Heat exchanger
The heat exchanger design with strategically placed communication portions and varying hole sizes addresses refrigerant stagnation, enhancing efficiency and temperature uniformity in heat exchange.
Patent Information
- Application Number
- JP2024078676
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-11-27
Smart Images
Figure 2025173202000001_ABST
Abstract
Description
[Technical Field]
[0001] The present disclosure relates to a heat exchanger mounted on a vehicle. [Background technology]
[0002] For example, Patent Document 1 describes a cooling device mounted on a vehicle. The cooling device includes a cooling section and a partition plate. A space is formed inside the cooling section. The partition plate divides the space inside the cooling section into an upper space on the top surface side of the cooling section and a lower space on the bottom surface side. A plurality of refrigerant passage holes are formed in the partition plate. In the cooling device, refrigerant is supplied to the lower space and flows into the upper space through the plurality of refrigerant passage holes. The refrigerant is then discharged from the upper space. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-278130 Summary of the Invention [Problem to be solved by the invention]
[0004] However, the cooling device described in Patent Document 1 has a problem in that the refrigerant tends to stagnate upstream of the most upstream refrigerant passage hole among the plurality of refrigerant passage holes in the upper space.
[0005] It should be noted that such problems are not limited to cooling devices configured to perform heat exchange between a refrigerant and an object, but can also occur in heating devices configured to perform heat exchange between a heat medium and an object, for example.
[0006] One aspect of the present disclosure provides a technique for suppressing stagnation of a heat exchange medium in a heat exchanger mounted on a vehicle. [Means for solving the problem]
[0007] One aspect of the present disclosure is a heat exchanger mounted on a vehicle, comprising a first plate, a second plate, a partition, and an upstream wall. The first and second plate are plate-shaped. The first plate is configured to face an object. The second plate faces the first plate from the side opposite the object, and forms an internal space between the first plate and the second plate. The internal space includes a supply space to which a heat exchange medium is supplied, and a circulation space that is continuous with the supply space and through which the heat exchange medium flows. The partition divides the circulation space into a first space on the first plate side and a second space on the second plate side. The upstream wall is provided between the partition and the first plate, and separates the supply space from the first space. At least one communication portion is formed in the partition and the upstream wall. The at least one communication portion in the partition connects the first space to the second space. At least one communication portion of the upstream wall portion communicates the supply space with the first space.
[0008] According to this configuration, it is possible to suppress the accumulation of the heat exchange medium in the heat exchanger mounted on the vehicle.
[0009] One aspect of the present disclosure may further include a downstream wall portion. The downstream wall portion is provided between the partition portion and the second plate portion and closes the downstream end of the second space. The at least one communication portion of the partition portion may include a plurality of communication portions. The downstream wall portion may be provided so as to contact, from the downstream side, an edge of the communication portion located most downstream among the plurality of communication portions.
[0010] According to this configuration, it is possible to further suppress the accumulation of the heat exchange medium in the heat exchanger mounted on the vehicle.
[0011] In one embodiment of the present disclosure, the at least one communication portion of the partition portion may include a first communication portion and a second communication portion downstream of the first communication portion, and the opening area of the second communication portion may be larger than the opening area of the first communication portion.
[0012] With this configuration, the efficiency of heat exchange with the object can be further improved.
[0013] One aspect of the present disclosure may further include a third plate portion and a fourth plate portion. The third plate portion and the fourth plate portion are plate-shaped. The third plate portion and the fourth plate portion connect the first plate portion and the second plate portion and, together with the first plate portion and the second plate portion, form an internal space. At least one communication portion of the partition portion may include a first communication portion and a second communication portion. The second communication portion is farther from the center line of the partition portion in the direction from the third plate portion to the fourth plate portion than the first communication portion. The opening area of the second communication portion may be larger than the opening area of the first communication portion.
[0014] With this configuration, the flow of the heat exchange medium can be promoted in the region in the first space that is relatively close to the third plate portion or the fourth plate portion.
[0015] In one aspect of the present disclosure, the second space may have a flow path cross-sectional area that decreases downstream in at least a portion of the range along the flow direction of the heat exchange medium in the flow space.
[0016] With this configuration, the amount of heat exchange medium flowing into the first space can be made more uniform. [Brief explanation of the drawings]
[0017] [Figure 1] FIG. 1 is a schematic diagram showing a heat exchanger of the first embodiment in a state where it is mounted on a vehicle. [Figure 2] FIG. 2 is a perspective view of the heat exchanger of the first embodiment. [Figure 3] 3A and 3B are top and bottom views of the heat exchanger of the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3A. [Figure 5] Fig. 5A is a cross-sectional view taken along line VA-VA in Fig. 3A, and Fig. 5B is a cross-sectional view taken along line VB-VB in Fig. 3A. [Figure 6] FIG. 6 is a partial enlarged view of FIG. 3A. [Figure 7] FIG. 7 is a cross-sectional view illustrating the flow of the heat exchange medium in the heat exchanger of the first embodiment. [Figure 8] FIG. 8 is a top view of the heat exchanger of the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] FIG. 10 is a top view of the heat exchanger of the third embodiment. [Figure 11] FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. [Figure 12] FIG. 12 is a top view of the heat exchanger of the fourth embodiment. [Figure 13] Fig. 13A is a cross-sectional view taken along line XIIIA-XIIIA in Fig. 12. Fig. 13B is a cross-sectional view taken along line XIIIB-XIIIB in Fig. 12. Fig. 13C is a cross-sectional view taken along line XIIIC-XIIIC in Fig. 12. DETAILED DESCRIPTION OF THE INVENTION
[0018] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings.
[0019] [1. First embodiment] [1-1.Configuration] The heat exchanger 100 shown in Fig. 1 is mounted on a vehicle. The heat exchanger 100 is, for example, a cooler configured to cool a battery 200 of the vehicle by exchanging heat with the battery 200. The battery 200 may be, for example, for driving the vehicle or for generating power. The battery 200 corresponds to an example of an object.
[0020] In a vehicle, the battery 200 is disposed, for example, below a floor panel that constitutes the floor of the vehicle compartment. The heat exchanger 100 is disposed, for example, below the battery 200. The heat exchanger 100 may, for example, be in direct contact with the heat exchange surface of the battery 200, or may be in indirect contact with the heat exchange surface of the battery 200 via a thermally conductive material 300 or a bottom plate of the battery case. The thermally conductive material 300 is a member having thermal conductivity. The battery case is a case that houses the battery 200. The heat exchange surface of the battery 200 is a surface of the outer surface of the battery 200 that is configured to be in direct or indirect contact with the heat exchanger 100. In the example shown in FIG. 1 , the bottom surface of the battery 200 corresponds to the heat exchange surface of the battery 200. The temperature of the battery 200 is controlled by heat exchange between the heat exchanger 100 and the battery 200.
