Heat exchanger

Abstract

To suppress deterioration of a heat exchange capability.SOLUTION: A heat exchanger includes: a first plate part; a second plate part; a plurality of support parts; and a plurality of protrusion parts. The first plate part abuts against an object, and the second plate part forms a flow path of a heat medium with the first plate part. The plurality of support parts are provided between the first plate part and the second plate part. The plurality of protrusion parts is provided on the second plate part so as to protrude into the flow path. Each top part of the plurality of protrusion parts is separated from the first plate part. At least one of the number of support part, the size of the support part, the number of protrusion parts, and the size of the protrusion parts increases toward a downstream side in the flow direction of the heat medium.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a heat exchanger.

Background Art

[0002] As described in Patent Document 1, a cooler that cools electronic components with a refrigerant flowing down a flow path formed between two plate-like members is known. Further, techniques are known in which a battery is placed above one of the plate-like members in such a cooler and the battery is cooled from below, and techniques in which such a cooler is configured with aluminum or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the cooler disclosed in Patent Document 1, the temperature of the refrigerant rises when cooling electronic components. For this reason, in this cooler, the temperature of the refrigerant in the flow path increases toward the downstream side in the flow direction of the refrigerant, and the heat exchange capacity decreases.

[0005] In one aspect of the present disclosure, it is desirable to suppress a decrease in heat exchange capacity.

Means for Solving the Problems

[0006] One aspect of the present disclosure is a heat exchanger, comprising a first plate portion, a second plate portion, a plurality of support portions, and a plurality of protrusions. The first plate portion is a plate-shaped part configured to contact an object. The second plate portion is arranged to face the first plate portion and is a plate-shaped part that forms a flow path for a heat medium between the first plate portion. The plurality of support portions are provided between the first plate portion and the second plate portion. The plurality of protrusions are provided on the second plate portion so as to protrude into the flow path. The tops of the plurality of protrusions are away from the first plate portion. As going toward the downstream side in the flow direction of the heat medium, at least one of the number of support portions, the size of the support portions, the number of protrusions, and the size of the protrusions increases.

[0007] According to the above configuration, it is possible to promote an increase in the flow velocity of the heat medium as going toward the downstream side, and thereby, heat exchange in the region on the downstream side of the flow path is promoted. Therefore, a decrease in heat exchange capacity can be suppressed.

[0008] In one aspect of the present disclosure, at least one of the number of protrusions and the size of the protrusions may increase as going toward the downstream side in the flow direction of the heat medium. According to the above configuration, it is possible to promote more flow of the heat medium toward the first plate portion as going toward the downstream side, and thereby, heat exchange in the region on the downstream side of the flow path is promoted. Therefore, a decrease in heat exchange capacity can be suppressed.

[0009] In one aspect of the present disclosure, at least one of the number of support portions and the number of protrusions may increase as going toward the downstream side in the flow direction of the heat medium. According to the above configuration, a decrease in heat exchange capacity can be suppressed.

[0010] One aspect of the present disclosure is a heat exchanger, which includes a first plate portion, a second plate portion, a plurality of support portions, and a plurality of protrusions. The first plate portion is a plate-shaped portion configured to contact an object. The second plate portion is arranged to face the first plate portion and is a plate-shaped portion that forms a flow path for a heat medium between the second plate portion and the first plate portion. The plurality of support portions are provided between the first plate portion and the second plate portion. The plurality of protrusions are provided on the second plate portion so as to protrude into the flow path. The tops of the plurality of protrusions are away from the first plate portion. The positions of the support portions and the protrusions are adjusted so as to promote an increase in the flow velocity of the heat medium as it goes downstream in the flow direction of the heat medium.

