KR102606271B1 - Radiation pin for thermoelectic generation and radiation assembly including the same - Google Patents

Abstract

Heat dissipation fins and heat dissipation assemblies for thermoelectric power generation are provided.
Among these, the heat radiation fin for thermoelectric power generation includes a main curve fin including a plurality of main wave parts that are inflected and continuously connected, a sub curve fin including a plurality of sub wave parts that are inflected and continuously connected, a plurality of main curve fins, and a plurality of sub-curve fins. The sub curve fins are provided alternately arranged along a direction perpendicular to the air flow, and the sub curve fins may have a smaller height than the main curve fins.

Description

Heat radiation fin and heat radiation assembly for thermoelectric power generation {RADIATION PIN FOR THERMOELECTIC GENERATION AND RADIATION ASSEMBLY INCLUDING THE SAME}

The present invention relates to a heat dissipation fin and heat dissipation assembly for thermoelectric power generation.

In general, a thermoelectric module is a module that generates power using the Seebeck effect. In order to increase power generation by absorbing more heat from a high heat source, the thermoelectric module uses fins that generate eddy currents or increase the heat transfer area. Performance can be improved.

In particular, the straight fin attached to the thermoelectric module can improve heat exchange performance by increasing the heat transfer area. However, in the case of conventional straight fins, although they increase the heat transfer area, they do not generate turbulence, so the improvement in power generation may be small.

Accordingly, there is a demand for technology for curved fins that can increase the heat transfer area at the same length, induce turbulence, and improve thermoelectric power generation compared to straight fins.

Patent Document: Domestic Patent Publication No. 10-2013-0059784

Embodiments of the present invention seek to provide a heat dissipation fin and a heat dissipation assembly for thermoelectric power generation that can improve the heat dissipation performance of the heat dissipation fin.

According to one aspect of the present invention, a main curve pin including a plurality of main wave parts that are inflected and continuously connected; and a sub-curve pin including a plurality of sub-wave portions that are bent and continuously connected, wherein the main curve pin and the sub-curve pin are provided in plural numbers, and the plurality of main curve pins and the plurality of sub-curve pins are provided with air. Heat dissipation fins for thermoelectric power generation may be provided arranged alternately along a direction perpendicular to the flow, and the sub curve fins may have a smaller height than the main curve fins.

At this time, the height of the sub curve fin may be in the range of 0.4 to 0.6 times the height of the main curve fin.

Additionally, the plurality of main wave units may include: a first main wave unit located at the inlet side of the air; a second main wave unit inflectively connected to the first main wave unit; And it may include a third main wave part that is inflectedly connected to the second main wave part and is located on an outlet side of the air.

Additionally, the second main wave part may be formed to have a smaller curvature than the first main wave part, and the third main wave part may be formed to have a smaller curvature than the second main wave part.

Additionally, the plurality of sub-wave units may include: a first sub-wave unit located at an air inlet side; a second sub-wave unit inflectively connected to the first sub-wave unit; and a third sub-wave unit that is inflectively connected to the second sub-wave unit and is located on an outlet side of the air.

Additionally, the second sub-wave unit may be formed to have a smaller curvature than the first sub-wave unit, and the third sub-wave unit may be formed to have a smaller curvature than the second sub-wave unit.

In addition, the heat dissipation fin for thermoelectric power generation includes a plurality of rib wave parts that are curved and continuously connected, and ribs spaced apart from the main curve fin or the sub curve fin at an interval equal to the spacing distance between the main curve fin and the sub curve fin. It further includes a curve fin, and the rib curve fin may have a smaller height than the sub curve fin.

In addition, the plurality of rib curve fins include a first rib wave portion located on the air inlet side; a second rib wave portion curvedly connected to the first rib wave portion; And it may include a third rib wave portion connected to the second rib wave portion in an inflected manner and located on an outlet side of the air.

Additionally, the second rib wave portion may be formed to have a smaller curvature than the first rib wave portion, and the third rib wave portion may be formed to have a smaller curvature than the second rib wave portion.

