| 摘要 |
PROBLEM TO BE SOLVED: To increase the strength of a lap tip part of a scroll compressor and to reduce power loss caused by excessive compression. SOLUTION: A fixed scroll 10 and a movable scroll 20 with spiral laps 13, 23 erected on the inner surfaces of end plates 11, 21 respectively are joined to form compression chambers P1, P2 variable in volume between both laps. A scroll start point A of each outer peripheral surface 13a separates from an inner peripheral surface when going over a scroll start point C which is near a seal off position of each inner peripheral surface 13b, and both compression chambers communicate with a center chamber P3. Each lap is formed large in the thickness of a center side tip part, and the inner surface abutting on the center chamber of at least one end plate is formed with counter boring parts 15, 25 communicating the center chamber with at least one of both compression chambers P1, P2 when the scroll start point on the outer peripheral surface goes over a part near the scroll start point on the inner peripheral surface. COPYRIGHT: (C)2006,JPO&NCIPI |
