JPS6329166B2 - - Google Patents
Info
- Publication number
- JPS6329166B2 JPS6329166B2 JP14292679A JP14292679A JPS6329166B2 JP S6329166 B2 JPS6329166 B2 JP S6329166B2 JP 14292679 A JP14292679 A JP 14292679A JP 14292679 A JP14292679 A JP 14292679A JP S6329166 B2 JPS6329166 B2 JP S6329166B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- fan motor
- output
- voltage comparator
- fuel supply
- 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
- 239000000446 fuel Substances 0.000 claims description 20
- 230000002159 abnormal effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 238000009499 grossing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明は強制給排気式燃焼器の制御装置に関す
るものである。室内暖房用の強制給排気式燃焼器
においては、強制給排気用フアンと結合した発電
機の出力によつて燃料供給弁を制御する方式があ
る。従来のこの方式においては、フアンモータの
回転数が所定の回転数に達したときの発電機の出
力によつて燃料供給弁を開くよう構成されてお
り、回転数が所定の値以上の場合は燃料供給弁は
開いている。したがつて、フアンによる強制給排
気が十分に行なわれないとき、例えば給排気管が
つまつたり、あるいはフアンの回転軸への固定が
ゆるんでフアンが空まわりしている場合でもフア
ンモータが所定の回転数以上の回転数で回転して
いる限り、燃焼器は燃焼を続ける。本発明はフア
ンによる強制給排気が十分に行なわれないとき、
すなわちフアンモータの負荷が低下してその回転
数が異常上昇したときに燃料供給弁を閉じるよう
制御するものであつて、強制給排気式燃焼器の使
用を安全にし、その信頼度を高めることを目的と
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a forced air supply and exhaust type combustor. In a forced air supply/exhaust type combustor for room heating, there is a method in which a fuel supply valve is controlled by the output of a generator coupled to a forced air supply/exhaust fan. In this conventional system, the fuel supply valve is configured to open depending on the output of the generator when the rotation speed of the fan motor reaches a predetermined rotation speed, and when the rotation speed exceeds a predetermined value, the fuel supply valve is opened. Fuel supply valve is open. Therefore, even if forced air supply and exhaust by the fan is not performed sufficiently, for example, if the air supply and exhaust pipe is clogged, or if the fan is spinning idle due to loosening of the fan's fixation to the rotating shaft, the fan motor will not operate properly. The combustor continues to burn as long as it rotates at a rotational speed greater than or equal to the rotational speed of the engine. In the present invention, when the forced air supply and exhaust by the fan is not sufficiently performed,
In other words, the system controls the fuel supply valve to close when the load on the fan motor decreases and its rotational speed increases abnormally, making the use of forced air intake and exhaust type combustors safe and increasing their reliability. purpose.
本発明の実施例を第１図について説明する。１
は交流電源、２はメインスイツチ、３は強制給排
気用フアンのフアンモータ、４はフアンモータ３
の回路スイツチである。５はフアンモータ３の回
転軸に取付けたマグネツト６とコイル７とよりな
る回転速度検出用の発電機で、その出力は整流回
路８、平滑コンデンサ９および抵抗１０を介して
制御用信号になる。１１はこの制御装置の電源変
圧器で２次側に整流回路１２が接続されており、
整流回路１２の直流出力側には平滑コンデンサ１
３と、制御回路１４と、燃料供給弁１５およびリ
レースイツチ１６が接続されている。制御回路１
４は種火を検出して温度検出器の出力によりフア
ンモータ３の回路スイツチ４の開閉制御を行な
う。１７は定電圧ダイオード、１８はその電圧安
定用の並列コンデンサ、１９は直列抵抗で、これ
らはフアンモータ３の回転速度検出回路Ｍおよび
その異常回転速度検出回路Ｎの動作用直流電圧を
供給する。２０は第１のトランジスタ２１と直列
に直流電源に接続されたリレーで、逆電圧阻止用
のダイオード２２を並列に有し、燃料供給弁１５
のリレースイツチ１６を制御する。 An embodiment of the invention will be described with reference to FIG. 1
is the AC power supply, 2 is the main switch, 3 is the fan motor of the forced air supply/exhaust fan, 4 is the fan motor 3
This is a circuit switch. Reference numeral 5 denotes a generator for detecting rotational speed, which is comprised of a magnet 6 and a coil 7 attached to the rotating shaft of the fan motor 3, and its output becomes a control signal via a rectifier circuit 8, a smoothing capacitor 9, and a resistor 10. Reference numeral 11 is a power transformer for this control device, and a rectifier circuit 12 is connected to the secondary side.
A smoothing capacitor 1 is connected to the DC output side of the rectifier circuit 12.
