Discharge valve and compressor having the same

Abstract

Disclosed herein are a discharge valve and a compressor having the same. The discharge valve includes a valve casing having a hook formed around the upper portion thereof such that the hook is seated on a discharge port of a cylinder block, a first opening formed at the center of the upper portion for introduction of a compressed fluid, and a second opening formed around the lower portion thereof for discharge of the compressed fluid, a core body disposed within the valve casing, an elastic body disposed to touch one side of the core body, and a support block mounted to the lower end of the valve casing to support the elastic body. According to the disclosure, the separation of the discharge valve can be prevented due to back pressure between a discharge pipe and the inside of the compressor by pressing the discharge valve against a discharge gasket.

1 . A discharge valve for compressors, comprising:
 a valve casing having a hook formed around one side thereof such that the hook is seated on a discharge port of a rear housing, a first opening formed at a center of the one side for introduction of a compressed fluid, and a second opening formed around the other side thereof for discharge of the compressed fluid;   a core body disposed within the valve casing;   an elastic body disposed to touch one side of the core body; and   a support block mounted to the other side of the valve casing to support the elastic body.   
     
     
         2 . The discharge valve according to  claim 1 , wherein the hook comprises:
 a first hook disposed around the one side of the valve casing; and   a second hook disposed around the one side of the valve casing at a position facing the first hook.   
     
     
         3 . The discharge valve according to  claim 2 , wherein the first hook has a greater length than the second hook. 
     
     
         4 . The discharge valve according to  claim 2 , wherein the first and second hooks have different length. 
     
     
         5 . The discharge valve according to  claim 2 , wherein the first hook comprises:
 a first piece having a flat inner surface and a round outer surface; and   a first support bar disposed between one surface of the valve casing and an inner surface of the first piece to support the first piece.   
     
     
         6 . The discharge valve according to  claim 2 , wherein the second hook comprises:
 a second piece having a flat inner surface and a round outer surface; and   a second support bar disposed between one surface of the valve casing and an inner surface of the second piece to support the second piece.   
     
     
         7 . The discharge valve according to  claim 1 , further comprising:
 a recessed groove formed along a central circumference of the valve casing; and   a sealing unit disposed in the recessed groove to be pressed against an inner surface of an outlet.   
     
     
         8 . The discharge valve according to  claim 1 , wherein the valve casing, the core body, and the support block are made of plastic. 
     
     
         9 . A compressor comprising:
 a valve plate provided with a discharge gasket having a discharge port through which a compressed fluid is discharged;   a rear housing connected to the valve plate and having a discharge chamber connected to the discharge port; and   a discharge valve disposed on the discharge chamber and comprising first and second hooks having different lengths corresponding to the shape of the discharge gasket.