TWM534957U - Heat dissipation device - Google Patents

Abstract

A heat dissipation device is provided herein. The heat dissipation device includes an evaporator, a first heat exchanger, a first heat pipe, a second heat exchanger and a second heat pipe. The first heat pipe includes a first liquid channel and a first gas channel. One end of the first gas channel is connected to a first end of the evaporator, and the other end of the first gas channel is connected to an inlet end of the first heat exchanger. One end of the first liquid channel is connected to an outlet end of the first heat exchanger, and the other end of the first liquid channel is connected to a second end of the evaporator. The second heat pipe includes a second gas channel and a second liquid channel. One end of the second gas channel is connected to the second end of the evaporator, and the other end of the second gas channel is connected to an inlet end of the second heat exchanger. One end of the second liquid channel is connected to an outlet end of the second heat exchanger, and the other end of the second liquid channel is connected to the first end of the evaporator.

Description

Heat sink

This case relates to a heat sink, in particular a non-directional heat sink.

The conventional circuit-type heat dissipation structure adopts a single circuit, and adopts an evaporation chamber, a heat exchanger, a vapor section pipeline and a liquid section pipeline to form a circuit of the working fluid, and utilizes a cycle of liquid-phase two-phase change to solve the heat generation of the electronic component. problem.

The present disclosure discloses a heat sink comprising an evaporator, a first heat exchanger, a first heat pipe, a second heat exchanger and a second heat pipe, the first heat pipe having a first liquid section line and a first vapor a first pipeline end of the first vapor section is connected to a first end of the evaporator, the other end is connected to an inlet end of the first heat exchanger, and one end of the first liquid section is connected to one of the first heat exchangers An outlet end, the other end is connected to a second end of the evaporator; the second heat pipe has a second vapor segment line and a second liquid segment line, and the second vapor segment line is connected at one end to the second end of the evaporator The other end is connected to an inlet end of the second heat exchanger, and one end of the second liquid section line is connected to an outlet end of the second heat exchanger, and the other end is connected to the first end of the evaporator.

As described above, the heat dissipating device of the present invention has better heat dissipation effect, and can provide different placement modes according to actual conditions, and has excellent heat dissipation capability in any direction.

10‧‧‧heating device

100‧‧‧Evaporator

100a‧‧‧ first end

100b‧‧‧ second end

110‧‧‧First heat exchanger

110a‧‧‧ entrance end

110b‧‧‧export end

120‧‧‧First heat pipe

121‧‧‧First steam section line

122‧‧‧First liquid section pipeline

123‧‧‧Horizontal Department

123a‧‧‧ first end

123b‧‧‧second end

130‧‧‧second heat exchanger

130a‧‧‧ entrance end

130b‧‧‧export end

140‧‧‧second heat pipe

141‧‧‧Second liquid section pipeline

142‧‧‧Second steam section line

a, b‧‧‧ directions

P‧‧‧ datum

Ha, Hb‧‧‧ height

m, n‧‧‧ arrows

g‧‧‧Freight direction

FIG. 1 is a schematic structural view of a heat dissipating device according to an embodiment of the present invention.

2 is a schematic structural view of the heat dissipating device shown in FIG. 1 in a vertically placed state.

FIG. 3 is a schematic structural view of a first heat pipe of a heat dissipating device according to another embodiment of the present invention.

The heat dissipating device according to the embodiment of the present invention will be described below with reference to the related drawings, wherein the same elements will be described with the same reference numerals.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a heat dissipation device 10 according to an embodiment of the present invention. In this embodiment, two loops are taken as an example. In other embodiments, the number of loops can be adjusted according to actual needs, and the present invention is not limited thereto. The heat sink 10 includes an evaporator 100, a first heat exchanger 110, a first heat pipe 120, a second heat exchanger 130, and a second heat pipe 140. Wherein, the evaporator 100 is used to evaporate the working fluid to convert the working fluid from a liquid form to a gaseous form. In the present embodiment, the first heat pipe 120 and the second heat pipe 140 are respectively located on both sides of the evaporator 100 in the horizontal direction and are symmetrically disposed with respect to the evaporator 100.

The first heat exchanger 110 and the second heat exchanger 130 are working fluids for exothermic to the outside environment such that the working fluid in the form of a gas condenses into a liquid form. The first heat exchanger 110 may be a heat dissipation fin or a heat dissipation plate. Similarly, the second heat exchanger 130 can also be a heat sink fin or a heat sink.

The heat dissipating device 10 can have different placement modes, such as vertical placement and horizontal placement. FIG. 1 is horizontally arranged with the heat dissipation device 10. In the heat sink 10, the working fluid forms a circuit in the evaporator 100 and the first heat exchanger 110 through the first heat pipe 120, and at the same time, the working fluid is formed in the evaporator 100 and the second heat exchanger 130 through the second heat pipe 140. Another loop.

In the present embodiment, the working fluid circulation direction of the first heat pipe 120 is the same as the working fluid circulation direction of the second heat pipe 140. For example, the flow direction of the working fluid in both the first heat pipe 120 and the second heat pipe 140 is clockwise (directions a, b shown in FIG. 1).

