Multicylindrical rotary compressor
AssigneeSanyo Electric Co., Ltd.
InventorsTakahiro Nishikawa, Hirotsugu Ogasawara, Masayuki Hara, Hiroyuki Sawabe
Life of this patent
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Abstract
There is disclosed a multicylindrical rotary compressor capable of improving an operation efficiency during a small-capacity operation, the compressor comprises a controller as a control unit which adjusts a rotation number of an electromotive element as a driving element and which controls an operation of a power saving mechanism, and the controller operates the power saving mechanism to connect a high-pressure chamber side of a first cylinder to a low-pressure chamber side of a second cylinder during the small-capacity operation of a refrigerant circuit constituted in a rotary compressor (the multicylindrical rotary compressor).
Claims2
A multicylindrical rotary compressor in which a driving element and first and second rotary compression elements driven by a rotation shaft of the driving element are stored in a sealed container,
- the first and second rotary compression elements comprising:
- first and second cylinders;
- first and second rollers fitted into eccentric portions formed on the rotation shaft to eccentrically rotate in the respective cylinders, respectively;
- and first and second vanes which abut on the first and second rollers to divide each cylinder into a low-pressure chamber side and a high-pressure chamber side, respectively,
- the compressor comprising:
- a power saving mechanism which connects the high-pressure chamber side of the first cylinder to the low-pressure chamber side of the second cylinder with a predetermined phase;
- and control means for controlling an operation of the power saving mechanism and a rotation number of the driving element,
- the control means operating the power saving mechanism during a small-capacity operation of a refrigerant circuit constituted in the multicylindrical rotary compressor to connect the high-pressure chamber side of the first cylinder to the low-pressure chamber side of the second cylinder and to thereby raise the rotation number of the driving element.
Dependencies are inferred from the claim text.