Valve assembly for hermetic compressor

Abstract

A valve assembly for a hermetic compressor in accordance with the present invention includes a cylinder head installed to an opened end of a cylinder having a specific space filled with a fluid and having a suction hole and a discharge hole, a suction valve fixed to a certain surface of the cylinder head and opening/closing the suction hole, a discharge valve fixed to the other surface of the cylinder head and opening/closing the discharge hole and a head cover fixed to the surface of the cylinder head and having a suction space at which a fluid is sucked and a discharge space at which a fluid is discharged.

1 . A valve assembly for a hermetic compressor, comprising: 
 a cylinder head installed to an opened end of a cylinder having a specific space filled with a fluid and having a suction hole and a discharge hole;    a suction valve fixed to a certain surface of the cylinder head and opening/closing the suction hole;    a discharge valve fixed to the other surface of the cylinder head and opening/closing the discharge hole; and    a head cover fixed to the surface of the cylinder head and having a suction space at which a fluid is sucked and a discharge space at which a fluid is discharged.    
     
     
         2 . The assembly for the hermetic compressor according to  claim 1 , further comprising: 
 a gasket placed between the cylinder head and the head cover and preventing a leakage of the fluid.    
     
     
         3 . The assembly for the hermetic compressor according to  claim 1 , wherein the cylinder head is formed as a plate shape having a certain thickness endurable a pressure of the fluid pressurized inside the cylinder.  
     
     
         4 . The assembly for the hermetic compressor according to  claim 1 , wherein the suction valve includes: 
 a fixation portion fixed to the surface of the cylinder head;    an opening/closing portion contacted to the suction hole, opening/closing the suction hole and having a diameter larger than a diameter of the suction hole; and    a connecting portion connected between the opening/closing portion and the fixation portion and applying a specific elastic force to the opening/closing portion in a direction contacting to the suction hole.    
     
     
         5 . The assembly for the hermetic compressor according to  claim 4 , wherein the fixation portion is formed so as to have a width larger than a width of the connecting portion in order to be stably fixed to the cylinder head.  
     
     
         6 . The assembly for the hermetic compressor according to  claim 4  or  5 , wherein the fixation portion is fixed to the surface of the cylinder head by a welding.  
     
     
         7 . The assembly for the hermetic compressor according to  claim 4 , wherein the connecting portion is a plate spring having a specific length and a specific width to provide a certain elastic force to the opening/closing portion within a range not disturbing a flow of the fluid flowing into the cylinder.  
     
     
         8 . The assembly for the hermetic compressor according to  claim 4 , wherein the opening/closing portion is formed as a circular plate shape having a diameter larger than a diameter of the suction hole.  
     
     
         9 . The assembly for the hermetic compressor according to  claim 1 , wherein the discharge valve includes: 
 a fixation portion fixed to the surface of the cylinder head combined with the head cover;    an opening/closing portion contacted to the discharge hole, performing an opening/closing operation and having a diameter larger than a diameter of the discharge hole; and    a connecting portion connected between the opening/closing portion and the fixation portion and providing a certain elastic force in a direction at which the opening/closing portion is contacted to the suction hole.    
     
     
         10 . The assembly for the hermetic compressor according to  claim 9 , wherein the fixation portion is formed so as to have a width larger than a width of the connecting portion in order to be stably fixed to the surface of the cylinder head.  
     
     
         11 . The assembly for the hermetic compressor according to  claim 9  or  10 , wherein the fixation portion is fixed to the surface of the cylinder head by a welding.  
     
     
         12 . The assembly for the hermetic compressor according to  claim 9 , wherein the connecting portion is formed so as to have a width larger than a width of the connecting portion of the suction valve.  
     
     
         13 . The assembly for the hermetic compressor according to  claim 9  or  12 , wherein the connecting portion is formed so as to have a length shorter than a length of the connecting portion of the suction valve.  
     
     
         14 . The assembly for the hermetic compressor according to  claim 9 , wherein the opening/closing portion is formed as a circular plate shape having a diameter larger than a diameter of the discharge hole.  
     
     
         15 . The assembly for the hermetic compressor according to  claim 1 , wherein the head cover includes: 
 a suction space at which the fluid flows into from outside by connecting to the suction hole;    a discharge space separated from the suction space by a septum wall, connected to the discharge hole and discharging the compressed fluid to outside; and    a fixation surface formed on the front surface and fixing the fixation portion of the discharge valve.    
     
     
         16 . The assembly for the hermetic compressor according to  claim 1  or  15 , wherein the head cover further includes: 
 a supporting portion formed by being extended from the fixation surface along the discharge valve and restricting an opening range of the discharge valve.  
 
     
     
         17 . The assembly for the hermetic compressor according to  claim 16 , wherein the supporting portion is constructed with a first supporting portion in order to support the connecting portion of the discharge valve and a second supporting portion extended from the first supporting portion so as to be inclined at a certain angle in order to restrict an opening range of the opening/closing portion of the discharge valve.  
     
     
         18 . A valve assembly for a hermetic compressor, comprising: 
 a cylinder head installed to an opened side of a cylinder having a certain space filled with a fluid and having a suction hole and a discharge hole;    a suction valve fixed to the side of the cylinder head and opening/closing the suction hole;    a discharge valve fixed to the other side of the cylinder head and opening/closing the discharge hole;    a head cover fixed to the side of the cylinder head and having a suction channel at which the fluid is sucked and a discharge channel at which the fluid is discharged;    a first reinforcing member placed between the cylinder head and the cylinder in order to reinforce the cylinder head and having a space for housing the suction valve; and    a second reinforcing member placed between the cylinder head and the head cover in order to reinforce the cylinder head and having a space for housing the discharge valve.    
     
     
         19 . The assembly for the hermetic compressor according to  claim 18 , wherein the first reinforcing member is formed as a plate shape including a suction valve installing portion punched so as to have the same shape as the suction valve in order to place the suction valve and a connecting hole connected to the discharge hole of the cylinder head.  
     
     
         20 . The assembly for the hermetic compressor according to  claim 18 , wherein the second reinforcing member is formed as a plate shape including a discharge valve installing portion punched so as to have the same shape as the discharge valve in order to place the discharge valve and a connecting hole connected to the suction hole of the cylinder head.