JP2016217635A - Heat exchanger, controller with heat exchanger and process of manufacture of heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a heat exchanging efficiency of a heat exchanger.SOLUTION: This invention relates to a heat exchanger 3 for use in heat exchanging between inner air of a controller 2 and the surrounding air. The heat exchanger has a heat sink 20, the heat sink 20 has a pair of plate members 24, 25 oppositely arranged and a plurality of fins 29 partitioning a space between the pair of plate members 24, 25 into a plurality of air channels 30 arranged side by side in planer directions of the plate members 24, 25 and the inner air and the surrounding air are alternatively flowed in at least a part of the plurality of air channels 30.SELECTED DRAWING: Figure 5

Description

  Embodiments disclosed herein relate to a heat exchanger, a controller with a heat exchanger, and a method for manufacturing a heat exchanger.

  Patent Document 1 describes a heat exchanger. The heat exchanger sucks in the inside air from the inside air inlet using the inside air suction fan, passes through the inside air passage and discharges it from the inside air outlet, and uses the outside air suction fan to discharge the outside air to the outside air inlet. The inside air and the outside air are exchanged through a partition wall between the inside air passage and the outside air passage while passing through the outside air passage, and discharged from the outside air discharge port.

JP-A-5-99578

  In the above-described conventional heat exchanger, heat is exchanged between the inside air and the outside air via the partition wall. However, the partition wall may form a part of the casing, and the thickness may increase, and the thermal resistance tends to increase. Moreover, since heat transfer is mainly performed through the partition walls, the heat transfer area is likely to be restricted by the size of the partition walls. For this reason, in order to further improve the heat exchange efficiency, further optimization of the device configuration has been demanded.

  This invention is made | formed in view of such a problem, and it aims at providing the manufacturing method of the heat exchanger which can improve heat exchange efficiency, a controller with a heat exchanger, and a heat exchanger.

  In order to solve the above problems, according to one aspect of the present invention, a heat exchanger that performs heat exchange between a first fluid and a second fluid, the heat exchanger having a heat sink, A plurality of fins that divide a space between the pair of plate members arranged in opposition to each other and a plurality of wind tunnels arranged in parallel in the surface direction of the plate member, A heat exchanger configured such that the first fluid and the second fluid flow alternately in the wind tunnel is applied.

  Moreover, according to another viewpoint of this invention, the controller with a heat exchanger which has a controller provided with the component which heat | fever-generates at the time of electricity supply, and the said heat exchanger which heat-exchanges between the inside air of the said controller, and external air Applies.

  According to still another aspect of the present invention, a plurality of wind tunnels arranged in parallel in a plane direction of the plate member with a pair of plate members arranged opposite to each other and a space between the pair of plate members. A heat exchanger having a heat sink having a plurality of fins, and exchanging heat between the first fluid and the second fluid, wherein one of the pair of plate members Forming the first openings communicating with the wind tunnel every other one of the plurality of wind tunnels, and forming the plurality of first openings formed in the one plate member on the other of the pair of plate members. Forming the first openings alternately with respect to the plurality of wind tunnels so as to be shifted in the parallel direction of the wind tunnel by one of the wind tunnels, and both ends of the plurality of wind tunnels A method for manufacturing a heat exchanger is provided.

  According to still another aspect of the present invention, a plurality of wind tunnels arranged in parallel in a plane direction of the plate member with a pair of plate members arranged opposite to each other and a space between the pair of plate members. A heat exchanger having a heat sink having a plurality of fins, and exchanging heat between the first fluid and the second fluid, wherein one of the pair of plate members Forming the first openings in communication with the wind tunnel every other one of the plurality of wind tunnels, and the plurality of first openings formed in the one plate member at both ends of the plurality of wind tunnels. Is closed with a plurality of second openings arranged so as to be shifted by one of the wind tunnels in the parallel direction of the wind tunnel.

  According to still another aspect of the present invention, a pair of plate members arranged opposite to each other and a space between the pair of plate members are arranged in parallel in the surface direction of the plate member. And a plurality of fins partitioning into the plurality of wind tunnels, and a heat sink configured to alternately flow the first fluid and the second fluid to the plurality of wind tunnels is applied.

  According to the present invention, the heat exchange efficiency of the heat exchanger can be improved.

It is a schematic diagram showing an example of the schematic structure of the whole controller with a heat exchanger provided with the heat exchanger which concerns on this embodiment. It is a disassembled perspective view showing an example of a structure of a heat exchanger. It is the perspective view seen from the back side showing an example of the composition of a heat exchanger. It is the perspective view seen from the front side showing an example of the composition of a heat exchanger. It is the rear view of a heat sink, sectional drawing by the VB-VB cross section of a heat sink, and the front view of a heat sink. It is the perspective view which looked at the heat sink from diagonally forward right. It is a disassembled perspective view showing an example of the structure of the heat exchanger of the modification which forms a slit only in one board member. It is the rear view of a heat sink, the top view of packing, sectional drawing by the VIIIC-VIIIC cross section of a heat sink, and the front view of a heat sink. It is a disassembled perspective view showing an example of the structure of the heat exchanger of the modification which makes the slit of a heat sink a continuous shape.

