Heat exchanger
The heat exchanger's partitioned flow path design addresses temperature rise issues in existing systems by ensuring uniform medium distribution and temperature stability, thereby improving efficiency.
Patent Information
- Application Number
- JP2024078677
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-11-27
AI Technical Summary
In existing heat exchangers, the temperature of the refrigerant or heat medium rises as it flows downstream, leading to decreased cooling or heating efficiency when exchanging heat with an object.
A heat exchanger design with specific partition configurations and communication sections that control the flow path to maintain uniform heat exchange medium distribution and prevent temperature changes, including varying opening widths and partition areas to enhance heat exchange efficiency.
The design improves heat exchange efficiency by maintaining consistent medium temperature and uniform flow distribution, enhancing cooling or heating performance.
Smart Images
Figure 2025173203000001_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] In the cooling device described in Patent Document 1, the refrigerant flows from the lower space to the upper space and exchanges heat with the object while flowing downstream. This poses a problem in that the temperature of the refrigerant in the upper space tends to rise as it moves downstream. When the temperature of the refrigerant rises, the cooling efficiency of the object tends to decrease.
[0005] This problem is 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. In heating devices, the temperature of the heat medium in the upper space tends to decrease as it moves downstream, which tends to reduce the heating efficiency of the object.
[0006] One aspect of the present disclosure provides a technique for improving the efficiency of heat exchange between a heat exchanger mounted on a vehicle and an object. [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 flow path, an upstream wall, a downstream wall, a first partition, and a second partition. The first and second plates 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. The flow path is provided between the first and second plates. The flow path has a supply section to which a heat exchange medium is supplied, a discharge section to which the heat exchange medium is discharged, and a circulation section through which the heat exchange medium flows from the supply section to the discharge section. The upstream wall closes the upstream end of the circulation section. The downstream wall closes the downstream end of the circulation section. The first partition faces both the first and second plates and extends from the upstream wall to the downstream wall. The second partition extends from the first partition toward the second plate. The first and second partitions divide the flow section into a first region on the first plate section side and a second and third region on the second plate section side. The second and third regions are adjacent to the first region across the first partition and adjacent to each other across the second partition. The upstream wall section is formed with a first communication section that connects the supply section and the second region. The first partition section is formed with a second communication section that connects the first region and the second region and a third communication section that connects the first region and the third region. The downstream wall section is formed with a fourth communication section that connects the third region and the discharge section.
[0008] According to this configuration, the heat exchange efficiency between the heat exchanger mounted on the vehicle and the object can be improved.
[0009] In one embodiment of the present disclosure, at least one of the following (a) and (b) may be satisfied. (a) The second communication portion has an opening width at the first position that is larger than the opening width at the second position that is downstream of the first position. (b) The third communication portion has an opening width at the third position that is larger than the opening width at a fourth position that is downstream of the third position.
[0010] According to this configuration, the heat exchange efficiency with the object can be further improved in the heat exchanger mounted on the vehicle.
[0011] In one embodiment of the present disclosure, at least one of the following (c) and (d) may be satisfied. (c) Two second communication sections are formed in the first partition section, and of the two second communication sections, the second communication section on the upstream side has a larger opening area. (d) Two third communication sections are formed in the first partition section, and of the two third communication sections, the third communication section on the upstream side has a larger opening area.
[0012] According to this configuration, the heat exchange efficiency with the object can be further improved in the heat exchanger mounted on the vehicle.
[0013] In one aspect of the present disclosure, the second region may have a flow path cross-sectional area at the first position that is larger than a flow path cross-sectional area at a second position downstream of the first position. With this configuration, the heat exchanger mounted on the vehicle can further improve the efficiency of heat exchange with the object.
[0014] In one aspect of the present disclosure, at least one of the first plate portion and the second plate portion may have a supply port for supplying the heat exchange medium to the supply portion and a discharge port for discharging the heat exchange medium from the discharge portion, the supply port and the discharge port being formed to overlap each other when viewed from the direction from the supply portion to the discharge portion. The flow path may have two circulation portions, each of which may be provided with an upstream wall portion, a downstream wall portion, a first partition portion, and a second partition portion. The heat exchanger may satisfy at least one of the following (e) and (f). (e) Of the upstream wall portions provided in the two flow sections, the upstream wall portion closer to the supply port has a smaller opening area of the first communication portion formed therein. (f) Of the downstream wall portions provided in the two flow sections, the downstream wall portion closer to the discharge port has a smaller opening area of the fourth communication portion formed therein.
