JP4735393B2 - Heat exchanger and heat exchange type reformer - Google Patents

Description

  The present invention relates to a heat exchanger and a heat exchange type reformer for generating hydrogen by reforming a reforming raw material to which the heat exchanger is applied.

A reforming channel for reforming a hydrocarbon raw material to generate a hydrogen-containing gas between a plurality of stacked plates, and a fuel gas for supplying heat for reforming reaction to the reforming channel There is known a cross flow type fuel reformer in which a heating flow path for combustion is formed so as to be adjacent to each other via a plate (see, for example, Patent Document 1).
Japanese Patent Application Laid-Open No. 2004-244230

  However, in the conventional technology as described above, when a manifold for distributing gas to a plurality of reforming channels and heating channels or collecting a gas from the plurality of reforming channels and heating channels is provided, a rectangular cylindrical shape is provided. Since the manifold member is joined to the end face of the laminated plate, it is possible to ensure the gas sealability (airtightness) of the joined portion between the joined surface constituted by a plurality of plates and extending in the laminating direction and the manifold member. It was difficult.

  In view of the above facts, the present invention provides a heat exchanger and a heat exchange type reformer that can effectively prevent leakage via a lamination boundary in a laminated core in which a plurality of unit members are laminated. Is the purpose.

In order to achieve the above object, a heat exchanger according to a first aspect of the present invention includes a heat exchange flow path forming section, a first inlet flow path forming section, a first outlet flow path forming section, and a second inlet flow path forming section. And by stacking a plurality of unit members in which the second outlet flow path forming portion is independently extended along the same plane, the first heat exchange medium flowing from the first inlet flow path forming portion is A first heat exchange channel that flows out to the first outlet channel formation unit side, and a second heat exchange medium that flows in from the second inlet channel formation unit to the second outlet channel formation unit side A laminated core including a plurality of heat exchange portions adjacent to each other via a heat exchange passage forming portion of the unit member; and a first inlet passage in the laminated core formed in a cylindrical shape Laminating portion of forming portion, laminating portion of first outlet channel forming portion, laminating portion of second inlet channel forming portion, and second outlet flow Together to insert the at least one of the stacked portion of the forming section, and a bonded tubular body over the entire circumference in the stacking portion inner surface was inserted, the first inlet passage formation portions in the stacked core The laminated portion, the laminated portion of the first outlet flow path forming portion, the laminated portion of the second inlet flow passage forming portion, and the laminated portion of the second outlet flow passage forming portion are accommodated and joined to the laminated portion accommodated on the inner surface. The four cylindrical bodies thus formed are integrally provided in a heat exchange portion accommodating portion that accommodates a laminated portion of the heat exchange flow path forming portion, respectively, and constitute a case that covers the laminated core from the outside as a whole. ing.

  2. The heat exchanger according to claim 1, wherein the laminated core includes a laminated portion of the first inlet flow passage forming portion and a laminated portion of the first outlet flow passage forming portion from the laminated portion of the heat exchange flow passage forming portion (heat exchange portion). The stacked portion of the second inlet flow path forming portion and the stacked portion of the second outlet flow path forming portion protrude in different directions (sides) to form a protruding portion, and of these at least four protruding portions At least one is inserted or inserted into the cylindrical body. Since the cylindrical body is joined to the outer surface (outer periphery) of the protruding portion on the inner surface, the cylindrical body is compared with the configuration in which the cylindrical body is joined to the opening end surface that is the inlet or outlet of the heat exchange medium of each flow path forming portion. , It is possible to perform bonding with a large bonding area (with a bonding width in the flow direction of the heat exchange medium secured). Thereby, the joining structure in which sealing performance is ensured is obtained. Then, for example, a manifold having a sealing property can be configured by extending the cylindrical body to the side opposite to the heat exchange flow path forming portion or joining another cylindrical member.

As described above, in the heat exchanger according to the first aspect, it is possible to effectively prevent the leakage through the lamination boundary in the laminated core in which the plurality of unit members are laminated. In addition, as joining (method) of a laminated core and a cylindrical body, brazing, diffusion joining, etc. can be used, for example. Further, the first and second heat exchange media may be in the gas phase or in the liquid phase.
Further, in the present heat exchanger, the case is configured such that the first heat exchange medium flows from each first inlet channel forming unit side to the first outlet channel forming unit side, and from each second inlet channel forming unit side. The laminated core as a whole is covered from the outside so as to allow the second heat exchange medium to flow to the second outlet flow path forming part side. In this case, the four protrusions (the first inlet flow path forming portion, the first core flow passage forming portion, and the heat exchange portion accommodating portion that accommodates the laminated portion of the heat exchange flow path forming portion (heat exchanging portion) in the laminated core. A cylindrical body that accommodates the first outlet channel forming part, the second inlet channel forming part, and the second outlet channel forming part) is integrally provided, and each cylindrical body Since the inner surface is joined to the corresponding projecting part over the entire circumference, even if a leak occurs from the lamination boundary of the laminated core on the heat exchange flow path forming part side with respect to each joined part, the leaked heat exchange medium is not joined. This prevents leakage outside the case.

  The heat exchanger according to a second aspect of the present invention is the heat exchanger according to the first aspect, wherein the cylindrical body includes the first inlet flow path forming portion, the first outlet flow path forming portion, and the second inlet flow. It has a manifold part which protrudes on the opposite side to the heat exchange channel formation part to the opening end of a channel formation part or the 2nd exit channel formation part.

  In the heat exchanger according to claim 2, for example, the cylindrical body is extended to the side opposite to the heat exchange flow path forming portion, or another cylindrical member is joined, thereby opening the protruding portion. A manifold portion is formed that protrudes to the opposite side of the heat exchange flow path forming portion from the end. Thereby, the sealing performance between the inflow portion and the outflow portion of the heat exchange medium and the laminated core is ensured.

In order to achieve the above object, a heat exchanger according to a third aspect of the present invention includes a heat exchange channel forming unit, a first inlet channel forming unit, a first outlet channel forming unit, and a second inlet channel forming unit. And by stacking a plurality of unit members in which the second outlet channel forming part is independently extended along the same plane, the first heat exchange medium introduced from the first inlet channel forming part is The first flow path that flows so as to flow out from the first outlet flow path forming section, and the second heat exchange medium introduced from the second inlet flow path forming section flows out from the first outlet flow path forming section. And the second flow path to be circulated is formed corresponding to the outer shape of the laminated core adjacent to the laminated core through the heat exchange flow path forming portion of the unit member, and accommodates the laminated core Part of the inner surface is joined to the laminated core over the entire circumference along the plane intersecting the flow direction of the heat exchange medium. And cases, wherein the case includes a first inlet passage formation portion of the laminated core, a first outlet passage formation portion, a second inlet passage formation portion, and each lamination of the second outlet passage formation portion The inner surface is joined to each part over the perimeter along the intersection surface with the flow direction of the heat exchange medium .