  Hereinafter, an embodiment will be described with reference to the drawings. In the following, for convenience of description of the configuration of the heat exchanger and the like, directions such as up, down, left, and right may be used as appropriate, but these directions indicate directions shown in the drawings. However, these directions do not limit the positional relationship of each component such as a heat exchanger.

<1. Overall schematic configuration of controller with heat exchanger>
An example of the overall schematic configuration of a controller with a heat exchanger including the heat exchanger according to the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the controller 1 with a heat exchanger includes a controller 2 having components that generate heat when energized (not shown), the inside air of the controller 2 as warm air (corresponding to an example of the first fluid), and the temperature from the warm air. Has a heat exchanger 3 that performs heat exchange with the outside air of the controller 2 as low-temperature cold air (that is, the atmosphere, which corresponds to an example of the second fluid). The heat exchanger 3 is attached to one side surface of the housing 2a of the controller 2, for example, the rear side surface 2a1.

  The controller 2 is, for example, a controller that controls an industrial robot. Such a controller is often used in an atmosphere where dust, oil mist, and the like float in a factory where the robot operates, and thus may be a sealed casing. On the other hand, since the controller 2 contains components that generate heat when energized, it is preferable to cool the inside air of the sealed casing. Therefore, the controller 1 with a heat exchanger provided with the heat exchanger 3 is used.

  For example, when the controller 2 is a device including a power conversion unit such as an inverter device, the component that generates heat when energized includes a power module, a capacitor, and the like, but is not limited thereto. Further, the second fluid that exchanges heat with the inside air is not limited to the outside air, and cold air that actively cools the outside air may be used.

  The heat exchanger 3 is provided on the opposite side of the heat sink 20 having a rectangular parallelepiped shape, the inside air fan 4 (corresponding to an example of the first fan) provided on the controller 2 side of the heat sink 20, and the controller 2 of the heat sink 20. And an outside air fan 6 (corresponding to an example of a second fan). The inside air fan 4 blows the inside air of the controller 2 to a wind tunnel (described later) of the heat sink 20. The outside air fan 6 blows the outside air of the controller 2 to a wind tunnel (described later) of the heat sink 20 in a direction facing the inside air. In the example shown in FIG. 1, the inside air fan 4 is arranged on one side of the heat sink 20 in the left-right direction (for example, the right side), and the outside air fan 6 is arranged on the other side of the heat sink 20 in the left-right direction (for example, the left side). . In this embodiment, the fans 4 and 6 are both installed on the exhaust port side and used as an exhaust fan, but may be installed on the intake port side and used as an intake fan. Further, the blowing directions of the inside air and the outside air do not necessarily have to face each other, and may be the same direction. The detailed structure of the heat sink 20 will be described later.

<2. Configuration of heat exchanger>
Next, an example of the configuration of the heat exchanger will be described with reference to FIGS. As shown in FIG. 2, the heat exchanger 3 includes a housing 10 (corresponding to an example of a case) that houses the heat sink 20, and openings 21 at both ends in the left-right direction of the heat sink 20 (the right-side opening 21 in FIG. 2). 2, and two casings 22 (corresponding to an example of a first closing member) that cover the left and right ends of a plurality of wind tunnels 30 provided on the heat sink 20, and a casing that covers the right wall 10 c of the casing 10. A cover 8, the inside air fan 4 and the outside air fan 6, and a fan cover 7 that covers the outside air fan 6 are provided.

  The housing cover 8 has, for example, a bent piece 8a that is bent vertically toward the left at the rear end. The heat sink 20 includes a pair of left and right plate members 24 and 25 arranged to face each other, and the front plate member 24 is located on the rear side surface 2a1 side of the housing 2a to which the heat exchanger 3 of the controller 2 is attached. As shown in FIG. 2 and later-described FIG. 5A, a plurality of slits 27 (corresponding to an example of a first opening) formed along the left-right direction are formed on the left and right sides of the rear plate member 25, respectively. ) Are arranged in parallel in the vertical direction. Further, as shown in FIG. 4 and FIG. 5C described later, a plurality of slits 26 (as an example of the first opening) formed along the left-right direction are formed on the left and right sides of the left plate member 24, respectively. Equivalent) are arranged in parallel in the vertical direction. In FIG. 4, the right slit 26 is hidden by the inside air fan unit 4A. The slits 26 and 27 communicate with a wind tunnel 30 provided in the heat sink 20.

  The housing 10 is, for example, a substantially rectangular parallelepiped box, and the right wall 10c is provided with a substantially rectangular opening 12 into which the heat sink 20 is inserted on the rear side in this example. A support plate 11a extending in the left-right direction is provided at the bottom of the housing 10, and the front of the support plate 11a protrudes upward to define the position of the heat sink 20 installed in the housing 10 in the front-rear direction. A plate 11b is provided. The rear wall portion 10a of the housing 10 is provided with, for example, a substantially rectangular outside air intake opening 13 and an outside air exhaust opening 14 that are divided into left and right by an intermediate separation portion 15.