According to one aspect of the present invention, a heat dissipation plate through which air enters and exits; A heat dissipation fin for thermoelectric power generation disposed on the upper surface of the heat dissipation plate; And a heat dissipation assembly for thermoelectric power generation may be provided, including a heat dissipation passage formed between the main curve fin and the sub curve fin of the heat dissipation fin for thermoelectric power generation to guide the air flow.

At this time, the pressure on the inlet side of the heat dissipation plate may be higher than the pressure on the outlet side of the heat dissipation plate when the air moves through the heat dissipation flow path.

According to embodiments of the present invention, when air moves between the main curve pin and the sub curve pin, it moves over the sub curve pin with a small height due to the height difference between the main curve pin and the sub curve pin, so the air moves at a small height. It has the advantage of effectively improving heat transfer performance by mixing with the boundary layer developed on the sub-curve fin.

Figure 1 is a perspective view showing a heat dissipation assembly for thermoelectric power generation according to an embodiment of the present invention.
Figure 2 is a plan view showing a heat dissipation assembly for thermoelectric power generation according to an embodiment of the present invention.
Figure 3 is a graph comparing the inlet temperature of the heat dissipation fin (curve fin) for thermoelectric power generation according to an embodiment of the present invention and the inlet temperature of the conventional straight fin.
Figure 4 is an image showing the TEM temperature of a heat radiation fin for thermoelectric power generation according to an embodiment of the present invention.
Figure 5 is an image showing the turbulence kinetic energy of a heat dissipation fin for thermoelectric power generation according to an embodiment of the present invention.
Figure 6 is an image showing air flow in a heat dissipation fin for thermoelectric power generation according to an embodiment of the present invention.
Figure 7 is an image showing the pressure change in a heat radiation fin for thermoelectric power generation according to an embodiment of the present invention.
Figure 8 is a perspective view showing a heat dissipation assembly for thermoelectric power generation according to another embodiment of the present invention.
Figure 9 is a plan view showing a heat dissipation assembly for thermoelectric power generation according to another embodiment of the present invention.

Hereinafter, specific embodiments for implementing the spirit of the present invention will be described in detail with reference to the drawings.

In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, when a component is mentioned as being 'connected', 'supported', 'connected', 'supplied', 'delivered', or 'contacted' with another component, it is directly connected, supported, connected, or connected to that other component. It may be supplied, delivered, or contacted, but it should be understood that other components may exist in the middle.

The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, it should be noted in advance that expressions such as upper, lower, and side in this specification are explained based on the drawings, and may be expressed differently if the direction of the object in question changes. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically shown, and the size of each component does not entirely reflect the actual size.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used only to distinguish one component from another.

As used in the specification, the meaning of "comprising" is to specify a specific characteristic, area, integer, step, operation, element and/or component, and to specify another specific property, area, integer, step, operation, element, component and/or group. It does not exclude the existence or addition of .

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 9.

Figure 1 is a perspective view showing a heat dissipation assembly for thermoelectric power generation according to an embodiment of the present invention, Figure 2 is a plan view showing a heat dissipation assembly for thermoelectric power generation according to an embodiment of the present invention, and Figure 3 is a view showing a heat dissipation assembly for thermoelectric power generation according to an embodiment of the present invention. It is a graph comparing the inlet temperature of the heat radiation fin (curve fin) for thermoelectric power generation according to an embodiment and the inlet temperature of a conventional straight fin, and Figure 4 is a TEM of the heat radiation fin for thermoelectric power generation according to an embodiment of the present invention. Figure 5 is an image showing the temperature, Figure 5 is an image showing the turbulence kinetic energy of a heat dissipation fin for thermoelectric power generation according to an embodiment of the present invention, and Figure 6 is an image showing the heat dissipation fin for thermoelectric power generation according to an embodiment of the present invention. This is an image showing the air flow in, and Figure 7 is an image showing the pressure change in the heat radiation fin for thermoelectric power generation according to an embodiment of the present invention.

