JP2010101596A - Heat exchanger and method of manufacturing the same - Google Patents

Abstract

To provide a heat exchanger that can be manufactured easily and at low cost, and that can obtain a high cooling effect, and a method of manufacturing the same.
In a heat exchanger 10, a fin member 20 including a plurality of fins 22 forming a refrigerant flow path 25 is arranged in a refrigerant flow direction (direction A) inside a frame 30 forming an outer frame. They are arranged side by side. The frame 30 includes projecting portions 35a, 35b, and 36 that protrude into the frame 30 and extend in a direction (direction B) intersecting the refrigerant flow direction. The convex portions 35a, 35b, and 36 extend to the inner walls on both sides of the frame 30 in the B direction, and are arranged in parallel at a predetermined interval in the A direction. The fin member 20 is disposed between adjacent convex portions 35a, 35b, and 36.
[Selection] Figure 1

Description

  The present invention relates to a heat exchanger that releases heat by a refrigerant flowing inside. More specifically, the present invention relates to a heat exchanger that cools fine components such as semiconductor elements.

  Conventionally, an inverter device having a power conversion function has been used as a power source for a hybrid vehicle or the like. The inverter device includes a plurality of semiconductor elements as switching elements. Since the semiconductor element of the inverter device generates heat with power conversion or the like, it has to be actively cooled.

Here, as a heat exchanger for cooling fine components such as semiconductor elements, a refrigerant flow path is formed by arranging a plurality of linearly extending fins in parallel inside the frame forming the outer frame. One is known (Patent Document 1).
JP 2007-335588 A

However, the heat exchanger as disclosed in Patent Document 1 has the following problems.
That is, in such a heat exchanger, as shown in FIG. 8, according to the speed distribution of the refrigerant flowing between the fins 101 and 101 (see the thick line arrow), the speed of the refrigerant decreases as the fin 101 is approached. This is because the refrigerant is pulled by the fins 101 due to the influence of the viscosity of the refrigerant. Thereby, the area | region (boundary layer) 102 where the refrigerant | coolant flow speed is slow compared with another area | region or the refrigerant | coolant almost stopped is formed in the fin 101 vicinity. When the boundary layer 102 is formed, the heat-collected fin 101 mainly exchanges heat only with the refrigerant 103a in the boundary layer 102 formed around the fin 101, and flows in a region other than the boundary layer 102. Heat exchange with the refrigerant 103b is hardly performed. As a result, there is a problem in that heat cannot be effectively exchanged with the entire refrigerant flowing inside the heat exchanger, and a high cooling effect cannot be obtained.

  In order to suppress the formation of the boundary layer 102, the inventors in a fin member 110 having a plurality of fins 112 that form a refrigerant flow path 114 on a plate-like base 111, as shown in FIG. 9. In addition, it was considered to form a protrusion 113 extending between the adjacent fins 112 in a direction intersecting with the refrigerant flow direction (see thick line arrow) and projecting toward the tip of the fin 112 (Japanese Patent Application No. 2008-179786, Application 2008-190946). The protrusion 113 is formed by plastically deforming the base 111, pressing another part between the fins 112, or bonding another part to the base 111 or the fin 112.

  According to the fin member 110, the refrigerant flowing through each flow path 114 can collide with the protrusion 113 and be agitated. Thereby, the turbulent flow 115 is generated in the flow of the refrigerant, and the formation of the boundary layer 102 (see FIG. 8) can be effectively suppressed. As a result, the semiconductor element 116 can be effectively exchanged heat with the entire refrigerant flowing inside the heat exchanger.

  However, in this fin member 110, it is necessary to form the protrusion 113 in each flow path 114 formed between the adjacent fin members 112. That is, it is necessary to form a large number of protrusions 113. For this reason, there is a problem that the operation of forming the protrusion 113 becomes complicated and the manufacturing cost of the fin member 110 increases.

