JP6787604B1 - Cooling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately cool a device equipped with a forced air cooling system cooling mechanism while suppressing an increase in size of the device when the device is housed in a sealed protective housing. Provide a system. SOLUTION: A protective housing in which a device equipped with a forced air cooling system cooling mechanism is housed, and inside the housing, are arranged in the vicinity of an exhaust portion for exhausting heat in the device, from a plurality of fins. The internal heat dissipation part that receives heat from the device and the rod-shaped, protruding from the inside of the protective housing to the outside of the protective housing, and the multiple fins of the internal heat dissipation part are part of the part inside the protective housing. From a heat transport member that is arranged side by side and transports heat from the internal heat dissipation part to the outside of the protective housing, and from a plurality of fins that are arranged side by side in a part of the heat transport member that is outside the protective housing. It is provided with an external heat dissipation unit. [Selection diagram] Fig. 1

Description

The present invention relates to a cooling system.

In a device in which a heating element is arranged inside a housing, a cooling mechanism for cooling the inside of the housing is known. In Patent Document 1, air inside an apparatus (device) is circulated by a micro fan, the heat of the air is received by an air cooling fin, and the heat received by the air cooling fin is sent to a liquid cooling cooling body by a heat pipe. The configuration of the mechanism is disclosed.

Japanese Unexamined Patent Publication No. 2008-060515

When using equipment that is intended for indoor use, such as a rack-mount type general-purpose server, it is necessary to store the equipment inside a further sealed protective housing. Many of the above-mentioned devices intended for indoor use are equipped with a forced air-cooling system cooling mechanism using a fan as in Patent Document 1, but when such a device is stored inside a protective housing. , Cooling by the cooling mechanism mounted on the device may be insufficient. This is because the heat discharged from the device stays inside the sealed protective housing, and the heat staying inside the protective housing heats the device again. In order to sufficiently cool the device, it is necessary to install an additional cooling mechanism in the protective housing. However, installing such an additional cooling mechanism is not preferable because the equipment becomes large.

In view of the above-mentioned problems, it is an object of the present disclosure that when a device equipped with a forced air cooling system cooling mechanism is housed inside a sealed protective housing, the device is suppressed from becoming large in size. The purpose is to provide a cooling system capable of properly cooling.

The cooling system according to the first aspect of the present invention has a protective housing in which a device equipped with a forced air-cooling cooling mechanism is housed, and heat in the device is discharged inside the protective housing. An internal heat radiating portion that is arranged in the vicinity of the exhaust portion and is composed of a plurality of fins and receives heat from the device, and a rod-shaped portion that protrudes from the inside of the protective housing to the outside of the protective housing to form the protective housing. A heat transport member in which the plurality of fins of the internal heat radiating portion are arranged side by side in a part of an internal portion and transports heat from the internal heat radiating portion to the outside of the protective housing, and the heat transport member. It includes an external heat radiating portion composed of a plurality of fins arranged side by side in a part of a portion outside the protective housing.

According to the present invention, when a device equipped with a forced air cooling system cooling mechanism is housed inside a sealed protective housing, the device can be appropriately cooled while suppressing an increase in size of the device. ..

It is a schematic diagram explaining the structure of the cooling system which concerns on Embodiment 1. FIG. It is a perspective view which shows the appearance of the cooling system which concerns on Embodiment 2. FIG. It is an exploded perspective view of the cooling system which concerns on Embodiment 2. FIG. It is sectional drawing which follows the IV-IV line of FIG. It is a schematic diagram which shows the air flow in the protection housing of the cooling system which concerns on Embodiment 2. FIG. It is a schematic diagram which shows the structure of the cooling system which concerns on Comparative Example 1. It is a schematic diagram which shows the structure of the cooling system which concerns on Comparative Example 2. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to clarify the explanation, the following description and drawings have been omitted or simplified as appropriate. In each drawing, the same elements are designated by the same reference numerals, and duplicate description is omitted as necessary. The right-handed XYZ coordinates shown in the figure are for convenience to explain the positional relationship of the components.

[Embodiment 1]
Hereinafter, the first embodiment will be described.
FIG. 1 is a schematic view illustrating the structure of the cooling system 1 according to the first embodiment. As shown in FIG. 1, the cooling system 1 includes a protective housing 8, an internal heat radiating unit 3, a heat transport member 4, and an external heat radiating unit 5.

In the protective housing 8, a device 2 equipped with a forced air cooling system cooling mechanism 2a is housed inside. The internal heat dissipation unit 3 is arranged inside the protective housing 8 in the vicinity of the exhaust unit 2a that discharges heat from the device 2. Further, the internal heat dissipation unit 3 is composed of a plurality of fins 3a and receives heat from the device 2. The heat transport member 4 has a rod shape and protrudes from the inside of the protective housing 8 to the outside of the protective housing 8, and a plurality of fins 3a of the internal heat radiating portion 3 are lined up in a part of a portion inside the protective housing 8. It is arranged and transports the heat from the internal heat dissipation unit 3 to the outside of the protective housing 8. The external heat radiating portion 5 is composed of a plurality of fins 5a arranged side by side in a part of a portion of the heat transport member 4 outside the protective housing 8.

