Rotary hermetic compressor and refrigeration cycle system

Details Rotary hermetic compressor and refrigeration cycle system Rotary hermetic compressor and refrigeration cycle system

2007-11-06

2007-11-06

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

C418S011000, C418S063000, C418S212000, C418S270000

Reexamination Certificate

active

11302393

ABSTRACT:
A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressure guided to the cylinder chamber. A pressure shift mechanism which guides the suction pressure or discharge pressure has a branch pipe having a one end connected to a high pressure side of the refrigeration cycle, an other end connected to a suction pipe, and a first on-off valve in a midway portion, and a second on-off valve or a check valve which is provided in the suction pipe on a side upstream of a connection portion of the branch pipe and on a side downstream of an oil returning opening in an accumulator.

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International Search Report dated Nov. 2, 2004 for Appln. No. PCT/JP2004/008701.

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