Further, miniaturization and high cooling performance are required for the fin member 110 that cools fine components such as semiconductor elements. Therefore, it is necessary to form a plurality of fins 112 in a fine shape and narrow the width of the flow path 114 formed between the adjacent fins 112. However, when the width of the flow path 114 is narrowly formed in this way, the base 111 is plastically deformed, another part is press-fitted between the fins 112, or the base 111 or the fin 112 is separated. The operation | work which adhere | attaches components was difficult.
In particular, when the base 111 is press-molded to form a large number of protrusions 113, it is necessary to use a mold having a fine shape corresponding to each fin 112. However, since the mold having such a fine shape has low strength, there is a risk of breakage during pressing. Further, since the width of the flow path 114 is narrow, the operation of attaching the forming die itself is difficult.

  Accordingly, the present invention has been made to solve the above-described problems, and it is an object to provide a heat exchanger that can be manufactured easily and at low cost, and that can obtain a high cooling effect, and a method for manufacturing the same. And

  The heat exchanger according to the present invention, which has been made to solve the above-described problems, includes a fin member having a plurality of fins forming a refrigerant flow path in a frame forming an outer frame, and a refrigerant flow direction. In the heat exchanger arranged side by side, the frame includes a convex portion that protrudes into the frame and extends in a direction that intersects the flow direction of the refrigerant.

In this heat exchanger, fin members including a plurality of fins that form a flow path for the refrigerant are arranged in the flow direction of the refrigerant inside the frame that forms the outer frame. And the refrigerant | coolant which flowed into the heat exchanger flows through the flow path formed of each fin. Here, the frame of the heat exchanger is provided with a convex portion that protrudes into the frame and extends in a direction intersecting the refrigerant flow direction. With such a configuration, the refrigerant flowing through each flow path can be agitated by colliding with the convex portion. Thereby, a turbulent flow is generated in the flow of the refrigerant, and the formation of the boundary layer (see reference numeral 102 shown in FIG. 8) can be effectively suppressed. As a result, a high cooling effect can be obtained by effectively utilizing the entire refrigerant flowing inside the heat exchanger.
Moreover, in this heat exchanger, the convex part is formed in the flame | frame which arrange | positions a fin member instead of a fin member. As described above, by forming the convex portions on the frame, the convex portions can be formed easily and at a lower cost than when a large number of convex portions (projections) are formed on the fin member to be finely processed. Further, in this heat exchanger, when the fin member is disposed inside the frame, the convex portion can be used for positioning of the fin member. Thereby, assembly | attachment of a fin member can be made easy and manufacture of a heat exchanger can be made easy.

In the heat exchanger according to the present invention, it is desirable that the convex portion is integrally formed with the frame by a mold.
Here, “molded integrally with the frame” includes a case where the frame is formed of a plurality of parts and integrally formed with one part of the frame.

  In this way, by forming the convex part integrally with the frame by the mold, the base (refer to reference numeral 111 shown in FIG. 9) constituting the fin member is plastically deformed to form the convex part, or between the fins. There is no need to press-fit another part or to attach another part to the base or fin. Therefore, the heat exchanger according to the present invention can be manufactured more easily.

  In the heat exchanger according to the present invention, it is desirable that the convex portion is extended to the inner walls on both sides of the frame in a direction crossing the flow direction of the refrigerant.

In this way, by extending the convex part to the inner walls on both sides of the frame in the direction intersecting the refrigerant flow direction, the refrigerant flowing through all the flow paths formed between the fins is reliably caused to collide with the convex part. Can be stirred. Thereby, a turbulent flow can be reliably generated in the refrigerant flowing through all the flow paths, and the formation of the boundary layer can be more effectively suppressed. As a result, the refrigerant flowing inside the heat exchanger can be more effectively used to obtain a higher cooling effect.
In addition, by extending the protrusions to the inner walls on both sides of the frame in this way, the number of protrusions necessary to enhance the cooling effect can be reduced as much as possible (a large number of protrusions can be avoided). Therefore, a heat exchanger can be manufactured more easily and at low cost.

  In the heat exchanger according to the present invention, it is desirable that the convex portion is orthogonal to the flow direction of the refrigerant.