As shown in FIGS. 1 to 7, the heat dissipation assembly 1 for thermoelectric power generation according to an embodiment of the present invention includes a heat dissipation fin 10 for thermoelectric power generation, a heat dissipation plate 20, and a heat dissipation passage 30. can do.

Specifically, the heat dissipation fin 10 for thermoelectric power generation may be disposed on the upper surface of the heat dissipation plate 20. The heat dissipation fin 10 for thermoelectric power generation may be formed to extend curvedly toward the inlet 21 side and the outlet 22 side of the heat dissipation plate 20.

This heat dissipation fin 10 for thermoelectric power generation may include a main curve fin 100 and a sub curve fin 200 arranged in parallel on the upper surface of the heat dissipation plate 20. These main curve pins 100 and sub curve pins 200 may be provided in plural numbers alternately arranged to be spaced apart at equal intervals. And the sub curve pin 200 may have a smaller height than the main curve pin 100. As an example, the height of the sub curve fin 200 may satisfy a range of 0.4 to 0.6 times the height of the main curve fin 100. In this embodiment, the sub curve pin 200 may have a height that is 0.5 times smaller than the main curve pin 100. Here, the height may mean the length from the heat dissipation plate 20 to the upper end (length in the direction perpendicular to the heat dissipation plate 20).

The main curve fin 100 may include a plurality of main wave parts 110 that are inflected and continuously connected. The plurality of main wave parts 110 may include a first main wave part 111, a second main wave part 112, and a third main wave part 113.

The first main wave unit 111 may be disposed on the air inlet 21 side. The first main wave portion 111 can be understood as a wave shape in the form of a cycle that is continuously curved in one direction and the other direction.

The second main wave part 112 may be connected to the end of the first main wave part 111 in an inflected manner. The second main wave portion 112 may have a wave shape of one cycle that is continuously curved in one direction and the other direction. The second main wave portion 112 may be formed to have a smaller curvature (larger radius of curvature) than the first main wave portion 111. For example, when the radius of curvature of the second main wave part 112 is 30R, the radius of curvature of the first main wave part 111 may be 20R, which is smaller than the radius of curvature of the second main wave part 112. The above-mentioned curvature refers to the curvature when the heat dissipation fin 10 for thermoelectric power generation is viewed from the top.

The third main wave unit 113 may be disposed on the air outlet 22 side. The third main wave part 113 may be connected to the end of the second main wave part 112 in an inflected manner. The third main wave unit 113 may be continuously connected to the first main wave unit 111 through the second main wave unit 112. The third main wave part 113 may be formed to have a smaller curvature than the second main wave part 112.

Accordingly, when air moves from the first main wave part 111 to the second main wave part 112, the air has a relatively large curvature in a portion (for example, the first main wave part). As it passes through a small part (for example, the second main wave part), the speed may decrease and the pressure may increase. At this time, a flow can be generated from high pressure to low pressure due to the pressure difference between them, and a secondary flow, which is a vortex occurring in the vertical direction of the air flow, can be generated.

In addition, when the air moves from the second main wave part 112 to the third main wave part 113, the air speed decreases as it passes through a part with a relatively small curvature (for example, the third main wave part). Pressure may increase. At this time, secondary flow, which is a vortex occurring in the vertical direction of the air flow, may be generated due to the pressure difference between them.

The sub curve pin 200 may include a plurality of sub wave portions 210 that are inflected and continuously connected. The plurality of sub-wave units 210 may include a first sub-wave unit 211, a second sub-wave unit 212, and a third sub-wave unit 213.

The first sub-wave portion 211 may be disposed on the air inlet 21 side so as to be parallel to the first main wave portion 111 of the main curve fin 100. The first sub-wave unit 211 may have a wave shape of one cycle that is continuously curved in one direction and the other direction. The first sub-wave unit 211 may have a smaller height than the first main wave unit 111.

