| 摘要 |
PURPOSE:To eliminate the need for using a rotation-preventing revolution mechanism and miniaturize a unit by rotatably supporting both scrolls around their central axes respectively, and rotating one of said scrolls causing the other of said scrolls to rotate in the same direction. CONSTITUTION:A driven scroll 600 consists of a spiral part 601, a seal end plate 602, and a discharge port 603, and is rotatably supported in a casing 700, via its central bearing 604. A rotary scroll 800 consisting of a spring part 801 and a seal end plate 802, is constructed in an integrated form with a driving shaft 803 and rotatably supported in the casing 700 via bearings 804, 805, and a bearing 806 which is subjected to a thrust load of the rotary scroll 800. Due to such a construction, the rotation of the driving shaft 803 constructed in an integrated form with the rotary scroll 800 causes both scrolls 800, 600 to rotate on their own axes, eliminating the need for incorporating a rotation- preventing revolution mechanism as in the case of conventional method, to carry out intake, compression, and discharge operations. As a result, the construction of the unit can be simplified, making the unit small.
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