Heat exchanger
By setting flow path bulges and manifold bulges on the heat exchange plate, the flow path design is optimized, solving the problem of insufficient heat exchange capacity in a limited space and achieving efficient and compact heat exchange effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SANDEN CO LTD
- Filing Date
- 2021-08-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing heat exchangers are difficult to increase heat exchange capacity in a limited space without becoming excessively large, resulting in insufficient heat exchange efficiency.
The heat exchange plate structure is adopted. By setting the flow path bulge and the manifold bulge on the heat exchange plate, the heat exchange between the first and second heat media is promoted. The flow path is expanded by the flow path forming part side extension to increase the heat exchange area. At the same time, the flow path design is optimized to reduce flow resistance and improve strength.
It achieves efficient heat exchange in a compact shape, increases the heat exchange area, improves heat exchange efficiency, and reduces flow resistance through flow path design, ensuring the strength and ease of manufacturing of the heat exchanger.
Smart Images
Figure CN116034246B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to heat exchangers, such as heat exchangers suitable for air conditioning systems in vehicles. Background Technology
[0002] Previously, a plate-laminated heat exchanger was proposed, in which an internal space formed by punching is provided between two heat transfer plates to serve as a flow path for heat exchange. This type of heat exchanger can perform heat exchange between liquids, between gases and liquids, and between gases. Patent Document 1 describes a plate-laminated heat exchanger for heat exchange between air conditioning air and refrigerant.
[0003] Patent Document 1: Japanese Patent No. 4122578
[0004] In the invention of Patent Document 1, if it is desired to further increase the heat exchange capacity, it is necessary to lengthen the core in the direction of refrigerant flow or increase the size of the core in the ventilation direction, which requires increasing the size of the heat exchanger. In the case of such a heat exchanger, for example, when installed in a limited space such as a vehicle, it may be impossible to ensure the installation space. Summary of the Invention
[0005] The purpose of this invention is to solve the problem of providing a heat exchanger that can ensure the necessary heat exchange volume without making the heat exchanger too large.
[0006] The present invention employs the following configuration to solve the aforementioned problem.
[0007] That is, the heat exchanger according to one aspect of the present invention is characterized in that it includes a heat exchange core for a first heat medium to flow inside and a shell covering the heat exchange core, and performs heat exchange between the first heat medium and a second heat medium flowing between the outside of the heat exchange core and the inside of the shell. The heat exchange core includes a core portion, on which a heat exchange plate formed by overlapping a first plate component and a second plate component is stacked in a stacking direction. The heat exchange plate has a flow path forming portion and a manifold portion. The flow path forming portion has a plurality of flow path protrusions. The flow path protrusions bulge outward toward the outside of the heat exchange plate and form heat exchange flow paths for the first heat medium inside. The manifold portion has a connecting hole communicating with the manifold portion of the adjacent heat exchange plate, and a flow path forming portion side extension extending on the flow path forming portion side of the connecting hole. The flow path forming portion side extension communicates with the plurality of heat exchange flow paths.
[0008] According to this configuration, heat transfer between the first heat medium flowing inside the flow path forming section and the second heat medium flowing outside the flow path forming section can be promoted, resulting in heat exchange with higher heat exchange efficiency. The area for heat exchange via the flow path bulge can be increased, and a compact shape can be formed. Furthermore, the flow path can be extended via the flow path forming section side extension.
[0009] Alternatively, as another form of the heat exchanger involved in the aforementioned one side, the manifold section is characterized by being formed by a manifold bulge extending from one of the first plate component and the second plate component and a flat manifold section on the other side, wherein the manifold bulge and the flat manifold section of adjacent heat exchange plates are stacked in the core in such a manner that they are opposite each other.
[0010] According to this configuration, by not positioning the manifold bulges against each other, a gap is created in the flow path forming section of the stacked heat exchange plates, which ensures the flow path of the second heat medium.
[0011] Alternatively, as another form of the heat exchanger involved in one side, the flow path bulge abuts against the flow path bulge of the adjacent heat exchange plate and / or the manifold bulge.
[0012] According to this configuration, the strength of the heat exchange core can be improved by making adjacent bulges abut against each other.
[0013] Alternatively, as another form of heat exchanger involved in the aforementioned one side, it is characterized in that, in the manifold portions provided at both ends of the flow path forming portion of the heat exchange plate, the manifold bulge is provided only on one of the first plate component and the second plate component.
[0014] Based on this configuration, the shapes of the first plate component and the second plate component are quite different, making them easy to distinguish during manufacturing. Furthermore, it is easy to form a flow path that can suppress flow resistance.
[0015] Alternatively, as another form of heat exchanger involved in one side, it is characterized in that, in the manifold portions provided at both ends of the flow path forming portion of the heat exchange plate, the manifold bulges are provided on both sides of the first plate component and the second plate component.
[0016] Based on this configuration, the molds used in manufacturing can be standardized according to the shape of the plate components.
[0017] Alternatively, as another form of heat exchanger involved in one side, the communicating hole is provided at the opposite corner of the heat exchange plate.
[0018] According to this configuration, the first heat medium can flow with a small deviation at various points within the heat exchange plate. Furthermore, the second heat medium flowing outside the heat exchange plate can also be made to flow with a small deviation.
[0019] Alternatively, as another form of heat exchanger involved in the aforementioned one side, the bulge shape of the flow path bulge is approximately cuboid or approximately arc-shaped, and the long side direction of the flow path bulge in the first plate component and the second plate component is approximately symmetrical with respect to the flow direction of the first heat medium.
[0020] According to this configuration, heat exchange can be carried out effectively, and since the long side of the flow path bulge is approximately symmetrical, the directional change in the width direction is uniform, which can reduce the flow resistance of the first and second heat media.
[0021] Alternatively, as another aspect of the heat exchanger involved in the aforementioned side, the heat exchange core is characterized in that the core portion in the stacking direction has end plates at both ends, the end plates abutting against the manifold portion and / or the flow path bulge portion in the heat exchange plates located at the two ends.
[0022] According to this configuration, a second heat medium can also pass between the end plate and the core, enabling effective heat exchange.
[0023] Alternatively, as another form of the heat exchanger involved in the one side, the inner periphery of the housing is configured to be in contact with the outer periphery of the heat exchange core, and a second inlet serving as the inlet of the second heat medium and a second outlet serving as the outlet of the second heat medium are provided on the outer surface of the housing, having one or more second inlets and one or more second outlets.
[0024] With this configuration, heat exchange can be effectively carried out inside the casing. Furthermore, when there are multiple pipes for the inflow and outflow of the second heat medium, they can be directly installed in the heat exchanger.
