JPS5970816U

JPS5970816U - Refrigerant shortage alarm device

Info

Publication number: JPS5970816U
Application number: JP16626082U
Authority: JP
Inventors: 俊明植田; 佐用　耕作
Original assignee: 株式会社日立製作所
Priority date: 1982-11-04
Filing date: 1982-11-04
Publication date: 1984-05-14

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、従来技術の冷媒不足警報装置の接続図、第２
図は、従来技術における遅延装置のヒータ電圧印加状態
説明図、第３図は、本考案の一実施例の接続図、第４図
は、同じく遅延装置のヒータ電圧印加状態説明図、第５
図は、同じく他の実施例の接続図である。１・・・バッテリー、２・・・ヒユーズ、３・・・ファ
ンスイッチ、４・・・モードスイッチ、５・・・サーモ
スイッチ、６・・・低圧カットスイッチ、７・・・電磁
クラッチ、８・・・冷媒不足警報装置、９・・・スーパ
ーヒートスイッチ、１０・・・警報ランプ、１１・・・
積分型遅延装置、１２・・・ヒータ、１３・・・接続部
、１４・・・接続部、１５・・・接点、１６・・・接続
部、１７・・・接続呼、１８・・・接点。Figure 1 is a connection diagram of a conventional refrigerant shortage alarm device;
3 is a connection diagram of an embodiment of the present invention; FIG. 4 is a diagram illustrating the heater voltage application state of the delay device in the prior art; FIG.
The figure is a connection diagram of another embodiment as well. 1... Battery, 2... Fuse, 3... Fan switch, 4... Mode switch, 5... Thermo switch, 6... Low pressure cut switch, 7... Electromagnetic clutch, 8... ...Refrigerant shortage alarm device, 9...Super heat switch, 10...Warning lamp, 11...
Integral type delay device, 12... Heater, 13... Connection part, 14... Connection part, 15... Contact, 16... Connection part, 17... Connection call, 18... Contact .

Claims

[Scope of utility model registration request]

This is a refrigerant shortage warning device that is applied to automotive cooling systems that have a temperature control device that controls the drive and stop of the compressor to control the vehicle interior temperature to a set temperature, and detects superheat from the temperature and pressure of the refrigerant. It is equipped with a snap/action mechanism that switches the neighboring points when the super heat exceeds a predetermined value, and a super heat switch provided with a predetermined differential, and a contact switching signal of the super heat switch as an input signal. refrigerant shortage, comprising an integral type delay device that issues an output signal after a predetermined time, and the power for the alarm device is taken from the power source side of the compressor drive/stop control section of the temperature control device. Alarm device.