  Thus, by making the convex part orthogonal to the flow direction of the refrigerant, the maximum flow resistance can be formed in the direction intersecting the flow direction of the refrigerant. As a result, turbulence can be generated most effectively, and the cooling effect can be more reliably enhanced.

  The heat exchanger which concerns on this invention WHEREIN: The said convex part is arranged in parallel at predetermined intervals in the flow direction of the said refrigerant | coolant, and the said fin member is arrange | positioned between the said adjacent convex parts. desirable.

Thus, by arranging the convex portions in parallel in the refrigerant flow direction at a predetermined interval and disposing the fin member between the adjacent convex portions, the fin member can be easily placed inside the frame using the convex portion. Can be arranged.
Here, although not particularly limited, it is preferable that the interval between the adjacent convex portions is approximately the same as the length of the fin member in the refrigerant flow direction. In this way, by setting the interval between the adjacent convex portions to be approximately the same as the length of the fin member in the flow direction of the refrigerant, the fin members arranged in the frame can be held so as not to be displaced by the convex portions. it can.

  In order to solve the above problems, a heat exchanger manufacturing method according to the present invention includes a fin member including a plurality of fins forming a refrigerant flow path in a frame forming an outer frame. In the method of manufacturing a heat exchanger arranged in the flow direction, the forming step includes forming the frame, and the disposing step of disposing the fin member inside the frame formed by the forming step. Then, the frame and a protrusion projecting into the frame, extending in a direction intersecting the refrigerant flow direction, and juxtaposed at a predetermined interval in the refrigerant flow direction are integrally formed by a mold. And it is desirable to arrange | position the said fin member between the said adjacent convex parts at the said arrangement | positioning process.

In this heat exchanger manufacturing method, in the molding step, the frame and the convex portion extending in a direction crossing the flow direction of the refrigerant are integrally molded by a mold. In this way, by forming the convex part integrally with the frame by the mold, the base constituting the fin member is plastically deformed, or another part is press-fitted between the fins, in order to form the convex part. Or, it is not necessary to attach another part to the fin. Therefore, the heat exchanger according to the present invention can be manufactured more easily. Further, by forming convex portions extending in the direction intersecting with the refrigerant flow direction on the frame, the convex portions can be formed easily and at a lower cost than when a large number of convex portions are formed on the fin member to be finely processed. be able to. The formed convex portions protrude into the frame, extend in a direction intersecting the refrigerant flow direction, and are arranged in parallel at a predetermined interval in the refrigerant flow direction. Therefore, according to the heat exchanger manufactured by this manufacturing method, a turbulent flow can be generated in the flow of the refrigerant flowing inside the heat exchanger, and the formation of the boundary layer can be effectively suppressed. As a result, a high cooling effect can be obtained by effectively utilizing the entire refrigerant flowing inside the heat exchanger. Further, in the arrangement step, the fin member can be easily arranged inside the frame by using the convex portion by arranging the fin member between the adjacent convex portions.

  In order to solve the above problems, a heat exchanger manufacturing method according to the present invention includes a fin member including a plurality of fins forming a refrigerant flow path in a frame forming an outer frame. In the method of manufacturing a heat exchanger arranged side by side in the flow direction, the molding step includes molding the frame, and the step of arranging the fin member inside the frame molded by the molding step. Then, it is desirable that the fin members and the plate-like members extending in the direction intersecting the refrigerant flow direction are alternately arranged in the refrigerant flow direction.

  In this heat exchanger manufacturing method, in the arranging step, fin members and plate-like members extending in a direction crossing the refrigerant flow direction are alternately arranged in the refrigerant flow direction so that each fin member is a plate. It can arrange | position, positioning or holding | maintaining with a shaped member. According to the heat exchanger manufactured by this manufacturing method, a turbulent flow can be generated in the flow of the refrigerant flowing inside the heat exchanger by the plate-like member, and the formation of the boundary layer can be effectively suppressed. As a result, a high cooling effect can be obtained by effectively utilizing the entire refrigerant flowing inside the heat exchanger. In addition, by using a plate-like member that is a separate part from the frame and the fin member, in order to form a plurality of convex portions, the base constituting the fin member is plastically deformed, or a separate part is provided between the fins. There is no need to press fit or attach another part to the base or fin. Thereby, a heat exchanger can be manufactured easily and at low cost.

