Heat exchanger

Abstract

A heat exchanger in one aspect of the present disclosure comprises a plurality of plates and a fin. The fin comprises at least one first portion and at least one second portion. The at least one first portion is a wall surface that comprises at least one first opening. The at least one second portion, which is paired with the first portion, is a wall surface different from the first portion. The second portion comprises a second opening paired with a corresponding one of the at least one first opening. The fin comprises at least one opening pair, which is a pair of the first opening and the second opening. The at least one opening pair has a non-overlapping positional relationship in which the paired first opening and second opening are at least partially non-overlapping along a flow direction of a second fluid.

1 . A heat exchanger to exchange heat between a first fluid and a second fluid, the heat exchanger comprising:
 a plurality of plates comprising a flow path through which the first fluid flows; and   a fin configured to couple mutually adjacent plates among the plurality of plates,   wherein the fin comprises:
 at least one first portion that is a wall surface and comprises at least one first opening; 
 at least one second portion that is a wall surface paired with the first portion and is different from the first portion, the at least one second portion comprising a second opening paired with a corresponding one of the at least one first opening,
 the paired first portion and second portion providing a wave-shaped section, and 
 the first portion and the second portion each being arranged in a direction orthogonal to a flow direction of the second fluid; and 
 
 at least one opening pair that is a pair of the first opening and the second opening,
 the at least one opening pair having a non-overlapping positional relationship in which the paired first opening and second opening are at least partially non-overlapping along the flow direction of the second fluid. 
 
   
     
     
         2 . The heat exchanger according to  claim 1 ,
 wherein each of the plurality of plates has a cylindrical shape,   wherein the plurality of plates are arranged along an axial direction, and   wherein the fin is arranged along a circumferential direction of the plates.   
     
     
         3 . The heat exchanger according to  claim 1 , wherein the at least one opening pair is such that the paired first opening and second opening are entirely non-overlapping along the flow direction of the second fluid. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the fin is such that each of the opening pair has the non-overlapping positional relationship. 
     
     
         5 . The heat exchanger according to  claim 2 , wherein the at least one opening pair is such that the paired first opening and second opening are entirely non-overlapping along the flow direction of the second fluid. 
     
     
         6 . The heat exchanger according to  claim 2 , wherein the fin is such that each of the opening pair has the non-overlapping positional relationship. 
     
     
         7 . The heat exchanger according to  claim 3 , wherein the fin is such that each of the opening pair has the non-overlapping positional relationship.