[0021] As shown in FIG. 2, the heat exchanger 100 includes an outer shell member 110 and a partition member 120.
[0022] Outer shell member 110 is a member having an internal space. Hereinafter, the internal space of outer shell member 110 will be referred to as internal space S0. Outer shell member 110 is made of a material such as metal. Specific examples of metal include aluminum and stainless steel.
[0023] Outer shell member 110 has a ceiling wall portion 111, a bottom wall portion 112, and first to fourth side wall portions 113-116.
[0024] As shown in FIG. 1, the ceiling wall 111 is a plate-like portion that forms the upper surface of the outer shell member 110. The ceiling wall 111 is configured to face the battery 200. As shown in FIG. 2, the ceiling wall 111 of this embodiment is flat. The ceiling wall 111 has an elongated shape when viewed from the front. Specifically, the ceiling wall 111 has a rectangular shape with two short sides that protrude outward in an L-shape (i.e., a hexagonal shape) when viewed from the front. Note that a front view of a plate-like portion such as the ceiling wall 111 means a view from the outward direction of the plane of the plate-like portion. The same applies hereinafter.
[0025] 1, the bottom wall portion 112 is a plate-like portion that forms the lower surface of the outer shell member 110. The bottom wall portion 112 has the same shape and size as the ceiling wall portion 111. The bottom wall portion 112 faces the ceiling wall portion 111 from the side opposite to the battery 200 side. A gap is provided between the ceiling wall portion 111 and the bottom wall portion 112.
[0026] 2, the first to fourth side wall portions 113 to 116 are plate-like portions that form the side surfaces of the outer shell member 110. The first to fourth side wall portions 113 to 116 connect the opposing outer peripheral edges of the top wall portion 111 and the bottom wall portion 112. The first to fourth side wall portions 113 to 116 are connected in this order around the entire periphery of the top wall portion 111 and the bottom wall portion 112.
[0027] The first side wall 113 and the third side wall 115 have the same shape and size. In this embodiment, the first side wall 113 and the third side wall 115 are flat. Furthermore, the first side wall 113 and the third side wall 115 are rectangular in shape when viewed from the front. The first side wall 113 and the third side wall 115 face each other in the short-side direction of the ceiling wall 111. The short-side direction of the ceiling wall 111 can also be said to be the direction from the first side wall 113 to the third side wall 115.
[0028] The second side wall portion 114 and the fourth side wall portion 116 have the same shape and size. In this embodiment, the second side wall portion 114 and the fourth side wall portion 116 are plate-shaped with a V-shaped cross section. The second side wall portion 114 and the fourth side wall portion 116 face each other in the longitudinal direction of the ceiling wall portion 111. The longitudinal direction of the ceiling wall portion 111 can also be said to be the direction from the second side wall portion 114 to the fourth side wall portion 116. The second side wall portion 114 and the fourth side wall portion 116 face each other with the corners of the V-shaped cross section facing outward from the outer shell member 110.
[0029] The space defined by the ceiling wall 111, the bottom wall 112, and the first to fourth side walls 113 to 116 corresponds to the internal space S0. In other words, the ceiling wall 111, the bottom wall 112, and the first to fourth side walls 113 to 116 form the internal space S0.
[0030] A supply port 117 is formed in the ceiling wall portion 111 at an end portion on the second side wall portion 114 side. The supply port 117 is an opening for supplying the heat exchange medium flowing through the supply pipe P1 to the internal space S0. Specific examples of the heat exchange medium include refrigerants such as cooling water and cooling oil. Furthermore, a discharge port 118 is formed in the ceiling wall portion 111 at an end portion on the fourth side wall portion 116 side. The discharge port 118 is an opening for discharging the heat exchange medium from the internal space S0 to the discharge pipe P2. The supply port 117 and the discharge port 118 are provided in a central region in the short direction of the ceiling wall portion 111.
[0031] The heat exchange medium is supplied to the internal space S0 through a supply port 117, flows through the internal space S0, and is discharged through a discharge port 118. That is, as shown in Fig. 4, the internal space S0 includes a supply space S1, a circulation space S2, and a discharge space S3.
[0032] The supply space S1 is a space to which the heat exchange medium is supplied.
[0033] The flow space S2 is a space that continues from the supply space S1 and is a space through which the heat exchange medium flows. Hereinafter, the flow direction F of the heat exchange medium in the flow space S2 will be simply referred to as the flow direction F. The upstream side and downstream side of the flow direction F will also be simply referred to as the upstream side and downstream side. The flow direction F can also be said to be the direction from the supply port 117 to the discharge port 118. The flow direction F is along the ceiling wall portion 111. In this embodiment, the flow direction F coincides with the longitudinal direction of the ceiling wall portion 111.
[0034] Hereinafter, the direction perpendicular to the flow direction F and along the ceiling wall 111 will be referred to as the width direction W. In this embodiment, the width direction W coincides with the short-side direction of the ceiling wall 111. As shown in FIG. 2 , the width direction W can also be referred to as the direction from the first side wall 113 to the third side wall 115.
[0035] 4, the discharge space S3 is a space that continues from the flow space S2 and is a space into which the heat exchange medium is discharged. The discharge space S3 is continuous with the supply space S1 via the flow space S2. The supply space S1 and the discharge space S3 are not directly continuous with each other.
[0036] The partition member 120 is a member disposed in the internal space S0. The partition member 120 preferably has low thermal conductivity. The material of the partition member 120 is, for example, resin. The partition member 120 has a partition main body portion 121, an upstream wall portion 122, and a downstream wall portion 123.
[0037] The partition main body 121 is a plate-like portion that divides the flow space S2 into a first space S2a on the ceiling wall 111 side and a second space S2b on the bottom wall 112 side. As shown in FIG. 2, in this embodiment, the partition main body 121 is flat. Moreover, the partition main body 121 has a rectangular shape when viewed from the front. As shown in FIG. 1, the partition main body 121 is large enough to encompass the heat exchange surface of the battery 200.
[0038] The partition main body 121 is disposed between the ceiling wall 111 and the bottom wall 112 so as to face both of them. As shown in FIG. 2 , both ends of the partition main body 121 in the width direction W are joined to the first side wall 113 and the third side wall 115. A gap is provided between the partition main body 121 and the ceiling wall 111, and between the partition main body 121 and the bottom wall 112. The space surrounded by the ceiling wall 111, the partition main body 121, the first side wall 113, and the third side wall 115 corresponds to the first space S2a. The space surrounded by the bottom wall 112, the partition main body 121, the first side wall 113, and the third side wall 115 corresponds to the second space S2b. The flow path cross-sectional areas of the first space S2a and the second space S2b are both constant in the flow direction F.