The heat exchanger according to claim 3 , wherein the laminated core includes a laminated portion of the first inlet flow passage forming portion, a laminated portion of the first outlet flow passage forming portion, a second inlet flow from the laminated portion of the heat exchange flow passage forming portion. The laminated part of the path forming part and the laminated part of the second outlet flow path forming part each have a protruding part protruding in a different direction (side). The laminated core is configured to distribute the first heat exchange medium from the first inlet channel forming unit side to the first outlet channel forming unit side, and to form the second outlet channel from the second inlet channel forming unit side. It is accommodated in the case as a whole so that the second heat exchange medium can be distributed to the section side.

  Since the case is joined to the outer surface (outer periphery) of the laminated core (the laminated portion or the protruding portion of the heat exchange flow path forming portion) on the inner surface, the inlet or outlet of the heat exchange medium of each flow path forming portion in the protruding portion Compared with the structure which joins to the opening end surface which is, it can join with a large joining area (ensure the joining width of the flow direction of a heat exchange medium). Thereby, the joining structure in which sealing performance is ensured is obtained. And, for example, a manifold that secures sealing performance is configured by extending a portion of the case that accommodates the protruding portion to the opposite side of the heat exchange flow path forming portion or joining a cylindrical member. Can do.

As described above, in the heat exchanger according to the third aspect, it is possible to effectively prevent the leakage through the lamination boundary in the laminated core in which the plurality of unit members are laminated. As the bonding (method) between the laminated core and the case, for example, brazing or diffusion bonding can be used. Further, the first and second heat exchange media may be in the gas phase or in the liquid phase.

Further, in the present heat exchanger, the case includes the above-described four projecting portions (a first inlet channel forming unit, a first outlet channel forming unit, a second inlet channel forming unit, and a second outlet channel forming unit). Each of the laminated portions) is joined to the corresponding projecting portion over the entire circumference on each inner surface, so that from the laminated boundary of the laminated core on the heat exchange flow path forming portion side with respect to each joined portion Even if this leak occurs, the leaked heat exchange medium is prevented from leaking out of the case by the joint.

A heat exchanger according to a fourth aspect of the present invention is the heat exchanger according to the third aspect , wherein the case includes a first inlet channel forming portion, a first outlet channel forming portion, and a second inlet of the laminated core. On the heat exchange flow path forming part side with respect to the four joint parts joined to the respective laminated portions of the flow path forming part and the second outlet flow path forming part over the entire circumference, the inner surface is the flow direction of the heat exchange medium. It is joined to the laminated core over the entire circumference along the intersecting surface.

In the heat exchanger according to claim 4 , a leak region (space) from the lamination boundary of the laminated core sealed by the joint between the four protrusions and the case described above into the case is the four joints. Therefore, leakage to the outside of the case is more effectively prevented. In particular, in a configuration in which a leak region closed inside the leak region sealed by the outer joint is formed at the inner joint, leakage to the outside of the case is more effectively prevented.

A heat exchanger according to a fifth aspect of the present invention is the heat exchanger according to the third or fourth aspect , wherein the case includes the first inlet flow passage forming portion, the first outlet flow passage forming portion, and the second. A manifold part is formed integrally with the inlet channel forming part and the second outlet channel forming part so as to protrude and open on the opposite side of the heat exchange channel forming part.

In the heat exchanger according to the fifth aspect , the case is integrally formed with a manifold portion that protrudes to the opposite side of the heat exchange flow path forming portion from the opening end of the protrusion portion. As a result, a manifold in which the sealing performance between the inflow portion and the outflow portion of the heat exchange medium and the laminated core is ensured simply by housing (joining) the laminated core in the case.

A heat exchanger according to a sixth aspect of the present invention is the heat exchanger according to any one of the first to fifth aspects, wherein the heat exchanger is joined to the case, and the first inlet flow path forming portion and the first outlet are joined. Further provided is a manifold member that forms a space communicating with the opening of the flow path forming portion, the second inlet flow path forming portion, or the second outlet flow path forming portion.

In the heat exchanger according to claim 6, since the manifold is configured or expanded (expanded) by joining a manifold member to the case, the adjustment is made according to the shape of the flow path on the inflow side and the outflow side of each heat exchange medium. The part can be easily configured (there is no restriction due to the shape of the case). Since the portion of the case that accommodates the protruding portion (in the configuration dependent on claim 3, the cylindrical portion) is formed in a cylindrical shape, the bonding at the bonding portion without the stacking boundary is realized, and the sealing property is secured. Manifold members can be joined.

According to a seventh aspect of the present invention, there is provided a heat exchange type reformer comprising a reforming channel for performing a reforming reaction for generating a hydrogen-containing gas from a reforming material introduced from the first inlet channel forming part side. Heating for supplying the heat for advancing the reforming reaction to the reforming channel by combusting the fuel supplied from the second inlet channel forming part side as the first heat exchange channel The heat exchanger according to any one of claims 1 to 6 , wherein a flow path is the second heat exchange flow path.

In the heat exchange type reformer according to claim 7, in the reforming channel (first channel) into which the reforming raw material is introduced from the first inlet channel forming unit, the heating channel (second channel) is used. A reforming reaction is performed while receiving supply of combustion heat accompanying the combustion (performing heat exchange), and a hydrogen-containing gas is generated from the reforming raw material. Since the heat exchangers (structures) having the above-described structures are applied, gas leakage from the laminated core having a severe thermal history due to the heat absorption and heat generation (heat exchange) accompanying the reforming reaction is effectively prevented.

  As described above, the heat exchanger and the heat exchange type reformer according to the present invention are excellent in that leakage through a lamination boundary in a laminated core in which a plurality of unit members are laminated can be effectively prevented. Has an effect.

A heat exchange type reformer 10 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. First, the overall system configuration of the fuel cell system 11 to which the heat exchange reformer 10 is applied will be described, and then the detailed structure of the heat exchange reformer 10 will be described.
(Overall configuration of fuel cell system)
FIG. 5 shows a system configuration diagram (process flow sheet) of the fuel cell system 11. As shown in this figure, the fuel cell system 11 includes a fuel cell 12 that generates power by consuming hydrogen, and a reformer (modified) for generating hydrogen-containing reformed gas to be supplied to the fuel cell 12. 10) as main components.

  The fuel cell 12 is configured by sandwiching an electrolyte (not shown) between an anode electrode (fuel electrode) 14 and a cathode electrode (air electrode) 16. The fuel cell 12 mainly includes hydrogen supplied to the anode electrode and the cathode electrode 16. It is configured to generate electricity by electrochemical reaction with supplied oxygen. Although various types of fuel cells 12 can be employed, in this embodiment, the fuel cell 12 is operated in an intermediate temperature range (about 300 ° C. to 600 ° C.) and water is generated at the cathode electrode 16 along with power generation. A fuel cell (for example, a solid polymer type or a hydrogen separation membrane type fuel cell) having a produced proton-conducting electrolyte is employed.

