CN103153022B - Air extraction cooling device - Google Patents

Abstract

An exhaust type heat dissipation device includes a frame, a fan body, a plurality of air inlets and a plurality of exhaust ports. The side of the frame has a accommodating space. The fan body is arranged in the frame and has a first side and a second side. The plurality of air inlets are arranged on the side of the frame corresponding to the accommodating space, and the plurality of exhaust ports are arranged on the frame and located on the first side. A gas enters the accommodating space through the plurality of air inlets, and is discharged to the first side through the plurality of exhaust ports, and then is discharged to the second side through the fan body. The exhaust type heat dissipation device of the present invention can dissipate the heat source thereof without diverting the inhaled gas, and can increase the air intake volume, effectively improving the overall heat dissipation effect.

Description

Air extraction cooling device

technical field

The invention relates to a heat dissipation device, in particular to an air suction type heat dissipation device.

Background technique

Due to the continuous improvement of the efficiency of various electronic devices, the heat energy generated during their operation is also continuously rising. Therefore, the requirements for heat dissipation efficiency of heat dissipation devices in electronic equipment are also continuously improved. However, in the prior art, an air extraction heat dissipation device using a fan is one of the commonly used means. However, if only a single fan is used for heat dissipation, the cooling effect of the fan may be poor due to insufficient air intake.

Therefore, in order to improve heat dissipation efficiency, as shown in FIG. 1A and FIG. 1B , an existing suction type cooling device 1a, 1b utilizes two fan bodies 11 connected in series (as in FIG. 1A ) or in parallel (as in FIG. 1B ). And a power supply device 12a, 12b is used to drive the fan body 11 . The air intake volume can be increased by the two fan bodies 11 to increase the cooling effect of forced convection. However, the use of two fan bodies 11 will not only increase the volume, but also the power supply devices 12a and 12b themselves will generate heat and require cooling. limitations and cost increases.

In addition, as shown in FIG. 2 , another existing air-extraction heat sink 2 has a fan body 21 and a power supply device 22, and an opening is provided on the positive pressure side (exhaust side) of the fan body 21 shell. Hole 211. Therefore, through the opening 211 on the casing of the fan body 21 , the exhaust gas can be forcibly split to dissipate heat from the power supply device and the heat source of the electronic equipment respectively. However, in addition to reducing the heat dissipation effect of the air pumping heat sink 2 on the heat source of the electronic equipment, the gas diversion will also cause problems such as increased noise when the air pumping heat sink 2 is working.

Therefore, how to provide an air extraction heat dissipation device that can improve the heat dissipation effect without causing problems such as increased noise has become one of the important issues.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide an air extraction type heat sink that can improve the heat dissipation effect without causing problems such as increased noise.

To achieve the above purpose, an air extraction heat dissipation device according to the present invention includes a frame body, a fan body, a plurality of air inlets and a plurality of air outlets. The side of the frame body has an accommodating space. The fan body is disposed in the frame and has a first side and a second side. The plurality of air inlets are arranged on the side of the frame body corresponding to the accommodation space, and the plurality of air outlets are arranged on the frame body and located on the first side. Wherein, a gas enters the accommodating space through the plurality of air inlets, is discharged to the first side through the plurality of exhaust ports, and then is discharged to the second side through the fan body.

In one embodiment, a heat source is disposed in the containing space.

In one embodiment, the frame body has a cover plate, and the cover plate is disposed on a side of the frame body and forms an accommodating space. Wherein, the plurality of air inlets may be arranged on the cover plate, and the plurality of air inlets may be in the shape of slits.

In one embodiment, the plurality of air inlets are in the shape of slits.

In one embodiment, the frame body has an extended channel structure, and the extended channel structure is located on the first side. In addition, the plurality of exhaust ports may be disposed on the extended channel structure.

In one embodiment, when the air extraction heat sink is placed horizontally with the second side as the bottom surface, the height of the plurality of air outlets is greater than the height of the fan body.

In one embodiment, the plurality of air inlets are arranged in a manner of increasing size from the first side to the second side.

