JP2012199412A - Heat exchanger for cooling inside body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger installable for a downsized body, which realizes both of high heat exchange performance and high air volume in an inside-air-side.SOLUTION: Air inside a heating component housing body 2 comes from outside a heat exchanger case 3 into inside the heat exchanger case, by an inside-air-side fan 5, through an inside-air-side intake port provided to the heat exchanger case, and separates to upward and downward. Then, it flows between inside-air-side fins 14 provided in an inside-air-side passage 19, losing heat thereof by the inside-air-side fins, and goes out through top and bottom of first and second inside-air-side exhaust ports 8, 9. The air cools because loosing heat thereof, and flows on a surface of a heat component (not shown) removing heat thereof, so that the heat component becomes cool. The air rises in heat thereof because it circulates in the heat component housing body to remove heat from the heating component, and returns into a heat exchanger for cooling body 1 by the inside-air-side fan again.

Description

  The present invention relates to a heat exchanger for cooling inside a casing.

  In machining factories, etc., in order to prevent contamination and damage of electronic parts and electrical wiring parts due to dust, cutting fluid, etc., these electronic parts and electrical wiring parts are rarely stored and used in a sealed enclosure. Absent. When the amount of heat generated by the electronic components is large, heat radiation from the surface of the housing alone will increase the air temperature inside the housing, and the temperature of the heat generating components will rise above the allowable temperature, shortening the service life or malfunctioning. Problem occurs. In order to avoid the problem, it is not possible to ventilate by directly taking outside air into the inside of the enclosure. Instead, heat exchange is performed between the air inside the enclosure and the air outside the enclosure. The method of performing is used.

As a heat exchanger having a general configuration used for such a purpose, as shown in FIG. 14, an inside air flow path 19 through which the air inside the heat generating component storage housing 2 flows and an outside of the heat generating component storage housing 2 are provided. The outside air flow path 20 through which air flows is partitioned by a heat exchange heat sink 12 (see FIG. 3) and corrugated fins 18 (see FIG. 4) in which fins are installed on both surfaces of the base plate, and the inside air side flow path 19 becomes the inside air flow path 19. The air inside the heat generating component housing 2 is flowed, and the air outside the heat generating component housing 2 is flowed to the outside air flow path 20 by the outside air fan 6, and the air inside the heat generating component housing 2 and the heat generating component housing 2 A structure in which heat is exchanged between air outside the body 2 is common. The structure is somewhat complicated and the assembly cost increases. Further, as shown in FIG. 15, a structure in which the inside air fan 5 and the outside air fan 6 are thermally connected by a heat pipe 31 having a very high thermal conductivity is well known. The structure is somewhat complicated and the assembly cost increases.
With respect to the heat exchanger for cooling inside the casing, Patent Document 1 discloses that the cooling device to be retrofitted in the casing is a dual structure composed of an inside air passage through which air inside the casing flows and an outside air passage through which air outside the casing flows. A technique is disclosed in which heat is exchanged between the air inside the casing and the air outside the casing at the heavy structure portion, and the heat generated inside the casing is released to the outside of the casing.

Japanese Patent No. 4403823

  In recent years, as a trend of technology, as with other electronic devices, housings containing heat-generating components are also required to be downsized. As the housing becomes smaller, the amount of heat released from the surface of the housing decreases and it is necessary to increase the amount of heat released by the heat exchanger, but there is no point in enlarging the heat exchanger. That is, there is a need for a heat exchanger that is small and has a high heat exchange capacity. Further, when the heat exchange capability is high, the temperature of the inside air in the housing is lowered, but the temperature of the heat generating component is not necessarily lowered. This is because the amount of heat released by heat transfer from the heat generating component to the inside air is proportional to the temperature difference between the heat generating component and the inside air, and at the same time, is approximately proportional to the square root of the flow velocity of the air flowing on the surface of the heat generating component. In order to increase the flow rate of air in the housing, the use of a stirring fan may be considered. However, in order to secure a space for installing the stirring fan, it is inevitable that the housing is increased in size accordingly. In order to increase the flow rate of air in the casing without using a stirring fan, the flow rate (air volume) from the inside air side exhaust port of the heat exchanger may be increased. However, when trying to increase the heat exchange capacity of a small heat exchanger, the fin pitch becomes fine in order to secure a large surface area of the heat absorption fins provided in the inside air flow path in the heat exchanger. As shown in FIG. 13, the flow rate tends to decrease according to the pressure-flow rate characteristic (PQ characteristic) of the inside air side fan that flows air into the inside air side flow path. There is a problem that.

Further, in the technology disclosed in Patent Document 1, a special structure in which the inside air fan is rotated by one motor, a plurality of heat exchangers are installed, and a case of a cooler (heat exchanger) is provided. Due to the structure with irregularities and the shape of the partition plate is complicated, there is a problem that a centrifugal fan with high component cost and assembly cost and high static pressure is difficult to obtain. Even when an axial fan is used, the partition plate, which is a complete shielding obstacle, is closely adjacent to the suction or discharge side in the axial direction of the axial fan. It is not structured to obtain air volume.
Heat exchangers for small enclosures are often required to be low in cost, and it is necessary to minimize the increase in the number of parts, the use of expensive parts, and the increase in assembly costs. It is necessary to solve the above problems with a simple structure.

  SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide an inexpensive heat exchanger that can be installed in a downsized housing while achieving both high heat exchange capability and high air volume on the inside air side. .

