Heat exchanger and compressor having the same

Abstract

To reduce a stress applied to a core part of a heat exchanger.SOLUTION: A heat exchanger 5 includes: a plurality of core parts 20A, 20B forming a plurality of fluid passages 28 extending in a first direction X and aligned in a second direction Y, and cooling the fluid flowing in the plurality of fluid passages 28; an inlet pipe 11 into which the fluid flows; a plurality of inlet tanks 12A, 12B connected to the inlet pipe 11 and provided at one ends of the plurality of core parts 20A, 20B in the first direction X, respectively, and splitting the fluid into the plurality of fluid passages 28; and an outlet tank 13 provided at the other ends of the plurality of core parts 20A, 20B in the first direction, and joins the fluid that has passed through the plurality of fluid passages 28 from one end toward the other end. The plurality of core parts 20A, 20B correspond to the plurality of inlet tanks 12A, 12B, respectively.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a heat exchanger and a compressor including the same. [Background technology]

[0002] Patent Document 1 discloses a so-called one-pass type heat exchanger. In this heat exchanger, an inlet header and an outlet header are provided at both ends of a core section. Fluid flows into the inlet header, branches into multiple passages in the core section, and merges at the outlet header. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 61-93387 Summary of the Invention [Problem to be solved by the invention]

[0004] The fluid is hot when it enters the inlet header and is cooled as it flows through the core section. The difference between the thermal deformation of the inlet header and the thermal deformation of the end of the core section becomes large, and stress is concentrated in the core section.

[0005] An object of the present invention is to reduce the stress acting on a core portion of a heat exchanger. [Means for solving the problem]

[0006] One aspect of the present invention provides a heat exchanger comprising: a plurality of core sections that form a plurality of fluid flow paths each extending in a first direction and aligned in a second direction perpendicular to the first direction, and that cool a fluid to be cooled flowing through the plurality of fluid flow paths; an inlet pipe into which the fluid flows; a plurality of inlet tank sections each connected to the inlet pipe and provided at one end of the plurality of core sections in the first direction, and dividing the fluid into the plurality of fluid flow paths; and an outlet tank section provided at the other end of the plurality of core sections in the first direction, and combining the fluid that has flowed through each of the plurality of fluid flow paths from the one end to the other end, wherein the plurality of core sections correspond to each of the plurality of inlet tank sections.

[0007] According to the above configuration, the inlet tank section is exposed to the fluid to be cooled and becomes hot, while the core section is where the fluid is cooled and is therefore at a lower temperature than the inlet tank section. A plurality of inlet tank sections are provided, and the core sections correspond one-to-one to the inlet tank sections. The heat exchanger has a structure in which the inlet tank section and the core section are divided. Therefore, even if a temperature difference similar to that in the past occurs between each pair of the inlet tank section and the core section, the difference in the amount of thermal deformation becomes small. Therefore, the stress acting on the core section is reduced.

[0008] The plurality of core portions may form a plurality of refrigerant passages through which a refrigerant for cooling the fluid flowing through the fluid passage may pass, and the plurality of refrigerant passages and the plurality of fluid passages may be arranged alternately in the second direction. The refrigerant may pass through the refrigerant passages in a third direction perpendicular to the first direction and the second direction. Fins may be provided in each of the plurality of fluid passages and the plurality of refrigerant passages. This increases the cooling efficiency of the heat exchanger.

[0009] The multiple inlet tank portions may be aligned with each other in the second direction, and the multiple core portions may be aligned with each other in the second direction.

[0010] According to the above configuration, the heat exchanger has a structure in which the inlet tank section and the core section are divided in the second direction. Therefore, when multiple inlet tank sections and multiple core sections are provided in the heat exchanger, the size of the heat exchanger does not increase. In addition, when the inlet tank section and the core section are arranged in the second direction, the flow of the refrigerant passing through in the third direction is not obstructed, and the cooling efficiency can be maintained.

[0011] The plurality of inlet tank portions may be welded to one another in the second direction, and the plurality of core portions may be welded to one another in the second direction.

[0012] According to the above configuration, the plurality of inlet tank portions and the plurality of core portions are integrated, so that the strength of the heat exchanger can be increased.

[0013] The other ends of the multiple core portions may be connected to a single outlet tank portion.

[0014] According to the above configuration, since the multiple core portions are collectively attached to the single outlet tank portion, the heat exchanger can be easily assembled.

