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US 2006/0216185 A1Published application
Hermetic rotary compressor
OwnerToru Aya, Toshiharu Yasu +1inventors
InventorsToru Aya, Toshiharu Yasu, Hiroshi Matsunaga
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Abstract
A hermetic rotary compressor operates two cylinders simultaneously in the regular operation; however it halts operating one of the cylinders when it selects an operation with a half capacity. A vane room of the halted cylinder is air-tightly sealed with respect to lubricant atmosphere in a hermetic case. An oil-supplying groove is provided to a vane groove of the halted cylinder, and lubricant is supplied to the oil-supplying groove in order to lubricate the vane.
Claims14
A hermetic rotary compressor for compressing refrigerant gas, the compressor comprising:
- a hermetic case;
- a rotary shaft including a first and a second off-center rollers;
- a first cylinder accommodating the first off-center roller;
- a second cylinder accommodating the second off-center roller and including a vane, a vane groove for holding the vane in a slidable manner, and a vane room for accommodating a rear end of the vane;
- a partition plate disposed between the first and the second cylinders, and air-tightly sealing a top face of the vane groove and a top face of the vane room;
- a bearing frame air-tightly sealing an underside of the vane groove and an underside of the vane room;
- and
- a pressure switching device for supplying one of a high pressure and a low pressure of a refrigerating cycle into the vane room, wherein an oil-supplying groove is disposed to the vane groove for supplying lubricant to the vane.
5 more elements
Dependencies are inferred from the claim text.