  According to the heat exchanger and the method for manufacturing the same according to the present invention, as described above, it is possible to provide a heat exchanger that can be manufactured easily and at low cost and can obtain a high cooling effect.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a most preferred embodiment in which a heat exchanger according to the present invention and a manufacturing method thereof are embodied will be described in detail with reference to the drawings. In the present embodiment, a case will be described in which the heat exchanger according to the present invention is applied to a semiconductor element of an inverter device that is required to be downsized and highly cooled. The heat exchanger according to the two embodiments described below is configured to release heat by a refrigerant (for example, cooling water) flowing inside.

[First embodiment]
First, the heat exchanger which concerns on 1st embodiment is demonstrated, referring FIGS. 1-3. FIG. 1 is a perspective view showing the overall configuration of the heat exchanger according to the first embodiment. FIG. 2 is a perspective view showing a fin member of the heat exchanger. FIG. 3 is an exploded perspective view showing a frame of the heat exchanger.
As shown in FIG. 1, the heat exchanger 10 according to the present embodiment includes a frame 30 that forms an outer frame, and four fin members 20 that are accommodated in the frame 30.

The fin members 20 are arranged side by side at a predetermined interval in the refrigerant flow direction (A direction). Moreover, all the fin members 20 are formed in the same shape. As shown in FIG. 2, each fin member 20 includes a base 21 having a rectangular plate shape extending in a direction (B direction) orthogonal to the A direction, and a plurality of fins 22 protruding from one surface of the base 21. .
Each fin 22 has a rectangular plate shape, and ten fins 22 are arranged in the B direction. More specifically, the fins 22 are arranged in a direction parallel to the A direction and at a predetermined interval in the B direction. Thus, a refrigerant flow path 25 having a predetermined width and guiding the refrigerant in the A direction is formed between the fins 22.

  As shown in FIG. 3, the frame 30 includes a mold frame 32 having a substantially U-shaped cross section and a contact plate 31 for covering the mold frame 32. The fin member 20 is accommodated inside the frame 30 by brazing the abutting plate 31 to the side walls 33 and 34 of the mold frame 32 in a state where the fin member 20 is accommodated in the mold frame 32. Yes. One end of the frame 30 that opens is an introduction port 30a for introducing the refrigerant, and the other end of the frame 30 that opens is a discharge port 30b for discharging the refrigerant.

  The mold 32 includes an inlet-side convex portion 35a formed on the inlet 30a side, a discharge-side convex portion 35b formed on the outlet 30b side, an inlet-side convex portion 35a, and a outlet-side convex portion 35b. And an intermediate convex portion 36 formed between the two. In addition, the introduction port side convex part 35a, the discharge port side convex part 35b, and the intermediate | middle convex part 36 of this embodiment are examples of the "convex part" of this invention.

The introduction port side convex portion 35 a is a step formed on the introduction port 30 a side of the mold 32 so as to protrude into the frame 30. The introduction port side convex portion 35a extends in the B direction. That is, the inlet-side convex portion 35a is orthogonal to the refrigerant flow direction. And the inlet side convex part 35a has reached the inner wall surface of the both-sides walls 33 and 34 of the mold frame 32 in B direction.
The discharge port side convex portion 35 b is a step formed on the discharge port 30 b side of the mold 32 so as to protrude into the frame 30. The discharge port side convex portion 35b is also extended in the B direction. That is, the discharge port side convex portion 35b is orthogonal to the refrigerant flow direction. And the discharge port side convex part 35b has reached the inner wall surface of the both-sides walls 33 and 34 of the mold frame 32 in B direction. Further, the inlet-side convex portion 35a and the outlet-side convex portion 35b are formed at the same height so as not to prevent the refrigerant from being introduced into the frame 30 or discharged from the frame 30. It is designed to be somewhat low.

