| 摘要 |
PROBLEM TO BE SOLVED: To provide a scroll compressor capable of circulating a lubricant within a motor chamber without discharging outside, and enhancing its performance by decreasing the quantity of the lubricant to be fed, by partitioning a back pressure chamber at the back surface of a turning scroll into an intermediate pressure chamber an a low pressure chamber, providing a first introducing passage connecting a discharging chamber high in temperature, and high in pressure with the intermediate pressure chamber for introducing lubricant, and a second introducing passage introducing lubricant accumulated in the motor chamber to a suction port by means of a dynamic pressure effect caused by a refrigerant flow forwarded to a compression part. SOLUTION: An annular sealing area 14 is provided for the back surface of the end plate of a turning scroll 4, and meanwhile, let a motor chamber be faced to a main frame 8, and suction port 5a to be continuous to the outside of the sealing area is provided, a first introducing passage 15 introducing lubricant and/or gas high in temperature and pressure to a space partitioned out of the lubricant basin of a discharging chamber 12 by the sealing area and a bearing part is provided, and a second introducing passage 16 introducing lubricant accumulated in the motor chamber to the suction port by means of a dynamic pressure effect is provided.
|
