| 摘要 |
PROBLEM TO BE SOLVED: To improve a delivery flow rate and compression efficiency of a compressed fluid, by minimizing a clearance between a lap part of a fixed scroll and a lap part of a turning scroll. SOLUTION: The fixed scroll 3 is installed in a casing 1, and the turning scroll 12 is turnably installed in a state of it being opposed to the fixed scroll 3. A rotation preventive mechanism 21 by ball guides 22 and 23 and a ball 24, is arranged between the casing 1 and the turning scroll 12. A turning radius S1 determined by the rotation preventive mechanism 21 is set larger than a turning radius S2 determined by the lap parts 3B and 12B of the respective scrolls 3 and 12 (S1>S2). Thus, the turning scroll 12 is turnably moved in a state of contacting the mutual lap parts 3B and 12B. COPYRIGHT: (C)2008,JPO&INPIT
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