Screw compressor with muffle structure and rotor seat thereof

Abstract

A rotor seat for a screw compressor with a muffle structure is provided. The rotor seat includes a seat body, a radial exhaust port arranged at the seat, a female rotor hole and a male rotor hole. The rotor seat further includes a plurality of axial blind holes arranged on a surface where the radial exhaust port is located.

What is claimed is: 
     
         1 . A rotor seat for a screw compressor with a muffle structure, the rotor seat comprising:
 a seat body;   a radial exhaust port arranged at the seat body;   a female rotor hole and a male rotor hole; and   a plurality of axial blind holes arranged on an arc surface where the radial exhaust port is located.   
     
     
         2 . The rotor seat according to  claim 1 , wherein the axis of a blind hole of the plurality of blind holes is the normal line, at the blind hole, of the arc surface where the radial exhaust port is located. 
     
     
         3 . The rotor seat according to  claim 2 , wherein the depths of the plurality of blind holes are in the range of ¼λ±15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         4 . The rotor seat according to  claim 2 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         5 . The rotor seat according to  claim 1 , wherein the depths of the plurality of blind holes are in the range of ¼λ±15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         6 . The rotor seat according to  claim 5 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         7 . The rotor seat according to  claim 1 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         8 . The rotor seat according to  claim 7 , wherein the depths of the plurality of blind holes are in the range of ¼λ±15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         9 . The rotor seat according to  claim 1 , wherein the plurality of blind holes are distributed in one of a uniform or non-uniform manner on the arc surface where the radial exhaust port is located. 
     
     
         10 . The rotor seat according to  claim 1 , wherein the plurality of the blind holes is at least two blind holes. 
     
     
         11 . A screw compressor with a muffle structure, the screw compressor comprising:
 a suction port;   an exhaust port;   an operation cavity in communication with the suction port and the exhaust port;   female and male rotors arranged inside the operation cavity; and   a rotor seat to receive the female and male rotors, the rotor seat comprising:
 a seat body; 
 a radial exhaust port arranged at the seat body; 
 a female rotor hole and a male rotor hole; and 
 a plurality of axial blind holes arranged on a surface where the radial exhaust port is located. 
   
     
     
         12 . The screw compressor according to  claim 11 , wherein the axis of a blind hole of the plurality of blind holes is the normal line, at the blind hole, of the surface where the radial exhaust port is located. 
     
     
         13 . The screw compressor according to  claim 12 , wherein the depths of the plurality of blind holes are in the range of ¼λ±15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         14 . The screw compressor according to  claim 12 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         15 . The screw compressor according to  claim 11 , wherein the depths of the plurality of blind holes are in the range of ¼λ±15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         16 . The screw compressor according to  claim 15 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         17 . The screw compressor according to  claim 11 , wherein the diameters D of the plurality of blind holes are less than or equal to 0.586×c/f, where f is an interested sound frequency, and c is a sound speed in a medium. 
     
     
         18 . The screw compressor according to  claim 17 , wherein the depths of the plurality of blind holes are in the range of ¼λ×15% of an interested sound frequency or an odd multiple of ¼λ±15% of the interested sound frequency, and λ is a wavelength of the interested sound frequency. 
     
     
         19 . The screw compressor according to  claim 11 , wherein the plurality of blind holes are distributed in one of a uniform or non-uniform manner on the surface where the radial exhaust port is located. 
     
     
         20 . The screw compressor according to  claim 11 , wherein the plurality of the blind holes is at least two blind holes.