| 摘要 |
PROBLEM TO BE SOLVED: To provide a scroll fluid machine achieving a reduction in weight of a balance weight. SOLUTION: This scroll fluid machine includes: a fixed scroll; a turning scroll 800 engaged with the fixed scroll; a crankshaft 200 swirling and driving the turning scroll; and a shaft supporting portion 105 provided on the back surface of the turning scroll and axially movably engaged with the eccentric pin portion 202 of the crankshaft. The balance weight 415 is inserted and fixed to the eccentric pin portion. Further, an upper sealing portion 101 is provided between the balance weight and the turning scroll, and a lower sealing portion 102 is provided between the balance weight and a frame. A small hole 414 for intermittently supplying lubricating oil in a center space to a low-pressure space is formed in the lower surface of the balance weight opposed to the lower sealing portion. COPYRIGHT: (C)2011,JPO&INPIT
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