Patent ID: 6953490

Claim:
An oil separator for use in a compressor for separating oil from refrigerant, comprising: a screw compressor including a housing, intermeshing rotors, a refrigerant inlet, a refrigerant discharge, and a discharge housing connected to a discharge line; said discharge line having an inner surface; a substantially circular wall structure in said discharge line forming an inlet and an outlet within said discharge line, wherein said inlet has a narrower diameter than said outlet; means for preventing oil from exiting said outlet, said means for preventing comprising the shape of said wall and the relative orientation of said wall to said discharge line, wherein said relative orientation comprises said discharge line having a flow direction with a horizontal component of orientation and said wall having a vertical component of orientation relative said horizontal component, and wherein said shape comprises said wall forming a circular periphery and having a curvilinear surface; and means for directing said oil out of said discharge line.