  The heat sink 20 is inserted into the housing 10 from the opening 12 with the packings 22 attached to the openings 21 at both the left and right ends, and is slid backward on the support plate 11a and pushed into a predetermined position. It is. Thereafter, the housing cover 8 is put on the front packing 22 and fixed to the right wall portion 10c by the screw 41 fastened to the screw hole 41a of the right wall portion 10c. At this time, the bent piece 8a of the housing cover 8 is fastened to the rear wall portion 10a by the screw 42 fastened to the screw hole 52 of the plate member 25 of the heat sink 20 through the long hole 42a of the rear wall portion 10a of the housing 10. At the same time, it is fixed to the plate member 25. The periphery of the outside air exhaust opening 14 is fixed to the plate member 25 by screws 43 that are fastened to the screw holes 53 of the plate member 25 through the long holes 43a of the rear wall portion 10a. Accordingly, the heat sink 20 is installed in a state where it is positioned in the housing 10.

  The packing 22 is a plate member made of, for example, metal, resin, rubber material, or the like. The packing 22 may be any member that can close both the left and right ends of the air channel 30 of the heat sink 20, and the shape, size, material, and the like are not particularly limited.

  As shown in FIG. 3, in the heat sink 20 installed in the housing 10, the slit 27 on the right side of the plate member 25 is positioned in the outside air intake opening 13, and the left side slit 27 is in the outside air exhaust opening 14. So that it is located within. The left slit 27 of the plate member 25 is covered by the outside air fan unit 6A.

  On the left side of the rear wall portion 10 a of the housing 10, an outside air fan mounting frame 16 is attached around the outside air exhaust opening 14. The outside air fan mounting frame 16 includes one or a plurality of circular openings 16a in this example. The three circular openings 16a are arranged in the vertical direction. The outside air fan unit 6A includes one or a plurality of, in this example, three outside air fans 6, an outside air fan mounting frame 16, and the same number of fan covers 7 as the outside air fans 6. The three outside air fans 6 are arranged vertically. Has been. The three outside air fans 6 are inserted with a plurality of screws (not shown) into the corresponding screw holes 16b of the outside air fan mounting frame 16 and fastened with nuts (not shown), for example, so that each fan faces the circular opening 16a. It is attached to the outside air fan mounting frame 16. The fan cover 7 is attached to each outside air fan 6. The fan cover 7 is provided with a large and small concentric annular wires, and covers the exhaust port of the corresponding outside air fan 6.

  On the other hand, as shown in FIG. 4, the front wall portion 10 b of the housing 10 is largely opened so as to have an opening portion 17 that is substantially the same size as the front side surface of the housing 10. The heat sink 20 installed in the housing 10 is disposed so as to be biased rearward by a thickness in the front-rear direction so that the inside air fan unit 4A is accommodated in the housing 10. The front plate member 24 of the heat sink 20 is located in a state of being retracted backward from the opening portion 17, and the left and right slits 26 of the plate member 24 are facing the opening portion 17 at the retracted positions, respectively. . The right slit 26 is covered by the inside air fan unit 4A. Around the slit 26 on the right side, the inside air fan mounting frame 18 is attached by a screw 44 fastened to a screw hole 54 (see FIG. 5C described later) of the plate member 24.

  The inside air fan unit 4A includes one or more inside air fans 4, and in this example, three inside air fans 4 and an inside air fan mounting frame 18, and the three inside air fans 4 are arranged vertically. The three inside air fans 4 are attached to the inside air fan mounting frame 18 by inserting a plurality of screws (not shown) into corresponding screw holes of the inside air fan mounting frame 18 and fastening them with nuts (not shown), for example. The inside air fan unit 4A attached to the plate member 24 of the heat sink 20 is housed inside so as not to protrude from the housing 10, and is arranged so that the three inside air fans 4 face the slit 26 on the right side. For example, a grommet 19 for inserting a cable is provided on the left wall portion 10d of the housing 10.

<3. Detailed structure of heat sink>
Next, an example of a detailed structure of the heat sink 20 will be described with reference to FIGS. 5 (a) to 5 (c) and FIG. 6. 5A is a rear view of the heat sink 20, and FIG. 5B is a cross-sectional view of the heat sink 20 viewed from the left along the VB-VB cross section of FIGS. 5A and 5C. FIG. 3C is a front view of the heat sink 20. FIG. 6 is a perspective view of the heat sink 20 as viewed from the right side on the plate member 24 side.

  As shown in FIG. 5B, the heat sink 20 includes a pair of the plate member 24 and the plate member 25 arranged to face each other, and a plurality of fins 29 provided between the plate member 24 and the plate member 25. With. The plurality of fins 29 divide the space between the plate member 24 and the plate member 25 into the plurality of wind tunnels 30 arranged in parallel in the vertical direction (corresponding to an example of the surface direction of the plate member). The wind tunnel 30 is a channel through which the inside air and the outside air flow, and the shape of each wind tunnel 30 viewed from the left and right directions is, for example, a rectangular shape having the same area. The upper end and the lower end of the plate member 24 and the plate member 25 are connected by a top plate 28a and a bottom plate 28b, respectively.

  As shown in FIGS. 5 (b), 5 (c) and 6, the plurality of slits 26 formed on each of the right and left sides of the plate member 24 are vertically aligned with respect to the plurality of wind tunnels 30. It is formed every other and communicates with every other wind tunnel 30. As shown in FIG. 5A, FIG. 5B, and FIG. 6, the plurality of slits 27 formed on the right and left sides of the plate member 25 are one in the vertical direction with respect to the plurality of wind tunnels 30. It is formed at every other place and communicates with every other wind tunnel 30. Further, the slit 26 and the slit 27 are arranged so as to be shifted by one of the wind tunnels 30 in the parallel direction of the wind tunnel 30 (that is, the vertical direction). Such a structure of the heat sink 20 realizes a configuration in which the inside air and the outside air alternately flow through the plurality of wind tunnels 30.

  In the example shown in FIG. 5, for example, due to manufacturing or design reasons, among the plurality of wind tunnels 30, one wind tunnel 30 at the upper end and two wind tunnels 30 at the lower end are not used. However, the present invention is not limited to this, and the wind tunnel 30 may be configured such that the inside air and the outside air flow alternately.

<4. Heat exchange operation of heat exchanger>
An example of the heat exchange operation by the heat exchanger 3 will be described. The heat exchanger 3 operates the outside air fan 6 and the inside air fan 4 to exchange heat between the inside air of the controller 2 and the outside air of the heat exchanger 3.

  That is, by the operation of the outside air fan 6, the outside air of the heat exchanger 3 flows to the right side of the plate member 25 of the heat sink 20 through the outside air suction opening 13 of the housing 10 as indicated by an arrow in FIG. The air flows into the heat sink 20 from the slit 27 and is blown from the right side to the left side in the wind tunnel 30. Further, due to the operation of the inside air fan 4, the inside air of the controller 2 flows from the slit 26 on the left side of the plate member 24 of the heat sink 20 through the opening 17 of the housing 10 as indicated by an arrow in FIG. The air flows into the wind tunnel 30 and is blown from the left side toward the right side in the wind tunnel 30.

  As a result, as shown in FIG. 5B, the inside air flowing in every other wind tunnel 30 of the plurality of wind tunnels 30 and the inside of every other wind tunnel 30 adjacent to the wind tunnel 30 through which the inside air of the plurality of wind tunnels 30 flows. Is exchanged with the outside air flowing in the direction opposite to the inside air through the fins 29. That is, the heat of the inside air is transferred to the outside air through the fins 29. The inside air cooled by the heat exchange flows out of the heat sink 20 from the slit 26 on the right side of the plate member 24 and is discharged into the controller 2 from the opening 17 of the front wall portion 10b of the housing 10, and the inside of the controller 2 is cooled. Is done. On the other hand, the outside air heated by the heat exchange flows out of the heat sink 20 through the slit 27 on the left side of the plate member 25, and passes from the outside air exhaust opening 14 of the rear wall portion 10 a of the housing 10 to the outside of the heat exchanger 3. Discharged.

<5. Manufacturing method of heat exchanger>
The heat sink 20 having the above-described configuration can be manufactured using a general-purpose heat sink (for example, a two-side or four-side mounting type heat sink) that is generally distributed. The heat sinks of these general-purpose products include a pair of plate members arranged opposite to each other, and a plurality of fins that partition a space between the pair of plate members into a plurality of wind tunnels arranged in parallel in the plane direction of the plate members. I have.

  First, one of the pair of plate members of the general-purpose heat sink, for example, the plate member 24, is formed with every other slit 26 communicating with the wind tunnel 30 for each of the plurality of wind tunnels 30. Next, the other of the pair of plate members, for example, the plate member 25, is displaced from the plurality of slits 26 formed in the plate member 24 by one wind tunnel 30 in the parallel direction (vertical direction) of the wind tunnel 30. In this manner, every other slit 27 is formed with respect to the plurality of wind tunnels 30. These slits 26 and 27 can be formed by, for example, milling. Thus, the heat sink 20 according to the present embodiment is manufactured.

  Thereafter, both end portions of the plurality of wind tunnels 30 are closed using a closing member such as a packing 22. Then, the heat exchanger 20 is manufactured by inserting and fixing the heat sink 20 into the housing 10 and attaching the housing cover 8, the inside air fan 4, the outside air fan 6, and the like.

<6. Effects of the embodiment>
As described above, the heat exchanger 3 of the present embodiment is a heat exchanger that performs heat exchange between the inside air and the outside air, and has the heat sink 20, and the heat sink 20 is a pair arranged to face each other. Plate members 24, 25 and a plurality of fins 29 that divide the space between the pair of plate members 24, 25 into a plurality of wind tunnels 30 arranged in parallel in the plane direction of the plate members 24, 25. The inside air and the outside air flow alternately in at least a part of the plurality of wind tunnels 30.

  With the above configuration, the inside air is sandwiched by the outside air from both sides in the vertical direction, and heat transfer from the inside air to the outside air is performed via the plurality of fins 29, so that heat transfer is performed via the plate members 24, 25 and the like. Compared to the case, the heat transfer area can be greatly increased. Further, since the fins 29 of the heat sink are generally formed thinner than the plate members 24 and 25, the partition walls between the inside air and the outside air become the fins 29, so that the partition walls can be greatly reduced. Furthermore, since there is no contact between two or more members in the heat transfer path (for example, a separate heat sink is attached to the plate members 24 and 25 serving as partition walls), no contact thermal resistance occurs. As described above, the heat resistance between the inside air and the outside air can be reduced, so that the heat exchange efficiency can be improved.

  In the present embodiment, in particular, the heat sink 20 includes at least one of the pair of plate members 24 and 25 (both in the present embodiment) and one slit 26 and 27 communicating with the wind tunnel 30 for each of the plurality of wind tunnels 30. It is formed in a place. Thereby, there exists the following effect.

  That is, the slits 26 and 27 allow air to flow into and out of the heat sink 20 from a direction (the direction in which the plate members 24 and 25 are arranged, that is, the front-rear direction) different from the direction in which the wind tunnel 30 extends (left-right direction). Therefore, the degree of freedom of arrangement of fans and the like is increased. Therefore, the freedom degree of design of the heat exchanger 3 can be improved.

  In the present embodiment, in particular, the heat sink 20 has slits 26, 27 formed on both of the pair of plate members 24, 25 every other wind tunnel 30. The plurality of formed slits 26 and the plurality of slits 27 formed in the other plate member 25 are arranged so as to be shifted by one of the wind tunnels 30 in the parallel direction (vertical direction) of the wind tunnel 30. Thereby, there exists the following effect.

  That is, by forming the slits 26 and 27 in both the pair of plate members 24 and 25, the inside air and the outside air can be flowed into and out of the heat sink 20 from both sides in the front-rear direction. Thereby, since the inside air fan 4 and the outside air fan 6 can be arrange | positioned in the front-back direction of the heat sink 20, the dimension (namely, left-right direction dimension) in the extension direction of the wind tunnel 30 of the heat exchanger 3 can be reduced in size. .

  Further, by forming the slit 26 of one plate member 24 and the slit 27 of the other plate member 25 by shifting one slit in the parallel direction of the wind tunnel 30, the inside air and the outside air are alternately placed in the plurality of wind tunnels 30. A flowing configuration can be realized.

  In this embodiment, in particular, the heat exchanger 3 has two packings 22 that close the openings 21 at the left and right ends of the plurality of wind tunnels 30. Thereby, since it is possible to prevent air from flowing into and out of the heat sink 20 from other than the slits 26 and 27, it is possible to secure the air volume of the inside air via the slit 26 and the outside air via the slit 27, and increase the effect of improving the heat exchange efficiency. be able to. In addition, since the flow path of the inside air and the flow path of the outside air can be blocked, it is possible to ensure the sealing degree of the controller 2 to which the heat exchanger 3 is attached.

  The slit 26 and the slit 27 are separately formed in the plate member 24 and the plate member 25 on one side and the other side in the extending direction (left-right direction) of the wind tunnel 30, respectively. Thereby, there exists the following effect.

  That is, by forming the slit 26 and the slit 27 separately in the extending direction of the wind tunnel 30, it is possible to separate the intake port and the exhaust port with respect to the heat sink 20, and to perform the heat exchange from the intake port to the exhaust port without heat exchange. The air flowing to the Therefore, heat exchange efficiency can be improved. In addition, the flow of air in the heat sink 20 can be adjusted by adjusting the distance between the separated slits 26 and the distance between the slits 27.

  In the present embodiment, in particular, the heat exchanger 3 is configured such that the inside air fan 4 configured to blow the inside air to the wind tunnel 30 and the outside air configured to send the outside air to the wind tunnel 30 in a direction opposite to the inside air. And a fan 6. Thus, in the plurality of wind tunnels 30, the inside air and the outside air can be alternately flowed while the blowing directions of the inside air and the outside air are opposed to each other, so that the heat exchange efficiency can be further improved.

  In the present embodiment, in particular, the controller 1 with a heat exchanger includes a controller 2 that includes a component that generates heat when energized, and the heat exchanger 3 that performs heat exchange between the inside air and the outside air of the controller 2. Have. Thereby, the controller 1 with a heat exchanger which improved the heat exchange efficiency as mentioned above, ensuring the sealing degree of the controller 2 is realizable.

  In addition, as described above, the heat sink 20 according to the present embodiment forms slits 26 and 27 by, for example, milling using a heat sink that is generally distributed (for example, a double-sided or four-sided heat sink). Can be manufactured. Accordingly, since no special parts or special processing methods are used, an increase in cost can be suppressed. Moreover, since a general-purpose heat sink with high availability is used, there is an advantage that it can be easily applied to, for example, a product with a small number of shipments.

<7. Modification>
The disclosed embodiments are not limited to the above, and various modifications can be made without departing from the spirit and technical idea thereof. Hereinafter, such modifications will be described.

(7-1. When forming a slit only on one plate member)
In the above-described embodiment, the slit 26 and the slit 27 are provided in both of the pair of plate members 24 and 25 of the heat sink 20, but the slit is formed only in one plate member, and the two front and rear packings are used as packings with slits. Also good.

  An example of the configuration of the heat exchanger according to this modification is shown in FIGS. 7 and 8A to 8D. 7 is an exploded perspective view of the heat exchanger 3A according to the present modification, FIG. 8A is a rear view of the heat sink 20A according to the present modification, and FIG. 8B is provided on the left side of the heat sink 20A. 8C is a plan view of the packing 22A, FIG. 8C is a cross-sectional view of the heat sink 20A as viewed from the left along the VIIIC-VIIIC cross section of FIGS. 8A and 8D, and FIG. 8D is a heat sink 20A. FIG.

  As shown in FIGS. 7 and 8 (a) to 8 (d), in this modification, the heat sink 20A is provided on one of the pair of plate members 24, 25, in this example, on the front plate member 24. The slits 26 are formed alternately for the plurality of wind tunnels 30. On the other hand, no slit is formed in the rear plate member 25. The two packings 22 </ b> A (corresponding to an example of the second closing member) that close both the left and right ends of the plurality of wind tunnels 30 have openings 62 (corresponding to an example of the second opening) communicating with the wind tunnel 30 with respect to the plurality of wind tunnels 30. Every other one is formed. The plurality of slits 26 formed in the plate member 24 and the plurality of openings 62 formed in the packing 22 </ b> A are disposed so as to be shifted by one of the wind tunnels 30 in the parallel direction (vertical direction) of the wind tunnel 30.

  On the other hand, an opening 64 having a size slightly smaller than the packing 22A, for example, is formed in the housing cover 8A. The housing cover 8A attached to the right wall portion 10c and the plate member 25 of the housing 10 with the screws 41 and 42 is fixed so that the opening 64 faces the right packing 22A. An outside air fan unit 60 </ b> A is disposed on the left side of the housing 10. The outside air fan unit 60 </ b> A includes one or a plurality of, in this example, three outside air fans 60 arranged in the vertical direction, and an outside air fan mounting frame (not shown) attached to the left side of the housing 10. In this example, the outside air fan 60 is an exhaust fan installed on the exhaust port side (left side of the housing 10), but may be an intake fan installed on the intake port side (right side of the housing 10). Further, an opening having the same shape and size as the opening 64 of the housing cover 8A is formed in the left wall portion 10d of the housing 10 (see FIG. 4). Other configurations of the heat exchanger 3A of the present modification are the same as those in the above-described embodiment.

  Next, an example of the heat exchange operation by the heat exchanger 3A having the above configuration will be described. By the operation of the outside air fan 60, the outside air of the heat exchanger 3A flows into the heat sink 20A through the opening 64 of the housing cover 8 and the opening 62 of the right packing 22A as indicated by an arrow in FIG. The wind tunnel 30 is blown from the right side toward the left side. Further, due to the operation of the inside air fan 4, the inside air of the controller 2 flows from the slit 26 on the left side of the plate member 24 of the heat sink 20 </ b> A through the opening 17 of the housing 10 as indicated by an arrow in FIG. The air flows into the wind tunnel 30 and is blown from the left side toward the right side in the wind tunnel 30.

  As a result, as shown in FIG. 8 (c), the inside air flowing in every other wind tunnel 30 of the plurality of wind tunnels 30 and the inside of every other wind tunnel 30 adjacent to the wind tunnel 30 through which the inside air of the plurality of wind tunnels 30 flows. Is exchanged with the outside air flowing in the direction opposite to the inside air through the fins 29. The inside air cooled by heat exchange flows out of the heat sink 20A from the slit 26 on the right side of the plate member 24, and is discharged into the controller 2 from the opening 17 (see FIG. 4) of the front wall 10b of the housing 10. The inside of the controller 2 is cooled. On the other hand, the outside air heated by the heat exchange flows out of the heat sink 20A from the left opening 21 of the heat sink 20A, and passes through the opening 62 of the left packing 22A and the opening (not shown) of the left wall 10d of the housing 10. It is discharged outside the heat exchanger 3A.

  The packing 22A is, for example, a metal plate, and the opening 62 can be formed by punching, for example. However, the packing 22A may be any member that can close both the left and right ends of a part of the air channel 30 of the heat sink 20A, and the shape, size, material, and the like are not particularly limited.

