Method for producing an integrated heat exchanger and an integrated heat exchanger produced thereby

Abstract

In a fin forming step, fins of heat exchangers are formed into a connected state where the fins are connected to each other via a parting portion. In a fin attaching step, the fins in the connected state are temporarily attached to the respective heat exchangers. In a fin fixing step, an integrated heat exchanger in which the fins are temporarily attached is passed through a heating oven to braze the fins to the respective heat exchangers. In a fin separating step W4, the fins in the connected state of the respective heat exchangers are separated from each other in the parting portion. Therefore, each of the heat exchangers can independently perform a heat exchanging operation without being affected by heat conduction from the other heat exchanger via the fins.

1 . An integrated heat exchanger comprising: 
 a plurality of heat exchangers, which are coupled to each other in a stacking direction; and    fins attached to the heat exchangers, respectively,    wherein the fins are separated from each other.    
   
   
       2 . The integrated heat exchanger according to  claim 1 , wherein the fins in a connected state where the fins are connected to each other via a parting portion are attached to the heat exchangers and then the fins are separated from each other in the parting portion.  
   
   
       3 . The integrated heat exchanger according to  claim 1 , 
 wherein number of the fins is even number; and    wherein louvers are formed in the fins in line symmetric manner with each other.    
   
   
       4 . The integrated heat exchanger according to  claim 1 , further comprising a coupling flow portion, which flows a heat exchange medium from the heat exchanger on one end side in the stacking direction to the heat exchanger on another end side in the stacking direction therethrough.