3, a control circuit 14, a fuel supply valve 15 and a relay switch 16 are connected. Control circuit 1
Reference numeral 4 detects the pilot flame and controls the opening and closing of the circuit switch 4 of the fan motor 3 based on the output of the temperature detector. 17 is a constant voltage diode, 18 is a parallel capacitor for voltage stabilization, and 19 is a series resistor, which supplies a DC voltage for operation of the rotational speed detection circuit M of the fan motor 3 and its abnormal rotational speed detection circuit N. A relay 20 is connected to a DC power supply in series with the first transistor 21, has a diode 22 for blocking reverse voltage in parallel, and is connected to the fuel supply valve 15.
The relay switch 16 is controlled.
２３および２４は回転速度検出回路Ｍおよび異
常回転速度検出回路Ｎを構成する第１および第２
の電圧比較器で、その一方の入力端子２３Ａ，２
４Ａには抵抗２５，２６および抵抗２７，２８に
よつて定電圧ダイオード１７の両端電圧を分圧し
た基準電圧が印加され、他方の入力端子２３Ｂ，
２４Ｂには発電機５によつて検出された検出電圧
が印加される。２３Ｃ，２３Ｄおよび２４Ｃ，２
４Ｄは電源端子である。第１の電圧比較器２３の
出力端子２３Ｅは抵抗２９，３０，３１を介して
第１のトランジスタ２１のベースに接続され、第
２の電圧比較器２４の出力端子２４Ｅは抵抗３
２，３３，３４を介して第２のトランジスタ３５
のベースに接続されている。２３Ａおよび２４Ａ
はまた、抵抗３６，３７およびダイオード３８，
３９を介してトランジスタ２１および３５のコレ
クタにそれぞれ接続され、２３Ｅはトランジスタ
３５のコレクタに接続されている。 23 and 24 are first and second circuits constituting the rotational speed detection circuit M and the abnormal rotational speed detection circuit N.
voltage comparator, one input terminal 23A, 2
A reference voltage obtained by dividing the voltage across the constant voltage diode 17 by resistors 25, 26 and resistors 27, 28 is applied to 4A, and the other input terminal 23B,
A detection voltage detected by the generator 5 is applied to 24B. 23C, 23D and 24C, 2
4D is a power supply terminal. The output terminal 23E of the first voltage comparator 23 is connected to the base of the first transistor 21 via resistors 29, 30, 31, and the output terminal 24E of the second voltage comparator 24 is connected to the base of the first transistor 21 via resistors 29, 30, 31.
2, 33, 34 through the second transistor 35
connected to the base of. 23A and 24A
also includes resistors 36, 37 and diodes 38,
39 are connected to the collectors of transistors 21 and 35, respectively, and 23E is connected to the collector of transistor 35.
次にその作用を説明する。メインスイツチ２を
投入し、コツク操作により点火器を動作させてパ
イロツトバーナに点火すると種火が検出され、温
度検出器の出力により制御回路１４はフアンモー
タ３の回路スイツチ４を閉じる。フアンモータ３
の駆動によつて発電機５には第２図に線Ｒで示す
ように発電機５の回転数（フアンモータ３の回転
数）に比例した出力電圧が発生する。この出力電
圧が第１電圧比較器２３の入力端子２３Ａに加え
てある正常回転時の基準電圧をこえたとき、第１
電圧比較器２３の出力端子２３ＥはＨとなり、第
１のトランジスタ２１が導通する。したがつてリ
レー２０に電流が流れ、リレースイツチ１６が閉
じ、燃料供給弁１５が開いてバーナに燃料を供給
する。 Next, its effect will be explained. When the main switch 2 is turned on and the pilot burner is ignited by operating the igniter by operating the button, the pilot flame is detected, and the control circuit 14 closes the circuit switch 4 of the fan motor 3 based on the output of the temperature detector. fan motor 3
As a result of the drive, an output voltage proportional to the rotational speed of the generator 5 (the rotational speed of the fan motor 3) is generated in the generator 5 as shown by the line R in FIG. When this output voltage exceeds the reference voltage at normal rotation, which is added to the input terminal 23A of the first voltage comparator 23, the first
The output terminal 23E of the voltage comparator 23 becomes H, and the first transistor 21 becomes conductive. Current therefore flows through relay 20, closing relay switch 16 and opening fuel supply valve 15 to supply fuel to the burner.
