JPS58126668U

JPS58126668U - Refrigeration equipment

Info

Publication number: JPS58126668U
Application number: JP2291682U
Authority: JP
Inventors: 岩瀬　進; 哲三松木
Original assignee: 三菱電機株式会社
Priority date: 1982-02-19
Filing date: 1982-02-19
Publication date: 1983-08-27

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 drawings]

第１図は従来の冷凍装置の冷媒回路図、第２図はこの考
案の冷凍装置の一実施例の冷媒回路図、　。第３図はこの考案の冷凍装置における冷凍負荷の大きい
場合の冷凍サイクル図、第４図はこの考案の冷凍装置に
おける冷凍負荷の小さい場合の冷凍サイクル図である。１・・・第１圧縮要素、２・・・第２圧縮要素、３・・
・凝縮器、４・・・第１の絞り装置、５・・・蒸発器、
６・・・冷却器、７・・・第２の絞り装置、８・・・受
液器、１０・・・吐出管、１１．　１２．　１３．　１
６・・・液管、１４゜２０・・・ガス管、１５．１８・
・・吸入管、１８・・・熱交換コイル、２１・・・冷媒
回路切換装置、２２・・・圧縮機。なお、図中同一符号
は同一または相当部分を示す。FIG. 1 is a refrigerant circuit diagram of a conventional refrigeration system, and FIG. 2 is a refrigerant circuit diagram of an embodiment of the refrigeration system of this invention. FIG. 3 is a refrigeration cycle diagram of the refrigeration system of this invention when the refrigeration load is large, and FIG. 4 is a refrigeration cycle diagram of the refrigeration system of this invention when the refrigeration load is small. 1... First compression element, 2... Second compression element, 3...
- Condenser, 4... first throttle device, 5... evaporator,
6...Cooler, 7...Second expansion device, 8...Liquid receiver, 10...Discharge pipe, 11. 12. 13. 1
6...Liquid pipe, 14°20...Gas pipe, 15.18.
... Suction pipe, 18... Heat exchange coil, 21... Refrigerant circuit switching device, 22... Compressor. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A compressor in which the first compression element and the second compression element are integrally formed, and when the refrigeration load is large, the refrigeration discharged from the first compression element and the refrigerant discharged from the second compression element are merged into the discharge pipe. When the refrigeration load is small, the refrigerant circuit switching device switches the refrigerant circuit so that the refrigerant compressed and discharged by the first compression element is sucked into the second compression element, and when the refrigeration load is large, the refrigerant circuit switching device The refrigerant discharged from the element and the second compression element and merged into the discharge pipe is condensed in a condenser, and when the refrigeration load is small, the refrigerant is discharged from the second compression element and liquefied, and then connected to the cooler and the first throttle device. A first refrigerant circuit in which the refrigerant is evaporated and gasified in an evaporator and sucked into the first compression element, and the refrigerant is branched from the inlet side of the cooler in the first refrigerant circuit in both cases of large and small refrigeration loads. A refrigeration system comprising a second refrigerant circuit that subcools the refrigerant liquid in the cooler after decompressing a part of the liquid with a second throttle device and causes the second compression element to suck the evaporated refrigerant gas. .

(2) The refrigeration system according to claim 1, which is a registered utility model, characterized in that the displacement of the second compression element is smaller than that of the first compression element.