[0015] According to this configuration, in a heat exchanger mounted on a vehicle, the amount of heat exchange medium flowing through each flow portion can be made more uniform. [Brief explanation of the drawings]
[0016] [Figure 1] FIG. 1 is a schematic diagram showing a heat exchanger of the first embodiment mounted on a vehicle. [Figure 2] FIG. 2 is a perspective view of the heat exchanger of the first embodiment. [Figure 3] FIG. 3 is a top view of the heat exchanger of the first embodiment. [Figure 4] FIG. 4 is a bottom view of the heat exchanger of the first embodiment. [Figure 5] Fig. 5A is a cross-sectional view taken along line VA-VA in Fig. 3. Fig. 5B is a cross-sectional view taken along line VB-VB in Fig. 3. [Figure 6] Fig. 6A is a cross-sectional view taken along VIA-VIA in Fig. 3. Fig. 6B is a cross-sectional view taken along VIB-VIB in Fig. 3. Fig. 6C is a cross-sectional view taken along VIC-VIC in Fig. 3. [Figure 7] FIG. 7 is a partial enlarged view of FIG. 6B. [Figure 8] FIG. 8 is a top view of the heat exchanger of the second embodiment. [Figure 9] FIG. 9 is a top view of the heat exchanger of the third embodiment. [Figure 10] FIG. 10 is a top view of the heat exchanger of the fourth embodiment. [Figure 11] Fig. 11A is a view taken along the line XIA in Fig. 10. Fig. 11B is a cross-sectional view taken along the line XIB-XIB in Fig. 10. Fig. 11C is a cross-sectional view taken along the line XIC-XIC in Fig. 10. [Figure 12] FIG. 12 is a perspective view of the heat exchanger of the fifth embodiment. [Figure 13] FIG. 13 is a top view of the heat exchanger of the fifth embodiment. [Figure 14] FIG. 14 is a bottom view of the heat exchanger of the fifth embodiment. [Figure 15] Fig. 15A is a cross-sectional view taken along line XVA-XVA in Fig. 13. Fig. 15B is a cross-sectional view taken along line XVB-XVB in Fig. 13. [Figure 16] Fig. 16A is a cross-sectional view taken along line XVIA-XVIA in Fig. 13. Fig. 16B is a cross-sectional view taken along line XVIB-XVIB in Fig. 13. Fig. 16C is a cross-sectional view taken along line XVIC-XVIC in Fig. 13. [Figure 17] FIG. 17 is a partially enlarged view of FIG. 16B. [Figure 18] FIG. 18 is a cross-sectional view showing a modified example of the second region. [Figure 19] FIG. 19 is a top view showing a modified example of the opening formed in the upper and lower partitions. DETAILED DESCRIPTION OF THE INVENTION
[0017] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings.
[0018] [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.
[0019] 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.
[0020] As shown in FIG. 2, the heat exchanger 100 includes an outer shell member 110 and a partition member 120.
[0021] Outer shell member 110 is a member having an internal space. Outer shell member 110 is made of, for example, a metal. Specific examples of metal include aluminum and stainless steel.
[0022] The outer shape of outer shell member 110 is a rectangular parallelepiped. Outer shell member 110 has a ceiling wall portion 111, a bottom wall portion 112, and first to fourth side wall portions 113 to .
[0023] As shown in FIG. 1, the ceiling wall portion 111 is a plate-like portion that constitutes the upper surface of the outer shell member 110. The ceiling wall portion 111 is flat. The ceiling wall portion 111 is rectangular in shape when viewed from the front. The front view of a plate-like portion such as the ceiling wall portion 111 means a view from the outside of the plane of the plate-like portion. The same applies below. The ceiling wall portion 111 is configured to face the battery 200.
[0024] 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.
[0025] As shown in FIG. 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 are flat. Each of the first to fourth side wall portions 113 to 116 is rectangular in a front view. The first to fourth side wall portions 113 to 116 connect 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. The first side wall portion 113 and the third side wall portion 115 face each other in the short-side direction of the top wall portion 111. The short-side direction of the top wall portion 111 can also be said to be the direction from the first side wall portion 113 to the third side wall portion 115. 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.
[0026] A supply port 117 is formed in the end of the ceiling wall 111 on the second side wall 114 side. The supply port 117 is an opening for supplying the heat exchange medium flowing through the supply pipe P1 into the interior of the outer shell member 110. 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 end of the ceiling wall 111 on the fourth side wall 116 side. The discharge port 118 is an opening for discharging the heat exchange medium from the interior of the outer shell member 110 to the discharge pipe P2. The supply port 117 and the discharge port 118 are formed at diagonal positions on the ceiling wall 111. In the short direction of the ceiling wall 111, the supply port 117 is formed on the first side wall 113 side, and the discharge port 118 is formed on the third side wall 115 side.
[0027] Partition member 120 is a member disposed inside outer shell member 110. Partition member 120 preferably has low thermal conductivity. Partition member 120 is made of a material such as resin. Partition member 120 has four vertical wall portions 121, five upstream wall portions 122, five downstream wall portions 123, five upper / lower partition portions 124, and five left / right partition portions 125.
[0028] Each of the four vertical wall portions 121 is a rectangular, flat portion when viewed from the front. As shown in FIGS. 5A and 6B, the four vertical wall portions 121 extend from the ceiling wall portion 111 to the bottom wall portion 112. As shown in FIGS. 2 to 4, the four vertical wall portions 121 face each other at intervals in the direction of the short sides of the ceiling wall portion 111. A gap is provided between the first side wall portion 113 and the vertical wall portion 121 facing the first side wall portion 113. A gap is also provided between the third side wall portion 115 and the vertical wall portion 121 facing the third side wall portion 115. Each vertical wall portion 121 is farther from the second side wall portion 114 than the supply port 117. Each vertical wall portion 121 is farther from the fourth side wall portion 116 than the discharge port 118.
[0029] 2, the heat exchange medium flowing through the supply pipe P1 is supplied into the interior of the shell member 110 via the supply port 117. The heat exchange medium then flows through the interior of the shell member 110 and is discharged to the discharge pipe P2 via the discharge port 118. That is, a flow path F0 for the heat exchange medium is provided inside the shell member 110 (i.e., between the top wall portion 111 and the bottom wall portion 112). The flow path F0 has a supply section F1, a discharge section F2, and five circulation sections F3.
[0030] The supply section F1 is an area surrounded by the ceiling wall section 111, the bottom wall section 112, the first side wall section 113, and the third side wall section 115, and is an area located closer to the second side wall section 114 than the four vertical wall sections 121. A heat exchange medium is supplied to the supply section F1 via a supply port 117.
[0031] The discharge section F2 is an area surrounded by the ceiling wall section 111, the bottom wall section 112, the first side wall section 113, and the third side wall section 115, and is an area located closer to the fourth side wall section 116 than the four vertical wall sections 121. The heat exchange medium is discharged from the discharge section F2 via a discharge port 118.
