Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate
2005-04-26
2005-04-26
Jones, Melvin (Department: 3744)
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
C062S498000
Reexamination Certificate
active
06883346
ABSTRACT:
In a refrigerating apparatus (1) having application-side heat exchangers (41, 45, 51) for a plurality of systems for air-conditioning, for cold-storage/freezing and the like and a four-way switch valve (3C) and a plurality of check valves (7) on suction sides of compression mechanisms (2D,2E) and formed from three compressors (2A,2B,2C) to allow the operation states to be switched, the number of compressors (2A,2B,2C) used at air-conditioning side and cold-storage/freezing side is limited to two at maximum, thereby achieving a simple circuit configuration in which the number of the check valves (7) to be provided in the suction sides of the compression mechanisms (2D,2E) is reduced to one or two, suppressing the occurrence of chattering noise in check valves (7) and, also, preventing an ability from reducing due to a suction-side pressure loss.
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Sakae Satoru
Takegami Masaaki
Tanimoto Kenji
Ueno Takeo
Birch Stewart Kolasch & Birch, LLP.
Daikin Industries Ltd.
Jones Melvin
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