JP2017110854A - Plate structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress positional deviation of a connection position while securing a proper thickness of a brazing material.SOLUTION: A plate structure includes: a planar first metal member 32; a second metal member 34 that has a first convex part 44 contacting with a single-sided surface of the first metal member 32 and forming a space between itself and the first metal member 32; a heat exchange body 14 in which the first metal members and the second metal members are alternately laminated; a composite brazing material 52 that is composed of connection brazing material and metal powder, and configured to connect the first metal member 32 and the second metal member 34; and a first space securing part 48 that is provided at an edge part of any one of the first metal member 32 and the second metal member 34, and contacts with the other one of the first metal member 32 and the second metal member 34 to keep an interval between the first metal member 32 and the second metal member 34.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a plate structure configured by brazing a plurality of stacked metal plates.

  In the plate structure of Patent Document 1, a powder aggregate of metal powder is arranged in a predetermined joint in the arranging step, and the joining brazing material is sucked between the metal powders in the joining step, and the metal powder joining brazing material The binder contained in is evaporated. The joining brazing material is impregnated into the metal powder, and the joining brazing material is eutectic on the surface of the metal powder, whereby a composite brazing material is formed. When a pair of metal plates are bonded, the metal powder constituting the powder aggregate exerts a column effect that becomes a column, so that the pair of metal plates are bonded at a predetermined bonding site by a composite brazing material. Can do.

  In the plate structure of the cited document 2, when the pair of metal plates are joined with the brazing material, the joining brazing material melted into the metal powder constituting the metal sheet is sucked. Here, since the metal powder which comprises a metal sheet material exhibits the support | pillar effect used as a support | pillar, when joining a pair of metal plate, the appropriate thickness of a brazing material is securable. Since the metal sheet material is disposed, the brazing operation can be facilitated. That is, in the plate structure of the cited document 2, when joining a pair of metal plates, the brazing operation can be facilitated while ensuring an appropriate thickness of the brazing material.

JP 2015-110236 A JP 2013-111622 A

  However, in the conventional plate structure, when the space is provided between the metal plates, there is no assistance for maintaining the size of the space, that is, the space between the metal plate and the metal plate in the space portion. For this reason, when a plurality of metal plates are stacked, the metal plate corresponding to the space portion is deformed, and it becomes difficult to manage the dimension in the stacking direction of the plate structure.

  An object of this invention is to provide the plate structure which becomes possible [managing the dimension of a lamination direction], when laminating | stacking a some metal plate so that it may have a space.

  The plate structure according to claim 1 is a second metal having a flat plate-like first metal member and a convex portion that contacts one surface of the first metal member and forms a space between the first metal member. A composite brazing material comprising a laminate in which members are alternately laminated, a joining brazing material and a metal powder, and joining the first metal member and the second metal member; The first metal member that is provided at one of the edges of the metal member and the second metal member and contacts the other of the first metal member and the second metal member and corresponds to the space And a first space securing part that keeps a distance between the second metal member.

  The plate structure according to claim 1 includes a flat plate-like first metal member, and a second metal member having a convex portion that contacts one side of the first metal member and forms a space between the first metal member and The first metal member and the second metal member constituting the laminated body are joined by a composite brazing material comprising a joining brazing material and a metal powder. Yes.

  Compared to the case where the composite brazing material is joined only with the brazing material without using metal powder because the metal powder part plays a role of a support (spacer) when joining the first metal member and the second metal member. In addition, an appropriate thickness of the brazing material is ensured.

  Further, in the plate structure according to claim 1, a space comes into contact with either one of the first metal member and the second metal member at the edge of one of the first metal member and the second metal member. The 1st space ensuring part which keeps the space | interval of the 1st metal member and 2nd metal member corresponding to is provided. For this reason, compared with the case where the 1st space ensuring part is not provided, the deformation | transformation (bending) vicinity of the edge part of the laminated | stacked 1st metal member and 2nd metal member is suppressed, and the lamination direction of plate structure Can manage the dimensions.

  According to a second aspect of the present invention, in the plate structure according to the first aspect, the first space securing portion is integrally formed from one edge of the first metal member or the second metal member. It is a protruding part.

  In the plate structure according to claim 2, the first space securing portion is constituted by a portion integrally projecting from either one of the first metal member and the second metal member. For this reason, it is not necessary to prepare the first space securing part as a separate part, and the number of parts can be minimized.

