JPS5994258U

JPS5994258U - Parallel compression refrigeration equipment

Info

Publication number: JPS5994258U
Application number: JP19020782U
Authority: JP
Inventors: 明原; 木村　誠夫; 敏明山口
Original assignee: 三菱電機株式会社
Priority date: 1982-12-14
Filing date: 1982-12-14
Publication date: 1984-06-26
Also published as: JPH0216073Y2

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図は従来の並列圧縮式冷凍装置の冷媒回路図、第２
図は第１図の並列圧縮式冷凍装置の容量制御運転の説明
図、第３図はこの考案の並列圧縮式冷凍装置の一実施例
の冷媒回路図、第４図は第３図の並列圧縮式冷凍装置の
容量制御運転の説明図である。１・・・並列圧縮式冷凍装置、１ａ・・・凝縮器、１ｂ
。ＩＣ・・・圧縮機、１ｄ・・・冷媒吐出管、１ｅ・・・
冷媒吸入管、１ｆ・・・均圧均油管、１ｇ・・・インバ
ータ、２・・・冷却装置、２ａ〜２Ｃ・・・ショーケー
ス。なお、図中同一−符号は同一または相当部分を示す
。Figure 1 is a refrigerant circuit diagram of a conventional parallel compression type refrigeration system;
The figure is an explanatory diagram of the capacity control operation of the parallel compression type refrigeration system shown in Figure 1, Figure 3 is a refrigerant circuit diagram of an embodiment of the parallel compression type refrigeration system of this invention, and Figure 4 is the parallel compression type shown in Figure 3. FIG. 2 is an explanatory diagram of capacity control operation of the type refrigeration system. 1... Parallel compression refrigeration device, 1a... Condenser, 1b
. IC...Compressor, 1d...Refrigerant discharge pipe, 1e...
Refrigerant suction pipe, 1f...Pressure equalization oil pipe, 1g...Inverter, 2...Cooling device, 2a to 2C...Show case. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A refrigeration system having a large-capacity and a small-capacity compressor with a rated capacity ratio of approximately 1:2 and a condenser connected to the compressor, a cooling system connected to this refrigeration system, and a large-capacity compressor as described above. An inverter that can continuously control only the compressor from 50 to 100%, and when the refrigeration load of the above cooling system is 33% or less, only the small capacity compressor is driven by AC power, and when the refrigeration load is 33 to 66%, the above The inverter drives only the large-capacity compressor, and the refrigeration load is 66 to 1.
00% is a parallel compression type refrigeration system comprising means for driving the small capacity compressor by an AC power supply 5 and driving the large capacity compressor by the ishiverter for parallel operation.