JPS6237291B2 - - Google Patents
Info
- Publication number
- JPS6237291B2 JPS6237291B2 JP58202799A JP20279983A JPS6237291B2 JP S6237291 B2 JPS6237291 B2 JP S6237291B2 JP 58202799 A JP58202799 A JP 58202799A JP 20279983 A JP20279983 A JP 20279983A JP S6237291 B2 JPS6237291 B2 JP S6237291B2
- Authority
- JP
- Japan
- Prior art keywords
- current value
- coil
- burner
- proportional valve
- switching circuit
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001294 propane 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
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water 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
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/16—Fuel valves variable flow or proportional valves
Description
【発明の詳細な説明】
本発明は電磁式比例弁を備えた湯沸器等燃焼器
の能力を切換可能にした燃焼制御回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion control circuit that can switch the capacity of a combustor, such as a water heater, equipped with an electromagnetic proportional valve.
従来の燃焼制御回路として、燃料供給路に介設
した電磁式比例弁のコイルに流れる電流を、基板
に組込まれた制御回路により、負荷の変化に応じ
て変化させて、該比例弁の開度を変化させ、バー
ナの燃焼量を制御するようにしたものが知られる
が、能力の異なる燃焼器では、それに応じた最大
定格燃焼量を持つ専用のバーナを用いる一般とし
たもので、該制御回路も該バーナに対応する専用
の回路が用いられ、量産性が悪い。 In a conventional combustion control circuit, a control circuit built into the board changes the current flowing through the coil of an electromagnetic proportional valve installed in the fuel supply path according to changes in the load, thereby controlling the opening of the proportional valve. It is known that the combustion amount of the burner is controlled by changing the amount of combustion, but for combustors with different capacities, a dedicated burner with a maximum rated combustion amount is generally used, and the control circuit Also, a dedicated circuit corresponding to the burner is used, making it difficult to mass-produce.
本発明は量産性に優れた燃焼制御回路を提供す
ることをその目的とするもので、燃料供給路に介
設した電磁式比例弁のコイルに流れる電流を、負
荷の変化に応じて変化させて、該比例弁の開度を
変化させ、バーナの燃焼量を制御するようにした
ものにおいて、該コイルの上限電流値を制御する
能力切換回路を設け、該能力切換回路により該バ
ーナの最大定格燃焼量を供給する電流値以下の範
囲で該上限電流値を高低複数段に切換自在とした
ことを特徴とする。 The purpose of the present invention is to provide a combustion control circuit with excellent mass productivity, in which the current flowing through the coil of an electromagnetic proportional valve installed in the fuel supply path is changed in accordance with changes in load. , in which the combustion amount of the burner is controlled by changing the opening degree of the proportional valve, a capacity switching circuit is provided to control the upper limit current value of the coil, and the capacity switching circuit controls the maximum rated combustion of the burner. The present invention is characterized in that the upper limit current value can be freely switched between high and low levels within a range below the current value that supplies the current amount.
以下に本発明の実施例を図面に基づいて説明す
る。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明をガス湯沸器に適用する場合の
実施例を示すもので、図中１はバーナを、２は該
バーナ１へのガス供給路すなわち燃料供給路３に
介設した電磁式比例弁を、４は熱交換器を、５は
該熱交換器４の下流側の給湯管内に臨ませたサー
ミスタから成る感温素子を、６は該比例弁２のコ
イルに流れる電流を制御する本発明の制御回路を
夫々示す。 FIG. 1 shows an embodiment in which the present invention is applied to a gas water heater. 4 is a heat exchanger, 5 is a temperature sensing element consisting of a thermistor facing into the hot water supply pipe on the downstream side of the heat exchanger 4, and 6 controls the current flowing through the coil of the proportional valve 2. The control circuits of the present invention are shown respectively.
次に該制御回路６の具体的構成を第２図に基づ
いて説明する。 Next, the specific configuration of the control circuit 6 will be explained based on FIG. 2.