The first heat pipe 120 has a first vapor section line 121 and a first liquid section line 122. One end of the first vapor section line 121 is connected to a first end 100a of the evaporator 100, and the other end is connected to an inlet end 110a of the first heat exchanger 110. The first liquid section line 122 is connected at one end to an outlet end 110b of the first heat exchanger 110, and the other end is connected to a second end 100b of the evaporator 100. Referring to FIG. 1, the working fluid absorbs heat in the evaporator 100 to evaporate, and the working fluid in the form of vapor enters the first heat exchange from the first end 100a of the evaporator 100 through the first vapor section line 121 under the action of vapor pressure. The working fluid in vapor form is condensed in the first heat exchanger 110 into a working fluid in liquid form and enters the first liquid section line 122 and then returned to the evaporator 100 via the second end 100b. That is, the working fluid is returned to the evaporator 100 via the evaporator 100, the first vapor section line 121, the first heat exchanger 110, and the first liquid section line 122, thereby forming a circuit.

Referring to FIG. 1 again, the second heat pipe 140 has a second liquid section line 141 and a second vapor section line 142. The second vapor section line 142 is connected at one end to the second end 100b of the evaporator 100 and at the other end to the inlet end 130a of the second heat exchanger 130. The second liquid section line 141 is connected at one end to the outlet end 130b of the second heat exchanger 130, and at the other end to the first end 100a of the evaporator 100. The flow of working fluid in the second heat pipe 140 is such that the working fluid enters the second vapor section line 142 from the second end 100b after evaporation of the evaporator 100, and then enters the cycle. That is, the working fluid absorbs heat in the evaporator 100 to vaporize, and the working fluid in the form of vapor enters the second heat exchanger 130 from the second end 100b of the evaporator 100 via the second vapor stage line 142 under the action of vapor pressure. The working fluid in vapor form is condensed in the second heat exchanger 130 to a working fluid in liquid form and enters the second liquid section line 141 and is then returned to the evaporator 100 via the first end 100a. That is, the working fluid is returned to the evaporator 100 via the evaporator 100, the second vapor section line 142, the second heat exchanger 130, and the second liquid section line 141, thereby forming a circuit.

Referring to FIG. 2 (see FIG. 1 for component symbols), when the heat sink 10 of FIG. 1 is vertically disposed, the first heat pipe 120 and the second heat pipe 140 are respectively located on two sides of the evaporator 100 in the vertical direction, and the first heat pipe 120 is disposed. Located on the upper side of the evaporator 100, the second heat pipe 140 is located on the lower side of the evaporator 100. The working fluid is evaporated by the evaporator 100 and then enters the first heat pipe 120 and the second heat pipe 140 by the opposite ends of the evaporator 100 (ie, the first end 100a and the second end 100b), respectively, so that the working fluid is in the first liquid The flow direction in the section line 122 and the flow direction in the second liquid section line 141 are the direction of the g-gravity g and the direction of the counter-gravity, respectively. As shown in FIG. 2, the circuit of the working fluid in the first heat pipe 120 is in the direction of gravity g, so the working fluid is not affected by the flow direction of the first liquid segment line 122 (direction indicated by the arrow m), but The circuit in the two heat pipes 140 is in the direction of the reverse gravity, and at this time, the circulation efficiency of the working fluid in the liquid section pipe in the second heat pipe 140 is not good. Therefore, the arrangement of the present invention can make the flow of the working fluid in at least one of the first liquid section line 122 and the second liquid section line 141 unaffected by the heat sink regardless of the position. For example, when the heat sink 10 is placed at the position shown in FIG. 2, the working fluid in the second heat pipe 140 may cause a poor circulation efficiency of the working fluid circuit due to gravity, but the working fluid circuit in the first heat pipe 120 does not It will reduce the efficiency due to gravity. On the contrary, if the heat sink shown in FIG. 2 is inverted, the working fluid circuit in the second heat pipe 140 can still operate normally. Therefore, no matter how the heat sink 10 is placed, there is always a loop unaffected. ring. Therefore, the placement position of the heat sink 10 is not limited by the directivity, and has excellent heat dissipation capability in any direction.

In addition, although the loop shape of the heat dissipating device 10 including the first heat pipe 120 and the second heat pipe 140 is a rectangle as an example, in other embodiments, the circuit may have other shapes, for example, a triangle, Round and so on. Although the two circuits in FIG. 1 have the same structure, in different embodiments, the change may be made according to specific requirements, such as adjusting the shape and size of the heat pipe, and the heat exchanger may have different types, arrangements, etc., and the circuit is also Can have different shapes.

