JPS59182721U

JPS59182721U - temperature control device

Info

Publication number: JPS59182721U
Application number: JP7649783U
Authority: JP
Inventors: 勝春松尾
Original assignee: 株式会社東芝
Priority date: 1983-05-19
Filing date: 1983-05-19
Publication date: 1984-12-05
Also published as: JPH0353300Y2

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 the drawing]

図面は本考案の一実施例を示すものであり、第１図は電
気回路図、第２図は過熱感知発熱体の斜視図、第３図は
感熱体の斜視図、第４図は電気回路中の電圧又は電流波
形を示す図である。図面中、１は電気毛布本体、２は過熱感知発熱体、２ｂ
はヒータ線（負荷）、３は感熱体（温度センサー）、６
はサイリスタ（スイッチング素子）、１４はコンデンサ
、１５はバイパスフィルタ回路、１６−は直流電源回路
、２３は同期回路、３２は直流化回路、５２は温度検出
回路、５３は制御回路、６４は位相検出回路である。The drawings show an embodiment of the present invention, in which Fig. 1 is an electric circuit diagram, Fig. 2 is a perspective view of an overheat sensing heating element, Fig. 3 is a perspective view of a heat sensitive element, and Fig. 4 is an electric circuit. It is a figure which shows the voltage or current waveform in the inside. In the drawing, 1 is the electric blanket body, 2 is the overheat sensing heating element, 2b
is the heater wire (load), 3 is the heat sensitive element (temperature sensor), 6
is a thyristor (switching element), 14 is a capacitor, 15 is a bypass filter circuit, 16- is a DC power supply circuit, 23 is a synchronization circuit, 32 is a DC conversion circuit, 52 is a temperature detection circuit, 53 is a control circuit, 64 is a phase detection circuit It is a circuit.

Claims

[Scope of utility model registration request]

In an AC power source, a load such as a heater and a switching element are connected in series, and the load is controlled to be turned on and off by opening and closing the switching element, and a heat-sensitive resistor is interposed between two sensing electrodes. a temperature sensor connected to the temperature sensor, a bypass filter circuit that receives the detected voltage of the temperature sensor as an input, and a temperature detection circuit that converts the output voltage of the bypass filter circuit into a direct current and compares it with a reference voltage;
The output of this temperature detection circuit causes the switching,
A control circuit that controls the element detects a phase difference between the phase of the AC power source and the phase of the output voltage of the bypass filter circuit, and enables the detection operation of the temperature detection circuit only when the two have a predetermined phase difference. and a phase detection circuit that operates the control circuit.