  In the example shown in FIG. 8, for example, due to manufacturing or design reasons, outside air flows in the same direction for the three wind tunnels 30 at the lower end of the plurality of wind tunnels 30. However, the wind tunnel 30 may be configured such that the inside air and the outside air flow alternately.

  Similarly to the heat sink 20 described above, the heat sink 20A having the above-described configuration can be manufactured by using a general-purpose heat sink (for example, a two-sided or four-side mounting type heat sink) that is generally distributed.

  That is, first, slits 26 communicating with the wind tunnel 30 are formed in every other wind tunnel in one of the pair of plate members of the general-purpose heat sink, in this example, the plate member 24. The slit 26 can be formed by, for example, milling. Next, both ends of the plurality of wind tunnels 30 are arranged so as to be shifted from the plurality of slits 26 formed in the plate member 24 by one wind tunnel 30 in the parallel direction (vertical direction) of the wind tunnel 30. The opening 62 is left and closed. This blockage is performed by attaching two packings 22A to the left and right ends of the heat sink 20A. In this way, the heat sink 20A according to this modification is manufactured.

  Thereafter, the heat sink 20A is inserted and fixed in the housing 10, and the housing cover 8A, the inside air fan 4, the outside air fan 60, and the like are attached, whereby the heat exchanger 3A is manufactured.

  In the present modification, one of the inside air and the outside air, for example, the outside air is blown in the extending direction of the wind tunnel 30 with respect to the heat sink 20A, and the other side, for example, the inside air is lateral (forward) with respect to the heat sink 20A. ). Thereby, compared with the case where both the inside air and the outside air are flowed in and out from the side (front-rear direction), the flow path resistance can be reduced and the flow path resistance can be reduced for one side, so that the heat exchange efficiency can be improved. In addition, in this modification, only one of the pair of plate members 24 and 25 may be formed with a slit only in the plate member 24, so that the processing is less than when the slits are formed in both the plate members 24 and 25. Therefore, the manufacturing process can be reduced and the cost can be reduced.

  Further, according to the manufacturing method of the heat exchanger 3A according to this modification, as described above, the packings 22A having the openings 62 are installed on both the left and right sides of the heat sink 20A, so that both end portions of the plurality of wind tunnels 30 are attached. The opening 62 can be left and closed. This eliminates the need for milling of the plate member 25 and, as described above, the opening 22 can be formed in the packing 22A by, for example, punching, which is more cost effective than milling. For example, the cost can be reduced as compared with the case where slits are formed in both plate members 24 and 25.

(7-2. When making the slits of the heat sink into a continuous shape)
In the above-described embodiment, the slits 26 and 27 are formed in a shape separated from the plate members 24 and 25 of the heat sink 20 in the left-right direction. An example of the structure of the heat exchanger of this modification is shown in FIG.

  As shown in FIG. 9, in the heat exchanger 3B of this modification, a plurality of non-separating slits 32 having a continuous shape along the extending direction (left-right direction) of the wind tunnel 30 are formed in the plate member 25 of the heat sink 20B. (Corresponding to an example of the first opening) is formed. Each non-separation slit 32 communicates with the wind tunnel 30, and is formed for every other wind tunnel 30. Although not shown, the plate member 24 on the front side of the heat sink 20B is formed with a plurality of slits 26 separated in the left-right direction as in the heat sink 20 described above (see FIGS. 4 and 5). . The plurality of non-separating slits 32 formed in the plate member 25 and the plurality of slits 26 formed in the plate member 24 are arranged so as to be shifted by one of the wind tunnels 30 in the parallel direction (vertical direction) of the wind tunnel 30. ing.

The non-separation slit 32 is a separation part 15 (corresponding to an example of a closing part) of the rear wall part 10a of the housing 10.
Thus, the intermediate portion is closed. In addition, when providing the separation part of the shape similar to the said separation part 15 which divides the opening part 17 into right and left in the intermediate part of the front wall part 10b of the housing | casing 10, also about the slit 26 of the board member 24 also about the wind tunnel 30 It is good also as a non-separation slit which is a continuous shape in the extending direction.

  According to this modification, by forming the non-separating slit 32 in a continuous shape along the extending direction of the wind tunnel 30, the processing time can be shortened and the cost can be reduced as compared with the case where the slits are formed separately. Can be reduced.

  In addition, in the above description, when there are descriptions such as “vertical”, “parallel”, and “plane”, the descriptions are not strict. That is, the terms “vertical”, “parallel”, and “plane” are acceptable in design and manufacturing tolerances and errors, and mean “substantially vertical”, “substantially parallel”, and “substantially plane”. .

  In addition, in the above description, when there are descriptions such as “same”, “equal”, “different”, etc., in terms of external dimensions and sizes, the descriptions are not strict. That is, the terms “identical”, “equal”, and “different” mean that “tolerance and error in manufacturing are allowed in design and that they are“ substantially identical ”,“ substantially equal ”,“ substantially different ”. .

