CN201397688Y - cooling fins - Google Patents

Abstract

A heat dissipation fin includes: the fin body is in a sheet shape, both sides of the fin body are respectively provided with a high-temperature area, and the middle of the fin body is provided with an airflow area for airflow to pass through; the fin body is provided with at least one guide wall at the position of the airflow area, the guide wall has a preset height, the guide wall is provided with a front end facing the front of the fin body, and two inclined guide parts which extend backwards from the front end to two sides by preset length. Therefore, the air flow entering from the outside can be guided to the position with high temperature on the radiating fin, and further a better radiating effect is achieved.

Description

cooling fins

technical field

The utility model relates to a heat dissipation device, in particular to a heat dissipation fin with better heat dissipation effect.

Background technique

The existing stacked heat sink is formed by stacking a plurality of heat dissipation fins, and more than one heat pipe passes through the heat dissipation fins. In addition, each heat dissipation fin is a flat plate There is no other flow channel design, and a fan is set on one side of the heat dissipation fins, and the fan is used to make the air flow pass between the heat dissipation fins, so as to take away the heat on the heat dissipation fins to achieve heat dissipation Effect.

When the above-mentioned heat sink is in use, the temperature distribution on the surface of each heat dissipation fin is actually not uniform, and the temperature is higher near the heat dissipation pipe, and the temperature is lower the farther away from the heat dissipation pipe. However, the heat dissipation fins without other flow channel designs mentioned above cannot effectively guide the airflow to places with higher temperatures when the airflow passes through the gaps between the heatsink fins, but directly pass through, and its heat dissipation efficiency is improved upwards. Space.

The U.S. Publication No. US 2008/0017350 patent discloses a heat sink with several protrusions arranged on each fin and stacked on top of each other, which can cause a turbulence effect on the airflow entering between the fins, thereby Improve cooling efficiency. However, this method is only for turbulence, rather than directing the airflow to the high temperature position on the cooling fins.

Contents of the invention

The main purpose of the present utility model is to provide a heat dissipation fin, which can guide the airflow to the high temperature position on the heat dissipation fin when the airflow enters, so as to achieve a better heat dissipation effect.

In order to achieve the aforementioned purpose, a heat dissipation fin provided by the present utility model includes: a fin body, which is in the shape of a sheet, has a high temperature area on both sides of the fin body, and the fin body is in the There is an airflow area in the middle for airflow to pass through; the fin body has at least one guide wall at the position of the airflow area, the guide wall has a predetermined height, and the guide wall has a front end facing the front of the fin body , and two slanted guides extending from the front end to both sides and backwards with a predetermined length. In this way, the airflow entering from the outside can be guided to the high temperature position on the heat dissipation fins, thereby achieving better heat dissipation effect.

Description of drawings

Fig. 1 is a perspective view of the first preferred embodiment of the heat dissipation fin of the present invention.

Fig. 2 is an implementation state diagram of the first preferred embodiment of the heat dissipation fin of the present invention.

Fig. 3 is an explanatory diagram of the airflow path of the first preferred embodiment of the heat dissipation fin of the present invention.

Fig. 4 is a perspective view of the second preferred embodiment of the heat dissipation fin of the present invention.

Fig. 5 is an implementation state view of the second preferred embodiment of the heat dissipation fin of the present invention.

Fig. 6 is an explanatory diagram of the air flow path of the second preferred embodiment of the heat dissipation fin of the present invention.

Fig. 7 is a top view of the third preferred embodiment of the heat dissipation fin of the present invention, showing the airflow path at the same time.

Fig. 8 is a top view of the fourth preferred embodiment of the heat dissipation fin of the present invention, showing the airflow path at the same time.

Fig. 9 is an implementation state view of the fifth preferred embodiment of the heat dissipation fin of the present invention.

Detailed ways

In order to describe the structure and characteristics of the present utility model in detail, the following four preferred embodiments are given below and described in conjunction with the drawings as follows, wherein:

As shown in Figure 1, a heat dissipation fin 10 provided by the first preferred embodiment of the present invention mainly has:

A fin body 11 is sheet-shaped, and has a high-temperature area 12 on both sides of the fin body 11, and each of the high-temperature areas 12 is provided with several perforations 121, and each of the perforations 121 is used for a heat pipe 91 to pass through The fin body 11 has an airflow region 18 in the middle for airflow to pass through, and the fin body 11 extends vertically outwards with a peripheral wall 13 at a predetermined height along the periphery of each of the through holes 121 .

