Oil supply structure of scroll compressor

Abstract

Disclosed herein is an oil supply structure of a scroll compressor capable of preventing a sludge clog phenomenon in a fine hole of an oil supply screw. The oil supply structure comprises a backpressure space defined between an orbiting scroll and a main frame of the compressor, a screw bore perforated through the main frame between the backpressure space and a space defined between a fixed scroll and the main frame, and the oil supply screw fastened in the screw bore and having a stepped screw body including upper and lower portions of different diameters. The upper and lower portions of the screw body are vertically perforated, through the center thereof, with a center hole and a fine hole, respectively, to form an orifice. An entrance end of the lower portion of the screw body is exposed to the backpressure space, thereby preventing the fine hole of the oil supply screw from being clogged with sludge.

Dependencies are inferred from the claim text.