Heat exchanger

Abstract

A heat exchanger comprises a housing, a guide member, a return member and a discharge member. The housing includes a plurality of parallel flow passages. The housing includes a first end face and a second end face each having openings. The guide member, the return member and the discharge member are fixed to the first end face or the second end face. The plurality of flow passages are connected by the return member into a single flow passage. The guide member and the discharge member are provided in the opening on a most upstream side and a most downstream of the single flow passage, respectively. At least one of the guide member, the return member and the discharge member integrally includes an attachment portion attached to the housing; and a protruding portion protruding more than the attachment portion toward the housing and including an inclined surface.

1 . A heat exchanger comprising:
 a housing comprising a plurality of parallel flow passages, the plurality of flow passages including a first end and a second end; a first end face having openings open to the first end of the plurality of flow passages; and a second end face having openings open to the second end of the plurality of flow passages;   a guide member fixed to either the first face or the second end face at a position of one of the openings and having a guide channel;   a return member, fixed to the first end face in a manner to extend over a pair of the openings in the first end face or fixed to the second end face in a manner to extend over a pair of the openings in the second end face, for connecting the pair of openings in a return manner; and   a discharge member fixed to any one of the first face and second end face at the position of one of the openings and having a discharge channel,   wherein the plurality of flow passages are connected by the return member into a single flow passage,   the guide member is provided in the opening on a most upstream side of the single flow passage,   the discharge member is provided in the opening on a most downstream side of the single flow passage, and   at least one of the guide member, the return member and the discharge member integrally includes an attachment portion attached to the housing; and a protruding portion protruding more than the attachment portion toward the housing and including an inclined surface inclining relative to a flow direction.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the protruding portion is fitted into the opening of the housing. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein a seal member is provided between the attachment portion and the housing. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein
 the guide member comprises the protruding portion, the protruding portion including the inclined surface for enlarging a cross section of the flow passage as the protruding portion is farther from the guide channel, and   the discharge member comprises the protruding portion, the protruding portion including the inclined surface for reducing a cross section of the flow passage as the protruding portion is closer to the discharge channel.   
     
     
         5 . The heat exchanger according to  claim 1 , wherein the guide, return and discharge members comprising the attachment portion and the protruding portion are made of resin. 
     
     
         6 . The heat exchanger according to  claim 1 ,
 further comprising a thermal member for exchanging heat with a heat medium in the flow passage,   wherein the thermal member includes   a Peltier device having a pair of heat sides, one of the heat sides absorbing heat and the other dissipating heat;   a first substrate brought into contact with the one of the heat sides; and   a first fin provided on the first substrate, the first fin being located in the flow passage.   
     
     
         7 . The heat exchanger according to  claim 6 ,
 wherein the thermal member includes   a second substrate brought into contact with the other heat side of the Peltier device; and a second fin provided on the second substrate, and   the housing includes a first case where the flow passage provided with the first fin therein is formed; and a second case where the flow passage provided with the second fin therein is formed.   
     
     
         8 . The heat exchanger according to  claim 1 , wherein the housing includes a first case and a second case that are stacked in a thickness direction, wherein each of the first case and the second case has the guide member, the return member and the discharge member. 
     
     
         9 . The heat exchanger according to  claim 8 , wherein the flow direction of a heat medium in the first case is opposed to the flow direction of a second heat medium in the second case.