Heat exchanger

Abstract

This heat exchanger comprises: a heat exchange element that is formed by stacking heat transfer sheets in a plurality and that performs heat exchange between a first air current and a second air current; and a top plate (3) that covers the end surface of the heat exchange element in the stacking direction. The top plate (3) and the heat exchange element are adhered by an adhesive agent (8), and a cushion (9) having elasticity is provided at the outside of the adhesive agent (8).

Description

[Technical field]

[0001] The present disclosure relates to a heat exchanger for exchanging heat between two different air streams. [Background technology]

[0002] A heat exchange ventilator that exchanges heat between an intake airflow from the outside to the inside of a room and an exhaust airflow from the inside to the outside of a room is known. The heat exchange ventilator has a heat exchanger that exchanges heat. The heat exchanger is formed by attaching a casing including a top plate, a bottom plate, etc. to a heat exchange laminate that is formed by a laminate of two types of heat transfer sheets.

[0003] In Patent Document 1, a leak prevention material is filled between the heat exchange laminate and the top plate and between the heat exchange laminate and the bottom plate, and then a rubber paint is applied to the filled area and left at room temperature for 20 to 30 minutes, and then held at 200°C for 1 hour to harden the paint, thereby improving the airtightness between the heat exchange laminate and the top plate and between the heat exchange laminate and the bottom plate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-156603 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, if the rubber paint as an adhesive is applied, the rubber paint may block the air inlet and outlet of the heat exchange laminate, and the protruding part may get in the way when the heat exchanger is installed in the heat exchange ventilation device, making installation difficult. In order to prevent this problem, the protruding rubber paint must be wiped off before it hardens. In addition, the airtightness retention effect decreases in the part where the rubber paint is not applied, so the rubber paint must be applied evenly all over the surface up to the outer edge, making it difficult to prevent unnecessary protrusion. Furthermore, there are multiple work processes from filling the leak prevention member to hardening the rubber paint, which poses problems in terms of productivity and cost.

[0006] This disclosure , sky Ensure airtightness At the same time, the amount of adhesive required for airtightness can be minimized, simplifying workability and reducing costs. realization can The object is to obtain a heat exchanger. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the present disclosure provides a heat exchanger comprising a heat exchange element formed by stacking a plurality of heat transfer sheets and performing heat exchange between a first air flow and a second air flow; is glued to and an end plate, for, Heat Exchange Element and is attached glue Coating The heat exchange element and the end plate are hexagonal when viewed from the stacking direction. The triangular portions of the end plate facing the triangular first header portion of the heat exchange element in which the inlet for the second air flow and the outlet for the first air flow are arranged and the triangular second header portion of the heat exchange element in which the inlet for the first air flow and the outlet for the second air flow are arranged In Form a triangular shape 3 1 Of the vertices Any 2 1 The coating is arranged to have a first line applied in a line shape connecting the first vertex and the second vertex, and a second line applied in a line shape intersecting the first line with the remaining vertex, the third vertex. Effect of the Invention

