| 摘要 |
PURPOSE:To make improvement in performance of a compressor body as a hole by forming an almost V-shaped opening at the inner circumferential side of a blade, while installing an oil pressure intake port interconnecting an interval between a high pressure oil passage formed in the shaft center of a rotating piston and the inner bottom side of a blade installing groove of the rotating piston. CONSTITUTION:At the time of rotation of a rotating piston, oil pressure in a high pressure state is fed to the inside of a blade installing groove 32 via an oil pressure intake port 43, and this high pressure state oil pressure is made to act on the side of an almost V-shaped opening 39 of a blade 33. Consequently, two-sided parts 44a, 44b of the opening 39 of the blade 33 can be strongly pressed to each wall at both sides of the blade installing groove 32 by dint of pressure of the high pressure oil being led into the inside of the blade installing groove 32. Accordingly, during operation of a compressor body 21, any gas leakage out of a gap between the blade installing groove 32 and the blade 33 is kept back and thus improvement in sealability is well promotable. |
