JPH0216965U

JPH0216965U -

Info

Publication number: JPH0216965U
Application number: JP9431488U
Authority: JP
Priority date: 1988-07-14
Filing date: 1988-07-14
Publication date: 1990-02-02

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例による冷凍装置の
除霜制御回路を示すブロツク図、第２図は上記一
実施例による冷凍装置の動作を示すフロー図、第
３図はこの考案の一実施例を説明するための庫内
温度と蓄熱剤温度とバイパス電磁弁開閉状態を示
すタイミング図、第４図は従来の冷凍装置の冷凍
サイクルを示す構成図である。図中、１……圧縮機、２……凝縮器、３……絞
り装置、４……蒸発器、８ａ……バイパス配管、
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、１４，１５……第１、第２の電磁弁、
１６……バイパス電磁弁、１７……圧力調整弁、
２０……マイクロコンピユータ、２１……蓄熱剤
温度検出器。なお、図中同一符号は同一、又は相
当部分を示す。 Fig. 1 is a block diagram showing a defrosting control circuit of a refrigeration system according to an embodiment of this invention, Fig. 2 is a flow diagram showing the operation of a refrigeration system according to the above embodiment, and Fig. 3 is an implementation of this invention. FIG. 4 is a timing diagram showing the temperature inside the refrigerator, the temperature of the heat storage agent, and the opening/closing state of the bypass solenoid valve for explaining an example. FIG. 4 is a configuration diagram showing the refrigeration cycle of a conventional refrigeration system. In the figure, 1...compressor, 2...condenser, 3...throttle device, 4...evaporator, 8a...bypass piping,
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, 14, 15... First, second solenoid valve ,
16...Bypass solenoid valve, 17...Pressure regulating valve,
20... Microcomputer, 21... Heat storage agent temperature detector. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A high-pressure side heat exchange path whose inlet side is connected to the outlet side of a compressor that compresses refrigerant gas, a low-pressure side heat exchange path whose inlet side is connected to the outlet side of an evaporator for evaporating refrigerant liquid, and a heat storage agent. and a heat storage tank in which the high-pressure and low-pressure side heat exchange paths are disposed within the heat storage agent, and a bypass motor-operated valve provided in a bypass path that bypasses the low-pressure side heat exchange path, and a refrigerating cycle mode. and a heat storage agent temperature detector that detects the temperature of the heat storage agent in a refrigeration system that opens and closes the bypass motor-operated valve to select either the bypass path or the low-pressure side heat exchange path according to the hot gas defrost mode; A refrigeration system characterized by comprising an opening/closing means that temporarily closes the bypass electric valve when the detected temperature reaches a predetermined temperature or higher.