Refrigerant flow path module, refrigeration cycle apparatus, and method of manufacturing refrigeration cycle apparatus

Abstract

A refrigerant flow path module includes: a module body having a refrigerant flow path therein and including a stack of stainless steel plates; and a first straight connecting pipe, made of a material containing copper as a main component, that is connected to the module body. The module body has a first surface at one end in a stacking direction of the stainless steel plates and a second surface at the other end in the stacking direction. One end of the first straight connecting pipe is inserted into a first opening on the first surface of the module body. The other end of the first straight connecting pipe has a connected surface to which a first refrigerant pipe, made of a material containing copper as a main component, is connected. The first connecting pipe has a length of 25 mm or more and less than 56 mm.

What is claimed is: 
     
         1 . A refrigerant flow path module comprising:
 a module body having a refrigerant flow path therein and comprising a stack of stainless steel plates; and   a first straight connecting pipe, made of a material containing copper as a main component, that is connected to the module body, wherein   the module body has a first surface at one end in a stacking direction of the stainless steel plates and a second surface at the other end in the stacking direction,   one end of the first straight connecting pipe is inserted into a first opening on the first surface of the module body,   the other end of the first straight connecting pipe has a connected surface to which a first refrigerant pipe, made of a material containing copper as a main component, is connected, and   the first connecting pipe has a length of 25 mm or more and less than 56 mm.   
     
     
         2 . The refrigerant flow path module according to  claim 1 , further comprising:
 a second straight connecting pipe, made of a material containing copper as a main component, that is connected to the module body, wherein   one end of the second connecting pipe is inserted into a second opening on the second surface of the module body,   the other end of the second connecting pipe has a connected surface to which a second refrigerant pipe, made of a material containing copper as a main component, is connected, and   the second connecting pipe has a length of 25 mm or more and less than 56 mm.   
     
     
         3 . A refrigeration cycle apparatus comprising:
 the refrigerant flow path module according to  claim 1 ; and   the first refrigerant pipe connected to a connected surface of the first connecting pipe of the refrigerant flow path module.   
     
     
         4 . A refrigeration cycle apparatus comprising:
 the refrigerant flow path module according to claim  2 ;   the first refrigerant pipe connected to the connected surface of the first connecting pipe of the refrigerant flow path module; and   the second refrigerant pipe connected to the connected surface of the second connecting pipe of the refrigerant flow path module.   
     
     
         5 . A method of manufacturing the refrigeration cycle apparatus according to  claim 3 , the method comprising:
 inserting the other end of the first connecting pipe of the refrigerant flow path module into the first refrigerant pipe; and   brazing an inner peripheral surface of the inserted first refrigerant pipe to the connected surface of the first connecting pipe.   
     
     
         6 . The method of manufacturing the refrigeration cycle apparatus according to  claim 5 , wherein the brazing is performed with the first surface of the module body of the refrigerant flow path module facing downward. 
     
     
         7 . A method of manufacturing the refrigeration cycle apparatus according to  claim 4 , the method comprising:
 inserting the other end of the first connecting pipe of the refrigerant flow path module into the first refrigerant pipe;   brazing an inner peripheral surface of the inserted first refrigerant pipe to the connected surface of the first connecting pipe with the first surface of the module body of the refrigerant flow path module facing downward;   inserting the other end of the second connecting pipe of the refrigerant flow path module into the second refrigerant pipe; and   brazing an inner peripheral surface of the inserted second refrigerant pipe to the connected surface of the second connecting pipe with the second surface of the module body of the refrigerant flow path module facing downward.