| 摘要 |
PROBLEM TO BE SOLVED: To enhance the durability of a vane and a roller to prevent damage, and to improve the compression efficiency of a compressor in an internally high pressure type of multistage compression type rotary compressor. SOLUTION: The compressor is provided with a cylinder 40 constituting a first rotary compressing element 32 and a roller 48 eccentrically rotating in the cylinder 40, a vane 52 abutting on the roller 48 and dividing the inside of the cylinder 40 into the high pressure chamber side and the low pressure chamber side, and a back pressure chamber 52A formed in the cylinder 40 and applying the back pressure to the vane 52. Refrigerant gas compressed by a second rotary compressing element 34 is discharged in a sealed container 12, and the high pressure refrigerant gas in the container 12 is discharged outside. Furthermore, the discharge noise reduction chamber 64 is communicated with the back pressure chamber 52A of the first element 32 by a communicating passage 100. COPYRIGHT: (C)2004,JPO
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