The intermediate protrusion 36 is a plate-like protrusion formed between the introduction port side protrusion 35 a and the discharge port side protrusion 35 b so as to protrude into the frame 30. This intermediate convex part 36 is also extended in the B direction. That is, the intermediate convex part 36 is orthogonal to the flow direction of the refrigerant. And the intermediate convex part 36 has reached the inner wall surface of the both side walls 33 and 34 of the mold frame 32 in the B direction. Three intermediate convex portions 36 are arranged in parallel in the A direction at a predetermined interval. And all the intermediate | middle convex parts 36 are formed in the same height and thickness. Moreover, the intermediate | middle convex part 36 is formed higher than the inlet port side convex part 35a and the discharge port side convex part 35b.
Furthermore, in this embodiment, the space | interval of each adjacent convex part 35a, 35b, 36 is made into the same grade as the length of the A direction of the fin member 20. FIG. Further, the fin member 20 described above is arranged between the adjacent convex portions 35a, 35b, and 36 (see FIG. 1).

A method of manufacturing the heat exchanger 10 configured as described above will be briefly described with reference to FIG. FIG. 4 is an explanatory view showing a state in which the fin members of the heat exchanger according to the present embodiment are arranged in the frame.
The manufacturing process of the heat exchanger 10 includes a fin member molding process for molding the fin member 20, a frame molding process for molding the frame 30, and a fin member arrangement process for arranging the fin member 20 inside the frame 30. It is out.

  In the fin member molding step, all the fin members 20 are molded by extrusion molding using one type of molding die. Thus, by forming the fin member 20 by extrusion molding, the fine fin member 20 having the plurality of fins 22 can be manufactured with high accuracy. Thereby, the fin member 20 which can respond also to the small components which are small and require high cooling performance like the semiconductor element 11 can be manufactured. Moreover, since it shape | molds using one type of shaping | molding metal mold | die, the fin member 20 can be manufactured easily and at low cost.

In the frame forming step, the mold 32 and the convex portions 35a, 35b, and 36 are integrally formed by die casting using a mold. In this step, the contact plate 31 is formed by processing a flat plate into a predetermined shape, for example.
In this way, the convex portions 35a, 35b, and 36 are integrally formed with the mold frame 35a by a mold, so that the convex portions 35a, 35b, 36 can be formed easily and at low cost. Further, in order to form the convex portions 35a, 35b, 36, for example, the base 21 constituting the fin member 20 is plastically deformed, another part is press-fitted between the fins 22, or another part is attached to the base 21 or the fin 22. There is also no need to glue them. Therefore, the heat exchanger 10 can be manufactured easily and at low cost.

In the fin member arranging step, as shown in FIG. 4, the four fin members 20 are arranged between the adjacent convex portions 35 a, 35 b and 36. In FIG. 4, the two fin members 20 are already arranged on the mold 32. Subsequently, the fin member 20a is disposed in a space C formed by the bottom surface of the mold 32, the intermediate convex portion 36a, and the intermediate convex portion 36b. Thereafter, the fin member 20b is disposed in the space D formed by the bottom surface of the mold 32, the intermediate convex portion 36b, and the inlet-side convex portion 35, thereby completing the disposition of the fin member 20.
Here, the convex portions 35a, 35b, and 36 are juxtaposed at a predetermined interval in the A direction. With such a configuration, the fin member 20 can be easily placed inside the frame 30 using the convex portions 35a, 35b, and 36. Further, the interval between the adjacent convex portions 35a, 35b, and 36 is set to be approximately the same as the length of the fin member 20 in the A direction. With such a configuration, the fin member 20 disposed can be held by the convex portions 35a, 35b, and 36 so as not to be displaced.

