JPS62189563U

JPS62189563U -

Info

Publication number: JPS62189563U
Application number: JP7754886U
Authority: JP
Priority date: 1986-05-21
Filing date: 1986-05-21
Publication date: 1987-12-02
Also published as: JPH047491Y2

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、第２図及び第３図とも混合
冷媒サイクル図である。図面において、１は圧縮器、２は凝縮器、３は
第１（初段）気液分離器、４は第１キヤピラリチ
ユーブ（初段膨張手段）、５は第１（初段）カス
ケードコンデンサ、６は第２（次段）気液分離器
、７は第２キヤピラリチユーブ（次段膨張手段）
、８は第２（次段）カスケードコンデンサ、９は
第３（終段）気液分離器、１０は第３キヤピラリ
チユーブ（終段膨張手段）、１１は第３（終段）
カスケードコンデンサ、１２はキヤピラリチユー
ブ（膨張手段）、１３は蒸発器、１４は第２補助
コンデンサ、１５は第１補助コンデンサ、１６は
切換弁、１７は温度センサ、１８は制御回路。 The drawings show an embodiment of this invention and a conventional example, and FIGS. 1, 2, and 3 are mixed refrigerant cycle diagrams. In the drawings, 1 is a compressor, 2 is a condenser, 3 is a first (first stage) gas-liquid separator, 4 is a first capillary tube (first stage expansion means), 5 is a first (first stage) cascade condenser, and 6 is a first stage cascade condenser. Second (next stage) gas-liquid separator, 7 is second capillary tube (next stage expansion means)
, 8 is the second (next stage) cascade condenser, 9 is the third (final stage) gas-liquid separator, 10 is the third capillary tube (final stage expansion means), and 11 is the third (final stage)
A cascade condenser, 12 a capillary tube (expansion means), 13 an evaporator, 14 a second auxiliary condenser, 15 a first auxiliary condenser, 16 a switching valve, 17 a temperature sensor, and 18 a control circuit.

Claims

[Scope of claim for utility model registration] (1) A mixed refrigerant made by mixing various types of refrigerants is compressed, cooled in a condenser, and partially condensed. This gas refrigerant is led to the next-stage gas-liquid separator through one flow path of the first-stage cascade condenser, and this liquid refrigerant passes through the first-stage expansion means to the other flow path of the next-stage cascade condenser. The liquid refrigerant from the final stage cascade condenser is returned to the compressor through the other flow path of the first stage cascade condenser, and then connected to the next stage gas-liquid separator and cascade condenser in the same way. In a refrigerant device in which the gas refrigerant is guided to an evaporator via an expansion means, and the gas refrigerant from the evaporator is guided to the other flow path of the final stage cascade condenser, the liquid refrigerant outlet of the final stage gas-liquid separator is connected to a switching valve. The refrigerant device is connected to the final stage expansion means through one flow path of the switching valve, and is connected to the inlet of the expansion means connected to the evaporator through the other flow path of the switching valve. (2) The switching valve is operated by an electric signal and is connected to the output of a control circuit that inputs the output of a temperature sensor provided on the outlet side of the evaporator. refrigerant equipment. (3) The outlet of one flow path of the final stage cascade condenser is connected to the inlet of the expansion means connected to the evaporator through one flow path of the auxiliary cascade condenser, and the outlet of the evaporator is connected to the inlet of the expansion means connected to the evaporator. The refrigeration system according to claim 2, wherein an auxiliary cascade condenser is connected to the suction port of the compressor via the other flow path of each cascade condenser from the final stage to the first stage. .