Patent ID: 11953006
Assignee: YORK (WUXI) AIR CONDITIONING AND REFRIGERATION CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A screw compressor comprising:
a screw rotor comprising a suction head end and an exhaust tail end, wherein the screw rotor is configured to suck in gas from the suction head end and discharge compressed gas from the exhaust tail end; and
a spool valve comprising a working side for sealing a compression chamber of the screw rotor, wherein the working side comprises a spool valve head end and a spool valve tail end, the spool valve head end and the spool valve tail end are arranged in a common direction as the suction head end and the exhaust tail end of the screw rotor along an axis direction of the screw rotor, and the spool valve is configured for reciprocating motion along the axis direction of the screw rotor;
wherein the spool valve is configured to move to a suction capacity adjusting position, wherein, in the suction capacity adjusting position, the spool valve head end is located at an inner side of the suction head end of the screw rotor, and a suction capacity adjusting distance is formed between the spool valve head end and the suction head end, wherein the suction capacity adjusting distance is adjustable to adjust a suction capacity of the screw compressor without changing a speed of the screw rotor.