Discharge valve mechanism in compressor

Abstract

A discharge valve mechanism in a compressor for compressing refrigerant gas includes a valve plate and a discharge valve plate. The valve plate forms a discharge port into which the compressed refrigerant gas is discharged. The discharge valve plate is located between the valve plate and a rear housing and includes a support portion, a connecting portion and a discharge valve. The support portion is sandwiched between the valve plate and the end surface of the rear housing. The connecting portion is bendably cantilevered from the support portion. The connecting portion extends to an opposite side of the discharge port so as to bypass the discharge port from the support portion. The connecting portion has a free end portion. The discharge valve extends from the free end portion to the discharge port toward the support portion for opening and closing the discharge port.

1 . A discharge valve mechanism in a compressor that includes a rear housing having an end surface for compressing refrigerant gas, comprising: 
 a valve plate forming a discharge port into which the compressed refrigerant gas is discharged; and    a discharge valve plate located between the valve plate and the rear housing, the discharge valve plate including: 
 a support portion sandwiched between the valve plate and the end surface of the rear housing;  
 a connecting portion bendably cantilevered from the support portion, the connecting portion extending to an opposite side of the discharge port so as to bypass the discharge port from the support portion, the connecting portion having a free end portion; and  
 a discharge valve extending from the free end portion to the discharge port toward the support portion for opening and closing the discharge port.  
   
   
   
       2 . The discharge valve mechanism according to  claim 1 , wherein the connecting portion includes: 
 a neck portion formed so as to be constricted from the support portion; and    a pair of arm portions protruding from the neck portion at a distance from each other, each of the arm portions having an end, wherein the free end portion connects the ends of the arm portions.    
   
   
       3 . The discharge valve mechanism according to  claim 2 , wherein the support portion has an annular shape and an outer periphery, the neck portion being connected to the outer periphery of the support portion.  
   
   
       4 . The discharge valve mechanism according to  claim 2 , wherein the support portion has an annular shape and an inner periphery, the neck portion being connected to the inner periphery of the support portion.  
   
   
       5 . The discharge valve mechanism according to  claim 1 , wherein the connecting portion includes a pair of arm portions protruding from the support portion at a distance from each other, each of the arm portions having an end, wherein the free end portion connects the ends of the arm portions.  
   
   
       6 . The discharge valve mechanism according to  claim 1 , wherein the connecting portion includes: 
 a neck portion formed so as to be constricted from the support portion; and    a pair of arm portions protruding from the neck portion at a distance from each other, each of the arm portions having an end, wherein the free end portion is provided at each of the ends of the arm portions.    
   
   
       7 . The discharge valve mechanism according to  claim 1 , wherein the connecting portion includes: 
 a neck portion connected to the support portion; and    a pair of arm portions protruding from the neck portion at a distance from each other, each of the arm portions having an end, wherein the free end portion connects the ends of the arm portions.    
   
   
       8 . The discharge valve mechanism according to  claim 1 , wherein the compressor is used for an air-conditioner.  
   
   
       9 . The discharge valve mechanism according to  claim 1 , further comprising a retainer having a root portion for restricting bend of the discharge valve, wherein bend of the connecting portion is restricted by the root portion.  
   
   
       10 . The discharge valve mechanism according to  claim 1 , wherein the discharge valve bends about the free end portion, the connecting portion bending about the support portion.