CN206294480U - A high-efficiency variable-tooth height aluminum extruded heat sink - Google Patents

Abstract

The utility model discloses a high-efficiency variable-tooth high-aluminum extruded heat sink, which comprises a heat sink shell, the heat sink shell is a hollow bottomless structure, the bottom of the heat sink shell is fixedly installed with a heat sink substrate, and the bottom of the heat sink substrate is A heat-generating chip is arranged at the center of the heat sink substrate, and a first heat-conducting metal tube is provided at the bottom of the heat-dissipating fin substrate. The first heat-conducting metal pipe is filled with a heat-conducting liquid. There are second heat-conducting metal tubes passing through the variable-tooth high-aluminum extruded fins, and the second heat-conducting metal tube is also filled with heat-conducting liquid. There is a gap between them, and the heights of the asymmetric variable-tooth aluminum extruded fins are different. Compared with traditional heat sinks, this heat sink has optimized fin height, which can reduce the cost of heat sink by more than 10%, and correspondingly ensure the heat dissipation effect of heat sink. It has the characteristics of simple and reasonable structural design, and high cost performance.

Description

A high-efficiency variable-tooth height aluminum extruded heat sink

technical field

The utility model relates to the technical field of heat sinks, in particular to a high-efficiency variable-tooth high-aluminum extrusion heat sink.

Background technique

The heat sink is used to help the heating chip of the electronic device to accelerate the heat dissipation, and play a role in reducing the temperature of the chip, so as to achieve the purpose of the normal operation of the chip. However, due to the limitation of the heat transfer performance of the radiator, the quality of the structural design will directly affect the heat dissipation effect. However, in the prior art, even if more costs are spent on the heat sink, the heat dissipation effect is difficult to achieve a sufficient effect.

Utility model content

The purpose of the utility model is to provide a high-efficiency variable-tooth height aluminum extruded heat sink to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a high-efficiency variable-tooth high-aluminum extruded heat sink, including a heat sink shell, the heat sink shell is a hollow structure without a bottom surface, and the bottom of the heat sink shell is fixedly installed with a heat sink. The bottom of the heat sink substrate is provided with a heating chip, the bottom of the heat sink substrate is provided with a first heat-conducting metal tube, the first heat-conducting metal tube is filled with a heat-conducting liquid, and the upper surface of the heat sink substrate is vertically fixed Installed with variable-tooth high-aluminum extruded fins, the second heat-conducting metal tube passes through the variable-tooth high-aluminum extruded fins, and the second heat-conducting metal tube is also filled with heat-conducting liquid. There are several sets of variable-toothed high-aluminum extruded fins, each There are gaps between the variable-tooth high-aluminum extruded fins, and the heights of the asymmetric variable-tooth high-aluminum extruded fins are different. The motor casing is fixedly installed on the variable-tooth high-aluminum extruded fins in the middle, and the inside of the motor casing A motor is installed, and the rotor of the motor is connected to a rotating shaft, on which three cooling fan blades arranged in a ring shape are fixedly installed. The motor casing is fixedly connected to the mounting plate through fixing bolts, and the two ends of the bottom of the mounting plate are fixed to the supporting columns. Connection, the end of the support column is located at the end of the variable tooth height aluminum extruded fin.

Preferably, the number of variable-tooth high-aluminum extrusion fins is an odd number, and the variable-tooth high-aluminum extrusion fin located in the middle is higher than the variable-tooth high-aluminum extrusion fins on both sides, and the variable-tooth high-aluminum extrusion fins on both sides are The extruded fins are arranged axisymmetrically with respect to the variable-tooth-high aluminum extruded fins in the middle, and the heights of the symmetrical variable-tooth-high aluminum extruded fins are flush with each other, and the height of the variable-tooth-high aluminum extruded fins is gradually from the middle to the two sides. side down.

Preferably, the gap between each set of variable-tooth-height aluminum extruded fins is 0.2-0.7 cm.

Preferably, the height difference between the variable tooth height aluminum extruded fins on one side is between 0.02-0.05.

Preferably, a heat dissipation groove is opened on the bottom of the heat sink substrate, the first heat conduction metal tube is located in the heat dissipation groove, the first heat conduction metal tube is in the shape of a hollow cylinder, and the first heat conduction metal tubes are arranged horizontally in a linear structure.

Preferably, the second heat-conducting metal pipe is twisted and bent in a wave shape.

Preferably, spring pins are arranged symmetrically on both sides of the bottom end of the motor housing, and the ends of the spring pins extend into the variable-tooth-height aluminum extruded fins.

