Heat exchanger

Abstract

An oil cooler 2 as a heat exchanger includes a male plate 100 having an upper surface 100a as a first surface configured to contact cooling water that is a heat medium, and a plurality of linearly extending protrusions 104 are formed at the upper surface 100a.

1 . A heat exchanger comprising:
 a first plate having a first surface configured to contact a heat medium, the first surface having a plurality of first protrusions extending linearly formed at the first surface.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein each of the plurality of first protrusions extends to intersect a flow direction of the heat medium. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein
 the first surface is divided into a first region and a second region each extending in a flow direction of the heat medium, and   in the plurality of first protrusions, protrusions in the first region and protrusions in the second region extend in directions intersecting each other.   
     
     
         4 . The heat exchanger according to  claim 1 , wherein
 the first plate further includes an opposite surface located on a side opposite to the first surface, the opposite surface being configured to contact a fluid to exchange heat with the heat medium, and   a plurality of grooves extending linearly are formed at the opposite surface.   
     
     
         5 . The heat exchanger according to  claim 4 , wherein each of the plurality of grooves extends to intersect a flow direction of the fluid. 
     
     
         6 . The heat exchanger according to  claim 4 , wherein
 the opposite surface is divided into a third region and a fourth region, the third region and the fourth region each extending in a flow direction of the fluid, and   in the plurality of grooves, grooves in the third region and grooves in the fourth region extend in directions intersecting each other.   
     
     
         7 . The heat exchanger according to  claim 4 , further comprising
 a diffusion member configured to diffuse a flow of the heat medium or fluid that contacts either the opposite surface or at least one of the plurality of first protrusions.   
     
     
         8 . The heat exchanger according to  claim 4 , wherein the plurality of first protrusions are aligned with the plurality of grooves, when viewed in a direction orthogonal to the first surface. 
     
     
         9 . The heat exchanger according to  claim 1 , further comprising:
 a second plate having a second surface configured to contact the heat medium, the second surface having a plurality of second protrusions extending linearly formed at the second surface, wherein   the first surface faces the second surface.   
     
     
         10 . The heat exchanger according to  claim 9 , wherein at least one of the plurality of first protrusions contacts corresponding one of the plurality of second protrusions. 
     
     
         11 . The heat exchanger according to  claim 9 , wherein each of the plurality of first protrusions extends in a direction intersecting the plurality of second protrusions.