[0011] According to the above configuration, heat exchange in the region on the downstream side of the flow path is promoted. Therefore, a decrease in heat exchange capacity can be suppressed. One aspect of the present disclosure may further include two side wall portions located at both ends in the width direction of the flow path. At least a part of each protrusion may be provided such that the most upstream end of the protrusion in the flow direction of the heat medium is located in the intermediate region. The intermediate region may be both or either of a region located between two support portions arranged adjacent to each other in a direction intersecting the flow direction of the heat medium in the flow path and a region located between a support portion adjacent to the side wall portion in the flow path and a portion of the side wall portion that faces the support portion in the width direction.

[0012] According to the above configuration, by providing a plurality of support portions, the protrusions can be arranged at locations where the flow of the heat medium becomes faster. For this reason, the flow of the heat medium reaching the protrusions can be further promoted to head toward the first plate portion, and as a result, heat exchange can be performed more effectively.

[0013] In one aspect of the present disclosure, the first plate portion may be arranged above the second plate portion. According to the above configuration, since an object is arranged above the first plate portion, a load corresponding to the weight of the object is applied to the first plate portion. Therefore, by supporting the first plate portion with the plurality of support portions, deformation of the first plate portion can be effectively suppressed.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0015] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. [1. Overview] The heat exchanger 1 shown in FIGS. 1 and 2 is configured such that a fluid refrigerant flows down through the internal flow path 16, and cools an object 6 (for example, a battery) that abuts against the heat exchanger 1. Note that the refrigerant may be, for example, a liquid such as cooling water. Further, the heat exchanger 1 may be mounted on a vehicle as an example. Further, the object 6 may be a battery that supplies power to a motor serving as a power source of an electric vehicle or a hybrid vehicle. Further, without being limited thereto, the object 6 may be heated by flowing a high-temperature heat medium instead of the refrigerant inside the heat exchanger 1.

[0016] The heat exchanger 1 is a substantially rectangular plate-like device, and includes an inlet portion 10, an outlet portion 11, a first plate portion 2, and a second plate portion 3. Further, the edge portions forming two sides facing the longitudinal direction (in other words, the flow direction F of the refrigerant) of the heat exchanger 1 are defined as an inlet end portion 12 and an outlet end portion 13, respectively. Further, the edge portions forming two sides facing the short-side direction (in other words, the width direction W) of the heat exchanger 1 are defined as first and second side edge portions 14 and 15, respectively. The first and second side edge portions 14 and 15 extend along the flow direction F of the refrigerant. And inside the heat exchanger 1, a flow path 16 surrounded by the inlet end portion 12, the outlet end portion 13, and the first and second side edge portions 14 and 15 is provided.

[0017] The inlet portion 10 and the outlet portion 11 are each a cylindrical portion provided so as to protrude from the first plate portion 2. The refrigerant flows into the flow path 16 through the inlet portion 10, flows through the flow path 16 along the flow direction F of the refrigerant, and flows out to the outside through the outlet portion 11. Hereinafter, the upstream side and the downstream side in the flow direction F of the refrigerant are also simply referred to as the upstream side and the downstream side. The inlet portion 10 is provided at the center in the width direction W of a portion near the inlet end portion 12 in the first plate portion 2. Further, the outlet portion 11 is provided at the center in the width direction W of a portion near the outlet end portion 13 in the first plate portion 2.

[0018] [2. First and Second Plate Portions] The first and second plate portions 2 and 3 are substantially rectangular flat plate-like members, which are arranged to face each other, and the first plate portion 2 abuts against the object 6 (see FIGS. 1 and 2). As an example, the heat exchanger 1 is arranged to extend horizontally, the first plate portion 2 is located on the upper side, the second plate portion 3 is located on the lower side, and the object 6 is placed on the first plate portion 2. However, it is not limited to this, and the positions of the first and second plate portions 2 and 3 are determined as appropriate.

[0019] The first plate portion 2 is planar. On the other hand, the second plate portion 3 includes an edge portion 30, a wall portion 31, and a bottom portion 32. The edge portion 30 is provided so as to surround the edge of the second plate portion 3 and is joined to the edge portion of the first plate portion 2. The edge portion 30 surrounds the wall portion 31 and the bottom portion 32.