  The invention according to claim 3 is the plate structure according to claim 1 or 2, wherein the height of the first space securing portion is H, the height of the convex portion is h, and the height of the composite brazing material is high. When the thickness is t, H ≦ h + t.

  When the height of the first space securing portion is H, the height of the convex portion is h, and the height of the composite brazing material is t, H ≦ h + t, so that the first brazing member and the first metal member Two metal members can be joined. When H> h + t, the composite brazing material does not contact the first metal member or the second metal member.

  According to a fourth aspect of the present invention, in the plate structure according to any one of the first to third aspects, the planar portion of either the first metal member or the second metal member includes: A second space securing portion is formed in contact with either one of the first metal member and the second metal member to keep a distance between the first metal member and the second metal member.

  The plate structure according to claim 4, wherein the first metal member and the second metal member are brought into contact with either one of the first metal member and the second metal member and the first metal member. A second space securing portion is provided to maintain a distance between the member and the second metal member. For this reason, compared with the case where the 2nd space securing part is not provided, the deformation | transformation (deflection) in the planar part of the laminated | stacked 1st metal member and a 2nd metal member is suppressed, and the lamination direction of a plate structure is suppressed. Dimension can be managed.

  According to the plate structure of the present invention, the dimension in the stacking direction of the stacked body in which the first metal members and the second metal members are alternately stacked can be managed.

It is a sectional side view of the heat exchanger which concerns on 1st Embodiment. (A) is a perspective view which shows the surface of a 1st metal member, (B) is the 2 (B) -2 (B) sectional view taken on the line of the 1st metal member shown to FIG. 2 (A). (A) is a perspective view which shows the back surface of a 1st metal member, (B) is the 3 (B) -3 (B) sectional view taken on the line of the 1st metal member shown to FIG. 3 (A). (A) is a perspective view which shows a 2nd metal member, (B) is a 4 (B) -4 (B) sectional view of the 2nd metal member shown to FIG. 4 (A). It is a perspective view which shows a 1st heat carrier inflow tube. (A) is a perspective view which shows the heat exchanger main body before brazing of the heat exchanger which concerns on 1st Embodiment, (B) is 6 (B) of the heat exchanger main body shown to FIG. 6 (A). It is -6 (B) sectional view taken on the line. (A) is a perspective view of the 2nd metal member which shows the 2nd bending part vicinity, (B) is a perspective view of the 2nd metal member which shows the 1st bending part vicinity. It is sectional drawing which shows the heat exchanger main body after brazing of the heat exchanger which concerns on 1st Embodiment. (A) is sectional drawing which shows the dimensional relationship of a 1st bending part, (B) It is sectional drawing which shows the dimensional relationship of a 2nd bending part. (A) is a perspective view which shows the 2nd metal member of the heat exchanger which concerns on 2nd Embodiment, (B) is a perspective view which shows the heat exchanger main body of the heat exchanger which concerns on 2nd Embodiment. is there. It is a sectional side view of the heat exchanger which concerns on 2nd Embodiment. (A) is a perspective view which shows the 2nd metal member of the heat exchanger which concerns on 3rd Embodiment, (B) is 12 (B) -12 (B of the 2nd metal member shown to FIG. 12 (A). FIG. It is a sectional side view which shows the heat exchanger which concerns on 3rd Embodiment. (A) is a perspective view which shows the back surface of the 1st metal member of the heat exchanger which concerns on 4th Embodiment, (B) is a perspective view which shows the surface of the 1st metal member shown to FIG. 14 (A). . It is a perspective view which shows the 2nd metal member of the heat exchanger which concerns on 4th Embodiment. It is a perspective view which shows the heat exchanger main body of the heat exchanger which concerns on 4th Embodiment. It is a sectional side view which shows the heat exchanger which concerns on 4th Embodiment. It is a perspective view which shows the heat exchanger main body of the heat exchanger which concerns on 5th Embodiment. It is a sectional side view which shows the heat exchanger which concerns on 5th Embodiment.

[First Embodiment]
An example of an embodiment according to the present invention will be described with reference to the drawings. Below, the manufacturing method of the heat exchanger 10 as an example of plate structure and the heat exchanger 10 is demonstrated.

(Heat exchanger)
As shown in FIG. 1, the heat exchanger 10 includes a housing 12, a heat exchanger body 14, a first heat medium inflow pipe 16, a first heat medium outflow pipe 18, a second heat medium inflow pipe 20, and a second heat exchanger. A heat medium outflow pipe 22 is included.