[0032] As shown in FIG. 6B, each of the five flow sections F3 is an area surrounded by the ceiling wall 111, the bottom wall 112, the vertical wall 121, and the vertical wall 121 facing the vertical wall 121, the first side wall 113, or the third side wall 115. As shown in FIGS. 5A and 5B, each of the five flow sections F3 is continuous from the supply section F1 to the discharge section F2. As shown in FIG. 2, the heat exchange medium supplied from the supply pipe P1 to the supply section F1 flows into each of the five flow sections F3. The heat exchange medium then flows from each of the flow sections F3 to the same discharge section F2. The overall flow direction of the heat exchange medium in each flow section F3 is from the supply section F1 to the discharge section F2. Hereinafter, the overall flow direction of the heat exchange medium in each flow section F3 will be referred to as the flow direction D1. The upstream and downstream sides in the flow direction D1 are simply referred to as the upstream and downstream sides. The heat exchange medium that flows from each flow section F3 to the discharge section F2 is discharged through the discharge port 118 to the discharge pipe P2.
[0033] Each flow section F3 is provided with one upstream wall section 122, one downstream wall section 123, one upper / lower partition section 124, and one left / right partition section 125. In this embodiment, since the flow path F0 has five flow sections F3, the heat exchanger 100 is provided with five upstream wall sections 122, five downstream wall sections 123, five upper / lower partition sections 124, and five left / right partition sections 125. The upstream wall sections 122, the downstream wall sections 123, the upper / lower partition sections 124, and the left / right partition sections 125 are all flat plate-shaped.
[0034] 5B, each of the five upstream wall portions 122 closes the upstream end of the corresponding flow section F3. In other words, each of the five upstream wall portions 122 closes the opening on the supply section F1 side of two openings formed by the ceiling wall portion 111, the bottom wall portion 112, the vertical wall portion 121, and the vertical wall portion 121 facing the vertical wall portion 121, the first side wall portion 113, or the third side wall portion 115.
[0035] 5A and 6A, an inlet 126 is formed in each upstream wall portion 122. The inlet 126 is an opening for allowing the heat exchange medium to flow into a second region F3b (described later) in the flow section F3. The inlet 126 connects the supply section F1 and the second region F3b. The opening area of the inlet 126 is equal to the flow path cross-sectional area at the upstream end of the second region F3b. The upstream end of the second region F3b can also be referred to as the end of the second region F3b on the upstream wall portion 122 side.
[0036] 5A, each of the five downstream wall portions 123 closes the downstream end of the corresponding flow section F3. In other words, each of the five downstream wall portions 123 closes the opening on the discharge section F2 side of two openings formed by the ceiling wall portion 111, the bottom wall portion 112, the vertical wall portion 121, and the vertical wall portion 121 facing the vertical wall portion 121, the first side wall portion 113, or the third side wall portion 115.
[0037] As shown in FIGS. 5B and 6C, an outlet 127 is formed in each downstream wall portion 123. The outlet 127 is an opening for allowing the heat exchange medium to flow out from a third region F3c (described later) in the flow section F3. The outlet 127 connects the third region F3c with the discharge section F2. The opening area of the outlet 127 is equal to the flow path cross-sectional area at the downstream end of the third region F3c. The downstream end of the third region F3c can also be referred to as the end of the third region F3c on the downstream wall portion 123 side.
[0038] 5A and 5B, each of the five upper and lower partitions 124 extends from the corresponding upstream wall portion 122 to the corresponding downstream wall portion 123. Each of the five upper and lower partitions 124 faces both the ceiling wall portion 111 and the bottom wall portion 112.
[0039] 5B and 6B, the five left and right partitions 125 are portions that extend from the corresponding upper and lower partitions 124 toward the bottom wall 112. Specifically, the five left and right partitions 125 extend from the corresponding upper and lower partitions 124 to the bottom wall 112. The five left and right partitions 125 are continuous with both the corresponding upstream wall 122 and downstream wall 123.
[0040] 6B, the upper and lower partitions 124 and the left and right partitions 125 provided in the same flow section F3 divide the flow section F3 into a first region F3a on the ceiling wall 111 side and a second region F3b and a third region F3c on the bottom wall 112 side. The second region F3b and the third region F3c are adjacent to the first region F3a with the upper and lower partitions 124 in between. The second region F3b and the third region F3c are adjacent to each other with the left and right partitions 125 in between. The flow path cross-sectional areas of the first region F3a, the second region F3b, and the third region F3c are all constant in the flow direction D1.
[0041] A first opening 128 and a second opening 129 are formed in each of the upper and lower partitions 124. As shown in Fig. 4, the first opening 128 and the second opening 129 are formed on one side and the other side of the left and right partitions 125 in the upper and lower partitions 124. As shown in Fig. 6B, the first opening 128 communicates between the first region F3a and the second region F3b. The second opening 129 communicates between the first region F3a and the third region F3c.
[0042] As shown in FIG. 3, the opening surfaces of the first opening 128 and the second opening 129 extend from the upstream wall 122 to the downstream wall 123. That is, the opening surfaces of the first opening 128 and the second opening 129 extend in the flow direction D1. The first opening 128 has an opening width W1 at a first position that is larger than an opening width W2 at a second position that is downstream of the first position. Specifically, the opening width of the first opening 128 increases toward the upstream side. On the other hand, the opening width of the second opening 129 is constant in the flow direction D1. The opening width of the first opening 128 or the second opening 129 is the dimension of the opening surface of the first opening 128 or the second opening 129 in the width direction D2. The width direction D2 is a direction along the upper and lower partitions 124 and perpendicular to the flow direction D1. As shown in FIG. 2, the width direction D2 coincides with the direction in which the five flow sections F3 are arranged.