The second sub-wave unit 212 may be connected to the end of the first sub-wave unit 211 in an inflected manner. The second sub-wave unit 212 may have a wave shape of one cycle that is continuously curved in one direction and the other direction. The second sub-wave unit 212 may be formed to have a smaller curvature than the first sub-wave unit 211. The second sub-wave unit 212 may have a smaller height than the second main wave unit 112.

The third sub-wave unit 213 may be located on the air outlet 22 side. The third sub-wave unit 213 may be connected to the end of the second sub-wave unit 212 in an inflected manner. The third sub-wave unit 213 may be continuously connected to the first sub-wave unit 211 through the second sub-wave unit 212. The third sub-wave unit 213 may be formed to have a smaller curvature than the second sub-wave unit 212. And the third sub-wave unit 213 may have a smaller height than the third main wave unit 113.

Accordingly, when air moves from the first sub-wave unit 211 to the second sub-wave unit 212, the air is moved to a part with a relatively large curvature (for example, the first sub-wave part 212). The pressure may increase as the speed decreases as it passes through a part with a relatively small curvature (eg, the second sub-wave part) in the sub-wave part.

In addition, when air moves from the second sub-wave unit 212 to the third sub-wave unit 213, the air speed decreases as it passes through a part with a relatively small curvature (for example, the third sub-wave unit). Pressure may increase. At this time, secondary flow, which is a vortex occurring in the vertical direction of the air flow, may be generated due to the pressure difference between them. And as the air moves over the low-height sub-curve fin (200) due to the height difference between the main curve fin (100) and the sub-curve fin (200), it mixes with the boundary layer developed on the low-height sub-curve fin (200) and transfers heat. Performance can be improved.

The heat dissipation plate 20 may be provided in the form of a conductive plate with high conductivity to dissipate heat from the air. The air flowing in from the inlet 21 side of the heat dissipation plate 20 may be discharged toward the outlet 22 of the heat dissipation plate 20 while being guided by the heat dissipation fin 10 for thermoelectric power generation.

On the upper surface of the heat dissipation plate 20, a plurality of main curve fins 100 and sub curve fins 200 extending curvedly toward the inlet 21 side and the outlet 22 side may be alternately arranged.

At this time, the curvature of the main curve fin 100 and the sub curve fin 200 disposed on the outlet 22 side of the heat dissipation plate 20 is the main curve fin disposed on the inlet 21 side of the heat dissipation plate 20. Since it has a smaller curvature than the curvature of (100) and the sub-curve fin 200, the pressure on the inlet 21 side of the heat dissipation plate 20 is the pressure of the heat dissipation plate 20 when air moves through the heat dissipation passage 30. It may be higher than the pressure on the outlet 22 side. Accordingly, a flow can be generated from high pressure to low pressure due to the pressure difference between them, and a secondary flow, which is a vortex occurring in the vertical direction of the air flow, can be generated.

The heat dissipation passage 30 may be understood as a space between the main curve fin 100 and the sub curve fin 200. The heat dissipation passage 30 includes a first passage 31 provided between the side of the main curve fin 100 and one side of the sub curve fin 200, and the side of the main curve fin 100 and the sub curve fin 200. ) may include a second flow path 32 provided between the other surface sides.

Figure 8 is a perspective view showing a heat dissipation assembly for thermoelectric power generation according to another embodiment of the present invention, and Figure 9 is a plan view showing a heat dissipation assembly for thermoelectric power generation according to another embodiment of the present invention.

As shown in Figures 8 and 9, the heat dissipation fin 10 for thermoelectric power generation according to another embodiment of the present invention includes a main curve fin 100, a sub curve fin 200, and a rib curve fin 300. can do.

In describing another embodiment of the present invention, compared to the above-described embodiment, there is a difference in that the heat dissipation fin 10 for thermoelectric power generation further includes a rib curve fin 300, so the following will mainly focus on the differences. description, and the same descriptions and reference numerals are used.

The rib curve pin 300 may be spaced apart from the main curve pin 100 or the sub curve pin 200 at an interval equal to the distance between the main curve pin 100 and the sub curve pin 200. This rib curve pin 300 may have a smaller height than the sub curve pin 200.

