| 摘要 |
<p>PURPOSE:To reduce noise and vibration by forming a spiral protrusion on a driven or drive scroll, having its thickness which is slightly smaller at the inner peripheral side than at the outer peripheral side so that the protrusions on both scrolls always make contact with each other at their outer peripheral part. CONSTITUTION:A scroll fluid machine incorporates drive and driven scrolls respectively having spiral protrusions 1a, 2a each of which is formed on a flat surface and adapted to rotate respectively about different axes. The inner and outer curved surfaces 2f of the protrusion 2a of the driven scroll are formed on the inner and outer curved surface sides so that the thickness of the protrusion 2a is gradually decreased from the outer peripheral side to the inner peripheral side. With this arrangement, the spiral protrusions 1a, 2a of the drive and driven scrolls make contact with each other at their outer peripheral side, thereby it is possible to allow a pressing force Fo and a friction force Ff exerted on the protrusions 1a, 2a to be small, and to reduce variations in the forces.</p> |