  The invention according to claim 1 of the present application is installed on the wall surface of the housing that houses the heat-generating component, and is used to flow out the air in the housing that has flowed in and the inside air inlet for flowing in the air in the housing. A heat exchanger case provided with an inside air side exhaust port, and a first partition member that partitions the inside of the heat exchanger case into an inside air flow path through which air in the housing flows and an outside air flow path through which air outside the housing flows. A heat exchange heat sink provided with an internal air side fin on the surface of the internal air side flow path and an external air side fin on the surface of the external air side flow path, and the air in the housing is sucked from the internal air side intake port, and the internal air side An inside air side fan that exhausts air from the inside air side exhaust port through the inside air side flow path provided with fins, and an outside air side air intake port through which air outside the housing flows into the heat exchange case Intake air, the outside air side fin is provided An outside air fan that exhausts air from the outside air outlet through which the air outside the housing that has flowed in flows out through the outside air flow path, and the heat exchange heat sink is perpendicular to the first partition member and the inside air fin. A first heat exchange heat sink having a length in a direction perpendicular to a cross section, wherein the inside air-side exhaust port is provided with at least one near one end in the length direction of the heat exchange heat sink. An inside air side exhaust port and at least one second inside air side exhaust port provided in the vicinity of the other end in the length direction of the heat exchange heat sink are configured. Provided between a side exhaust port and the second room air side exhaust port, the room air side fan is an axial fan, and is disposed to face a front end portion of the room air side fin, and by the room air side fan, Air in the housing A heat exchanger for cooling inside a casing, wherein the heat is exhausted from both the first room air side exhaust port and the second room air side exhaust port through the room air side flow path from the room air side intake port. It is.

According to a second aspect of the present invention, the inside air inlet and the inside air fan are placed at a position where the exhaust temperature from the first inside air outlet and the exhaust temperature from the second inside air outlet are substantially equal. The heat exchanger for cooling in a housing according to claim 1, wherein the heat exchanger is for cooling inside a housing.
According to a third aspect of the present invention, an outer shape of the heat exchanger case is provided for a flange portion for attaching the heat exchanger for cooling in the housing to the housing, and for the inside air inlet and the inside air outlet. 3. The heat exchanger for cooling inside a casing according to claim 1, wherein the heat exchanger is a substantially rectangular parallelepiped except for the opening and is manufactured by processing a sheet metal.
According to a fourth aspect of the present invention, the heat exchange heat sink is a molded article made of aluminum or an aluminum alloy manufactured by extrusion molding from a mold, and the molded article is placed in a predetermined direction in the length direction of the heat exchange heat sink. The heat exchanger for cooling in a housing according to any one of claims 1 to 3, wherein a cutting process other than cutting to length is not performed.
According to a fifth aspect of the present invention, there is provided a first filling member between a front end portion of the inside air-side fin between the inside air side intake port and the first inside air side exhaust port and an inner surface of the heat exchanger case, The second filling member is installed between a front end portion of the inside air side fin between the inside air side intake port and the second inside air side exhaust port and an inner surface of the heat exchanger case. The heat exchanger for cooling in a housing according to any one of Items 1 to 4.
According to a sixth aspect of the present invention, there is provided a second partition member in which fins are not formed on a surface having substantially the same width as the first partition member constituting the heat exchange heat sink, and the length of the first partition member. It is connected to at least one end of the direction, and the whole length of the partition member is extended, The heat exchanger for cooling inside a casing according to any one of claims 1 to 5.

  According to the present invention, it is possible to provide an inexpensive heat exchanger that is compatible with both high heat exchange capability and high air volume on the inside air side, while being able to be installed in a miniaturized housing.

It is an external appearance perspective view of the heat exchanger for cooling in a case of Embodiment 1 of the present invention. It is a schematic sectional drawing which shows the structure of the heat exchanger for cooling in a housing | casing of Embodiment 1 of this invention. It is an external appearance perspective view of the heat exchange heat sink used for the heat exchanger for cooling in a case of Embodiment 1 of the present invention. It is an external appearance perspective view of the corrugated fin used for the heat exchanger for cooling in a housing of Embodiment 1 of the present invention. It is an external appearance perspective view of the heat exchanger for cooling in a case which shows the modification of Embodiment 1. It is a schematic sectional drawing of the heat exchanger for cooling in a housing | casing which shows the modification of Embodiment 1. It is a schematic sectional drawing of the heat exchanger for cooling in a housing | casing which shows the other modification of Embodiment 1. It is a schematic sectional drawing which shows the structure of the heat exchanger for cooling in a housing | casing by Embodiment 2 of this invention. It is a schematic sectional drawing which shows the structure of the heat exchanger for cooling in a housing | casing by Embodiment 3 of this invention. It is a schematic sectional drawing which shows the structure of the heat exchanger for cooling in a housing | casing by Embodiment 4 of this invention, The state (a) which attached the panel which attached the external air side fan to the housing | casing, and the state removed from the housing | casing ( It is a figure which shows b). Schematic sectional view (a) showing the structure of the heat exchanger for cooling in a casing according to Embodiment 5 of the present invention and an external view (b) of the heat exchanger as seen from the inside air fan mounting surface side with the inside air side fan removed. It is. It is a schematic sectional drawing which shows the structure of the heat exchanger for cooling in a housing | casing by Embodiment 6 of this invention. It is a figure which shows typically the pressure-flow rate characteristic (PQ characteristic) of an axial flow fan and a centrifugal fan. It is a cross-sectional schematic diagram which shows the structure of the heat exchanger for cooling in a housing | casing which concerns on the prior art. It is a cross-sectional schematic diagram which shows the structure of the heat exchanger for cooling in a housing | casing which concerns on the prior art which uses a heat pipe.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Embodiment 1>
1, FIG. 2, FIG. 3 and FIG. 4 show Embodiment 1 of the present invention, and FIG. 1 is a perspective view of the heat exchanger of Embodiment 1 as viewed from the inside of the housing. These are the cross-sectional schematic diagrams which show the structure of this heat exchanger of the state attached to the inner side of a housing | casing, and the white arrow has shown the flow of air. FIG. 3 is a perspective view of a heat exchange heat sink used in the heat exchanger. FIG. 4 is an external perspective view of a corrugated fin used in the in-casing cooling heat exchanger according to the first embodiment of the present invention.

