JPS62189564U

JPS62189564U -

Info

Publication number: JPS62189564U
Application number: JP7754986U
Authority: JP
Priority date: 1986-05-21
Filing date: 1986-05-21
Publication date: 1987-12-02

Description

[Brief explanation of the drawing]

図面は、この考案の実施例及び従来例を示すも
のであつて、第１図及び第２図は冷凍サイクルの
接続図である。図面において、１は圧縮機、２は凝縮器、３，
６，９はそれぞれ第１、第２、第３気液分離器、
４，７，１０はそれぞれ第１、第２、第３キヤピ
ラリチユーブ、５，８，１１はそれぞれ第１、第
２、第３カスケードコンデンサ、１２は第４キヤ
ピラリチユーブ、１３は蒸発器、１５は膨張タン
ク、１６，１７は開閉弁である。 The drawings show an embodiment of this invention and a conventional example, and FIGS. 1 and 2 are connection diagrams of a refrigeration cycle. In the drawing, 1 is a compressor, 2 is a condenser, 3,
6 and 9 are first, second, and third gas-liquid separators, respectively;
4, 7, and 10 are first, second, and third capillary tubes, respectively; 5, 8, and 11 are first, second, and third cascade condensers, respectively; 12 is a fourth capillary tube; 13 is an evaporator; 15 is an expansion tank, and 16 and 17 are on-off valves.

Claims

[Claims for Utility Model Registration] (1) A mixed refrigerant consisting of multiple refrigerants with different boiling points is compressed, and the refrigerant is partially condensed in a condenser, and the gas-liquid mixed refrigerant is converted into a gas refrigerant in the first stage gas-liquid separator. This gas refrigerant is guided to the next stage gas-liquid separator through one channel of the first stage cascade condenser, and this liquid refrigerant is guided to the other channel of the first stage cascade condenser through the first stage expansion means. Then, the next stage gas-liquid separator and cascade condenser are connected in the same way, and the liquid refrigerant from the final stage cascade condenser is guided to the evaporator through expansion means, and an expansion tank is connected in the path from the evaporator to the compressor. A refrigeration system comprising: one port and the other port of the expansion tank connected to an inlet port and a discharge port of the compressor via valves, respectively. (2) The valve is an on-off valve controlled by an electric signal, which inputs the output of a pressure detector provided on the discharge port side of the compressor, and outputs a first signal when this pressure is higher than an allowable value. The refrigeration system according to claim 1, wherein the first signal and the second signal of a control circuit that outputs a second signal when the pressure is lower than an allowable value are connected to the on-off valve. (3) The control circuit has a predetermined pressure range set between a predetermined pressure value for outputting the first signal and a predetermined pressure value for outputting the second signal. Refrigeration equipment as described in section. (4) Claim 1 of the utility model registration, in which the expansion tank and each of the valves are connected by a flow rate adjusting means;
Refrigeration equipment according to paragraphs 2 and 3.