(Casing)
The housing 12 is a member that accommodates the heat exchanger main body 14 therein, and includes a main body 12A formed in a box shape (cuboid shape) having an opening on one side (left side in FIG. 1), and an opening of the main body 12A. And a lid member 12B having a rectangular plate shape to be closed.

  A hole 24 into which the first heat medium inflow pipe 16 is inserted is formed in the bottom plate portion 12Aa of the main body 12A. A hole 26 into which the second heat medium inflow pipe 20 is inserted is formed in one side plate portion 12Ab of the main body 12A, and a second heat medium outflow pipe 22 is inserted in the other side plate portion 12Ac of the main body 12A. A hole 28 is formed. On the other hand, a hole 30 into which the first heat medium outlet pipe 18 is inserted is formed in the lid member 12B.

(First heat medium inflow pipe, first heat medium outflow pipe)
The first heat medium inflow pipe 16 protrudes into the housing 12, and a flange 16B is formed at the end of the pipe part 16A. The first heat medium outlet pipe 18 protrudes into the housing 12, and a flange 18B is formed at the end of the pipe part 18A.

  The heat exchanger body 14 is configured by alternately laminating the first metal members 32 and the second metal members 34 and bonding them together. In the present embodiment, as shown in FIG. 1, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, the second metal member 34, and the first metal member 32. The second metal member 34, the first metal member 32, and the first heat medium outlet pipe 18 are laminated in this order, and each member is joined by a composite brazing material 52 described later.

(First metal member)
FIG. 2A shows a surface 32A of the first metal member 32 before being joined (brazed) to the second metal member 34. The first metal member 32 of the present embodiment is a metal plate made of stainless steel and a flat plate. The first metal member 32 is formed in a rectangular shape, and a rectangular hole 36 is formed in the center.

  As shown in FIGS. 2 (A) and 2 (B), a metal powder is formed on the surface 32A of the first metal member 32 in a sheet shape (band shape) having a constant thickness (height) and a constant width along the outer peripheral edge. A formed metal sheet material 38 (an example of an assembly of metal powders) is provided, and a brazing sheet material 40 formed in a sheet shape (band shape) with a certain height and a certain width is adjacent to the inside. Is provided.

  As shown in FIGS. 3A and 3B, a metal sheet material 38 is provided on the back surface 32B of the first metal member 32 along the inner peripheral edge of the rectangular hole 36, and on the outer side thereof. A brazing sheet material 40 is provided adjacently.

  Specifically, the metal sheet material 38 is mixed with a metal powder and a binder (for example, an organic solvent or an aqueous medium) for bonding the metal powders, and dried to obtain a thickness (for example, a thickness). 90 [μm]) It is a member made into a fixed sheet. The binder remaining in the metal sheet material 38 evaporates at a temperature equal to or lower than the temperature in the heating furnace (brazing temperature) in the joining process described later.

  As the metal powder of this embodiment, stainless steel powder having the same composition as the first metal member 32 and the second metal member 34 is used, and the brazing material is impregnated into the metal powder at the brazing temperature. Eutectic bonds are formed on the surface of the powder. In addition, as a metal powder, the powder of stainless steel with a particle size of 10-45 [micrometer] is used as an example.

  The brazing material has a lower melting point than the first metal member 32 and the second metal member 34 made of stainless steel, and further, eutectic bonding with the stainless steel of the first metal member 32 and the second metal member 34 is performed. What is possible is used. As the brazing material, for example, a Ni-based (nickel) brazing material, a Fe-based (iron) brazing material, an Ag-based (silver) brazing material, or a Ti-based (titanium) brazing material can be used. In this case, a Ni-based (nickel) brazing material is used as the brazing material.

  Then, in the joining step described later when the heat exchanger 10 is manufactured, the binder of the metal sheet material 38 evaporates, and the molten brazing material is impregnated into the metal powder so as to constitute the composite brazing material 52 described later. It has become.

  Accordingly, the composite brazing material 52 is formed by eutectic bonding of a brazing material, which is a Ni-based brazing material, to a metal powder, which is a powder of stainless steel, at a brazing temperature. Furthermore, in this composite brazing material 52, the volume ratio of the brazing material to the metal powder is, for example, 25% or more and 50% or less. This volume ratio can be obtained by calculating from the relationship between mass and true density.