As shown in FIG. 2, the air in the heat generating component housing 2 is connected to the inside air inlet 7 from the outer surface of the heat exchanger case 3 and the tip of the inside air fin 14 of the inside air fin 14. 15 (see FIG. 3), the inside air side fan 5 disposed opposite to the inside air side air inlet 7 provided in the heat exchanger case 3 is sucked into the heat exchanger case 3 and flows into the inside air side flow. The air flows into the passage 19 and is divided into upper and lower hands, and flows between the inside air-side fins 14 provided in the inside air-side flow passages 19 and 19 while the heat is taken away by the inside air-side fins 14, and the upper and lower first and second inside air The air is exhausted from the side exhaust ports 8 and 9.
When the heat is removed, the temperature of the air is lowered, and the air exhausted from the first and second inside air side exhaust ports 8 and 9 flows through the surface of the heat generating component (not shown) to generate heat from the heat generating component. Take away and lower the temperature of the heat generating parts. The air in the heat generating component housing case 2 whose temperature has been raised by removing heat from the heat generating component while circulating in the heat generating component housing case 2 is again returned to the inside of the heat exchanger 1 for cooling in the case by the inside air side fan 5. Returned to In order to keep the temperature of the heat generating component low, the temperature difference between the heat generating component and the air in the heat generating component housing 2 is large, and the flow rate of air from the first and second inside air side exhaust ports 8 and 9 (air volume) ) Is large, and the air flow rate (wind velocity) on the surface of the heat generating component is required to be large.

  In the first embodiment, the first and second room air side exhaust ports 8 and 9 are provided at two locations in the upper and lower sides, and the room air side fan 5 and the room air side air intake port 7 are connected to the first and second room air side exhaust ports 8 and 8. Since it is installed between 9, the fin pitch is made fine (ie, the number of fins is increased), the overall length is lengthened, and heat exchange with a large fin surface area is essential for obtaining high heat exchange capacity. A heat sink 12 (see FIG. 3) can be used. Since the distance from the inside air inlet 7 to the first and second inside air outlets 8 and 9 is short and the cross-sectional area of the flow path flowing in the vertical direction is large, the inside air inlet 7 The pressure loss to the second inside air side exhaust ports 8 and 9 is small, and the air volume from the first and second inside air side exhaust ports 8 and 9 can be increased. The positions of the inside air side fan 5 and the inside air side intake port 7 are set such that the exhaust temperature from the first inside air side exhaust port 8 and the exhaust temperature from the second inside air side exhaust port 9 are substantially equal. The inside air-side fin 14 has a low heat release amount from either one of the inside air-side exhaust port 8 or the second inside air-side exhaust port 9 so that air that remains at a high temperature is recirculated into the heat generating component housing 2. It is desirable because it can prevent a decrease in heat exchange capacity due to a state where only a part is utilized.

  The heat exchanger case 3 is provided for the flange 4 (see FIG. 5) of the heat exchanger case 3 to be mounted on the wall surface of the heat generating component housing 2, the inside air inlet 7 and the inside air outlets 8 and 9. Except for the opening portion, it is a substantially rectangular parallelepiped, and can be manufactured easily by processing a sheet metal, so that it can be manufactured at low cost.

  The heat exchange heat sink 12 shown in FIG. 3 has a constant cross-sectional shape perpendicular to the length direction, and is a molded product that can be manufactured by extrusion molding from an aluminum or aluminum alloy mold. Since no cutting process other than cutting to length is applied, it can be manufactured at low cost. The heat exchange heat sink 12 can be manufactured at the lowest cost if it is manufactured by simply cutting a molded product made of aluminum or aluminum alloy, which is manufactured by extrusion molding from a mold, into a predetermined length. In combination with the use of only a single heat exchange heat sink 2 while providing a plurality of inside air-side exhaust ports 8 and 9, both the parts cost and assembly cost required for the heat exchange heat sink 12 can be reduced.

  If the heat exchanger case 3 is cut out or poured into a mold, the production cost will increase, or the case will become thick and difficult to downsize, but the heat exchanger case 3 will be a simple cuboid. Thus, since it can be easily manufactured only by cutting, bending and bonding the sheet metal, a thin and light heat exchanger case can be obtained at low cost.