[0039] A gap is provided between the end face of the partition main body 121 on the supply port 117 side in the flow direction F and the second side wall 114. The portion of the internal space S0 upstream of the end face of the partition main body 121 corresponds to the supply space S1.
[0040] A gap is provided between the end face of the partition main body 121 on the discharge port 118 side in the flow direction F and the fourth side wall 116. The portion of the internal space S0 downstream of the end face of the partition main body 121 corresponds to the discharge space S3.
[0041] A plurality of communication holes 124 are formed in the partition main body 121. The plurality of communication holes 124 are, for example, round holes. The plurality of communication holes 124 communicate with the first space S2a and the second space S2b. Burring that protrudes toward the ceiling wall 111 may be formed around the entire periphery of each edge of the plurality of communication holes 124. When such burring is formed, the protruding angle of the burring is not particularly limited and may be, for example, 90°.
[0042] 3A, the plurality of communication holes 124 form a plurality of rows L11 to L19 adjacent to one another in the flow direction F. In this embodiment, first to ninth rows L11 to L19 are arranged in this order from the upstream side to the downstream side. Of the plurality of communication holes 124, the plurality of communication holes 124 included in the same row L11 to L19 are the same distance from the supply port 117. Specifically, the distance from the supply port 117 to each communication hole 124 is the distance from the center point of the opening surface of the supply port 117 to the center point of the opening surface of each communication hole 124. The plurality of communication holes 124 included in the same row L11 to L19 are formed on the same arc with the supply port 117 as the center.
[0043] The plurality of communication holes 124 included in the same row L11 to L19 are formed symmetrically with respect to the center line C1. Specifically, the center line C1 is the center line C1 in the width direction W of the partition main body 121. The center line C1 in the width direction W of the partition main body 121 can also be said to be a line connecting the midpoints of the partition main body 121 in the width direction W. Of the plurality of communication holes 124 included in the same row L11 to L19, the further away from the center line C1 the communication holes 124 are, the larger the opening area.
[0044] In this embodiment, the center line C1 overlaps with an imaginary straight line connecting the center points of the opening surfaces of the supply ports 117 and the discharge ports 118 in a top view of the heat exchanger 100 (i.e., a front view of the ceiling wall portion 111). For this reason, it can be said that, among the multiple communication holes 124 included in the same row L11 to L19, the further the communication holes 124 are from the imaginary straight line, the larger the opening area of the communication holes 124.
[0045] In this embodiment, the first to ninth rows L11 to L19 each include five communication holes 124. For convenience, the five communication holes 124 included in each row L11 to L19 will also be referred to as the first to fifth communication holes 124a to 124e in the following description and in FIGS. 3A and 3B. The first to fifth communication holes 124a to 124e are aligned in this order from the first side wall portion 113 toward the third side wall portion 115. The third communication hole 124c is formed on the center line C1. Compared to the third communication hole 124c, the second communication hole 124b and the fourth communication hole 124d have larger opening areas. The first communication hole 124a and the fifth communication hole 124e have even larger opening areas.
[0046] Of the multiple communication holes 124 that are formed to overlap when viewed from the flow direction F, the more downstream the communication holes 124 are, the larger the opening area. In the present embodiment, in each of the rows L11 to L19, the first communication holes 124a, the second communication holes 124b, the third communication holes 124c, the fourth communication holes 124d, and the fifth communication holes 124e correspond to communication holes 124 that are formed to overlap when viewed from the flow direction F. For example, all of the third communication holes 124c included in each of the rows L11 to L19 are formed on the center line C1. When comparing these third communication holes 124c, the opening area of the third communication holes 124c gradually increases from the first row L11 to the ninth row L19.
[0047] As shown in FIG. 1, the upstream wall 122 is a portion provided between the partition main body 121 and the ceiling wall 111. The upstream wall 122 is, for example, in the form of a plate such as a flat plate. The upstream wall 122 extends from the upper surface of the partition main body 121 to the ceiling wall 111 at the upstream end of the partition main body 121. The upper surface of the partition main body 121 corresponds to the surface of the outer surface of the partition main body 121 facing the ceiling wall 111. As shown in FIG. 2, both ends of the upstream wall 122 in the width direction W are joined to the first side wall 113 and the third side wall 115. The upstream side surface of the upstream wall 122 is seamlessly connected to the upstream end surface of the partition main body 121. As shown in FIG. 4, the supply space S1 and the first space S2a are separated by the upstream wall 122. Specifically, the upstream end of the first space S2a is closed by the upstream wall portion 122.
[0048] As shown in FIG. 5A, a plurality of slits 125 are formed in the upstream wall portion 122. The opening surfaces of the plurality of slits 125 are, for example, rectangular. The plurality of slits 125 communicate between the supply space S1 and the first space S2a. The plurality of slits 125 are formed symmetrically with respect to a center line C2. Specifically, the center line C2 is the center line C2 in the width direction W of the upstream wall portion 122. The center line C2 in the width direction W of the upstream wall portion 122 can also be said to be a line connecting midpoints of the upstream wall portion 122 in the width direction W. The slits 125 that are farther away from the center line C2 have larger opening areas.
[0049] The center line C2 intersects with the above-described center line C1. In the present embodiment, the center line C1 overlaps with an imaginary line connecting the center point of the opening surface of the supply port 117 and the center point of the opening surface of the discharge port 118 in a top view of the heat exchanger 100. Therefore, it can be said that the slits 125 farther from the supply port 117 have larger opening areas.
[0050] In this embodiment, two slits are formed on either side of the center line C2, that is, a total of four slits 125. The opening areas of the two slits 125 adjacent to each other on the side of the center line C2 and the opposite side of the two slits 125 adjacent to each other on either side of the center line C2 are larger than the opening areas of the two slits 125 adjacent to each other on the side of the center line C2.
[0051] 3A, the total opening area of the plurality of slits 125 is smaller than the total opening area of the plurality of communication holes 124 included in the first row L11, which is the row on the most upstream side. The total opening area of the plurality of slits 125 or communication holes 124 is the sum of the opening areas of the plurality of slits 125 or communication holes 124.
[0052] 6, for example, burring protruding toward the downstream side may be formed on the edge of each of the plurality of slits 125. When such burring is formed, the protruding angle of the burring is not particularly limited, and may be, for example, 90° or an angle inclined in a direction away from the center line C1.