  As shown in FIG. 5, the heat exchange type reformer 10 includes a reforming flow path 18 as a reforming section that generates a hydrogen-containing reformed gas to be supplied to the anode electrode 14 of the fuel cell 12, and a reformer. The mass flow path 18 includes a heating flow path 20 as a heating unit for supplying heat for performing the reforming reaction. A reforming catalyst 22 is supported in the reforming channel 18, and hydrogen gas is produced by catalytic reaction of the supplied hydrocarbon gas (gasoline, methanol, natural gas, etc.) and reforming gas (steam). Is generated (reforming reaction is performed).

The reforming reaction in the reforming channel 18 includes each reaction including the steam reforming reaction represented by the formula (1) as represented by the following formulas (1) to (4). Therefore, the reformed gas obtained in the reforming process includes hydrogen (H ₂ ), carbon monoxide (CO), methane (CH ₄ ), cracked hydrocarbons, unreacted raw material hydrocarbons (C _x H _y ), etc. Combustible gas and carbon dioxide (CO ₂ ), water (H ₂ O), and other non-flammable gases.

_{C n H m + nH 2 O} → nCO + (n + m / 2) H 2 ... (1)
_{C n H m + n / 2O} 2 → nCO + m / 2H 2 ... (2)
CO + H ₂ O⇔CO ₂ + H ₂ (3)
CO + 3H ₂ ＣＨCH ₄ + H ₂ O (4)
The main steam reforming reaction of the formula (1) in the reforming reaction is an endothermic reaction, and the reforming channel 18 is supplied to the fuel cell 12 operated at an intermediate temperature or a high temperature as described above. Is supplied at a temperature higher than a predetermined temperature. The heating channel 20 is configured to supply heat for maintaining the reforming reaction and operating temperature in the reforming channel 18. The heating channel 20 is provided adjacent to the reforming channel 18 carrying the oxidation catalyst 24, and is configured to bring the supplied fuel into contact with the oxidation catalyst 24 together with oxygen to cause catalytic combustion. Yes.

  The heat exchange type reformer 10 supplies combustion heat obtained by catalytic combustion of fuel in the heating channel 20 to the reforming channel 18 via a plate portion 58 described later. For this reason, the amount of heat is directly applied to the reforming channel 18 without converting the amount of heat into temperature as in the configuration in which the reforming channel 18 is heated via a heat medium (fluid) such as combustion gas. It can be configured.

  The fuel cell system 11 includes a raw material pump 26 for supplying a hydrocarbon raw material to the reforming flow path 18, and a discharge portion of the raw material pump 26 is connected to the reforming flow path 18 via a raw material supply line 28. It is connected to the raw material inlet 18A. This hydrocarbon raw material is supplied to the reforming flow path 18 in a gas phase or atomized state, for example, by a vaporizing means (not shown) such as an evaporator or an injection.

  The reformed gas outlet 18 </ b> B of the reforming channel 18 is connected to the upstream end of the reformed gas supply line 30 whose downstream end is connected to the fuel inlet 14 </ b> A of the anode electrode 14. Thereby, the reformed gas generated in the reforming channel 18 is supplied to the anode electrode 14 of the fuel cell 12. On the other hand, the upstream end of the anode offgas line 32 is connected to the offgas outlet 14 </ b> B of the anode electrode 14, and the downstream end of the anode offgas line 32 is connected to the fuel inlet 20 </ b> A of the heating channel 20.

As described above, in the fuel cell system 11, hydrogen in the reformed gas generated in the reforming channel 18 is consumed in the fuel cell 12, and the remaining components other than the consumed hydrogen are supplied to the heating channel 20 as anode offgas. Of these, combustible components (hydrogen (H ₂ ), carbon monoxide (CO), hydrocarbon (HC), methane (CH ₄ )) are consumed as fuel in the heating channel 20. An exhaust gas line 34 for discharging combustion exhaust gas to the outside of the system is connected to the exhaust gas outlet 20B of the heating channel 20.

  The fuel cell system 11 also includes a cathode air pump 36 for supplying cathode air to the cathode electrode 16, and the discharge portion of the cathode air pump 36 has an air inlet 16 </ b> A at the downstream end of the cathode electrode 16. The upstream end of the cathode air supply line 38 connected to is connected. Further, the upstream end of the steam supply line 40 is connected to the off-gas outlet 16B of the cathode electrode 16, and the downstream end of the steam supply line 40 is connected to the steam inlet 18C of the reforming flow path 18. As a result, the cathode off-gas containing the water vapor generated at the cathode electrode 16 and the oxygen not consumed at the cathode electrode 16 is used for the steam reforming reaction in the reforming channel 18.

  Further, the fuel cell system 11 includes a cooling air pump 42 for supplying cooling air to the fuel cell 12, and the discharge part of the cooling air pump 42 has a refrigerant flow path ( It is connected to the upstream end of the cooling air line 44 connected to the inlet 12A (not shown). The refrigerant flow path outlet 12 </ b> B is connected to the upstream end of the combustion support gas supply line 46. The combustion support gas supply line 46 is connected to the combustion support gas inlet 20 </ b> C in the heating flow path 20, and supplies cooling off gas containing oxygen as the combustion support gas to the heating flow path 20. Thereby, in the heating flow path 20, the anode off gas from the anode off gas line 32 and the cooling off gas from the combustion support gas supply line 46 are brought into contact with the built-in oxidation catalyst 24 to cause catalytic combustion. .

(Configuration of heat exchange type reformer)
2 shows a schematic overall configuration of the heat exchange type reformer 10 in a perspective view, and FIG. 1 shows an overall schematic configuration of the heat exchange type reformer 10 in an exploded perspective view. ing. As shown in these drawings, the heat exchange type reformer 10 includes a laminated core 50 constituting the reforming flow path 18 and the heating flow path 20 and a case 52 containing the laminated core 50 as main components. Has been.

  As shown in a partially exploded view in FIG. 4, the laminated core 50 includes the reforming flow path 18 and the heating flow path 20 between the unit plate members 54 and 56 as a plurality of stacked unit members. , 56 plate portions 58 are formed as independent gas flow paths separated (adjacent) as partition walls. In this embodiment, the reforming flow path 18 and the heating flow path 20 are alternately arranged in the stacking direction (thickness direction of the plate portion 58), and are adjacent to each other via the plate portion 58. This will be specifically described below. In the following description, the gas flow direction of the reforming flow path 18 is indicated by an arrow R, and the gas flow direction of the heating flow path 20 is indicated by an arrow C.

