Rotary sliding-vane compressor

Abstract

A rotary sliding-vane compressor includes an air cylinder, a shaft eccentrically mounted in the air cylinder and rotatable by a motor, sliding vanes coupled to and movable back and forth along radially extending sliding grooves of the shaft, and an oil-gas separating device mounted in the air output port of the air cylinder. The shaft has an axial hole located on one end thereof and coupled to the output shaft of the motor, and two axle bushes respectively mounted on the two opposite ends. Each sliding vane comprises a metal substrate having evenly distributed through holes, and a covering material molded on the surface of the metal substrate and filled up the through holes and having a plurality of discharge grooves.

1 . A rotary sliding-vane compressor, comprising an air cylinder, a cylinder shaft eccentrically mounted in said air cylinder, said cylinder shaft comprising a plurality of radially extending sliding grooves, a plurality of sliding vanes coupled to and movable back and forth along said sliding grooves, and a motor having an output shaft adapted for rotating said shaft wherein:
 said cylinder shaft comprises a first end, a second end opposite to said first end, an axial hole located on said first end and coupled to said output shaft of said motor for enabling said cylinder shaft to be rotated synchronously with said output shaft of said motor, two axle bushes respectively mounted on said first end and said second end;   each said sliding vane comprises a metal substrate having evenly distributed through holes, and a covering material molded on the surface of said metal substrate and filled up said through holes, said covering material having a plurality of discharge grooves located on at least one of two opposite sides thereof.   
     
     
         2 . The rotary sliding-vane compressor as claimed in  claim 1 , wherein said air cylinder comprises a front cap and a rear cap respectively located on two opposite ends thereof; said cylinder shaft has the first end and second end thereof respectively pivotally connected to said front cap and said rear cap. 
     
     
         3 . The rotary sliding-vane compressor as claimed in  claim 1 , wherein said cylinder shaft further comprises a keyway disposed inside said axial hole and coupled to a part of said output shaft of said motor to prohibit rotation of said cylinder shaft relative to said output shaft of said motor. 
     
     
         4 . The rotary sliding-vane compressor as claimed in  claim 1 , wherein the covering material of each said sliding vane is a compound plastic material molded on the associated metal substrate by insert molding. 
     
     
         5 . The rotary sliding-vane compressor as claimed in  claim 1 , wherein said air cylinder comprises an air output port and an oil-gas separating device mounted in said air output port. 
     
     
         6 . The rotary sliding-vane compressor as claimed in  claim 5 , wherein said oil-gas separating device comprises a housing having an air inlet and an air outlet; an air filter element mounted in said housing and connected between said air inlet and said air outlet of said housing; a partition board mounted in said housing to divide the internal space of said housing into a flow-guide chamber and a filter chamber, and an annular baffle plate, a guide tube and an oil drain hole mounted in said flow-guide chamber, said filter chamber accommodating said air filter element, said annular baffle plate having one end thereof tightly connected with said partition board and an opposite end thereof spaced from said housing at a distance so that an annular gas passage is defined between said annular baffle plate and said housing, said guide tube being connected between said air inlet and said annular gas passage, said partition board having an air vent disposed in the inside of said annular baffle plate in communication with the inside space of said air filter element.