The fin body 11 has a guide wall 14 at the position of the airflow area 18, the guide wall 14 has a predetermined height, and the guide wall 14 has a front end 141 facing the front of the fin body 11, the guide wall 14 has a front end 141 facing the front of the fin body 11, the guide wall 14 The wall 14 also has two slanted guides 142 extending from the front end 141 to both sides and backwards with a predetermined length. The perforations 121 are separated by a predetermined distance. And the guiding wall 14 has a notch 143 at its front end 141 .

The usage status of the first embodiment of the utility model is described below:

As shown in Figure 2, when the utility model (i.e. heat dissipation fins 10) is in use, multiple heat dissipation fins 10 are stacked on top of each other, and several heat dissipation pipes 91 are passed through the perforations 121, and pasted Connected to these surrounding walls 13. The heat pipes 91 are actually used to transfer heat energy from a heating element (not shown in the figure).

In actual use, due to the high temperature uniformity of the heat dissipation pipes 91, the heat dissipation pipes 91 can quickly conduct the heat energy emitted by the heating element to the heat dissipation fins 10, so the heat dissipation fins 10 The position with the highest temperature is near the position where the fin body 11 is in contact with the heat pipe 91 (ie, within the high temperature regions 12 ). As shown in Figure 3, the path and flow direction of the airflow are indicated by arc-shaped arrows. When the airflow is blown in from the front of the fin body 11, most of the airflow will be separated by the front end 141 of the guide wall 14. , and move obliquely to both sides and backward along the inclined guides 142 , and then move to the vicinity of the through holes 121 (ie near the heat pipe 91 ), and then flow out. In other words, the incoming airflow will be guided to the higher temperature position on the heat dissipation fins 10 to achieve better heat dissipation effect. In addition, there is still a small part of the airflow that passes through the gap 143 and flows backward.

Please refer to Fig. 4 to Fig. 6 again, the heat dissipation fin 20 provided by the second preferred embodiment of the present invention is basically the same as the first embodiment disclosed above, the difference lies in:

The fin body 21 has a protruding part 26 in the center of the airflow part 28 (in this embodiment, the protruding part 26 is convex downward), the guide wall 24 is formed in front of the protruding part 26, the protruding The starting portion 26 is enclosed by the guide wall 24 at the ends of the two slanted guide portions 242 extending backward and facing each other and combined, and is in the shape of a drop.

The usage method of the second embodiment is also similar to that of the first embodiment disclosed above, and will not be repeated here. In terms of effect, because the airflows guided to both sides meet again when they reach the rear of the guide wall 24, the overall airflow effect can be better, which has the further effect of reducing noise, and also helps to allow the airflow to be discharged from the rear.

Please refer to Fig. 7 again, a heat dissipation fin 30 provided by the third preferred embodiment of the present invention is basically the same as that of the first embodiment disclosed above, the difference lies in:

The fin body 31 has several guide walls 34 in the airflow area 38, the guide walls 34 are arranged front and back, each guide wall 34 has a notch 343 at the front end, and the guide wall 34 located at the front The notch 343 is larger than the notch 343 of the rear guiding wall 34 . And the fin body 31 is provided with at least one rear through hole 321 at the rear position, and the rear through hole 321 is located behind the notch 343 of the rearmost guide wall.

The use status of the third embodiment is roughly the same as that of the first embodiment disclosed above, the difference is that when the incoming airflow encounters the frontmost guide wall 34, part of the airflow will be received by the inclined guide part 342. Guide to move obliquely to both sides and backward, and part of the air flow will pass through the notch 343 of the frontmost guide wall 34 . Then, it will encounter the guide wall 34 at the rear again, and the same part of the airflow will be guided by the inclined guide part 342 to move obliquely, and the same part of the airflow will be guided from the guide wall at the rear. The notch 343 of the wall 34 passes through, and blows toward the vicinity of the rear through hole 321 (ie, the vicinity of the heat pipe). The larger design of the front notch 343 than the rear notch 343 allows more front air to be blown to the rear, which contributes to the heat dissipation effect of the rear.

It can be seen that, the third embodiment can also guide the airflow to the corresponding higher temperature position, which can have a better heat dissipation effect.

