JPS5849163U

JPS5849163U - Refrigeration equipment operation control device

Info

Publication number: JPS5849163U
Application number: JP14256281U
Authority: JP
Inventors: 孝志池田; 北口　修; 昭治菊地
Original assignee: 株式会社日立製作所
Priority date: 1981-09-28
Filing date: 1981-09-28
Publication date: 1983-04-02

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]

図面は本考案に係わる冷凍装置め運転制御装置の一実施
例を示す制御回路図である。Ａ・・・電源回路、Ｂ、　Ｃ，Ｄ、　Ｅ・・・制御回路
、１゜２・・・サーモスタット、３．　４．　５・・・
補助継電器、６・・・タイマ、７・！・３の常開接点、
８・・・４の常開接点、９，１１・・・５の常閉接点、
１０．　１２．　１３・・・５の常開接点、１４．１６
・・・常開接点（第１圧縮機の除霜時作動）、１８・・
・常閉接点（第１圧縮機の除霜時作動）、１５．１９・
・・常閉接点（第２圧縮機の除霜時作動）、１７・・・
常開接点（第２圧縮機の除霜時作動）、２０・・・６の
開接点。The drawing is a control circuit diagram showing an embodiment of the refrigeration equipment operation control device according to the present invention. A...Power supply circuit, B, C, D, E...Control circuit, 1゜2...Thermostat, 3. 4. 5...
Auxiliary relay, 6... timer, 7.!・3 normally open contacts,
8...4 normally open contacts, 9, 11...5 normally closed contacts,
10. 12. 13...5 normally open contacts, 14.16
... Normally open contact (operates during defrosting of the first compressor), 18...
・Normally closed contact (operates during defrosting of the first compressor), 15.19・
・・Normally closed contact (operates during defrosting of the second compressor), 17...
Normally open contacts (activated during defrosting of the second compressor), 20...6 open contacts.

Claims

[Scope of utility model registration request]

A control circuit consisting of a normally closed contact of a low set temperature thermostat, a first compressor auxiliary relay, and a defrosting auxiliary relay connected in series, a high set temperature thermostat, a second compressor auxiliary relay, and a release circuit. A control circuit consisting of three contacts connected in series: the normally closed contact of the auxiliary relay, the open contact of the timer connected in parallel, and both normally open contacts activated during defrosting of the 1st and 2nd compressors. The control circuit, the self-holding contact of the auxiliary defrosting relay, and the normally open contact of the second compressor are It is formed by connecting in series a defrosting auxiliary relay of a circuit in which the normally closed contacts that are activated during defrosting are connected in series, and the normally open contacts that are activated during defrosting of the first compressor are connected in parallel. The control circuit and the normally open contact of the auxiliary relay of the first compressor and the normally closed contact of the auxiliary relay of the second compressor are connected in parallel, and the double open contact activated during defrosting of the 1.2 compressor and the compressor are connected in parallel. 1. An operating side control device for a refrigeration system, characterized in that a control circuit formed by connecting timers for sequential startup of the machines in series is connected thereto.