[0020] The bottom portion 32 is a substantially rectangular part and is arranged away from the first plate portion 2. The wall portion 31 is a part connecting the inner peripheral edge portion of the edge portion 30 and the outer peripheral edge portion of the bottom portion 32. The wall portion 31 is provided so as to protrude from the inner peripheral edge portion of the edge portion 30 toward the first plate portion 2.

[0021] And a refrigerant flow path 16 is formed between the first plate portion 2 and the wall portion 31 and the bottom portion 32 of the second plate portion 3. The flow path 16 has a substantially rectangular flat shape, and an inlet portion 10 and an outlet portion 11 are respectively located at both longitudinal ends of the flow path 16.

[0022] [3. Support portion and protrusion portion] A plurality of support portions 4 and a plurality of protrusion portions 5 are provided on the bottom portion 32 of the second plate portion 3 (see FIGS. 3 to 5).

[0023] The plurality of support portions 4 are provided between the first plate portion 2 and the bottom portion 32 of the second plate portion 3 to support the first plate portion 2, and the top thereof abuts against the first plate portion 2 (see FIG. 4). However, not limited thereto, a slight gap may be provided between the top of each support portion 4 and the first plate portion 2. Even in such a case, the first plate portion 2 deformed by being pressed can be supported by the support portion 4. And by the plurality of support portions 4 supporting the first plate portion 2, the rigidity of the heat exchanger 1 can be improved, and a thinner plate material can be used as the first plate portion 2 and the second plate portion 3.

[0024] As an example, the plurality of support portions 4 are provided on the bottom portion 32, and the region (hereinafter, the planar region) where each support portion 4 is provided on the bottom portion 32 is, for example, circular, and each support portion 4 has substantially the same shape (for example, hemispherical). Further, the plurality of support portions 4 are arranged over the entire region between the inlet portion 10 and the outlet portion 11 in the flow path 16.

[0025] On the other hand, the plurality of protrusions 5 are provided on the bottom portion 32 to direct the flow of the refrigerant toward the first plate portion 2, and the top of each protrusion 5 is separated from the first plate portion 2 (see FIG. 5). The region (hereinafter, the planar region) where each protrusion 5 is provided on the bottom portion 32 is, for example, circular and has substantially the same shape (for example, hemispherical). Also, as an example, the planar region of the protrusion 5 is smaller than the planar region of the support portion 4, but not limited thereto, the planar region of the protrusion 5 may be larger than the planar region of the support portion 4, or these planar regions may be of the same size.

[0026] Further, each protrusion 5 has its most upstream end located in a region (hereinafter, the intermediate regions 16A, 16B) where the flow velocity of the refrigerant is increased under the influence of the plurality of support portions 4 (see FIG. 3). As an example, in the flow path 16, the region located between two support portions 4 arranged adjacent to each other in the width direction W becomes the intermediate region 16A. Also, as an example, in the flow path 16, the region located between the support portion 4 adjacent to the side wall portion 31A and the portion of the side wall portion 31A facing the support portion 4 in the width direction W becomes the intermediate region 16B. Note that the side wall portion 31A is the portion of the wall portion 31 adjacent to the first and second side edges 14, 15.

[0027] As an example, in each protrusion 5, the portion including the most upstream end of the protrusion 5 is located in the intermediate regions 16A and 16B, and the portion including the downstream end is located outside the intermediate regions 16A and 16B. However, the whole of each protrusion 5 may be located in the intermediate regions 16A and 16B, or the whole of the protrusion 5 may be located outside the intermediate regions 16A and 16B. Further, for example, the protrusion 5 may be disposed in one of the intermediate regions 16A and 16B, or there may be an intermediate region 16A or 16B in which the protrusion 5 is not disposed.