[0025] Alternatively, it can be characterized in that, inside the housing, at any position in the stacking direction of the core, a partition portion is provided that is substantially parallel to the plate surface extending from the heat exchange plate, and the flow path of the second heat medium is separated by the partition portion in the stacking direction.
[0026] According to this configuration, the flow velocity of the second heat medium flowing in each of the multiple gaps in the core increases, thereby improving the heat transfer rate. This increases the heat exchange between the first and second heat media. Furthermore, the flow path length can also be increased. Additionally, if there is a large difference in distance from the inlet and outlet to the multiple gaps in the core, the flow rate of the second heat medium in closer and farther gaps can easily differ; however, since the distance difference is reduced, flow deviation can be suppressed. Therefore, the heat exchange efficiency is improved.
[0027] Alternatively, the heat exchange core may have the heat exchange plate and a partition plate having a closure portion provided on the heat exchange plate, wherein the partition plate has the closure portion provided on at least one of the first plate component and the second plate component in the communicating hole.
[0028] According to this configuration, the flow velocity of the first heat medium flowing inside the multiple heat exchange plates increases at each heat exchange plate, thereby improving the heat transfer rate. This increases the heat exchange volume between the first and second heat media. Furthermore, the flow path length can also be increased. Additionally, if there is a large difference in the distance from the inlet and outlet to the multiple heat exchange plates, the flow rate of the first heat medium can easily differ between nearby and distant heat exchange plates. However, since the difference in distance is reduced, the deviation of the first heat medium's flow can be suppressed. Furthermore, the sealing portion includes not only configurations that block the connecting holes with a cap-like sealing portion, but also configurations that use plates without connecting holes, and various other sealing configurations.
[0029] Alternatively, as another form of heat exchanger involved in one side, it is characterized by having a reinforcing member provided inside the manifold.
[0030] According to this configuration, since the joints are strengthened inside the manifold, it is difficult for leakage to occur due to the pressure of the first heat medium.
[0031] Alternatively, as another form of heat exchanger involved in one side, it is characterized in that a cylindrical member, which is substantially in contact with the inner circumferential surface of the stacked connecting holes, is inserted into the heat exchange core as the reinforcing member, and a plurality of holes are correspondingly provided in the cylindrical member and the plurality of manifolds arranged in the stacking direction.
[0032] This configuration allows for increased strength in the manifold section via the cylindrical component. Furthermore, the cylindrical component can be used as a guide during assembly to stack the heat exchange plates, thereby improving productivity.
[0033] According to the present invention, a heat exchanger with a high heat exchange rate can be obtained. Attached Figure Description
[0034] Figure 1 This is a perspective view of heat exchanger 1 in Example 1.
[0035] Figure 2 This is an exploded perspective view of the heat exchanger 1 in Example 1.
[0036] Figure 3 This is an exploded perspective view of the heat exchange core 11 in Example 1.
[0037] Figure 4 This is an exploded perspective view of the core 12 in Example 1.
[0038] Figure 5 This is an exploded perspective view used to illustrate the heat exchange plate 2.
[0039] Figure 6 This is a diagram used to illustrate heat exchange plate 2.
[0040] Figure 7 This is an exploded perspective view of the heat exchange plate 2 in Example 1.
[0041] Figure 8 This is a perspective view of the heat exchange plate 2 housed in the housing component 33 in Embodiment 1.
[0042] Figure 9 It is the heat exchange plate 2 housed in the housing component 33 in Embodiment 1.
[0043] Figure 10 This is a cross-sectional view of the lower part of the heat exchange core 11 in Embodiment 1.
[0044] Figure 11 This is a cross-sectional view of the manifold 24 in Embodiment 1.
[0045] Figure 12 This is an exploded perspective view of the heat exchanger 4 in Example 2.
[0046] Figure 13 This is an exploded perspective view of the heat exchange core 41 in Example 2.
[0047] Figure 14 This is the flow path of the second heat medium m2 in Example 2.
[0048] Figure 15 This is a partially exploded perspective view of the core 71 in Example 3.
[0049] Figure 16 This is an exploded perspective view of the heat exchange plate 81 in Example 4.
[0050] Figure 17 This is a perspective view of the heat exchanger 91 in Example 5.
[0051] Figure 18 This is a perspective view of the heat exchanger 92 in Example 6.
[0052] Figure 19 This is a perspective view used to illustrate the generally bow-shaped flow path bulge 253. Detailed Implementation
[0053] In this application, terms such as "up" and "down" are used. These terms are used to conveniently illustrate the relative relationships of the components in the accompanying drawings. If the heat exchanger in the embodiment is flipped upside down, then the "upper" described in this application becomes the "lower" when it is installed. In addition, if the heat exchanger is used with its surface tilted horizontally, then the up-down direction becomes the horizontal direction; if it is used with its surface tilted, then the up-down direction becomes the tilted up-down direction.
[0054] Furthermore, in this application, in the accompanying drawings, the flow direction x of the first heat medium m1 is represented as the x-direction, the width direction y perpendicular to the flow direction x is represented as the y-direction, and the vertical direction, i.e., the stacking direction z, perpendicular to both the flow direction x and the width direction y, is represented as the z-direction. The first heat medium m1 flows in a Z-shape within the heat exchange plate, but flows parallel to the side of the heat exchange plate as a whole, which is taken as the flow direction x.
[0055] Example 1
[0056] Figure 1 This is a diagram of the heat exchanger 1 of Embodiment 1, viewed from an obliquely upward angle. The heat exchanger 1 is approximately hexahedral in shape. A first inlet 34 for the inflow of a first heat medium m1 and a first outlet 35 for the outflow of the first heat medium m1 are provided at diagonal positions on the upper surface. Additionally, a second inlet 36 for the inflow of a second heat medium m2 and a second outlet 37 for the outflow of the second heat medium m2 are provided on the side of the heat exchanger 1. The second inlet 36 is located near the surface of the first outlet 35, but is positioned offset away from the first outlet 35. Similarly, the second outlet 37 is located near the surface of the first inlet 34, but is positioned offset away from the first inlet 34.