[0043] As shown in FIG. 6A, the upstream wall 122 does not have an opening that connects the supply section F1 to the first region F3a or the third region F3c. That is, the supply section F1 is directly connected to the second region F3b as shown in FIG. 5A, but is not directly connected to the first region F3a or the third region F3c. As shown in FIG. 6C, the downstream wall 123 does not have an opening that connects the discharge section F2 to the first region F3a or the second region F3b. That is, the discharge section F2 is directly connected to the third region F3c as shown in FIG. 5B, but is not directly connected to the first region F3a or the second region F3b. As shown in FIG. 6B, the left-right partition 125 does not have an opening. That is, the second region F3b and the third region F3c are directly connected to the first region F3a, but are not directly connected to each other.
[0044] [1-2. Effect] As indicated by the bold arrows in Figures 2, 5A, 5B, and 7, the heat exchange medium flowing through the supply pipe P1 is supplied to the supply section F1 via the supply port 117. The heat exchange medium flows from the supply section F1 through each inlet 126 and into the second region F3b of each of the five flow sections F3. The heat exchange medium then passes through the first opening 128 to the corresponding first region F3a, and then through the second opening 129 to the corresponding third region F3c, while flowing downstream overall (i.e., toward the discharge section F2). The heat exchange medium then flows through each outlet 127 to the discharge section F2 and is discharged via the discharge port 118 to the discharge pipe P2.
[0045] When the ceiling wall portion 111 faces the battery 200, the heat exchange medium flowing through the first area F3a exchanges heat with the battery 200. The heat exchange medium always flows into the first area F3a from the second area F3b through the first opening 128. In parallel with this, the heat exchange medium always flows out from the first area F3a to the third area F3c through the second opening 129. That is, the heat exchange medium flowing through the first area F3a is always replaced. Therefore, the temperature of the heat exchange medium flowing through the first area F3a is prevented from changing due to heat exchange with the battery 200. As a result, the efficiency of heat exchange with the battery 200 is improved. For example, when the heat exchange medium is a refrigerant, the temperature of the heat exchange medium flowing through the first area F3a is prevented from increasing due to heat exchange with the battery 200, thereby improving the cooling efficiency of the battery 200.
[0046] [1-3.Effects] According to the first embodiment described above in detail, the following effects can be obtained.
[0047] (1a) In the heat exchanger 100, the upper and lower partitions 124 are formed with a first opening 128 and a second opening 129. With this configuration, the heat exchange medium can flow into the first region F3a through the first opening 128 and flow out of the first region F3a through the second opening 129. That is, the heat exchange medium flowing through the first region F3a can be constantly replaced. Therefore, it is possible to suppress changes in the temperature of the heat exchange medium flowing through the first region F3a due to heat exchange with the battery 200. As a result, it is possible to improve the efficiency of heat exchange 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.
[0048] (1b) In the heat exchanger 100, the heat exchange medium flows from the supply unit F1 into the second region F3b through the inlet 126. It is considered that the heat exchange medium is relatively difficult to diffuse immediately after passing through the inlet 126. For this reason, it is considered that the amount of heat exchange medium passing through the first opening 128 on the upstream side is smaller than the amount of heat exchange medium passing through the first opening 128 on the downstream side. In other words, it is considered that the amount of heat exchange medium flowing into the first region F3a on the upstream side is smaller than the amount of heat exchange medium flowing into the first region F3a on the downstream side. The heat exchange medium that has flowed to the downstream end of the second region F3b is likely to hit the downstream wall portion 123, change direction, and head toward the first opening 128, which is also why it is considered that the amount of heat exchange medium flowing into the first region F3a on the upstream side is smaller.
[0049] Therefore, in the heat exchanger 100, the first opening 128 is formed so that the opening width W1 at the first position is larger than the opening width W2 at the second position. Specifically, the first opening 128 is formed so that the opening width increases toward the upstream side. This configuration makes it easier to increase the amount of heat exchange medium passing through the first opening 128 on the upstream side. In other words, it makes it easier to increase the amount of heat exchange medium flowing into the first region F3a on the upstream side. Therefore, it makes it easier to make the amount of heat exchange medium flowing into the first region F3a more uniform. This further suppresses changes in the temperature of the heat exchange medium flowing through the first region F3a due to heat exchange with the battery 200. Consequently, it is possible to further improve the efficiency of heat exchange with the battery 200.
[0050] (1c) In heat exchanger 100, supply port 117 and discharge port 118 are formed in ceiling wall 111. With this configuration, the thickness of shell member 110 can be made smaller than in a configuration in which supply port 117 and discharge port 118 are formed in any of first to fourth side wall portions 113 to 116. The thickness of shell member 110 is the dimension from the outer surface of ceiling wall 111 to the outer surface of bottom wall 112. In other words, the thickness of shell member 110 is the dimension in directions perpendicular to both flow direction D and width direction W of shell member 110. This allows for the heat exchanger 100 to be made more compact.
[0051] [1-4. Correspondence] In the first embodiment, the ceiling wall 111 corresponds to an example of a first plate portion. The bottom wall 112 corresponds to an example of a second plate portion. The upper and lower partition 124 corresponds to an example of a first partition portion. The left and right partition 125 corresponds to an example of a second partition portion. The inlet 126, the first opening 128, the second opening 129, and the outlet 127 correspond to examples of first to fourth communication portions, respectively.
[0052] [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.
[0053] As shown in FIG. 8, a heat exchanger 100A of the second embodiment differs from the heat exchanger 100 of the first embodiment in that a partition member 120A is provided instead of the partition member 120.
[0054] The partition member 120A of the second embodiment has substantially the same configuration as the partition member 120 of the first embodiment. However, the partition member 120A of the second embodiment has five upper and lower partition portions 124A instead of the five upper and lower partition portions 124.