Based on the above, the accommodating space on the side of the frame of the air pumping heat sink of the present invention is provided with a plurality of air inlets, and the frame is provided with a corresponding first side (for example, the negative pressure side or the air intake side). There are exhaust ports. Therefore, when the fan body is running, the gas will enter the accommodation space through the plurality of air inlets due to convection, thereby dissipating heat from the heat source (such as the circuit board of the power supply device, etc.) disposed in the accommodation space. And due to the operation of the fan body, a pressure difference will be formed between the first side and the second side (for example, the positive pressure side or the exhaust side) to cause forced convection, so that the gas in the accommodating space will flow through the plurality of exhaust ports. It is drawn to the first side and discharged to the second side through the fan body to dissipate heat from other electronic devices.

Thereby, in addition to heat dissipation of the heat source of the present invention, and without splitting the inhaled gas, the air pumping heat sink of the present invention can increase the air intake due to the setting of the air inlet on the side of the frame, so as to effectively Improve the overall cooling effect.

In addition, in the prior art, because the exhaust side is provided with an opening for forced diversion, it will cause problems such as increased noise, but the exhaust port of the present invention is arranged on the first side (intake side), which will not affect the gas flow. Forced diversion is performed so there is no problem of increased noise.

Description of drawings

FIG. 1A and FIG. 1B are schematic diagrams of an existing air extraction heat dissipation device;

FIG. 2 is a schematic diagram of another existing air extraction heat dissipation device;

FIG. 3A is a schematic diagram of a pumping heat dissipation device according to a preferred embodiment of the present invention;

Fig. 3B is a sectional view along the line A-A of the air pumping heat sink of the preferred embodiment of the present invention; and

FIG. 4 to FIG. 7 are schematic diagrams of different variants of the suction heat dissipation device of the present invention.

Wherein, the reference signs are explained as follows:

1a, 1b, 2, 3, 3a, 3b, 4, 5: suction heat sink

11, 21, 32, 42: Fan body

12a, 12b, 22: power supply device

211: opening

31, 31a, 31b, 41, 51: frame

311, 311a, 411: accommodation space

312, 312b, 412: cover plate

321, 421, 521: first side

322, 422, 522: second side

33, 43, 53: air inlet

34, 34b, 44, 54: Exhaust ports

413: Extended runner structure

H: heat source

H1, H2: Height

A-A: Straight line

detailed description

Hereinafter, an air extraction heat sink according to a preferred embodiment of the present invention will be described with reference to related drawings, wherein the same elements will be described with the same reference symbols.

FIG. 3A is a schematic diagram of an air extraction heat sink 3 according to a preferred embodiment of the present invention. The suction heat dissipation device 3 includes a frame body 31 , a fan body 32 , a plurality of air inlets 33 and a plurality of air outlets 34 .

The shape of the frame body 31 is not limited, and a receiving space 311 is formed at a side thereof. A heat source H can be disposed in the accommodating space 311 , wherein the heat source H can be, for example, a circuit board of a power supply device.

The fan body 32 is disposed in the frame body 31 and has a first side 321 and a second side 322 . Wherein, the first side 321 is, for example, a negative pressure side or an intake side, and the second side 322 is, for example, a positive pressure side or an exhaust side.

A plurality of air inlets 33 are disposed on a side of the frame body 31 corresponding to the accommodating space 311 . In this embodiment, the plurality of air inlets 33 are slit-shaped and arranged at the upper and lower positions on both sides of the accommodating space 311 (the other side is not shown) as an example for illustration, but it is not limiting, according to If required, multiple air inlets 33 may only be a plurality of non-slit-shaped openings, or be arranged only on one side of the accommodating space 311, or be arranged on both sides of the accommodating space 311 but only be arranged at the upper or lower positions, etc., but It is still necessary to give priority to increasing the air intake volume and air intake efficiency of the accommodating space 311 .

A plurality of exhaust ports 34 are disposed on the frame body 31 and located on the first side 321 . In this embodiment, two exhaust ports 34 are taken as an example for illustration, but it is not limiting. In addition, FIG. 3B is a cross-sectional view of the air extraction heat sink 3 along the line A-A. As shown in FIG. H2 is greater than the height H1 of the fan body 32 . Thereby, when the gas in the accommodating space 311 is drawn out to the first side 321 through the plurality of exhaust ports 34 , it can be smoothly discharged to the second side 322 through the fan body 32 .