Compared with the prior art, the beneficial effect of the utility model is: compared with the traditional heat sink, the height of the heat sink is optimized, the cost of the heat sink can be reduced by more than 10%, and the heat dissipation effect of the heat sink is ensured accordingly. Simple and reasonable, cost-effective and other characteristics.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a side view of the utility model;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a schematic diagram of the internal structure of variable-tooth high-aluminum extruded fins.

In the figure: heat sink shell 1, heat sink base plate 2, first heat-conducting metal tube 3, heating chip 4, variable tooth height aluminum extrusion fin 5, heat dissipation fan blade 6, air outlet 7, support column 8, rotating shaft 9, fixed Bolt 10, motor housing 11, spring pin 12, second heat-conducting metal tube 13, mounting plate 14.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. . Based on the embodiments of the present utility model, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: a high-efficiency variable-tooth high-aluminum extruded heat sink, including a heat sink shell 1, the heat sink shell 1 is a hollow bottomless structure, and the bottom of the heat sink shell 1 The heat sink substrate 2 is fixedly installed, the center of the bottom of the heat sink substrate 2 is provided with a heating chip 4, the bottom of the heat sink substrate 2 is provided with a first heat-conducting metal tube 3, and the bottom of the heat sink substrate 2 is provided with a heat dissipation groove. A heat-conducting metal tube 3 is located in the heat sink, the first heat-conducting metal tube 3 is hollow cylindrical, and the first heat-conducting metal tube 3 is arranged horizontally in a linear structure, the first heat-conducting metal tube 3 is filled with a heat-conducting liquid, and the heat sink substrate 2 Variable-tooth high-aluminum extruded fins 5 are installed vertically and vertically on the upper surface of the upper surface, and a second heat-conducting metal tube 13 penetrates through the variable-tooth high-aluminum extruded fins 5. The second heat-conducting metal tube 13 is spirally bent in a wave shape, and the second heat-conducting The metal tube 13 is also filled with a heat-conducting liquid, and there are several sets of variable-tooth high-aluminum extrusion fins 5. It is higher than the variable-tooth high-aluminum extrusion fins 5 on both sides, and the variable-tooth high-aluminum extrusion fins 5 on both sides are arranged axisymmetrically with respect to the variable-tooth high-aluminum extrusion fins 5 in the middle, and the relatively symmetrical variable-tooth high-aluminum extrusion fins The heights of the fins 5 are flush with each other, and the height of the variable-tooth-height aluminum-extruded fins 5 gradually decreases from the middle to both sides, and the height difference between the variable-tooth-height aluminum-extruded fins 5 on one side is between 0.02-0.05. There is a gap between each group of variable-tooth high-aluminum extrusion fins 5, and the gap between each group of variable-tooth high-aluminum extrusion fins 5 is 0.2-0.7 cm, and the asymmetric variable-tooth high-aluminum extrusion fins 5 The heights between them are different, and the variable-tooth-height aluminum extruded fins 5 located in the middle are fixedly installed with a motor casing 11, and a motor is installed in the motor casing 11, and the rotor of the motor is connected to a rotating shaft 9 for transmission. The ring-shaped heat dissipation fan blade 6, the motor housing 11 is fixedly connected with the mounting plate 14 through the fixing bolt 10, the two ends of the bottom of the mounting plate 14 are fixedly connected with the support column 8, and the end of the support column 8 is located at the variable tooth height aluminum extruded fin The end of sheet 5 and both sides of the bottom of the motor housing 11 are symmetrically provided with spring pins 12, and the ends of spring pins 12 extend into the variable-tooth height aluminum extruded fins 5.

The heat sink includes a heat sink substrate 2 and a plurality of variable-tooth high-aluminum extruded fins 5. When it is performing heat dissipation work, the heating chip 4 is located under the heat sink, that is, below the heat sink substrate 2; the heating chip 4 The heat is first transferred to the heat sink substrate 2 by the first heat-conducting metal tube 3 at high speed, and part of the heat is directly transferred to the variable-tooth high-aluminum extruded fins 5 through the internal conduction of the heat sink, and along the variable-tooth high-aluminum extrusion fins 5 Upward, gradually spread to the surface of the variable-tooth high-aluminum extruded fins 5 in contact with the air for heat exchange, the second heat-conducting metal tube 13 accelerates heat conduction, and through the cooling fan blade 6, accelerates heat exchange hot;

The other part of the heat spreads through the heat sink substrate 2 in the horizontal direction, and conducts heat exchange on the surface of the variable-tooth-height aluminum extruded fin 5 that is far away from the center position. The length of the conduction path on the surface of the aluminum extruded fin 5 is different, especially when the heat conduction has a limit distance, even if the height of the variable tooth height aluminum extruded fin 5 is increased, the heat cannot reach the end of the variable tooth height aluminum extruded fin 5 In this technical solution, the height of the variable-toothed high-aluminum extruded fins 5 farther away from the heating chip 4 is gradually reduced to avoid the waste of variable-toothed high-aluminum extruded fins 5 materials, so as to ensure sufficient At the same time, the heat dissipation effect also reduces the design cost of the heat sink.

