| 摘要 |
PROBLEM TO BE SOLVED: To prevent performance from being lowered due to the leakage of a refrigerant during the normal operation by substantially zeroing the step between the end surface of a piston and the inner surface of the end plate of a fixed scroll in a scroll compressor having an operation capacity control mechanism for opening and closing a communication passage formed in the end plate of the fixed scroll. SOLUTION: This scroll compressor sets the dimensional tolerance of the piston 33 so that, with the communication passage 32 closed by the piston 33, the end surface 33f of the piston 33 is projected from the inner surface 21h of the end plate 21a of the fixed scroll 21. Also, where the portion of the fixed scroll 21 projecting from the inner surface 21h of the end plate 21a of the fixed scroll 21 with the communication passage 32 closed by the piston 33 is an end part 33g, at least the end part 33g is formed of a material with a wear resistance lower than that of a movable side lap 22b. COPYRIGHT: (C)2007,JPO&INPIT
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