Patent ID: 8192187
Filing Date: 2012-06-05
Classification: F01C,F04C

Abstract:
1. A compressor comprising: a disc-shaped screw rotor arranged to rotate about a center axis, the screw rotor having a plurality of spirally extending groove portions disposed radially outwardly from the center axis of the screw rotor, with the groove portions being formed in at least one end face of the screw rotor facing a direction parallel to the center axis of the screw rotor; and a gate rotor arranged to rotate about a center axis and which has a plurality of tooth portions circumferentially arranged on an outer circumference of the gate rotor, with the groove portions of the screw rotor and the tooth portions of the gate rotor being engaged with each other to form a compression chamber, the screw rotor and the gate rotor being configured and arranged such that