以上は強制給排気用フアンが正常に回転してい
るときの回転速度検出回路Ｍの作用である。次
に、給排気筒がつまつたり、あるいはフアンの欠
損、又は空まわりなどの事故によつて強制給排気
が十分に行なわれないときはフアンモータ３は負
荷の減少によつて回転速度が増加する。したがつ
て発電機５の出力電圧は上昇し、この電圧が第２
電圧比較器２４の入力端子２４Ａに加えてある異
常回転時の基準電圧をこえたとき、第２電圧比較
器２４の出力端子２４ＥはＨとなり、第２トラン
ジスタ３５が導通する。第２トランジスタ３５が
オンになると第１電圧比較器２３の出力端子２３
Ｅは強制的にＬになるので第１トランジスタ２１
はオフとなり、リレースイツチ１６が開いて燃料
供給弁１５は閉じる。異常回転速度検出回路Ｎは
以上のように作用する。 The above is the operation of the rotational speed detection circuit M when the forced air supply/exhaust fan is rotating normally. Next, if forced air supply and exhaust cannot be performed sufficiently due to an accident such as a blockage in the supply/exhaust pipe, a missing fan, or an accident such as idle rotation, the fan motor 3 will increase its rotational speed due to the decrease in load. do. Therefore, the output voltage of the generator 5 increases, and this voltage
When the input terminal 24A of the voltage comparator 24 exceeds a certain reference voltage at the time of abnormal rotation, the output terminal 24E of the second voltage comparator 24 becomes H, and the second transistor 35 becomes conductive. When the second transistor 35 is turned on, the output terminal 23 of the first voltage comparator 23
Since E is forced to become L, the first transistor 21
is turned off, the relay switch 16 opens and the fuel supply valve 15 closes. The abnormal rotational speed detection circuit N operates as described above.
第２図および第３図において、Ｐは第１電圧比
較器２３の入力端子２３Ａに加えられるフアンモ
ータ３の正常回転に対する基準電圧であり、Ｑは
第２電圧比較器２４の入力端子２４Ａに加えられ
る異常回転に対する基準電圧である。フアンモー
タ３の正常回転時における発電機５の出力電圧は
第３図Ｓに、異常回転時における発電機５の出力
電圧は同図Ｔに示すとおりである。 In FIGS. 2 and 3, P is the reference voltage applied to the input terminal 23A of the first voltage comparator 23 for normal rotation of the fan motor 3, and Q is the reference voltage applied to the input terminal 24A of the second voltage comparator 24. This is the reference voltage for abnormal rotation. The output voltage of the generator 5 when the fan motor 3 rotates normally is shown in FIG. 3S, and the output voltage of the generator 5 when the fan motor 3 rotates abnormally is shown in FIG. 3T.
以上述べたように本発明は、強制給排気用フア
ンのフアンモータ３の回転数に比例した電圧を発
生する発電機５の出力によつて燃料供給弁１５を
制御する制御回路において、前記発電機５の出力
電圧を前記フアンモータの正常回転時の基準電圧
と比較する第１の電圧比較器２３と、異常回転時
の基準電圧と比較する第２の電圧比較器２４とを
設け、前記第１の電圧比較器２３は前記フアンモ
ータ３の正常回転時にその出力によつて前記燃料
供給弁１５を開き、前記第２の電圧比較器２４は
前記フアンモータ３の回転数が異常上昇したとき
にその出力によつて前記燃料供給弁１５を閉じる
よう構成されている。 As described above, the present invention provides a control circuit that controls the fuel supply valve 15 by the output of the generator 5 that generates a voltage proportional to the rotation speed of the fan motor 3 of a forced air supply/exhaust fan. A first voltage comparator 23 that compares the output voltage of the fan motor 5 with a reference voltage during normal rotation of the fan motor, and a second voltage comparator 24 that compares the output voltage of the fan motor with a reference voltage during abnormal rotation. The voltage comparator 23 uses its output to open the fuel supply valve 15 when the fan motor 3 rotates normally, and the second voltage comparator 24 opens the fuel supply valve 15 when the fan motor 3 has an abnormally high rotation speed. The fuel supply valve 15 is configured to be closed by the output.
以上述べたように本発明は発電機の出力電圧を
電圧比較器によつて検出するため、フアンモータ
の正常回転および異常回転をきわめて容易に、か
つ正確に検出することができ、かつ基準電圧を変
更することが可能であるため、給排気条件の異な
る燃焼器への対応が簡単であるなどの効果を有す
る。したがつて、強制給排気式燃焼器の給排気管
がつまつたり、あるいは給排気用フアンの欠損、
空まわり等の事故によつて給排気が正常に行なわ
れないときは燃料器に対する燃料の供給を停止し
て強制給排気式燃焼器の使用を安全にし、その信
頼度を高めるすぐれた効果を有する。 As described above, the present invention detects the output voltage of the generator using a voltage comparator, so that normal rotation and abnormal rotation of the fan motor can be detected very easily and accurately. Since it can be changed, it has the advantage of being easy to adapt to combustors with different supply and exhaust conditions. Therefore, the air supply and exhaust pipe of the forced air supply and exhaust type combustor may become clogged, or the air supply and exhaust fan may be damaged.
