Internal oil separator for compressors of refrigeration systems

Abstract

An internal oil separator for compressors of refrigeration systems is disclosed. This oil separator supplies an effective quantity of lubrication oil to the drive parts of a compressor, and protects the compressor from being unexpectedly damaged or locked. The oil separator accomplishes the recent trend of compactness of compressors, and prevents a bypass flow of the compressed refrigerant into the compressor. This oil separator collaterally reduces operational noises of the compressor. In this oil separator, an oil-separating chamber,having a generally U-shaped passage, is defined in the rear section of a compressor housing by a cover,The oil-separating chamber,has a guide wall,thus forming a desired U-shaped passage therein. Refrigerant inlet and outlet ports,are formed on the rear wall of the housing. An oil-collecting part,is formed on the bottom of the oil-separating chamber,and stores recovered oil therein. This oil-collecting part,communicates with an oil return line,through an oil return channel,of a gasket,and so the recovered oil returns to the driving part chamber,of the compressor. The above gasket,is interposed between the housing,and the cover,thus accomplishing a desired sealing effect. An oil-separating plate,and/or a screen member,formed by single loop structure is preferably set within the oil-separating chamber