Therefore, when the fan body 32 is running, the gas will enter the accommodating space 311 through the plurality of air inlets 33 due to convection, whereby the heat source H (such as a circuit board of a power supply device, etc.) disposed in the accommodating space 311 can be heated. To dissipate heat. And due to the operation of the fan body 32, the first side 321 and the second side 322 will form a pressure difference to cause forced convection, so that the gas in the accommodating space 311 will be drawn out to the first side 321 through a plurality of exhaust ports 34, Then it is discharged to the second side 322 through the fan body 32 to dissipate heat to other electronic devices.

In this way, the suction type heat sink 3 of this embodiment can dissipate heat from the heat source H without shunting the inhaled gas. Moreover, the air intake 33 on the side of the frame body 31 can increase the amount of air intake. To effectively improve the overall cooling effect. In addition, because the existing technology is provided with the opening for forced diversion on the exhaust side, it will cause problems such as increased noise, but the exhaust port 34 of the present invention is arranged on the first side 321 (intake side), and does not The gas is forced to divert, so there is no problem of increased noise.

FIG. 4 is a schematic diagram of another variation of the air extraction heat sink 3a of the present invention. The difference between the suction type heat sink 3 a and the suction type heat sink 3 is that the frame body 31 a has a cover plate 312 disposed on the side of the frame body 31 a to form an accommodating space 311 a. Wherein, a plurality of air inlets 33 may be disposed on the cover plate 312 , and the plurality of air inlets 33 may also be slit-shaped, which is not limiting.

In addition, the cover plate 312 can be combined with the frame body 31a by snapping, bonding, fastening, fitting, etc. to form the accommodating space 311a. In this embodiment, the cover plate 312 is combined with the frame body 31a to form the accommodating space 311a by means of fastening, but it is not limited thereto. In addition, the inner surface of the cover plate 312 facing the accommodating space 311a may also be provided with a flow guide structure to increase the heat dissipation effect.

Furthermore, FIG. 5 is a schematic diagram of another variation of the air extraction heat sink 3b of the present invention. The cover plate 312b can be designed in different ways, and the plurality of exhaust ports 34b can also be formed by combining the cover plate 312b with the frame body 31b, which is not limiting, and can also have other different designs according to different requirements.

Therefore, as shown in FIG. 4 , a plurality of air inlets 33 may be formed on the cover plate 312 first, and then the cover plate 312 is assembled to the frame body 31 a to form the accommodating space 311 a. Thereby, the manufacturing difficulty of the suction type heat sink 3a can be reduced, so as to reduce the overall cost and improve the manufacturing efficiency.

FIG. 6 is a schematic diagram of another variation of the air extraction heat sink 4 of the present invention. The difference between the air extraction heat sink 4 and the previous embodiments is that the frame body 41 further has an extended flow channel structure 413 located on the first side 421, and the cover plate 412 is arranged on the extended flow channel structure 413 at the side of the frame body 41. To form an accommodating space 411 . In addition, a plurality of exhaust ports 44 can be disposed on the extended channel structure 413 .

In this way, the air extraction heat sink 4 of this embodiment can increase the pressure difference between the first side 421 and the second side 422 of the fan body 42 through the arrangement of the extended flow channel structure 413, so as to further increase the intake air volume, To effectively improve the overall cooling effect.

FIG. 7 is a schematic diagram of another variation of the air extraction heat sink 5 of the present invention. The difference between the suction heat sink 5 and the above-mentioned embodiments is that the plurality of air inlets 53 disposed on the side of the frame body 51 can be arranged in increasing sizes. In this embodiment, from the first side 521 to the second side 522, a plurality of air inlets 53 are arranged in a manner of increasing in size as an example, because generally speaking, the air inlets 53 near the first side are closer to the The exhaust port 54 arranged on the first side is greatly affected by the suction of the exhaust port 54, so the air volume is also relatively large, while the air intake port 53 far away from the first side is far away from the exhaust port 54. , is less affected by the exhaust port 54, so the air volume is also small. This difference in air volume may cause uneven air flow in the accommodation space. In order to make the heat dissipation air flow more evenly distributed, this embodiment uses air The openings are arranged from the first side 521 to the second side 522 in such a way that the size of the air inlets 53 increases gradually, so that the air volume of each air inlet 53 can be more uniform to enhance heat dissipation, but it is not limiting. Therefore, if the space permits, the suction heat dissipation device 5 can also use other different designs of the plurality of air inlets 53 to improve the overall heat dissipation effect.