(Second metal member)
As shown in FIGS. 4A and 4B, the second metal member 34 of the present embodiment is formed by pressing a metal plate made of stainless steel. The second metal member 34 has a flat portion 34A whose outer shape is rectangular, and is pushed out so that a concave space 42 is formed at the center of the flat portion 34A as shown in FIG. 4B. A first convex portion 44 is formed. The first convex portion 44 has a rectangular shape in plan view, and the concave space 42 has a rectangular parallelepiped shape. A rectangular hole 46 penetrating the top portion 44A in the thickness direction is formed at the center of the top portion 44A of the first convex portion 44. The rectangular hole 46 of the second metal member 34 has the same shape and size as the rectangular hole 36 of the first metal member 32.

  A first bent portion 48 is integrally formed at the central portion of the edge 34Aa and the edge 34Ab facing each other of the flat portion 34A. The first bent portion 48 is formed by bending a portion that protrudes integrally and rectangularly from the flat portion 34A in the protruding direction of the first convex portion 44 by press working.

  In addition, a second bent portion 50 that protrudes toward the concave space 42 is integrally formed at the edge of the rectangular hole 46 formed in the top portion 44 </ b> A of the first convex portion 44. The second bent portion 50 is formed by bending a portion that protrudes integrally and rectangularly from the top portion 44A toward the concave space 42 by press working.

(Manufacturing method of heat exchanger)
Below, the manufacturing method of the manufacturing method of the heat exchanger 10 is demonstrated. The manufacturing method of the heat exchanger 10 includes a preparation process, an arrangement process, a joining process, and a housing process described below.

(Preparation process)
In the preparation step, the main body 12A of the housing 12, the lid member 12B, the first heat medium inflow pipe 16, the first heat medium outflow pipe 18, the second heat medium inflow pipe 20, the second heat medium outflow pipe 22, a plurality of (this In the embodiment, four first metal members 32 and a plurality (three in the present embodiment) of second metal members 34 are prepared.

(Arrangement process)
As shown in FIGS. 2 and 3, the metal sheet material 38 and the brazing sheet material 40 are disposed on both surfaces of the first metal member 32.

  Further, as shown in FIG. 5, a metal sheet material 38 and a brazing sheet material 40 are annularly formed on the surface of the flange 16B of the first heat medium inflow pipe 16 opposite to the side on which the pipe portion 16A is formed. To place. In addition, although illustration is abbreviate | omitted, the metal sheet material 38 and the brazing sheet material 40 are annularly arrange | positioned also to the flange 18B of the 1st heat-medium outflow pipe | tube 18 similarly to the flange 16B of the 1st heat-medium inflow pipe | tube 16. To do.

  The placement work (placement operation) of the metal sheet material 38 and the brazing sheet material 40 is performed by an operator or an apparatus. In addition, the metal sheet material 38 and the brazing sheet material 40 may be disposed with a gap as long as the after-mentioned suction effect in which the molten brazing material is sucked into the metal powder is exhibited.

(Joining process)
In the joining step, as shown in FIGS. 6A and 6B, first, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, and the second metal member. 34, the first metal member 32, the second metal member 34, the first metal member 32, and the first heat medium outlet pipe 18 are laminated in this order.

  Next, the metal sheet material 38 and the brazing sheet material 40 of the flange 16 </ b> B of the first heat medium inflow pipe 16 are brought into contact with the center portion of the surface 32 </ b> A of the first metal member 32. At this time, the first heat medium inflow pipe 16 and the rectangular hole 36 of the first metal member 32 are communicated.

The first metal member 32 and the second metal member 34 are stacked as follows.
First, the first metal member 32 and the second metal member 34 are pressed against each other with the top portion 44A of the first protrusion 44 of the second metal member 34 facing the back surface 32B of the first metal member 32. Thereby, as shown in FIG. 6B, the metal sheet material 38 and the brazing sheet material 40 provided on the back surface 32 </ b> B of the first metal member 32 are the top portions of the first convex portions 44 of the second metal member 34. While contacting 44 </ b> A, as shown in FIG. 7B, the end of the first bent portion 48 of the second metal member 34 contacts the back surface 32 </ b> B of the first metal member 32.

  The surface of the second metal member 34 opposite to the side from which the first convex portion 44 of the flat portion 34A protrudes, and the first metal member 32 (second metal from the right in FIG. 6B). The first metal member 32 and the second metal member 34 are pressed against each other with the surface 32A of the member 32) facing each other. Accordingly, the metal sheet material 38 and the brazing sheet material 40 on the surface 32A of the first metal member 32 come into contact with the flat portion 34A of the second metal member 34, and as shown in FIG. An end portion of the second bent portion 50 provided on the first convex portion 44 of the metal member 34 contacts the surface 32 </ b> A of the first metal member 32.