[0015] One aspect of the present invention provides a compressor including the above-mentioned heat exchanger. Effect of the Invention

[0016] According to the present invention, it is possible to provide a heat exchanger capable of reducing the stress acting on the core portion. [Brief description of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of a compressor according to an embodiment; [Diagram 2] FIG. 2 is a plan view of an aftercooler as an example of a heat exchanger according to an embodiment. [Diagram 3] FIG. [Figure 4] FIG. 4 is a perspective view of one longitudinal end of the core portion. [Diagram 5] FIG. 4 is a plan view of a heat exchanger according to a first modified example. [Figure 6] FIG. 11 is a plan view of a heat exchanger according to a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The embodiments will be described with reference to the drawings. Note that the same or corresponding elements are designated by the same reference numerals throughout the drawings, and detailed descriptions thereof will be omitted.

[0019] (Compressor) Referring to FIG. 1, a compressor 1 according to this embodiment is a two-stage screw compressor, as a mere example, and includes a first stage compressor body 2, a second stage compressor body 3, a motor 4, and a heat exchanger 5. The first stage compressor body 2 is rotationally driven by the motor 4. In synchronization with this, the second stage compressor body 3 is also rotationally driven. Air at normal temperature and normal pressure outside the compressor 1 is supplied to the suction port of the first stage compressor body 2 through the suction flow passage 6a, and is compressed by the first stage compressor body 2. The compressed air is supplied from the discharge port of the first stage compressor body 2 through the intermediate flow passage 6b to the suction port of the second stage compressor body 3, and is further compressed by the second stage compressor body 3. The compressed air is led from the discharge port of the second stage compressor body 3 to the outside of the compressor 1 through the discharge flow passage 6c.

[0020] Examples of the heat exchanger 5 include an intercooler 5a and an aftercooler 5b. The intercooler 5a is disposed in the intermediate flow passage 6b and cools the air compressed in the first stage compressor body 2. The aftercooler 5b is disposed in the discharge flow passage 6c and cools the air compressed in the second stage compressor body 3. The high-temperature compressed air generated in the first or second compressor body 2, 3 is the fluid to be cooled. Air having a lower temperature than the compressed air is preferably used as a refrigerant for cooling the compressed air.

[0021] (heat exchanger) 2 and 3, the heat exchanger 5 includes an inlet pipe 11, a plurality of inlet tank portions 12A and 12B, a plurality of core portions 20A and 20B, an outlet tank portion 13, and an outlet pipe .

[0022] The core parts 20A and 20B occupy a large proportion of the overall dimensions or shape of the heat exchanger 5. The core parts 20A and 20B are rectangular parallelepipeds that are long, wide, and low in height. The first direction X corresponds to the longitudinal direction of the core parts 20A and 20B or the heat exchanger 5. The second direction Y is perpendicular to the first direction X and corresponds to the width direction of the core parts 20A and 20B or the heat exchanger 5. The third direction Z is perpendicular to both the first direction X and the second direction Y and corresponds to the height direction of the core parts 20A and 20B or the heat exchanger 5. The plan view of FIG. 2 is a view seen from the third direction Z (height direction). The heat exchanger 5 is rectangular in shape that is long in the first direction X (longitudinal direction) and short in the second direction Y (width direction) in a plan view. The side view of FIG. 3 is a view seen from the other side (the right side of the paper in FIG. 2) in the second direction Y (width direction). In the following description, one side of the third direction Z may be referred to as the upper side and the other side of the third direction Z as the lower side in accordance with the direction of the paper surface of Fig. 3. However, this concept of direction can be changed as appropriate depending on the installation posture of the heat exchanger 5.

[0023] The inlet pipe 11 has an inlet port 11a, a branch pipe 11b, and multiple inflow ports 11cA, 11cB. The branch pipe 11b extends in the width direction above the inlet tank portions 12A, 12B and the core portions 20A, 20B. The inlet port 11a extends further upward from the branch pipe 11b and has an opening 11d at its tip.

[0024] The opening 11d is surrounded by a flange 11e to which a pipe (not shown) is connected. When the heat exchanger 5 is the aftercooler 5b (see FIG. 1) of the compressor 1, the pipe forms part of the discharge flow passage 6c and connects the discharge port of the second stage compressor body 3 to the inlet port 11a. Compressed air as a fluid to be cooled flows into the inlet pipe 11 through the opening 11d (see the solid arrows in FIGS. 2 and 3).

[0025] The opening 11d communicates with a plurality of inflow ports 11cA, 11cB via the inlet port 11a and the branch pipe 11b. The plurality of inflow ports 11cA, 11cB are spaced apart in the width direction and extend from the branch pipe 11b in the opposite direction (downward) to the inlet port 11a.