[0057] Figure 2This is a diagram showing the heat exchanger 1 of Embodiment 1 disassembled and viewed from an oblique top. A heat exchange core 11 is disposed within a cylindrical housing component 33. The heat exchange core 11, except for the pads 15, is housed within a housing composed of the housing component 33 and cover components 31 and 32. The main portion of the heat exchange core 11 is housed within the housing component 33 and covered by the cover components 31 and 32. Furthermore, the upper and lower parts of the housing component 33 are closed by the cover components 31 and 32 to form the housing. The cover component 31 has holes through which the pads 15 constituting the first inlet 34 and first outlet 35 of the heat exchange core 11 pass. Additionally, the housing component 33 has a second inlet 36 and a second outlet 37 protruding outwards. The cover component 32 does not have holes. The second inlet 36 and the second outlet 37 communicate with the interior of the housing component 33. The housing composed of the housing component 33, cover component 31, and cover component 32 is made of resin. Furthermore, the heat exchange core 11 is formed by integrally integrating aluminum components through aluminum brazing. In addition, the outer surface of the heat exchange core 11 is coated with resin to prevent the aluminum heat exchange core 11 from deteriorating due to the second heat medium m2.
[0058] Figure 3 This is an exploded view of the heat exchange core 11 of Embodiment 1, viewed from an obliquely upward perspective. The heat exchange core 11 has a core portion 12 formed by stacking multiple heat exchange plates 2. The upper surface of the core portion 12 is closed by an upper end plate 13, and the lower surface of the core portion 12 is closed by a lower end plate 14. A protrusion 131 is provided at a diagonal position on the upper end plate 13, and a hole 132 protruding downward to form a short cylinder is formed in the protrusion 131. Furthermore, a solder pad 15 is attached by brazing, corresponding to the position of the hole 132. In addition, a protrusion 141 is also provided at a diagonal position on the lower end plate 14, and a hole 142 protruding upward to form a short cylinder is formed in the protrusion 141. Both holes 142 are closed by a cover 16. The core portion 12 is formed by stacking multiple heat exchange plates 2.
[0059] Figure 4 This is an exploded view of the core 12 of Embodiment 1, viewed from an oblique top. The core 12 is formed by stacking multiple heat exchange plates 2 with the same configuration. The heat exchange plate 2 has a structure in which an upper side plate 21 (first plate component) and a lower side plate 22 (second plate component) are overlapped.
[0060] Figure 5This is a perspective view showing a change in the heat exchange plate 2, where the flow path bulges 211 in the upper side plate 21 and 221 in the lower side plate 22 of Embodiment 1 are enlarged and their number reduced. Along with this change, the lengths of the bulges 214 in the width direction y of the upper side plate 21 and the bulges 224 in the lower side plate 22, which constitute the flow path forming section side extension, are also shortened, etc. The upper side plate 21 and the lower side plate 22 have multiple bulges. In these bulges, a protrusion is formed on one side of the plate, and a recess is formed on the other side. The heat exchange plate 2, by... Figure 5 The upper side plate 21 and the lower side plate 22 are as follows Figure 6 They are formed by overlapping as shown.
[0061] Figure 6 The heat exchange plate 2 is shown in a way that reduces the number of flow path bulges 211 and 221 for ease of explanation. Figure 6 It is Figure 5 The diagram shows the heat exchange plate 2 with the upper side plate 21 and the lower side plate 22 overlapping. Figure 6 (a) is a side view viewed from the width direction y. Figure 6 (b) is a top view viewed from the stacking direction z. Figure 6 In (b), the hidden part is indicated by a dashed line. Figure 5 , Figure 6 In this illustration, the reference numerals of Embodiment 1 are used.
[0062] like Figure 6 As shown, the heat exchange plate 2 has a flow path forming portion 23 on the inner side of the flow direction x and manifold portions 24 formed at both ends of the flow direction x, partially overlapping with the flow path forming portion 23. The flow path forming portion 23 has a plurality of flow path protrusions 211 and 221, which protrude toward the outside of the heat exchange plate 2 and form a plurality of heat exchange flow paths for the first heat medium m1 inside.
[0063] like Figure 5 As shown, multiple flow path bulges 211 are formed upwards in the upper side plate 21. The bulge shape of each flow path bulge 211 is approximately cuboid. Each flow path bulge 211 extends along an inclined direction between the flow direction x and the width direction y. Furthermore, three columns of flow path bulges 211 are formed in the flow direction x and five rows in the width direction y. Figure 5 , 6 For ease of explanation, the number of columns and rows of the flow path bulge 211 in Embodiment 1 is as follows: Figure 3As shown in the diagram. This is also true for the flow path bulge 221 in the lower side plate 22, which will be described later. Additionally, a manifold bulge 212 is formed at one end of the upper side plate 21, pointing upwards. A protrusion 217 is provided at each opposite corner of the upper side plate 21, and a connecting hole 215 is provided in each protrusion 217. Furthermore, the area around one of the connecting holes 215 bulges out to form a periphery bulge 213. The flow path forming portion 23 of the periphery bulge 213 extends to form an extension bulge 214. The periphery bulge 213 and the extension bulge 214 are connected to form the manifold bulge 212. The lower side plate 22 does not bulge in the portion opposite to the manifold bulge 212, forming a flat manifold flat portion 228. Additionally, the area around the two connecting holes 215 forms a short cylindrical protrusion 216. In the upper side plate 21, a manifold bulge 212 is formed only at one end of the flow path forming part 23, while the other end does not bulge. The area around the connecting hole 215 protrudes in a short cylindrical shape to form a cylindrical part 216.
[0064] The lower side plate 22 has the same shape as the upper side plate 21. Figure 5 , Figure 6 In the middle, after being flipped over, it overlaps with the upper side plate 21, but the position of the protrusion 227 is opposite to that of the protrusion 217. In the lower side plate 22, multiple flow path bulges 221 are formed downwards. The bulging shape of each flow path bulge 221 is the same as that of each flow path bulge 211 in the upper side plate 21, which is approximately cuboid. The flow path bulges 221 are respectively provided along an inclined direction between the flow direction x and the width direction y. When the lower side plate 22 is overlapped with the upper side plate 21, this extension direction is intersecting the extension direction of the flow path bulges 211. Furthermore, in the state of the heat exchange plate 2, the flow path bulges 211 and the flow path bulges 221 overlap at their long side ends. Flow path bulges 221 are also formed in three columns in the flow direction x and five rows in the width direction y in the lower side plate 22. In addition, a manifold bulge 222 is formed downwards at one end of the lower side plate 22.
[0065] On the lower side plate 22, there is a protrusion 227 at each diagonal position, and a connecting hole 225 is provided in each protrusion 227. Furthermore, the periphery of one of the connecting holes 225 bulges out to form a periphery protrusion 223. In addition, the flow path forming part 23 of the periphery protrusion 223 extends to form an extension protrusion 224. Furthermore, the periphery protrusion 223 and the extension protrusion 224 are connected to form a manifold protrusion 222. The upper side plate 21 does not bulge in the part opposite to the manifold protrusion 222, forming a flat manifold flat part 218.