  The plate portions 58 of the unit plate members 54 and 56 are formed in a substantially cross-shaped flat plate shape in plan view, and a square portion in plan view which is a central portion (cross portion) is formed with the heat exchange flow path forming portion 58A. Has been. Further, the upstream side of each plate portion 58 in the direction of arrow R with respect to the heat exchange flow path forming portion 58A is the raw material inlet flow path forming portion 58B as the first inlet flow path forming portion, and the arrow R with respect to the heat exchange flow path forming portion 58A. The downstream side in the direction is the reformed gas outlet channel forming part 58C as the first outlet channel forming part, and the upstream side in the arrow C direction with respect to the heat exchange channel forming part 58A is the second inlet channel forming part. The downstream side in the direction of the arrow C with respect to the fuel inlet channel forming part 58D and the heat exchange channel forming part 58A is a combustion exhaust gas outlet channel forming part 58E as a second outlet channel forming part.

  Each of the unit plate members 54 and 56 includes an outer wall 60 erected from the periphery of the plate portion 58 on the side where the reforming flow path 18 is formed. The outer wall 60 is erected from the entire circumference of the plate portion 58 except for the upstream and downstream ends in the arrow R direction and the arrow C direction. Further, each unit plate member 54 includes a standing wall 62 that stands from the boundary between the fuel inlet channel forming part 58D, the combustion exhaust gas outlet channel forming part 58E, and the heat exchange channel forming part 58A and continues to the outer wall 60. Each unit plate member 56 is erected from the boundary between the raw material inlet channel forming part 58B, the reformed gas outlet channel forming part 58C and the heat exchange channel forming part 58A and is connected to the outer wall 60. It has.

  Thereby, each unit plate member 54 is a flat reforming flow in which only the gas flow in the direction of arrow R (from the upstream side to the downstream side) is allowed on the standing side of the outer wall 60 and the standing wall 62 with respect to the plate portion 58. Each unit plate member 56 allows only a gas flow in the direction of arrow C (from the upstream side to the downstream side) on the side where the outer wall 60 and the standing wall 62 stand with respect to the plate portion 58. The flat heating flow path 20 is configured.

  The upstream side open end and the downstream side open end in the direction of arrow R of the portion formed between each unit plate member 54 and the unit plate member 56 in the reforming flow path 18 are the reforming side core inlet 50A and the reforming side core, respectively. It is called outlet 50B, and the upstream side open end and the downstream side open end in the direction of arrow C of the portion of each heating plate 20 between each unit plate member 56 and unit plate member 54 are the combustion side core inlet 50C and combustion. This is the side core outlet 50D. The standing wall 62 may be provided at the end or the middle of the fuel inlet channel forming portion 58D and the combustion exhaust gas outlet channel forming portion 58E in the direction of arrow C, and the standing wall 64 is formed of the raw material inlet channel forming portion 58B, The reformed gas outlet flow path forming portion 58C may be provided at the end in the arrow R direction or in the middle.

  Furthermore, each unit plate member 54 is provided with a plurality of partition walls 66 that are erected on the erected side of the outer wall 60 and the erected wall 62 at the same height as these and extend along the arrow R direction. Thereby, the reforming flow path 18 in the laminated core 50 is divided (divided) into a plurality of divided flow paths 65 parallel to each other. Similarly, each unit plate member 56 is provided with a plurality of partition walls 68 which are erected on the erected side of the outer wall 60 and the erected wall 64 at the same height as these and extend along the arrow C direction. Thereby, the heating flow path 20 in the laminated core 50 is divided (partitioned) into a plurality of divided flow paths 67 parallel to each other.

  The unit plate members 54 and 56 described above are formed in the same shape (in a common mold) with a metal material such as stainless steel, for example. It is set as the structure which has a function.

  And as above-mentioned, the lamination | stacking core 50 laminates | stacks the unit plate member 54 and each unit plate member 56, and joins them, and the gas flow direction (arrow R direction) and heating flow of the reforming flow path 18 are carried out. A cross-flow type heat exchange reforming section in which the gas flow direction (direction of arrow C) of the passage 20 is orthogonal in a plan view is configured. As shown in FIG. 1, in this embodiment, the laminated core 50 is formed by laminating a flat plate portion 58 (cover) on which the outer wall 60 or the like is not erected on the uppermost portion, so that the reforming channel 18 is formed. Closed.

  As shown in FIG. 1, the laminated core 50 has a heat exchange type reforming part 70 that is a laminated part of the heat exchange flow path forming part 58 </ b> A and each reforming core inlet 50 </ b> A at the upstream end in the arrow R direction. Stacking of the reforming-side introduction channel portion 72, which is a stacking portion of the raw material inlet channel forming portion 58B, and the reformed gas outlet channel forming portion 58C in which each reforming-side core outlet 50B opens at the downstream end in the arrow R direction. A reforming side introduction flow path portion 74 that is a stacked portion of the reforming side outlet flow path portion 74 that is a portion, and a fuel inlet flow path forming portion 58D in which each combustion side core inlet 50C opens at the upstream end in the direction of arrow C. The reforming-side outlet passage portion 78, which is a laminated portion of the combustion exhaust gas outlet passage-forming portion 58E in which each combustion-side core outlet 50D opens at the downstream end in the direction of the arrow C, is the main component in appearance. . The reforming catalyst 22 is supported on the heat exchange flow path forming portion 58A, the plurality of partition walls 66, and the pair of standing walls 62 constituting the heat exchange reforming portion 70 in each unit plate member 54, and each unit plate member 56 is supported. The oxidation catalyst 24 is supported on the heat exchange flow path forming portion 58A, the plurality of partition walls 68, and the pair of standing walls 64 constituting the heat exchange type reforming portion 70 in FIG.

  As shown in FIGS. 1 and 2, the case 52 is formed in a substantially cross shape in plan view, and accommodates the laminated core 50 as a whole. The case 52 includes a case main body 80 that mainly accommodates the laminated core 50 and a cover 82 that closes the opening end of the case main body 80 (the opening end of the laminated core 50 in the lamination direction). This will be specifically described below.

  The case main body 80 includes a bottom plate 80A having a shape corresponding to the plate portion 58 of the unit plate members 54 and 56, and a side wall 80B erected from the peripheral edge excluding the respective upstream and downstream ends in the arrow R direction and the arrow C direction of the bottom plate 80A. I have. Further, the cover 82 includes a top plate 82A having substantially the same shape as the bottom plate 80A, and a side wall 82B erected from the peripheral edge excluding the upstream and downstream ends in the arrow R direction and the arrow C direction of the top plate 82A. . The case 52 is configured to cover the laminated core 50 as a whole by joining the opening end of the side wall 80B and the opening end of the side wall 82B, which are brought into contact with each other, by brazing, welding, or the like.

  Therefore, the case 52 includes a heat exchange portion accommodating portion 84 for accommodating the heat exchange type reforming portion 70, a reforming inlet manifold connecting portion 86 as a cylindrical body for accommodating the reforming side introduction flow passage portion 72, A reforming outlet manifold connecting portion 88 as a cylindrical body that accommodates the reforming side outlet flow passage portion 74, a combustion inlet manifold connecting portion 90 as a cylindrical body that accommodates the reforming side introduction passage portion 76, and a modification. A combustion outlet manifold connecting portion 92 as a cylindrical body that accommodates the material-side outlet flow passage portion 78 is integrally formed.