[0028] In the vicinity of the first plate portion 2 in the flow path 16, the flow of the refrigerant is slower than in other portions, and a temperature boundary layer that hinders the heat transfer from the flow path 16 to the object 6 is formed. On the other hand, when the refrigerant flowing into the intermediate regions 16A and 16B collides with the protrusion 5, the direction of the flow changes toward the first plate portion 2 side. Since the protrusion 5 is hemispherical, a turbulent flow of the refrigerant that circulates above the protrusion 5 is formed, whereby the temperature boundary layer in the vicinity of the first plate portion 2 is destroyed, and the heat transfer from the flow path 16 to the object 6 is promoted.

[0029] [4. Adjustment of refrigerant flow rate] In the heat exchanger 1, in the flow path 16, at least one of the number of the support portions 4, the size of the support portions 4, the number of the protrusions 5, and the size of the protrusions 5 increases as going downstream (see FIGS. 3 and 6 to 10). Thereby, the flow rate of the refrigerant is promoted to increase as going downstream. Further, in the flow path 16, the positions of the support portions 4 and the positions of the protrusions 5 are adjusted so as to promote the increase in the flow rate of the refrigerant as going downstream.

[0030] That is, in a section where a plurality of support portions 4 and a plurality of protrusions 5 are provided in the refrigerant flow direction F of the flow path 16, the flow rate of the refrigerant increases as going downstream, or the flow rate of the refrigerant is maintained at each position in the refrigerant flow direction F. Note that, as an example, the refrigerant flow rate may mean the average flow rate of the refrigerant in a cross section orthogonal to the refrigerant flow direction F in the flow path 16 (hereinafter, average flow rate).

[0031] Further, the size of the support portion 4 means the area of the planar region of the support portion 4. Also, the size of the protrusion 5 means the area of the planar region of the bottom portion 32 and / or the length (hereinafter referred to as height) in the thickness direction of the heat exchanger 1 in the protrusion 5.

[0032] [(1) Adjustment of the number of support portions and protrusions] As an example, in order to promote an increase in the flow velocity of the refrigerant as it goes downstream, the number of support portions 4 and / or the number of protrusions 5 may be increased as it goes downstream. Note that as the number of support portions 4 and / or the number of protrusions 5 is increased, the position of the support portion 4 and / or the position of the protrusion 5 is also adjusted.

[0033] Specifically, the flow path 16 may be divided into a plurality of sections (hereinafter referred to as adjustment sections 16C) extending in the refrigerant flow direction F (see FIG. 3). Each adjustment section 16C has a substantially constant length in the refrigerant flow direction F and extends from the first end to the second end in the width direction W of the flow path 16. In each adjustment section 16C, at least one row 4L of support portions 4 in the width direction is arranged, and adjacent to each row 4L of support portions 4 in the width direction, a row 5L of protrusions 5 in the width direction is arranged.

[0034] Note that the row 4L of support portions 4 in the width direction means a row of a plurality of support portions 4 arranged in the width direction W, and the row 5L of protrusions 5 in the width direction means a row of a plurality of protrusions 5 arranged in the width direction W. Also, in the present embodiment, as an example, a plurality of rows 4L of support portions 4 in the width direction are arranged in each adjustment section 16C.

[0035] Also, the sizes of the respective support portions 4 are substantially the same, and the sizes of the respective protrusions 5 are also substantially the same. Then, it is also possible to increase the number of support portions 4 and / or the number of protrusions 5 located in the adjustment section 16C as the adjustment section 16C on the downstream side.

[0036] As an example, as shown in FIG. 3, while making the number and position of the support portions 4 in each adjustment section 16C the same, it is also possible to increase the number of protrusions 5 included in each row 5L in the width direction as the adjustment section 16C on the downstream side.

[0037] That is, the plurality of support portions 4 are arranged in a matrix at substantially regular intervals along the width direction W and the refrigerant flow direction F, and the same number of support portions 4 may be arranged in each adjustment section 16C. And, for example, as shown in FIG. 3, the number and position of the protrusions 5 may be adjusted such that more protrusions 5 are arranged in the intermediate regions 16A and 16B in the downstream adjustment section 16C. Of course, the present invention is not limited to this, and the position of the protrusion 5 is appropriately determined. Specifically, for example, all or part of the protrusions 5 may be located in the intermediate regions 16A and 16B, or all of the protrusions 5 may be located outside the intermediate regions 16A and 16B.

