Scroll compressor having a throttle pin moving in the longitudinal hole of the oil supply passage

摘要

A scroll compressor supplies an optimum quantity of lubricating oil to a refrigerant compressing section and restrains a decrease in compression efficiency caused by gas leakage. An oil supply passage ( 35 ) whose discharge port is open to a joint surface of a main frame ( 3 ) and a fixed scroll ( 4 ) is provided, and a throttle pin ( 353 ) is inserted in the oil supply passage ( 35 ) with a predetermined clearance to regulate the inflow quantity of lubricating oil ( 0 ). Also, a groove-shaped connecting portion is formed in the joint surface on the main frame side to connect the discharge port to a compression chamber ( 43 ).