CN211601636U

CN211601636U - Heat radiation structure

Info

Publication number: CN211601636U
Application number: CN201922364431.7U
Authority: CN
Inventors: 宫下洋一; 小泉谅治
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-29
Anticipated expiration: 2029-12-25

Abstract

The utility model provides a heat radiation structure for the guide air passes through and dispels the heat. The heat dissipation structure includes a heat dissipation member: the pair of plate-shaped air guide covers are respectively arranged on the top surface and the bottom surface of the heat radiating piece; the two opposite side edges of each air guiding cover are respectively bent and extended in a direction away from the heat radiating piece in an inclined mode to form an air guiding part. The heat dissipation structure can increase the flow speed of air passing through the air guide cover and the flow speed of air passing through the heat dissipation channel of the heat dissipation part by arranging the air guide part on the air guide cover, thereby achieving the purpose of effectively improving the heat dissipation effect.

Description

Heat radiation structure

Technical Field

The utility model relates to a heat radiation structure.

Background

High speed operation or reciprocation of the machine is often accompanied by the generation of large amounts of heat. However, if a large amount of heat is generated, the heat cannot be efficiently dissipated, which may cause mechanical failure and damage to parts. Therefore, in order to maintain the normal operation of the machine, a heat dissipation structure is required.

In the conventional heat dissipation structure, flat air guide covers are arranged on the top surface and the bottom surface of a heat dissipation member, and external air is guided to pass through the heat dissipation member through the air guide covers, so that the heat dissipation effect is achieved.

However, in the design of the air guiding cover, the conventional heat dissipation structure cannot increase the flow rate of the passing air, so that the heat dissipation effect is poor and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heat radiation structure can make the velocity of flow of the air that passes through increase to promote the radiating effect.

The utility model provides a heat radiation structure for guide air passes through and dispels the heat, heat radiation structure includes the radiating piece: the pair of plate-shaped air guide covers are respectively arranged on the top surface and the bottom surface of the heat radiating piece; the two opposite side edges of each air guiding cover are respectively bent and extended in a direction away from the heat radiating piece in an inclined mode to form an air guiding part.

In an embodiment of the present invention, the air guiding portion is bent and extended into a fillet shape.

In an embodiment of the present invention, in each of the air guiding covers, a distance between a terminal of the air guiding portion and the heat dissipating member is greater than a distance between other portions of the air guiding portion and the heat dissipating member.

In an embodiment of the present invention, the heat sink is disposed between the top surface and the bottom surface and has a plurality of heat dissipation channels arranged up and down.

In an embodiment of the present invention, the air guiding cover is adjacent to the closest heat dissipating channel among the plurality of heat dissipating channels.

Based on the above, the utility model discloses a heat radiation structure sets up the wind-guiding lid respectively in the top surface and the bottom surface of radiating piece, and the leading flank and the trailing flank of each wind-guiding lid respectively incline ground towards the crooked extension of the direction of keeping away from the radiating piece and form the wind-guiding portion of fillet shape. When the utility model discloses a heat radiation structure dispels the heat, through covering at the wind-guiding and setting up wind-guiding portion, and can make the velocity of flow of the air through the wind-guiding lid increase to and can make the velocity of flow of the air through the radiating passage of radiating piece increase, thereby reach the purpose that can promote the radiating effect effectively.

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a perspective view of a heat dissipation structure according to the present invention.

Fig. 2a is a schematic perspective cross-sectional view of the heat dissipation structure of fig. 1 along the line a-a.

Fig. 2b is a schematic partial enlargement according to fig. 2 a.

Fig. 2c is a schematic, partially enlarged side view according to fig. 2 a.

Fig. 2D is a schematic, partially enlarged side view of the region D according to fig. 2 a.

Fig. 3 is a schematic view of the wind speed distribution of gas passing through the heat dissipation structure of fig. 1.

Fig. 4 is a schematic view of the wind speed distribution of gas passing through a conventional heat dissipation structure.

Description of reference numerals:

100: heat sink

110: heat dissipation channel

112: heat radiation fin

114: heat conducting channel

116: heat conduction fin

200: wind guide cover

210: air guide part

300: access pipe fitting

400: discharge pipe fitting

d1, d 2: distance between two adjacent plates

Detailed Description

Fig. 1 is a perspective view of a heat dissipation structure according to the present invention. Fig. 2a is a schematic perspective cross-sectional view of the heat dissipation structure of fig. 1 along the line a-a. Fig. 2b is a schematic partial enlargement according to fig. 2 a. Fig. 2c is a schematic, partially enlarged side view according to fig. 2 a. Fig. 2D is a schematic, partially enlarged side view of the region D according to fig. 1. Referring to fig. 1 to 2d, the present invention is a heat dissipation structure for guiding air to pass through for heat dissipation, which can be applied to a heat exchanger. In the present embodiment, the heat dissipation structure at least includes the heat dissipation member 100 and a pair of air guiding covers 200.

