| 摘要 |
PURPOSE:To ensure smooth lubrication by forming a lube oil supply circuit inside a thrust bearing and supplying the lube oil to the bearing via pumping effect on the reciprocating motion of a ring body. CONSTITUTION:A thrust bearing 49 is round and a rotation restriction part 50 on the outside thereof gives a reciprocating movement. And expansion spaces 57 and 58 are formed by a closed space surrounded by the outer surface 55 of the thrust bearing 49, the internal surface 56 of a ring body 52, the plane 53 of a blade bearing and a plane at the side of a bearing part 48. A lube oil passage 59 is formed inside the thrust bearing 49 without inclusion of a space outside thereof. A lube oil, therefore, properly reacts to the rotary speed of a compressor and the supply thereof can be done properly independent of intake and delivery pressures.
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