Compared with traditional heat sinks, this heat sink has optimized fin height, which can reduce the cost of heat sink by more than 10%, and correspondingly ensure the heat dissipation effect of heat sink. It has the characteristics of simple and reasonable structural design and high cost performance.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (7)

1. A high-efficiency variable-tooth high-aluminum extruded heat sink, including a heat sink shell (1), the heat sink shell (1) is a hollow bottomless structure, and the bottom of the heat sink shell (1) is fixedly installed with a heat sink substrate (2), a heating chip (4) is provided at the center of the bottom of the heat sink substrate (2), and it is characterized in that: the bottom of the heat sink substrate (2) is provided with a first heat-conducting metal tube (3), the first The heat-conducting metal tube (3) is filled with heat-conducting liquid, and the upper surface of the heat sink substrate (2) is vertically fixed with variable-tooth high-aluminum extruded fins (5), and the variable-tooth high-aluminum extruded fins (5) are pierced with The second heat-conducting metal tube (13), the second heat-conducting metal tube (13) is also filled with a heat-conducting liquid, and there are several groups of variable-tooth high-aluminum extruded fins (5), each group of variable-tooth high-aluminum extruded fins (5 ), and the heights of the asymmetric variable-tooth-height aluminum extruded fins (5) are different, and the motor housing (11) is fixedly installed on the variable-tooth-height aluminum extruded fins (5) in the middle, A motor is installed inside the motor casing (11), and the rotor transmission of the motor is connected with a rotating shaft (9). Three ring-shaped cooling fan blades (6) are fixedly installed on the rotating shaft (9). The motor casing (11) is connected by fixing bolts. (10) is fixedly connected with the mounting plate (14), the two ends of the bottom of the mounting plate (14) are fixedly connected with the support column (8), and the end of the support column (8) is located on the variable-tooth height aluminum extruded fin (5 ) at the end. 2. A high-efficiency variable-tooth high-aluminum extrusion heat sink according to claim 1, characterized in that: the number of the variable-tooth high-aluminum extrusion fins (5) is an odd number, and the variable-tooth high-aluminum extrusion fins (5) in the middle The high-aluminum extrusion fins (5) are higher than the variable-tooth high-aluminum extrusion fins (5) on both sides, and the variable-tooth high-aluminum extrusion fins (5) on both sides are about the variable-tooth high-aluminum extrusion fins (5) in the middle Axisymmetrically arranged, the heights of the symmetrical variable-tooth-high aluminum extruded fins (5) are flush with each other, and the height of the variable-tooth-high aluminum extruded fins (5) gradually decreases from the middle to both sides. 3. A high-efficiency variable-tooth-height aluminum-extruded heat sink according to claim 1, characterized in that: the gap between each group of variable-tooth-height aluminum-extruded fins (5) is 0.2-0.7 cm . 4. A high-efficiency variable-tooth-height aluminum-extruded heat sink according to claim 1, characterized in that: the height difference between the variable-tooth-height aluminum-extruded fins (5) on one side is between 0.02-0.05 . 5. A high-efficiency variable-tooth-height aluminum extruded heat sink according to claim 1, characterized in that: the bottom of the heat sink substrate (2) has a heat dissipation groove, and the first heat-conducting metal tube (3) is located In the groove, the first heat-conducting metal tubes (3) are hollow cylindrical, and the first heat-conducting metal tubes (3) are arranged horizontally in a linear structure. 6. A high-efficiency variable-tooth-height aluminum extruded heat sink according to claim 1, characterized in that: the second heat-conducting metal tube (13) is spirally bent in a wave shape. 7. A high-efficiency variable-tooth-height aluminum extruded heat sink according to claim 1, characterized in that: spring pins (12) are symmetrically arranged on both sides of the bottom of the motor housing (11), and the spring pins (12) The end of the tooth extends into the variable-tooth high aluminum extruded fin (5).