JPS5843327A - gas combustion control device - Google Patents
gas combustion control deviceInfo
- Publication number
- JPS5843327A JPS5843327A JP56140198A JP14019881A JPS5843327A JP S5843327 A JPS5843327 A JP S5843327A JP 56140198 A JP56140198 A JP 56140198A JP 14019881 A JP14019881 A JP 14019881A JP S5843327 A JPS5843327 A JP S5843327A
- Authority
- JP
- Japan
- Prior art keywords
- control device
- valve
- pressure
- solenoid valve
- proportional control
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/04—Memory
-
- 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
-
- 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
-
- 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
- F23N2235/20—Membrane valves
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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、比例制御弁を内蔵したガス燃焼装置において
、比例制御弁が異常状態になったときの検出手段に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a means for detecting when a proportional control valve enters an abnormal state in a gas combustion apparatus incorporating a proportional control valve.
従来比例制御弁を利用したガス燃焼装置においては、比
例制御弁摺動部の摩擦抵抗の増大、弁とり、燃焼生ガス
が外部に漏洩したりするという心配があった。Conventionally, in gas combustion apparatuses using proportional control valves, there have been concerns about increased frictional resistance of the proportional control valve's sliding parts, valve opening, and leakage of raw combustion gas to the outside.
本発明は比例制御弁の正常な電流と制御圧力の関係を電
子制御装置に記憶させ、これと圧力センサで検知した実
動時の比例制御弁特性を比較し、正常な】流−制御圧力
特性許容範囲から、はずれる場合には元電磁弁を閉じる
ことで異常の早期検出をはかり上記従来の欠点を解消す
るものである。The present invention stores the normal relationship between the current and control pressure of the proportional control valve in an electronic control device, and compares this with the proportional control valve characteristics during actual operation detected by a pressure sensor. If it deviates from the permissible range, the main solenoid valve is closed to detect the abnormality at an early stage, thereby solving the above-mentioned drawbacks of the conventional method.
以下本発明の一実施例について第１図から第３図にもと
づいて説明する。An embodiment of the present invention will be described below based on FIGS. 1 to 3.
第１図は、制御システム概要図であり、ガス供給糸路上
流側１から元電磁弁２．比例制御弁３゜圧力センサ４．
ガスバーナ６が配置されている、６は電子制御装置本体
であり、この内部に正常作動記憶部７．比較部８９元電
磁弁制御部９が、破線で示した電気信号系統１ｏで連結
されている。FIG. 1 is a schematic diagram of the control system, from the upstream side 1 on the gas supply line to the source solenoid valve 2. Proportional control valve 3゜Pressure sensor 4.
The gas burner 6 is disposed, and 6 is an electronic control device main body, inside which is a normal operation memory section 7. The comparison unit 89 and the solenoid valve control unit 9 are connected to each other by an electrical signal system 1o indicated by a broken line.
また１１は比例制御弁３の駆動部である。Further, 11 is a drive section for the proportional control valve 3.
第２図は比例制御弁概要図であり、電磁コイル１２にプ
ランジャーガイド１３を嵌入させ、このプランジャーガ
イド１３内に弁１４、連結棒１５１−イヤフラム１６が
互に連結された電磁プランジャ１７が遊挿されている。FIG. 2 is a schematic diagram of a proportional control valve, in which a plunger guide 13 is fitted into an electromagnetic coil 12, and within this plunger guide 13, a valve 14 and an electromagnetic plunger 17 with a connecting rod 151 and an earphragm 16 connected to each other are installed. It is loosely inserted.
そして、１８は弁座、１９はガス入口、２０はガス出口
を示している。18 is a valve seat, 19 is a gas inlet, and 20 is a gas outlet.
比例制御弁の電流−制御圧力特性
図である。横軸は比例制御弁に印加される電流、縦軸は
制御圧力を示して（・る。It is a current-control pressure characteristic diagram of a proportional control valve. The horizontal axis shows the current applied to the proportional control valve, and the vertical axis shows the control pressure.
一点鎖線で示したｈ ４性曲線は比例制御弁が正常に作
動した許容における標準の電流−制御圧力特性、実線で
示したＢ及びＣの特性曲線は比例制御弁の全動作電流中
に対して、ガス燃焼装置と動を考慮して決めたー許容下
限の電流−制御圧力特性、及び許容上限の電流−制御圧
力特性である。The h4 characteristic curve shown by the dashed line is the standard current-control pressure characteristic when the proportional control valve operates normally, and the characteristic curves B and C shown by the solid line are for the full operating current of the proportional control valve. , the allowable lower limit current-control pressure characteristics, and the allowable upper limit current-control pressure characteristics, which were determined in consideration of the gas combustion equipment and its dynamics.
