Heat exchanger

Abstract

The heat exchanger is provided with: a plurality of first members including walls that have introduction holes on a first end side and discharge holes on a second end side, with spaces connecting the introduction holes and the discharge holes serving as first channels through which fluid flows; second members that communicate with the introduction holes at the first end side of the plurality of first members to introduce the first fluid to the first members; and third members that communicate with the discharge holes at the second end side of the plurality of first members to discharge the first fluid that has flowed through the first members. In at least one adjacent pair of the introduction holes, regions that overlap with opening regions of the upstream-side introduction holes exist in the walls including the downstream-side introduction holes, when viewed in a direction in which the first fluid flows.

1 . A heat exchanger that is formed from a ceramic and performs heat exchange between a first fluid and a second fluid, the heat exchanger comprising:
 a plurality of first members comprising walls that have introduction holes on a first end side and discharge holes on a second end side, with spaces connecting the introduction holes and the discharge holes serving as first channels through which the first fluid flows;   an introduction channel comprising second members that communicate with the introduction holes at the first end side of the plurality of first members to introduce the first fluid into the first members; and   a discharge channel comprising third members that communicate with the discharge holes at the second end side of the plurality of first members to discharge the first fluid that has flowed in the first members;   spaces between the plurality of first members serving as second channels through which the second fluid flows; and   wherein, in at least one adjacent pair of the introduction holes, a region of a wall forming a downstream-side introduction hole of the at least one adjacent pair overlaps with an opening region of an upstream-side introduction hole of the at least one adjacent pair in a direction in which the first fluid flows.   
     
     
         2 . A heat exchanger that is formed from a ceramic and performs heat exchange between a first fluid and a second fluid, the heat exchanger comprising:
 a plurality of first members comprising walls that have introduction holes on a first end side and discharge holes on a second end side, with spaces connecting the introduction holes and the discharge holes serving as first channels through which the first fluid flows;   an introduction channel comprising second members that communicate with the introduction holes at the first end side of the plurality of first members to introduce the first fluid into the first members; and   a discharge channel comprising third members that communicate with the discharge holes at the second end side of the plurality of first members to discharge the first fluid that has flowed in the first members;   spaces between the plurality of first members serving as second channels through which the second fluid flows; and   wherein, in at least one adjacent pair of the discharge holes, a region of a wall forming a downstream-side discharge hole of the at least one adjacent pair overlaps with an opening region of an upstream-side discharge hole of the at least one adjacent pair in a direction in which the first fluid flows.   
     
     
         3 . The heat exchanger according to  claim 1 , wherein the at least one of the plurality of first members includes a chamfered area in a side of a center section, on an interior edge of the downstream-side introduction hole, and wherein the center section is between the introduction hole and the discharge hole of the at least one of the plurality of first members. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the at least one of the plurality of first members includes a protruding area between the downstream-side introduction hole and an upstream-side discharge hole of the at least one of the plurality of first members, around an interior edge of the downstream-side introduction hole. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein an arithmetic mean roughness Ra2 of an inner face of each of the introduction holes adjacent to a downstream side of the second members is greater than an arithmetic mean roughness Ra1 of an inner face of the one of the second members. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein an arithmetic mean roughness Ra4 of an inner face of each of the discharge holes adjacent to a downstream side of the third members is greater than an arithmetic mean roughness Ra3 of an inner face of the one of the third members. 
     
     
         7 . The heat exchanger according to  claim 2 , wherein the at least one of the plurality of first members includes a chamfered area in a side of a center section, on an interior edge of the downstream-side discharge hole, and wherein the center section is between the introduction hole and the discharge hole of the at least one of the plurality of the first members. 
     
     
         8 . The heat exchanger according to  claim 2 , wherein the at least one of the plurality of first members includes a protruding area on a center section of the at least one of the plurality of first members, around an interior edge of the downstream-side discharge hole, and wherein the center section is the downstream-side discharge hole and an upstream-side introduction hole. 
     
     
         9 . The heat exchanger according to  claim 2 , wherein an arithmetic mean roughness Ra2 of an inner face of each of the introduction holes adjacent to a downstream side of the second members is greater than an arithmetic mean roughness Ra1 of an inner face of the one of the second members. 
     
     
         10 . The heat exchanger according to  claim 2 , wherein an arithmetic mean roughness Ra4 of an inner face of each of the discharge holes adjacent to a downstream side of the third members is greater than an arithmetic mean roughness Ra3 of an inner face of the one of the third members.