[0066] Furthermore, the area around the connecting hole 225 forms a short cylindrical protrusion 226. In the lower side plate 22, a manifold bulge 222 is formed only at one end of the flow path forming portion 23, and does not bulge at the other end. The area around the connecting hole 225 forms a short cylindrical protrusion 226.
[0067] With the heat exchange plate 2 in its current state, the manifold bulge 222 in the lower side plate 22 is located on the opposite side to the manifold bulge 212 in the upper side plate 21 in both the flow direction x and the stacking direction z. The manifold bulge 222 is formed such that the extended bulge 224 extends wider in the width direction y than the connecting hole 225 and the hole peripheral bulge 223. Two protrusions 227 are provided at opposite corners of the lower side plate 22, and each protrusion 227 is provided with a connecting hole 225. In addition, a hole peripheral bulge 223 is provided in one of the protrusions 227.
[0068] And, as Figure 6 As shown, the manifold section 24 includes connecting holes 215 and 225 that communicate with the adjacent heat exchange plate 2, bulging manifold protrusions 212 and 222, and flat manifold flat sections 218 and 228. Additionally, the manifold protrusions 212 and 222 are formed around the connecting holes 215 and 225, around the hole periphery portions 241, around the hole periphery portions 213 and 223, and around the flow path forming portions 23 of the connecting holes 215 and 225, extending in the width direction y-direction, towards the flow path forming portions 23.
[0069] As described above, at both ends of the heat exchange plate 2, in the upper side plate 21 and the lower side plate 22, there are periphery portions 241 around the connecting holes 215 and 225, and flow path forming portion side extensions 242 on the flow path forming portion 23 side of the periphery portions 241. The manifold bulge 212 faces the manifold flat portion 228, and the manifold bulge 222 faces the manifold flat portion 218. Furthermore, one flow path forming portion side extension 242 is formed by a portion of the manifold flat portion 228 and the extension bulge 214, while the other flow path forming portion side extension 242 is formed by a portion of the manifold flat portion 218 and the extension bulge 224.
[0070] The flow path forming section 242, which extends in the width direction y, communicates with multiple heat exchange flow paths of the flow path forming section, enabling the first heat medium m1 to flow. Furthermore, heat exchange occurs between the first heat medium m1 inside the heat exchange flow path and the second heat medium m2 outside the heat exchange plate 2. With the core 12 formed, the extension bulges 214 and 224 of adjacent heat exchange plates 2 are not aligned with each other, thereby ensuring the flow path of the second heat medium m2 flowing along the flow direction x.
[0071] like Figure 6As shown in the top view of (b), in the manifold 24, the first heat medium m1 extends from the connecting holes 215, 225 through the hole periphery portion 241 to the flow path forming portion side extension 242 in the width direction y, reaching the ends of multiple flow path bulges 211. Up to this point, it passes through the manifold bulge 222 of the lower side plate 22. Then, as indicated by the arrow, it is diverted to multiple heat exchange flow paths and enters each flow path bulge 211 of the upper side plate 21. Then, it advances obliquely relative to the flow direction x through the recess of the flow path bulge 211, reaches the end, and bends to enter the flow path bulge 221 of the lower side plate 22. Furthermore, it advances obliquely through the recess of the flow path bulge 221 and enters the end of the flow path bulge 211. The above operation is repeated, flowing along the flow direction x while meandering in the width direction y. Then, in the manifold 24, multiple flow paths converge at the flow path forming section side extension 242 as indicated by the arrows, converge at the orifice periphery section 241, and flow out from the connecting holes 215 and 225. The flow path forming section side extension 242 (extension bulge 214, extension bulge 224) is formed such that, at a position opposite to the flow direction x in which the first heat medium m1 flows in the heat exchange plate 2, it is wider than the connecting holes 215 and 225 and the orifice periphery bulges 213 and 223 in the width direction y perpendicular to the flow direction x. Furthermore, in Figure 5 , Figure 6 In the description, the first heat medium m1 flows in the three rows of heat exchange flow paths to perform heat exchange. Furthermore, the long side directions of the flow path bulges 211 and 221 are approximately symmetrical with respect to the flow direction x when they overlap. The flow path forming side extension 242 of the manifold 24 is preferably at least twice the width of the connecting holes 215 and 225 or at least twice the width of the hole peripheral bulges 213 and 223 of the hole peripheral portion 241 in the width direction y.
[0072] Additionally, when observing heat exchange plate 2 from the side, as... Figure 6 As indicated by the arrow in (a), the first heat medium m1 flows alternately in the recess of the flow path bulge 211 in the upper side plate 21 and the recess of the flow path bulge 221 in the lower side plate 22. The first heat medium m1 flows along the flow direction x while serpentinizing in the stacking direction z. In addition, in this application, the xyz directions do not distinguish between "+" and "-" directions.
[0073] The first heat medium m1 flows in a serpentine manner along the width direction y and the stacking direction z inside the heat exchange plate 2, thus maintaining a turbulent flow. Therefore, it is difficult to form velocity and temperature boundary layers, and the flow path is lengthened, promoting heat transfer. Furthermore, the connecting holes 215 and 225 for the inflow and outflow of the first heat medium m1, as well as the bulges 213 and 223 around the holes, are located diagonally on the heat exchange plate 2, making it difficult for flow velocities to differ in the multiple flow paths. Additionally, the second heat medium m2 passes between the two heat exchange plates 2 along the flow direction x; however, because the bulges 211 and 221 are inclined along the long side, the flow is turbulent, further promoting heat transfer.
[0074] Figure 7 This is an exploded view of the heat exchange plate 2 of Embodiment 1, viewed from an oblique, top-down perspective. The heat exchange plate 2 is composed of an upper side plate 21 and a lower side plate 22. In Embodiment 1, multiple flow path bulges 211 and 221 are used to form multiple heat exchange flow paths in the flow path forming section 23. Furthermore, in Embodiment 1, in… Figure 7 In the middle section, the flow path bulge 211, which overlaps with the extended bulge 224 surrounded by a circle, and the flow path bulge 221, which overlaps with the extended bulge 214, are bent at the overlapping portion in a manner extending along the flow direction x. Furthermore, the upper side plate 21 has a protrusion 217 extending in the flow direction x, and the lower side plate 22 has a protrusion 227 extending in the flow direction x. The two protrusions 217 of the upper side plate 21 have a connecting hole 215 and a cylindrical portion 216 facing upwards as a short cylinder. In one of the protrusions 217, the area around the connecting hole 215 bulges out to form a hole periphery bulge 213, which connects with the extended bulge 214 to form a manifold bulge 212. In addition, the two protrusions 227 of the lower side plate 22 have a cylindrical portion 226 facing downwards as a short cylinder. Furthermore, on one of the protrusions 227, the area around the connecting hole 225 bulges downward to form a periphery bulge 223, which connects with the extension bulge 224 to form a manifold bulge 222. The portions opposite to the manifold bulges 212 and 222 form flat manifold flat portions 228 and 218, and a portion of the flat manifolds 228 and 218 and the extension bulges 214 and 224 form a flow path forming side extension 242. The flow path forming side extension 242 is formed by extending laterally in the width direction y of the flow path forming portion 23 of the connecting holes 215 and 225.