  Generally, when the width of the heat exchange heat sink 12 is increased or the height of the fin is increased in order to increase the surface area of the fin, the extrusion mold becomes large and expensive. However, in the first embodiment, as can be seen from the shape of the heat exchange heat sink 12 shown in FIG. 3, the heat exchange in the direction perpendicular to the cross section perpendicular to the first partition member 13, the inside air side fins 14, and the outside air side fins 16. Since the length direction of the heat sink 12 and the extrusion direction coincide with each other, it is not necessary to increase the size of the extrusion mold even if the length of the heat exchange heat sink 12 is increased to increase the fin surface area. Thus, when the heat exchange heat sink 12 whose length direction is larger than the width is used, the room air side intake port 7 is provided between the first room air side exhaust port 8 and the second room air side exhaust port 9. The structure has a particularly significant effect on the increase of the inside air flow rate. In the first embodiment, the heat exchange heat sink 12 shown in FIG. 3 can be replaced with the corrugated fin shown in FIG.

  The arrangement of the first and second inside air side exhaust ports 8 and 9 will be described. One or both of the upper and lower first and second inside air side exhaust ports 8 and 9 are connected to the inside air side fan 5 of the heat exchanger case 3. You may provide in the upper surface of the heat exchanger case 3 orthogonal to the side surface like FIG. Alternatively, the first and second inside air-side exhaust ports 8 and 9 may be provided on the lower surface of the heat exchanger case 3, or may be provided on both the side surface, the upper surface, and the lower surface.

  With the arrangement of the first and second room air side exhaust ports 8 and 9, the first partition member 13, the room air side fins 14 and the heat exchanger case 3 constituting the heat exchange heat sink 12 are formed. It is possible to prevent the occurrence of a wind trap in which the air hardly moves at the corner portions 25, 25, and the air smoothly passes between the inside air-side fins 14 to the end portion in the length direction of the heat exchange heat sink 12. As a result, the surface of the inside air-side fin 14 can be effectively used for heat exchange, and high heat exchange capability can be obtained. However, if the first and second inside air side exhaust ports 8 and 9 are provided on the upper surface and the lower surface of the heat exchanger case 3, the air from the first and second inside air side exhaust ports 8 and 9 is cooled. There is a concern that it may be difficult to flow toward the heat-generating component, and a wind direction deflecting plate 27 (see FIG. 6) for changing the wind direction may be installed in the first and second inside air side exhaust ports 8 and 9.

  Similarly, in order to suppress the temperature rise of the heat generating component having a particularly large heat generation amount, the wind direction for selectively directing the air from the exhaust port toward the first and second inside air exhaust ports 8 and 9 in the direction of the component. A deflection plate (not shown) may be installed.

  On the other hand, the air outside the heat generating component storage case 2 passes through the inside of the heat generating component storage case 2 of the outside air inlet 10 provided on the wall surface of the heat generating component storage case 2, The outside air side fan (axial fan) 6 installed facing the front end portion 17 is sucked from the outside air side inlet 10 and passes through the outside air side fan 6 and then flows into the outside air side flow path 20, where the outside air side flow The air flows between the outside air side fins 16 provided in the passage 20 while taking heat from the outside air side fins 16 and is exhausted from the outside air side exhaust port 11. In the first embodiment, the air outside the heat generating component housing 2 that has flowed into the outside air flow path 20 from the outside air inlet 11 through the outside air fan 6 does not pass between the outside air fins 16 and passes through the outside air outlet 16. 11 is provided.

In FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the outside air fan 6 is installed near one end on the lower side in the length direction of the heat exchange heat sink 12, The outside air fan 6 may be installed near one end on the upper side in the length direction of the heat exchange heat sink 12.
Alternatively, as shown in FIG. 7, the outside air side fan 6 may be installed between the outside air outlets 11 and 11 in the same manner as the inside air fan 5. Furthermore, the heat exchange heat sink 12 may be tilted by 90 ° to the side, and the first inside air side exhaust port 8 and the second inside air side exhaust port 9 may be arranged so as to be left and right instead of up and down. Further, for safety, a fan guard may be attached to the outside of the outside air side fan 6, and the outside air side exhaust port 11 may be slit punched to prevent foreign matter from being mixed.

  As described above, the first embodiment uses a single heat exchange heat sink having a long length in the air flow direction and an axial fan that is advantageous for obtaining a high air flow, and from one end of a similar heat exchange heat sink 12. Compared to the conventional structure in which air flows to the other end, the surface area of the inside air side fan 5 is the same and has almost the same heat exchanging capacity, but from the inside air side intake port 7 to the first and second inside air side exhaust ports 8. , 9, the distance flowing between the fins is about ½, and the cross-sectional area of the inside air side passage 19 that flows between the fins is about double, so the pressure due to the air flowing between the inside air side fins The loss is greatly reduced, and according to the PQ characteristics of the inside air side fan, the inside air side exhaust flow rate of the first inside air side exhaust port and the second inside air side exhaust port is greatly improved. , Keep the temperature of the air in the enclosure and the temperature of the heat generating parts low Door is possible.

  In addition, since the pressure loss is reduced as described above, fine pitch fins with high pressure loss can be used, so that the volume of the heat exchange heat sink 12 can be reduced while ensuring the surface area of the inside air-side fin, so that the heat exchanger The whole can be reduced in size, and can be applied to a housing that is increasingly downsized. In addition, since the pressure loss is reduced, the necessary air volume can be obtained even with a relatively small fan, which is advantageous for downsizing the entire heat exchanger.

  Also, the amount of heat released per unit flow of the inside air side air between the inside air side intake port 7 and the first inside air side exhaust port 8, and the inside air between the inside air side intake port 7 and the second inside air side exhaust port 9. The inside air side intake port 7 and the inside air side fan 5 are installed at a position where the heat radiation amount per unit flow rate of the side air is substantially the same, and the exhaust temperature from the first inside air side exhaust port 8 and the second inside air side exhaust gas are exhausted. By making the exhaust temperature from the port 9 substantially equal, only a part of the inside air-side fin is used such that the air with a small amount of heat released from one inside air side exhaust port is recirculated into the housing. It is possible to prevent the heat exchange capacity from being lowered due to the state not being performed, and to obtain the highest heat exchange capacity.

  Further, structurally, the positions of the inside air side intake port 7 and the inside air side fan 5 are changed to increase the opening of the heat exchanger case 3 for the first and second inside air side exhaust ports 8 and 9. Thus, there is no addition of new parts, replacement with expensive parts, an increase in the number of assembling steps, etc., and there are almost no factors that increase the cost, and it can be manufactured at low cost.

  Both the inside air side fan 5 and the outside air side fan 6 are mounted so that the direction of the air flow by the fans is opposite, and the first and second inside air side exhaust ports 8, 9 and the outside air side exhaust port 11 are respectively connected to the inside air side intake port. Of course, a structure in which the inside air side inlet port 7 and the outside air side inlet port 10 are read as the inside air side exhaust port and the outside air side exhaust port, respectively, is conceivable. Even if there is an obstruction (in this structure, the fin becomes an obstruction), the influence is small, but if there is an obstruction on the suction side, the flow rate deviates from the PQ characteristic and falls significantly. Decreasing the flow rate on the inside air side is contrary to the object of the present invention, and it is not desirable that the flow rate on the outside air side be decreased. On the other hand, if the distance between the fan suction side and the obstacle is increased to a distance that does not affect the flow rate, an increase in the size of the heat exchanger is inevitable. Therefore, although it is possible as a structure to make the fan wind direction opposite to that of the present invention, it is not a desirable structure for realizing the object of the present invention.

<Embodiment 2>
FIG. 8 shows a second embodiment of the heat exchanger for cooling in a casing according to the present invention. In the first embodiment, the outside air fan 6 is attached to the inside of the heat generating component housing 2, but in the second embodiment, the outside air fan 6 is attached to the outside of the heat generating components housing 2. As a result, the outside air side fan 6 projects as a protrusion on the outside of the heat generating component housing 2. If there is no restriction on the installation location of the heat generating component housing case 2 aesthetically, the outside of the heat generating component housing case 2 that has flowed into the outside air flow path 20 by the outside air side fan 6 from the outside air inlet port 10. The air guide plate 28 that suppresses air from flowing to the outside air side exhaust port 11 without passing between the outside air side fins 16 is not necessary, so that the number of parts, the parts cost, the assembly cost, etc. can be reduced. Since the space where the air guide plate 28 is installed becomes unnecessary, the size of the heat exchanger 1 for cooling in the casing (in this case, the thickness of the heat exchanger 1 for cooling in the casing (the depth of the heat exchanger) )).

<Embodiment 3>
FIG. 9 shows a third embodiment of the heat exchanger 1 for cooling inside a casing according to the present invention. In the first embodiment, the outside air side fan 6 is installed facing the front end portion 17 of the outside air side fin. However, in the third embodiment, the outside air side fan 6 is located at a position where the heat exchange heat sink 12 is extended in the length direction. Heat generated by the third partition member 24 installed and connected to the first partition member 13 constituting the heat exchange heat sink 12 is sucked into the outside air flow path 20 from the outside air inlet 10 by the outside air side fan 6. The air outside the component housing case 2 flows between the outside air-side fins 16 without being mixed with the air inside the heat-generating component housing case 2 so that the air can be exhausted from the outside air side exhaust port 11. As a result, the vertical length of the heat exchanger 1 for cooling in the casing (height of the heat exchanger) is increased, but the thickness of the heat exchanger 1 for cooling in the casing (depth of the heat exchanger) is outside air. Reduction can be achieved without providing a protrusion to the outside of the heat generating component housing 2 by the side fan 6. Therefore, the present invention can be applied to a small casing having a height but a depth.

<Embodiment 4>
FIG. 10 shows Embodiment 4 of the heat exchanger 1 for cooling inside a casing in the present invention. In the first embodiment, the outside air inlet 10 and the outside air outlet 11 are provided on the wall surface of the heat generating component housing 2, and the outside air fan 6 is also connected to the outside air inlet 10 on the wall surface of the heat generating component housing 2. Although it was attached from the inside of the heat generating component storage housing 2 so as to be connected, in the fourth embodiment, a larger opening than the outside air intake port 10 and the outside air exhaust port 11 is provided on the wall surface of the heat generating component storage housing 2. An outside air inlet 10 and an outside air outlet 11 are provided in a panel 29 that covers the opening from the outside of the casing, and the outside air fan 6 is also connected to the panel 29 with the outside air inlet 10. It is attached from the inside direction of the body 2. Accordingly, by removing the panel 29 from the outside of the heat generating component housing 2, the outside air side fins 16 can be easily exposed and contaminated with dust or cutting fluid sucked from the outside of the heat generating component housing 2. Maintenance such as cleaning of clogged outside air side fins 16 and outside air side fan 6 can be facilitated, and there is no need to open the door of the heat generating component housing 2. Contamination of the inside of the heat generating component housing 2 can also be avoided.

<Embodiment 5>
FIG. 11 shows Embodiment 5 of the heat exchanger for cooling inside a casing in the present invention. In Embodiment 1, the gap between the inside air side fan 5 and the tip 15 of the inside air side fin is only the thickness of a thin sheet metal constituting the case of the heat exchanger 1 for cooling inside the housing, but in Embodiment 5, A first filling member 21 is provided between the tip 15 of the inside air side fin between the inside air side inlet 7 and the first inside air outlet 8 and the inner surface of the case of the case cooling heat exchanger 1. The same thickness as that of the first filling member 21 is provided between the front end portion 15 of the inside air side fin between the intake port 7 and the second inside air side exhaust port 9 and the inner surface of the case of the heat exchanger 1 for cooling in the housing. The second filling member 22 is installed, and a gap is formed between the inner surface of the case of the case internal cooling heat exchanger 1 around the inside air fan 5 and the tip of the inside air fin 14. Thereby, even when the width of the heat exchange heat sink 12 is larger than the diameter of the inside air fan 5, the wind from the inside air fan 5 does not flow between the fins of the heat exchange heat sink 12 protruding from the inside air fan 5. Can be solved, and a small inside air fan 5 can also be used. It is meaningless to make the thickness of the filling plates (first filling member 21 and second filling member 22) unnecessarily thick, and it only hinders the downsizing of the heat exchanger 1 for cooling in the housing. In addition, it is desirable to keep the thickness of the filling plate within a range of several mm to several tens of mm.

<Embodiment 6>
FIG. 12 shows a sixth embodiment of the heat exchanger 1 for cooling inside a casing in the present invention.
In the first embodiment, the end portion in the length direction of the heat exchange heat sink 12 is in contact with the case of the heat exchanger for cooling inside the housing. However, in the sixth embodiment, the first partition member 13 constituting the heat exchange heat sink 12 is used. Are connected to both ends of the first partition member in the length direction, and end portions of the heat exchange heat sink 12 in the length direction. Is separated from the case of the heat exchanger 1 for cooling inside the housing. In addition, the 2nd partition member 23 may be provided in the one end part of the 1st partition member 13 of the heat exchange heat sink 12 by the relationship of a dimension.

  As a result, the first partition member 13, the inside air-side fins 14 that form the heat exchange heat sink 12, and the first corner portion 25 formed by the case of the heat exchanger 1 for cooling inside the housing, and the heat exchange heat sink 12 are configured. It is possible to prevent the occurrence of air pockets that make it difficult for air to move in the second corner portion 26 formed by the first partition wall member 13, the outside air side fins 16, and the case of the heat exchanger 1 for cooling inside the housing. Since the air smoothly passes between the inside air-side fins 14 or between the outside air-side fins 16 to the end of the exchange heat sink 12 in the length direction, the height of the heat exchanger 1 for cooling in the housing is slightly increased. Since the surfaces of the fins 14 or the outside air side fins 16 can be used effectively by heat exchange, a high heat exchange capability can be obtained.

  By removing the fins at both ends of the heat exchange heat sink 12 by cutting, a similar structure can be realized. However, if additional machining is performed on the extruded heat exchange heat sink 12, the cost increases considerably, which is not a desirable method. Speaking only of the inside air side, as shown in FIG. 5 or FIG. 6, when the first and second inside air side exhaust ports 8 and 9 are provided on the upper surface and the lower surface of the case of the heat exchanger 1 for cooling inside the housing, Although the occurrence of the above-described air pocket can be prevented, there remains a problem that the cold air from the first and second inside air side exhaust ports 8 and 9 is not easily directed toward the heat generating component, and the outside air side has the problem of the heat exchanger case 3. There is a problem that the outside air side exhaust port 11 cannot be provided on the upper surface or the lower surface.

  However, since the heat exchanging capacity does not improve much even if the gap between the end portion in the length direction of the heat exchanging heat sink 12 and the inner surface of the case of the heat exchanger 1 for cooling inside the housing is increased more than necessary, the heat exchanging heat sink 12 The distance between the end portion in the length direction and the inner surface of the case of the heat exchanger 1 for cooling inside the housing is preferably several mm to several tens of mm.

  As described above, according to the present invention, the heat exchanger 1 for cooling the inside of the housing can be applied to a small housing having a large amount of heat generated from the internal heat generating components, but has a high heat exchange capacity and a large air volume on the inside air side. Can be realized. Here, the heat exchange capacity is defined as heat exchange capacity (W / K) = (calorific value inside the case−) where ΔT (K) is a difference between the air temperature inside the case and the outside air temperature outside the case. It is used to mean the amount of heat released from the housing surface) / ΔT. The amount of heat released from the housing surface is a function of ΔT, and increases approximately linearly as ΔT increases.

