JPS58190360U - Refrigeration equipment - Google Patents

Abstract

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

Description

[Brief explanation of drawings]

FIG. 1 is a conventional refrigerant circuit diagram, and FIG. 2 is a refrigerant circuit diagram showing an embodiment of the present invention. 1 is a compressor, 2 is an air-cooled condenser, 3 is a liquid receiver, 5 is a pipe, 6 is a check valve, 7 is a pressure equalizing pipe, 8 is a check valve, and 24 is a solenoid valve. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A compressor that compresses refrigerant, an air-cooled condenser that condenses the compressed refrigerant gas by exchanging heat with air, a liquid receiver that stores the condensed liquid refrigerant, an outlet of the air-cooled condenser, and an inlet of the liquid receiver. In a refrigeration system that sequentially hot gas defrosts multiple evaporators using the high-pressure gas refrigerant of the compressor, a condensation pressure regulating valve or a check valve is provided in the piping connecting the air-cooled condenser. A pressure equalizing pipe that connects the upper part of the liquid receiver, and a solenoid valve and check valve that communicate only from the liquid receiver to the air-cooled condenser are installed in the middle of the above pressure equalizing pipe, and the above solenoid valve is closed during hot gas defrosting. A refrigeration device characterized by: