CN201859870U - Heat sink with vortex generator - Google Patents

Abstract

A heat sink with vortex generator includes a heat transfer base, a heat pipe, and multiple heat dissipation fins; wherein, each radiating fin is provided with a pair of vortex generators which are arranged at intervals, the vortex generators are positioned at one side of the adjacent heat pipe, each vortex generator is provided with two guide inclined planes which protrude from the surface of the radiating fin, the two guide inclined planes are in a protruding form of gradually narrowing from width, and a through hole which penetrates through the opposite position of the radiating fin is formed at the wide position. Therefore, the chimney effect is caused by the vortex generators corresponding to the upper and lower sides of each radiating fin, and the radiating efficiency can be improved.

Description

Heat sink with vortex generator

technical field

The utility model relates to a heat dissipation device, in particular to a heat dissipation device which can generate a vortex (Vortex) through a vortex generator (Vortex generator) and simultaneously has a chimney effect.

Background technique

In recent years, Vortex generators are often considered as a passive heat transfer enhancement technology, which uses some small protrusions, such as embosses, stamps, punches, etc. The processing method is combined with the main heat exchange surface, such as heat dissipation fins, which can avoid the separation of the boundary layer and reduce the friction force. Its advantage is that in addition to having the thermally enhanced characteristics of the aforementioned general cooling fins, it also has a smaller pressure drop.

However, conventional vortex generators are applied to heat dissipation fins, usually through the generated eddy currents to facilitate sufficient heat exchange between the heat dissipation fins and the air, but the effect is still not satisfactory. The main reason is that the generated vortex can only flow in accordance with the airflow direction provided by the fan. When there is no fan to drive the airflow, or when the airflow is stagnant due to excessive accumulation of heat, the heat exchange effect provided by the previous vortex generator is quite limited and cannot Further effectively improve the cooling efficiency.

Utility model content

The main purpose of the present utility model is to provide a heat sink with a vortex generator, which, in addition to setting a vortex generator (Vortex generator) on each heat sink fin of the heat sink, also passes the upper and lower corresponding of each heat sink fin. The unique vortex generator causes the chimney effect, so that the hot air accumulated between the cooling fins can be discharged by itself to achieve the purpose of heat dissipation.

In order to achieve the above object, the utility model provides a heat dissipation device with a vortex generator, comprising:

a heat transfer base;

a heat pipe connected to the heat transfer base; and

A plurality of cooling fins are sequentially arranged on the heat pipe;

Wherein, a pair of spaced apart vortex generators are provided on the plurality of cooling fins, and the pair of vortex generators are located on the side adjacent to the heat pipe, and each of the vortex generators has two guiding slopes protruding from the surface of the cooling fins. , the two guide slopes are in the shape of a protrusion that gradually narrows from the width, and a through hole is formed on the heat dissipation fin relative to the width.

In the above heat dissipation device with vortex generators, the heat transfer base is a plate-shaped body.

In the above-mentioned heat dissipation device with a vortex generator, each of the heat dissipation fins is provided with corresponding through holes for the heat pipes to pass through.

In the above-mentioned heat dissipation device with vortex generators, a protruding ring wall is formed on the periphery of each of the through holes for the heat pipes to be in close contact with.

In the above-mentioned heat sink with vortex generators, there are multiple heat pipes, and a pair of vortex generators are provided on one side of each heat pipe.

The above-mentioned heat dissipation device with vortex generators, wherein, the two guide slopes of each vortex generator protrude and intersect to form a ridgeline, and the ridgelines of any two adjacent vortex generators move toward the two guides. The lead slopes extend in the direction of the narrow part and intersect.

In the above-mentioned heat dissipation device with a vortex generator, the angle θ formed by the intersection of the two ridgelines is 60°.

In the above-mentioned heat dissipation device with vortex generators, the protrusions on the two guiding slopes of each vortex generator are arc-shaped.

In the above-mentioned heat dissipation device with vortex generators, the through holes of each vortex generator are obliquely upward.

In the above heat dissipation device with vortex generators, each of the heat dissipation fins is further provided with a plurality of auxiliary vortex generators arranged laterally.

In the heat dissipation device with vortex generators mentioned above, the plurality of auxiliary vortex generators are arranged opposite to each other. The efficacy of the utility model lies in that the heat dissipation device with the eddy current generator disclosed in the utility model can cause the chimney effect through the corresponding eddy current generators on the top and bottom of each heat dissipation fin, and can improve the heat dissipation efficiency.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is the three-dimensional appearance diagram of the utility model;

Fig. 2 is the three-dimensional appearance diagram of the cooling fin of the utility model;

Fig. 3 is a plane sectional view of the utility model cooling fin;

Fig. 4 is a top view schematic diagram of the utility model in use;

Fig. 5 is a schematic side view of the utility model in use;

Fig. 6 is an enlarged detailed view of part A of Fig. 5;

Fig. 7 is a three-dimensional appearance view of another embodiment of the heat dissipation fin of the present invention;

Fig. 8 is a three-dimensional appearance view of another embodiment of the heat dissipation fin of the present invention;

Fig. 9 is a partially enlarged view of another embodiment of the heat dissipation fin of the present invention;

Fig. 10 is a three-dimensional appearance view of another embodiment of the heat dissipation fin of the present invention.

Among them, reference signs

Heat transfer base 1

heat pipe 2

Heat sink fins 3

Perforated 30 Circular Wall 31

Vortex generator 32 Guide slope 320

Guide slope 321 Through hole 322

Ridge line L

fan 4

Auxiliary vortex generator 5

Detailed ways

In order to further understand the features and technical content of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the attached drawings are only for reference and illustration, and are not intended to limit the present utility model.

Please refer to Fig. 1, which is a perspective view of the utility model. The utility model provides a heat dissipation device with a vortex generator, comprising a heat transfer base 1, at least one heat pipe 2, and a plurality of heat dissipation fins 3; wherein:

The heat transfer base 1 is made of a material with good thermal conductivity, such as aluminum or copper, and can be in the form of a plate for attaching to electronic heating components such as the CPU of a computer (not shown). The heat pipe 2 is connected with the heat transfer base 1, and the above-mentioned plurality of heat dissipation fins 3 are sequentially passed on it, so as to quickly transfer the heat absorbed by the heat transfer base 1 to the heat dissipation fins. Heat dissipation on sheet 3. Also in detail, each heat dissipation fin 3 is provided with corresponding through holes 30, and the periphery of each through hole 30 forms a protruding ring wall 31, and the heat pipe 2 then passes through the through holes 30 of each heat dissipation fin 3 in order to communicate with each The ring wall 31 is in close contact. However, in the embodiment of the utility model, there are multiple heat pipes 2 .

Please refer to Fig. 2 and shown in Fig. 3, the utility model mainly is to be provided with at least one pair of vortex generator (Vortex generator) 32 that spaced configuration is arranged on each cooling fin 3, and described vortex generator 32 is positioned at adjacent heat pipe 2 One side of the leeward side, that is, a pair of vortex generators 32 are arranged on the leeward side of each heat pipe 2, so that the airflow generated by the outside (such as provided by a fan) passes through the windward side of the heat pipe 2. The air flow will change when passing between the two vortex generators 32 to generate a spiral vortex (Vortex) to drive the air flow on the leeward side of the heat pipe 2, and then drive away the hot air stored on the leeward side of the heat pipe 2. Each of the vortex generators 32 has two guiding slopes 320, 321 protruding from the surface of the heat dissipation fins 3. The two guiding slopes 320, 321 are in the form of protrusions that gradually narrow from the width, and the narrow points point to the adjacent heat pipes. 2, and form a through hole 322 through the opposite part of the heat dissipation fin 3 at the wide part.

As shown in FIG. 4 , in more detail, the two guide slopes 320, 321 of each vortex generator 32 intersect to form a ridgeline L due to the protrusion, and the ridgeline L of any two adjacent vortex generators 32 faces The directions of the above-mentioned narrow places can intersect after being extended, and the angle θ formed by the intersection is preferably 60°, but it is not limited thereto.

Therefore, the heat dissipation device with the eddy current generator of the present invention can be obtained through the above-mentioned structural composition.

Accordingly, as shown in FIG. 4 , a fan 4 can be further provided on one side of each heat dissipation fin 3 of the heat dissipation device to help each heat dissipation fin 3 to dissipate heat. At this time, after the airflow generated by the fan 4 passes through the side of the windward side of the heat pipe 2, a part of the airflow will flow along the guide slopes 320, 321 on the outside of the second vortex generator 32, and the other part of the airflow will enter the second vortex generator. The 32 rooms accelerate the removal of the hot air accumulated on the leeward side of the heat pipe 2. Simultaneously, as shown in Fig. 5 and Fig. 6, since each eddy current generator 32 has the through-hole 322 that runs through the cooling fin 3, so when each cooling fin 3 is stacked, each through-hole 322 can form a hot air flow to rise. The circulation channel enables the hot air that cannot be driven away by the airflow generated by the fan 4 to be discharged by itself with the natural phenomenon of rising hot airflow, causing the chimney effect to achieve the purpose of heat dissipation.

In addition, as shown in FIG. 7 , it is a three-dimensional appearance view of another embodiment of the heat dissipation fin of the present invention. Wherein, the two guiding slopes 320, 321 of each vortex generator 32 can also protrude in a circular arc shape. Furthermore, as shown in Figures 8 and 9, the through-holes 322 of each vortex generator 32 can also be inclined upwards, so that the hot air can also rise vertically and be discharged along the trend, so that the chimney effect caused by it can reach Also good effect.

Firstly, as shown in FIG. 10 , it is a three-dimensional appearance view of another embodiment of the heat dissipation fin of the present invention. Wherein, a plurality of auxiliary vortex generators 5 arranged laterally may also be provided on each cooling fin 3 , and the auxiliary vortex generators 5 may be arranged in pairs.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (11)

1. A heat sink with a vortex generator, characterized in that it comprises: a heat transfer base; a heat pipe connected to the heat transfer base; and A plurality of cooling fins are sequentially arranged on the heat pipe; Wherein, a pair of spaced apart vortex generators are provided on the plurality of cooling fins, and the pair of vortex generators are located on the side adjacent to the heat pipe, and each of the vortex generators has two guiding slopes protruding from the surface of the cooling fins. , the two guide slopes are in the shape of a protrusion that gradually narrows from the width, and a through hole is formed on the heat dissipation fin relative to the width. 2 . The heat sink with vortex generators according to claim 1 , wherein the heat transfer base is a plate-shaped body. 3 . 3 . The heat dissipation device with a vortex generator according to claim 1 , wherein each of the heat dissipation fins is provided with corresponding through holes for the heat pipes to pass through. 4 . 4 . The heat dissipation device with vortex generators according to claim 3 , wherein a protruding ring wall is formed on the periphery of each of the through holes for the heat pipes to be in close contact with. 5 . 5 . The heat dissipation device with vortex generators according to claim 1 , wherein there are multiple heat pipes, and a pair of the vortex generators are provided on one side of each heat pipe. 6. The heat sink with vortex generator according to claim 1 or 5, characterized in that, the two guide slopes of each vortex generator protrude and intersect to form a ridgeline, and any two adjacent vortex The ridgelines of the generator extend toward the direction where the two guide slopes form a narrow point and intersect. 7 . The heat sink with vortex generators according to claim 6 , wherein the angle θ formed by the intersection of the two ridgelines is 60°. 8 . The heat sink with vortex generators according to claim 1 or 5 , characterized in that, the protrusions on the two guiding slopes of each vortex generator are arc-shaped. 9 . 9 . The heat sink with vortex generators according to claim 1 or 5 , wherein the through holes of the vortex generators are obliquely upward. 10 . 10 . The heat dissipation device with vortex generators according to claim 1 or 5 , characterized in that, each of the heat dissipation fins is further provided with a plurality of auxiliary vortex generators arranged laterally. 11 . 11 . The heat sink with vortex generators according to claim 10 , wherein the plurality of auxiliary vortex generators are arranged opposite to each other. 11 .

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