JPS59151064U

JPS59151064U - Refrigeration equipment

Info

Publication number: JPS59151064U
Application number: JP4402383U
Authority: JP
Inventors: 根来　耕一; 茂林
Original assignee: 三菱電機株式会社
Priority date: 1983-03-26
Filing date: 1983-03-26
Publication date: 1984-10-09

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]

第１図は従来およびこの考案の冷凍装置の配管系統の説
明図、第２図は従来の冷凍装置の運転制御装置の要部の
電気回路図、第３図はこの考案の冷凍装置の一実施例に
よる運転制御装置の要部の電気回路図である。１・・・圧縮機、４．５・・・蒸発器、？、　　１１．
　１２・・・電磁弁、９．１０・・・膨張弁（絞り装置
）、１５・・・低圧側電磁弁、１６・・・高圧側電磁弁
、１８・・・低圧圧力開閉器、２１・・・電磁接触器の
コイル部、２２・・・除霜用タイマの駆動モータ、２３
・・・除霜用タイマの接点部、２４ａ、２４ｂ・・・着
霜検知器のａ接点、ｂ接点、２５・・・低圧側電磁弁の
コイル部、２６・・・高圧側電磁弁のコイル部、２７・
・・第１の電磁弁のコイル部、２８・・・低圧圧力開閉
器の接点。なお、図中同一符号は同一または相当部分を示す。Fig. 1 is an explanatory diagram of the piping system of a conventional refrigeration system and that of this invention, Fig. 2 is an electric circuit diagram of the main part of the operation control device of the conventional refrigeration system, and Fig. 3 is an implementation of the refrigeration system of this invention. FIG. 2 is an electrical circuit diagram of main parts of the operation control device according to an example. 1... Compressor, 4.5... Evaporator, ? , 11.
12... Solenoid valve, 9.10... Expansion valve (throttle device), 15... Low pressure side solenoid valve, 16... High pressure side solenoid valve, 18... Low pressure pressure switch, 21...・Magnetic contactor coil part, 22...defrosting timer drive motor, 23
...Contact part of defrosting timer, 24a, 24b...A contact, B contact of frost detector, 25...Coil part of low pressure side solenoid valve, 26...Coil of high pressure side solenoid valve Department, 27・
... Coil part of the first solenoid valve, 28 ... Contact of the low pressure switch. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A compressor, a condenser, and a plurality of evaporators arranged in parallel with each other and each having a throttling device are provided, and one of the evaporators can be completely discharged from the compressor by the operation of an operation control device. In a refrigeration system that defrosts with a refrigerant and evaporates this refrigerant in the remaining evaporator, the operation control device is provided with a frost detector that detects the amount of frost on the remaining evaporator, and the A refrigeration system characterized in that the one evaporator is operated to defrost when the evaporator detects a predetermined amount of frost.