The effect of the heat exchanger 10 having the above configuration will be described with reference to FIGS. FIG. 5 is an explanatory diagram showing a use state of the heat exchanger according to the present embodiment. FIG. 6 is an explanatory diagram showing the operation of the heat exchanger.
As shown in FIG. 5, in the heat exchanger 10 according to the present embodiment, a semiconductor element 11 as a heating element is attached to the upper surface or the lower surface of a frame 30 via a heat spreader 12 that is a heat diffusion member. Although FIG. 5 shows a case where the abutting plate 31 is used as the lower surface and the mold 32 is used as the upper surface, the abutting plate 31 may be used as the upper surface and the mold 32 may be used as the lower surface. The heat spreader 12 is a heat diffusion member made of, for example, aluminum or copper, and is disposed on the upper surface of the frame 30 so as to cover a wide area.

  On the upper surface of the heat spreader 12, a semiconductor element 11 as a heating element is placed. Although one semiconductor element 11 is placed in FIG. 5, a plurality of elements 11 may be placed according to the size of the heat exchanger 10 or the element 11 or the like. Thus, by placing the semiconductor element 11 on the upper surface of the heat spreader 12, heat generated from the semiconductor element 11 can be diffused over a wide area.

  And a refrigerant | coolant is introduce | transduced into the inside of the heat exchanger 10 from the inlet 30a, as shown by the thick line arrow in FIG. The refrigerant introduced into the heat exchanger 10 flows in the A direction according to the flow path 25 formed by the fins 22 of the fin members 20.

  Here, the mold 32 of the heat exchanger 10 includes a plurality of protrusions 35b and 36 that project into the frame 30 and extend in a plate shape in a direction intersecting the A direction. With such a configuration, the refrigerant flowing through the flow path 25 formed by the fins 22 can be stirred by the convex portions 35b and 36. Thereby, as shown by the thick line arrow in FIG. 6, turbulent flow is generated in the refrigerant flow, and the formation of the boundary layer (see reference numeral 102 shown in FIG. 8) can be effectively suppressed. As a result, a high cooling effect can be obtained by effectively utilizing the entire refrigerant flowing inside the heat exchanger 10.

  Moreover, in this heat exchanger 10, since each convex part 35b and 36 is extended to the both-sides inner wall of the flame | frame 30 in B direction, the refrigerant | coolant which flows through all the flow paths 25 formed between each fin 22 is used. It can be made to collide with the convex part 36 reliably and can be stirred. Thereby, a turbulent flow can be reliably generated in the refrigerant flowing through all the flow paths 25, and the formation of the boundary layer can be more effectively suppressed.

  Furthermore, in this heat exchanger 10, since the intermediate convex part 36 is orthogonal to the A direction which is the refrigerant flow direction, the maximum flow resistance can be formed in the direction intersecting the refrigerant flow direction. . As a result, turbulence can be generated most reliably and the cooling effect can be reliably increased. Further, in order to obtain the same cooling effect, the intermediate convex portion 36 can be formed to be the shortest in the direction intersecting the refrigerant flow direction. That is, the convex part 36 can be formed with a minimum material. Thereby, the manufacturing cost of the heat exchanger 10 can be reduced.

  Thereafter, the refrigerant passes through the flow paths 25 of all the fin members 20, finishes heat exchange with each fin 22, and then is discharged to the outside from the discharge port 30 b.

  On the other hand, the semiconductor element 11, which is a heating element, transfers heat generated by itself to the heat spreader 12. The heat transmitted to the heat spreader 12 is diffused so as to spread over the entire spreader 12. The heat diffused in this way is transmitted to the frame 30 that contacts the heat spreader 12. The heat transferred to the frame 30 is transferred to the fins 22 of the fin members 20 housed inside the frame 30. As described above, the fins 22 and the entire refrigerant effectively exchange heat. In this way, the semiconductor element 11 is effectively cooled by the heat exchanger 10.

  As described above in detail, according to the heat exchanger 10 according to the present embodiment, the heat exchanger 10 can be manufactured easily and at a low cost, and a high cooling effect can be obtained by using the convex portions 35a, 35b, and 36. The arrangement of the member 20 can be facilitated.

