Patent ID: 8226388

Claim:
A screw compressor adapted to be cooled by a coolant when a gaseous matter is compressed by the screw compressor and adapted to be mounted on a base, comprising, a compressor body including a pair of a male rotor and a female rotor, a motor including a stator and a motor rotor connected to one of the male and female rotors to be rotationally driven, a pair of first and second bearings arranged to support in a rotatable manner the one of the male and female rotors at respective sides of the one of the male and female rotors opposite to each other along a rotational axis of the one of the male and female rotors, a coolant separator container for gathering the coolant from a mixture of the gaseous matter and coolant to restrain the coolant from proceeding with the compressed gaseous matter after the mixture of the gaseous matter and coolant is discharged from the pair of male and female rotors, and a connection adapted to be provided between the coolant separator container and the base so that the motor is supported through the coolant separator container, wherein the connection between the coolant separator container and the base comprises a leg part of the coolant separator container connected to a plurality of rails, the plurality of rails extending beyond the coolant separator container toward a position under the electric motor, wherein a rotational axis of the motor rotor and the rotational axis of the one of the male and female rotors are coaxial with respect to each other, the motor rotor has a first end part through which the motor rotor is connected to the one of the male and female rotors, a motor rotor body adapted to cooperate with the stator to generate a force for driving the one of the male and female rotors, and a second end part opposite to the first end part through the motor rotor body along the rotational axis of the one of the male and female rotors, and the second end part is prevented from bearing or receiving a force applied from an outside of the motor rotor to the motor rotor to support the motor rotor, wherein the coolant separator container extends in such a manner that the gathered coolant is contained at a region of the coolant separator container overlapping at least a part of the pair of male and female rotors as seen in an observing direction perpendicular to the rotational axis, wherein a center of gravity of the screw compressor is arranged on an axial side of a central position of the coolant separator container on which the motor is arranged, and wherein the compressor body, the motor and the coolant separator container form one of a reversed L-shape and a T-shape.