Rotary expansible chamber devices – With changeable working chamber magnitude – Spring or fluid biased movable member
Reexamination Certificate
2006-01-02
2009-06-02
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
With changeable working chamber magnitude
Spring or fluid biased movable member
C418S011000, C418S060000, C418S178000, C418S270000, C417S220000, C417S310000
Reexamination Certificate
active
07540727
ABSTRACT:
A capacity varying rotary compressor is provided. The compressor includes a cylinder mounted in a casing, and a vane pressure chamber provided at a rear side of a vane that divides an inner space of the cylinder into a suction chamber and a compression chamber. A pressure controlling unit supplies a discharge pressure or a suction pressure to the vane pressure chamber to thereby restrict or release a motion of the vane. A pressure leakage preventing unit couples the cylinder and bearings positioned at opposite sides of the cylinder to form the vane pressure chamber. A capacity to compress and discharge a refrigerant may be varied according to a load, thereby reducing power consumption of the compressor and simplifying assembly. Furthermore, pressure leakage from the vane pressure chamber may be prevented, thereby enhancing a capacity varying function.
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Chinese Office Action dated Mar. 21, 2008.
Byun Sang-Myung
Cha Kang-Wook
Cho Seoung-Yeon
Kim Jin-Soo
Lee Geun-Hyoung
Ked & Associates LLP
LG Electronics Inc.
Trieu Theresa
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