JPS59128072U

JPS59128072U - Defrost device

Info

Publication number: JPS59128072U
Application number: JP2236883U
Authority: JP
Inventors: 河原　隆夫; 博伊藤
Original assignee: 三菱電機株式会社
Priority date: 1983-02-16
Filing date: 1983-02-16
Publication date: 1984-08-29

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の冷凍装置の冷媒回路図、第２図はこの考
案の冷凍装置の一実施例を示す冷媒系統図、第３図は同
上除霜装置における蓄熱剤加熱ヒータ部分の電気回路概
念図である。図中、１・・・圧縮機、２・・・凝縮器、３・・・絞り
装置、４・・・蒸発器、５・・・サクションアキューム
レータ、６・・・吐出管、７・・・液管、８・・・吸入
管、９・・・蓄熱槽、９ａ・・・蓄熱剤、１０・・・高
圧側熱交換路、１１・・・低圧側熱交換路、１２・・・
三方電磁弁、１３・・・逆止弁、１４〜１６・・・電磁
弁、１９・・・加熱ヒータ、２０・・・温度開閉器。な
お、図中、同一符号は同一または相当部分を示す。Fig. 1 is a refrigerant circuit diagram of a conventional refrigeration system, Fig. 2 is a refrigerant system diagram showing an embodiment of the refrigeration system of this invention, and Fig. 3 is an electrical circuit concept of the heat storage agent heater part in the defrosting system. It is a diagram. In the figure, 1...compressor, 2...condenser, 3...throttle device, 4...evaporator, 5...suction accumulator, 6...discharge pipe, 7...liquid Pipe, 8... Suction pipe, 9... Heat storage tank, 9a... Heat storage agent, 10... High pressure side heat exchange path, 11... Low pressure side heat exchange path, 12...
Three-way solenoid valve, 13... Check valve, 14-16... Solenoid valve, 19... Heater, 20... Temperature switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

During defrosting, the refrigerant discharged from the compressor is passed through the high-pressure side heat exchange path in the heat storage tank, and then through the evaporator to defrost the evaporator, and then passed through the low-pressure side heat exchange path in the heat storage tank to the compressor. In a refrigeration system that performs hot gas defrosting, a temperature switch and a heat storage agent heater that open and close by sensing the temperature of the heat storage agent are installed in the heat storage tank, and the temperature of the heat storage agent is lowered below a certain temperature. A defrosting device characterized in that when the temperature decreases, the heat storage agent heater is operated to maintain a minimum amount of heat storage necessary for the defrosting operation.