The rib curve fin 300 may include a plurality of rib wave portions 310 that are curved and continuously connected. The plurality of rib curve fins 300 may include a first rib wave portion 311, a second rib wave portion 312, and a third rib wave portion 313.

The first rib wave portion 311 may be disposed between the first main wave portion 111 of the main curve pin 100 and the first sub wave portion 211 of the sub curve pin 200. The first rib wave unit 311 may be disposed on the air inlet 21 side to be parallel to the first main wave unit 111 and the first sub-wave unit 211. The first rib wave portion 311 may have a one-cycle wave shape that is continuously curved in one direction and the other direction. The first rib wave part 311 may have a smaller height than the first sub wave part 211.

The second rib wave portion 312 may be disposed between the second main wave portion 112 of the main curve pin 100 and the second sub wave portion 212 of the sub curve pin 200. The second rib wave portion 312 may be connected to the end of the first rib wave portion 311 in an inflected manner. The second rib wave portion 312 may have a one-cycle wave shape that is continuously curved in one direction and the other direction. The second rib wave portion 312 may be formed to have a smaller curvature than the first rib wave portion 311. The second rib wave portion 312 may have a smaller height than the second sub-wave portion 212.

The third rib wave portion 313 may be disposed between the third main wave portion 113 of the main curve pin 100 and the third sub wave portion 213 of the sub curve pin 200. The third rib wave portion 313 may be located on the air outlet 22 side. The third rib wave portion 313 may be connected to the end of the second rib wave portion 312 in an inflected manner. The third rib wave portion 313 may be continuously connected to the first rib wave portion 311 through the second rib wave portion 312. The third rib wave portion 313 may be formed to have a greater curvature than the second rib wave portion 312. For example, the third rib wave portion 313 may have the same curvature as the first rib wave portion 311. And the third rib wave part 313 may have a smaller height than the third sub wave part 213.

Accordingly, when the air moves from the first rib wave portion 311 to the second rib wave portion 312, the air has a relatively large curvature in a portion (for example, the first rib wave portion). As it passes through a small part (for example, the second rib wave part), the speed may decrease and the pressure may increase.

In addition, when the air moves from the second rib wave portion 312 to the third rib wave portion 313, the air speed increases as it passes through a portion with a relatively large curvature (for example, the third rib wave portion). Pressure may be reduced. At this time, secondary flow, which is a vortex occurring in the vertical direction of the air flow, may be generated due to the pressure difference between them. And as the air moves over the low-height sub-curve fin 200 due to the height difference between the sub-curve fin 200 and the rib curve fin 300, it mixes with the boundary layer developed on the low-height rib curve fin 300 to transfer heat. Performance can be improved

Meanwhile, the heat dissipation passage 30 according to another embodiment of the present invention includes a first passage 31 provided between the side of the main curve fin 100 and one surface side of the sub curve fin 200, and a sub curve fin 200. A second flow path 32 provided between the other surface side of (200) and one surface side of the rib curve pin 300, and a second flow path 32 provided between the other surface side of the rib curve pin 300 and the side surface of the main curve pin 100. It may include a third flow path 33.

As described above, in the present invention, when air moves between the main curve pin and the sub curve pin, it moves over the low height sub curve pin due to the height difference between the main curve pin and the sub curve pin, so the air moves over the low height sub curve pin. It has excellent advantages such as being able to effectively improve heat transfer performance by mixing with the boundary layer developed on the curve fin.

Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features. You will be able to understand it. For example, a person skilled in the art may change the material, size, etc. of each component depending on the field of application, or combine or substitute embodiments to implement the present invention in a form not clearly disclosed in the embodiments of the present invention, but this is also the present invention. It does not go beyond the scope of. Therefore, the embodiments described above are illustrative in all respects and should not be understood as limiting, and such modified embodiments should be considered to be included in the technical idea described in the claims of the present invention.