[0053] As shown in Fig. 4, the upstream end of the first space S2a is blocked by the upstream wall portion 122, but the upstream end of the second space S2b is not blocked. In other words, the second space S2b is in communication with the supply space S1. As shown in Fig. 5A, the flow path cross-sectional area at the upstream end of the second space S2b is larger than the total opening area of the multiple slits 125. In other words, the flow path cross-sectional area at the upstream end of the second space S2b is the opening area of the opening defined by the upstream end of the partition main body 121, the bottom wall portion 112, the first side wall portion 113, and the third side wall portion 115.
[0054] As shown in FIG. 1, the downstream wall 123 is a portion provided between the partition main body 121 and the bottom wall 112. The downstream wall 123 is, for example, columnar. The downstream wall 123 extends from the lower surface of the partition main body 121 to the bottom wall 112 at the downstream end of the partition main body 121. The lower surface of the partition main body 121 corresponds to the surface of the outer surface of the partition main body 121 that faces the bottom wall 112. As shown in FIG. 3B, both end portions of the downstream wall 123 in the width direction W are joined to the first side wall 113 and the third side wall 115. As shown in FIG. 4, the downstream side surface of the downstream wall 123 is seamlessly connected to the downstream end surface of the partition main body 121.
[0055] 3B, the downstream wall portion 123 is provided so as to contact the edge of the most downstream communication hole 124 from the downstream side. The most downstream communication hole 124 here refers to the communication hole 124 whose opening surface extends to the most downstream side. In this embodiment, the first communication hole 124a and the fifth communication hole 124e included in the ninth row L19 correspond to the most downstream communication hole 124 here.
[0056] As shown in Fig. 4, the second space S2b and the discharge space S3 are separated by the downstream wall portion 123. Specifically, the downstream end of the second space S2b is closed by the downstream wall portion 123. As shown in Fig. 5B, the downstream wall portion 123 does not have a communication portion that communicates the second space S2b and the discharge space S3.
[0057] 4, the downstream end of the second space S2b is closed by the downstream wall portion 123, but the downstream end of the first space S2a is not particularly closed. In other words, the first space S2a is in communication with the discharge space S3.
[0058] [1-2. Effect] As indicated by the black arrows in FIG. 7 , in the heat exchanger 100, the heat exchange medium flowing through the supply pipe P1 is supplied to the supply space S1 via the supply port 117. The heat exchange medium flows from the supply space S1 into the second space S2b. Then, the heat exchange medium flows from the second space S2b into the first space S2a through the multiple communication holes 124. The heat exchange medium that has flowed into the first space S2a flows downstream within the first space S2a while exchanging heat with the battery 200 that is disposed so as to face the ceiling wall portion 111. Then, the heat exchange medium flows from the first space S2a into the discharge space S3 and is discharged to the discharge pipe P2 via the discharge port 118.
[0059] Here, when the heat exchange medium flows into the first space S2a through the multiple communication holes 124, it diffuses into the first space S2a from each communication hole 124 and flows downstream within the first space S2a as a whole. For this reason, it is thought that the heat exchange medium is likely to stagnate within the first space S2a upstream of the most upstream communication hole 124. In this embodiment, it is thought that the heat exchange medium is likely to stagnate within the first space S2a upstream of the first row L11, which is the most upstream row.
[0060] Therefore, in the heat exchanger 100, a plurality of slits 125 are formed in the upstream wall portion 122. The plurality of slits 125 connect the supply space S1 and the first space S2a. Therefore, a portion of the heat exchange medium supplied to the supply space S1 flows into the first space S2a through the plurality of slits 125. That is, a portion of the heat exchange medium supplied to the supply space S1 flows into the first space S2a upstream of the most upstream communication hole 124. Therefore, the heat exchange medium is prevented from accumulating upstream of the most upstream communication hole 124 in the first space S2a.
[0061] [1-3.Effects] According to the first embodiment described above in detail, the following effects can be obtained.
[0062] (1a) In the heat exchanger 100, a plurality of slits 125 are formed in the upstream wall portion 122. With this configuration, a portion of the heat exchange medium supplied to the supply space S1 can be made to flow into the first space S2a upstream of the most upstream communication hole 124. Therefore, it is possible to prevent the heat exchange medium from accumulating upstream of the most upstream communication hole 124 in the first space S2a. As a result, it is possible to improve the heat exchange efficiency with the battery 200. For example, when the heat exchange medium is a refrigerant, it is possible to improve the cooling efficiency of the battery 200.
[0063] (1b) In the heat exchanger 100, the heat exchange medium flows from the supply space S1 into the second space S2b. The downstream end of the second space S2b is closed by the downstream wall portion 123. For this reason, it is considered that the heat exchange medium is likely to stagnate downstream of the most downstream communication hole 124 in the second space S2b.
[0064] Therefore, in the heat exchanger 100, the downstream wall portion 123 is provided so as to contact the edge of the most downstream communication hole 124 from the downstream side. With this configuration, the heat exchange medium that has reached the downstream wall portion 123 in the second space S2b collides with the downstream wall portion 123, changes direction, and can be made to more easily flow toward the most downstream communication hole 124. Therefore, the heat exchange medium that has reached the downstream wall portion 123 in the second space S2b can be made to more easily flow into the first space S2a. This makes it possible to prevent the heat exchange medium from accumulating in the second space S2b.
[0065] (1c) In the first space S2a, the flow of the heat exchange medium tends to slow down in areas closer to the first side wall portion 113 or the third side wall portion 115. In other words, in the first space S2a, the flow of the heat exchange medium tends to slow down in areas farther from the center line C1.
[0066] Therefore, in the heat exchanger 100, the communication holes 124 included in the same rows L11 to L19 are formed so that the opening area of the communication holes 124 increases as the communication holes 124 are farther from the center line C1. With this configuration, the communication holes 124 farther from the center line C1 allow a larger amount of heat exchange medium to pass through. In other words, the more the communication holes 124 are farther from the center line C1 (i.e., the closer the communication holes 124 are to the first side wall portion 113 or the third side wall portion 115), the more heat exchange medium can flow into the first space S2a from the second space S2b. Therefore, the flow of the heat exchange medium can be promoted in the region of the first space S2a that is relatively close to the first side wall portion 113 or the third side wall portion 115. As a result, the efficiency of heat exchange with the battery 200 can be further improved.
[0067] (1d) The heat exchange medium exchanges heat with the battery 200 while flowing downstream through the first space S2a. Therefore, the temperature of the heat exchange medium may change while flowing downstream through the first space S2a. For example, if the heat exchange medium is a refrigerant (i.e., if the battery 200 is cooled by heat exchange), the temperature of the heat exchange medium may increase while flowing downstream through the first space S2a.
