Patent ID: 6851940

Claim:
A gas compressor comprising: a suction port for intaking a gas; a suction chamber communicating with the suction port; a gas compressing portion communicating with the suction chamber for compressing the gas and discharging compressed gas, the gas compressing portion comprising a cylinder, side blocks disposed at respective axial opposite ends of the cylinder, a rotor rotatably disposed in the cylinder, and vanes slidably disposed in radial grooves provided in the rotor; a compressed gas releasing hole communicating with a discharge passage in one of the side blocks for releasing the compressed gas from the gas compressing portion; a discharge chamber communicating with the compressed gas releasing hole; a discharge port communicating with the discharge chamber for discharging the compressed gas from the discharge chamber; a cylindrical body disposed in the discharge chamber so as to surround the compressed gas releasing hole to define an inner space in the discharge chamber; a filter arranged to cover an opening of the cylindrical body; an oil sump provided in a lower portion of the discharge chamber; and an oil intake port for supplying oil accumulated in the oil sump to the interior of the gas compressing portion, the oil intake port being situated outside the cylindrical body.