| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve lubricity of a piston, reliability and efficiency. <P>SOLUTION: An oil reservoir 135 and an oil supply hole 136 making a compression chamber 121 communicate with the oil reservoir 135 are provided above a cylinder block 120. The oil supply hole 136 is shifted so that its opening area is larger toward the anti-load side of a piston 122 in a compression cycle with respect to the axial center of the compression chamber 121. Accordingly, the wear of the sliding part of the piston 122 and the compression chamber 121 is prevented, and the lubricity is improved, so a hermetic compressor with high reliability and efficiency can be provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