[0008] According to the heat exchanger of the present disclosure, air tightness is ensured. At the same time, the amount of adhesive required for airtightness can be minimized, simplifying workability and reducing costs. realization can This has the effect of: [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing an overall configuration of a heat exchanger according to a first embodiment; [Diagram 2] FIG. 1 is an exploded perspective view showing an overall configuration of a heat exchanger according to a first embodiment; [Diagram 3] FIG. 1 is a perspective view showing an overall configuration of a heat exchange element according to a first embodiment; [Figure 4] FIG. 1 is a perspective view showing a first heat transfer sheet of two types of heat transfer sheets of a heat exchange element according to a first embodiment; [Diagram 5] FIG. 1 is a perspective view showing a second heat transfer sheet of the two types of heat transfer sheets of the heat exchange element according to the first embodiment; [Figure 6] FIG. 1 is a plan view illustrating an air flow in a heat exchange element according to a first embodiment; [Figure 7] FIG. 1 is a plan view of a top plate according to the first embodiment, seen from the back side where the top plate is joined to a heat exchange element. [Figure 8] FIG. 8 is a plan view showing a state in which an adhesive is applied to the top plate according to the first embodiment shown in FIG. 7 and a cushion is placed on the top plate; [Figure 9] FIG. 8 is an enlarged perspective view showing the vicinity of a vertex B of the tabletop according to the first embodiment shown in FIG. [Figure 10] FIG. 8 is an enlarged perspective view showing the vicinity of a vertex A of the tabletop according to the first embodiment shown in FIG. [Figure 11] FIG. 9 is an enlarged perspective view showing the vicinity of a vertex B of the tabletop according to the first embodiment shown in FIG. [Figure 12] FIG. 9 is an enlarged perspective view showing the vicinity of a vertex A of the tabletop according to the first embodiment shown in FIG. [Figure 13] FIG. 9 is an enlarged plan view showing the vicinity of a vertex A of the top plate according to the first embodiment shown in FIG. [Figure 14] FIG. 9 is an enlarged plan view showing the vicinity of a vertex B of the top plate according to the first embodiment shown in FIG. [Figure 15] FIG. 9 is an enlarged plan view showing the vicinity of a vertex C of the top plate according to the first embodiment shown in FIG. [Figure 16]16 is a cross-sectional view of the top plate according to the first embodiment shown in FIG. 13 taken along line XVI-XVI. [Figure 17] 17 is a cross-sectional view of the top plate according to the first embodiment shown in FIG. 14 taken along line XVII-XVII. [Figure 18] 16 is a cross-sectional view of the top plate according to embodiment 1 shown in FIG. 15 taken along line XVIII-XVIII. [Figure 19] FIG. 1 is a front view showing a state in which an adhesive is applied to a side plate according to the first embodiment; [Figure 20] FIG. 1 is a front view showing a state in which adhesive is applied to a support according to the first embodiment; [Figure 21] FIG. 11 is a plan view showing a second application pattern of an adhesive on the top plate according to the first embodiment; [Figure 22] FIG. 11 is a plan view showing a third application pattern of an adhesive on the top plate according to the first embodiment; [Figure 23] FIG. 11 is a plan view showing a fourth application pattern of an adhesive on the top plate according to the first embodiment; [Figure 24] FIG. 11 is a plan view showing a fifth application pattern of an adhesive on the top plate according to the first embodiment; [Diagram 25] FIG. 13 is a perspective view showing the overall configuration of a heat exchanger according to a second embodiment; [Figure 26] FIG. 13 is an exploded perspective view showing the overall configuration of a heat exchanger according to a second embodiment. [Figure 27] FIG. 11 is a plan view illustrating the air flow in the heat exchanger according to the second embodiment. [Figure 28] 1 is a conceptual plan view of a top plate in a heat exchanger according to a second embodiment, viewed from the rear side where the top plate is joined to a heat exchange element. [Figure 29] FIG. 11 is a plan view showing a second application pattern of adhesive on the top plate according to the second embodiment; [Diagram 30] FIG. 11 is a plan view showing a third application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 31] FIG. 11 is a plan view showing a fourth application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 32] FIG. 11 is a plan view showing a fifth application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 33] FIG. 11 is a plan view showing a sixth application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 34] FIG. 13 is a plan view showing a seventh application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 35] FIG. 13 is a plan view showing an eighth application pattern of an adhesive on a top plate according to the second embodiment; [Diagram 36] FIG. 13 is a plan view showing a ninth application pattern of an adhesive on a top plate according to the second embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat exchanger according to an embodiment will be described in detail below with reference to the drawings.

[0011] Embodiment 1 Fig. 1 is a perspective view showing the overall configuration of a heat exchanger 1 according to embodiment 1. Fig. 2 is an exploded perspective view showing the overall configuration of a heat exchanger 1 according to embodiment 1. Fig. 3 is a perspective view showing the overall configuration of a heat exchange element 2 according to embodiment 1. Fig. 4 is a perspective view showing a first heat transfer sheet 7a of the two types of heat transfer sheets of the heat exchange element 2 according to embodiment 1. Fig. 5 is a perspective view showing a second heat transfer sheet 7b of the two types of heat transfer sheets of the heat exchange element 2 according to embodiment 1.

[0012] As shown in Figures 1 and 2, heat exchanger 1 is composed of a heat exchange element 2, a top plate 3 which is an end plate, a bottom plate 4 which is also an end plate, side plates 5, and supports 6. The top plate 3 and bottom plate 4 which are end plates cover the end faces of heat exchange element 2 in the stacking direction. The top plate 3 is adhesively fixed to the upper surface of heat exchange element 2 in the stacking direction. The bottom plate 4 is adhesively fixed to the lower surface of heat exchange element 2 in the stacking direction. Side plates 5 are adhesively fixed to two opposing surfaces out of six side surfaces of heat exchange element 2. Supports 6 are adhesively fixed to two opposing ridges out of six ridges on the side of heat exchange element 2.

