Compressor

Abstract

A compressor includes a check valve holder and a bypass valve holder, a first through-hole in a fixed scroll, a discharge buffer chamber enclosed by the floating seal plate and the fixed scroll, and a check valve in the discharge buffer chamber. A bypass passage is formed in the fixed scroll, the discharge buffer chamber is in communication with the bypass passages, and bypass valves are disposed in the bypass passages and are movable with respect to the bypass valve holder between a third position and a fourth position; the bypass valves open the bypass passages when the bypass valves are in the third position, and the bypass valves close the bypass passages when the bypass valves are in the fourth position.

What is claimed is: 
     
         1 . A compressor, characterized by comprising a floating seal plate, an orbiting scroll and a fixed scroll; the compressor further comprises at least one of a check valve assembly and a bypass valve assembly; the check valve assembly comprises a check valve and a check valve holder, the bypass valve assembly comprises bypass valves and a bypass valve holder, and at least one of the check valve holder and the bypass valve holder is fixedly connected to the floating seal plate; a first through-hole is formed in the fixed scroll, a discharge buffer chamber is enclosed by the floating seal plate and the fixed scroll, and the check valve is disposed in the discharge buffer chamber and is movable between a first position and a second position; the check valve is separated from a thrust surface of the check valve holder and closes the first through-hole when the check valve is in the first position, and the check valve is in abutment with the thrust surface of the check valve holder and is separated from the first through-hole when the check valve is in the second position; bypass passages are formed in the fixed scroll, the discharge buffer chamber is in communication with the bypass passages, and the bypass valves are disposed in the bypass passages and are movable with respect to the bypass valve holder between a third position and a fourth position; the bypass valves open the bypass passages when the bypass valves are in the third position, and the bypass valves close the bypass passages when the bypass valves are in the fourth position. 
     
     
         2 . The compressor according to  claim 1 , characterized in that a second through-hole which is in communication with the discharge buffer chamber is formed in the check valve holder. 
     
     
         3 . The compressor according to  claim 1 , characterized in that third through-holes which are located on the side of the check valve holder are further formed in the floating seal plate. 
     
     
         4 . The compressor according to  claim 3 , characterized in that the second through-hole is in communication with the third through-holes in the case that the second through-hole is formed in the check valve holder and the third through-holes are further formed in the floating seal plate. 
     
     
         5 . The compressor according to  claim 1 , characterized in that the fixed scroll is further provided with a check valve base, in which check valve base a fourth through-hole which is in communication with the first through-hole is formed. 
     
     
         6 . The compressor according to  claim 1 , characterized in that the bypass valves are piston valves, the bypass valve holder comprises bypass valve guide chambers, first ends of the piston valves are inserted into the bypass valve guide chambers, and second ends of the piston valves are located in the bypass passages and are movable between the third position and the fourth position. 
     
     
         7 . The compressor according to  claim 6 , characterized in that the bypass valve holder is further provided with elastic elements, and the first ends of the piston valves pass through the elastic elements to connect to the bypass valve guide chambers. 
     
     
         8 . The compressor according to  claim 1 , characterized in that the bypass valves are disc valves, the disc valves are in abutment with the bypass valve holder and open the bypass passages when the disc valves are in the third position, and the disc valves are separated from the bypass valve holder and close the bypass passages when the disc valves are in the fourth position. 
     
     
         9 . The compressor according to  claim 8 , characterized in that the bypass valve holder is provided with protrusions, the disc valves are in abutment with the bypass valve holder or the protrusions when the disc valves are in the third position, and the disc valves are separated from both of the bypass valve holder and the protrusions when the disc valves are in the fourth position. 
     
     
         10 . The compressor according to  claim 8 , characterized in that the floating seal plate is further provided with a positioning element for aligning the floating seal plate with the fixed scroll, and the fixed scroll is further provided with a positioning portion for aligning the fixed scroll with the floating seal plate.