[0026] The inlet ports 11cA, 11cB correspond one-to-one to the inlet tank portions 12A, 12B, and the inlet tank portions 12A, 12B correspond one-to-one to the core portions 20A, 20B. That is, the first inlet port 11cA communicates with the first inlet tank portion 12A, and the second inlet port 11cB communicates with the second inlet tank portion 12B. The number of these is two in this embodiment as just an example, but may be three or more.

[0027] The first inlet tank portion 12A is a rectangular parallelepiped with one side open, i.e., with an opening on one side. The first inlet tank portion 12A is as wide and low as the first core portion 20A, but is shorter than the first core portion 20A in the longitudinal direction of the heat exchanger 5. The opening of the first inlet tank portion 12A faces the other side in the longitudinal direction (the lower side of the paper surface in FIG. 2). One end of the first core portion 20A in the longitudinal direction is joined to the first inlet tank portion 12A. The tip of the first inlet port 11cA is connected to the upper wall of the first inlet tank portion 12A, whereby the inlet piping 11 is communicated with the inside of the first inlet tank portion 12A.

[0028] The first core portion 20A extends in the longitudinal direction and forms a plurality of fluid flow paths 28 through which the fluid to be cooled flows. The plurality of fluid flow paths 28 are arranged at intervals in the width direction. Each of the fluid flow paths 28 is open at both ends in the longitudinal direction. One end of each of the fluid flow paths 28 in the longitudinal direction communicates with the interior of the first inlet tank portion 12A.

[0029] The first inlet tank portion 12A and the second inlet tank portion 12B have the same structure, and the first core portion 20A and the second core portion 20B have the same structure. The structure of the second inlet tank portion 12B, the structure of the second core portion 20B, the relationship between the second inlet tank portion 12B and the second core portion 20B, and the relationship between the second inlet tank portion 12B and the second connection port 11cB are the same as those described above, and therefore will not be described.

[0030] The first core portion 20A and the second core portion 20B are arranged in the width direction (second direction Y). Accordingly, the first inlet tank portion 12A and the second inlet tank portion 12B, as well as the two outlet ports 11cA, 11cB, are also arranged in the width direction. In this embodiment, the first inlet tank portion 12A and the second inlet tank portion 12B adjacent to each other in the width direction are welded to each other. In addition, the first core portion 20A and the second core portion 20B adjacent to each other in the width direction are welded to each other. When arranging in the width direction, two adjacent parts are in contact with each other and joined to each other in the width direction.

[0031] In this embodiment, there is only one outlet tank section 13. The outlet tank section 13 is also a rectangular parallelepiped with one side open, like the first inlet tank section 12A and the second inlet tank section 12B. The opening of the outlet tank section 13 faces one side in the longitudinal direction (upper side of the paper in FIG. 2) so as to face the openings of the two inlet tank sections 12A and 12B. The outlet tank section 13 is as low as the inlet tank sections 12A and 12B and the core sections 20A and 20B, and is as short as the inlet tank sections 12A and 12B in the longitudinal direction of the heat exchanger 5. On the other hand, the outlet tank section 13 has a width that is multiple of the number of the core sections 20A and 20B (twice in this example), or a width slightly wider than this.

[0032] Each of the two core members 20A, 20B arranged in the width direction is attached to this single outlet tank member 13. The other longitudinal end of the first core member 20A is joined to one side portion of the outlet tank member 13 in the width direction (the left side portion of the paper in FIG. 2). The other longitudinal end of the second core member 20A is joined to the other side portion of the outlet tank member 13 in the width direction (the right side portion of the paper in FIG. 2). The other longitudinal end of each fluid flow path 28 of the first core member 20A and the other longitudinal end of each fluid flow path 28 of the second core member 20B are both connected to the interior of the outlet tank member 13.

[0033] The outlet pipe 14 extends from any wall of the outlet tank portion 13 (for example, the wall opposite to the opening or the bottom wall) and has an opening 14a at its tip. The opening 14a is surrounded by a flange 14b to which a pipe (not shown) is connected. When the heat exchanger 5 is an aftercooler 5b (see FIG. 1) of the compressor 1, the pipe forms part of the discharge flow path 6c and guides the compressed air to the outside of the compressor 1. The compressed air as the fluid to be cooled flows out of the outlet pipe 14 through the opening 14b into the pipe, and is further guided to the outside of the compressor 1 (see the solid arrows in FIGS. 2 and 3).

