JPS582566U

JPS582566U - Refrigeration equipment

Info

Publication number: JPS582566U
Application number: JP9533281U
Authority: JP
Inventors: 治川井
Original assignee: 三菱電機株式会社
Priority date: 1981-06-26
Filing date: 1981-06-26
Publication date: 1983-01-08

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図は従来の冷凍装置の冷凍運転時の冷媒回路図で
ある。第２図は従来の冷凍装置の除霜運転時の冷媒回路
図である。第３図はこの考案に係る冷凍装置の一実施例
を示す冷媒回路図である。第４図及び第５図はこの考案
に係る冷凍装置の他の実施例を示す冷媒回路図である。図において、各図中同一符号を付しており、１　　　−
は圧縮機、２は四方弁、２ａ〜２ｄは第１〜第４の連絡
口、３は第１の熱交換器、４は第１の逆止弁、５は第１
の膨張弁、６は第２の熱交換器、７はアキュムレータ、
８は第２の逆止弁、９は第２の膨張弁、１０は側路管、
１１は電磁弁、１２・・・温度検出装置である。 □□- FIG. 1 is a refrigerant circuit diagram of a conventional refrigeration system during refrigeration operation. FIG. 2 is a refrigerant circuit diagram of a conventional refrigeration system during defrosting operation. FIG. 3 is a refrigerant circuit diagram showing an embodiment of the refrigeration system according to this invention. FIGS. 4 and 5 are refrigerant circuit diagrams showing other embodiments of the refrigeration system according to this invention. In the figures, the same symbols are given in each figure, 1 -
is a compressor, 2 is a four-way valve, 2a to 2d are first to fourth communication ports, 3 is a first heat exchanger, 4 is a first check valve, 5 is a first
, an expansion valve, 6 a second heat exchanger, 7 an accumulator,
8 is a second check valve, 9 is a second expansion valve, 10 is a side pipe,
11 is a solenoid valve, 12... is a temperature detection device. □□

Claims

[Scope of utility model registration request]

(1) A compressor that compresses refrigerant at high temperature and high pressure; a first heat exchanger that condenses the refrigerant discharged from the compressor supplied through the first and second communication ports of the four-way valve; a first expansion valve that depressurizes and expands the refrigerant from the first heat exchanger supplied via the first check valve; - a first expansion valve to which the refrigerant is supplied from the first expansion valve and exchanges heat with the load; 2 heat exchanger, the refrigerant evaporated in the second heat exchanger is supplied through the third and fourth communication ports of the four-way valve and is separated into a gas refrigerant and a liquid refrigerant, and the gas refrigerant is an accumulator for inhaling compression; a second check valve connected in parallel to the first expansion valve and in a direction opposite to the first check valve; a second check valve connected in parallel to the first check valve; A refrigeration system comprising: an expansion valve; and a side pipe provided between the discharge side of the compressor and the suction side of the compressor or the suction side of the accumulator and having a solenoid valve.

(2) The solenoid valve is the first four-way valve. The second contact point and the third
．． When the fourth communication port is in communication, it is closed, and the first port of the four-way valve is closed. A refrigeration system according to claim (1) of the utility model registration, which is configured to open for a predetermined time when the third communication port and the second and fourth communication ports are communicated with each other.

(3) A temperature detection device or a pressure detection device is provided on the suction side or the discharge side of the compressor, and when the detected temperature or the detected pressure decreases, the solenoid valve is opened for a predetermined time. 1) The refrigeration device described in section 1).