| 摘要 |
PURPOSE:To properly hold the contact pressure of a vane with a rotary sleeve in a high and a low pressure side and equalize the back pressure of the vane, by connecting a space, formed by a vane groove and a bottom surface of the vane, with a buffer chamber formed inside a rotor. CONSTITUTION:A space 19, formed by a vane groove 12 of a rotor 6 and the bottom surface of a vane 7, communicates with a buffer chamber 8, formed inside the rotor 6, through a communication hole 23. In this way, a compressor properly holding a contact pressure of the vane 7 with a rotary sleeve 5 in a low and a high pressure side, suppresses the contact of the sleeve 5 with a center housing 2 due to a deflection of the core of the rotary sleeve 5, enabling seizure mutually between the both sleeve and housing to prevented before occurrence. Further the contact of an end surface in a lengthwise direction of the vane 7 with the internal surface of side housings 3, 4 is suppressed as well as possible by suppressing uneven wearing of tapered shape in the lengthwise direction of the vane 7 due to equalization of its back pressure. As a result, seizure mutually between the vane 7 and the side housings 3, 4 and pitching of the vane 7 can be prevented before occurrence. |
