Compressor and method of manufacturing the same

Abstract

An object is to provide a compressor capable of surely preventing leakage of a refrigerant gas from a connection portion between an airtight container and a pipe to the outside at low costs. The compressor comprises an airtight container to which a refrigerant introduction pipe is connected, and a compression element received in the airtight container to discharge the refrigerant into the same. The refrigerant introduction pipe has a cylindrical pipe main body, and a jaw-like flange portion formed in a tip of the pipe main body. A cylindrical connection sleeve is disposed between the refrigerant introduction pipe and the airtight container. A first bolt is disposed to connect the connection sleeve to the airtight container, and a second bolt is disposed to connect the connection sleeve to the flange portion of the refrigerant introduction pipe. The flange portion of the refrigerant introduction pipe hides the first bolt.

1 . A compressor comprising an airtight container to which a pipe of a refrigerant is connected, and a compression element received in the airtight container to discharge the refrigerant into the same, wherein: 
 the pipe has a cylindrical pipe main body, and a jaw-like flange portion formed in a tip of the pipe main body,    a connection sleeve is disposed between the pipe and the airtight container, a first connection tool is disposed to connect the connection sleeve to the airtight container, and a second connection tool is disposed to connect the connection sleeve to the flange portion of the pipe, and    the flange portion of the pipe hides the first connection tool.    
   
   
       2 . The compressor according to  claim 1 , 
 wherein a gasket is disposed at least between the airtight container and the connection sleeve or between the connection sleeve and the pipe.    
   
   
       3 . The compressor according to claims  1 , 
 wherein the airtight container and the connection sleeve are made of aluminum.    
   
   
       4 . A method of manufacturing a compressor which comprises an electric element, a compression element connected to the electric element, and an airtight container to receive the electric element and the compression element therein, and which drives the compression element by the electric element to compress and discharge an introduced refrigerant, the method comprising: 
 bringing the compression element into contact with the inside of the airtight container;    forming a through-hole which penetrates the airtight container and reaches a predetermined depth of the compression element from the outside of the airtight container; and    dropping droplets into the through-hole from a wire of a welder to weld the airtight container and the compression element together.    
   
   
       5 . The method according to  claim 4 , 
 wherein the airtight container and at least a portion of the compression element brought into contact with the airtight container are made of aluminum.    
   
   
       6 . A compressor which comprises a driving element and a compression element to be driven by the driving element in an airtight container, a refrigerant sucked through a refrigerant pipe of a refrigerant introduction side being compressed by the compression element and discharged through a refrigerant pipe of a refrigerant discharge side, wherein: 
 a sleeve is disposed which is mounted corresponding to a hole formed in a curved surface of the airtight container and to which the refrigerant pipes are connected,    a flat surface is formed in an outer surface of the airtight container around the hole, and the sleeve is fixed through a gasket to the flat surface of the airtight container by a screw, and    a collar communicated with the compression element is brought into contact with the inside of the sleeve by a sealing material.    
   
   
       7 . The compressor according to  claim 6 , 
 wherein the airtight container is made of aluminum.