Please refer to Fig. 8 again, the heat dissipation fin 40 provided by the fourth preferred embodiment of the present utility model is mainly the same as the third embodiment disclosed above, the difference is that:

The fin body 41 has a plurality of guide walls 44 in the airflow region 48 , and the guide walls 44 are arranged front and back. Wherein except the guide wall 44 that is positioned at the rearmost does not have a gap, the front ends of each of the other guide walls 44 have a gap 443, and the gap 443 of the guide wall 44 positioned at the front is larger than the gap of the guide wall 44 at the rear. 443.

The use state of this fourth embodiment is roughly the same as that of the third embodiment disclosed above, the difference is that the rearmost guide wall 44 has no gaps, so when the airflow flows to the front of the rearmost guide wall 44, It will be directly guided to flow out obliquely backwards on both sides.

It can be seen from this that the fourth embodiment can also guide the airflow to the corresponding higher temperature position, which can have a better heat dissipation effect.

Please refer to Fig. 9 again, a heat dissipation fin 50 provided by the fifth preferred embodiment of the present utility model is basically the same as the first embodiment disclosed above, the difference lies in:

Two sides of the fin body 51 are mated with a heat conduction plate 57 , and the two heat conduction plates 57 can be used to connect a heating element (not shown in the figure), and can be connected with at least one heat dissipation pipe 91 .

In this way, the heat energy generated by the heating element is transmitted to both sides of the fin body 51 through the two heat conducting plates 57, so that the highest temperature position on the fin body 51 is between the fin body 51 and the fin body 51. Near the position where the two heat conducting plates 57 contact (that is, in the high temperature regions 52 ). Through the guidance of the guide wall 54 on the fin body 51 , the incoming airflow can be guided to the high temperature regions 52 on both sides of the fin body 51 , thereby achieving a better heat dissipation effect.

It can be seen that, the fifth embodiment can also guide the airflow to the corresponding higher temperature position, which can have a better heat dissipation effect.

In summary, the utility model can guide the airflow to the high temperature position on the cooling fins when the airflow enters, so that the airflow can take away more heat energy and achieve a better heat dissipation effect.

Claims (10)

1. a radiating fin is characterized in that, includes:

One fin body in the form of sheets, has a high-temperature area respectively in the both sides of this fin body, but and this fin body have a flow area air feed stream in the centre and pass through;

This fin body has at least one guiding walls in the position of this flow area, and this guiding walls has predetermined altitude, and this guiding walls has front end the place ahead towards this fin body, and by two inclined conductings of this front end to the both sides and the predetermined length that extends back.

2. radiating fin according to claim 1 is characterized in that: this fin body center has a boss, and this guiding walls is formed at this boss the place ahead.

3. radiating fin according to claim 2 is characterized in that: this boss be by this guiding walls the end of this two inclined conducting more backward and extend in opposite directions and in conjunction with surrounded and formed.

4. radiating fin according to claim 1 is characterized in that: the both sides of the edge of the end of this inclined conducting and this fin body preset distance of being separated by respectively.

5. radiating fin according to claim 1 is characterized in that: the front end cording of this guiding walls has a breach.

6. radiating fin according to claim 1, it is characterized in that: this fin body has several guiding walls in this flow area, these guiding walls are arranged before and after being, respectively the front end of this guiding walls has a breach, and the breach of guiding walls that is positioned at the place ahead is greater than the breach of the guiding walls at rear, and this fin body position in the wings is provided with the perforation of at least one back, and this back perforation is positioned at the breach rear of last side's guiding walls.

7. radiating fin according to claim 1, it is characterized in that: this fin body has several guiding walls in this flow area, these guiding walls are that arrange front and back, wherein except the guiding walls that is positioned at rear, remaining respectively the front end of this guiding walls have a breach, and be positioned at than the breach of the guiding walls in the place ahead greater than breach than the guiding walls at rear.

8. radiating fin according to claim 1 is characterized in that: this two high-temperature area is respectively equipped with more than one perforation, and respectively this perforation is used for a heat pipe and passed.

9. radiating fin according to claim 8 is characterized in that: this fin body is along vertically a stretch out perisporium of predetermined altitude of the periphery of this perforation respectively.

10. radiating fin according to claim 1 is characterized in that: the heat-conducting plate that is connected of at least one side in these fin body both sides.

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