  Finally, the flange 18B of the first heat medium outlet pipe 18 is brought into contact with the metal sheet material 38 and the brazed sheet material 40 provided on the back surface 32B of the leftmost first metal member 32 shown in FIG. 6B. Let

  The first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, and the first heat medium outflow pipe 18 are sandwiched between the metal sheet material 38 and the brazing sheet material 40. In this state, it is placed in a heating furnace (not shown) and the whole is heated to melt the brazing material. Regarding the temperature in the heating furnace, the Ni-based brazing material melts, but the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, and the first heat medium outflow pipe 18 do not melt. (For example, 1100 ° C.).

  In the joining step, as a result of laminating the respective members, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, the second metal member 34, the first metal member 32, the first It is sufficient that the two metal members 34, the first metal member 32, and the first heat medium outlet pipe 18 are stacked in this order. That is, the order of operations (operations) for stacking the members may not be the order described above.

  Thereby, the binder of the metal sheet material 38 evaporates and the brazing material melted in the metal powder constituting the metal sheet material 38 is sucked (suction effect). Then, the brazing material is impregnated into the metal powder, and the brazing material is eutectic bonded to the surface of the metal powder by this impregnation, whereby a composite brazing material 52 as shown in FIG. 8 is formed.

  Further, the brazing material impregnated with the metal powder diffuses at the bonding interface between the first metal member 32 and the second metal member 34 and eutectic bonds with the first metal member 32 and the second metal member 34. Then, by cooling the composite brazing material 52, the first metal member 32 and the second metal member 34 are joined (brazed) by the composite brazing material 52.

  Specifically, the flat portion 34A of the second metal member 34 and the surface 32A of the first metal member 32 are joined so that the opening of the concave space 42 of the second metal member 34 is closed by the first metal member 32. Is done. Thus, the opening of the concave space 42 of the second metal member 34 is closed by the first metal member 32 by joining the flat portion 34A of the second metal member 34 and the surface 32A of the first metal member 32. The Thereby, the heat exchanger body 14 having the concave space 42 as an internal space is formed.

  Further, by joining the first metal member 32 to the first convex portion 44 of the second metal member 34, the flat portion 34 </ b> A and the first metal member 32 are arranged around the outer periphery of the first convex portion 44. In the meantime, a rectangular frame-like frame space 43 is formed (see FIG. 1).

  In the state where the first metal member 32 and the second metal member 34 are joined, the thickness of the composite brazing material 52 is equal to the thickness of the metal sheet material 38 disposed on the first metal member 32 and the brazing. This is equivalent to the thickness of the sheet material 40. This is because the metal powder serves as a support (spacer), as will be described later.

(Containment process)
In the housing step, the first heat medium inflow pipe 16 and the first heat medium outflow pipe 18 are arranged so that the pipe portion 16A of the first heat medium inflow pipe 16 is inserted into the hole 24 of the main body 12A of the housing 12. The joined heat exchanger main body 14 is accommodated in the main body 12 </ b> A of the housing 12. Then, the heat exchanger 10 is manufactured by closing the lid member 12B so that the first heat medium outlet pipe 18 is inserted into the hole 30 of the lid member 12B. The main body 12A and the lid member 12B are joined by welding, for example. Alternatively, the main body 12A and the lid member 12B may be joined using the composite brazing material 52.

  Thereby, as shown in FIG. 1, the concave space 42 of the second metal member 34, the inside of the first heat medium inflow pipe 16, and the inside of the first heat medium outflow pipe 18 communicate with each other, and the heat exchanger body 14, a first circulation space 56 through which the first heat medium 54 (a low-density dot in FIG. 1) circulates is configured. As the first heat medium 54, for example, water can be used, but a liquid or gas other than water may be used.

  Inside the housing 12, outside the first metal member 32 and the second metal member 34, the first flow space 56 is partitioned by the first metal member 32 and the second metal member 34, and the second heat medium A second distribution space 60 is formed in which 58 (in FIG. 1, a high-density dot) circulates. As the second heat medium, for example, water can be used, but a liquid or gas other than water may be used.

The second heat medium 58 flowing through the outer second distribution space 60 is attached to the second heat medium inflow pipe 20 attached to one side plate portion 12Ab of the main body 12A and the other side plate portion 12Ac of the main body 12A. The second heat medium outflow pipe 22 is adapted to flow into and out of the housing 12.
In the heat exchanger 10 configured as described above, heat exchange is performed between the first heat medium 54 that flows through the first flow space 56 and the second heat medium 58 that flows through the second flow space 60.

