| 摘要 |
PROBLEM TO BE SOLVED: To provide a scroll compressor capable of preventing delay in oil feed when starting and having high reliability. SOLUTION: Diameter d of an annular seal 11 dividing a back pressure chamber 12 provided on a rear face of a turn spiral part 5 into an inner side region 12a and an outer side region 12b is set to be 0.5 times diameter D of a turn mirror plate 5a to give positive thrust force to the turn spiral part 5 irrespective of large or small discharge pressure Pd acting on the inner side region 12a. Consequently, the turn spiral part 5 can be pressed against a fixed spiral part 4 by only back pressure of discharge pressure. Set pressure Pm in the outer side region 12b is reduced to a value close to suction pressure Ps, and a pressure adjusting mechanism 20 is speedily opened after start to supply lubricating oil from the outer side region 12b into a suction space 9 without causing delay in time. COPYRIGHT: (C)2005,JPO&NCIPI
|