With this configuration, when the device 2 equipped with the forced air cooling system cooling mechanism is housed inside the sealed protective housing 8, the device 2 can be appropriately accommodated while suppressing the equipment from becoming large. Can be cooled to.

[Embodiment 2]

Hereinafter, the second embodiment will be described.
The cooling system according to the second embodiment is suitable for a rack mount type server, a communication device, a power supply, or the like as a device equipped with a forced air cooling system cooling mechanism.
FIG. 2 is a perspective view showing the appearance of the cooling system 101 according to the second embodiment. FIG. 3 is an exploded perspective view of the cooling system 101 according to the second embodiment. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG.

As shown in FIGS. 2 to 4, the cooling system 101 includes a protective housing 108 and a heat exchanger 110.

In the protective housing 108, a device 102 equipped with a forced air cooling system cooling mechanism is housed inside. The device 102 has an exhaust unit 102a for discharging heat in the device 102 and an intake port 102b for taking in air into the device 102 as a cooling mechanism of the forced air cooling system. The exhaust unit 102a is a fan for forcibly exhausting the air in the device 102.

The protective housing 108 is composed of a main body portion 108a, a door portion 108b, and a lid portion 108c. A heat exchanger 110 is attached to the door portion 108b. The door portion 108b and the heat exchanger 110 are fastened with screws, for example. A packing 107 (see FIG. 3) is arranged between the door portion 108b and the heat exchanger 110. As a result, it is possible to prevent foreign substances such as moisture and dust from entering the inside of the protective housing 108, and the waterproofness and weather resistance inside the protective housing 108 are maintained. The material of the door portion 108b is a member that can withstand the tightening force of the screw and the reaction force of the packing 107, for example, a resin containing metal such as stainless steel or aluminum, carbon, or the like to increase the strength. The protective housing 108 may be configured as an integral body.

The heat exchanger 110 includes an internal heat radiating unit 103, a heat transport member 104, and an external heat radiating unit 105. The internal heat radiating unit 103 is arranged in the vicinity of the exhaust unit 102a inside the protective housing 108. Further, the internal heat dissipation unit 103 is composed of a plurality of fins 103a and receives heat discharged from the device 102. Aluminum is generally selected as the material of the fin 103a, but copper may be selected. The fin 103a and the heat transport member 104 are fixed by soldering, caulking, brazing, or the like.

The heat transport member 104 has a rod shape and projects from the inside of the protective housing 108 to the outside of the protective housing 108, and a plurality of fins 103a of the internal heat radiating portion 103 are lined up in a part of a portion inside the protective housing 108. It is arranged and transports the heat from the internal heat dissipation unit 103 to the outside of the protective housing 108. The heat transport member 104 is, for example, a heat pipe. A heat pipe is a general one that transports heat by phase change (evaporation / condensation) of a working liquid enclosed in a small amount in a pipe-shaped container. A general heat pipe has a very high thermal conductivity (5,000 to 30,000 W / mK), does not require external power to operate, has a high thermal responsiveness, and has no moving parts. There is a feature. The heat transport member 104 is not limited to a heat pipe, and may be a copper pipe or the like that circulates a refrigerant inside. The number of heat transport members 104 is optimized according to the amount of heat generated by the device to be cooled and the surrounding environment.

The external heat radiating portion 105 is composed of a plurality of fins 105a arranged side by side in a part of a portion of the heat transport member 104 outside the protective housing 108. Aluminum is generally selected as the material of the fin 105a, but copper may be selected. The fin 105a and the heat transport member 104 are fixed by soldering, caulking, brazing, or the like. A fan 105b that promotes heat dissipation from the external heat dissipation section is arranged in the vicinity of the external heat dissipation section 105.

A through hole through which the heat transport member 104 passes is formed in the outer wall of the protective housing 108. The gap between the heat transport member 104 and the through hole formed in the outer wall of the protective housing 108 is filled with a sealing agent for waterproofing. As a result, it is possible to prevent foreign matter such as moisture and dust from entering from the outside to the inside of the protective housing 108 through the heat transport member 104. Inside the protective housing 108, a duct 106 for guiding the air discharged from the exhaust portion 102a of the device 102 to the internal heat dissipation portion 103 is further arranged.

FIG. 5 is a schematic view showing the flow of air inside the protective housing 108 of the cooling system 101. Here, the air flow inside the protective housing 108 is indicated by an arrow R1. As shown in FIG. 5, the air sucked from the intake port 102b of the device 102 passes through the inside of the device 102 and is discharged from the exhaust unit 102a. Since the internal heat radiating unit 103 is arranged in the vicinity of the exhaust unit 102a that exhausts the heat in the device 102 inside the protective housing 108, the internal heat radiating unit 103 can be used for the high temperature air discharged from the exhaust unit 102a. You can receive heat immediately. Then, as shown by the arrow R2, the heat of the high-temperature air discharged from the exhaust unit 102a is transmitted from the internal heat radiating unit 103 to the external heat radiating unit 105 via the heat transport member 104, and is transmitted from the external heat radiating unit 105 to the protective housing. It is released into the external space of the body 108. Although the duct 106 is not an essential configuration, if the duct 106 is provided, the high-temperature air discharged from the exhaust unit 102a can be more efficiently guided to the internal heat dissipation unit 103.

