Compressor

Abstract

A compressor includes a compression chamber, a discharge chamber, a discharge port forming member and a discharge valve The compression chamber is formed in a cylinder block and in the compression chamber a refrigerant is compressed. The discharge chamber is formed in a cylinder housing which is fixed to the cylinder block. The refrigerant in the compression chamber is flowed into the discharge chamber. The discharge port interconnects the compression chamber and the discharge chamber. The discharge valve opens and closes the discharge port, and has a valve member and an arm member. The valve member faces to the discharge port for opening and closing the discharge port. The arm member urges the valve member toward the discharge port. The arm member and the valve member are integrally joined with each other.

1 . A compressor comprising: 
 a compression chamber in which a refrigerant is compressed, formed in a cylinder block;    a discharge chamber formed in a cylinder housing which is fixed to the cylinder block, the refrigerant in the compression chamber being flowed into the discharge chamber;    a discharge port which interconnects the compression chamber and the discharge chamber; and    a discharge valve for opening and closing the discharge port, the discharge valve comprising: 
 a valve member facing to the discharge port for opening and closing the discharge port; and  
 an arm member for urging the valve member toward the discharge port, wherein the arm member and the valve member are integrally joined with each other.  
   
   
   
       2 . The compressor according to  claim 1 , wherein the valve member of the discharge valve further comprises:. 
 a board portion having a larger diameter than the discharge port, the board portion being capable of contacting a surface of a member for forming the discharge port in a predetermined area when the discharge port is closed; and    a pillar-shaped protruding portion that extends from the board portion toward the discharge port, the protruding portion having a smaller diameter than the discharge port, the protruding portion and the board portion being integrally formed so as to be solid, thickness of the valve member being formed so as to be larger than that of the arm member.    
   
   
       3 . The compressor according to  claim 2 , wherein the board portion of the valve member has formed in a surface thereof which faces the discharge port forming member an annular groove concentric with the board portion.  
   
   
       4 . The compressor according to  claim 1 , wherein the valve member is cast in a resin material and the arm member is cast in metallic material which is different from the resin material, the valve member and the arm member being integrally joined with each other.  
   
   
       5 . The compressor according to  claim 1 , wherein a material of the arm member is a steel wire which has a predetermined rigidity.  
   
   
       6 . The compressor according to  claim 1 , further comprising a member that protrudes from a wall surface of the discharge chamber of the cylinder housing, a maximum lift amount of the discharge valve being regulated when a distal end of the protruding member contacts the valve member.