[0013] The heat exchange element 2 has a hexagonal shape in a plan view. As shown in FIG. 2 and FIG. 3, the heat exchange element 2 is configured by alternately laminating two types of first heat transfer sheets 7a and second heat transfer sheets 7b that are mirror images of each other. As shown in FIG. 4, the first heat transfer sheet 7a has two triangular header parts 30 and a heat exchange part 31 disposed between the two header parts 30. One of the header parts 30 has an inlet 55 through which air flows in. A plurality of ribs 32 are provided so that air is guided from the inlet 55 toward the heat exchange part 31. The other header part 30 has an outlet 56 through which air flows out. A plurality of ribs 32 are provided so that air is guided from the heat exchange part 31 toward the outlet 56. The heat exchange part 31 has a plurality of flow paths (not shown) that connect the two header parts 30. The first air flow A1 is formed by the first heat transfer sheet 7a.

[0014] As shown in Fig. 5, the second heat transfer sheet 7b has two triangular header portions 35 and a heat exchange portion 36 disposed between the two header portions 35. One of the header portions 35 has an inlet 53 through which air flows in. A plurality of ribs 37 are provided so that air is guided from the inlet 53 toward the heat exchange portion 36. The other header portion 35 has an outlet 54 through which air flows out. A plurality of ribs 37 are provided so that air is guided from the heat exchange portion 36 toward the outlet 54. The heat exchange portion 36 has a plurality of flow paths (not shown) connecting the two header portions 35. A second air flow A2 is formed by the second heat transfer sheet 7b.

[0015] FIG. 6 is a plan view for explaining the air flow of the heat exchange element 2 according to the first embodiment. In FIG. 6, vertices A to F of a hexagon are indicated. The vertices A to F indicated in FIG. 6 correspond to the vertices A to F indicated in FIG. 4 and FIG. 5. The first header portion 50 indicated by the triangle ABC corresponds to the region where the header portion 30 on the left side of the first heat transfer sheet 7a shown in FIG. 4 and the header portion 35 on the left side of the second heat transfer sheet 7b shown in FIG. 5 are laminated. The second header portion 51 indicated by the triangle DEF corresponds to the region where the header portion 30 on the right side of the first heat transfer sheet 7a shown in FIG. 4 and the header portion 35 on the right side of the second heat transfer sheet 7b shown in FIG. 5 are laminated. The heat exchange portion 52 indicated by the quadrangle ACDF corresponds to the region where the heat exchange portion 31 of the first heat transfer sheet 7a shown in FIG. 4 and the heat exchange portion 36 of the second heat transfer sheet 7b shown in FIG. 5 are laminated. Side AB corresponds to the inlet 53 of the second air flow A2, side DE corresponds to the outlet 54 of the second air flow, side EF corresponds to the inlet 55 of the first air flow A1, and side BC corresponds to the outlet 56 of the first air flow A1.

[0016] In this way, the heat exchange element 2 is configured by alternately stacking two types of first heat transfer sheets 7a and second heat transfer sheets 7b, which are mirror images of each other, one by one, so that layers through which the first air flow A1 passes and layers through which the second air flow A2 passes are alternately layered. The air paths of the first air flow A1 and the second air flow A2 are completely independent of each other, and heat exchange is performed between the first air flow A1 and the second air flow A2 in the heat exchange section 52 via the first heat transfer sheet 7a and the second heat transfer sheet 7b. In the first embodiment, a counterflow type heat exchanger is configured in which the first air flow A1 and the second air flow A2 flow in opposite directions so as to be substantially parallel to each other in the heat exchange section 52.

[0017] FIG. 7 is a plan view of the top plate 3 according to the first embodiment as viewed from the back side to be joined to the heat exchange element 2. FIG. 8 is a plan view showing a state in which an adhesive 8 is applied to the top plate 3 according to the first embodiment shown in FIG. 7 and a cushion 9 is arranged. FIG. 8 shows a state before the top plate 3 is assembled to the heat exchange element 2. FIG. 9 is an enlarged perspective view showing the vicinity of the apex B of the top plate 3 according to the first embodiment shown in FIG. 7. FIG. 10 is an enlarged perspective view showing the vicinity of the apex A of the top plate 3 according to the first embodiment shown in FIG. 7. FIG. 11 is an enlarged perspective view showing the vicinity of the apex B of the top plate 3 according to the first embodiment shown in FIG. 8. FIG. 11 shows a state after the cushion 9 is arranged. FIG. 12 is an enlarged perspective view showing the vicinity of the apex A of the top plate 3 according to the first embodiment shown in FIG. 8. FIG. 12 shows a state after the cushion 9 is arranged. FIG. 13 is an enlarged plan view showing the vicinity of the apex A of the top plate 3 according to the first embodiment shown in FIG. 8. FIG. 14 is an enlarged plan view showing the vicinity of the apex B of the top plate 3 according to the first embodiment shown in FIG. Fig. 15 is an enlarged plan view showing the vicinity of vertex C of table top 3 according to embodiment 1 shown in Fig. 8. Fig. 16 is a cross-sectional view of table top 3 according to embodiment 1 shown in Fig. 13 taken along line XVI-XVI. Fig. 17 is a cross-sectional view of table top 3 according to embodiment 1 shown in Fig. 14 taken along line XVII-XVII. Fig. 18 is a cross-sectional view of table top 3 according to embodiment 1 shown in Fig. 15 taken along line XVIII-XVIII.