It should be noted that the plurality of air inlets 53 can also be arranged in different sizes and in an irregular manner, and the priority is to increase the amount of air intake and effectively improve the overall heat dissipation effect.

In summary, the accommodating space on the side of the frame of the air pumping heat sink of the present invention is provided with a plurality of air inlets, and the frame is provided with a corresponding first side (for example, the negative pressure side or the air intake side). There are exhaust ports. Therefore, when the fan body is running, the gas will enter the accommodation space through the plurality of air inlets due to convection, thereby dissipating heat from the heat source (such as the circuit board of the power supply device, etc.) disposed in the accommodation space. And due to the operation of the fan body, a pressure difference will be formed between the first side and the second side (such as the positive pressure side or the exhaust side) to cause forced convection, so that the gas in the accommodating space will be drawn out through multiple exhaust ports to the first side, and exhausted to the second side through the fan body, and then dissipate heat to other electronic devices.

Thereby, in addition to heat dissipation of the heat source of the present invention, and without splitting the inhaled gas, the air pumping heat sink of the present invention can increase the air intake due to the setting of the air inlet on the side of the frame, so as to effectively Improve the overall cooling effect.

In addition, because the existing technology is provided with the opening for forced diversion on the exhaust side, it will cause problems such as increased noise, but the exhaust port of the present invention is arranged on the first side (intake side), and will not affect The gas is forced to divert, so there is no problem of increased noise.

The above descriptions are illustrative only, not restrictive. Any equivalent modifications or changes made without departing from the spirit and scope of the present invention shall be included in the scope of the appended claims.

Claims (10)

1. A pumping type cooling device is characterized in that, comprising: a frame body with an accommodating space on its side, and the frame body has a first end and a second end; A fan body is arranged in the frame body and has a first side and a second side, the first side is the air intake side, the second side is the exhaust side, the first side of the frame body The end portion and the second end portion are respectively located on both sides of the centerline of the fan body; A plurality of air inlets are arranged on the side of the frame corresponding to the accommodating space, arranged along the direction from the first side to the second side of the fan body, and adjacent to the first end Department; and a plurality of exhaust outlets, disposed on the frame and located on the first side, and adjacent to the second end, Wherein, a gas enters the accommodating space through the plurality of air inlets, is discharged to the first side through the plurality of exhaust ports, and then is discharged to the second side through the fan body. 2. The air pumping heat sink as claimed in claim 1, wherein a heat source is disposed in the accommodating space. 3. The air extraction heat sink as claimed in claim 1, wherein the frame body has a cover plate disposed on a side of the frame body to form the accommodating space. 4. The air pumping heat sink as claimed in claim 3, wherein the plurality of air inlets are disposed on the cover plate. 5. The air pumping heat sink according to claim 4, wherein the plurality of air inlets are in the shape of slits. 6. The pumping heat sink as claimed in claim 1, wherein the plurality of air inlets are in the shape of slits. 7. The air pumping heat sink as claimed in claim 1, wherein the frame body further has an extended channel structure, and the extended channel structure is located on the first side. 8. The air pumping heat sink as claimed in claim 7, wherein the plurality of exhaust ports are disposed on the extended channel structure. 9 . The air extraction heat sink as claimed in claim 1 , wherein when the air extraction heat sink is placed horizontally with the second side as the bottom surface, the heights of the plurality of air outlets are greater than the height of the fan body. 10 . 10. The air extraction heat sink as claimed in claim 1, wherein the plurality of air inlets are arranged in a manner of increasing size from the first side to the second side.