JPS58108505U

JPS58108505U - Control circuit of proportional control valve

Info

Publication number: JPS58108505U
Application number: JP560182U
Authority: JP
Inventors: 渡辺　光靖
Original assignee: 株式会社日立ホームテック
Priority date: 1982-01-18
Filing date: 1982-01-18
Publication date: 1983-07-23

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

[Brief explanation of drawings]

第１図は従来のデユーティ制御回路図、第２図ａ、　　
ｂは同人力電圧に応じた各出力パルス波形図、第３図は
本考案の一実施例による比例制御弁のパルステニューテ
ィと燃料供給量の関係を示した特性図、第４図は同比例
制御弁の制御回路図、第５図は同各部の電圧波形図、第
６図は同設定温度と実際温度の差による燃料供給量の関
係を示した図である。１・・・温度設定回路、２・・・差動増幅回路、３・・
・の柔ぎり波発生回路、４・・・比例制御弁駆動回路、
１０−１・・温度設定用や切替スイッチ、１３・・・温
度微調整用の可変抵抗器、１９・・・サーミスタ、３７
・・・比例制御弁、３８・・・温度設定切替用スイッチ
回路、３９・・・温度微調整用回路、４０・・・アナロ
グ電圧加算回路、３３−・・比較器。Figure 1 is a conventional duty control circuit diagram, Figure 2a,
b is a diagram of each output pulse waveform according to the human power voltage, FIG. 3 is a characteristic diagram showing the relationship between pulse tenacity and fuel supply amount of a proportional control valve according to an embodiment of the present invention, and FIG. 4 is a diagram of the same. FIG. 5 is a diagram of the control circuit of the proportional control valve, FIG. 5 is a diagram of voltage waveforms at various parts thereof, and FIG. 6 is a diagram showing the relationship between the fuel supply amount and the difference between the set temperature and the actual temperature. 1... Temperature setting circuit, 2... Differential amplifier circuit, 3...
- Soft wave generation circuit, 4... proportional control valve drive circuit,
10-1...Temperature setting and changeover switch, 13...Variable resistor for temperature fine adjustment, 19...Thermistor, 37
...Proportional control valve, 38--Temperature setting switching circuit, 39--Temperature fine adjustment circuit, 40--Analog voltage addition circuit, 33--Comparator.

Claims

[Scope of utility model registration request]

In a control circuit for a proportional control valve that uses a pulse drive method and continuously controls the fuel supply amount according to the operating rate of the pulse, a temperature setting switching switch circuit 38, a temperature fine adjustment circuit 39, and an analog voltage addition circuit 40 are used. The power from both the temperature setting circuit 1 and the thermistor 19 that converts room temperature, etc. into voltage is input to the differential amplifier circuit 2, and the output and voltage rise and fall waveforms are generated within a certain period and within a certain voltage range. For example, a control circuit for a proportional control valve is constituted by a circuit that inputs the output of the triangular wave generation circuit 3 to a comparator 33 and drives the proportional control valve 37 by the output.