[0038] Also, for example, as shown in FIG. 6, the number of support portions 4 in the width direction row 4L and the number of protrusions 5 in the width direction row 5L may be increased in the downstream adjustment section 16C. In this case, as an example, in each adjustment section 16C, the plurality of support portions 4 may be arranged in a matrix at substantially regular intervals along the width direction W and the refrigerant flow direction F. And in each adjustment section 16C, a plurality of protrusions 5 are arranged adjacent to the downstream side of the width direction row 4L of the support portion 4, and these protrusions 5 may be arranged at regular intervals.

[0039] Of course, in addition to this, for example, while the number and position of the protrusions 5 in each adjustment section 16C are the same, the number of support portions 4 may be increased in the downstream adjustment section 16C. [(2) Adjustment of the sizes of the support portion and the protrusion] As an example, in order to promote an increase in the refrigerant flow velocity toward the downstream side, the size of the support portion 4 and / or the size of the protrusion 5 may be increased toward the downstream side.

[0040] That is, for example, as shown in FIG. 7, a plurality of support portions 4 may be arranged in a matrix along the width direction W and the refrigerant flow direction F. Similarly, a plurality of protrusion portions 5 may be arranged in a matrix along the width direction W and the refrigerant flow direction F. Note that the distance between the centers of the planar regions of two adjacent support portions 4 in the width direction W and the refrigerant flow direction F is substantially constant respectively. Similarly, the distance between the centers of the planar regions of two adjacent protrusion portions 5 in the width direction W and the refrigerant flow direction F is also substantially constant respectively.

[0041] Then, the sizes (in other words, the planar areas) of the support portions 4 included in the same width direction column 4L may be made the same, and the sizes of the support portions 4 included in different width direction columns 4L may be different. And the size of the support portion 4 may be made larger in the downstream width direction column 4L.

[0042] Similarly, the sizes of the protrusion portions 5 included in the same width direction column 5L may be made the same, and the sizes of the protrusion portions 5 included in different width direction columns 5L may be different. And the size of the protrusion portion 5 may be made larger in the downstream width direction column 5L. At this time, as shown in FIG. 7, the area of the planar region of the protrusion portion 5 may be increased as going downstream, or as shown in FIG. 8, the protrusion portion 5 may be made higher as going downstream. Of course, the planar region and the height of the protrusion portion 5 may be increased as going downstream.

[0043] In addition to this, a plurality of the above-described adjustment sections 16C may be provided in the flow path 16, and as shown in FIG. 9, a plurality of width direction columns 4L formed by the support portions 4 may be arranged in each adjustment section 16C. Although omitted in FIG. 9, each adjustment section 16C includes at least one width direction column of the protrusion portions 5. Also, the number of the support portions 4 and the number of the protrusion portions 5 included in each adjustment section 16C are the same.

[0044] Then, for example, the sizes of the respective support portions 4 located in the downstream adjustment section 16C may be made larger as the downstream adjustment section 16C is further downstream. Of course, this is not the only way, and the sizes of the protrusions 5 located in the downstream adjustment section 16C, or the sizes of the support portions 4 and the protrusions 5 may be made larger as the downstream adjustment section 16C is further downstream.

[0045] [(3) Adjustment of the interval between the columns in the width direction] As an example, in order to promote an increase in the flow velocity of the refrigerant as it moves downstream, the intervals in the refrigerant flow direction F between the plurality of support portions 4 and the plurality of protrusions 5 may be made smaller as it moves downstream.