[0055] The five upper and lower partitions 124A are formed with first openings 128A and second openings 129A instead of the first openings 128 and second openings 129 described above, respectively. The first openings 128A and second openings 129A have different opening surface shapes compared to the first openings 128 and second openings 129 described above. The first opening 128A has a constant opening width in the flow direction D1. The second opening 129A has an opening width W3 at a third position that is larger than an opening width W4 at a fourth position that is downstream of the third position. Specifically, the opening width of the second opening 129A increases toward the upstream side. The opening width of the first opening 128A or the second opening 129A is determined in the same manner as the opening width of the first opening 128 or the second opening 129 described above.
[0056] [2-2. Effects] According to the second embodiment described above in detail, the same effects as those (1a) and (1c) above can be obtained, and the following additional effects can also be obtained.
[0057] In the heat exchanger 100A of the second embodiment, the second opening 129A has an opening width W3 at the third position that is larger than an opening width W4 at the fourth position. Specifically, the opening width of the second opening 129A increases toward the upstream side. This configuration makes it easier to increase the amount of heat exchange medium passing through the second opening 129A on the upstream side. This contributes to making it easier to increase the amount of heat exchange medium passing through the first opening 128A on the upstream side. Therefore, the same effect as in (1b) above can be obtained.
[0058] [2-3. Correspondence] In the second embodiment, the ceiling wall 111 corresponds to an example of a first plate portion. The bottom wall 112 corresponds to an example of a second plate portion. The upper and lower partition 124A corresponds to an example of a first partition portion. The left and right partition 125 corresponds to an example of a second partition portion. The inlet 126, the first opening 128A, the second opening 129A, and the outlet 127 correspond to examples of first to fourth communication portions, respectively.
[0059] 3. Third Embodiment [3-1.Configuration] The third 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 and second embodiments indicate the same configurations, and reference is made to the preceding description.
[0060] As shown in FIG. 9, a heat exchanger 100B of the third embodiment differs from the heat exchanger 100 of the first embodiment in that a partition member 120B is provided instead of the partition member 120.
[0061] The partition member 120B of the third embodiment has substantially the same configuration as the partition member 120 of the first embodiment. However, the partition member 120B of the third embodiment has five upper and lower partition portions 124B instead of the five upper and lower partition portions 124.
[0062] Each of the five upper and lower partitions 124B has a first opening 128 and a second opening 129A. As described in detail in the first embodiment, the first opening 128 has an opening width W1 at a first position that is larger than an opening width W2 at a second position that is downstream of the first position. Specifically, the opening width of the first opening 128 increases toward the upstream side. Furthermore, as described in detail in the second embodiment, the second opening 129A has an opening width W3 at a third position that is larger than an opening width W4 at a fourth position that is downstream of the third position. Specifically, the opening width of the second opening 129A increases toward the upstream side.
[0063] 9, the third position is shown as a position downstream of the first position, and the fourth position is shown as a position downstream of the second position. However, these relative positions are not particularly limited. For example, the third position may be the same position as the first position in the flow direction D1, or may be a position upstream of the first position. Also, for example, the fourth position may be the same position as the second position in the flow direction D1, or may be a position upstream of the second position.
[0064] [3-2. Effects] According to the third embodiment described above in detail, the same effects as those of the first embodiment can be obtained, and further, the following effects can be obtained.
[0065] In the heat exchanger 100 of the third embodiment, the second opening 129A has an opening width W3 at the third position that is larger than an opening width W4 at the fourth position. Specifically, the opening width of the second opening 129A increases toward the upstream side. This configuration makes it easier to increase the amount of heat exchange medium passing through the second opening 129A on the upstream side. This contributes to making it easier to increase the amount of heat exchange medium passing through the first opening 128 on the upstream side. Therefore, the effect of (1b) above can be more easily achieved.
[0066] [3-3. Correspondence] In the third embodiment, the ceiling wall 111 corresponds to an example of a first plate portion. The bottom wall 112 corresponds to an example of a second plate portion. The upper and lower partitions 124B correspond to an example of a first partition portion. The left and right partitions 125 correspond to an example of a second partition portion. The inlet 126, the first opening 128, the second opening 129A, and the outlet 127 correspond to examples of first to fourth communication portions, respectively.
[0067] [4. Fourth Embodiment] [4-1.Configuration] The fourth 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.
[0068] As shown in FIG. 10, a heat exchanger 100C of the fourth embodiment includes an outer shell member 110C and a partition member 120C.
[0069] Shell member 110C of the fourth embodiment has substantially the same configuration as shell member 110 of the first embodiment. However, shell member 110C of the fourth embodiment has ceiling wall portion 111C instead of the above-described ceiling wall portion 111. Ceiling wall portion 111C has supply port 117 and discharge port 118 in different positions than the above-described ceiling wall portion 111.
[0070] 10 and 11A, in the ceiling wall portion 111C, the supply port 117 and the discharge port 118 are formed so as to overlap each other when viewed from the flow direction D1. Note that in Fig. 11A, for convenience of illustration, the discharge pipe P2 is shown thinner than the supply pipe P1, but in reality, they have the same diameter.
[0071] 10, the partition member 120C of the fourth embodiment has substantially the same configuration as the partition member 120 of the first embodiment. However, the partition member 120C of the fourth embodiment has five upstream wall portions 122C and five downstream wall portions 123C instead of the five upstream wall portions 122 and five downstream wall portions 123 described above.
[0072] In the first embodiment, the five upstream wall portions 122 are each formed with an inlet 126 having the same opening area. In contrast, in the five upstream wall portions 122C of the fourth embodiment, as shown in Fig. 11B, the inlet 126 has a smaller opening area in the upstream wall portion 122C closer to the supply port 117. Specifically, of the five upstream wall portions 122C, the opening area of the inlet 126 formed in the middle upstream wall portion 122C is the smallest, and the opening area of the inlet 126 formed increases as the inlet approaches the first side wall portion 113 or the third side wall portion 115.
