CN2857218Y - Heat sink with thinner fins - Google Patents

Abstract

The utility model relates to a heat dissipation device with relatively thin fins, comprising a base and a plurality of fins, the base being provided with a plurality of grooves arranged at intervals, the local edges of the fins being bent to form a folded portion, the folded portion being superimposed on the surface of the fins so that the local edges of the fins are formed to be thicker than the fins, the fins being accommodated and fixed in the grooves corresponding to the base with the local edges and the folded portions; thereby, a heat dissipation device can be formed, the fins can be made to have a relatively thin thickness, the density of the fin arrangement can be increased, the heat dissipation efficiency can be effectively improved, and the grooves of the base can be made to have a relatively wide width, so that the grooves can be easily processed and the manufacturing cost can be reduced.

Description

Heat sink with thinner fins

technical field

The utility model relates to a heat dissipation device with thinner fins, in particular to a heat dissipation device which can make the fins thinner, increase the density of the fins, have a larger heat dissipation area, and effectively improve the heat dissipation efficiency , and the width of each groove of the base does not need to be correspondingly narrowed, so that the processing of the groove is easy, and the manufacturing cost of the cooling device is reduced.

Background technique

With the rapid development of the computer industry, the operating speed of heat sources such as chips and central processing units (CPU) is getting faster and faster, and the relative heat generation of heat sources is also getting higher and higher. In order to discharge the high temperature generated by heat sources in Externally, to make the heat source operate normally at the allowable temperature, a large-area radiator is usually attached to the heat-generating surface of the heat source, and multiple fins of the radiator are used to assist in heat dissipation.

As shown in Figure 1, the known radiator 9 mostly includes a flat base 91 and a plurality of fins 92, the base 91 and the fins 92 are made of metal materials with good thermal conductivity such as copper or aluminum. In this way, the base 91 has a plurality of parallel grooves 911, and the fins 92 are all sheet-shaped bodies, and the lower edges of the fins 92 are placed in the grooves 911 of the base 91, and then the clips are used to The fins 92 are fixed on the base 91 by appropriate methods such as pressing and welding, so that the fins 92 are arranged on the base 91 at intervals, and the distance between each fin 92 and the fin 92 is d.

In order to make the heat sink 9 have a larger heat dissipation area, so as to improve the heat dissipation efficiency, generally the fins 92 can be made into a thinner thickness (as shown in Figure 2), so that the distance between each fin 92 and the fins 92 Under the principle of maintaining the same distance d, more fins can be provided, thereby increasing the density of the fins 92, so that the radiator 9 has a larger heat dissipation area, thereby effectively improving the heat dissipation efficiency.

However, the fins 92 are made to be thinner, and the widths of the grooves 911 of the base 91 must be correspondingly narrowed, but the narrower grooves 911 are not easy to process, which will increase the difficulty of manufacturing and increase the manufacturing cost. Increase.

Therefore, it can be seen from the above that the above-mentioned known heat dissipation devices obviously have inconveniences and defects in actual use, and can be improved.

Contents of the invention

The main purpose of this utility model is to provide a heat sink with thinner fins, which can be made into a thinner thickness, so that the density of the fins is increased, so that the heat sink has a larger heat dissipation area, thereby The heat dissipation efficiency is effectively improved; the utility model partially bends the fins to form a reflexed part, so that the local edges of the fins form a thicker thickness, so that each groove of the base can be made into a correspondingly wider width, so that The groove is easy to process, which can reduce the difficulty of making the groove and reduce the manufacturing cost.

In order to achieve the above object, the utility model provides a heat dissipation device with thinner fins, which includes: a base, which is provided with a plurality of grooves arranged at intervals; and a plurality of fins, the local edges of which are bent to form The reflexed portion is superimposed on the surface of the fin, so that the partial edge of the fin is thicker than the fin, and the fin is accommodated and fixed in the corresponding groove of the base by the partial edge and the reflexed portion in the slot.

According to the heat dissipation device with thinner fins of the present invention, the folded portion is arranged at the lower edge of the fins.

According to the heat sink with thinner fins of the present invention, the base is made of copper or aluminum.

According to the heat dissipation device with thinner fins of the present invention, wherein the base includes a central section, and wing sections respectively extending from two corresponding sides of the central section, and the grooves are arranged at equal intervals on the central section and wing sections.

According to the heat dissipation device with thinner fins of the present invention, the fins are made of copper or aluminum.

According to the heat dissipation device with thinner fins of the present invention, the base is softened by heat treatment, and an external force is evenly applied from two corresponding sides of the base, so that each groove is deformed to clamp the partial edge of the fin and Reflex Department.

The heat dissipation device with thinner fins of the present invention increases the density of the fins by making the fins thinner, so that the heat dissipation device has a larger heat dissipation area, thereby effectively improving the heat dissipation efficiency; and by making the fins thinner The part of the fin is bent to form a reflexed part, so that the part of the edge of the fin is thicker, so that each groove of the base can be made into a correspondingly wider width, which makes the groove processing easier and can reduce the cost of groove manufacturing. The degree of difficulty reduces the production cost.