上記構成において、元電磁弁２を通って比例制御弁３の
ガス入口１９に流入する燃料ガスの圧力は、電磁コイル
１２に印加する電流値を変えるこ−とによりすなわち弁
１４と弁座１８の間隙を変えることＫより所定の圧力に
制御される。そして、この制御された燃欝ガスは、ガス
出口２ｏを出て、圧力に対応した燃焼流量でガスバーナ
６で燃焼するものである。第２図から明らかのように、
比例制御弁の電流−制御圧力特性が常に安定している為
には、比例制御弁の可動部分である。電磁プランジャ１
７や、連結棒１６が支持摺動部（図示せず）との摩擦力
が一定であること、また、弁１４と弁座１８が固着をお
こさないこと、さらに、ター♂あ破損等がｈいことが必
須条件で
・ ′）
ある。ところが、比例制御弁を構成している各部
“品材箪のバラツキ、経年変化、あるいは空気中に
微量に存在するオゾンのダイヤフラム１６への悪影響等
がある為に上記必須条件が満たされなくなる可能性があ
る。このようになると、比例制御弁の電流−制御圧力特
性が初期値から大きくづれてしまうことになる〇
したがって、第１図の制御システム概要図に示すように
、ガスバーナ６の燃焼流量−め大・きさのいかんにかか
わらず、常に比例制御弁３のガス出口２ｏ圧力すなわち
制御圧力を、圧力センサ４で検出しこの実作動時の圧力
を電子制御装置ｅ内の比較部８に入力し、正常作動配憶
部７に記憶しである。In the above configuration, the pressure of the fuel gas flowing into the gas inlet 19 of the proportional control valve 3 through the solenoid valve 2 can be controlled by changing the current value applied to the solenoid coil 12, that is, by changing the value of the current applied to the solenoid coil 12. By changing the gap K, the pressure is controlled to a predetermined value. Then, this controlled combustion gas exits the gas outlet 2o and is combusted in the gas burner 6 at a combustion flow rate corresponding to the pressure. As is clear from Figure 2,
In order for the current-control pressure characteristics of the proportional control valve to be always stable, it is the movable part of the proportional control valve. Electromagnetic plunger 1
7, the friction force between the connecting rod 16 and the supporting sliding part (not shown) is constant, the valve 14 and the valve seat 18 are not stuck together, and the tar ♂ is not damaged. It is an essential condition that However, the various parts that make up the proportional control valve
“The above essential conditions may not be met due to variations in the inventory, aging, or the negative effect of small amounts of ozone in the air on the diaphragm 16. In this case, the proportional control valve The current-control pressure characteristics of the gas burner 6 will deviate greatly from the initial value. Therefore, as shown in the control system overview diagram in Figure 1, the combustion flow rate of the gas burner 6 - regardless of its size The pressure at the gas outlet 2o of the proportional control valve 3, that is, the control pressure, is detected by the pressure sensor 4, and this pressure at the time of actual operation is inputted to the comparison section 8 in the electronic control device e, and stored in the normal operation storage section 7. be.
第３図に示すＢ及びＣの特性曲線で囲まねた領域内に入
っているかどうか比較判定し、もし、との領域内に入っ
ていないときには異常状態と判定するものである。例え
ば第３図に示した電流１１のとき圧力センサ４で検出し
た実作動時の圧力が、Ｐ！なる圧力であった場合、同様
に電流１２のとき、Ｐ！なる圧力であった場合、異常状
態と判定するものである。そして、この場合には即座に
、異常状態を示す電気信号が、元電磁弁制御部９に流れ
、元電磁弁２を閉じてしまうものである。It compares and determines whether it falls within the area surrounded by the characteristic curves B and C shown in FIG. 3, and if it does not fall within the area, it is determined that it is in an abnormal state. For example, when the current is 11 shown in FIG. 3, the pressure detected by the pressure sensor 4 during actual operation is P! Similarly, when the current is 12, P! If the pressure is, it is determined that the condition is abnormal. In this case, an electric signal indicating the abnormal state immediately flows to the original solenoid valve control section 9, thereby closing the original solenoid valve 2.
