Oil supply structure of scroll compressor

Details Oil supply structure of scroll compressor Oil supply structure of scroll compressor

2008-01-15

2008-01-15

Denion, Thomas (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S055600, C418S055100

Reexamination Certificate

active

07318711

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.

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