[0018] As shown in FIG. 7 and FIG. 8, the top plate 3 has a hexagonal top surface portion 3a, and a number of ribs are formed on the top surface portion 3a. A heat exchanger protection portion 65 for protecting the heat exchanger portion 52 of the heat exchange element 2 is provided in the center of the back surface of the top plate 3. A first header protection portion 66 for protecting the first header portion 50 shown in FIG. 6 is provided on the right side of the heat exchanger protection portion 65. A second header protection portion 67 for protecting the second header portion 51 shown in FIG. 6 is provided on the left side of the heat exchanger protection portion 65. The heat exchanger protection portion 65 is a quadrangle having vertices A, C, D, and F as its four vertices. The hexagonal top surface portion 3a is symmetrical with respect to the central axis Y of the quadrangle having vertices A, C, D, and F as its four vertices. Hereinafter, the structure near vertices A, B, and C will be mainly described, and the structure near vertices F, E, and D will be omitted. Vertex F has a structure similar to vertex A, vertex E has a structure similar to vertex B, and vertex D has a structure similar to vertex C.

[0019] As shown in Figures 7, 10, 12, 13, and 15, a plurality of ribs 60 are formed on the back surface of the top surface portion 3a, extending between apex A and apex C and standing parallel to each other with a gap therebetween. Similarly, a similar plurality of ribs 60 are formed between apex F and apex D. Also, as shown in Figures 7, 9, 11, and 14, a plurality of ribs 61 are formed between the heat exchanger protection portion 65 and apex B, standing parallel to each other with a gap therebetween, so as to divide the rib 60 in half. Similarly, a similar plurality of ribs 61 are formed between the heat exchanger protection portion 65 and apex E.

[0020] As shown in Figs. 7 to 18, a side wall 13 is erected on the peripheral edge of the hexagonal top surface portion 3a. The side wall 13 has an outer wall 13a and an inner wall 13b that extend along the peripheral edge of the hexagonal shape and stand parallel to each other at a distance. Therefore, as shown in Figs. 9 to 18, the side wall 13 including the outer wall 13a and the inner wall 13b is formed near the apex A, apex B, and apex C. Near the apex A, apex B, and apex C, the inner wall 13b, the rib 60, and the rib 61 are approximately the same height. The inner wall 13b at the apex A and the inner wall 13b at the apex C are connected to the rib 60. The inner wall 13b at the apex B and the rib 61 are connected to each other. Also, as shown in Figs. 16 to 18, near the apex A, apex B, and apex C, the outer wall 13a is formed higher than the inner wall 13b.

[0021] As shown in Figures 10, 12, and 13, two ribs 14 are provided near the apex A, standing at a distance from each other and serving as connecting walls. The ribs 14 are formed to be connected to the outer wall 13a and the inner wall 13b, and a partition 63 surrounded by the outer wall 13a, the inner wall 13b, and the ribs 14 is formed at the apex A. A similar partition 63 surrounded by the outer wall 13a, the inner wall 13b, and the ribs 14 is also formed at the apex C, as shown in Figure 15.

[0022] Similarly, as shown in Figures 9, 11, and 14, two ribs 14 are provided as connecting walls standing at a distance from each other on either side of the apex B near the apex B. The ribs 14 are formed and connected to the outer wall 13a and the inner wall 13b, and a partition 64 surrounded by the outer wall 13a, the inner wall 13b, and the ribs 14 is formed at the apex B.