[0046] That is, each support portion 4 has substantially the same size, and each protrusion 5 also has substantially the same size. And, for example, as shown in FIG. 10, the plurality of support portions 4 may be arranged in a matrix along the width direction W and the refrigerant flow direction F. Similarly, the plurality of protrusions 5 may be arranged in a matrix along the width direction W and the refrigerant flow direction F. Note that the interval between two adjacent support portions 4 in the width direction W is substantially constant. Similarly, the interval between two adjacent protrusions 5 in the width direction W is also substantially constant.

[0047] That is, in the flow path 16, a width direction column 4L of the support portions 4 and a width direction column 5L of the protrusions 5 are arranged, and the width direction column 5L of the protrusions 5 is arranged adjacent to the width direction column 4L of each support portion 4. Hereinafter, the width direction column 4L of the support portions 4 and the width direction column 5L of the protrusions 5 adjacent thereto are referred to as a composite column L. Note that the relative positions between the width direction column 4L of the support portions 4 and the width direction column 5L of the protrusions 5 in each composite column L are substantially constant.

[0048] And, as it moves downstream, the interval between the composite columns L in the refrigerant flow direction F (hereinafter, the column interval D) may be made smaller. In addition to this, a plurality of the above-described adjustment sections 16C may be provided in the flow path 16, and a plurality of composite columns L may be arranged in each adjustment section 16C such that the column interval D is substantially constant. And, the column interval D may be made smaller as the downstream adjustment section 16C is further downstream.

[0049] [(4) Others] In order to promote an increase in the flow velocity of the refrigerant as it goes downstream, in the method described above, as it goes downstream, while increasing the number of the support portions 4 and / or the number of the protrusions 5, the size of the support portions 4 and / or the size of the protrusions 5 may be increased.

[0050] Also, while decreasing the column interval D of the composite column L as it goes downstream, as it goes downstream, the number of the support portions 4 and / or the number of the protrusions 5 included in the composite column L may be increased, or the size of the support portions 4 and / or the size of the protrusions 5 included in the composite column L may be increased. Also, while decreasing the column interval D of the composite column L as it goes downstream, as it goes downstream, both the number of the support portions 4 and / or the number of the protrusions 5 included in the composite column L and the size of the support portions 4 and / or the size of the protrusions 5 included in the composite column L may be increased.

[0051] Furthermore, the flow path 16 may be divided into a plurality of sections arranged in the refrigerant flow direction L, and in each section, the flow velocity of the refrigerant may be increased in different ways as it goes downstream. [5. Effects] (1) According to the above embodiment, as it goes downstream, the number of the support portions 4 and / or the number of the protrusions 5 can be increased, or the size of the support portions 4 and / or the size of the protrusions 5 can be increased. Thereby, as it goes downstream, the cross-section of the location where the support portions 4 and the protrusions 5 are arranged in the flow path 16 can be reduced, or as it goes downstream, the interval between the support portions 4, the interval between the support portion 4 and the protrusion 5, and the interval between the protrusions 5 can be narrowed. As a result, as it goes downstream, it is possible to promote an improvement in the speed of the refrigerant when passing around the support portions 4 and the protrusions 5.

[0052] Further, according to the above embodiment, the positions of the support portions 4 and the protrusion portions 5 are adjusted so as to promote an increase in the flow velocity of the refrigerant as it goes downstream. Specifically, for example, as it goes downstream, the inter-column distance D, which is the distance between adjacent composite columns L, becomes smaller. As a result, as it goes downstream, the region in the flow path 16 through which the refrigerant can flow becomes narrower, and as a result, it is possible to promote an increase in the velocity of the refrigerant as it goes downstream.

[0053] By doing so, in the section where the plurality of support portions 4 and the plurality of protrusion portions 5 are provided in the flow direction F of the refrigerant in the flow path 16, the flow velocity of the refrigerant increases as it goes downstream, or the flow velocity of the refrigerant is maintained at each position in the flow direction F of the refrigerant. As a result, heat exchange in the downstream region of the flow path 16 is promoted, and a decrease in the heat exchange capacity can be suppressed.