  Further, in the case 52, a reforming inlet extending from the reforming inlet manifold connecting portion 86 and forming a collecting space communicating with each reforming core inlet 50A on the upstream side in the arrow R direction with respect to the reforming core inlet 50A. A manifold 94 and a reforming outlet manifold 96 that extends from the reforming outlet manifold connecting portion 88 and forms a collecting space that communicates with each reforming side core outlet 50B on the downstream side in the arrow R direction with respect to the reforming side core outlet 50B. A combustion inlet manifold 98 extending from the combustion inlet manifold connecting portion 90 to form a collective space communicating with each combustion side core inlet 50C on the upstream side in the direction of arrow C with respect to the combustion side core inlet 50C, and a combustion outlet manifold connecting portion 92 Combustion outlet manifold that extends from the combustion side core outlet 50D and forms a collecting space that communicates with each combustion side core outlet 50D downstream in the direction of arrow C with respect to the combustion side core outlet 50D And de 100 are integrally formed.

  A raw material inlet 18A and a steam inlet 18C are provided (connected) at the open end 94A of the reforming inlet manifold 94, and a reformed gas outlet 18B is provided at the open end 96A of the reforming outlet manifold 96, and a combustion inlet manifold 98 is provided. A plurality of fuel inlets 20 </ b> A and combustion gas inlets 20 </ b> C are provided at the opening end 98 </ b> A, and an exhaust gas outlet 20 </ b> B is provided at the opening end 100 </ b> A of the combustion outlet manifold 100.

  In the case 52 described above, the case main body 80 and the cover 82 are both made of a metal material such as stainless steel. The case 52 is joined to the laminated core 50 on the inner surface thereof. Specifically, as shown in FIG. 2, the case 52 has an inner surface of the reforming inlet manifold connecting portion 86 and the reforming side introduction flow path portion 72 over the entire circumference along the plane orthogonal to the arrow R direction. The reformed inlet side joined portion 102, the inner surface of the reformed outlet manifold connecting portion 88, and the reformed outlet outlet flow passage portion 74 are joined over the entire circumference along the plane orthogonal to the arrow R direction. The combustion outlet side joint portion 106, the inner surface of the combustion inlet manifold connecting portion 90, and the reforming side introduction flow passage portion 76 are joined over the entire circumference along the plane orthogonal to the arrow C direction. And the combustion outlet side joint portion 108 in which the inner surface of the combustion outlet manifold connecting portion 92 and the reforming side outlet flow passage portion 78 are joined over the entire circumference along the plane orthogonal to the arrow C direction. It is joined with.

  In this embodiment, each of the reforming inlet side joint portion 102, the reforming outlet side joint portion 104, the combustion inlet side joint portion 106, and the combustion outlet side joint portion 108 is formed to form a rectangular ring, and the case 52 is formed. The brazing material 110 (see FIG. 3) interposed (fitted) between the inner surface of the laminated core 50 and the outer surface of the laminated core 50 is melted and solidified. Thereby, between the laminated core 50 and the case 52, as shown in FIG. 3, the reforming inlet side joint portion 102, the reforming outlet side joint portion 104, the combustion inlet side joint portion 106, and the combustion outlet side joint portion. A gap G sealed with 108 (rectangular annular brazing material 110) is formed. In addition, the width (the dimension along each gas flow direction) W of the reforming inlet side joint 102, the reforming outlet side joint 104, the combustion inlet side joint 106, and the combustion outlet side joint 108 is the gap G. It is made large enough for the dimensions. The rectangular annular brazing material 110 has a lower melting point than the brazing material used for the laminated core 50 (joining of the unit plate members 54 and 56).

  Next, the operation of the first embodiment will be described.

  In the fuel cell system 11 having the above-described configuration, the hydrocarbon raw material, water vapor (cathode offgas) is supplied from the raw material supply line 28 to the reforming passage 18 of the heat exchange reformer 10 by the operation of the raw material pump 26 and the cathode air pump 36. Is introduced. In the reforming flow path 18 of the heat exchange type reformer 10, the steam reforming reaction is performed by bringing the hydrocarbon raw material introduced while receiving heat supply from the heating flow path 20 into contact with the reforming catalyst 22 together with the steam. The reforming reaction represented by the formulas (1) to (4) is performed, and a reformed gas containing hydrogen at a high concentration is generated.

  The reformed gas generated in the reforming channel 18 is supplied to the anode electrode 14 from the fuel inlet 14 </ b> A of the anode electrode 14. In the fuel cell 12, hydrogen in the reformed gas supplied to the anode electrode 14 is protonated, and this proton moves to the cathode electrode 16 through the electrolyte and is introduced into the cathode electrode 16. React with. As the protons move, electrons flow from the anode electrode 14 toward the cathode electrode through the external conductor, and power generation is performed.

  With this power generation, in the fuel cell 12, hydrogen in the reformed gas supplied to the anode electrode 14 and oxygen in the cathode air supplied to the cathode electrode 16 are consumed according to the power generation amount (load power consumption). The cathode electrode 16 generates water (water vapor at the operating temperature). The gas containing water vapor is pushed out from the cathode electrode 16 to the water vapor supply line 40 as the cathode off gas as described above, and is introduced into the reforming flow path 18 from the water vapor inlet 18C.

  On the other hand, the gas after the hydrogen in the reformed gas is consumed according to the amount of power generated along with the power generation is discharged from the anode electrode 14 as the anode off, and this anode off gas passes through the anode off gas line 32, It is supplied to the heating flow path 20 of the heat exchange type reformer 10. Further, the cooling flow gas after cooling the fuel cell 12 from the combustion support gas supply line 46 is supplied to the heating channel 20. In the heating flow path 20, catalytic combustion occurs when the combustible component in the anode off-gas, which is fuel, is brought into contact with the oxidation catalyst 24 together with the oxygen in the cooling off-gas together with the combustion support gas. The heat generated by this catalytic combustion is supplied to the reforming flow path 18 via the plate portion 58. With this heat, the reforming flow path 18 maintains the reforming reaction, which is an endothermic reaction, and maintains the operating temperature (reformed gas temperature) at a temperature necessary for the reforming reaction.

  As described above, in the fuel cell system 11, the hydrocarbon raw material is supplied to the heat exchange type reformer 10, and each exhaust gas of the fuel cell 12 (cathode off-gas containing water vapor, anode off-gas containing combustible components, cooling containing oxygen). The operation of the heat exchange reformer 10 that generates hydrogen to be supplied to the fuel cell 12 is maintained by effectively using off gas).

