Patent ID: 6506039
Filing Date: 2003-01-14
Classification: F04C,Y10S

Abstract:
A screw compressor comprising:a pair of male and female screw rotors which mesh with each other; a bearing for supporting said rotors; a motor for driving said rotors; a casing for housing the rotors, the bearing and the motor; a discharge passage through which refrigerant gas compressed by said screw rotors is discharged; an oil separating space section communicated with said discharge passage; an oil reservoir for storing oil separated in said oil separating space section; and a discharge port provided so as to communicate with said oil separating space section for discharging the gas from which the oil is separated in said oil separating space section, wherein said oil separating space section is of a cylindrical shape, said discharge passage being connected to the cylindrical oil separating space section substantially in the tangential direction, and the lower part of said oil separating space section is connected to said oil reservoir thorough a communication passage having a passage area smaller than the cross-sectional area of said oil separating space section.