[0054] (2) Further, by increasing the number and / or size of the protrusion portions as it goes downstream, it is possible to promote the flow of more refrigerant toward the first plate portion 2 as it goes downstream. As a result, heat exchange is further promoted as it goes downstream in the flow path 16. Therefore, a decrease in the heat exchange capacity can be suppressed.

[0055] (3) Further, the most upstream end portion of the protrusion portion 5 is located in the intermediate regions 16A and 16B. As a result, the protrusion portion 5 can be arranged at a location where the flow of the refrigerant is accelerated by providing the plurality of support portions 4. For this reason, it is possible to further promote the flow of the heat medium that has reached the protrusion portion 5 toward the first plate portion 2, and as a result, heat exchange can be performed more effectively.

[0056] (4) Further, the first plate portion 2 is disposed above the second plate portion 3. For this reason, a load corresponding to the weight of the object 6 is applied to the first plate portion 2. Therefore, by supporting the first plate portion 2 with the plurality of support portions 4, deformation of the first plate portion 2 can be effectively suppressed.

Description of Reference Numerals

[0057] 1…Heat exchanger, 10…Inlet section, 11…Outlet section, 12…Inlet end, 13…Outlet end, 14…First side edge, 15…Second side edge, 16…Flow path, 16A, 16B…Intermediate region, 16C…Adjustment section, 2…First plate section, 3…Second plate section, 30…Edge, 31…Wall section, 31A…Side wall section, 32…Bottom, 4…Support section, 4L…Width direction row, 5…Protrusion, 5L…Width direction row, 6…Object, F…Flow direction of refrigerant, W…Width direction, L…Composite row, D…Row interval.

Claims

1. A heat exchanger, comprising: a first plate portion which is a plate-shaped portion configured to contact an object; a second plate portion which is a plate-shaped portion arranged to face the first plate portion and forms a flow path for a heat medium between the first plate portion and the second plate portion; a plurality of support portions provided between the first plate portion and the second plate portion; a plurality of protrusions provided on the second plate portion so as to protrude into the flow path, wherein tops of the plurality of protrusions are separated from the first plate portion; at least one of the number of the support portions, the size of the support portions, the number of the protrusions, and the size of the protrusions increases as going downstream in the flow direction of the heat medium. A heat exchanger.

2. The heat exchanger according to Claim 1, wherein at least one of the number of the protrusions and the size of the protrusions increases as going downstream in the flow direction of the heat medium. A heat exchanger.

3. The heat exchanger according to Claim 1, wherein at least one of the number of the support portions and the number of the protrusions increases as going downstream in the flow direction of the heat medium. A heat exchanger.

4. A heat exchanger, comprising: a first plate portion which is a plate-shaped portion configured to contact an object; a second plate portion which is a plate-shaped portion arranged to face the first plate portion and forms a flow path for a heat medium between the first plate portion and the second plate portion; a plurality of support portions provided between the first plate portion and the second plate portion; a plurality of protrusions provided on the second plate portion so as to protrude into the flow path, wherein tops of the plurality of protrusions are separated from the first plate portion; wherein positions of the support portions and the protrusions are adjusted so as to promote an increase in the flow velocity of the heat medium as going downstream in the flow direction of the heat medium. A heat exchanger.

5. The heat exchanger according to any one of Claims 1 to 4, further comprising two side wall portions located at both ends in the width direction of the flow path, wherein at least a part of each of the protrusions is provided such that an end portion on the most upstream side in the flow direction of the heat medium in the protrusion is located in an intermediate region, wherein the intermediate region is either or both of a region located between two adjacent support portions arranged side by side in a direction intersecting the flow direction of the heat medium in the flow path and a region located between a support portion adjacent to the side wall portion in the flow path and a portion of the side wall portion facing the support portion in the width direction. A heat exchanger.

6. The heat exchanger according to any one of claims 1 to 4, wherein the first plate portion is disposed above the second plate portion Heat exchanger

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