[0034] Fig. 4 shows one end in the longitudinal direction of the first core portion 20A. The other end in the longitudinal direction of the first core portion 20A and both ends in the longitudinal direction of the second core portion 20B have the same structure. The structure of the first core portion 20A will be described with reference to Fig. 4, but the structure of the second core portion 20B will not be described since it is similar.

[0035] The first core portion 20A includes a pair of outer plates 21a, a plurality of partition plates 22, a plurality of sets of first seal plates 23, a plurality of sets of second seal plates 24, a plurality of first fins 25, and a plurality of second fins 26. As a result, the first core portion 20A forms a plurality of fluid flow paths 28 through which the fluid to be cooled flows, and a plurality of refrigerant passages 29 through which a refrigerant passes for cooling the fluid.

[0036] Two adjacent ones of the plurality of partition plates 22 define a fluid flow path 28 or a refrigerant passage 29. The plurality of fluid flow paths 28 and the plurality of refrigerant passages 29 are arranged alternately in the width direction (second direction Y). That is, the number of partition plates 22 is one more than the sum of the fluid flow paths 28 and the refrigerant passages 29. In this embodiment, the number of refrigerant passages 29 is one more than the number of fluid flow paths 28, and the refrigerant passages 29 are arranged at both ends in the width direction. This improves the cooling efficiency of the fluid.

[0037] Each fluid flow path 28 is closed at both ends in the height direction by a set of first seal plates 23 that are paired in the height direction (third direction Z). As a result, each fluid flow path 28 is open at both ends in the longitudinal direction (first direction X), and can guide the fluid in the longitudinal direction. The upper surface of the upper first seal plate 23 is flush with the upper surfaces of each partition plate 22, and the lower surface of the lower first seal plate 23 is flush with the lower surfaces of each partition plate 22, and the upper and lower surfaces of the first core portion 20A are flat as a whole. The number of sets of first seal plates 23 is the same as the number of fluid flow paths 28.

[0038] Each refrigerant passage 29 is closed at both longitudinal ends by a pair of second seal plates 24 that are paired in the longitudinal direction (first direction X). As a result, each refrigerant passage 29 is open at both vertical ends (third direction Z) and can guide the refrigerant in the vertical direction. An end face of the second seal plate 24 at one longitudinal end is flush with one end face of each partition plate 22, and an end face of the second seal plate 24 at the other longitudinal end is flush with the other end face of each partition plate 22, and both longitudinal sides of the first core portion 20A are flat as a whole. The number of pairs of second seal plates 24 is the same as the number of refrigerant passages 29.

[0039] The multiple first fins 25 correspond one-to-one to the multiple fluid flow paths 28. Each first fin 25 is a corrugated plate built into the corresponding fluid flow path 28. The corrugations of the first fins 25 are undulating in the width direction (second direction Y), and many corrugations are continuous in the height direction (third direction Z). Each fluid flow path 28 is divided into multiple spaces in the height direction (third direction Z) by the corresponding first fins 25. Each space is open at both ends in the longitudinal direction (first direction X).

[0040] The multiple second fins 26 correspond one-to-one to the multiple refrigerant passages 29. Each second fin 26 is a corrugated plate built into the corresponding refrigerant passage 29. The corrugations of the second fins 26 are undulating in the width direction (second direction Y), and many corrugations are continuous in the longitudinal direction (first direction X). Each refrigerant passage 29 is divided into multiple spaces in the longitudinal direction (first direction X) by the corresponding second fins 26. Each space is open at both ends in the height direction (third direction Z).

[0041] The pair of outer plates 21a sandwich from both outer sides in the width direction the above-mentioned structure including the plurality of partitions 22, the plurality of sets of first seal plates 23, the plurality of sets of second seal plates 24, the plurality of first fins 25, and the plurality of second fins 26. The outer plates 21a form the outer surfaces in the width direction of the first core portion 20A.

[0042] 2, outer plates 21b are also provided on both sides in the height direction of the first core portion 20A so as not to impede the passage of the refrigerant through the first core portion 20A. In FIG. 4, the outer plates 21b are not shown.

[0043] Each of the components of the inlet piping 11, the first inlet tank section 12A, the second inlet tank section 12B, the first core section 20A, the second core section 20B, the outlet tank section 13, and the outlet piping 14 is molded from an aluminum alloy, and the 3000 series and 5000 series are suitable as materials for the heat exchanger 5 because of their excellent strength.