[0023] As shown in Figures 8, 12, 13, and 16, a cushion 9 is provided in the partition 63 at the apex A as a resilient member having elasticity. The cushion 9 has a shape corresponding to the partition 63, and is made of a cushioning material such as a foamed material. The cushion 9 is intended to ensure airtightness, and therefore can be replaced with a soft resilient material such as a rubber material or an elastomer in addition to the foamed material. Before the top plate 3 is attached to the heat exchange element 2, the cushion 9 is higher than the ribs 60, the outer wall 13a, and the inner wall 13b.

[0024] As shown in Figures 8, 15, and 18, a similar cushion 9 is also provided in the partition 63 at the apex C. As shown in Figures 8, 11, 14, and 17, a cushion 9 is also provided in the partition 64 at the apex B.

[0025] In FIG. 8, the adhesive 8 is applied in a first application pattern. As shown in FIG. 8 and FIG. 13 to FIG. 18, the adhesive 8 is filled and applied without any gaps between the three ribs 60 connecting the apex A and the apex C and between the cushion 9 at the apex A and the cushion 9 at the apex C. The adhesive 8 is, for example, a silicone sealant. Also, the adhesive 8 is filled and applied without any gaps between the three ribs 61 extending from the apex B and between the cushion 9 at the apex B and the rib 60. As shown in FIG. 16 to FIG. 18, before the top plate 3 is assembled to the heat exchange element 2, the adhesive 8 is applied so that the application height of the adhesive 8 is lower than the height of the cushion 9.

[0026] Although the illustration and description of the bottom plate 4 are omitted, it has a similar structure to the top plate 3.

[0027] 19 is a front view showing a state in which adhesive 8 has been applied to side panel 5 according to embodiment 1. Adhesive 8 is applied in lines near the upper and lower ends of side panel 5 over substantially the entire width. Also, adhesive 8 is applied in lines in the vertical direction near the center so as to connect with adhesive 8 near the upper end and adhesive 8 near the lower end.

[0028] 20 is a front view showing a state in which adhesive 8 has been applied to the support 6 according to embodiment 1. The adhesive 8 is applied in a line shape in the vertical direction near the center in the left-right direction of the support 6, from near the upper end to near the lower end.

[0029] As shown in Fig. 2, heat exchanger 1 is constructed by placing and adhering top plate 3, which has adhesive 8 applied, to the upper surface of heat exchange element 2 shown in Fig. 3, placing and adhering bottom plate 4, which has adhesive 8 applied, to the lower surface of heat exchange element 2, placing and adhering side plates 5, which have adhesive 8 applied, to the side surfaces constituting side CD and side surfaces constituting side AF, and placing and adhering support posts 6, which have adhesive 8 applied, to the ridge line including vertex B and the ridge line including vertex E. This ensures the strength of heat exchanger 1 so that workers can handle it freely.

[0030] Next, other application patterns of adhesive 8 will be described with reference to Fig. 21 to Fig. 24. Fig. 21 is a plan view showing a second application pattern of adhesive 8 on top plate 3 according to embodiment 1. Fig. 22 is a plan view showing a third application pattern of adhesive 8 on top plate 3 according to embodiment 1. Fig. 23 is a plan view showing a fourth application pattern of adhesive 8 on top plate 3 according to embodiment 1. Fig. 24 is a plan view showing a fifth application pattern of adhesive 8 on top plate 3 according to embodiment 1.

[0031] In FIG. 21, adhesive 8 is applied to the rib connecting vertex A and vertex B, the rib connecting vertex D and vertex E, the rib connecting a position between vertex A and vertex B and vertex C, and the rib connecting a position between vertex D and vertex E and vertex F.

[0032] In FIG. 22, adhesive 8 is applied to the rib connecting vertex A and vertex C, to the rib connecting vertex D and vertex F, to the rib connecting the position between vertex A and vertex C and vertex B, and to the rib connecting the position between vertex D and vertex F and vertex E.

[0033] In Figure 23, adhesive 8 is applied to the rib connecting vertex A and vertex C, the rib connecting vertex D and vertex F, the rib connecting the position between vertex A and vertex C and vertex B, and the rib connecting the position between vertex D and vertex F and vertex E.

[0034] In Figure 24, adhesive 8 is applied to the rib connecting vertex B and vertex C, the rib connecting vertex E and vertex F, the rib connecting the position between vertex B and vertex C to vertex A, and the rib connecting the position between vertex E and vertex F to vertex D.

[0035] Thus, referring to FIG. 6, the first to fifth application patterns shown in Figures 8 and 21 to 24 have, in the first header section 50 formed by a triangle ABC having an inlet 53 (side AB) for the second air flow A2 and an outlet 56 (side BC) for the first air flow A1, a first line where adhesive 8 is applied in a line shape to connect two of vertices A, B, and C, the first vertex and the second vertex, and a second line where adhesive 8 is applied in a line shape to intersect with the remaining vertex, the third vertex, and the first line.

