| 摘要 |
PURPOSE:To properly control the amount of supplied oil for a scroll compressor according to the number of revolution by forming balance holes through which a suction chamber and a back-pressure chamber communicate intermittently, accompanied by the turning movement of a turning scroll member. CONSTITUTION:In the back-pressure chamber 20 for supplying a back-pressure onto a turning scroll member 14, the lubicating oil supplied through an oil passage 6, etc. in a main shaft exists. Said lubricating oil is supplied into a suction chamber 22 through balance holes 26 and 27, mirror plate 15, and a sliding chamber 20a. Since said balance holes 26 and 27 are intermittently opened and closed by the turning movement of the mirror plate 15 of the turning scroll member 14, each flow-passage resistance of the balance holes 26 and 27 increases as the number of revolution of the compressor increases. Therefore, each proper amount of lubricating oil is supplied into the mirror plate sliding chamber and the suction chamber even if the compressor is operated at a high revolution speed.
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