| 摘要 |
PROBLEM TO BE SOLVED: To restrict a reduction of pressure increasing performance of a scroll-type compressor for increasing pressure of fluid under a multistep manner.SOLUTION: An axial protruding amount HH of a spiral higher-stage movable tooth part 11b protruded from a movable base plate part 11a of a movable scroll 11 toward axial one end is set to be smaller than an axial protruding amount HL of a spiral lower-stage movable tooth part 11b protruded toward axial one end in order to cause COP of an applied gas injection cycle to approach to its maximal value. Further, a thickness size TL in a radial direction of the lower-stage movable tooth part 11b is set to be smaller than a thickness TH in a radial direction of a higher-stage movable tooth 11c, thereby a lower-stage side weight WL of the movable scroll 11 and a higher-stage side weight WH are set to the same value to each other. With this arrangement, a center of gravity of the entire movable scroll 11 is positioned at a substantial central part of the movable side base plate part 11a to restrict inclination of the movable scroll 11. |