図示のものは、負荷の大きさを出場温度と設定
温度との偏差としてとらえた場合の実施例を示す
もので、出湯温度検出用の感温素子５と温度調節
つまみ（図示せず）に連動する出湯温度設定用の
可変抵抗器７とを組込んだブリツジ回路８によ
り、出湯温度と設定温度との偏差を、接続点Ａと
接続点Ｂとの電位差の形で検出し、その電位差す
なわち電圧を演算増幅器９により演算増幅し、さ
らにそれを分圧回路１０によりレベル調整して、
トランジスタ１１のベースに入力させ、出湯温度
と設定温度との差に応じた電流を該トランジスタ
１１のコレクタ側に発生させる構成とした。この
コレクタ側に流れる電流を前記バーナ１への燃料
供給路３に介在させた前記電磁式比例弁２のコイ
ル２ａに流して該比例弁２の開度を変化させ、第
３図示のように該バーナ１の燃焼量を最大定格燃
焼量ＱMまで比例的に制御されるようにした。 The illustrated example shows an example in which the magnitude of the load is taken as the deviation between the outlet temperature and the set temperature, and is linked to the temperature sensing element 5 for detecting the hot water temperature and the temperature control knob (not shown). A bridge circuit 8 incorporating a variable resistor 7 for setting the tapping temperature detects the deviation between the tapping temperature and the set temperature in the form of a potential difference between connection point A and connection point B, and detects the difference in potential, that is, the voltage. is operationally amplified by an operational amplifier 9, and further level-adjusted by a voltage dividing circuit 10.
The current is input to the base of the transistor 11, and a current corresponding to the difference between the tapped water temperature and the set temperature is generated on the collector side of the transistor 11. This current flowing to the collector side is passed through the coil 2a of the electromagnetic proportional valve 2 interposed in the fuel supply path 3 to the burner 1 to change the opening degree of the proportional valve 2. The combustion amount of burner 1 is controlled proportionally up to the maximum rated combustion amount Q M.
尚、第２図中１２は該コイル２ａに流れる電流
を外乱に対して補償する演算増幅器を示す。 Note that 12 in FIG. 2 represents an operational amplifier that compensates the current flowing through the coil 2a against disturbances.
以上の構成は前記従来回路の構成と特に異なる
ところはないが、本発明は燃料供給路３に介設し
た電磁式比例弁２のコイル２ａの上限電流値を制
御する能力切換回路１３を設け、該能力切換回路
１３によりバーナ１の最大定格燃焼量を供給する
電流値ＩM以下の範囲で該上限電流値を高低複数
段に切換自在とした。 Although the above configuration is not particularly different from the configuration of the conventional circuit, the present invention includes a capacity switching circuit 13 that controls the upper limit current value of the coil 2a of the electromagnetic proportional valve 2 interposed in the fuel supply path 3, By means of the capacity switching circuit 13, the upper limit current value can be switched between high and low levels within a range below the current value I M that supplies the maximum rated combustion amount of the burner 1.
図示のものを詳述すれば、前記分圧回路１０の
分圧点Ｃの接地側に能力切換回路１３を組込むも
ので、この能力切換回路１３は３個の互いに直列
の抵抗１４，１５，１６と、そのうちの２個に各
並列のスイツチ１７，１８とから成り、この能力
切換回路１３を切換えることにより分圧点Ｃの電
位が高低３段階に切換自在となるようにした。 To explain in detail what is shown in the figure, a capability switching circuit 13 is incorporated on the ground side of the voltage dividing point C of the voltage dividing circuit 10, and this capability switching circuit 13 consists of three resistors 14, 15, 16 connected in series with each other. , two of which are connected in parallel with each other, and switches 17 and 18, and by switching this capacity switching circuit 13, the potential at the voltage dividing point C can be freely switched between three high and low levels.
これを更に具体的に説明すると、両スイツチ１
７，１８を閉成すれば、抵抗１４と抵抗１５とが
短絡されて、分圧点Ｃの電位を最も低くすること
ができ、スイツチ１７のみを閉成すれば、抵抗１
４が短絡されて、分圧点Ｃの電位を両スイツチ１
７，１８を閉成したときよりも高くすることがで
き、両スイツチ１７，１８を開成すれば、分圧点
Ｃの電位を最も高くすることができる。 To explain this more specifically, both switches 1
If switch 7 and 18 are closed, resistor 14 and resistor 15 are short-circuited, and the potential at voltage dividing point C can be made the lowest.If only switch 17 is closed, resistor 1
4 is short-circuited, and the potential of voltage dividing point C is changed to both switches 1
7 and 18 are closed, and by opening both switches 17 and 18, the potential at the voltage dividing point C can be made highest.
このように、分圧点Ｃの電位を高低３段階に切
換えることにより、トランジスタ１１の最大ベー
ス電位を３段階に変化させることができ、結局、
電磁式比例弁２のコイル２ａの上限電流値を、バ
ーナ１の最大定格燃焼量ＱMを供給する電流値以
下の範囲で高低３段階例えば第３図のようにI1，
I2，ＩMの３段階に切換えることができる。 In this way, by switching the potential at the voltage dividing point C into three high and low levels, the maximum base potential of the transistor 11 can be changed into three levels, and as a result,
The upper limit current value of the coil 2a of the electromagnetic proportional valve 2 is set in three high and low levels within the range of the current value that supplies the maximum rated combustion amount Q M of the burner 1, for example, I 1 , as shown in FIG.