  In assembling the heat exchange type reformer 10, a large number of unit plate members 54, 56 are alternately stacked so that the gas flow directions (longitudinal directions of the partition walls 66, 68) are orthogonal to each other, and the outer walls 60 (standing walls). 62, 64, partition walls 66, 68) are joined (sealed) to the adjacent plate portion 58 by brazing, and the laminated core 50 is assembled. This brazing is performed using a brazing material having a relatively high melting point (having a melting point equal to or higher than the operating temperature of the heat exchange reformer 10 described above). In the laminated core 50, a catalyst carrier is introduced into each reforming channel 18 (a plurality of divided channels 65) and a heating channel 20 (a plurality of divided channels 67), and the reforming catalyst 22, An oxidation catalyst 24 is supported.

  Next, the rectangular annular brazing material 110 is fitted into the reforming-side introduction channel portion 72, the reforming-side introduction channel portion 74, the reforming-side introduction channel portion 76, and the reforming-side introduction channel portion 78 of the laminated core 50. In this state, the laminated core 50 is inserted into the case body 80. Further, a cover 82 is joined to the case body 80 to form a case 52 that houses the laminated core 50. The case 52 containing the laminated core 50 is passed through a melting furnace to melt the rectangular annular brazing material 110, and then the case 52 containing the laminated core 50 is cooled to solidify the rectangular annular brazing material 110. Accordingly, the heat exchange type reformer in which the laminated core 50 and the case 52 are joined at the reforming inlet side joint 102, the reforming outlet side joint 104, the combustion inlet side joint 106, and the combustion outlet side joint 108. 10 is obtained.

  Here, in the heat exchange type reformer 10, the reforming side introduction flow path in which the inner surface of the reforming inlet manifold connecting portion 86 formed in a rectangular cylinder shape is inserted into the reforming inlet manifold connecting portion 86. Since the reforming inlet side joining portion 102 is joined to the outer periphery of the portion 72, a sufficient joining area between the reforming inlet manifold connecting portion 86 and the reforming side introduction flow path portion 72, that is, a sealing area can be secured. it can. Since the reforming inlet manifold 94 is integrally formed with the reforming inlet manifold connecting portion 86, the reforming inlet manifold 94 communicating with a large number of reforming side core inlets 50A has a high gas sealing property. However, the configuration provided was realized.

  Similarly, a reforming outlet manifold 96 communicating with a number of reforming side core outlets 50B, a combustion inlet manifold 98 communicating with a number of combustion side core inlets 50C, and a combustion outlet manifold communicating with a number of combustion side core outlets 50D. The structure which provided 100, ensuring high gas-seal property was implement | achieved.

  This point will be further described in comparison with a comparative example. In the heat exchange type reformer 200 according to the comparative example shown in FIG. 9, one of the rectangular cylindrical manifold members 202 is formed on the opening end surface of the reforming side core inlet 50 </ b> A in the reforming side introduction flow path portion 72 of the laminated core 50. The side opening ends are butted together, and the butted portion B is joined by brazing. In this configuration, the manifold member 202 and the uppermost lower plate portion 58 can be joined relatively well, but the end surface of the portion formed by stacking a large number of outer walls 60 is connected to the manifold member 202. It is difficult to manage the clearance (smoothness of the joint), that is, to secure the sealing performance by brazing. Further, an oxide film is formed on the opening end surface of the reforming-side core inlet 50A by brazing at the time of assembling the laminated core 50, and an acute angle existing at the lamination boundary between the unit plate member 54 and the unit plate member 56 is formed. There is a concern that the diffusion of the brazing material into the recess is not sufficiently performed, and a void (nest) is formed in the brazed joint. On the other hand, since the joining area is limited by the thickness of the plate portion 58 and the outer wall 60 at the opening end face of the reforming side core inlet 50A, a joining area sufficient to ensure a sealing property even when a gap is formed is obtained. Is difficult. Moreover, it is difficult to remove the oxide film.

  On the other hand, in the heat exchange type reformer 10, the inner surface of the reforming inlet manifold connecting portion 86 is joined to the outer periphery of the reforming side introduction flow passage portion 72 over the entire circumference. W can be set in the gas flow direction, and a sufficient bonding area can be ensured. Thereby, gas leakage from between the reforming inlet manifold connecting portion 86 provided with the reforming inlet manifold 94 and the laminated core 50 is prevented. Although explanation is omitted, gas leakage from between the manifolds 96, 98 and 100 is prevented in the same manner.

  Moreover, in the heat exchange type reformer 10, the reforming inlet manifold connecting portion 86, the reforming outlet manifold connecting portion 88, the combustion inlet manifold connecting portion 90, and the combustion outlet manifold connecting portion 92 are integrated with the heat exchanging portion accommodating portion 84. Since the case 52 that is formed and covers the laminated core 50 as a whole is configured, gas leakage to the outside from the heat exchange reforming section 70 having the most severe thermal history in the laminated core 50 (heat exchange reformer 10). Is prevented. That is, even if a gas leak occurs from the heat exchange reforming unit 70, the gas enters the gap G, which is a space sealed by the joints 102, 104, 106, and 108 between the laminated core 50 and the case 52. It is held and is prevented from leaking out of the case 52.

  As described above, in the heat exchange type reformer 10 according to the first embodiment, it is possible to effectively prevent gas leakage via the stacking boundary in the stacked core 50 in which the plurality of unit plate members 54 and 56 are stacked. .

  Further, in the heat exchange type reformer 10, since the manifolds 94, 96, 98, 100 are formed integrally with the case 52, the gas sealability is good with a simple structure with a small number of parts and joining man-hours. A configuration with a manifold was realized.

  Next, another embodiment of the present invention will be described. Parts and portions that are basically the same as those in the first embodiment or the previous configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and the description thereof is omitted. Sometimes omitted.

(Second Embodiment)
FIG. 6 is a perspective view corresponding to FIG. 2 showing a heat exchange type reformer 120 according to the second embodiment of the present invention. As shown in this figure, the heat exchange type reformer 120 is the first in that a partition joint 122 that joins the laminated core 50 and the case 52 so as to partition the gap G into a plurality of spaces is formed. This is different from the heat exchange reformer 10 according to the first embodiment.

  In this embodiment, the partition joint portion 122 has an entire circumference between the inner surface of the reforming inlet manifold connecting portion 86 and the outer periphery of the reforming side introduction flow passage portion 72 on the downstream side in the arrow R direction with respect to the reforming inlet side joint portion 102. The reforming inlet side section joining portion 124 and the reforming outlet manifold connecting portion 88 on the upstream side in the direction of the arrow R with respect to the reforming outlet side joining portion 104 and the outer periphery of the reforming side outlet passage portion 74. And the reforming outlet side partition joint portion 126 joined to the entire circumference, the inner surface of the combustion inlet manifold connecting portion 90 and the reforming side introduction flow passage portion 76 on the downstream side in the arrow C direction with respect to the combustion inlet side joint portion 106. The combustion inlet side partition joint portion 128 joined to the outer periphery of the combustion inlet side, the inner surface of the combustion outlet manifold connecting portion 92 and the reforming side outlet flow passage portion on the upstream side in the arrow C direction with respect to the combustion outlet side joint portion 108. It touches the outer circumference of 78 over the whole circumference It is configured to include a combustion outlet-side partition joint 130 described.