[0075] Figure 8 This illustration shows the mounting configuration of the heat exchange plates 2 in Embodiment 1. Multiple stacked heat exchange plates 2 are disposed within a housing formed by cover members 31 and 32 and housing member 33. Figure 8 In the diagram, the housing component 33 is shown transparently, with only the bottommost heat exchange plate 2 shown. The heat exchange plates 2 are stacked, as shown... Figure 3The core 12 is formed as shown. A flow chamber 38 is provided between the core 12, which is composed of multiple heat exchange plates 2, and the housing component 33, allowing the second heat medium m2 to move along the stacking direction z within the flow chamber 38. The flow chamber 38 is formed in the non-extending portion of the protrusions 217 and 227 of the heat exchange plates 2 in the width direction y. The second heat medium m2, entering from the second inlet 36, enters the flow chamber 38 and then splits, passing between the multiple heat exchange plates 2. It then converges in the flow chamber 38 and flows out from the second outlet 37. For the protrusions 217 and 227, the first heat medium m1 flows in the internal connecting holes 215 and 225, and the portion not extending from the flow path forming portion 23 in the flow direction x is formed as the flow chamber 38. The second heat medium m2 flows within the flow chamber 38 along the stacking direction z.
[0076] Figure 9 Is Figure 8 The diagram, viewed from the stacking direction z, shows the upper surface of the heat exchange plate 2 housed inside the housing component 33, with the flow direction x-width direction y as a cross-section. The inner periphery of the housing component 33 is configured such that, except for the flow chamber 38, it is substantially in close contact with the outer periphery of the heat exchange core 11. Furthermore, the first heat medium m1 flows within the heat exchange plate 2, and the second heat medium m2 flows outside the heat exchange plate 2. Figure 9 The smaller arrows indicate the flow path of the second heat medium m2 outside the heat exchange plates 2. The second heat medium m2 enters from the second inlet 36 and is diverted from the flow chamber 38 to the spaces between the heat exchange plates 2. Then, as indicated by the arrows, it repeatedly diverts and merges between the bulging flow path bulges 211 and 221, flowing outside the heat exchange plates 2 in a serpentine manner. The second heat medium m2 flows between two adjacent heat exchange plates 2. Then, it merges in the flow chamber 38 and flows out from the second outlet 37.
[0077] By providing multiple flow path bulges 211 and 221, a large area for heat exchange can be obtained. Furthermore, the line (not shown) connecting the diagonally opposite second flow inlet 36 and second flow outlet 37 intersects with the line (not shown) connecting the two diagonally opposite corner protrusions 217. Therefore, the flow chamber 38 can be formed by avoiding the protrusions 217. Moreover, with the second flow inlet 36 and second flow outlet 37 positioned diagonally, the second heat medium m2 flows uniformly through the gaps in the heat exchange core 11. Additionally, in Figure 9 In this process, the first heat medium m1 and the second heat medium m2 flow in opposite directions along the flow direction x. Therefore, heat exchange can be carried out effectively.
[0078] Figure 10This is a cross-sectional view of the heat exchange core 11. Only the lower part of the heat exchange core 11 is shown. Parts of the extension bulge 214 and the flow path bulge 211 abut against parts of the extension bulge 224 and the flow path bulge 221 of the adjacent heat exchange plate 2 on the upper side. Additionally, the lower end plate 14 abuts against the extension bulge 224 and the flow path bulge 221 of the lower side plate 22 in the lowest heat exchange plate 2 of the core 12. Although not shown, this is also true near the upper end plate 13 in the upper part of the heat exchange core 11. The upper end plate 13 abuts against the upper surface of the extension bulge 214 and the flow path bulge 211 in the uppermost upper side plate 21 of the core 12. Adjacent heat exchange plates 2 also abut against each other in the same way as the lower part. By having parts of the bulges abut against parts of the bulges of adjacent plates or parts of the end plates, high pressure resistance can be achieved in the heat exchange core 11.
[0079] Figure 11 The cross-section of the manifold portion 24 of the heat exchange core 11 is shown. As shown in the circle, the cylindrical portion 216 of the upper side plate 21 overlaps and is located outside the cylindrical portion 226 of the lower side plate 22 in the adjacent heat exchange plate 2. The radius of the cylindrical portion 216 is slightly different from that of the cylindrical portion 226, so they fit together in this part. With this structure, positioning can be achieved when the heat exchange plates 2 are stacked. In addition, a high degree of airtightness of the manifold portion 24 can be obtained by fitting together. The fitting part is fixed by brazing, so the first heat medium m1 and the second heat medium m2 will not mix due to leakage from the manifold portion 24. Furthermore, by doubling the overlap of the manifold portion 24 with the cylindrical portions 216 and 226, the wall thickness becomes twice, so high pressure resistance can be obtained against leakage and the like.
[0080] Example 2
[0081] Figure 12This is a diagram showing the heat exchanger 4 of Embodiment 2 disassembled and viewed from an obliquely upward perspective. In Embodiment 2, a first inlet 64 and a first outlet 65 are located at both ends of the heat exchanger 4 in the stacking direction z, and a second inlet 66 and a second outlet 67 are arranged in the same direction in the flow direction x of the heat exchanger 4. Similar to Embodiment 1, a heat exchange core 41 is provided in a cylindrical housing component 63. The housing component 63 is enclosed at the top and bottom by an upper side cover component 61 and a lower side cover component 62 to form a housing. The housing component 63, the upper side cover component 61, and the lower side cover component 62 are made of resin. Furthermore, the heat exchange core 41 is formed by integrally bonding aluminum components using brazing. A first inlet 64 for the inflow of the first heat medium m1 and a first outlet 65 for the outflow of the first heat medium m1 are located at the upper and lower parts of the heat exchange core 41, respectively, opposite to each other across the housing component 63. Therefore, holes for the pads 45 to pass through are provided in both the upper side cover component 61 and the lower side cover component 62. In addition, the second inlet 66 for the second heat medium m2 to flow in and the second outlet 67 for the second heat medium m2 to flow out are arranged in the same side as the first inlet 64 and the first outlet 65 in the cylindrical shell component 63 in the stacking direction z.
