Heat exchanger

Abstract

A heat exchanger includes a mounting section on which heat-exchanged object is mounted, and a circulation section in which a plurality of flow paths through which a heating medium flows are formed, wherein the plurality of flow paths include first flow paths in which a flow path width in a third direction vary according to advance in a first direction at a side closer to a first end portion and at a side closer to a second end portion of the first flow path in a second direction, the flow path width of the first flow path at the side closer to the first end portion varies with a decrease tendency according to advance in the first direction, and the flow path width of the first flow path at the side closer to the second end portion varies with an increase tendency according to advance in the first direction.

What is claimed is: 
     
         1 . A heat exchanger comprising:
 a mounting section on which an object to be heat-exchanged is mounted; and   a circulation section in which a plurality of flow paths through which a heating medium flows are formed,   wherein, provided that a first direction is a flow direction of the heating medium, a second direction is perpendicular to the mounting section and a third direction is perpendicular to the first and second directions, the plurality of flow paths comprise first flow paths in which a flow path width in the third direction vary according to advance in the first direction at a side closer to a first end portion of the first flow path in the second direction and at a side closer to a second end portion of the first flow path in the second direction,   the flow path width of the first flow path at the side closer to the first end portion varies with a decrease tendency according to advance in the first direction, and   the flow path width of the first flow path at the side closer to the second end portion varies with an increase tendency according to advance in the first direction.   
     
     
         2 . The heat exchanger according to  claim 1 ,
 wherein the plurality of flow paths comprise second flow paths which are disposed next to the first flow paths in the third direction and in which flow path widths in the third direction vary according to advance in the first direction at a side closer to the first end portion of the first flow path in the second direction and at a side closer to the second end portion of the first flow path in the second direction,   the flow path width of the second flow path at the side closer to the first end portion varies with an increase tendency according to advance in the first direction, and   the flow path width of the second flow path at the side closer to the second end portion varies with a decrease tendency according to advance in the first direction.   
     
     
         3 . The heat exchanger according to  claim 1 ,
 wherein a cross-sectional area on an upstream side and a cross-sectional area on a downstream side in the first direction at each of the plurality of flow paths are formed to be the same as each other.   
     
     
         4 . The heat exchanger according to  claim 1 ,
 wherein the circulation section comprises a plurality of flow path rows disposed to be arranged in the first direction,   each of the plurality of flow path rows is configured such that the plurality of flow paths are disposed to be arranged in the third direction, and   among the plurality of flow path rows, an upstream-side flow path and a downstream-side flow path next to each other are disposed to be shifted in the third direction.   
     
     
         5 . The heat exchanger according to  claim 4 ,
 wherein, among the plurality of flow path rows, the upstream-side flow path and the downstream-side flow path that are next to each other are disposed such that at least parts thereof are integrally connected to each other while being shifted at 1/N pitch in the third direction by an arbitrary natural number N larger than 1.