(Operation and effect of this embodiment)
In this embodiment, as described above, the composite brazing material 52 is formed by impregnating the brazing material into the metal powder and eutectic bonding the brazing material to the surface of the metal powder in the joining step. Here, when the metal powder constituting the metal sheet material 38 joins the first metal member 32 and the second metal member 34, it plays the role of a support (spacer). For this reason, the composite brazing material 52 is not crushed, and the composite brazing material 52 maintains a state of maintaining an arbitrary thickness. Thus, in the present embodiment, it is possible to ensure an appropriate thickness of the brazing material, as compared to the case where the metal powder is used and only the brazing material is joined. Further, since the flat portion 34A of the second metal member 34 and the first metal member 32 that is a flat plate are joined, it is easy to manage the brazing thickness (joining interval).

  Further, in the present embodiment, the first bent portion 48 of the second metal member 34 is provided on the edge portion 34Aa and the edge portion 34Ab of the flat portion 34A of the second metal member 34, and the end of the first bent portion 48 is provided. The flat portion 34A of the second metal member 34 is deformed to the first metal member 32 side by the contact of the portion (tip) with the vicinity of the outer peripheral edge of the back surface 32B of the first metal member 32, and the first metal member It is possible to prevent the vicinity of the outer peripheral edge of 32 from being deformed toward the second metal member 34, and the distance between the outer peripheral edge of the second metal member 34 and the outer peripheral edge of the first metal member 32 (the thickness of the frame-shaped space 43). Narrowing is suppressed.

  Further, since the second bent portion 50 of the second metal member 34 is provided near the center of the top portion 44 </ b> A of the first convex portion 44, the end portion (tip) of the second bent portion 50 is the first metal member 32. By abutting on the surface 32A of the first metal member 32, it is possible to suppress the top portion 44A from being deformed to the first metal member 32 side and the vicinity of the center of the first metal member 32 from being deformed to the second metal member 34 side. It is suppressed that the space | interval (thickness of the concave space 42) of 44 A of top parts of the member 34 and the 1st metal member 32 becomes narrow.

  In this way, all the first metal members 32 and the second metal members 34 are laminated, and the end portions of the first bent portions 48 and the end portions of the second bent portions 50 of all the second metal members 34 are formed. By contacting the first metal member 32, the height dimension of the heat exchanger body 14 in the stacking direction can be maintained and managed.

  As shown in FIG. 9A, the height of the first bent portion 48 is H1, the height of the first convex portion 44 is h1, and the metal sheet material 38 provided on the back surface 32B of the upper first metal member 32. It is preferable that H1 ≦ h1 + t1 when the height of t1 is t1. When H1> h1 + t1, the metal sheet material 38 of the first metal member 32 does not contact the top 44A of the first convex portion 44 of the second metal member 34.

  Further, as shown in FIG. 9B, when the height of the second bent portion 50 is H2, and the height of the metal sheet material 38 provided on the surface 32A of the lower first metal member 32 is t2. In addition, it is preferable that H2 ≦ h1 + t2. When H2> h1 + t2, the metal sheet material 38 of the first metal member 32 does not come into contact with the flat portion 34A of the second metal member 34.

  In the present embodiment, since the first bent portion 48 and the second bent portion 50 are formed by a portion that integrally protrudes from the edge of the second metal member 34, the first bent portion 48 and the first bent portion 48 There is no need to prepare the two-folded portion 50 as a separate part, and the number of parts can be minimized.

[Second Embodiment]
Next, the heat exchanger 10 which concerns on the 2nd Embodiment of this invention is demonstrated according to FIG.10 and FIG.11. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.

  In the heat exchanger main body 14 of this embodiment, it replaces with the 2nd metal member 34 of 1st Embodiment, and the 2nd metal member 62 shown to FIG. 10 (A) is used. In the second metal member 62 of the present embodiment, a first convex portion 64 that is rectangular in plan view is formed in the center of the flat portion 62A, and is rectangular in plan view in the center of the top portion 64A of the first convex portion 64. The 2nd convex part 66 made into the shape is formed. A rectangular hole 68 is formed at the center of the top portion 66 </ b> A of the second convex portion 66, and a second bent portion 70 is formed at the edge of the rectangular hole 68. A first bent portion 72 is formed at the edge of each side of the flat portion 62 </ b> A of the second metal member 62.