以上の説明から明らかのように、本発明のガス燃焼制御
装置は比例制御弁の制御圧力を常時圧力センサで検出し
、この検出値と、電子制御装置内の比例制御弁正常作動
記憶部の値とを比較し、異なる場合には、即座に元電磁
弁を閉じることになり、したがって、比例制御弁の異常
または、ガス燃焼装置の異常の場合には、燃粁ガスが自
動的に遮断されるので、きわめて安全性の高いガス燃焼
装置の提供を可能にするものである。As is clear from the above explanation, the gas combustion control device of the present invention constantly detects the control pressure of the proportional control valve with a pressure sensor, and uses this detected value and the value in the proportional control valve normal operation memory section in the electronic control device. If they are different, the original solenoid valve will be immediately closed, and therefore, in the case of an abnormality in the proportional control valve or an abnormality in the gas combustion device, the combustion gas will be automatically shut off. Therefore, it is possible to provide an extremely safe gas combustion device.
第１図は本発明のガス燃焼制御装置の一実施例を示す制
御システム概要図、第２図は土間制御システムを構成し
ている比例制御弁の概念図、第３図は上記比例制御弁の
電流−制御圧力特性図である。
１・・・・・・ガス供給系路、２・・・・・・元電磁弁
、３・・・・・・比例制御弁、４・・・・・・圧力セン
サ、５・・・・・・ガスバーナー、６・・・・・・電子
制御装置、７・・・・・・正常作動記憶、部、８・・・
・・・比較部、９・・・・・・元電磁弁制御部。
第１図
＠２図
＠３図Fig. 1 is a control system outline diagram showing one embodiment of the gas combustion control device of the present invention, Fig. 2 is a conceptual diagram of the proportional control valve that constitutes the dirt floor control system, and Fig. 3 is a diagram of the proportional control valve described above. It is a current-control pressure characteristic diagram. 1... Gas supply system line, 2... Original solenoid valve, 3... Proportional control valve, 4... Pressure sensor, 5...・Gas burner, 6...Electronic control unit, 7...Normal operation memory, part, 8...
... Comparison section, 9... Original solenoid valve control section. Figure 1 @ Figure 2 @ Figure 3
Claims (2)
、元電磁弁、比例制御弁、圧力センサを配置すると共に
、これらを制御する電子制御装置を設け、この電子制御
装置内に前記比例制御弁が正常に作動した場合の電流と
制御圧力の関係を記憶させておく正常作動記憶部と、実
作動時に比例制御弁電流に対応する圧力センサからの圧
力信号を、前記正常作動記憶部の値と比較する比較部と
、前記°正常作動記憶部の値と前記実作動時の圧力信号
が異なった場合、元電磁弁を閉じるよう作動する元電磁
弁制御部を設けたガス燃焼制御装置。(1) In the gas supply system to the gas burner, a solenoid valve, a proportional control valve, and a pressure sensor are arranged from the upstream side, and an electronic control device is provided to control these, and the proportional control device is installed in this electronic control device. A normal operation memory section stores the relationship between current and control pressure when the valve operates normally, and a pressure signal from a pressure sensor corresponding to the proportional control valve current during actual operation is stored as a value in the normal operation memory section. A gas combustion control device comprising: a comparison section for comparing the normal operation storage section with the pressure signal during actual operation; and a main solenoid valve control section that operates to close the main solenoid valve when the value in the normal operation storage section differs from the pressure signal during actual operation.
値と実作動時の圧力信号が異なった場合には、一定時間
経過後、元電磁弁を閉じるよう作動する元電磁弁制御部
を設けた特許請求の範囲第１項記載のガス燃焼制御装置
。(2) If the pressure value in the normal operation memory corresponding to the proportional control valve current differs from the pressure signal during actual operation, the original solenoid valve control unit that operates to close the original solenoid valve after a certain period of time has passed. A gas combustion control device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140198A JPS5843327A (en) | 1981-09-04 | 1981-09-04 | gas combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140198A JPS5843327A (en) | 1981-09-04 | 1981-09-04 | gas combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5843327A true JPS5843327A (en) | 1983-03-14 |
| JPS6127659B2 JPS6127659B2 (en) | 1986-06-26 |
Family
ID=15263188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56140198A Granted JPS5843327A (en) | 1981-09-04 | 1981-09-04 | gas combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843327A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127415A (en) * | 1984-07-17 | 1986-02-06 | Matsushita Electric Ind Co Ltd | Device to detect abnormality in gas control valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5566572B2 (en) * | 2007-11-07 | 2014-08-06 | パナソニック株式会社 | Combustion device, fuel processing device, and fuel cell power generation system |
-
1981
- 1981-09-04 JP JP56140198A patent/JPS5843327A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127415A (en) * | 1984-07-17 | 1986-02-06 | Matsushita Electric Ind Co Ltd | Device to detect abnormality in gas control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6127659B2 (en) | 1986-06-26 |
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