[Problems with the cooling system in the comparative example]
Next, the problem of the waterproof structure of the cooling system according to the comparative example will be described. FIG. 6 is a schematic view showing the configuration of the cooling system 501 according to Comparative Example 1. As shown in FIG. 6, the cooling system 501 according to Comparative Example 1 includes a protective housing 508 in which the device 102 is housed, and a cooler 520. A ready-made cooler is used as the cooler 520. The device 102 includes a fan as an exhaust unit 102a that discharges heat from the device 102. As a result, the air sucked from the intake port 102b takes heat from the heat generating source inside the device as shown by the arrow R3 and is discharged from the exhaust unit 102a. Since the air discharged from the exhaust portion 102a stays inside the protective housing 508 as shown by arrow R4, heat accumulates inside the protective housing 508, and the temperature inside the protective housing 508 rises. Therefore, the cooler 520 is externally attached to the protective housing 508, and the inside of the protective housing 508 is cooled by the cooler 520 so that the temperature inside the protective housing 508 does not rise. However, the lineup of ready-made coolers as cooler 520 is limited, and if there is no ready-made product with the necessary and sufficient cooling capacity, it is not possible to use a ready-made product with a freezing capacity larger than the necessary and sufficient freezing capacity. Must not be. Therefore, there is a problem that the size of the entire system becomes larger than necessary.

FIG. 7 is a schematic view showing the configuration of the cooling system 601 according to Comparative Example 2. As shown in FIG. 7, the cooling system 601 according to Comparative Example 1 includes a protective housing 608 in which the device 102 is housed, a heat exchanger 610, and an internal circulation fan 630. The device 102 includes a fan as an exhaust unit 102a for exhausting the heat inside the device 102, and the air sucked from the intake port 102b takes heat from the heat generation source inside the device as shown by an arrow R5 and is exhausted. It is discharged from 102a. Since the air discharged from the exhaust unit 102a stays inside the protective housing 608 as shown by the arrow R6, heat accumulates inside the protective housing 608, and the temperature inside the protective housing 608 rises. Therefore, an internal circulation fan 630 is installed inside the protective housing 608, and the heat inside the protective housing 608 is sent to the heat exchanger 610 by the internal circulation fan 630 as shown by arrow R7 to exchange heat. The device 610 discharges the heat to the outside of the protective housing 608. However, in order to arrange the internal circulation fan 630 in the protective housing 608, it is necessary to increase the size of the protective housing 608, and there is also a problem that the size of the entire system becomes large.

In contrast to the configurations of Comparative Examples 1 and 2, in the configuration of the cooling system according to the first and second embodiments, an internal heat radiating portion composed of a plurality of fins inside the protective housing exhausts heat in the device. It is located in the vicinity of. Therefore, the internal heat dissipation unit can immediately receive the heat of the high-temperature air discharged from the exhaust unit without installing an internal circulation fan inside the protective housing. Then, the heat of the high-temperature air discharged from the exhaust unit is transmitted from the internal heat radiating unit to the external heat radiating unit via the heat transport member, and is discharged from the external heat radiating unit to the outside of the protective housing. As described above, in the configuration of the cooling system according to the first and second embodiments, the equipment can be appropriately cooled while suppressing the equipment from becoming large in size.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. Further, the plurality of examples described above can be carried out in combination as appropriate.

1,101 Cooling system 2,102 Equipment 2a, 102a Exhaust part 102b Intake port 3,103 Internal heat dissipation part 4,104 Heat transport member 5,105 External heat dissipation part 3a, 5a, 103a, 105a Fins 8,108 Protective housing

Claims (5)

A protective housing in which equipment equipped with a forced air cooling system cooling mechanism is housed, and
Inside the protective housing, it is composed of a plurality of fins arranged in the vicinity of an exhaust portion for exhausting heat in the device and arranged in parallel with each other so that the main surface faces the exhaust portion. The internal heat dissipation part that receives the heat of
It is rod-shaped and projects from the inside of the protective housing to the outside of the protective housing, and the plurality of fins of the internal heat dissipation portion are arranged side by side in a part of a portion inside the protective housing to dissipate the internal heat. A heat transport member that transports heat from the part to the outside of the protective housing,
A cooling system including an external heat radiating portion including a plurality of fins arranged side by side in a part of a portion of the heat transport member outside the protective housing. The cooling system according to claim 1, wherein the heat transport member is a heat pipe. The cooling system according to claim 1 or 2, wherein a duct for guiding the air discharged from the exhaust portion to the internal heat radiating portion is arranged inside the protective housing. The cooling system according to any one of claims 1 to 3, wherein a fan for promoting heat dissipation from the external heat radiating portion is arranged in the vicinity of the external heat radiating portion. The cooling system according to any one of claims 1 to 4, wherein the device is a rack mount type server.