram showing one example of the present invention, FIG. 2 is an explanatory diagram showing another embodiment of the device of the present invention, and FIG. 3 is an explanatory diagram showing still another embodiment of the device of the present invention. 4 are explanatory diagrams of the conventional device. (1)...11m safety valve (1a)...Operating solenoid (2)...Burner (3)...Gas supply path (fuel supply path) (4)...Dry battery (DC power supply) (5 )...Transistor (first control switch) (6)
...CO sensor (incomplete combustion detection element) (7)...
Reed switch (second control switch) (8)...drive circuit) (9)...
Normally open contact (second control switch) Fig. 1 Fig. 4 Fig. 3
Claims (1)
ノイドを電源に接続して該電磁安全弁の駆動回路を構成
し、該駆動回路に、ＣＯセンサその他の不完全燃焼検知
素子の出力変化により開閉する第１制御スイッチを介設
するものにおいて、該電源を乾電池その他の直流電源で
構成し、該駆動回路に該バーナに臨ませた熱電素子の出
力変化により開閉する第２制御スイッチを介設したこと
を特徴とする燃焼器の安全装置。A drive circuit for the electromagnetic safety valve is constructed by connecting the operating solenoid of the electromagnetic safety valve interposed in the fuel supply path to the burner to a power source, and the drive circuit is configured to open and close according to changes in the output of a CO sensor or other incomplete combustion detection element. In a device in which a first control switch is interposed, the power source is composed of a dry cell or other DC power source, and a second control switch is interposed in the drive circuit, which opens and closes according to changes in the output of a thermoelectric element facing the burner. A combustor safety device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60100038A JPS61259023A (en) | 1985-05-11 | 1985-05-11 | Safety device for combustion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60100038A JPS61259023A (en) | 1985-05-11 | 1985-05-11 | Safety device for combustion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61259023A true JPS61259023A (en) | 1986-11-17 |
Family
ID=14263354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60100038A Pending JPS61259023A (en) | 1985-05-11 | 1985-05-11 | Safety device for combustion unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61259023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06337115A (en) * | 1993-05-28 | 1994-12-06 | Rinnai Corp | Combustion device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54140234A (en) * | 1978-04-24 | 1979-10-31 | Toshiba Corp | Combustion safety device control method |
-
1985
- 1985-05-11 JP JP60100038A patent/JPS61259023A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54140234A (en) * | 1978-04-24 | 1979-10-31 | Toshiba Corp | Combustion safety device control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06337115A (en) * | 1993-05-28 | 1994-12-06 | Rinnai Corp | Combustion device |
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