[0073] In the first embodiment, each of the five downstream wall portions 123 has an outlet 127 with the same opening area. In contrast, in the five downstream wall portions 123C of the fourth embodiment, as shown in Fig. 11C, the outlet 127 with a smaller opening area is formed in the downstream wall portion 123C closer to the discharge port 118. Specifically, of the five downstream wall portions 123C, the outlet 127 formed in the middle downstream wall portion 123C has the smallest opening area, and the opening area of the outlet 127 formed becomes smaller as the downstream wall portion approaches the first side wall portion 113 or the third side wall portion 115.
[0074] [4-2.Effects] According to the fourth embodiment described above in detail, the same effects as those of the first embodiment can be obtained, and further, the following effects can be obtained.
[0075] In the heat exchanger 100C of the fourth embodiment, the supply port 117 and the discharge port 118 are formed to overlap each other when viewed from the flow direction D1. In this case, it is considered that, among the multiple circulation portions F3, the circulation portions F3 closer to the supply port 117 and the discharge port 118 tend to allow a larger amount of heat exchange medium to flow.
[0076] Therefore, in the heat exchanger 100C, the opening area of the inlet 126 formed in the upstream wall 122C corresponding to the flow section F3 closer to the supply port 117 and the discharge port 118 (i.e., the upstream wall 122C closer to the supply port 117) is smaller. Furthermore, the opening area of the outlet 127 formed in the downstream wall 123C corresponding to the flow section F3 (i.e., the downstream wall 123C closer to the discharge port 118) is smaller. With this configuration, it is possible to make the amount of heat exchange medium flowing through each flow section F3 closer to a uniform amount. Therefore, efficient heat exchange with the battery 200 can be performed for any flow section F3.
[0077] [4-3. Correspondence] In the fourth embodiment, the ceiling wall 111C corresponds to an example of a first plate portion. The bottom wall 112 corresponds to an example of a second plate portion. The upper and lower partition 124 corresponds to an example of a first partition portion. The left and right partition 125 corresponds to an example of a second partition portion. The inlet 126, the first opening 128, the second opening 129, and the outlet 127 correspond to examples of first to fourth communication portions, respectively.
[0078] [5. Fifth Embodiment] [5-1.Configuration] The fifth 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.
[0079] As shown in FIG. 12, a heat exchanger 100D of the fifth embodiment differs from the heat exchanger 100 of the first embodiment in that a partition member 120D is provided instead of the partition member 120.
[0080] The partition member 120D of the fifth embodiment has substantially the same configuration as the partition member 120 of the first embodiment. However, whereas the partition member 120 of the first embodiment has one upper and lower partition section 124 provided for each flow section F3, the partition member 120D of the fifth embodiment has two upper and lower partition sections 124 provided for each flow section F3. In the fifth embodiment, the flow path F0 has five flow sections F3, and therefore the heat exchanger 100D has ten upper and lower partition sections 124, as shown in FIGS. 13 and 14 .
[0081] 15A and 15B, in each flow section F3, the two upper and lower partitions 124 each extend from the corresponding upstream wall 122D to the corresponding downstream wall 123D. The two upper and lower partitions 124 are disposed between the ceiling wall 111 and the bottom wall 112 with a gap between them. One of the two upper and lower partitions 124 faces the ceiling wall 111 with a gap between them. The other of the two upper and lower partitions 124 faces the bottom wall 112 with a gap between them.
[0082] 15B and 16B, in each flow section F3, the left-right partition 125 extends from the upper and lower partition 124 on the ceiling wall 111 side to the bottom wall 112 side. Specifically, the left-right partition 125 extends from the upper and lower partition 124 on the ceiling wall 111 side to the upper and lower partition 124 on the bottom wall 112 side. The left-right partition 125D is continuous with both the corresponding upstream wall 122 and downstream wall 123.
[0083] 17, two upper and lower partitions 124 and two left and right partitions 125 provided in the same flow section F3 divide the flow section F3 into a first region F3a on the ceiling wall 111 side, a second region F3b and a third region F3c closer to the bottom wall 112 than the first region F3a, and a fourth region F3d closer to the bottom wall 112 than the second region F3b and the third region F3c. The second region F3b and the third region F3c are adjacent to the first region F3a across the upper and lower partition 124 on the ceiling wall 111 side. The second region F3b and the third region F3c are adjacent to each other across the left and right partition 125. The second region F3b and the third region F3c are adjacent to the fourth region F3d across the upper and lower partition 124 on the bottom wall 112 side. The cross-sectional areas of the flow paths of the first region F3a, the second region F3b, the third region F3c, and the fourth region F3d are all constant in the flow direction D1.
[0084] As shown in Figures 15A and 16A, an inlet 126 formed in the upstream wall 122D connects the supply section F1 to the second region F3b. As shown in Figure 17, a first opening 128 formed in the upper and lower partition 124 on the ceiling wall 111 side connects the second region F3b to the first region F3a. A second opening 129 formed in the upper and lower partition 124 on the ceiling wall 111 side connects the first region F3a to the third region F3c. A first opening 128 formed in the upper and lower partition 124 on the bottom wall 112 side connects the second region F3b to the fourth region F3d. A second opening 129 formed in the upper and lower partition 124 on the bottom wall 112 side connects the fourth region F3d to the third region F3c. As shown in FIGS. 15B and 16C, an outlet 127 formed in the downstream wall portion 123D connects the third region F3c and the discharge portion F2.
[0085] [5-2.Effects] According to the fifth embodiment described above in detail, the same effects as those of the first embodiment can be obtained, and further, the following effects can be obtained.
[0086] In the heat exchanger 100D of the fifth embodiment, each flow portion F3 is provided with two upper and lower partitions 124. A first opening 128 and a second opening 129 are formed in each of the two upper and lower partitions 124.
[0087] 15A, 15B, and 17, the heat exchange medium can flow into the fourth region F3d through the first opening 128 formed in the upper and lower partitions 124 on the bottom wall 112 side, and can flow out of the fourth region F3d through the second opening 129 formed in the same upper and lower partitions 124. That is, the heat exchange medium flowing in not only the first region F3a but also the fourth region F3d can be constantly replaced.