[0044] In this embodiment, the first inlet tank portion 12A and the second inlet tank portion 12B are welded in the width direction (second direction Y). Furthermore, the first core portion 20A and the second core portion 20B are welded in the width direction (second direction Y). More specifically, the outer plate 21a on the other side in the width direction of the first core portion 20A (the right side in FIG. 2) is welded to the outer plate 21a on one side in the width direction of the second core portion 20B (the left side in FIG. 2).

[0045] The other side in the longitudinal direction of the first inlet tank portion 12A (the lower side in the plane of FIG. 2) and one end in the longitudinal direction of the first core portion 20A are joined by welding, as are the second core portion 20B and the second inlet tank portion 12B.

[0046] In the heat exchanger 5 of this embodiment, a fluid to be cooled flows into the inlet port 11a through the opening 11d in a high temperature state. The fluid is diverted from the diverter pipe 11b to two inlet ports 11cA and 11cB, and flows into the two inlet tank portions 12A and 12B, respectively.

[0047] The fluid in the first inlet tank portion 12A is diverted into three fluid flow paths 28 of the first core portion 20A. The fluid in the second inlet tank portion 12B is diverted into three fluid flow paths 28 of the second core portion 20B. The fluid that flows into the heat exchanger 5 is diverted into a total of six fluid flow paths 28 aligned in the width direction. In each of the fluid flow paths 28, the fluid flows from one side to the other in the longitudinal direction (see the dashed arrows in FIG. 2).

[0048] Each fluid flow path 28 is sandwiched in the width direction by two refrigerant passages 29. The fluid in each fluid flow path 28 is cooled by heat exchange with the refrigerant passing through the refrigerant passage 29 in the height direction. After being cooled, the fluid flowing through each of the multiple fluid flow paths 28 flows into the outlet tank portion 13 and is joined there. The fluid joined in the outlet tank portion 13 flows into the outlet piping 14 and flows out of the heat exchanger 5 through the opening 14a.

[0049] In this way, the so-called "one-pass system" is applied to the heat exchanger 5. The one-pass system is a system in which the fluid to be cooled flows only in one direction (from one side to the other side in the longitudinal direction in this embodiment) through the parallel multiple fluid flow paths 28, that is, the flow direction of the fluid to be cooled is not turned back in the heat exchanger 5 (in other words, the fluid does not go back and forth in the heat exchanger 5). As an example of a structure for realizing this system, in this embodiment, the outlet tank section 13 forms a space that connects the openings on the other end sides of all the fluid flow paths 28 to each other. The fluids that have flowed through the fluid flow paths 28 are joined in the internal space of the outlet tank section 13, flow through the outlet piping 14, and exit the heat exchanger 5.

[0050] The "two-pass system" is a system in which the flow path of the fluid to be cooled turns once, and the "three-pass system" is a system in which the flow path of the fluid to be cooled turns twice. By adopting the one-pass system, the pressure loss of the fluid in the heat exchanger 5 is reduced, and the energy of the compressed air can be maintained at a high level.

[0051] The inlet tank parts 12A, 12B are exposed to the fluid to be cooled and reach a high temperature, while the core parts 20A, 20B are used to cool the fluid and therefore are lower in temperature than the inlet tank parts 12A, 12B. A plurality of inlet tank parts 12A, 12B are provided, and the core parts 20A, 20B correspond one-to-one to the inlet tank parts 12A, 12B. Therefore, even if a temperature difference similar to that in the past occurs in each pair of the inlet tank parts 12A, 12B and the core parts 20A, 20B, the difference in the amount of thermal deformation is reduced. Therefore, the stress acting on the core parts 20A, 20B is reduced. This makes it possible to effectively prevent damage to the core part 20A.

[0052] The outlet tank portion 13 has a width twice as large as that of the inlet tank portions 12A and 12B, and is at a lower temperature than the core portions 20A and 20B, so stress concentration due to differences in the amount of thermal deformation is unlikely to occur.

[0053] The multiple inlet tank portions 12A, 12B and the multiple core portions 20A, 20B are arranged in the width direction (second direction Y). It can be said that the inlet tank portions and core portions, which were conventionally wide, are divided in the width direction. Therefore, when the multiple inlet tank portions 12A, 12B and the multiple core portions 20A, 20B are provided in the heat exchanger 5, the size of the heat exchanger 5 does not increase. Furthermore, when the inlet tank portions 12A, 12B and the core portions 20A, 20B are arranged in the width direction, the flow of the refrigerant passing through in the height direction (third direction Z) is not impeded, and the cooling efficiency can be maintained.

