Heat Exchanger

Abstract

The heat exchanger is equipped with a heat transfer member ( 10, 20 ) including a flow port ( 11, 12, 21, 22 ) for receiving or discharging a fluid ( 6, 7 ), a plurality of heat exchange passages ( 13, 23 ), and a connection passage part ( 14, 24 ) having both ends, one of the ends being connected to the flow port and the other thereof being connected to the plurality of heat exchange passages ( 13, 23 ). The connection passage part has a tournament shape branched into two by two as it advances toward the heat exchange passages.

1 . A heat exchanger comprising:
 a plurality of plate-shaped first heat transfer member through which a first fluid passes; and   a plurality of plate-shaped second heat transfer member through which a second fluid passes,   wherein
 the first heat transfer member and the second heat transfer member are stacked in a thickness direction thereof, 
 at least one of the first heat transfer member and the second heat transfer member is integrally provided with a groove-shaped flow passage including a flow port for receiving or discharging a fluid, a plurality of heat exchange passages for making the fluid exchange heat, and a connection passage part having both ends, one of the ends being connected to the flow port and the other thereof being connected to the plurality of heat exchange passages, and 
 the connection passage part has a tournament shape branched into two by two as it advances toward the heat exchange passages. 
   
     
     
         2 . The heat exchanger according to  claim 1 , wherein
 the connection passage part includes a pair of branch passages branched into two from a branch origination part, and   the branch origination part is connected to the pair of branch passages with the branch origination part directed in an extending direction of a bisector of an angle formed by the pair of branch passages.   
     
     
         3 . The heat exchanger according to  claim 2 , wherein
 the branch passage includes a first part branched from the branch origination part and a linear second part as a branch connection part, the second part being extended from the first part and connected a pair of branch passages on a heat exchanger passage side.   
     
     
         4 . The heat exchanger according to  claim 1 , wherein
 the connection passage part includes a pair of branch passages branched into two from a branch origination part, and   the pair of branch passages have an equal flow passage length to each other.   
     
     
         5 . The heat exchanger according to  claim 4 , wherein
 the pair of branch passages is formed symmetrically with respect to the branch origination part.   
     
     
         6 . The heat exchanger according to  claim 5 , wherein
 the pair of branch passages is respectively branched from the branch origination part so as to form a semi-elliptical shape.   
     
     
         7 . The heat exchanger according to  claim 6 , wherein
 the pair of branch passages is respectively branched from the branch origination part in a circular arc-shape so as to form a semicircular shape.   
     
     
         8 . The heat exchanger according to  claim 1 , wherein the heat exchanger is formed such that
 the connection passage part includes a plurality of stages of a pair of branch passages branched from a branch origination part, and   the number of the pair of branch passages arranged at end portions of the heat exchange passages side coincides with the number of the heat exchange passages.   
     
     
         9 . The heat exchanger according to  claim 8 , wherein
 the pair of branch passages arranged at the end portions of the heat exchange passages side are directly connected to respective corresponding heat exchange passages.