Patent ID: 6237362
Filing Date: 2001-05-29
Classification: F04B,F25B

Abstract:
An internal oil separator for compressors of refrigeration systems, comprising:an oil-separating chamber having a generally U-shaped refrigerant flowing passage and being formed in a rear section of a compressor housing while being closed by an oil separator cover mounted to a rear wall of said compressor housing, with refrigerant suction and discharge ports being formed abreast on a top end of said compressor housing, said suction port being used for introducing gas refrigerant from an evaporator into a compressor and said discharge port being used for discharging compressed gas refrigerant from the compressor into a condenser;a refrigerant inlet port formed on the rear wall of said compressor housing and used for introducing compressed and oil-laden gas refrigerant into said oil-separating chamber;a refrigerant outlet port formed on the rear wall of said compressor housing and used for discharging compressed gas refrigerant, separated from oil, from said oil-separating chamber into said refrigerant discharge port;an oil-collecting part formed on a bottom of said oil-separating chamber by partially depressing the bottom of said oil-separating chamber, said oil-collecting part being used for storing oil separated and recovered from the oil-laden refrigerant flowing within the oil-separating chamber;an oil return line extending from an upper portion of said rear wall of the compressor housing and used for returning the recovered oil from the oil-collecting part into the refrigerant suction port; anda gasket tightly interposed between the compressor housing and the oil separator cover so as to seal a junction between the housing and the cover, with an oil return passage being formed on said gasket by cutting the gasket at a predetermined position, said oil return passage connecting the oil-collecting part to the oil return line.