It can be switched to three stages: I 2 and I M.
尚、第２図示のものでは、前記分圧回路１０の
分圧点Ｃの非接地側にガス種に対応した調整回路
１９を組込むもので、この調整回路１９は３個の
互いに並列の抵抗２０，２１，２２と、これら抵
抗２０，２１，２２を選択する１個の切換スイツ
チ２３とから成り、各抵抗２０，２１，２２を都
市ガス用、天然ガス用、プロパンガス用として、
切換スイツチ２３を切換えることにより、分圧点
Ｃの電位がガス種に応じた値になるようにした。 In the case shown in the second figure, an adjustment circuit 19 corresponding to the type of gas is incorporated on the non-grounded side of the voltage division point C of the voltage division circuit 10, and this adjustment circuit 19 has three resistors 20 connected in parallel with each other. , 21, 22, and one selector switch 23 for selecting these resistors 20, 21, 22, each resistor 20, 21, 22 is set for city gas, natural gas, propane gas,
By switching the changeover switch 23, the potential at the partial pressure point C was set to a value corresponding to the type of gas.
次いでその作動を説明するに、本発明によれ
ば、例えば16号のガス湯沸器を、バーナ１及び制
御回路６を変えずに能力切換回路１３の切換操作
だけで15号のガス湯沸器にも、13号のガス湯沸器
にも変更し得るもので、これを詳述すれば、13号
のガス湯沸器として使用したい場合には、能力切
換回路１３の両スイツチ１７，１８を閉成して、
電磁式比例弁２のコイル２ａの上限電流値を、16
号のガス湯沸器のバーナ１の最大定格燃焼量ＱM
を供給するコイル電流値ＩMよりかなり低い値例
えば第３図示のI1に規制すれば良い。 Next, to explain its operation, according to the present invention, for example, a No. 16 gas water heater can be changed to a No. 15 gas water heater by simply switching the capacity switching circuit 13 without changing the burner 1 or the control circuit 6. In detail, if you want to use it as a No. 13 gas water heater, both switches 17 and 18 of the capacity switching circuit 13 should be turned on. Close and
The upper limit current value of the coil 2a of the electromagnetic proportional valve 2 is 16
Maximum rated combustion amount Q M of burner 1 of the gas water heater No.
It is sufficient to restrict the coil current to a value considerably lower than the coil current value I M that supplies the current, for example, I 1 shown in FIG.
これによれば、電磁式比例弁２の最大開度を16
号のガス湯沸器の場合の最大定格開度より小さく
することができ、バーナ１の最大燃焼量を最大定
格燃焼量ＱMより小さいQ1にすることができて、
能力が16号のガス湯沸器を13号に変更して使用す
ることができる。 According to this, the maximum opening degree of the electromagnetic proportional valve 2 is set to 16
The maximum rated opening of burner 1 can be made smaller than the maximum rated opening for the No. 2 gas water heater, and the maximum combustion amount of burner 1 can be set to Q 1 , which is smaller than the maximum rated combustion amount Q M.
A gas water heater with a capacity of 16 can be changed to a capacity of 13.
また、16号のガス湯沸器として使用したい場合
には、能力切換回路１３の両スイツチ１７，１８
を開成して、電磁式比例弁２のコイル２ａの上限
電流値を第３図示のＩMになるようにすれば良
い。 In addition, if you want to use it as a No. 16 gas water heater, both switches 17 and 18 of the capacity switching circuit 13
The upper limit current value of the coil 2a of the electromagnetic proportional valve 2 may be set to I M shown in the third diagram.
このように本発明によるときは、燃料供給路に
介設した電磁式比例弁のコイルの上限電流値を、
能力切換回路により、バーナの最大定格燃焼量を
供給する電流値以下の範囲で高低複数段に切換自
在としたので、能力の異なる燃焼器にも、該能力
切換回路により該コイルの上限電流値を切換える
だけで適用でき、能力に応じた専用のバーナと該
バーナに対応する専用のコイル電流の制御回路と
を各用意せねばならない前記従来回路に比して量
産性に優れる効果を有する。 In this way, according to the present invention, the upper limit current value of the coil of the electromagnetic proportional valve installed in the fuel supply path is
The capacity switching circuit allows switching between high and low current levels in the range below the current value that supplies the maximum rated combustion amount of the burner, so even for combustors with different capacities, the capacity switching circuit allows the upper limit current value of the coil to be changed. It can be applied simply by switching, and has the advantage of being superior in mass production compared to the conventional circuit, which requires a dedicated burner according to its capacity and a dedicated coil current control circuit corresponding to the burner.