[0068] Therefore, in the heat exchanger 100, the multiple communication holes 124 formed to overlap when viewed from the flow direction F are designed so that the opening area of the communication hole 124 on the downstream side is larger. With this configuration, the more downstream the communication hole 124, the more heat exchange medium can pass through it. In other words, the more heat exchange medium can flow into the first space S2a from the second space S2b, the more downstream the region. Therefore, it is possible to more easily maintain a constant temperature of the heat exchange medium flowing through the first space S2a. As a result, the efficiency of heat exchange with the battery 200 can be further improved.
[0069] (1e) The partition main body 121 is large enough to encompass the heat exchange surface of the battery 200. The flow path cross-sectional area of the first space S2a is constant in the flow direction F.
[0070] With this configuration, it is possible to arrange the battery 200 so that the entire heat exchange surface of the battery 200 overlaps with the partition main body 121 when viewed from the front of the ceiling wall 111. In this case, the battery 200 exchanges heat with the heat exchange medium flowing in the first space S2a, not in the supply space S1 or the discharge space S3. Since the flow path cross-sectional area of the first space S2a is constant in the flow direction F, it is easy to maintain a uniform temperature of the battery 200.
[0071] (1f) In the heat exchanger 100, the supply port 117 and the discharge port 118 are formed in the ceiling wall portion 111. With this configuration, the thickness of the outer shell member 110 can be made smaller than in a configuration in which the supply port 117 and the discharge port 118 are formed in any of the first to fourth side walls 113 to 116. The thickness of the outer shell member 110 is the dimension from the outer surface of the ceiling wall portion 111 to the outer surface of the bottom wall portion 112 (i.e., the dimension of the outer shell member 110 in the directions perpendicular to both the flow direction F and the width direction W). Therefore, the heat exchanger 100 can be made smaller.
[0072] [1-4. Correspondence] In the first embodiment, the ceiling wall 111, the bottom wall 112, the first side wall 113, and the third side wall 115 correspond to examples of first to fourth plates, respectively. The partition main body 121 corresponds to an example of a partition. The communication hole 124 corresponds to an example of a communication portion formed in a partition. The slit 125 corresponds to an example of a communication portion formed in the upstream wall.
[0073] [2. Second Embodiment] [2-1.Configuration] The second embodiment has the same basic configuration as the first embodiment, so differences will be described below. Note that the same reference numerals as those in the first embodiment indicate the same configuration, and reference is made to the preceding description.
[0074] As shown in FIGS. 8 and 9, a heat exchanger 100A of the second embodiment includes an outer shell member 110A and a partition member 120A.
[0075] Shell member 110A of the second embodiment has substantially the same configuration as shell member 110 of the first embodiment. However, shell member 110A of the second embodiment has a rectangular parallelepiped outer shape. That is, in the second embodiment, top wall portion 111A, bottom wall portion 112A, and first to fourth side wall portions 113A to 116A are all rectangular in shape when viewed from the front.
[0076] The partition member 120A of the second embodiment differs from the partition member 120 of the first embodiment in that it has a partition main body 121A instead of the partition main body 121 described above.
[0077] The partition main body 121A of the second embodiment has substantially the same configuration as the partition main body 121 of the first embodiment. However, as shown in Fig. 9, the partition main body 121A of the second embodiment is thicker on the downstream side. The thickness here refers to the dimension in a direction perpendicular to both the flow direction F and the width direction W. Furthermore, the partition main body 121A of the second embodiment has a downstream end face joined to the fourth side wall 116A.
[0078] In the second embodiment, similarly to the first embodiment, the first space S2a has a constant flow path cross-sectional area in the flow direction F. On the other hand, the second space S2b has a flow path cross-sectional area that decreases toward the downstream side over the entire range in the flow direction F. In other words, the second space S2b has a flow path cross-sectional area that decreases toward the downstream side.
[0079] 8, in the second embodiment, the plurality of communication holes 124 formed in the partition main body 121A are arranged in a plurality of rows L21 to L29. The plurality of communication holes 124 included in the same row L21 to L29 are at the same position in the flow direction F. The plurality of communication holes 124 included in the same row L21 to L29 are formed on a straight line extending in the width direction W. Furthermore, in the second embodiment, the opening areas of the plurality of communication holes 124 are the same regardless of the row L21 to L29.
[0080] [2-2. Effects] According to the second embodiment described above in detail, the same effects as (1a), (1b), (1e) and (1f) above can be obtained, and further, the following effect can be obtained.
[0081] (2a) In the heat exchanger 100A of the second embodiment, the opening areas of the multiple communication holes 124 are the same. The cross-sectional area of the flow path of the second space S2b decreases toward the downstream side. This configuration makes it easier to uniformly distribute the amount of heat exchange medium flowing into the first space S2a through each communication hole 124.
[0082] [2-3. Correspondence] In the second embodiment, the ceiling wall 111A, the bottom wall 112A, the first side wall 113A, and the third side wall 115A correspond to examples of first to fourth plates, respectively. The partition main body 121A corresponds to an example of a partition. The communication hole 124 corresponds to an example of a communication portion formed in the partition. The slit 125 corresponds to an example of a communication portion formed in the upstream wall.
[0083] 3. Third Embodiment [3-1.Configuration] The third embodiment has the same basic configuration as the second embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the second embodiment indicate the same configuration, and reference is made to the preceding description.
[0084] As shown in FIGS. 10 and 11, a heat exchanger 100B of the third embodiment includes an outer shell member 110B and a partition member 120B.
[0085] Shell member 110B of the third embodiment has substantially the same configuration as shell member 110A of the second embodiment. However, as shown in Fig. 11 , shell member 110B of the third embodiment has supply ports 117 and discharge ports 118 formed not only in top wall portion 111A but also in bottom wall portion 112B. Supply ports 117 and discharge ports 118 in bottom wall portion 112B are formed to face supply ports 117 and discharge ports 118 in top wall portion 111A.
[0086] The partition member 120B of the third embodiment differs from the partition member 120A of the second embodiment in that it has two partition main bodies 121A and two upstream wall portions 122.
[0087] In the partition main body 121B, the two partition main bodies 121A are arranged between the ceiling wall 111A and the bottom wall 112B, facing each other with a gap between them. One of the two partition main bodies 121A faces the ceiling wall 111A. The other of the two partition main bodies 121A faces the bottom wall 112B.
[0088] The two partition bodies 121A divide the flow space S2 into three spaces: a first space S2a on the ceiling wall 111A side, a second space S2b on the bottom wall 112B side of the first space S2a, and a third space S2c on the bottom wall 112B side of the second space S2b. The first space S2a is a space surrounded by the ceiling wall 111A, the partition body 121A on the ceiling wall 111A side, the first side wall 113A, and the third side wall 115A. The second space S2b is a space surrounded by the two partition bodies 121A, the first side wall 113A, and the third side wall 115A. The third space S2c is a space surrounded by the bottom wall portion 112B, the partition main body portion 121A on the bottom wall portion 112B side, the first side wall portion 113A, and the third side wall portion 115A.
