JPH0418261U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第３図は本考案の１実施例を示し
、第１図は系統図、第２図はコントローラの機能
ブロツク図、第３図は可変容量形圧縮機の容量可
変機構を示す縦断面図である。 ３０Ａ……可変容量形圧縮機、３０Ｂ……定容
量形圧縮機、４０……コントローラ、４７……判
別手段、４８……運転態様決定手段、２９……オ
イルレベルセンサ。 Figures 1 to 3 show one embodiment of the present invention, with Figure 1 being a system diagram, Figure 2 being a functional block diagram of the controller, and Figure 3 being a longitudinal section showing the variable displacement mechanism of a variable displacement compressor. It is a front view. 30A...variable displacement compressor, 30B...constant displacement compressor, 40...controller, 47...discrimination means, 48...operation mode determining means, 29...oil level sensor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 冷凍負荷に応じて容量が自動的に変化する可変
容量形圧縮機と定容量形圧縮機を冷媒回路内に並
列に組み込んでなる冷凍装置において、上記可変
容量形圧縮機にその中に貯溜される冷凍機油の油
面が危険値以下に低下したことを検知したとき作
動するオイルレベルセンサを設けるとともに上記
両圧縮機の運転中又は上記可変容量形圧縮機のみ
の運転中、上記オイルレベルセンサが作動したと
き上記可変容量形圧縮機を停止して上記定容量形
圧縮機を運転する制御手段を設けたことを特徴と
する冷凍装置。 In a refrigeration system in which a variable displacement compressor and a constant displacement compressor, the capacity of which changes automatically according to the refrigeration load, are installed in parallel in a refrigerant circuit, the refrigerant is stored in the variable displacement compressor. An oil level sensor is provided that operates when it is detected that the oil level of the refrigerating machine oil has fallen below a dangerous value, and the oil level sensor operates while both of the compressors are operating or only the variable displacement compressor is operating. A refrigeration system characterized by comprising a control means for stopping the variable displacement compressor and operating the constant displacement compressor when the above occurs.