Hermetic Compressor

Abstract

A hermetic compressor that has a pedestal of the valve plate to which a discharge reed equipped with an opening/closing part and discharge reed holding part, a spring reed equipped with a movable part and spring reed holding part, and a stopper equipped with a regulation part and stopper holding part, are fixed in this sequence, and also has a discharge valve device in which the spring reed is shaped in a substantially crank-like form is provided. A space is formed between the movable part of the spring reed and the opening/closing part of the discharge reed, and both are not adsorbed each other, thus preventing a delay in closing of the discharge reed. This makeup suppresses a decrease in freezing capacity of a fridge-freezer device and the like, thus implementing higher efficiency.

1 . A hermetic compressor comprising:
 a compression mechanism;   an electromotive element for rotarily driving the compression mechanism; and   
       a hermetic container for housing the compression mechanism and the electromotive element, and also for storing oil, wherein the compression mechanism includes:
 a piston; 
 a cylinder in which the piston reciprocably moves; and 
 
       a valve plate that seals an open end of the cylinder and also has a discharge valve device on a side opposite to the cylinder, wherein the discharge valve device has the valve plate formed with:
 a discharge hole communicating with an inside of the cylinder; 
 a valve sheet provided outside the discharge hole; and 
 a pedestal formed on a substantially same plane as the valve sheet, wherein the pedestal has: 
 a discharge reed made of a leaf-spring member, having an opening/closing part for opening and closing the discharge hole, and a discharge reed holding part fixed to the pedestal; 
 a spring reed made of a leaf-spring member, having a movable part, and a spring reed holding part fixed to the pedestal; and 
 a stopper having a regulation part and a stopper holding part fixed to the pedestal, each fixed in this sequence, and wherein a side of the spring reed is shaped in a substantially crank-like form, and clearance is formed between the spring reed, and both the discharge reed and the stopper, at a position corresponding to the discharge reed opening/closing part. 
 
     
     
         2 . A hermetic compressor as claimed in  claim 1 , wherein the discharge reed is bent at a bending part of the discharge reed close to the opening/closing part, to a side of the valve sheet. 
     
     
         3 . A hermetic compressor as claimed in  claim 2 , wherein the discharge reed bending part is positioned at an undercut part formed between the valve sheet and the pedestal. 
     
     
         4 . A hermetic compressor as claimed in  claim 1 , wherein a regulation part of the stopper is formed with a touch part that is bent and formed on a position close to the spring reed. 
     
     
         5 . A hermetic compressor as claimed in  claim 2 , wherein a regulation part of the stopper is formed with a touch part that is bent and formed on a position close to the spring reed. 
     
     
         6 . A hermetic compressor as claimed in  claim 3 , wherein a regulation part of the stopper is formed with a touch part that is bent and formed on a position close to the spring reed.