| 摘要 |
PROBLEM TO BE SOLVED: To seasonably establish a low compression ratio in a scroll compressor, to improve productivity and reduce cost by forming both swing and fixed scrolls in the same shape, to facilitate balance weight calculation by forming a swing scroll boss part in cylindrical shape and to reduce a maintenance cost by facilitating the attachment and detachment of the fixed scroll. SOLUTION: The swing scroll 7A and the fixed scroll are formed in the same shape on both circular involute curve shape and semicircular arc combined shape. Machining is thereby simplified, high accuracy is easily attained, and a tip seal 17 is used for both scrolls. For stability of bearings fitted to an eccentric shaft 12 of the swing scroll 7A, the bearing close to the main bearing is made large to minimize the deviation of rotating operation.
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