JPS63101764U

JPS63101764U -

Info

Publication number: JPS63101764U
Application number: JP19655286U
Authority: JP
Priority date: 1986-12-19
Filing date: 1986-12-19
Publication date: 1988-07-02

Description

[Brief explanation of drawings]

第１図は、この考案に係わる並列圧縮式冷凍装
置を示す部分構成図、第２図は従来の並列圧縮器
冷凍装置を示す部分構成図である。１，２はそれ
ぞれ第１、第２の圧縮機、１０１，２０１はそれ
ぞれ第１、第２の圧縮機１，２のクランクケース
、１０２，２０２はそれぞれ第１、第２の圧縮機
１，２の隔壁、１０３，２０３はそれぞれ第１、
第２の圧縮機１，２吸入室、１０４，２０４はそ
れぞれ第１、第２の圧縮機１，２の油溜室、１１
１，２１１はそれぞれ第１、第２の圧縮機１，２
の第１、第２の逆止弁、３は液分離器、５，６は
それぞれ第１、第２のガス吸入管、１１は逆止弁
、１２―１は第１の返油管、１２―２は第２の返
油管、１３は電磁弁、１４は均油管、１５は逆止
弁、１６は電磁弁である。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 partial block diagram showing a parallel compression refrigeration system according to this invention, and FIG. 2 is a partial block diagram showing a conventional parallel compressor refrigeration system. 1 and 2 are the first and second compressors, respectively; 101 and 201 are the crankcases of the first and second compressors 1 and 2, respectively; and 102 and 202 are the first and second compressors 1 and 2, respectively. The partition walls 103 and 203 are respectively the first and
The suction chambers 104 and 204 of the second compressors 1 and 2 are the oil sump chambers and 11 of the first and second compressors 1 and 2, respectively.
1 and 211 are the first and second compressors 1 and 2, respectively.
, 3 is a liquid separator, 5 and 6 are first and second gas suction pipes, respectively, 11 is a check valve, 12-1 is a first oil return pipe, 12- 2 is a second oil return pipe, 13 is a solenoid valve, 14 is an oil equalizing pipe, 15 is a check valve, and 16 is a solenoid valve. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

first and second compressors each having a structure in which the inside of the crankcase is divided into a suction chamber and an oil sump chamber by a partition wall; the first and second compressors are provided on the suction side of the first and second compressors; a liquid separator that separates liquid refrigerant and lubricating oil; a first gas suction pipe that connects the upper part of the liquid separator and the suction chamber of the first compressor; and the upper part of the liquid separator and the second a second gas suction pipe connected to the suction chamber of the compressor and configured to have a pressure loss greater than the pressure loss of the first gas suction pipe; A first oil return pipe connected to the suction chamber, a check valve provided in the middle of the first oil return pipe, and a second oil return pipe branched from the liquid separator side of the check valve and connected to the second compressor. an oil pipe, a solenoid valve disposed midway through the second oil return pipe, an oil equalizing pipe communicating from the oil reservoir chamber of the first compressor to the oil reservoir chamber of the second compressor, and a solenoid valve and a check check midway through the oil equalizing pipe. Parallel compression refrigeration equipment with valves.