[0082] Figure 13 This is an exploded view of the heat exchange core 41 of Embodiment 2, viewed from an obliquely upward angle. Pads 45 are provided on both sides of the heat exchange core 41 in the stacking direction z. Furthermore, the two pads 45 are positioned at the same angle in the flow direction x and the width direction y. The core 42 comprises a sub-core 421 formed by two stacked heat exchange plates 5 and includes a partition plate 53. The heat exchange plate 5 has the same configuration as the heat exchange plate 2 of Embodiment 1. The partition plate 53 is sandwiched between the two sub-cores 421. The protrusion 534 of the partition plate 53 at one of the angles where the pads 45 are located has a closing portion 536, which blocks the connecting hole with a cover to prevent the first heat medium m1 from passing through. A connecting hole 535 is provided in the protrusion 534 at the other angle away from the pads 45. A pad 45 is installed in one of the holes 432 in the two protrusions 431 of the upper end plate 43, and the other is closed by a cover 47. The hole 442 in the lower end plate 44 is the same. In the core 42, the manifold bulges and manifold flat sections of the adjacent heat exchange plates 5 are stacked in an opposing manner.
[0083] The first heat medium m1, flowing in from the first inlet 64, enters the upper through-hole 461 of the core 42 and is diverted to the multiple heat exchange plates 5 in the upper sub-core 421. At this time, it does not flow directly to the lower through-hole 464 due to the closed portion 536 of the partition plate 53. The closed portion 536 of the partition plate 53 is a structure with a hole in the upper side plate and a cover on the lower side plate, otherwise identical to the heat exchange plate 5. Therefore, a heat exchange flow path is also formed in the partition plate 53 for the first heat medium m1 to flow through. After passing through the heat exchange plate 5 and the partition plate 53, the first heat medium m1 reaches the through-hole 462 on the opposite side. Then, it flows downward through the connecting hole 535 of the partition plate 53. The first heat medium m1 enters the multiple heat exchange plates 5 in the lower sub-core 421 from the lower through-hole 463. The first heat medium m1 flows in the heat exchange flow path of the heat exchange plate 5 in the opposite direction to the upper part. Then, it flows out from the first outlet 65 through the through hole 464.
[0084] Figure 14 The flow of the second heat medium m2 inside the heat exchanger 4 of Embodiment 2 is shown. Arrows indicate the flow of the second heat medium m2. Inside the housing component 63, a partition 631, approximately parallel to the plate surface extending from the partition plate 53, is provided at the center in the stacking direction z, dividing the space into two flow chambers 681 and 683. Furthermore, the housing component 63 is formed by being closed at the top and bottom by an upper side cover component 61 and a lower side cover component 62. The second heat medium m2, entering from the second inlet 66 located at the lower part of the heat exchanger 4, reaches flow chamber 681. The upper part of flow chamber 681 is closed by the partition 631, therefore, it is diverted in the sub-core 421 located below the partition 631 and flows between the heat exchange plates 5. Then, it merges in flow chamber 682 and flows upwards. Figure 14 In the heat exchange core 41, the multiple plates described in the flow chamber 682 are located on the inner side, and the second heat medium m2 can flow in the flow chamber 682 along the stacking direction z. Then, the heat exchange plates 5 in the upper sub-core 421 flow between each other, merge in the flow chamber 683 above the partition 631, and flow out from the second outlet 67. For the flow path of the second heat medium m2, the flow chambers 681 and 683 are separated in the stacking direction z by the partition 631, and in the heat exchange core 41, the second heat medium m2 flows in opposite directions above and below the partition 631. In Embodiment 2, the first heat medium m1 and the second heat medium m2 also flow in opposite directions in the sub-core 421, thus resulting in excellent heat exchange efficiency.
[0085] In Embodiment 2, a partition 631 is provided at the center of the stacking direction z inside the housing component 63; however, it can be provided at any position in the stacking direction z. Preferably, its position is the same as that of the partition plate. In Embodiment 2, there is one partition plate; however, if the number of stacked heat exchange plates is large, it is preferable to provide multiple partition plates. In this case, it is preferable that the partitions 631 of the housing component 63 also have the same number at the same height in the z direction as the partition plates. If there are two partition plates, the other partition is provided on the flow chamber 682 side, and the second flow inlet and second flow outlet are provided on the surface opposite to the housing component.
[0086] Example 3
[0087] Figure 15 This is a partial exploded view of the core 71 in the heat exchanger 7 (not shown) of Embodiment 3. Multiple heat exchange plates 72 are stacked on the core 71. Furthermore, in Embodiment 3, a generally cylindrical cylindrical member 74 is inserted as a reinforcing member into the through holes 73 formed by the holes in the protrusions 721 and 722. The heat exchanger 7 is identical to the heat exchanger 1 of Embodiment 1, except for the configuration of the cylindrical member 74. In the cylindrical member 74, multiple transversely elongated holes 741 are provided along the stacking direction z, parallel to the planes in the flow direction x and the width direction y. The holes 741 are provided in the direction that forms the flow path for the first heat medium m1. In the cylindrical member 74, multiple transversely elongated holes 741 are arranged along the stacking direction z, matching the flow path of the heat exchange plates 72. The cylindrical component 74 is in approximately contact with the inner circumferential surface of the through hole 73, that is, the inner circumferential surface of the cylindrical portions 723 and 724 provided in the connecting holes of the protrusion 721 and / or the protrusion 722, and is brazed. Therefore, high strength can be obtained in the core 71. In addition, during assembly, the cylindrical component 74 can be used as a guide to stack multiple heat exchange plates 72, thereby improving productivity. At this time, by making the outer shape of the cylindrical component 74 slightly smaller than the inner diameter of the manifold, the resistance when stacking the heat exchange plates 72 is reduced, thereby improving assemblability. Furthermore, by expanding the cylindrical component 74 after stacking the heat exchange plates 72, the gap between it and the manifold can be filled to ensure tightness and fix the heat exchange plates 72, thereby further improving productivity. Alternatively, as a variation, the hole 741 can be partially cut off from the cylindrical shape and connected in the stacking direction z, and the cylindrical component 74 can be replaced with a component that appears C-shaped when viewed from the stacking direction.