When supply and exhaust cannot be performed normally due to an accident such as idle running, the fuel supply to the fuel unit is stopped, making the use of forced supply and exhaust type combustors safe, and has an excellent effect of increasing its reliability. .
第１図：本発明の実施例の電気回路図、第２
図：発電機の発生電圧と回転数との関係を示すグ
ラフ、第３図：フアンモータの正常回転時と異常
回転時における発電機の発生電圧を示すグラフ。
１……交流電源、２……メインスイツチ、３…
…フアンモータ、４……回路スイツチ、５……発
電機、６……マグネツト、７……コイル、８，１
２……整流回路、９，１３……平滑コンデンサ、
１０……抵抗、１１……電源変圧器、１４……制
御回路、１５……燃料供給弁、１６……リレース
イツチ、１７……定電圧ダイオード、１８……並
列コンデンサ、１９……直列抵抗、２０……リレ
ー、２１……第１のトランジスタ、２２……ダイ
オード、２３……第１の電圧比較器、２４……第
２の電圧比較器、２５，２６，２７，２８，２
９，３０，３１，３２，３３，３４……抵抗、３
５……第２のトランジスタ、３６，３７……抵
抗、３８，３９……ダイオード。
Fig. 1: Electrical circuit diagram of an embodiment of the present invention, Fig. 2
Figure: A graph showing the relationship between the voltage generated by the generator and the rotation speed. Figure 3: A graph showing the voltage generated by the generator when the fan motor rotates normally and when it rotates abnormally. 1... AC power supply, 2... Main switch, 3...
...Fan motor, 4...Circuit switch, 5...Generator, 6...Magnet, 7...Coil, 8,1
2... Rectifier circuit, 9, 13... Smoothing capacitor,
10... Resistor, 11... Power transformer, 14... Control circuit, 15... Fuel supply valve, 16... Relay switch, 17... Constant voltage diode, 18... Parallel capacitor, 19... Series resistor, 20... Relay, 21... First transistor, 22... Diode, 23... First voltage comparator, 24... Second voltage comparator, 25, 26, 27, 28, 2
9, 30, 31, 32, 33, 34...Resistance, 3
5... Second transistor, 36, 37... Resistor, 38, 39... Diode.
Claims (1)
に比例した電圧を発生する発電機の出力によつて
燃料供給弁を制御する制御回路において、前記発
電機の出力電圧を前記フアンモータの正常回転時
の基準電圧と比較する第１の電圧比較器と、異常
回転時の基準電圧と比較する第２の電圧比較器と
を設け、前記第１の電圧比較器は前記フアンモー
タの正常回転時にその出力によつて前記燃料供給
弁を開き、前記第２の電圧比較器は前記フアンモ
ータの回転数が異常上昇したときにその出力によ
つて前記燃料供給弁を閉じるよう構成されている
ことを特徴とする強制給排気式燃焼器の制御装
置。1. In a control circuit that controls a fuel supply valve by the output of a generator that generates a voltage proportional to the rotation speed of a fan motor of a forced air supply/exhaust fan, the output voltage of the generator is set to a value when the fan motor is normally rotating. a first voltage comparator that compares the output with a reference voltage of the fan motor; and a second voltage comparator that compares the output with the reference voltage when the fan motor rotates normally; The fuel supply valve is opened by the second voltage comparator, and the second voltage comparator is configured to close the fuel supply valve by its output when the rotational speed of the fan motor increases abnormally. A control device for a forced air supply and exhaust type combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14292679A JPS5666626A (en) | 1979-11-05 | 1979-11-05 | Controlling device for forced air supply and exhaustion type burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14292679A JPS5666626A (en) | 1979-11-05 | 1979-11-05 | Controlling device for forced air supply and exhaustion type burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5666626A JPS5666626A (en) | 1981-06-05 |
| JPS6329166B2 true JPS6329166B2 (en) | 1988-06-13 |
Family
ID=15326839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14292679A Granted JPS5666626A (en) | 1979-11-05 | 1979-11-05 | Controlling device for forced air supply and exhaustion type burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5666626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02150882A (en) * | 1988-12-01 | 1990-06-11 | Matsushita Electric Ind Co Ltd | Cleaning mechanism for image forming element |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06221552A (en) * | 1993-09-27 | 1994-08-09 | Sanyo Electric Co Ltd | Combustion controller |
-
1979
- 1979-11-05 JP JP14292679A patent/JPS5666626A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02150882A (en) * | 1988-12-01 | 1990-06-11 | Matsushita Electric Ind Co Ltd | Cleaning mechanism for image forming element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5666626A (en) | 1981-06-05 |
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