[0088] Therefore, even when the battery 200 is placed in a position facing the bottom wall 112, heat exchange with the battery 200 can be performed more effectively, not only when the battery 200 is placed in a position facing the ceiling wall 111. In other words, the heat exchanger 100D can be suitably used as a so-called double-sided heat exchanger.
[0089] [5-3. Correspondence] In the fifth embodiment, the ceiling wall 111 corresponds to an example of a first plate portion. The bottom wall 112 corresponds to an example of a second plate portion. The upper and lower partitions 124 of the ceiling wall 111 correspond to an example of a first partition portion. The left and right partitions 125 correspond to an example of a second partition portion. The inlet 126 corresponds to an example of a first communication portion. The first opening 128 and the second opening 129 formed in the upper and lower partitions 124 on the ceiling wall 111 side correspond to an example of a second communication portion and a third communication portion, respectively. The outlet 127 corresponds to an example of a fourth communication portion.
[0090] 6. 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.
[0091] (6a) In the above embodiment, the second region F3b has a constant flow path cross-sectional area in the flow direction D1. However, the flow path cross-sectional area of the second region does not necessarily have to be constant in the flow direction. For example, as shown in FIG. 18, the second region F3b may have a flow path cross-sectional area S1 at a first position that is larger than the flow path cross-sectional area S2 at a second position downstream of the first position. For example, the second region F3b may have a flow path cross-sectional area that is larger on the upstream side. With this configuration, it is possible to obtain the same effect as in (1b) above.
[0092] The cross-sectional area of the second region can be changed, for example, by adjusting the thickness of the left and right partitions. In the example shown in Fig. 18, the left and right partitions 124E are thicker on the downstream side. The thickness here refers to the dimension in the direction perpendicular to both the flow direction D1 and the width direction D2.
[0093] (6b) In the above embodiment, the upper and lower partitions 124, 124A, and 124B are each formed with one first opening 128, 128A and one second opening 129, 129A. However, the number of communication portions formed in the upper and lower partitions that communicate the first region with the second region and the number of communication portions that communicate the first region with the third region are not particularly limited.
[0094] For example, as in the partition member 120F shown in FIG. 19, instead of at least one of the first opening 128 and the second opening 129, a plurality of communication sections 130 may be formed in the upper and lower partition section 124F. The plurality of communication sections 130 are arranged, for example, in the flow direction D1. For example, the more upstream the communication section 130, the larger the opening area. With this configuration, it is possible to obtain the same effect as in (1b) above. Furthermore, for example, the plurality of communication sections 130 may include a communication section 130 whose opening area is the same as that of an adjacent communication section 130.
[0095] (6c) The shape of the opening surface of the communication portion formed in the upper and lower partitions is not particularly limited. The shape of the opening surface of the communication portion may be, for example, a shape extending in a predetermined direction like the first openings 128, 128A and the second openings 129, 129A in the above embodiment, a circular shape like the communication portion 130 shown in Fig. 19, or a polygonal shape such as a square.
[0096] (6d) The number and shape of the opening surface of the communication portion formed in the upstream wall portion and connecting the supply portion with the second region are not particularly limited.The number and shape of the opening surface of the communication portion formed in the downstream wall portion and connecting the third region with the discharge portion are not particularly limited.
[0097] (6e) In the fourth embodiment, the opening area of the inlet 126 formed in the upstream wall portion 122C is smaller as the wall portion is closer to the supply port 117. Furthermore, the opening area of the outlet 127 formed in the downstream wall portion 123C is smaller as the wall portion is closer to the discharge port 118. However, even in a configuration in which the supply port and the discharge port are formed to overlap each other when viewed from the flow direction of the heat exchange medium, as in the fourth embodiment, for example, the opening areas of at least some of the multiple inlet ports may be the same, or the opening areas of at least some of the multiple outlet ports may be the same.
[0098] (6f) In the above embodiment, the flow path F0 has five circulating portions F3, but the number of circulating portions is not particularly limited. For example, the flow path may have one circulating portion or multiple circulating portions.
[0099] (6g) In the above embodiment, the shapes of the ceiling wall portions 111, 111C and the bottom wall portion 112 are rectangular when viewed from the front. However, the shapes of the ceiling wall portions and the bottom wall portions, and therefore the shape of the heat exchanger, are not particularly limited. For example, the ceiling wall portions and the bottom wall portions may be polygonal, such as rectangular or hexagonal, when viewed from the front, or may be circular, such as oval, elliptical, or circular. Furthermore, for example, the ceiling wall portions and the bottom wall portions may have the same shape and size as in the above embodiment, or at least one of the shape and size may be different from each other.
[0100] (6h) 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.
[0101] (6i) 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.
[0102] (6j) 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.
[0103] [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-shaped second plate portion arranged to face the first plate portion from the opposite side to the object side; a flow path provided between the first plate portion and the second plate portion, the flow path having a supply portion to which a heat exchange medium is supplied, a discharge portion to which the heat exchange medium is discharged, and a circulating portion through which the heat exchange medium flows from the supply portion to the discharge portion; an upstream wall portion that closes an upstream end of the flow portion; a downstream wall portion that closes a downstream end of the flow passage portion; a first partition portion that faces both the first plate portion and the second plate portion and extends from the upstream wall portion to the downstream wall portion; a second partition portion extending from the first partition portion toward the second plate portion; Equipped with the first partition portion and the second partition portion divide the flow section into a first region on the first plate portion side, and a second region and a third region on the second plate portion side, the second region and the third region being adjacent to the first region across the first partition portion and adjacent to each other across the second partition portion; a first communication portion that communicates the supply portion with the second region is formed in the upstream wall portion; a second communication portion communicating the first region with the second region and a third communication portion communicating the first region with the third region are formed in the first partition portion; a fourth communication portion that communicates the third region with the discharge portion is formed in the downstream wall portion;
[0104] [Item 2] Item 1, the heat exchanger according to item 1, A heat exchanger that satisfies at least one of the following (a) and (b): (a) The second communication portion has an opening width at a first position that is larger than an opening width at a second position that is downstream of the first position. (b) The third communication portion has an opening width at a third position that is larger than an opening width at a fourth position that is downstream of the third position.