[Second Embodiment]
Next, the heat exchanger according to the second embodiment and the manufacturing method thereof will be described with reference to FIG. FIG. 7 is an exploded perspective view showing each member of the heat exchanger according to the second embodiment. In the heat exchanger according to the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof is omitted as appropriate. explain.
The heat exchanger 40 according to the present embodiment is different from the first embodiment described above in the shape of the mold that forms the frame. Further, the heat exchanger 40 is different from the first embodiment described above in that a plurality of plate-like members are newly provided.

As shown in FIG. 7, the mold 41 according to the present embodiment has a U-shaped cross section. The bottom plate 45 of the mold 41 and the inner surfaces of the side walls 43 and 44 are formed flat. In other words, unlike the first embodiment, there is no convex portion protruding inside the frame.
Each plate-like member 42 has a rectangular shape and is formed with a length slightly shorter than the length of the mold 41 in the B direction. The plate member 42 is disposed between the adjacent fin members 20.
Note that the abutting plate 31 that covers the mold 41 is the same as that of the first embodiment, and the description and illustration thereof are omitted.

A method of manufacturing the heat exchanger 40 configured as described above will be briefly described with reference to FIG.
The manufacturing process of the heat exchanger 40 includes a fin member forming step for forming the fin member 20, a frame forming step for forming the frame, and a fin member arranging step for disposing the fin member 20 inside the frame. In addition, since it is the same as above-described 1st embodiment about the fin member shaping | molding process, the description is abbreviate | omitted.

  In the frame forming step, for example, the mold 41, the contact plate 31, and the plate member 42 are separately formed by processing a flat plate into a predetermined shape. In this manner, by processing the flat plate to form the mold 41, the contact plate 31, and the plate-like member 42, the heat exchanger 40 can be easily manufactured and the manufacturing cost can be reduced.

In the fin member arranging step, the fin members 20 and the plate-like members 42 (42a, 42b) are alternately arranged in the A direction. In FIG. 7, the two fin members 20 a and 20 b are already arranged on the mold 41. Although not shown in FIG. 7, a plate-like member 42 is disposed in contact with both the fin members 20 a and 20 b between the fin member 20 a and the fin member 20 b. Subsequently, the fin member 20c is disposed in contact with the plate-like member 42a. Thereafter, the plate-like member 42b is disposed in contact with the fin member 20c. Finally, the fin member 20d is disposed in contact with the plate-like member 42b. Thus, the arrangement of the fin member 20 is completed.
Thus, by arranging the fin members 20 and the plate-like members 42 alternately, the fin members 20 can be arranged while being positioned or held by the plate-like members 42. When the plate-like member 42 is arranged, it may be joined to the mold 41. By thus joining the plate-like member 42 to the mold 41, the positioning or holding of the fin member 20 can be made more reliable.

[Example of change]
Here, the example of a change of a fin member arrangement | positioning process is demonstrated easily.
In the fin member arranging step according to the modified example, the plate-like member 42 is arranged on the mold 41 in advance. More specifically, the plate-like members 42 are arranged side by side in the A direction with an interval similar to the length of the fin member 20 in the A direction. At this time, a groove for fitting the plate member 42 may be formed in advance on the inner bottom surface 45 of the mold 41 or the inner surfaces of the side walls 43 and 44 in accordance with the arrangement position of the plate member 42. Thus, by forming the groove for fitting the plate-like member 42 in the mold 41, the plate-like member 42 can be easily and reliably fixed to the arrangement position without joining.

  And after arrange | positioning the plate-shaped member 42, the fin member 20 is arrange | positioned in the space partitioned off by the plate-shaped member 42. FIG. Thus, by forming a space for arranging the fin member 20 in advance by the plate-like member 42, the fin member 20 can be easily and accurately arranged.

  According to the heat exchanger 40 having the above configuration, the boundary layer is formed by generating turbulent flow in the flow of the refrigerant flowing inside the heat exchanger 40 by the plate-like member 42 as in the first embodiment. Can be effectively suppressed. As a result, a high cooling effect can be obtained by effectively utilizing the entire refrigerant flowing inside the heat exchanger 40. Moreover, such a heat exchanger 40 can be manufactured easily and at low cost.

