Heat exchanger

Abstract

A heat exchanger may include a stacked body, a bottomed tubular case housing the stacked body, and a base plate arranged on an open side of the case. The stacked body may include a plurality of stacked plates stacked to form a flow passage for a first fluid and a flow passage for a second fluid alternately in a stacking direction. An outer peripheral part of the stacked body may have a plurality of recessed parts disposed spaced apart from an inner surface of a side wall part of the case. The recessed parts may include a first and a second recessed part disposed opposite an inflow port and an outflow port of the case, respectively. The recessed parts each form a first distribution flow passage through which the first fluid is flowable in the stacking direction between the stacked body and the side wall part of the case.

1 . A heat exchanger, comprising:
 a stacked body including a plurality of stacked plates stacked to form a flow passage for a first fluid and a flow passage for a second fluid alternately in a stacking direction;   a bottomed tubular case housing the stacked body and having an open side in the stacking direction; and   a base plate arranged on the open side of the case;   wherein the case includes an inflow port and an outflow port through which the first fluid is passable, the inflow port and the outflow port disposed in a side wall part of the case that extends in the stacking direction;   wherein an outer peripheral part of the stacked body lies along an inner surface of the side wall part of the case, and has a plurality of recessed parts disposed spaced apart from the inner surface of the side wall part, the plurality of recessed parts including a first recessed part disposed in a portion of the outer peripheral part opposite the inflow port and a second recessed part disposed in a portion of the outer peripheral part opposite the outflow port; and   wherein the plurality of recessed parts each form a first distribution flow passage through which the first fluid is flowable in the stacking direction between the outer peripheral part of the stacked body and the inner surface of the side wall part of the case.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the case is a rectangular shape when viewed from the stacking direction, and the inflow port and the outflow port are arranged at locations adjacent to each of a pair of diagonally opposed corner parts along a pair of edges of the rectangular shape. 
     
     
         3 . The heat exchanger according to  claim 2 , wherein the plurality of plates have a rectangular plate shape in which corner parts of the rectangular shape have been cut away to form the plurality of recessed parts. 
     
     
         4 . The heat exchanger according to  claim 3 , wherein:
 the plurality of plates each include a plurality of through-holes arranged at a different pair of corner parts from the corner parts at which the plurality of recessed parts are formed; and   a second distribution flow passage through which the second fluid is flowable in the stacking direction is formed by the plurality of through-holes.   
     
     
         5 . A heat exchanger, comprising:
 a stacked body including a plurality of stacked plates defining a plurality of first flow passages for a first fluid and a plurality of second flow passages for a second fluid, the plurality of first flow passages and the plurality of second flow passages arranged in an alternating manner in a stacking direction;   a bottomed tubular case housing the stacked body and having an open side in the stacking direction;   a base plate arranged on the open side of the case;   the case including an inflow port and an outflow port through which the first fluid is flowable, the inflow port and the outflow port arranged on a side wall of the case extending in the stacking direction;   an outer periphery of the stacked body lying along an inner surface of the side wall of the case includes a plurality of recessed parts that define a plurality of distribution flow passages through which the first fluid is flowable between the outer peripheral part of the stacked body and the inner surface of the side wall part of the case in the stacking direction;   wherein the plurality of recessed parts includes:
 a first recessed part arranged proximal to the inflow port and defining a first distribution flow passage of the plurality of distribution flow passages; and 
 a second recessed part arranged proximal to the outflow port and defining a second distribution flow passage of the plurality of distribution flow passages. 
   
     
     
         6 . The heat exchanger according to  claim 5 , wherein:
 the inflow port is arranged on and projects from a first wall portion of the side wall; and   the outflow port is arranged on and projects from a second wall portion of the side wall, which is disposed opposite the first wall portion.   
     
     
         7 . The heat exchanger according to  claim 6 , wherein the inflow port and the outflow port project from the case in opposite directions. 
     
     
         8 . The heat exchanger according to  claim 7 , wherein:
 the case has a rectangular shape when viewed in the stacking direction;   the inflow port is arranged adjacent to a first corner of the case; and   the outflow port is arranged adjacent to a second corner of the case, which is disposed diagonally opposite the first corner.   
     
     
         9 . The heat exchanger according to  claim 5 , wherein each plate of the plurality of plates includes a first recessed corner region and a second recessed corner region, the plurality of first recessed corner regions of the plurality of plates collectively defining the first recessed part, and the plurality of second recessed corner regions of the plurality of plates collectively defining the second recessed part. 
     
     
         10 . The heat exchanger according to  claim 9 , wherein:
 the first recessed corner region and the second recessed corner region are arranged diagonally opposite one another;   each plate of the plurality of plates includes a first through-hole and a second through-hole through which the second fluid is flowable, the first through-hole and the first recessed corner region arranged opposite one another on a first side of the plate, the second through-hole and the second recessed corner region arranged opposite one another on an opposite, second side of the plate;   the plurality of first through-holes of the plurality of plates collectively define a third distribution flow passage through which the second fluid is flowable in the stacking direction; and   the plurality of second through-holes of the plurality of plates collectively define a fourth distribution flow passage through which the second fluid is flowable in the stacking direction.