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination. In addition, although not illustrated one by one, the above-mentioned embodiment and each modification are implemented with various modifications within a range not departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 Controller with heat exchanger 2 Controller 3 Heat exchanger 3A Heat exchanger 3B Heat exchanger 4 Inside air fan (an example of a 1st fan)
6 Outside air fan (example of second fan)
15 Separating part (an example of a blocking part)
20 heat sink 20A heat sink 22 packing (an example of a first closing member)
22A packing (an example of a second closing member)
24 plate member 25 plate member 26 slit (example of first opening)
27 Slit (example of first opening)
29 Fin 30 Wind tunnel 32 Non-separation slit (example of first opening)
62 opening (example of second opening)

Claims (12)

A heat exchanger for exchanging heat between a first fluid and a second fluid,
Have a heat sink,
The heat sink is
A pair of plate members arranged opposite to each other;
A plurality of fins that divide a space between the pair of plate members into a plurality of wind tunnels arranged in parallel in the surface direction of the plate members;
The heat exchanger is configured such that the first fluid and the second fluid flow alternately in at least a part of the plurality of wind tunnels. The heat sink is
2. The heat exchanger according to claim 1, wherein at least one of the pair of plate members is formed with every other first opening communicating with the wind tunnel with respect to the plurality of wind tunnels. The heat sink is
In each of the pair of plate members, the first openings are formed alternately with respect to the plurality of wind tunnels,
The plurality of first openings formed in one plate member and the plurality of first openings formed in the other plate member are shifted by one of the wind tunnels in the parallel direction of the wind tunnel. The heat exchanger according to claim 2, wherein the heat exchanger is arranged. The heat exchanger according to claim 3, further comprising a plurality of first closing members that respectively close both ends of the plurality of wind tunnels. A plurality of second closing members that respectively close both ends of the plurality of wind tunnels;
The heat sink is
One of the pair of plate members, the first openings are formed alternately with respect to the plurality of wind tunnels,
The second closing member is
The second openings communicating with the wind tunnel are formed alternately with respect to the plurality of wind tunnels, and the plurality of first openings formed in the plate member and the plurality of holes formed in the second closing member. The heat exchanger according to claim 2, wherein the second opening is arranged so as to be shifted by one of the wind tunnels in the parallel direction of the wind tunnel. The first opening is
The heat exchanger according to any one of claims 2 to 5, wherein the plate member is separately formed on one side and the other side in the extending direction of the wind tunnel. A case for accommodating the heat sink;
The first opening is
The plate member is formed in a continuous shape along the extending direction of the wind tunnel,
The case is
The heat exchanger according to any one of claims 2 to 5, further comprising a closing portion that closes an intermediate portion of the plurality of first openings with respect to at least one of the pair of plate members. A first fan configured to blow the first fluid to the wind tunnel;
8. The apparatus according to claim 1, further comprising: a second fan configured to blow the second fluid to the wind tunnel in a direction opposite to the first fluid. The described heat exchanger. A controller with components that generate heat when energized;
The heat exchanger according to any one of claims 1 to 8, wherein heat exchange is performed between the first fluid and the second fluid of the controller.
A controller with a heat exchanger. A heat sink comprising: a pair of plate members arranged opposite to each other; and a plurality of fins that divide a space between the pair of plate members into a plurality of wind tunnels arranged in parallel in a plane direction of the plate member. And a method of manufacturing a heat exchanger for exchanging heat between the first fluid and the second fluid,
Forming every other one of the pair of plate members with respect to the plurality of wind tunnels, the first openings communicating with the wind tunnel;
On the other of the pair of plate members, the first openings formed in the one plate member are arranged so as to be shifted by one of the wind tunnels in the parallel direction of the wind tunnel. Forming alternate openings for the plurality of wind tunnels;
Closing both ends of the plurality of wind tunnels;
A method for producing a heat exchanger, comprising: A heat sink comprising: a pair of plate members arranged opposite to each other; and a plurality of fins that divide a space between the pair of plate members into a plurality of wind tunnels arranged in parallel in a plane direction of the plate member. And a method of manufacturing a heat exchanger for exchanging heat between the first fluid and the second fluid,
Forming every other one of the pair of plate members with respect to the plurality of wind tunnels, the first openings communicating with the wind tunnel;
A plurality of second openings arranged at both ends of the plurality of wind tunnels are shifted from the plurality of first openings formed in the one plate member by one of the wind tunnels in the parallel direction of the wind tunnel. Leaving it blocked,
A method for producing a heat exchanger, comprising: A heat sink for exchanging heat between a first fluid and a second fluid,
A pair of plate members arranged opposite to each other;
A plurality of fins that divide a space between the pair of plate members into a plurality of wind tunnels arranged in parallel in the surface direction of the plate members;
The heat sink, wherein the first fluid and the second fluid flow alternately in at least a part of the plurality of wind tunnels.

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