| 摘要 |
<p>In a single-screw compressor, gates (51) of a gate rotor (50) are meshed with spiral grooves (41) of a screw rotor (40). In each spiral groove (41) of the screw rotor (40), an area from the start end thereof to a certain point in the compression phase serves as a suction side portion (45), with the remaining portion (the portion to the terminal end thereof) serving as a discharge side portion (46). In the suction side portion (45), the clearance between a wall surface (42,43,44) and the gate (51) is substantially zero. The clearance between the wall surface (42,43,44) of the discharge side portion (46) and the gate (51) is larger than the clearance between the wall surface (42,43,44) of the suction side portion (45) and the gate (51), and gradually increases toward the terminal end of the spiral groove (41).</p> |