[0088] Example 4
[0089] Figure 16This is an exploded view of the heat exchange plate 81 in the heat exchanger 8 (not shown) of Embodiment 4. The heat exchanger 8 is identical to the heat exchanger 1 of Embodiment 1, except that a C-shaped component 84 is used as a reinforcing member. Similar to Embodiment 1, a cylindrical portion 821, an extended bulge 822, and a perforation bulge 823 are formed by punching an upward portion on the upper side plate 82 (first plate component), and a cylindrical portion 831, an extended bulge 832, and a perforation bulge 833 are formed by punching a downward portion on the lower side plate 83 (second plate component). The C-shaped component 84 is inserted into the inner side of the perforation bulge 823 and the inner side of the perforation bulge 833, in a direction opening toward the extended bulges 822 and 832. Then, with the upper side plate 82 and the lower side plate 83 overlapping, the C-shaped component 84 is brazed to the upper side plate 82 and the lower side plate 83. In embodiment 4, the C-shaped component 84 is firmly joined to the portions 823 and 833 around the hole, and the wall thickness on the side is further increased, thus enabling high strength to be obtained against the pressure of the first heat medium m1.
[0090] Example 5
[0091] Figure 17 The installation states of the inlet and outlet in Embodiment 5 are shown. In the heat exchanger 91 of Embodiment 5, the first inlet 911, the first outlet 912, the second inlet 913, and the second outlet 914 are all installed on the upper side cover component 915. Other aspects are the same as those of the heat exchanger 1 of Embodiment 1. When assembling the heat exchanger 9 into the device, the pipes installed at the first inlet 911, the first outlet 912, the second inlet 913, and the second outlet 914 all face the same direction, thus enabling miniaturization of the device.
[0092] Example 6
[0093] Figure 18 The installation state of the inlet and outlet of the heat exchanger 92 in Embodiment 6 is shown. The heat exchanger 92 of Embodiment 6 differs from that of Embodiment 1 in that it has two second inlets 923. Including the first inlet 921, the first outlet 922, and the second outlet 924, the other configurations are the same as those of the heat exchanger 1 in Embodiment 1. In Embodiment 6, when the heat exchanger 92 is assembled into the device, the inflow of the second heat medium m2 from multiple cooling or heating objects can be achieved without external branching. Furthermore, in Embodiment 6, an example with two inlets and one outlet in the x-direction is shown, but this is not a limitation; it can also be configured with multiple inlets and multiple outlets, and the inlets and outlets can protrude in any of the x, y, or z directions.
[0094] <Other>
[0095] In the manifold sections of the above embodiments, one manifold bulge is formed on both the upper side plate (first plate component) and the lower side plate (second plate component). However, two manifold bulges may also be provided on one of the upper and lower side plates. The flow path of the second heat medium m2 is... Figure 6 On the left side (outflow side) of (b), the flow path bulge 221 is located away from the connecting holes 215 and 225. The flow bypasses the cylindrical portions 216 and 226 that connect the heat exchange plates 2 by tilting the flow path bulge 221. By setting the two manifold bulges on one of the upper or lower side plates, the flow of the second heat medium m2 that bypasses the cylindrical portions 216 and 226 can be formed even on the right side (inflow side).
[0096] In addition, the upper flow path bulge and the lower flow path bulge in the above embodiments are generally cuboids, but they can also be generally arc-shaped or other shapes. Figure 19 This is a diagram of the upper side plate 25 (first plate component) viewed from an oblique angle to illustrate the generally arc-shaped bulge of the flow path. In Embodiment 1, in Figure 5 The flow path bulge, which is roughly rectangular in shape, is described in the text, but in Figure 19 The generally arc-shaped flow path bulge will be described below. The upper side plate 25 has an arc-shaped flow path bulge 253 that bulges out in a generally arc shape with a predetermined width. Other aspects are the same as the upper side plate 21 in Embodiment 1. Although not shown, the lower side plate can also be a plate having a generally arc-shaped flow path bulge similar to that of the upper side plate 25. In this way, the first heat medium m1 can flow smoothly, and the flow resistance can be reduced.
[0097] In an embodiment, such as Figure 6 As shown in (b), the protrusions 217 and 227, and the connecting holes 215 and 225 are located diagonally opposite each other at the ends in the width direction y. However, if the protrusions 217 and 227, and the connecting holes 215 and 225 are also formed at the ends on the same side in the width direction y, then the upper side plate can be used as a lower side plate by flipping it up and down and rotating it 180° about the stacking direction z. In addition, if the protrusions 217 and 227, and the connecting holes 215 and 225 are formed at the center or at both ends of the width direction y, forming a symmetrical shape in the width direction y, then the upper side plate and the lower side plate can be formed with the same shape. Furthermore, by forming them with the same shape, manufacturing costs can be reduced.
[0098] Furthermore, in the above embodiments, the upper and lower flow path bulges extend in a straight line at an angle on the planes in the flow direction x and width direction y. However, the flow path bulges extending in an arc shape along their long side can also be continuous as arcs curving in opposite directions. If the arcs of the upper and lower flow path bulges are configured to be continuous without bends, flow resistance can be reduced.
[0099] In the above embodiments, the exterior of the heat exchange core is coated with resin. However, coating can also be performed by plating. The resin or plating coating can suppress the deterioration of the heat exchange core caused by a second heat medium such as water. Alternatively, the exterior of the heat exchange core may not be coated. Furthermore, the heat exchange core can be made of metals such as stainless steel or titanium, or resin.
[0100] In Embodiment 1, the second inlet 36 and the second outlet 37, which serve as the inlet and outlet of the second heat medium m2, are provided on opposite surfaces of the housing member 33. In Embodiment 2, the second inlet 66 and the second outlet 67 are provided on the same surface of the housing member 33. In Embodiment 6, the second inlet 913 and the second outlet 914 are provided on the upper cover member 915. However, the second inlet and the second outlet can simply be provided on any one of the approximately hexahedral outer surfaces of the housing formed by the housing member and the cover member.
[0101] In the above embodiments, the cover over the heat exchange core is made of resin, but it can also be made of metals such as stainless steel or aluminum. In the case of aluminum, it can be brazed integrally with the heat exchange core at the same time, thus improving productivity.
[0102] In addition, in the above embodiments, flow path bulges and the like are formed by punching out the upper and lower surfaces of the plate, which bulge upwards or downwards. However, convex and concave portions can also be formed by other methods.