DESCRIPTION OF SYMBOLS 1 Heat exchanger for cooling in a housing | casing 2 (Heat-generating component storage) Housing | casing 3 Heat exchanger case 4 Flange of heat exchanger case 5 Inside air side fan 6 Outside air side fan 7 Inside air side inlet port 8 1st inside air side outlet port 9 2nd inside air side exhaust port 10 Outside air side inlet port 11 Outside air side exhaust port 12 Heat exchange heat sink 13 1st partition member 14 Inside air side fin 15 End part of inside air side fin 16 Outside air side fin 17 End part of outside air side fin 18 Corrugated fin 19 Inside air side channel 20 Outside air side channel 21 First filling member 22 Second filling member 23 Second partition member 24 Third partition member 25 First corner portion 26 Second corner portion 27 Wind direction deflecting plate 28 Air guide plate 29 Panel 30 Inside air side exhaust port 31 Heat pipe 32 Length of heat exchange heat sink 33 Width of heat exchange heat sink

The invention according to claim 1 of the present application is installed on the wall surface of the housing that houses the heat-generating component, and is used to flow out the air in the housing that has flowed in and the inside air inlet for flowing in the air in the housing. A heat exchanger case provided with an inside air side exhaust port, and a first partition member that partitions the inside of the heat exchanger case into an inside air flow path through which air in the housing flows and an outside air flow path through which air outside the housing flows. A heat exchange heat sink provided with an internal air side fin on the surface of the internal air side flow path and an external air side fin on the surface of the external air side flow path, and the air in the housing is sucked from the internal air side intake port, and the internal air side An inside air side fan that exhausts air from the inside air side exhaust port through the inside air side flow path provided with fins, and an outside air side air intake port through which air outside the housing flows into the heat exchange case Intake air, the outside air side fin is provided An outside air fan that exhausts air from the outside air outlet through which the air outside the housing that has flowed in flows out through the outside air flow path, and the heat exchange heat sink is perpendicular to the first partition member and the inside air fin. A first heat exchange heat sink having a length in a direction perpendicular to a cross section, wherein the inside air-side exhaust port is provided with at least one near one end in the length direction of the heat exchange heat sink. An inside air side exhaust port and at least one second inside air side exhaust port provided in the vicinity of the other end in the length direction of the heat exchange heat sink are configured. Provided between the side exhaust port and the second room air side exhaust port, the room air side fan is an axial fan, and is disposed to face the tip of the room air side fin, The inside air fan Disposed in a substantially equal position exhaust temperature from the exhaust temperature and the second inside air-side outlet of the first inside air-side outlet, the by inside air-side fan, the housing of the air, the room air intake It is a heat exchanger for cooling inside a casing, which is exhausted from both the first room air side exhaust port and the second room air side exhaust port through the room air side channel from the mouth.
The invention according to claim 2 is installed on the wall surface of the housing containing the heat-generating component, and the inside air side inlet port for flowing in the air in the housing and the inside air side for discharging the air in the housing that flows in A heat exchanger case provided with an exhaust port; and a first partition member that partitions the inside of the heat exchanger case into an inside air flow path through which air in the housing flows and an outside air flow path through which air outside the housing flows. A heat exchange heat sink in which an inside air side fin is provided on a surface on the inside air side channel side and an outside air side fin is provided on a surface on the outside air side channel side; air inside the housing is sucked from the inside air side inlet; An inside air side fan that exhausts air from the inside air side exhaust port through the inside air side flow path provided, and air outside the housing is sucked from the outside air side air intake port for air outside the housing to flow into the heat exchange case. The outside air fin is provided A cross-section perpendicular to the first partition wall member and the internal air-side fin, comprising an external air-side fan that exhausts from an external air-side exhaust port through which air outside the casing that has flowed in flows out through the air-side flow path; A first heat exchange heat sink having a length in a direction perpendicular to the heat exchange heat sink, and the inside air side exhaust port is provided with at least one first internal air provided near one end in the length direction of the heat exchange heat sink. A side exhaust port and at least one second inside air exhaust port provided in the vicinity of the other end in the length direction of the heat exchange heat sink, and the inside air side intake port is the first inside air side. Provided between the exhaust port and the second room air side exhaust port, the room air side fan is an axial flow fan, and is disposed to face the front end portion of the room air side fin, Between the first inside air outlet A first filling member between a front end portion of the air side fin and the inner surface of the heat exchanger case, a front end portion of the inside air side fin between the inside air side intake port and the second inside air side exhaust port, and the A second filling member is installed between the inner surfaces of the heat exchanger case, and the inside air side causes the air in the housing to pass from the inside air inlet through the inside air flow path by the inside air side fan. The inside-case cooling heat exchanger is exhausted from both the inside air side exhaust port and the second inside air side exhaust port.
The invention according to claim 3 is installed on the wall surface of the housing containing the heat-generating component, and the inside air side inlet for flowing in the air in the housing and the inside air side for discharging the air in the housing that flows in A heat exchanger case provided with an exhaust port; and a first partition member that partitions the inside of the heat exchanger case into an inside air flow path through which air in the housing flows and an outside air flow path through which air outside the housing flows. A heat exchange heat sink in which an inside air side fin is provided on a surface on the inside air side channel side and an outside air side fin is provided on a surface on the outside air side channel side; air inside the housing is sucked from the inside air side inlet; An inside air side fan that exhausts air from the inside air side exhaust port through the inside air side flow path provided, and air outside the housing is sucked from the outside air side air intake port for air outside the housing to flow into the heat exchange case. The outside air fin is provided A cross-section perpendicular to the first partition wall member and the internal air-side fin, comprising an external air-side fan that exhausts from an external air-side exhaust port through which air outside the casing that has flowed in flows out through the air-side flow path; A first heat exchange heat sink having a length in a direction perpendicular to the heat exchange heat sink, and the inside air side exhaust port is provided with at least one first internal air provided near one end in the length direction of the heat exchange heat sink. A side exhaust port and at least one second inside air exhaust port provided in the vicinity of the other end in the length direction of the heat exchange heat sink, and the inside air side intake port is the first inside air side. Provided between the exhaust port and the second room air side exhaust port, the room air side fan is an axial fan, and is disposed to face the front end portion of the room air side fin, The inside air side fan is the first air The inside air side between the inside air inlet and the first inside air outlet is installed at a position where the exhaust temperature from the inside air outlet and the exhaust temperature from the second inside air outlet are substantially equal. The first filling member between the tip of the fin and the inner surface of the heat exchanger case, the heat exchange with the tip of the inside air fin between the inside air inlet and the second inside air outlet A second filling member is disposed between the inner surfaces of the container case, and the inside air side causes the air in the housing to pass from the inside air side intake port through the inside air side flow path and the first inside air. A heat exchanger for cooling inside a casing, wherein the heat is exhausted from both a side exhaust port and the second inside air side exhaust port.