  As shown in FIG. 10 (B) and FIG. 11, the heat exchanger body 14 of the present embodiment has a plurality of second metal members 62 and first metal members 32 laminated, as shown in FIG. The first bent portion 72 of the second metal member 62 contacts the back surface 32B of one of the first metal members 32, and the second bent portion 70 of the second metal member 62 contacts the surface 32A of the other first metal member 32. It is in contact.

As shown in FIG. 11, the flange 18 </ b> B of the first heat medium outlet pipe 18 is joined to the top 66 </ b> A of the second protrusion 66 in the leftmost second metal member 62 in the drawing.
Also in this embodiment, the heat exchanger 10 is manufactured through a preparation process, an arrangement process, a joining process, and an accommodation process, as in the first embodiment.

  In the present embodiment, eight first metal members 32 and eight second metal members 62 are alternately stacked, but the first bent portion 72 contacts the back surface 32B of one of the first metal members 32. The height of the heat exchanger main body 14 in the stacking direction can be maintained and managed in the same manner as in the first embodiment by contacting the second bent portion 70 with the surface 32A of the other first metal member 32. .

Further, according to the present embodiment, since the second metal member 62 includes the plurality of first protrusions 64 and the second protrusions 66, the second metal member 62 is in contact with the first heat medium 54 and the second heat medium 58. The surface area of the metal member 62 is increased, and the heat exchange efficiency between the first heat medium 54 and the second heat medium 58 can be improved.
[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. This embodiment is a modification of the second embodiment, and the same components as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 12 and 13, in the heat exchanger main body 14 of the present embodiment, a second metal member 74 shown in FIG. 12 is used instead of the second metal member 62 of the second embodiment. Yes.
In the second metal member 74 of the present embodiment, a plurality of (four in the present embodiment) frustoconical protrusions 76 projecting on the projecting side of the first convex part 64 on the top part 64A of the first convex part 64, and A plurality (four in this embodiment) of projections 78 projecting to the side opposite to the projecting side of the first convex portion 64 are provided. These protrusions 76 and protrusions 78 are extruded by pressing.

  When the first metal member 32 and the second metal member 74 are stacked, the protrusion 76 comes into contact with the back surface 32B of the first metal member 32 disposed on the protrusion side of the first protrusion 64, and the protrusion 78 is It abuts on the surface 32A of the first metal member 32 disposed on the opposite side to the protruding side of the first convex portion 64.

  Also in this embodiment, the heat exchanger 10 is manufactured through a preparation process, an arrangement process, a joining process, and an accommodation process, as in the above-described manufacturing method.

  In the present embodiment, the protrusion 76 and the protrusion 78 provided on the top portion 64 </ b> A of the first convex portion 64 of the second metal member 74 are in contact with one first metal member 32 and the other first metal member 32. Thus, the deformation of the top portion 64A is suppressed in the second metal member 74, and the deformation of the portion facing the top portion 64A is suppressed in the first metal member 32.

  Further, in the present embodiment, in the second metal member 74, the surface area of the second metal member 74 is increased as much as the protrusions 76 and the protrusions 78 are provided, and the heat exchange efficiency can be further improved.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, this embodiment is a modification of 2nd Embodiment, The same code | symbol is attached | subjected to the same structure as 2nd Embodiment, and the description is abbreviate | omitted.

  In the present embodiment, a first metal member 80 shown in FIG. 14 is used instead of the first metal member 32 of the second embodiment, and instead of the second metal member 62 of the second embodiment, FIG. The second metal member 82 shown in FIG.

  As shown in FIG. 14, two rectangular holes 36 are formed in the first metal member 80 of the present embodiment.

  As shown in FIG. 15, in the second metal member 82 of the present embodiment, two second convex portions 66 that are rectangular in plan view are formed on the top portion 64A of the first convex portion 64 with a gap therebetween. ing. A rectangular hole 68 is formed at the center of the top portion 66A of each second convex portion 66, and the second bent portion 70 formed at the edge of the rectangular hole 68 is a first metal as shown in FIG. It abuts against the surface 80A of the member 80.

  As shown in FIG. 15, the top 64 </ b> A of the first metal protrusion 82 of the second metal member 82 has a rectangular protrusion 84 protruding to the protruding side of the first protrusion 64, and the protrusion of the first protrusion 64. A rectangular protrusion 86 that protrudes on the opposite side to the side on which the protrusion is located is provided between the second protrusion 66 and the second protrusion 66. These protrusions 84 and protrusions 86 are extruded by pressing.

