| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a helical blade type compressor with high-compression performance and high reliability by suppressing abrasion of a sliding part between a roller inner circumference face and a crank part of a rotary shaft even in long-term operation to improve sealability in the sliding part. SOLUTION: This helical blade type compressor 1 has a fitting part wherein the crank part 7a of the rotary shaft 7 is slidably fitted in a roller 9 which is eccentrically rotatably housed in a cylinder 8. The sliding part in the inner circumference face of the roller 9 allowing the sliding of the crank part 7a is a surface of an aluminum alloy that is a base material of the roller 9.</p> |