In the present embodiment, the heat dissipation member 100 is a rectangular parallelepiped, but the present invention is not limited to the specific shape of the heat dissipation member 100, and it can be adjusted according to the requirement. As shown in fig. 2a, the heat sink 100 is internally provided with a plurality of heat dissipation channels 110. The plurality of heat dissipation channels 110 are disposed between the top surface and the bottom surface of the heat dissipation member 100 in an up-down arrangement. Each of the heat dissipation channels 110 penetrates the front and rear sides of the heat dissipation member 100 to allow external air to pass through the heat dissipation member 100 for heat exchange.

In this embodiment, as shown in fig. 2b, a plurality of heat dissipation fins 112 may be further disposed inside each heat dissipation channel 110. The heat dissipating fins 112 are arranged in parallel at intervals in the front-rear direction to increase the contact area during heat exchange, thereby improving the heat dissipating effect. In addition, in the present embodiment, a plurality of heat conduction channels 114 may be further provided in each heat sink 100 along the longitudinal direction. Furthermore, the plurality of heat conducting channels 114 and the plurality of heat dissipating channels 110 are disposed in a vertically staggered manner. A plurality of heat conductive fins 116 may also be disposed within each heat conductive channel 114. The heat conductive fins 116 are arranged in parallel at intervals along the longitudinal direction to increase the contact area during heat exchange, thereby improving the heat dissipation effect.

Referring to fig. 2a to 2d, a pair of air guiding covers 200 are respectively disposed on the top surface and the bottom surface of the heat sink 100. In the present embodiment, the wind-guiding cover 200 is a long plate, but the present invention is not limited to the specific shape of the wind-guiding cover 200, and the wind-guiding cover can be adjusted according to the shape of the heat sink 100. The front edge and the rear edge of each air guiding cover 200 are bent and extended in a direction away from the heat sink 100 in an inclined manner, respectively, to form an air guiding portion 210. Specifically, each air guide portion 210 is curved and extends in a rounded angle shape. More specifically, the wind guide portion 210 is bent and extended to form an R-angle. Since the front edge and the rear edge of the air guiding cover 200 respectively form the air guiding portion 210, the R angle formed by the air guiding portion 210 can generate a funnel effect (fanneleffect) on the air passing through the air guiding cover 200, so as to increase the flow rate of the air passing through, and improve the heat dissipation effect.

In addition, as shown in fig. 2d, since the air-guiding portion 210 extends in a direction away from the heat sink 100, the end of the air-guiding portion 210 is at a distance d2 with respect to the heat sink 100, the other portion of the air-guiding portion 210 is at a distance d1 with respect to the heat sink 100, and the distance d2 is greater than the distance d 1.

In addition, in order to make the heat sink 100 have better heat dissipation effect at the positions close to the top and bottom surfaces, the air guiding cover 200 is disposed adjacent to the closest heat dissipation channel 110 among the plurality of heat dissipation channels 110. That is, the air-guide cover 200 disposed at the top surface of the heat sink 100 is disposed adjacent to the heat dissipation channel 110 closest to the top surface of the heat sink 100. The air-guide cover 200 disposed at the bottom surface of the heat sink 100 is disposed adjacent to the heat dissipation passage 110 closest to the bottom surface of the heat sink 100. Through the above arrangement, the flow velocity of the heat dissipation channel 110 near the top and bottom surfaces of the heat dissipation member 100 can be greatly increased, so that the upper and lower sides of the heat dissipation member 100 have better heat dissipation effects.

Referring to fig. 1, in the present embodiment, the heat dissipation structure further includes an inlet tube 300 and an outlet tube 400 for sending hot air to be cooled into and out of the heat dissipation member 100. The inlet pipe 300 is installed at one end of the heat sink 100 in the longitudinal direction, and is communicated with the plurality of heat conduction channels 114 of the heat sink 100, so that hot air can be introduced into the heat conduction channels 114 of the heat sink 100. The discharge pipe 400 is attached to the other end of the heat sink 100 in the longitudinal direction, and is communicated with the plurality of heat transfer passages 114 of the heat sink 100, so that the air cooled by the heat sink 100 can be discharged.

When the heat dissipation structure of the present embodiment dissipates heat, hot air enters the heat conduction channel 114 of the heat dissipation member 100 from the inlet pipe 300 and flows toward the outlet pipe 400. The external air is guided by the air guiding cover 200 to pass through the top and bottom surfaces of the heat dissipating member 100 and the plurality of heat dissipating channels 110, thereby cooling the hot air in the heat conducting channel 114.

