Valve coupling structure of reciprocating compressor and coupling method thereof

Abstract

A valve coupling structure of a reciprocating compressor and a coupling method thereof, including a piston ( 20 ) which performs a linear reciprocating movement inside a cylinder ( 10 ) by having a gas flow path (F) in which gas flows, a valve ( 40 ) which is positioned to be contacted on an end surface of the piston ( 20 ) to open and close the gas flow path (F) of the piston ( 20 ), and a diffusion bonding portion (D) which is diffused and combined to a part of an end surface of the piston ( 20 ) and the contact surface of the valve ( 40 ) which is contacted on an end surface of the piston ( 20 ) by movement of atoms or movement among atoms which form the valve ( 40 ) using an energy source of the outside can make coupling state of the piston ( 20 ) which performs linear reciprocating movement inside the cylinder ( 10 ) and valve ( 40 ) more firm.

1 . A valve coupling structure of a reciprocating compressor, comprising: 
 a piston which performs a linear reciprocating movement inside a cylinder with having a gas flow path in which gas flows;    a valve which is positioned to be contacted on an end surface of the piston to open and close the gas flow path of the piston; and    a diffusion bonding portion which is diffused and combined to a part of an end surface of the piston and the contact surface of the valve which is contacted on an end surface of the,!piston by movement of atoms or movement among atoms, which form the valve by using an energy source of the outside.    
     
     
         2 . The structure of  claim 1 , wherein the valve is made of stainless is material.  
     
     
         3 . The structure of  claim 1 , wherein insertion material having a similar atomic structure as the valve is inserted and combined being fixed on an end surface of the piston on which the valve is contacted.  
     
     
         4 . The structure of  claim 3 , wherein the piston and insertion material are coupled each other by brazing welding.  
     
     
         5 . The structure of  claim 3 , wherein the valve is made of stainless material.  
     
     
         6 . The structure of  claim 1 , wherein the energy source is formed by using a predetermined resistance heat generated by electrifying a current between two contact surfaces.  
     
     
         7 . The structure of  claim 6 , wherein the predetermined resistance heat is lower than 450° C.  
     
     
         8 . A valve coupling method of a reciprocating compressor, comprising the steps of: 
 processing a contact surface of an end surface of a piston and a valve which is contacted with the end surface of the piston;    contacting the contact surface of the valve on the end surface of the piston;    performing first pressurization so that the surface of the piston and surface of the valve are permanently deformed in a pressurization part of the contact surface of the end surface of the piston and the valve by pressurizing a part of the contact surface of the end surface of the piston and the valve which is contacted on the end surface of the piston;    performing second pressurization so that the atoms of the above materials are moved and coupled as the surface of the piston and the surfaces of the valve are permanently deformed; and    removing the pressure added to the piston and valve.