[0089] One of the two upstream wall portions 122 is provided between the partition main body portion 121A on the ceiling wall portion 111A side and the ceiling wall portion 111A. The upstream wall portion 122 extends from the upper surface of the partition main body portion 121A on the ceiling wall portion 111A side to the ceiling wall portion 111A. The upstream wall portion 122 separates the supply space S1 and the first space S2a. Specifically, the upstream wall portion 122 closes the upstream end of the first space S2a.
[0090] The other of the two upstream walls 122 is provided between the partition main body 121A on the bottom wall 112B side and the bottom wall 112B. The upstream wall 122 extends from the lower surface of the partition main body 121A on the bottom wall 112B side to the bottom wall 112B. The upstream wall 122 separates the supply space S1 and the third space S2c. Specifically, the upstream wall 122 closes the downstream end of the third space S2c.
[0091] The downstream wall 123 is provided between the partition main body 121A on the ceiling wall 111A side and the bottom wall 112B. Specifically, the downstream wall 123 extends from the lower surface of the partition main body 121A on the ceiling wall 111A side to the upper surface of the partition main body 121A on the bottom wall 112B side. The downstream wall 123 closes the downstream end of the second space S2b.
[0092] [3-2. Effects] According to the third embodiment described above in detail, the same effects as (1a), (1b), (1e) and (2a) above can be obtained, and further, the following effects can be obtained.
[0093] (3a) A heat exchanger 100B according to the third embodiment has two partition main bodies 121A. A plurality of communication holes 124 are formed in each of the two partition main bodies 121A.
[0094] With this configuration, a portion of the heat exchange medium that has flowed into the second space S2b passes through the plurality of communication holes 124 formed in the partition main body 121A on the ceiling wall 111A side and flows into the first space S2a. Another portion of the heat exchange medium that has flowed into the second space S2b passes through the plurality of communication holes 124 formed in the partition main body 121A on the bottom wall 112B side and flows into the third space S2c. Therefore, even when the battery 200 is placed in a position facing the bottom wall 112B, as well as in a position facing the ceiling wall 111A, heat exchange with the battery 200 can be more effectively performed. In other words, the heat exchanger 100B can also be used effectively as a so-called double-sided heat exchanger.
[0095] (3b) In the heat exchanger 100B of the third embodiment, the supply port 117 and the discharge port 118 are formed in the ceiling wall portion 111A and the bottom wall portion 112B. This configuration allows the thickness of the outer shell member 110B to be reduced compared to a configuration in which the supply port 117 and the discharge port 118 are formed in any of the first to fourth side wall portions 113A to 116A. In other words, the same effect as in (1f) above can be obtained.
[0096] [3-3. Correspondence] In the third embodiment, the ceiling wall 111A, the bottom wall 112B, the first side wall 113A, and the third side wall 115A correspond to examples of first to fourth plates, respectively. The partition main body 121A on the ceiling wall 111A side corresponds to an example of a partition. The communication hole 124 formed in the partition main body 121A on the ceiling wall 111A side corresponds to an example of a communicating portion formed in a partition. The slit 125 formed in the upstream wall 122 on the ceiling wall 111A side corresponds to an example of a communicating portion formed in an upstream wall.
[0097] [4. Fourth Embodiment] [4-1.Configuration] The fourth embodiment has the same basic configuration as the second embodiment, and therefore the differences will be described below. Note that the same reference numerals as those in the second embodiment indicate the same configuration, and reference is made to the preceding description.
[0098] As shown in FIG. 12, a heat exchanger 100C of the fourth embodiment includes an outer shell member 110C and a partition member 120C.
[0099] Shell member 110C of the fourth embodiment has substantially the same configuration as shell member 110A of the second embodiment. As described above, top wall portion 111A of the second embodiment has supply port 117 formed at the end on the second side wall portion 114A side and discharge port 118 formed at the end on the fourth side wall portion 116A side. In contrast, top wall portion 111C of the fourth embodiment has supply port 117 and discharge port 118 formed side by side in a central region in the longitudinal direction of top wall portion 111C. Supply port 117 is located on the first side wall portion 113A side. Discharge port 118 is located on the third side wall portion 115A side.
[0100] The partition member 120C of the fourth embodiment has a partition main body portion 121C, an upstream wall portion 122C, and an intermediate wall portion 123C.
[0101] The partition main body 121C of the fourth embodiment has substantially the same configuration as the partition main body 121A of the second embodiment. However, all of the end faces of the partition main body 121C of the fourth embodiment that are continuous with the outer periphery are joined to the outer shell member 110C. Specifically, these end faces are joined to the first to fourth side wall portions 113A to 116A.
[0102] 13A, in addition to a plurality of communication holes 124, a partition main body 121C of the fourth embodiment is formed with an inlet hole 126. The inlet hole 126 is formed in a position facing the supply port 117 in the partition main body 121C. The size of the opening surface of the inlet hole 126 is equal to the size of the opening surface of the supply port 117, for example.
[0103] The upstream wall portion 122C is provided between the partition main body portion 121C and the ceiling wall portion 111C. As shown in FIGS. 12 and 13A, the upstream wall portion 122C extends from a portion surrounding the inlet hole 126 on the upper surface of the partition main body portion 121C to the ceiling wall portion 111C. The upstream wall portion 122C is tubular. For example, if the inlet hole 126 is a circular hole, the upstream wall portion 122C is cylindrical. A plurality of slits 125 are formed in the upstream wall portion 122C. The plurality of slits 125 are formed, for example, around the entire circumference of the upstream wall portion 122C at intervals from one another.
[0104] 13A to 13C, in the fourth embodiment, the area surrounded by the upstream wall 122C in the space between the partition main body 121C and the ceiling wall 111C corresponds to the supply space S1. The area overlapping with the opening of the discharge port 118 in the space between the partition main body 121C and the ceiling wall 111C corresponds to the discharge space S3. The area other than the supply space S1 and the discharge space S3 in the space between the partition main body 121C and the ceiling wall 111C corresponds to the first space S2a. The space between the partition main body 121C and the bottom wall 112A corresponds to the second space S2b.
[0105] In the fourth embodiment, as in the second embodiment, the partition main body 121C separates the flow space S2 into a first space S2a on the ceiling wall 111C side and a second space S2b on the bottom wall 112A side. The upstream wall 122C separates the supply space S1 from the first space S2a. A plurality of communication holes 124 connect the first space S2a to the second space S2b. A plurality of slits 125 connect the supply space S1 to the first space S2a. Furthermore, the inlet hole 126 connects the supply space S1 to the second space S2b. In other words, the second space S2b is continuous with the supply space S1 via the inlet hole 126.