Since the external air is guided by the air guide cover 200 to pass through the top and bottom surfaces of the heat sink 100 and the heat sink passage 110. In addition, since the wind guide part 210 having a rounded shape is provided at each of the front and rear edges of the wind guide cover 200, when external air passes through the wind guide cover, the flow velocity of the external air is greatly increased, and thus the effect of rapid heat dissipation can be achieved.

Fig. 3 is a schematic view of the wind speed distribution of gas passing through the heat dissipation structure of fig. 1. Fig. 4 is a schematic view of the wind speed distribution of gas passing through a conventional heat dissipation structure. In order to clearly show the wind speed distribution, the detailed structure is omitted in fig. 3 and 4, the wind speed is indicated by arrows, and the more the arrows, the faster the wind speed. Referring to fig. 3 and 4, the following is a description of the wind velocity distribution when the gas passes through the heat dissipation structure of the present invention and the conventional heat dissipation structure.

In the heat dissipating structure of the present invention, since the air guiding part 210 is provided at both the front side edge and the rear side edge of the air guiding cover 200, the average value of the wind speed of the air passing through the outside of the heat dissipating member 100 is 9.45m/s under the condition set at the time of the test under the guidance of the air guiding part 210. In the conventional heat dissipation structure, since the air guiding cover is simply designed in a flat plate shape and the air guiding portion is not provided, the average value of the wind speed of the air passing through the heat dissipation structure is 8.94m/s under the same conditions as those set in the above test. Therefore, the average value of the wind speed of the air outside the heat sink 100 is increased by 5.7% in the heat sink structure of the present invention.

Please refer to fig. 3 and fig. 4, further illustrate the wind velocity distribution when the air passes through the heat dissipation structure of the present invention.

The wind speed distribution of the heat dissipation structure of the present invention, as shown in fig. 3, not only the flow speed of the air passing through the wind guide cover 200 is increased, but also the flow speed of the air inside the plural heat dissipation channels 110 of the ground heat dissipation member 100 is increased. Therefore, the temperature near the air guiding cover 200 is significantly reduced, and the temperature inside the heat dissipating channel 110 is also reduced.

In particular, the flow velocity inside the heat dissipation channel 110 adjacent to the wind scooper 200 is greatly increased, and thus the temperature inside the heat dissipation channel 110 adjacent to the wind scooper 200 is further decreased. Specifically, among the plurality of heat dissipation channels 110 of the heat dissipation member 100, as shown in fig. 3, the flow rate of the heat dissipation channel 110 closest to the top and bottom surfaces of the heat dissipation member 100 is remarkably increased to be equivalent to that of the heat dissipation channel 110 at the middle position. In the conventional heat dissipation structure, as shown in fig. 4, the air guide cover 200a is formed in a flat plate shape, and the flow rate at the upper and lower sides of the plurality of heat dissipation passages 110a of the heat dissipation member 100a is significantly lower than the flow rate at the air guide passage 110a at the middle position. The heat dissipation structure of the present invention has the characteristics that obvious differences can be seen from fig. 3 and fig. 4.

The utility model discloses a heat radiation structure sets up wind-guiding lid 200 respectively at the top surface and the bottom surface of radiating piece 100, and the leading flank and the trailing flank of each wind-guiding lid 200 respectively incline ground towards the crooked extension of the direction of keeping away from radiating piece 100 and form the wind-guiding portion 200 of fillet shape. When the utility model discloses a heat radiation structure dispels the heat, through set up wind-guiding portion 210 on wind-guiding lid 200, and can make the velocity of flow of the air through wind-guiding lid 200 increase to and can make the velocity of flow of the air through heat dissipation channel 110 of radiating piece 100 also increase, thereby reach the purpose that promotes the radiating effect effectively.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the embodiments of the present invention, and the essence of the corresponding technical solutions is not disclosed.

Claims

1. A heat dissipation structure for guiding air therethrough to dissipate heat, the heat dissipation structure comprising:

the heat dissipation piece: and

a pair of plate-shaped air guide covers respectively arranged on the top surface and the bottom surface of the heat radiating piece;

the two opposite side edges of each air guiding cover are respectively bent and extended in a direction away from the heat radiating piece in an inclined mode to form an air guiding part.

2. The heat dissipating structure of claim 1, wherein the air guiding portion is curved to extend in a rounded angle shape.

3. The heat dissipation structure as claimed in claim 1, wherein in each of the air-guiding covers, a distance of a distal end of the air-guiding portion with respect to the heat dissipation member is greater than a distance of the other portion of the air-guiding portion with respect to the heat dissipation member.

4. The heat dissipating structure of claim 1, wherein the heat dissipating member has a plurality of heat dissipating passages arranged in an up-down manner between the top surface and the bottom surface.

5. The heat dissipating structure of claim 4, wherein the air guiding cover is adjacent to the closest heat dissipating channel of the plurality of heat dissipating channels.