1:Heat dissipation assembly for thermoelectric power generation
10: Heat radiation fin for thermoelectric power generation
100: main curve pin 110: main wave part
111: first main wave part 112: second main wave part
113: Third main wave section
200: Sub curve pin 210: Sub wave part
211: first sub-wave unit 212: second sub-wave unit
213: Third sub-wave section
300: Rib curve pin 310: Rib wave part
311: 1st rib wave part 312: 12th rib wave part
313: Third rib wave part
20: Heat dissipation plate
30: Heat dissipation oil path 31: First flow path
32: Second Euro 33: Third Euro

Claims (11)

a main curve pin including a plurality of main wave parts that are inflected and continuously connected; and
It includes a sub-curve pin including a plurality of sub-wave parts that are inflected and continuously connected,
The main curve pin and the sub curve pin are provided in plural numbers,
A plurality of the main curve fins and a plurality of sub curve fins are provided alternately arranged on a heat dissipation plate along a direction perpendicular to the air flow,
The sub curve pin is
Having a smaller height than the main curve fin,
The curvature of the main curve fin and the sub curve fin disposed on the outlet side of the heat dissipation plate is,
A heat dissipation fin for thermoelectric power generation having a curvature smaller than the curvature of the main curve fin and the sub curve fin disposed on the inlet side of the heat dissipation plate. According to claim 1,
The height of the sub curve pin is
A heat dissipation fin for thermoelectric power generation ranging from 0.4 to 0.6 times the height of the main curve fin. According to claim 1,
The plurality of main wave units
a first main wave unit located on the air inlet side;
a second main wave unit inflectively connected to the first main wave unit; and
A heat dissipation fin for thermoelectric power generation, including a third main wave part curvedly connected to the second main wave part and located on an outlet side of the air. According to claim 3,
The second main wave unit
It is formed to be curved with a smaller curvature than the first main wave portion,
The third main wave unit
A heat dissipation fin for thermoelectric power generation that is curved with a smaller curvature than the second main wave portion. According to claim 1,
The plurality of sub-wave units
a first sub-wave unit located on the air inlet side;
a second sub-wave unit inflectively connected to the first sub-wave unit; and
A heat dissipation fin for thermoelectric power generation, including a third sub-wave part that is curvedly connected to the second sub-wave part and is located on an outlet side of the air. According to claim 5,
The second sub-wave unit
It is formed to be curved with a smaller curvature than the first sub-wave portion,
The third sub-wave unit
A heat dissipation fin for thermoelectric power generation that is curved with a smaller curvature than the second sub-wave portion. According to claim 1,
It includes a plurality of rib wave portions that are inflected and continuously connected, and further includes rib curve pins spaced apart from the main curve pin or the sub curve pin at an interval equal to the separation distance between the main curve pin and the sub curve pin,
The rib curve pin is
A heat dissipation fin for thermoelectric power generation having a smaller height than the sub-curve fin. According to claim 7,
The plurality of rib curve pins are
A first rib wave portion located on the air inlet side;
a second rib wave portion curvedly connected to the first rib wave portion; and
A heat dissipation fin for thermoelectric power generation, including a third rib wave portion curvedly connected to the second rib wave portion and located on an outlet side of the air. According to claim 8,
The second rib wave part is
It is formed to be curved with a smaller curvature than the first rib wave portion,
The third rib wave part is
A heat dissipation fin for thermoelectric power generation that is formed to be curved with a smaller curvature than the second rib wave portion. A heat dissipation plate through which air enters and exits;
A heat dissipation fin for thermoelectric power generation according to any one of claims 1 to 9 disposed on the upper surface of the heat dissipation plate; and
Comprising a heat dissipation flow path formed between the main curve fin and the sub curve fin of the heat dissipation fin for thermoelectric power generation to guide the air flow,
Heat dissipation assembly for thermoelectric power generation. According to claim 10,
The pressure at the inlet side of the heat dissipation plate is,
When the air moves through the heat dissipation passage, the pressure is greater than the outlet pressure of the heat dissipation plate.
Heat dissipation assembly for thermoelectric power generation.