| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the contact of the end face of a piston and an end plate member, and to prevent seizure caused by a slide. <P>SOLUTION: This compressor comprises a cylinder 30 having a compression chamber 31 and a blade accommodation part 33 communicating with the compression chamber 31, a front head and a rear head which are arranged at axial both ends of the cylinder 30, and the piston arranged inside the compression chamber 31 and the blade accommodation part 33. The piston comprises an annular roller arranged at the compression chamber 31 and a blade which extend from the external peripheral face of the roller and arranged so as to advance or retreat to/from the blade accommodation part 33. On the inner peripheral surface of the cylinder 30, there are formed heat absorption regions which are formed of coating layers 36a larger in heat conductivity compared with the other region at the inner peripheral surface. The heat absorption regions are formed at a portion which defines a high-pressure chamber at the peripheral wall surface of the compression chamber 31 when the piston is at a lower dead point, and at the sidewall at the high-pressure chamber side in the blade accommodation part 33. <P>COPYRIGHT: (C)2012,JPO&INPIT |