[0106] As shown in FIGS. 12 and 13B, the intermediate wall portion 123C is a plate-shaped portion provided between the partition main body portion 121C and the ceiling wall portion 111C. The intermediate wall portion 123C extends from a portion between the supply port 117 and the discharge port 118 on the upper surface of the partition main body portion 121C to the ceiling wall portion 111C. The portion between the supply port 117 and the discharge port 118 on the upper surface of the partition main body portion 121C is a portion between a portion of the partition main body portion 121C facing the supply port 117 (i.e., the portion where the inlet hole 126 is formed) and a portion facing the discharge port 118. The intermediate wall portion 123C extends in the longitudinal direction of the ceiling wall portion 111C. Both end surfaces of the intermediate wall portion 123C in the longitudinal direction of the ceiling wall portion 111C face the second side wall portion 114A and the fourth side wall portion 116A with a gap therebetween.
[0107] As shown in FIG. 13A, in the heat exchanger 100C, the heat exchange medium supplied to the supply space S1 through the supply port 117 flows into the second space S2b through the inlet 126. The heat exchange medium then flows into the first space S2a through the plurality of communication holes 124. As shown in FIG. 12, for example, the heat exchange medium that flows into the first space S2a through one of the plurality of communication holes 124 that is closer to the supply port 117 than the intermediate wall 123C (i.e., the first side wall 113A side) flows between the intermediate wall 123C and the first side wall 113A in a direction away from the communication hole 124. The heat exchange medium passes through a gap between the intermediate wall 123C and the second side wall 114A or the fourth side wall 116A and moves toward the third side wall 115A. The heat exchange medium flows between the middle wall portion 123C and the third side wall portion 115A in a direction approaching the discharge port 118. As described above, the heat exchanger 100C of the fourth embodiment has a first flow direction F1 that flows around the middle wall portion 123C from the second side wall portion 114A side, and a second flow direction F2 that flows around the middle wall portion 123C from the fourth side wall portion 116A side. Both the first flow direction F1 and the second flow direction F2 correspond to directions from the supply port 117 toward the discharge port 118.
[0108] As described above, the partition main body 121C has a plurality of communication holes 124. The more downstream the communication holes 124 are in the first flow direction F1 or the second flow direction F2, the larger the opening area of the communication holes 124. Note that, as shown in Fig. 13C, no communication holes 124 are formed in the portion of the partition main body 121C facing the discharge port 118.
[0109] [4-2. Effect] The heat exchanger 100C of the fourth embodiment has the same functions as the heat exchanger 100A of the second embodiment, as follows.
[0110] A portion of the heat exchange medium supplied to the supply space S1 flows into the first space S2a through the multiple slits 125. That is, a portion of the heat exchange medium supplied to the supply space S1 flows into the first space S2a upstream of the most upstream communication hole 124 in the first flow direction F1 or the second flow direction F2. This prevents the heat exchange medium from accumulating upstream of the most upstream communication hole 124 in the first space S2a (i.e., around the upstream wall portion 122C).
[0111] [4-3. Effects] According to the fourth embodiment described above in detail, the same effects as those in (1a) and (1d) to (1f) above can be obtained.
[0112] [4-4. Correspondence] In the fourth embodiment, the ceiling wall 111C, the bottom wall 112A, the first side wall 113A, and the third side wall 115A correspond to examples of the first to fourth plates, respectively. The partition main body 121C corresponds to an example of a partition. The communication hole 124 corresponds to an example of a communication portion formed in the partition. The slit 125 corresponds to an example of a communication portion formed in the upstream wall.
[0113] 5. Other Embodiments Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take on various forms.
[0114] (5a) In the first embodiment, the opening areas of the communication holes 124 included in the same rows L11 to L19 are larger as the communication holes 124 are farther from the center line C1. However, there is no particular limitation on the size of the opening areas of adjacent communication holes 124. For example, the opening areas of the communication holes included in the same row may include communication holes having the same opening area as adjacent communication holes. For example, in the first embodiment, the opening areas of the second to fourth communication holes 124b to 124d may be the same, and the opening areas of the first communication hole 124a and the fifth communication hole 124e may be larger than these opening areas. Furthermore, for example, as in the second to fourth embodiments, all communication holes included in the same row may have the same opening area.
[0115] (5b) The shape of the plurality of communication holes is not particularly limited. For example, the plurality of communication holes may be round holes as exemplified in the above embodiment, or may be rectangular holes such as square holes. Furthermore, for example, in addition to or instead of the plurality of communication holes, a communication portion whose opening surface extends in a predetermined direction may be formed in the partition main body.
[0116] (5c) In the above embodiment, the partition main body portions 121, 121A, 121B, and 121C are formed with a plurality of communication holes 124. However, the number of communication portions, such as communication holes, formed in the partition main body portions is not particularly limited. The number of communication portions may be one or more.
[0117] (5d) In the first to third embodiments, the slits 125 have larger opening areas as they are further from the center line C2. However, there is no particular limitation on the size of the opening areas of adjacent slits. For example, all the slits may have the same opening area.
[0118] (5e) In the above embodiment, a plurality of slits 125 having rectangular openings are formed in the upstream wall portion 122, 122C. However, in addition to or instead of the plurality of slits, a communication portion having a predetermined opening shape may be formed in the upstream wall portion. In this case, the opening shape of the communication portion may be, for example, circular or polygonal.
[0119] (5f) In the above embodiment, multiple slits 125 are formed in the upstream wall portions 122, 122C. However, the number of communication portions such as slits formed in the upstream wall portions is not particularly limited. The number of communication portions may be one or more.
[0120] (5g) In the first to third embodiments, in a top view of the heat exchanger 100 (i.e., a front view of the ceiling wall 111, 111A), an imaginary line connecting the center point of the opening surface of the supply port 117 and the center point of the opening surface of the discharge port 118 overlaps with the center line C1 in the width direction W of the partition main body 121, 121A. However, such an imaginary line does not necessarily overlap with the center line in the width direction of the partition main body in a top view of the heat exchanger. For example, the imaginary line may be located on the first side wall side or the third side wall side with respect to the center line. In this case, when a plurality of communication portions are formed in a plurality of rows in the partition main body as in the first embodiment, the communication portions included in the same row may have larger opening areas, for example, as the communication portions are farther from the imaginary line. Furthermore, for example, when a plurality of communication portions are formed in the upstream wall as in the first embodiment, the communication portions farther from the supply port may have larger opening areas.
