Patent ID: 11920594
Assignee: XI'AN JIAOTONG UNIVERSITY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. A screw compressor with gas pulsation attenuation function, which comprises a compressor body (2), a male rotor (5) and a female rotor (6) both of which are provided within the compressor body (2) and engaged with each other, and a screw compressor slide valve (20) for controlling gas exhaust, wherein the screw compressor slide valve (20) comprises a valve body (26), the valve body (26) comprises multiple valve walls (21) located at a circumferential direction of the valve body (26) and used for forming seal with the compressor body (2), the male rotor (5) and the female rotor (6) of the screw compressor, respectively; on an exhaust side end surface of the valve body (26), there are two or more internal through holes (24) extending to a suction side end surface of the valve body (26), and each one of the two or more internal through holes (24) is connected with at least one of a rest of the two or more internal through holes (24);
two of the internal through holes (24) are connected with each other through a through hole connecting groove (25) which is provided at the suction side end surface of the valve body (26); the through hole connecting groove (25) and the two of the internal through holes (24) which are connected with each other through the through hole connecting groove (25) form a branched exhaust flow channel (32); a length of the exhaust flow channel (32) is an odd multiple of a ½ wavelength corresponding to a frequency of gas pulsation to be attenuated of the screw compressor.