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

Description of drawings

FIG. 1 is a partial cross-sectional view of a conventional heat sink.

FIG. 2 is a partial cross-sectional view of another known heat sink.

Fig. 3 is a three-dimensional exploded view of the heat dissipation device of the present invention.

Fig. 4 is a three-dimensional assembled view of the heat dissipation device of the present invention.

Fig. 5 is a partial sectional view of the heat sink of the present invention.

Wherein, the reference signs are explained as follows:

9 radiator

91 Base 911 Groove

92 fins

1 base

11 central section 12 wing section

13 Groove

2 fins

21 Reflexed part

Detailed ways

Please refer to Fig. 3, Fig. 4 and Fig. 5, the utility model provides a heat dissipation device with thinner fins, the heat dissipation device includes a base 1 and a plurality of fins 2, wherein the base 1 is made of copper or aluminum and other metal materials with good thermal conductivity. In this embodiment, the base 1 includes a central section 11 and wing sections 12 respectively extending from two corresponding sides of the central section 11 . The base 1 is provided with a plurality of grooves 13 arranged at intervals in parallel, and the grooves 13 are equidistantly arranged on the central section 11 and the wing section 12, and the top edge and two ends of each groove 13 are open. shape, which is convenient for assembling the fins 2.

The fin 2 is a sheet-like body, and the fin 2 is made of a metal material with good thermal conductivity such as copper or aluminum, and the fin 2 is made into a thinner thickness, and the fin 2 is partially The edge is bent to form a reflexion portion 21, which is located at the local edge where the fin 2 and the base 1 are joined, that is, the reflexion portion 21 is located at the lower edge of the fin 2, and the reflexion portion 21 Folding is placed on the surface of the fin 2, so that the partial edge of the fin 2 is thicker than the fin 2, and the folded part 21 is superimposed on the surface of the fin 2, so that the thickness of this part is twice the thickness of the fin 2 , the groove 13 of the base 1 can be made to have a correspondingly wider width.

When the utility model is combined, firstly, the base 1 needs to be heat-treated to be completely softened, and the temperature required for the heat treatment operation is between 1000°C and 1100°C, so that the local edges of the fins 2 and the reflexed parts 2

1 can be easily accommodated in the above-mentioned corresponding grooves 13 respectively, and then the external force is evenly applied from the two corresponding sides of the base 1, so that each groove 13 is deformed to clamp the local edge of the fin 2 and fold back Part 21, so that the fins 2 are fixed on the base 1; through the above composition, the heat dissipation device with thinner fins of the present invention can be formed.

The above method of using external force to apply force from two corresponding sides of the base 1 to deform the grooves 13 to clamp the fins 2 so as to fix the fins 2 on the base 1 is only preferred for the present invention. Embodiment, but not limited to this fixing method, the fins 2 can also be fixed on the base 1 by welding or other methods.

The fins 2 of the present utility model can be made into a thinner thickness, so that more numbers can be arranged under the principle of maintaining the same distance d between each fin 2 and the fins 2 (as shown in Figure 5), and then make The density of the fins 2 is increased, so that the heat dissipation device has a larger heat dissipation area, thereby effectively improving the heat dissipation efficiency.

Furthermore, in the present utility model, the fin 2 is partially bent to form a reflexed part 21, and the reflexed part 21 is superimposed on the surface of the lower edge of the fin 2, so that the lower edge of the fin 2 forms a thicker thickness, so that the base 1. The grooves 13 can be made to have a correspondingly wider width, so that the fins 2 can be made into a thinner thickness. The width of each groove 13 of the base 1 does not need to be narrowed correspondingly. The grooves of the base 1 The groove 13 can still be made with a relatively wide width, which makes the groove 13 easy to process, reduces the difficulty of making the groove 13, and reduces the manufacturing cost.

The above is only a preferred feasible embodiment of the utility model, not to limit the patent scope of the utility model, so all equivalent structural changes made by using the specification of the utility model and the contents of the accompanying drawings are the same. All are included in the scope of the present utility model.

Claims (5)

1. A heat sink with thinner fins, characterized in that it comprises: a base having a plurality of spaced grooves; and A plurality of fins, the partial edges of which are bent to form reflexed parts, and the reflexed parts are superimposed on the surface of the fins, so that the local edges of the fins form a thickness thicker than that of the fins, and the fins are formed by the partial edges and reflexed parts. The part is accommodated and fixed in the corresponding groove of the base. 2. The heat sink with thinner fins as claimed in claim 1, wherein the folded portion is located at the lower edge of the fins. 3. The heat sink with thinner fins as claimed in claim 1, wherein the base is made of copper or aluminum. 4. The heat sink with thinner fins as claimed in claim 1, wherein the base comprises a central section, and wing sections respectively extending from two corresponding sides of the central section, and the grooves are equidistantly spaced are arranged on the central section and wing sections. 5. The heat sink with thinner fins as claimed in claim 1, wherein said fins are made of copper or aluminum.

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