[0121] (5h) In the first embodiment, the second space S2b has a constant flow path cross-sectional area in the flow direction F. In the second and third embodiments, the second space S2b has a flow path cross-sectional area that decreases toward the downstream side over the entire range in the flow direction F. However, the flow path cross-sectional area of the second space is not particularly limited. For example, the second space may have a flow path cross-sectional area that decreases toward the downstream side over a portion of the range in the flow direction F, and may have a flow path cross-sectional area that is constant in the flow direction F over the remaining range.
[0122] (5i) In the first embodiment, the ceiling wall 111 has a hexagonal shape when viewed from the front. In the second to fourth embodiments, the ceiling wall 111A to 111C each have a rectangular shape when viewed from the front. However, the shape of the ceiling wall is not particularly limited. For example, the ceiling wall may have another polygonal shape, such as a square, when viewed from the front, or may have a circular shape, such as an oval shape, an ellipse, or a regular circle.
[0123] (5j) The shape of the bottom wall portion is not limited, just like the top wall portion. For example, the bottom wall portion may have the same shape and size as the top wall portion, as in the above embodiment, or at least one of the shape and size may be different from those of the top wall portion. For example, the bottom wall portion may have a shape similar to that of the top wall portion (i.e., the shape may be the same but the size may be different).
[0124] (5k) In the above embodiment, a refrigerant is given as an example of a heat exchange medium, but the heat exchange medium may be, for example, a heat medium. That is, the heat exchanger may be, for example, a cooler configured to cool an object by heat exchange with the object, or a heater configured to heat an object by heat exchange with the object.
[0125] (5l) In the above embodiment, the battery 200 is given as an example of the target object. However, the target object is not particularly limited, and may be, for example, a component part of the vehicle other than the battery 200.
[0126] (5m) The function of one component in the above embodiments may be distributed among multiple components, or the functions of multiple components may be integrated into one component. Also, part of the configuration of the above embodiments may be omitted. Furthermore, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.
[0127] [Technical idea disclosed in this specification] [Item 1] A heat exchanger mounted on a vehicle, A plate-shaped first plate portion configured to face the object; a plate-like second plate portion that faces the first plate portion from the side opposite to the object side and forms an internal space between the first plate portion and the second plate portion, the internal space including a supply space to which a heat exchange medium is supplied, and a circulation space that is continuous with the supply space and through which the heat exchange medium flows; a partition portion that divides the flow space into a first space on the first plate portion side and a second space on the second plate portion side; an upstream wall portion provided between the partition portion and the first plate portion and separating the supply space from the first space; Equipped with At least one communication portion is formed in each of the partition portion and the upstream wall portion, the at least one communication portion of the partition portion communicates the first space with the second space, a heat exchanger, wherein the at least one communication portion of the upstream wall portion communicates the supply space with the first space;
[0128] [Item 2] Item 1, the heat exchanger according to item 1, a downstream wall portion provided between the partition portion and the second plate portion and closing a downstream end of the second space, the at least one communication portion of the partition portion includes a plurality of communication portions, The downstream wall portion is provided so as to contact, from the downstream side, an edge of the most downstream communicating portion among the plurality of communicating portions.
[0129] [Item 3] The heat exchanger according to item 1 or 2, the at least one communication portion of the partition portion includes a first communication portion and a second communication portion downstream of the first communication portion, The opening area of the second communication portion is larger than the opening area of the first communication portion.
[0130] [Item 4] The heat exchanger according to any one of items 1 to 3, Further provided are a third plate portion and a fourth plate portion that connect the first plate portion and the second plate portion and form the internal space together with the first plate portion and the second plate portion, the at least one communication portion of the partition portion includes a first communication portion and a second communication portion that is farther from a center line of the partition portion in a direction from the third plate portion to the fourth plate portion than the first communication portion; The opening area of the second communication portion is larger than the opening area of the first communication portion.
[0131] [Item 5] The heat exchanger according to item 1 or 2, a cross-sectional area of the second space decreases downstream in at least a portion of the second space along the flow direction of the heat exchange medium in the flow space; [Explanation of symbols]
[0132] 100,100A,100B,100C...Heat exchanger, 110,110A,110B,110C...Outer shell member, 111,111A,111C...Ceiling wall section, 112,112A...Bottom wall section, 113,113A ...First side wall part, 114,114A...Second side wall part, 115,115A...Third side wall part, 116,116A...Fourth side wall part, 117...Supply port, 118...Discharge port, 120,120A,120B,120C... Cutting member, 121, 121A, 121B, 121C...partition main body portion, 122, 122C...upstream wall portion, 123...downstream wall portion, 123C...intermediate wall portion, 124...communicating hole, 125...slit, 126...inlet hole, 200...battery, 300...thermal conductive material, C1, C2...center line, S0...internal space, S1...supply space, S2...circulation space, S2a...first space, S2b...second space, S2c...third space, S3...discharge space.
Claims
1. A heat exchanger mounted on a vehicle, a plate-shaped first plate portion configured to face the object; a plate-like second plate portion facing the first plate portion from the side opposite to the object side and forming an internal space between the first plate portion and the second plate portion, the internal space including a supply space to which a heat exchange medium is supplied, and a circulation space continuing from the supply space and through which the heat exchange medium flows; a partition portion that divides the flow space into a first space on the first plate portion side and a second space on the second plate portion side; an upstream wall portion provided between the partition portion and the first plate portion and separating the supply space from the first space; Equipped with At least one communication portion is formed in each of the partition portion and the upstream wall portion, the at least one communication portion of the partition portion communicates the first space with the second space, The at least one communication portion of the upstream wall portion communicates the supply space with the first space.
2. 2. The heat exchanger of claim 1, a downstream wall portion provided between the partition portion and the second plate portion and closing a downstream end of the second space, the at least one communication portion of the partition portion includes a plurality of communication portions, The downstream wall portion is provided so as to contact, from the downstream side, an edge of the most downstream communicating portion among the plurality of communicating portions.
3. The heat exchanger according to claim 1 or 2, the at least one communication portion of the partition portion includes a first communication portion and a second communication portion downstream of the first communication portion, A heat exchanger, wherein an opening area of the second communication portion is larger than an opening area of the first communication portion.
4. The heat exchanger according to claim 1 or 2, The housing further includes a third plate portion and a fourth plate portion that connect the first plate portion and the second plate portion and form the internal space together with the first plate portion and the second plate portion, the at least one communication portion of the partition portion includes a first communication portion and a second communication portion that is farther from a center line of the partition portion in a direction from the third plate portion to the fourth plate portion than the first communication portion; A heat exchanger, wherein an opening area of the second communication portion is larger than an opening area of the first communication portion.
5. The heat exchanger according to claim 1 or 2, a cross-sectional area of the second space decreases downstream in at least a portion of the second space along the flow direction of the heat exchange medium in the flow space;
Citation Information
Patent Citations
Cooling device for power device, and fuel cell system
JP2010278130A