  As a result, as shown in FIG. 7, the gap G is divided into an inner gap G1 sealed by the partition joints 124, 126, 128, and 130 and four outer gaps G2 positioned outside the inner gap G1. It is partitioned. Further, in this embodiment, the partition joint portion 122 is connected to the reforming side outlet channel portion 74 and the reforming side outlet channel from the corners of the reforming side inlet channel portion 72 and the reforming side inlet channel portion 76. Diagonal partition joint part 132 which joined laminated core 50 and case 52 over the perimeter along each crossing plane of arrow R and arrow C so that a corner with part 78 may be bridged along a diagonal line. Is included. By this diagonal partition joint portion 132, the inner gap G1 is partitioned into a first inner gap G1A and a second inner gap G1B.

  Other configurations of the heat exchange reformer 120 according to the second embodiment are the same as the corresponding configurations of the heat exchange reformer 10.

  Therefore, in 120 which concerns on 2nd Embodiment, the effect similar to the heat exchange reformer 10 can be acquired along the effect | action similar to the heat exchange reformer 10. FIG. In addition, since the heat exchanger reformer 120 is provided with the partition joint 122, in other words, the joint structure between the laminated core 50 and the case 52 is multi-layered. Gas leak is prevented more effectively.

  That is, as described above, even if the gas leaked from the heat exchange reforming part 70 with the most intense heat history into the inner gap G1 leaks at the reforming inlet side section junction part 124 or the like and leaks into the outer gap G2, Furthermore, it cannot leak to the outside of the case 52 without passing through the seal (the reforming inlet side joint 102 or the like) of the inner gap G1. Thus, since the heat exchange type reformer 120 forms a multi-stage seal structure with the multi-layered joint, the overall sealing performance is significantly improved. Moreover, in the heat exchange type | mold reformer 120, since the division junction part 122 functions as a reinforcement rib, the whole rigidity is improving. In particular, the reinforcement effect by the diagonal division joint part 132 is large. Thereby, the deformation | transformation of the lamination | stacking boundary in the heat exchange type modification | reformation part 70 (lamination | stacking core 50) is suppressed, and gas sealing performance becomes still better.

(Third embodiment)
FIG. 8 shows a heat exchange type reformer 150 according to a third embodiment of the present invention in a perspective view corresponding to FIG. As shown in this figure, the heat exchange type reformer 150 includes a case 152 in which each manifold 94, 96, 98, 102 is not formed instead of the case 52, and a manifold member which is a separate member in the case 152. It is different from the heat exchange reformer 10 according to the first embodiment in that each manifold 94, 96, 98, 102 is configured by joining 154.

  The case 152 includes an upstream end 86A of the reforming inlet manifold connecting portion 86, a downstream end 88A of the reforming outlet manifold connecting portion 88, an upstream end 90A of the combustion inlet manifold connecting portion 90, and a downstream end 92A of the combustion outlet manifold connecting portion 92. Each is a joint with the manifold member 154. Each manifold member 154 has a rectangular cylindrical shape corresponding to the peripheral shape of the joint portion, and the corresponding upstream ends 86A and 90A and downstream end 88A and 92A are joined by brazing. Yes. Thereby, each manifold 94, 96, 98, 102 is comprised.

  Other configurations of the heat exchange reformer 150 according to the third embodiment are the same as the corresponding configurations of the heat exchange reformer 10.

  Therefore, in 150 which concerns on 3rd Embodiment, the effect similar to the heat exchange reformer 10 can be acquired along the effect | action similar to the heat exchange reformer 10. FIG. Further, in the heat exchange type reformer 150, each manifold 94, 96, 98, 102 is configured by joining a manifold member 154, which is a separate member from the case 152, to the case 152, so that the degree of design freedom is increased. high. In other words, the manifolds 94, 96, 98, and 102 are not limited by the size and shape of the case 152, and the opening ends 94A, 96A, 98A, and 100A have a rectangular shape. The supply line 28, the reformed gas supply line 30, the anode off-gas line 32, the exhaust gas line 34, the water vapor supply line 40, and the combustion support gas supply line 46) can be used.

  In the heat exchange type reformer 150, the manifold member 154 is joined to the case 152, so that the manifold member 202 is joined directly to the opening end surface of the laminated core 50, as in the heat exchange type reformer 200. The manifolds 94, 96, 98, and 102 can be provided while ensuring gas sealing properties without causing problems in the smoothness of the joint and the oxide film.

  In each of the above-described embodiments, an example in which the laminated core 50 is configured by brazing the unit plate members 54 and 56 has been described. However, the present invention is not limited to this, and for example, each unit in a laminated state The plate members 54 and 56 may be joined by diffusion joining.

  Further, in each of the above-described embodiments, an example in which the laminated core 50 configures a cross-flow type heat exchange reforming unit has been described. However, the present invention is not limited to this, and for example, each flow path forming unit 58B ~ As a configuration in which the heat exchange reforming unit 70 in which the heat exchange flow path forming units 58A are stacked serves as a parallel flow type heat exchange unit by providing the 58E inclined to a different side with respect to the heat exchange flow channel forming unit 58A. Also good. Moreover, although the laminated core 50 showed the example by which the unit plate members 54 and 56 are laminated | stacked alternately (the reforming flow path 18 and the heating flow path 20 are formed alternately), this invention is not limited to this, For example, the unit plate members 54 and 56 are stacked so that the unit in which the unit plate member 54 is sandwiched between the unit plate members 56 is repeated (so that the two heating channels 20 are formed between the reforming channels 18). You may do it.

  Furthermore, in each of the above-described embodiments, an example in which the cases 52 and 152 are configured by joining the case main body 80 and the cover 82 has been described. However, the present invention is not limited to this, and is formed, for example, vertically symmetrical. Cases 52 and 152 may be formed by joining half cases.

  Furthermore, in each of the above-described embodiments, the example in which the manifold connecting portions 86, 88, 90, and 92 constitute the cases 52 and 152 has been described. However, the present invention is not limited to this, and the manifold connecting portions 86 and 88 are not limited thereto. , 90 and 92 may be independent members (tubular bodies).

  Further, in each of the above embodiments, the heat exchange reformer 10 and the heat exchange reformers 120 and 150 applied to the fuel cell system 11 are exemplified, but the present invention is not limited to this, and the heat exchange type The structure of the reformer 10 or the like can be applied to any application. For example, the reformer 10 may be a device that supplies hydrogen to a hydrogen engine (internal combustion engine), and the heating channel 20 is configured to receive fuel from outside the system. There may be.