According to a fourth aspect of the present invention, the outer shape of the heat exchanger case is provided for a flange portion for attaching the heat exchanger for cooling in the housing to the housing, and for the inside air inlet and the inside air outlet. The heat exchanger for cooling in a housing according to any one of claims 1 to 3, wherein the heat exchanger is a substantially rectangular parallelepiped except for an opening and is manufactured by processing a sheet metal.
According to a fifth aspect of the present invention, the heat exchange heat sink is a molded product made of aluminum or an aluminum alloy manufactured by extrusion molding from a mold, and the molded product is placed in a predetermined direction in the length direction of the heat exchange heat sink. It is the heat exchanger for cooling in a housing | casing as described in any one of Claims 1-4 by which the cutting process other than cut | disconnecting to length is not given.
According to a sixth aspect of the present invention, there is provided a second partition member in which fins are not formed on a surface having substantially the same width as the first partition member constituting the heat exchange heat sink, and the length of the first partition member. It is connected to at least one end of the direction, and the whole length of the partition member is extended, The heat exchanger for cooling inside a casing according to any one of claims 1 to 5 characterized by things.

Claims (6)

A heat exchanger installed on a wall surface of a housing containing a heat-generating component and provided with an inside air side intake port for flowing in air in the case and an inside air side exhaust port for discharging air flowing in the housing Case and
Inside air side fins on the inside air side channel side surface of the first partition member that partitions the inside of the heat exchanger case into an inside air side channel through which air inside the housing flows and an outside air side channel through which air outside the housing flows. A heat exchange heat sink provided with outside air side fins on the outside air channel side surface;
An inside air side fan that sucks air in the housing from the inside air side intake port, and exhausts the air from the inside air side exhaust port through the inside air side channel provided with the inside air side fin;
Air outside the housing is sucked in from the outside air inlet for allowing the air outside the housing to flow into the heat exchange case, and flows outside the housing through the outside air flow path provided with the outside air fin. An outside air fan that exhausts air from the outside air outlet through which air flows out,
The heat exchange heat sink is a single heat exchange heat sink having a length in a direction perpendicular to a cross section perpendicular to the first partition wall member and the inside air fin, and the inside air exhaust port is the heat exchange heat sink. At least one first air outlet near the one end in the length direction and at least one second near the other end in the length direction of the heat exchange heat sink. Consists of inside air side exhaust port,
The inside air side intake port is provided between the first inside air side exhaust port and the second inside air side exhaust port,
The inside air fan is an axial fan, and is disposed so as to face the front end of the inside air fin,
The inside air fan exhausts air in the housing from both the first inside air outlet and the second inside air outlet from the inside air inlet through the inside air flow path. A heat exchanger for cooling inside a casing.   The inside air inlet and the inside air fan are installed at a position where the exhaust temperature from the first inside air outlet and the exhaust temperature from the second inside air outlet are substantially equal. Item 2. The internal-case cooling heat exchanger according to Item 1.   The outer shape of the heat exchanger case is a substantially rectangular parallelepiped except for a flange portion for attaching the heat exchanger for cooling inside the housing to the housing, and openings for the inside air side intake port and the inside air side exhaust port. The heat exchanger for cooling in a housing according to claim 1, wherein the heat exchanger is manufactured by processing a sheet metal.   The heat exchange heat sink is a molding made of aluminum or an aluminum alloy produced by extrusion molding from a mold, and cutting other than cutting the molding into a predetermined length in the length direction of the heat exchange heat sink The heat exchanger for cooling in a housing according to any one of claims 1 to 3, wherein processing is not performed.   A first filling member, the inside air side inlet port, and the first space between a front end portion of the inside air side fin between the inside air side inlet port and the first inside air side exhaust port and an inner surface of the heat exchanger case. 5. The second filling member is installed between a front end portion of the inside air side fin between two inside air side exhaust ports and an inner surface of the heat exchanger case. 6. The heat exchanger for cooling in a housing | casing of description.   A second partition member having fins not formed on a surface of substantially the same width as the first partition member constituting the heat exchange heat sink is connected to at least one end of the first partition member in the length direction; The heat exchanger for cooling in a housing according to any one of claims 1 to 5, wherein the entire length of the partition member is extended.

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