第１図は本発明を適用するガス器具の１例を示
す説明線図、第２図は本発明の１例を示す回路
図、第３図はコイル電流値と燃焼量との関係図で
ある。
２…電磁式比例弁、２ａ…コイル、３…燃料供
給路、１３…能力切換回路。
Fig. 1 is an explanatory diagram showing an example of a gas appliance to which the present invention is applied, Fig. 2 is a circuit diagram showing an example of the present invention, and Fig. 3 is a diagram showing the relationship between coil current value and combustion amount. . 2... Solenoid proportional valve, 2a... Coil, 3... Fuel supply path, 13... Capacity switching circuit.
Claims (1)
に流れる電流を、負荷の変化に応じて変化させ
て、該比例弁の開度を変化させ、バーナの燃焼量
を制御するようにしたものにおいて、該コイルの
上限電流値を制御する能力切換回路を設け、該能
力切換回路により該バーナの最大定格燃焼量を供
給する電流値以下の範囲で該上限電流値を高低複
数段に切換自在としたことを特徴とする燃焼制御
回路。1 The current flowing through the coil of an electromagnetic proportional valve installed in the fuel supply path is changed in accordance with changes in the load to change the opening degree of the proportional valve, thereby controlling the combustion amount of the burner. A capacity switching circuit is provided to control the upper limit current value of the coil, and the capacity switching circuit allows the upper limit current value to be switched in multiple stages of high and low levels within a range below the current value that supplies the maximum rated combustion amount of the burner. A combustion control circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202799A JPS6096827A (en) | 1983-10-31 | 1983-10-31 | Combustion control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202799A JPS6096827A (en) | 1983-10-31 | 1983-10-31 | Combustion control circuit |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63130249A Division JPH01111126A (en) | 1988-05-30 | 1988-05-30 | Combustion control circuit |
| JP63140593A Division JPS63315825A (en) | 1988-06-09 | 1988-06-09 | Combustion control device |
| JP8322889A Division JPH02176317A (en) | 1989-03-31 | 1989-03-31 | Combustion control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6096827A JPS6096827A (en) | 1985-05-30 |
| JPS6237291B2 true JPS6237291B2 (en) | 1987-08-12 |
Family
ID=16463381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58202799A Granted JPS6096827A (en) | 1983-10-31 | 1983-10-31 | Combustion control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6096827A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6309332B2 (en) * | 2014-04-18 | 2018-04-11 | リンナイ株式会社 | Resistance detection signal generation circuit for variable resistors |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376436A (en) * | 1976-12-18 | 1978-07-06 | Matsushita Electric Ind Co Ltd | Thermal control circuit |
| JPS5538484A (en) * | 1978-09-13 | 1980-03-17 | Noritsu Co Ltd | Temperature controller for instantaneous boiler |
| JPS56145410A (en) * | 1980-04-11 | 1981-11-12 | Youei Seisakusho:Kk | Proportional control system for gas |
| JPS58678A (en) * | 1981-06-23 | 1983-01-05 | Matsushita Electric Ind Co Ltd | Solenoid proportional valve driving circuit |
| JPS5823534A (en) * | 1981-07-31 | 1983-02-12 | Kobe Steel Ltd | Production of composite metallic slab |
-
1983
- 1983-10-31 JP JP58202799A patent/JPS6096827A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376436A (en) * | 1976-12-18 | 1978-07-06 | Matsushita Electric Ind Co Ltd | Thermal control circuit |
| JPS5538484A (en) * | 1978-09-13 | 1980-03-17 | Noritsu Co Ltd | Temperature controller for instantaneous boiler |
| JPS56145410A (en) * | 1980-04-11 | 1981-11-12 | Youei Seisakusho:Kk | Proportional control system for gas |
| JPS58678A (en) * | 1981-06-23 | 1983-01-05 | Matsushita Electric Ind Co Ltd | Solenoid proportional valve driving circuit |
| JPS5823534A (en) * | 1981-07-31 | 1983-02-12 | Kobe Steel Ltd | Production of composite metallic slab |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6096827A (en) | 1985-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |