Compressor

Abstract

The present invention relates to a compressor, which has ribs for directly supporting a part of a valve plate in a suction chamber of a housing, thereby preventing a noise caused by vibration of the valve plate during the strike of a suction reed valve.

1 . A compressor which comprises: front and rear housings; a cylinder block mounted between the front and rear housings and having a plurality of cylinder bores; a plurality of pistons mounted inside the cylinder bores and performing a reciprocating motion while cooperating with a rotating motion of a swash plate rotating together with a driving shaft; and a valve unit mounted between one of the front and rear housings, which has a suction chamber and a discharge chamber, and the cylinder block, the valve unit having a suction reed valve and a discharge reed valve mounted at both sides of a valve plate, 
 wherein the suction chamber has support means for directly supporting a part of the valve plate at a position corresponding to each reed of the suction reed valve to prevent a noise caused by vibration of the valve plate during the strike of the suction reed valve.    
   
   
       2 . A compressor according to  claim 1 , wherein the support means is formed by extending a rib at a side of the inner wall surface of the suction chamber.  
   
   
       3 . A compressor according to  claim 2 , wherein the rib is formed in pair at positions corresponding to both sides of the upper end portion of each reed.  
   
   
       4 . A compressor according to  claim 3 , wherein an angle θ formed by central lines of a pair of the ribs satisfies the following formula, 80°≦θ≦100°.  
   
   
       5 . A compressor according to  claim 2 , wherein the ribs extend toward the center of the refrigerant suction hole formed on the valve plate.  
   
   
       6 . A compressor according to  claim 5 , wherein when a thickness of the rib is t and a diameter of the refrigerant suction hole is D, a formula t/D satisfies the following formula,  
     
       
         
           
             0.36 
             ≤ 
             
               t 
               D 
             
             ≤ 
             
               0.40 
               . 
             
           
         
       
     
   
   
       7 . A compressor according to  claim 5 , wherein when the shortest distance from the center of the refrigerant suction hole to the rib is L and a diameter of the refrigerant suction hole is D, a formula L/D satisfies the following formula,  
     
       
         
           
             0.44 
             ≤ 
             
               L 
               D 
             
             ≤ 
             
               0.51 
               .