Valve plate for a compressor

Abstract

A valve plate for a compressor, a compressor, and a method of thermal insulation applied in a compressor. The valve plate has a thermally insulating capability for thermally insulating a suction muffler of the compressor from a discharge plenum in a cylinder head of the compressor.

1 . A valve plate for a compressor, the valve plate having a thermally insulating capability for thermally insulating a suction muffler of the compressor from a discharge plenum in a cylinder head of the compressor. 
     
     
         2 . The valve plate as claimed in  claim 1 , comprising a first plate element made from thermally insulating material and a second plate element made from metal. 
     
     
         3 . The valve plate as claimed in  claim 2 , wherein the first and second plate elements are joint by one or more of a group consisting of press-fitting, injection molding, induction heating, bonding adhesive, and ultrasonic welding. 
     
     
         4 . The valve plate as claimed in  claim 2 ; wherein the first plate element is disposed to face the discharge plenum. 
     
     
         5 . The valve plate as claimed in  claim 2 , further comprising a third plate element made from metal, and the first plate element is sandwiched between the first and second plate elements. 
     
     
         6 . The valve plate as claimed in  claim 5 , wherein the first, second and third plate elements are joint by one or more of a group consisting of press-fitting, injection molding, induction heating, bonding adhesive, and ultrasonic welding. 
     
     
         7 . The valve plate as claimed in  claim 2 , wherein the first plate element is configured to be received in a recess formed in the second plate element. 
     
     
         8 . The valve plate as claimed in  claim 7 , wherein the recess is formed around a suction orifice in the second plate element. 
     
     
         9 . The valve plate as claimed in  claim 2 , wherein the second plate element comprises a raised portion around a discharge orifice in the second plate element, and the first plate element comprises an opening for receiving the raised portion. 
     
     
         10 . The valve plate as claimed in  claim 1 , comprising a first plate element made from thermally insulating material and a metal coating on one or both sides of the first plate. 
     
     
         11 . A compressor comprising a valve plate as claimed in  claim 1 . 
     
     
         12 . A method of thermal insulation applied in a compressor, comprising using a valve plate having a thermally insulating capability for thermally insulating a suction muffler of the compressor from a discharge plenum in a cylinder head of the compressor.