Sealing mechanism for compressor

Abstract

A sealing mechanism is used for a compressor. The compressor has a housing, a valve plate assembly located in the housing. The housing has a cylinder block and a cylinder head. The cylinder block and the cylinder head are connected with each other. The valve plate assembly has a plurality of plates. The sealing mechanism has a seal portion. The seal portion is a peripheral portion of one of the plates that extends radially outward in the compressor relative to the other plates. The seal portion seals a peripheral section between the cylinder block and the cylinder head. This provides an inexpensive and simple sealing mechanism of the compressor.

1 . A sealing mechanism for a compressor, wherein the compressor has a housing, a valve plate assembly located in the housing, wherein the housing has a cylinder block and a cylinder head, wherein the cylinder block and the cylinder head are connected with each other, wherein the valve plate assembly has a plurality of plates, the sealing mechanism comprising: 
 a seal portion, wherein the seal portion is a peripheral portion of one of the plates that extends radially outward in the compressor relative to the other plates, and wherein the seal portion seals a peripheral section between the cylinder block and the cylinder head.    
     
     
         2 . The sealing mechanism according to  claim 1 , wherein the cylinder block has a cylinder bore, wherein the valve plate assembly has a first plate, a main plate, and a second plate, wherein the first plate has a suction valve flap, which is opened when gas is drawn in the cylinder bore, wherein the main plate has a suction port and a discharge port to permit the gas to pass there through, and wherein the second plate has a discharge valve flap, which is opened when the gas is discharged from the cylinder bore.  
     
     
         3 . The sealing mechanism according to  claim 2 , wherein the valve plate assembly has a retainer plate, which restricts the opening of the discharge valve flap.  
     
     
         4 . The sealing mechanism according to  claim 2 , wherein the seal portion is located in one of the first plate and the second plate.  
     
     
         5 . The sealing mechanism according to  claim 3 , wherein the seal portion is located in the retainer plate.  
     
     
         6 . The sealing mechanism according to  claim 1 , wherein the seal portion is formed by coating at least part of the peripheral surface of one of the plates with seal material.  
     
     
         7 . The sealing mechanism according to  claim 6 , wherein the seal material is coated substantially on the entire surface of the one of the plates.  
     
     
         8 . The sealing mechanism according to  claim 1 , wherein the compressor is double-headed piston type compressor.  
     
     
         9 . A compressor comprising: 
 a cylinder block;    a cylinder head connected to the cylinder block; and    a valve plate assembly located between the cylinder block and the cylinder head, wherein the valve plate assembly has a plurality of plates, wherein a peripheral portion of one of the plates that extends radially outward in the compressor relative to the other plates is a seal portion, and wherein the seal portion seals a peripheral section between the cylinder block and the cylinder head.    
     
     
         10 . The compressor according to  claim 9 , wherein the cylinder block has a cylinder bore, wherein the valve plate assembly has a first plate, a main plate, and a second plate, wherein the first plate has a suction valve flap, which is opened when gas is drawn in the cylinder bore, wherein the main plate has a suction port and a discharge port to permit the gas to pass there through, and wherein the second plate has a discharge valve flap, which is opened when the gas is discharged from the cylinder bore.  
     
     
         11 . The compressor according to  claim 10 , wherein the valve plate assembly has a retainer plate, which restricts the opening of the discharge valve flap.  
     
     
         12 . The compressor according to  claim 10 , wherein the seal portion is located in one of the first plate and the second plate.  
     
     
         13 . The compressor according to  claim 11 , wherein the seal portion is located in the retainer plate.  
     
     
         14 . The compressor according to  claim 9 , wherein the seal portion is formed by coating at least part of the peripheral surface of one of the plates with seal material.  
     
     
         15 . The compressor according to  claim 14 , wherein the seal material is coated substantially on the entire surface of the one of the plates.  
     
     
         16 . The compressor according to  claim 9 , wherein the compressor is double-headed piston type compressor.