[0036] Also, referring to FIG. 6, the first to fifth application patterns shown in Figures 8 and 21 to 24 have, in the second header portion 51 formed by a triangle DEF having an outlet 54 (side DE) of the second air flow A2 and an inlet 55 (side EF) of the first air flow A1, a first line where adhesive 8 is applied in a line shape to connect two of vertices D, E, and F, that is, the first vertex and the second vertex, and a second line where adhesive 8 is applied in a line shape to intersect with the remaining vertex, the third vertex, and the first line.

[0037] According to the first embodiment, the following effects are achieved. In the heat exchanger 1 of the first embodiment, the cushion 9 is disposed on the outside at each vertex of the top plate 3, and the adhesive 8 is applied from the inside of the cushion 9 to the inside. Therefore, even if the adhesive 8 is crushed during assembly, the cushion 9 functions as a dam, and the adhesive 8 is not pushed out of the top plate 3. Therefore, there is no need to wipe off the adhesive 8 while ensuring airtightness up to the outer end of the heat exchanger 1, the inlet 53, 55 or the outlet 54, 56 are not blocked by the adhesive 8 pushed out to the outside, and the protruding adhesive 8 does not interfere with the installation of the heat exchanger 1 in a heat exchange ventilation device or the like. In addition, even if the amount of adhesive 8 applied is somewhat large, it is blocked by the cushion 9, so that the range of control of the amount of application can be increased, making it easier to control the work.

[0038] Furthermore, since outer walls 13a are provided along the peripheral edges of each vertex of top plate 3, cushion 9 can be prevented from buckling and protruding outward when top plate 3 or bottom plate 4 are assembled.

[0039] Further, the outer wall 13a, the inner wall 13b, and the rib 14 are connected to the partitions 63, 64 in which the cushion 9 is arranged so as to surround the partitions 63, 64, so that the cushion 9 can be positioned.

[0040] In addition, since multiple ribs 60, 61 are arranged at intervals and adhesive 8 is applied between them, they serve as a guide for the application position of adhesive 8 and also function as a dam to prevent adhesive 8 from flowing out from the desired bonding line position before the top plate 3 or bottom plate 4 is assembled.

[0041] Furthermore, in the first header section 50 and the second header section 51, the application pattern of the adhesive 8 is configured to have a first line applied in a line shape connecting two of the three vertices, the first vertex and the second vertex, and a second line applied in a line shape intersecting the remaining vertex, the third vertex, and the first line.Therefore, it is possible to minimize the amount of adhesive 8 used for airtightness while ensuring airtightness between the first air flow A1 and the second air flow A2, thereby simplifying workability and reducing costs.

[0042] Embodiment 2 In the second embodiment, a cross-flow type heat exchanger 16 is disclosed. Fig. 25 is a perspective view showing the overall configuration of the heat exchanger 16 according to the second embodiment. Fig. 26 is an exploded perspective view showing the overall configuration of the heat exchanger 16 according to the second embodiment. Fig. 27 is a plan view for explaining the air flow of the heat exchanger 16 according to the second embodiment. Fig. 28 is a conceptual plan view of the top plate 18 in the heat exchanger 16 according to the second embodiment, seen from the back side to be joined to the heat exchange element 17. Fig. 28 shows a first application pattern of the adhesive 8 on the top plate 18 according to the second embodiment.

[0043] As shown in Figures 25 and 26, a cross-flow type heat exchanger 16 is composed of a heat exchange element 17, a top plate 18, a bottom plate 19, and supports 20. The top plate 18 is adhesively fixed to the upper surface of the heat exchange element 17 in the stacking direction. The bottom plate 19 is adhesively fixed to the lower surface of the heat exchange element 17 in the stacking direction. The supports 20 are adhesively fixed to the four ridges of the side of the heat exchange element 17. The heat exchange element 17 is composed by alternately stacking two types of first and second heat transfer sheets that are mirror images of each other.

[0044] 27, air passages through which the first air flow B1 flows and air passages through which the second air flow B2 flows are formed alternately and independently of each other between the first heat transfer sheet and the second heat transfer sheet. Side AB forms an inlet 70 for the first air flow B1, side BC forms an outlet 71 for the second air flow B2, side CD forms an outlet 72 for the first air flow B1, and side AD forms an inlet 73 for the second air flow B2. The heat exchange element 17 exchanges heat between the first air flow B1 and the second air flow B2.