  It should be noted that the above-described embodiment is merely an example, and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention. An example is shown below.

  In the above-described embodiment, the case where the present invention is applied to the semiconductor element 11 is shown. However, the present invention is not limited to this, and the present invention can be applied to various fine parts that require a cooling effect. .

  In the above-described embodiment, the case where the intermediate convex portion 36 and the plate-like member 42 have a plate-like shape has been described. However, the shape of the convex portion 36 and the plate-like member 42 can be freely changed according to the purpose and the like. Can do. For example, you may form in a comb-tooth shape which has the convex part matched with the position of the flow path 25. FIG. Thereby, a convex part can be formed only in a required part and material cost can be reduced.

It is a perspective view showing the whole heat exchanger composition concerning a first embodiment. It is a perspective view which shows the fin member of the same heat exchanger. It is a disassembled oblique view which shows the flame | frame of the same heat exchanger. It is explanatory drawing which shows a mode that the fin member of the same heat exchanger is arrange | positioned in a flame | frame. It is explanatory drawing which shows the use condition of the same heat exchanger. It is explanatory drawing which shows the effect | action of the same heat exchanger. It is a disassembled perspective view which shows each member of the heat exchanger which concerns on 2nd embodiment. It is explanatory drawing which shows a mode that a boundary layer is formed. It is a perspective view which shows the heat exchanger which inventors considered.

Explanation of symbols

10 Heat exchanger (first embodiment)
20, 20a to 20d Fin member 21 Base 22 Fin 25 Flow path 30 Frame 31 Plate 32 Mold frame 33 Side wall 34 Side wall 35a Inlet side convex part 35b Outlet side convex part 36 Intermediate convex part 40 Heat exchanger (second embodiment) Form)
41 Formwork 42a Plate-like member 42b Plate-like member A Flow direction B of cooling water Direction orthogonal to direction A

Claims (7)

In a heat exchanger in which fin members including a plurality of fins forming a refrigerant flow path are arranged in the flow direction of the refrigerant inside the frame forming the outer frame,
The frame includes a convex portion that protrudes into the frame and extends in a direction that intersects the flow direction of the refrigerant. The heat exchanger according to claim 1,
The heat exchanger according to claim 1, wherein the convex portion is integrally formed with the frame by a mold. The heat exchanger according to claim 1 or claim 2,
The convex portion is extended to the inner walls on both sides of the frame in a direction crossing the flow direction of the refrigerant. In the heat exchanger as described in any one of Claims 1-3,
The said convex part is orthogonal to the flow direction of the said refrigerant | coolant, The heat exchanger characterized by the above-mentioned. In the heat exchanger as described in any one of Claims 1-4,
The convex portions are juxtaposed at a predetermined interval in the flow direction of the refrigerant,
The said fin member is arrange | positioned between the said adjacent convex parts, The heat exchanger characterized by the above-mentioned. In the heat exchanger manufacturing method in which fin members including a plurality of fins that form refrigerant flow paths are arranged in the flow direction of the refrigerant inside the frame that forms the outer frame.
A molding step of molding the frame;
An arrangement step of arranging the fin member inside the frame formed by the molding step,
In the molding step, the frame and a protrusion projecting into the frame, extending in a direction intersecting with the flow direction of the refrigerant, and arranged in parallel at a predetermined interval in the flow direction of the refrigerant, Is integrally molded by
In the arrangement step, the fin member is arranged between the adjacent convex portions. In the heat exchanger manufacturing method in which fin members including a plurality of fins that form refrigerant flow paths are arranged in the flow direction of the refrigerant inside the frame that forms the outer frame.
A molding step of molding the frame;
An arrangement step of arranging the fin member inside the frame formed by the molding step,
In the arrangement step, the fin member and the plate-like members extending in a direction intersecting with the flow direction of the refrigerant are alternately arranged in the flow direction of the refrigerant.

Images