[0105] [Item 3] The heat exchanger according to item 1 or 2, A heat exchanger that satisfies at least one of the following (c) and (d): (c) Two second communication portions are formed in the first partition portion, and the second communication portion on the upstream side of the two second communication portions has a larger opening area. (d) Two third communication portions are formed in the first partition portion, and of the two third communication portions, the third communication portion on the upstream side has a larger opening area.
[0106] [Item 4] The heat exchanger according to any one of items 1 to 3, A heat exchanger in which the second region has a flow path cross-sectional area at a first position that is larger than a flow path cross-sectional area at a second position downstream of the first position.
[0107] [Item 5] The heat exchanger according to any one of items 1 to 4, At least one of the first plate portion and the second plate portion has a supply port for supplying the heat exchange medium to the supply portion and a discharge port for discharging the heat exchange medium from the discharge portion, the supply port and the discharge port being formed so as to overlap each other when viewed from the direction from the supply portion to the discharge portion, the flow path has two circulating portions, and each of the two circulating portions is provided with the upstream wall portion, the downstream wall portion, the first partition portion, and the second partition portion; The heat exchanger satisfies at least one of the following (e) and (f): (e) Of the upstream wall portions provided in the two flow sections, the upstream wall portion closer to the supply port has a smaller opening area of the first communication portion formed therein. (f) Of the downstream wall portions provided in the two flow sections, the downstream wall portion closer to the discharge port has a smaller opening area of the fourth communication portion formed therein. [Explanation of symbols]
[0108] 100, 100A to 100E... heat exchanger, 110, 110C... outer shell member, 111, 111C... ceiling wall portion, 112... bottom wall portion, 117... supply port, 118... discharge port, 120, 120A to 120F... partition member, 121... vertical wall portion, 122, 122C, 122D... upstream wall portion, 123, 123C, 123D... downstream wall portion, 124, 124A, 124B, 124E, 124F...upper and lower partitions, 125...left and right partitions, 126...inlet, 127...outlet, 128, 128A...first opening, 129, 129A...second opening, 130...communicating section, 200...battery, 300...thermal conductive material, F0...flow path, F1...supply section, F2...discharge section, F3...circulation section, F3a-F3d...first to fourth regions.
Claims
1. A heat exchanger mounted on a vehicle, a plate-shaped first plate portion configured to face the object; a plate-shaped second plate portion facing the first plate portion from the side opposite to the object side; a flow path provided between the first plate portion and the second plate portion, the flow path including a supply portion to which a heat exchange medium is supplied, a discharge portion to which the heat exchange medium is discharged, and a circulating portion through which the heat exchange medium flows from the supply portion to the discharge portion; an upstream wall portion that closes an upstream end of the flow portion; a downstream wall portion that closes a downstream end of the flow passage portion; a first partition portion that faces both the first plate portion and the second plate portion and extends from the upstream wall portion to the downstream wall portion; a second partition portion extending from the first partition portion toward the second plate portion; Equipped with the first partition portion and the second partition portion divide the flow section into a first region on the first plate portion side, and a second region and a third region on the second plate portion side, the second region and the third region being adjacent to the first region across the first partition portion and adjacent to each other across the second partition portion; a first communication portion that communicates the supply portion with the second region is formed in the upstream wall portion; a second communication portion communicating the first region with the second region and a third communication portion communicating the first region with the third region are formed in the first partition portion; a fourth communication portion that communicates the third region with the discharge portion is formed in the downstream wall portion.
2. 2. The heat exchanger of claim 1, A heat exchanger that satisfies at least one of the following (a) and (b): (a) The second communication portion has an opening width at a first position that is larger than an opening width at a second position that is downstream of the first position. (b) The third communication portion has an opening width at a third position that is larger than an opening width at a fourth position that is downstream of the third position.
3. The heat exchanger according to claim 1 or 2, A heat exchanger that satisfies at least one of the following (c) and (d): (c) Two second communication portions are formed in the first partition portion, and of the two second communication portions, the second communication portion on the upstream side has a larger opening area. (d) Two third communication portions are formed in the first partition portion, and of the two third communication portions, the third communication portion on the upstream side has a larger opening area.
4. The heat exchanger according to claim 1 or 2, A heat exchanger, wherein the second region has a flow path cross-sectional area at a first position that is larger than a flow path cross-sectional area at a second position downstream of the first position.
5. The heat exchanger according to claim 1 or 2, At least one of the first plate portion and the second plate portion has a supply port for supplying the heat exchange medium to the supply portion and a discharge port for discharging the heat exchange medium from the discharge portion, the supply port and the discharge port being formed so as to overlap each other when viewed from the direction from the supply portion to the discharge portion, the flow path has two circulating portions, and each of the two circulating portions is provided with the upstream wall portion, the downstream wall portion, the first partition portion, and the second partition portion; The heat exchanger satisfies at least one of the following (e) and (f): (e) Of the upstream wall portions provided in the two flow sections, the upstream wall portion closer to the supply port has a smaller opening area of the first communication portion formed therein. (f) Of the downstream wall portions provided in the two flow sections, the downstream wall portion closer to the discharge port has a smaller opening area of the fourth communication portion formed therein.
Citation Information
Patent Citations
Cooling device for power device, and fuel cell system
JP2010278130A