[0054] Since the multiple inlet tank portions 12A, 12B are welded to each other in the width direction (second direction Y) and the multiple core portions 20A, 20B are welded to each other in the width direction, the strength of the heat exchanger 5 can be increased.

[0055] The other ends of the multiple core portions 20A, 20B are connected to the single outlet tank portion 13. The multiple core portions 20A, 20B can be collectively attached to the single outlet tank portion 13. This also makes it possible to easily assemble the heat exchanger 5.

[0056] (Modification) Although the embodiment has been described above, the above configuration can be modified as appropriate within the scope of the present invention.

[0057] For example, as shown in Fig. 5, the multiple inlet tank portions 12A, 12B may not be welded to each other and may be arranged with a clearance C in the width direction. The multiple core portions 20A, 20B are similar. The lower limit of the clearance C exceeds 0 mm and is, for example, 10 mm. The upper limit of the clearance C is, for example, 100 mm.

[0058] For example, as shown in Fig. 6, a plurality of outlet tank parts 13A, 13B may be provided. In this case, the number of outlet tank parts 13A, 13B is the same as the number of core parts 20A, 20B and the number of inlet tank parts 12A, 12B, and the outlet pipe 14 is configured similarly to the inlet pipe 11.

[0059] The number of core portions is not limited to 2. The direction in which the multiple core portions are arranged is not limited to the width direction (second direction Y).

[0060] The heat exchanger 5 is not limited to an aftercooler 5b, and may also be applied to an intercooler 5a. The heat exchanger 5 may be provided in a compressor 1 of a type other than a two-stage screw compressor, and may be, for example, an aftercooler for a single-stage compressor. The heat exchanger 5 may also be applied to applications other than the compressor 1. [Explanation of symbols]

[0061] 1 Compressor 2 First stage compressor body 3 Second stage compressor body 4 Motors 5 Heat exchanger 5a Intercooler 5b Aftercooler 6a Suction passage 6b Intermediate flow path 6c Discharge flow path 11 Inlet piping 11a Inlet port 11b Diversion piping 11cA, 11cB inlet port 11d aperture 11e Flange 12A First inlet tank section (inlet tank section) 12B Second inlet tank section (inlet tank section) 13, 13A, 13B Outlet tank section 14 Outlet piping 14a aperture 14b flange 20A 1st core part (core part) 20B Second core part (core part) 21a Outer plate 21b Outer plate 22 Partition plate 23 First seal plate 24 Second seal plate 25 1st Fin 26 2nd Fin 28 Liquid flow path 29 Refrigerant passage X 1st direction Y Second direction Z 3rd direction

Claims

1. a plurality of core portions each forming a plurality of fluid flow paths extending in a first direction and aligned in a second direction perpendicular to the first direction, the core portions cooling a fluid to be cooled that flows through the plurality of fluid flow paths; an inlet pipe into which the fluid flows; a plurality of inlet tank portions each connected to the inlet pipe and provided at one end of the plurality of core portions in the first direction, the inlet tank portions distributing the fluid to the plurality of fluid flow paths; an outlet tank portion provided at the other end portion in the first direction of the plurality of core portions and configured to merge the fluids that have passed through the plurality of fluid flow paths from the one end portion to the other end portion; Equipped with The plurality of core portions correspond to the plurality of inlet tank portions, respectively. heat exchanger.

2. the plurality of core portions each have a plurality of coolant passages through which a coolant for cooling the fluid flowing through the fluid flow path passes; the plurality of refrigerant passages and the plurality of fluid passages are alternately arranged in the second direction; 2. The heat exchanger of claim 1.

3. The refrigerant passes through the refrigerant passage in a third direction perpendicular to the first direction and the second direction.

3. The heat exchanger of claim 2.

4. Fins are provided in each of the plurality of fluid flow paths and the plurality of refrigerant passages.

3. The heat exchanger of claim 2.

5. The plurality of inlet tank portions are arranged in the second direction, and the plurality of core portions are arranged in the second direction. A heat exchanger according to any one of claims 1 to 4.

6. The plurality of inlet tank portions are welded to each other in the second direction, and the plurality of core portions are welded to each other in the second direction.

6. The heat exchanger according to claim 5.

7. The other ends of the plurality of core portions are connected to the single outlet tank portion. A heat exchanger according to any one of claims 1 to 4.

8. A compressor comprising a heat exchanger according to any one of claims 1 to 4.

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