1 is an exploded perspective view of a heat exchange type reformer according to a first embodiment of the present invention. 1 is a perspective view showing an overall configuration of a heat exchange type reformer according to a first embodiment of the present invention. It is a plane sectional view of the heat exchange type reformer concerning a 1st embodiment of the present invention. It is a disassembled perspective view of the lamination | stacking core which comprises the heat exchange type | mold reformer which concerns on the 1st Embodiment of this invention. 1 is a schematic system flow diagram of a fuel cell system to which a reformer according to a first embodiment of the present invention is applied. It is a perspective view which shows the whole structure of the heat exchange type | mold reformer which concerns on the 2nd Embodiment of this invention. It is a plane sectional view of the heat exchange type reformer concerning a 2nd embodiment of the present invention. It is a perspective view which shows the whole structure of the heat exchange type | mold reformer which concerns on the 3rd Embodiment of this invention. It is a perspective view of the heat exchange type reformer concerning a comparative example with an embodiment of the present invention.

Explanation of symbols

10 Heat exchange type reformer (heat exchanger)
18 reforming channel (first heat exchange channel)
20 Heating channel (second heat exchange channel)
50 laminated core 52 case 54/56 unit plate member (unit member)
58 Plate part (unit member)
58A Heat exchange channel forming part 58B Raw material inlet channel forming part (first inlet channel forming part)
58C reformed gas outlet channel forming part (first outlet channel forming part)
58D Fuel inlet channel forming part (second inlet channel forming part)
58E Combustion exhaust gas outlet flow path forming part (second outlet flow path forming part)
65 Divided channel (first channel)
67 Divided flow path (second flow path)
70 Heat exchange type reforming part (stacked part of heat exchange flow path forming part)
72 reforming side introduction flow path part (lamination part of first inlet flow path forming part)
74 Reform-side outlet channel part (lamination part of first outlet channel forming part)
76 Reform-side introduction flow path section (stacked portion of second inlet flow path forming section)
78 reforming-side outlet channel part (stacked portion of second outlet channel forming part)
84 Heat exchange section accommodating section 86 Reformation inlet manifold connection section (tubular body)
88 Reformation outlet manifold connection (tubular body)
90 Combustion inlet manifold connection (tubular)
92 Combustion outlet manifold connection (tubular)
94 Reformation inlet manifold (manifold section)
96 Reformation outlet manifold (manifold section)
98 Combustion inlet manifold (manifold part)
100 Combustion outlet manifold (manifold part)
120 ・ 150 Heat exchange type reformer (heat exchanger)
150 heat exchange type reformer 152 case 154 manifold member

Claims (7)

The first inlet channel forming unit, the first outlet channel forming unit, the second inlet channel forming unit, and the second outlet channel forming unit are independently extended from the heat exchange channel forming unit along the same plane. Laminating the plurality of unit members thus formed, the first heat exchange channel that causes the first heat exchange medium flowing from the first inlet channel forming part to flow out to the first outlet channel forming part side, and A second heat exchange channel that causes the second heat exchange medium flowing in from the second inlet channel forming part to flow out toward the second outlet channel forming part is adjacent to the unit member via the heat exchange channel forming part of the unit member. A laminated core configured to include a plurality of heat exchange units,
Formed in a cylindrical shape, a laminated portion of the first inlet flow passage forming portion, a laminated portion of the first outlet flow passage forming portion, a laminated portion of the second inlet flow passage forming portion, and a second outlet flow passage formation in the laminated core A cylindrical body that is inserted over the entire circumference of the laminated part in which at least one of the laminated parts of the part is inserted and the inner surface is inserted;
Equipped with a,
The laminated portion of the first inlet channel forming portion, the laminated portion of the first outlet channel forming portion, the laminated portion of the second inlet channel forming portion, and the laminated portion of the second outlet channel forming portion in the laminated core, respectively. The four cylindrical bodies that are accommodated and joined to the laminated portion accommodated on the inner surface are integrally provided in a heat exchange portion accommodating portion that accommodates the laminated portion of the heat exchange flow path forming portion, respectively, The heat exchanger which comprises the case which covers a laminated core as a whole from the outside .   The cylindrical body forms the heat exchange channel with respect to an opening end of the first inlet channel forming unit, the first outlet channel forming unit, the second inlet channel forming unit, or the second outlet channel forming unit. The heat exchanger according to claim 1, further comprising a manifold portion protruding to the opposite side of the portion. The first inlet channel forming unit, the first outlet channel forming unit, the second inlet channel forming unit, and the second outlet channel forming unit are independently extended from the heat exchange channel forming unit along the same plane. Laminating the plurality of unit members thus formed, the first heat exchange channel that causes the first heat exchange medium flowing from the first inlet channel forming part to flow out to the first outlet channel forming part side, and A second heat exchange channel that causes the second heat exchange medium flowing in from the second inlet channel forming part to flow out toward the second outlet channel forming part is adjacent to the unit member via the heat exchange channel forming part of the unit member. A laminated core configured to include a plurality of heat exchange units,
A case that is formed corresponding to the outer shape of the laminated core, accommodates the laminated core, and is joined to the laminated core at a part of the inner surface over the entire circumference along the intersection with the flow direction of the heat exchange medium; ,
With
In the case, the inner surface of each laminated part of the first inlet channel forming portion, the first outlet channel forming portion, the second inlet channel forming portion, and the second outlet channel forming portion of the laminated core is heated. The heat exchanger joined over the perimeter along the crossing surface with the flow direction of the exchange medium . The case extends over the entire circumference of each of the laminated portions of the first inlet channel forming part, the first outlet channel forming part, the second inlet channel forming part, and the second outlet channel forming part of the laminated core. The inner surface is joined to the said laminated core over the perimeter along the cross | intersection with the flow direction of a heat exchange medium by the said heat exchange flow path formation part side with respect to the four joined parts joined. Heat exchanger. The case includes the heat exchange flow path forming portion with respect to each open end of the first inlet flow path forming portion, the first outlet flow path forming portion, the second inlet flow path forming portion, and the second outlet flow path forming portion. The heat exchanger according to claim 3 or 4, wherein a manifold portion that protrudes and opens to the opposite side of said one is integrally formed . A manifold joined to the case and forming a space communicating with the opening of the first inlet channel forming part, the first outlet channel forming part, the second inlet channel forming part, or the second outlet channel forming part. The heat exchanger according to any one of claims 1 to 5, further comprising a member . A reforming channel for performing a reforming reaction for generating a hydrogen-containing gas from a reforming material introduced from the first inlet channel forming unit side is the first heat exchange channel, and the second inlet flow The heating flow path for supplying the heat for advancing the reforming reaction to the reforming flow path by burning the fuel supplied from the path forming portion side is defined as the second heat exchange flow path. A heat exchange type reformer to which the heat exchanger according to claim 6 is applied .

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