[0103] Explanation of reference numerals in the attached figures
[0104] x: Flow direction; y: Width direction; z: Stacking direction; m1: First heat medium; m2: Second heat medium; 1: Heat exchanger; 11: Heat exchange core; 12: Core; 13: Upper end plate; 131: Protrusion; 132: Hole; 14: Lower end plate; 141: Protrusion; 142: Hole; 15: Pad; 16: Cover; 2: Heat exchange plate; 21: Upper plate; 211: Flow path bulge; 212: Manifold bulge; 213: Hole periphery bulge; 214: Extension bulge; 215: Connecting hole; 216: Cylindrical part; 217: Protrusion; 218: Manifold flat part; 22: Lower plate; 221: Flow path bulge; 222: Manifold bulge; 2 23: Peripheral bulge of the hole; 224: Extended bulge; 225: Connecting hole; 226: Cylindrical part; 227: Protrusion; 228: Flat part of the manifold; 23: Flow path forming part; 24: Manifold part; 241: Peripheral part of the hole; 242: Extended part on the side of the flow path forming part; 25: Upper side plate; 253: Bow-shaped flow path bulge; 31: Cover component; 32: Cover component; 33: Shell component; 34: First flow inlet; 35: First flow outlet; 36: Second flow inlet; 37: Second flow outlet; 38: Flow chamber; 4: Heat exchanger; 41: Heat exchange core; 42: Core; 421: Secondary core; 43: Upper end plate; 431: Protrusion; 432: Hole; 44: Lower side End plate; 441: Protrusion; 442: Hole; 45: Pad; 461: Through hole; 462: Through hole; 463: Through hole; 464: Through hole; 47: Cover; 5: Heat exchange plate; 53: Partition plate; 534: Protrusion; 535: Connecting hole; 536: Sealing part; 61: Upper cover component; 62: Lower cover component; 63: Shell component; 631: Partition; 64: First flow inlet; 65: First flow outlet; 66: Second flow inlet; 67: Second flow outlet; 681: Flow chamber; 682: Flow chamber; 683: Flow chamber; 7: Heat exchanger; 71: Core; 72: Heat exchange plate; 721: Protrusion; 722: Protrusion; 723: Cylindrical part ; 724: Cylindrical section; 73: Through hole; 74: Cylindrical component; 741: Hole section; 8: Heat exchanger; 81: Heat exchange plate; 82: Upper side plate; 821: Cylindrical section; 822: Extended bulge section; 823: Hole periphery bulge section; 83: Lower side plate; 831: Cylindrical section; 832: Extended bulge section; 833: Hole periphery bulge section; 84: C-shaped component; 91: Heat exchanger; 911: First flow inlet; 912: First flow outlet; 913: Second flow inlet; 914: Second flow outlet; 915: Upper side cover component; 92: Heat exchanger; 921: First flow inlet; 922: First flow outlet; 923: Second flow inlet; 924: Second flow outlet.
Claims
1. A heat exchanger, characterized in that, The heat exchanger includes a heat exchange core in which a first heat medium flows and a shell covering the heat exchange core, for heat exchange between the first heat medium and a second heat medium flowing between the outside of the heat exchange core and the inside of the shell. The heat exchange core includes a core portion on which heat exchange plates, formed by overlapping a first plate component and a second plate component, are stacked in the stacking direction. The heat exchange plate has a flow path forming section and a manifold section. The flow path forming section has multiple flow path bulges, which bulge outward toward the heat exchange plate and form a heat exchange flow path for the first heat medium inside. The manifold has a communication hole that communicates with the adjacent heat exchange plate manifold, and a flow path forming portion extending from the flow path forming portion side of the communication hole. The flow path forming section side extension is connected to multiple heat exchange flow paths. The manifold section is formed by a manifold bulge that bulges out from one of the first plate component and the second plate component, and a manifold flat section that is flat on the other side. In the core, the manifold bulges and flat sections of adjacent heat exchange plates are stacked opposite each other. The flow path bulge abuts against the flow path bulge of the adjacent heat exchange plate and / or the manifold bulge. The plurality of flow path bulges extend along an inclined direction between the flow direction and the width direction. When the heat exchange plate is formed, the extension directions of one flow path bulge intersect with those of the other flow path bulge and overlap each other only at the ends in the long side direction.
2. The heat exchanger according to claim 1, characterized in that, In the manifold sections located at both ends of the flow path forming portion of the heat exchange plate, the manifold bulge is provided only on one of the first plate component and the second plate component.
3. The heat exchanger according to claim 1, characterized in that, In the manifold section located at both ends of the flow path forming portion of the heat exchange plate, the manifold bulge is provided on both sides of the first plate component and the second plate component.
4. The heat exchanger according to any one of claims 1 to 3, characterized in that, The connecting hole is located at the opposite corner of the heat exchange plate.
5. The heat exchanger according to any one of claims 1 to 3, characterized in that, The bulge shape of the flow path bulge is approximately rectangular or approximately arc-shaped. The long side of the flow path bulge in the first plate component and the second plate component is approximately symmetrical with respect to the flow direction of the first heat medium.
6. The heat exchanger according to any one of claims 1 to 3, characterized in that, The heat exchange core has end plates at both ends of the core portion in the stacking direction. The end plate abuts against the manifold portion and / or the flow path bulge portion in the heat exchange plates located at both ends.
7. The heat exchanger according to any one of claims 1 to 3, characterized in that, The inner periphery of the housing is configured to connect with the outer periphery of the heat exchange core. A second inlet, serving as the inlet for the second heat medium, and a second outlet, serving as the outlet for the second heat medium, are disposed on the outer surface of the housing. It has one or more second flow inlets and one or more second flow outlets.
8. The heat exchanger according to claim 7, characterized in that, Inside the housing, at any position along the stacking direction of the core, a partition portion is provided that is substantially parallel to the plate surface extending from the heat exchange plate. The flow path of the second heat medium is separated by the partition in the stacking direction.
9. The heat exchanger according to any one of claims 1 to 3, characterized in that, The heat exchange core includes the heat exchange plate and a partition plate with a sealing portion provided on the heat exchange plate. The partition plate has the closure portion provided in the communicating hole in at least one of the first plate component and the second plate component.
10. The heat exchanger according to any one of claims 1 to 3, characterized in that, Reinforcing components are provided inside the manifold section.
11. The heat exchanger according to claim 10, characterized in that, A cylindrical component, which is substantially in contact with the inner circumferential surface of the stacked connecting holes, is inserted into the heat exchange core as the reinforcing component. The cylindrical component and the plurality of manifolds arranged in the stacking direction are provided with a plurality of holes respectively.