[0045] Although not shown in FIG. 28, in the second embodiment, the top plate 18 and the bottom plate 19 have ribs similar to the rib 60 or rib 61 in the first embodiment formed on the peripheral edge of the rectangle, on a line connecting the vertex C diagonally opposite the vertex A, and on a line connecting the vertex D diagonally opposite the vertex B. As shown in FIG. 28, the top plate 18 and the bottom plate 19 have partitions (not shown) similar to the partitions 63 and 64 surrounded by the outer wall 13a, the inner wall 13b, and the rib 14 in the first embodiment, and the cushions 9 are installed in these partitions. Furthermore, as shown in FIG. 28, the adhesive 8 is applied to the line connecting the vertex A and the vertex C, the line connecting the vertex A and the vertex B, and the line connecting the vertex C and the vertex D. As in the first embodiment, the adhesive 8 is arranged inside the cushions 9 provided at the vertices A, B, C, and D, and is lower in height than the cushions 9.

[0046] Next, other application patterns of the adhesive 8 will be described with reference to FIG. 29 to FIG. 36. FIG. 29 is a plan view showing a second application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 30 is a plan view showing a third application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 31 is a plan view showing a fourth application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 32 is a plan view showing a fifth application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 33 is a plan view showing a sixth application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 34 is a plan view showing a seventh application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 35 is a plan view showing an eighth application pattern of the adhesive 8 on the top plate 18 according to the second embodiment. FIG. 36 is a plan view showing a ninth application pattern of the adhesive 8 on the top plate 18 according to the second embodiment.

[0047] In FIG. 29, the adhesive 8 is applied onto the rib connecting the apex A and the apex C, and onto the rib connecting the apex B and the apex D.

[0048] In FIG. 30, adhesive 8 is applied onto the rib connecting vertex B and vertex D, onto the rib connecting vertex A and vertex D, and onto the rib connecting vertex B and vertex C.

[0049] In FIG. 31, adhesive 8 is applied onto the rib connecting vertex A and vertex C, onto the rib connecting vertex A and vertex D, and onto the rib connecting vertex B and vertex C.

[0050] In FIG. 32, adhesive 8 is applied onto the rib connecting vertex B and vertex D, onto the rib connecting vertex A and vertex B, and onto the rib connecting vertex B and vertex C.

[0051] In FIG. 33, adhesive 8 is applied onto the rib connecting vertex A and vertex C, onto the rib connecting vertex A and vertex D, and onto the rib connecting vertex A and vertex B.

[0052] In FIG. 34, adhesive 8 is applied onto the rib connecting vertex B and vertex D, onto the rib connecting vertex A and vertex B, and onto the rib connecting vertex C and vertex D.

[0053] In FIG. 35, adhesive 8 is applied onto the rib connecting vertex B and vertex D, onto the rib connecting vertex A and vertex D, and onto the rib connecting vertex C and vertex D.

[0054] In FIG. 36, adhesive 8 is applied onto the rib connecting vertex A and vertex C, onto the rib connecting vertex B and vertex C, and onto the rib connecting vertex C and vertex D.

[0055] Here, the application patterns shown in Figures 28, 29, 31, 33, and 36 have a first line in which the adhesive 8 is applied in a line shape so as to connect two vertices AC in a triangle ABC formed by the inlet 70 of the first air flow B1 and the outlet 71 of the second air flow B2, and a second line in which the adhesive 8 is applied in a line shape so as to intersect the remaining vertex B and the first line. Similarly, in a triangle ACD formed by the outlet 72 of the first air flow B1 and the inlet 73 of the second air flow B2, the first line in which the adhesive 8 is applied in a line shape so as to connect two vertices AC, and a second line in which the adhesive 8 is applied in a line shape so as to intersect the remaining vertex D and the first line. Since the triangles ABC and ACD are in contact with each other and share a common side AC, the first line is a common line between the triangles ABC and ACD.

[0056] In addition, the application patterns shown in FIG. 28 to FIG. 36 are the four vertices A, B, C, and D. Diagonal The first line is applied in a line shape to connect two vertices, the first vertex and the second vertex, and the third line is applied in a line shape to connect one of the remaining two vertices, the third vertex and the 1R The second line is applied in a line shape so as to intersect with the first line, and the remaining vertex is the fourth vertex and the second line is applied in a line shape so as to intersect with the first line. 1R and a third line applied in a line shape so as to intersect with the first line.

