| 摘要 |
A scroll-type fluid machine comprises a stationary scroll member and an orbiting scroll member, each having an end plate and a spiral wrap projecting radially from the end plate, the stationary and orbiting scroll members being assembled with their wraps meshing with each other to define a plurality of compression chambers. A plurality of expanding and contracting actuators are secured on a frame and contact with the orbiting scroll member. The actuators are driven by respective A.C. voltages supplied from a driving circuit. The contact points between the actuators and the orbiting scroll member are progressively moved by expanding and contracting motions of the actuators energized by supplied voltages, the A.C. voltages for energizing the actuators being different in phase from each other so that the orbiting scroll member orbits without rotating on its own axis. The actuators also serve to confine an axial movement of the orbiting scroll member and to prevent the orbiting scroll member from disengaging from the stationary scroll member. With this arrangement, a compact, light-weight, oil-free and low-noise scroll-type fluid machine can be provided. |
| 申请人 |
HITACHI, LTD., TOKIO/TOKYO, JP |
发明人 |
TOJO, KENJI, KITASOMA, IBARAKI, JP;MACHIDA, SHIGERU, NISHIIBARAKI, IBARAKI, JP;MORI, KENJI, TSUCHIURA, JP |