  In this embodiment, as shown in FIGS. 16 and 17, the heat exchanger main body 14 is configured by laminating the first metal member 80 and the second metal member 82, and the heat exchanger main body 14 includes Two first heat medium inflow pipes 16 and two first heat medium outflow pipes 18 are connected.

  When the first metal member 80 and the second metal member 82 are stacked, the protrusion 84 of the second metal member 82 abuts on the back surface 80B of one of the first metal members 80, and the protrusion 86 is the other first metal member 80. Since the first metal member 80 and the second metal member 82 are in contact with the surface 80A of the metal member 80, deformation in the vicinity of the center of the first metal member 80 and the second metal member 82 is suppressed.

  Thereby, in the heat exchanger 10 of this embodiment, the height dimension of the heat exchanger main body 14 in the stacking direction can be maintained and managed as in the above-described embodiment.

  Further, in the second metal member 82 of the present embodiment, two second convex portions 66 are formed on the top portion 64A of the first convex portion 64, and further, the protrusion 84 and the protrusion 86 are formed on the top portion 64A. Compared with the second metal member 74 of the third embodiment, the surface area is increased, and the heat exchange efficiency can be further improved.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. In addition, this embodiment is a modification of 4th Embodiment, The same code | symbol is attached | subjected to the same structure as 4th Embodiment, and the description is abbreviate | omitted.

  As shown in FIGS. 18 and 19, the heat exchanger 10 of the present embodiment has substantially the same configuration as the heat exchanger body 14 of the fourth embodiment, but the rightmost drawing of FIG. The first metal member 80 is brazed to the inner wall surface of the main body 12 </ b> A of the housing 12, the first heat medium inflow pipe 16 is connected to one second convex portion 66, and the other second convex portion 66 is connected to the other second convex portion 66. The point from which the 1st heat carrier outflow pipe 18 is connected differs from a 4th embodiment.

Also in the heat exchanger 10 of this embodiment, the height dimension of the heat exchanger main body 14 in the stacking direction can be maintained and managed as in the fourth embodiment.
Moreover, in the heat exchanger 10 of this embodiment, since the 1st heat-medium inflow pipe | tube 16 and the 1st heat-medium outflow pipe | tube 18 are arrange | positioned at the one side of the heat exchanger main body 14, the dimension of drawing left-right direction is packed. be able to.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention. For example, the modification examples described above may be appropriately combined.

  In the first embodiment, the first metal member 34 is provided with the first bent portion 48 as the first space securing portion. However, the present invention is not limited to this, and the first metal member 32 has an end edge. The first bent portion 48 may be formed, and the first bent portion 48 may be brought into contact with the second metal member 34.

  In the said embodiment, although the example which applied the plate structure of this invention to the heat exchanger main body 14 was shown, the plate structure of this invention is applied also to structures other than the heat exchanger main body which laminates | stacks two types of metal members. Is possible.

14 Heat exchanger body (laminate)
32 1st metal member 34 2nd metal member 42 Concave space (space)
43 Frame-shaped space (space)
44 1st convex part (convex part)
48 1st bending part (1st space securing part)
50 2nd bending part (1st space securing part)
62 2nd metal member 64 1st convex part (convex part)
72 1st bending part (1st space securing part)
70 Second bent portion (first space securing portion)
74 2nd metal member 76 protrusion (2nd space securing part)
78 Protrusion (second space securing part)
80 1st metal member 82 2nd metal member 84 Protrusion (2nd space securing part)
86 Protrusion (second space securing part)

Claims (4)

A laminate in which flat plate-like first metal members and second metal members having convex portions forming spaces between the first metal members are alternately laminated;
A composite brazing material comprising a joining brazing material and a metal powder, and joining the first metal member and the second metal member;
The first metal member and the second metal member are provided at an edge portion of the first metal member and the second metal member, and are in contact with the other of the first metal member and the second metal member and correspond to the space. A first space securing portion that maintains a distance between one metal member and the second metal member;
Having a plate structure.   2. The plate structure according to claim 1, wherein the first space securing portion is a portion that protrudes integrally from one of the edge portions of the first metal member and the second metal member.   The height of the said 1st space ensuring part is set to H, the height of the said convex part is set to h, and the height of the said composite brazing material is set to t, it was set as H <= h + t. Plate structure.   The first metal member and the second metal member are in contact with either one of the first metal member and the second metal member on a plane portion of the first metal member and the second metal member, respectively. The plate structure according to any one of claims 1 to 3, wherein a second space securing portion that keeps a distance from the two metal members is formed.