[0057] Thus, according to the second embodiment, the cross-flow type heat exchanger 16 can also achieve the same effects as those of the first embodiment.

[0058] In the above embodiments 1 and 2, the end plates, that is, the top plate 3, 18 and the bottom plate 4, 19, are polygonal in shape and of the same size as the heat exchange element 2, 17. However, the end plates may be larger than the heat exchange element 2, 17, and cushions may be placed on the end plates at positions corresponding to each vertex of the polygon of the heat exchange element 2, 17.

[0059] The configurations shown in the above embodiments are examples of the contents of the present disclosure, and may be combined with other known technologies, and parts of the configurations may be omitted or modified without departing from the gist of the present disclosure. [Explanation of symbols]

[0060] 1,16 heat exchanger, 2,17 heat exchange element, 3,18 top plate, 3a top surface portion, 4,19 bottom plate, 5 side plate, 6 support, 7a first heat transfer sheet, 7b second heat transfer sheet, 8 adhesive, 9 cushion, 13 side wall, 13a outer wall, 13b inner wall, 14,32,37,60,61 rib, 20 support, 30,35 header portion, 31,36,52 heat exchange portion, 50 first header portion, 51 second header portion, 53,55,70,73 inlet, 54,56,71,72 outlet, 63,64 partition portion, 65 heat exchange portion protection portion, A,B,C,D,E,F apex, A1,B1 first air flow, A2,B2 second air flow, Y central axis.

Claims

1. a heat exchange element formed by laminating a plurality of heat transfer sheets and exchanging heat between the first air flow and the second air flow; an end plate bonded to an end surface of the heat exchange element in the stacking direction; Equipped with An adhesive is applied to the end plate to be bonded to the heat exchange element, When viewed from the stacking direction, the heat exchange element and the end plate are hexagonal in shape, a heat exchanger characterized in that the adhesive is arranged in each triangular portion of the end plate facing a triangular first header portion of the heat exchange element in which the second air flow inlet and the first air flow outlet are arranged, and a triangular second header portion of the heat exchange element in which the first air flow inlet and the second air flow outlet are arranged, so as to have a first line applied in a line shape connecting two of three vertices that constitute the triangular shape, that is, a first vertex and a second vertex, and a second line applied in a line shape so as to intersect the first line with a third vertex, that is the remaining vertex.

2. A heat exchange element formed by stacking multiple rectangular heat transfer sheets, which exchanges heat between a first air flow flowing from a first side of the rectangular shape to an opposing second side and a second air flow flowing from a third side of the rectangular shape to an opposing fourth side; A rectangular end plate is bonded to an end surface of the heat exchange element in the stacking direction; Equipped with An adhesive is applied to the end plate to be bonded to the heat exchange element, The adhesive is arranged to have a first line applied in a line shape connecting a first vertex and a second vertex, which are any two diagonal vertices among the four vertices of the end plate, a second line applied in a line shape intersecting the first line with a third vertex, which is one of the remaining two vertices of the end plate, and a third line applied in a line shape intersecting the first line with a fourth vertex, which is the remaining vertex of the end plate.

3. The end plate is 3. A heat exchanger as described in claim 1 or 2, characterized in that it has a plurality of ribs arranged in parallel at intervals at positions corresponding to the first line and the second line, and the adhesive is applied between the plurality of ribs.

4. 4. The heat exchanger according to claim 1, further comprising an elastic member provided on the outside of the adhesive.

5. 5. The heat exchanger according to claim 4, wherein said elastic members are disposed at each vertex of said end plates.

6. a heat exchange element formed by laminating a plurality of heat transfer sheets and exchanging heat between the first air flow and the second air flow; an end plate bonded to an end surface of the heat exchange element in the stacking direction; Equipped with An adhesive is applied to the end plate to be bonded to the heat exchange element, and an elastic member having elasticity is provided outside the adhesive, The heat exchange element and the end plate are polygonal when viewed from the stacking direction, and the elastic member is disposed at each vertex of the end plate; a heat exchanger including: an outer wall protruding from each vertex of the end plate on the outside of the elastic member so as to contact the heat exchange element;

7. 7. The heat exchanger of claim 6, wherein said outer wall is disposed along a peripheral edge of said end plate.

8. 7. The heat exchanger according to claim 6, characterized in that a partition is provided at each vertex of the end plate, the partition being surrounded by the outer wall, an inner wall arranged inside the outer wall, and a pair of connecting walls connecting the outer wall and the inner wall, and the elastic member is arranged in the partition.

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