Please refer to FIG. 1 and FIG. 3 for simplicity. FIG. 3 only shows the first heat pipe 120 of the heat dissipating device 10. FIG. 3 is a schematic structural view of the first heat pipe 120 of the heat dissipating device 10 according to an embodiment of the present invention. In the present embodiment, the first liquid segment line 122 has a horizontal drop portion 123 adjacent to the evaporator 100, and the horizontal drop portion 123 includes a first end 123a adjacent to the evaporator 100 and a second end 123b remote from the evaporator 100. The second end 123b is horizontally higher than the first end 123a. As shown in FIG. 3, with the plane at the bottom of the horizontal drop portion 123 as the reference plane p, the height of the first end 123a from the reference plane p is Ha, and the height of the second end 123b of the horizontal drop portion 123 is from the reference plane p. It is Hb, in which Hb is larger than Ha, so that the second end 123b of the horizontal drop portion 123 and the first end 123a form a height difference. When the heat sink 10 is horizontally placed, since the second end 123b is higher than the first end 123a, when the working fluid enters from the second end 123b of the horizontal drop portion 123, the working fluid can flow toward the bottom of the horizontal drop portion 123 by the action of gravity. Thereby, the liquid-gas separation is achieved, and the liquid is driven by the vapor to promote the return of the working fluid to the evaporator 100 (in the direction indicated by the arrow n in FIG. 3) to accelerate the circulation of the working fluid.

As shown in FIG. 3, in the present embodiment, the shape between the first end 123a and the second end 123b of the horizontal drop portion 123 is an arc shape. In other embodiments, the shape between the first end and the second end may also be other shapes. For example, a line shape, a diagonal line shape. The position, the number of the horizontal drop portion 123 disposed in the circuit, and the height difference between the first end 123a and the second end 123b of the horizontal drop portion 123 may be adjusted as needed. In one embodiment, the second liquid section line also has a horizontal drop portion, which will not be described herein.

As can be seen from the above, when the heat dissipating device 10 is horizontally placed, the first heat pipe 120 is taken as an example for description. When the working fluid is condensed by the first heat exchanger 110, it is condensed into a liquid form working flow. When the body enters the first liquid section line 122, since the first liquid section line 122 is provided with the horizontal falling portion 123, the driving direction of the vapor is at an angle of a certain angle with the flow direction of the liquid, thereby achieving liquid-gas separation. The liquid is driven by the vapor to promote the return of the working liquid to the evaporator 100, accelerate the circulation of the working fluid, and improve the heat dissipation capability of the heat sink.

In one embodiment, the heat sink 10 further includes a compensation chamber (not shown) that is coupled to the evaporator 100. The compensation chamber is for replenishing the working liquid to the evaporator 100 to compensate for the loss of the working fluid in the circulation. In the present embodiment, the compensation chamber is disposed within the evaporator 100. The compensation chamber has a capillary structure, and the working liquid in the compensation chamber replenishes the working liquid into the evaporator 100 by capillary phenomenon.

In addition, a plurality of heat pipes may be disposed in the heat sink 10 to form a plurality of circuits according to usage requirements. When a plurality of heat pipes are disposed in the heat sink, the heat pipes share the evaporator and the compensation chamber. In actual use, different numbers of heat pipes and circuits can be selected depending on the capacity of the evaporator and the compensation chamber. When the heat sink has a plurality of loops, the different loops may be asymmetrically arranged relative to the evaporator. In an embodiment, two circuits are arranged above the evaporator, and three circuits are arranged under the evaporator, which is not limited thereto.

In summary, the heat sink of this case has excellent heat dissipation capability when placed in different positions, such as horizontal placement and vertical placement.

The above description is by way of example only and not as a limitation. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims.

10‧‧‧heating device

100‧‧‧Evaporator

100a‧‧‧ first end

100b‧‧‧ second end

110‧‧‧First heat exchanger

110a‧‧‧ entrance end

110b‧‧‧export end

120‧‧‧First heat pipe

121‧‧‧First steam section line

122‧‧‧First liquid section pipeline

130‧‧‧second heat exchanger

130a‧‧‧ entrance end

130b‧‧‧export end

140‧‧‧second heat pipe

141‧‧‧Second liquid section pipeline

142‧‧‧Second steam section line

a, b‧‧‧ directions

Claims (10)

A heat dissipating device comprises: an evaporator; a first heat exchanger; a first heat pipe having a first vapor section line and a first liquid section line, wherein the first vapor section line is connected to the evaporation at one end a first end of the device is connected to an inlet end of the first heat exchanger, and one end of the first liquid segment line is connected to an outlet end of the first heat exchanger, and the other end is connected to the evaporator a second end; a second heat exchanger; and a second heat pipe having a second vapor section line and a second liquid section line, the second vapor stage line being connected to the evaporator at one end The second end is connected to an inlet end of the second heat exchanger, and the second liquid segment is connected at one end to an outlet end of the second heat exchanger, and the other end is connected to the evaporator First end. The heat sink of claim 1, wherein the working fluid circulation direction of the first heat pipe is the same as the working fluid circulation direction of the second heat pipe. The heat sink of claim 1, wherein the first liquid section conduit has a horizontal drop portion adjacent to the evaporator, the horizontal drop portion including a first end adjacent to the evaporator and away from the evaporator At the second end, the second end of the horizontal drop is horizontally higher than the first end of the horizontal drop. The heat sink of claim 3, wherein the shape of the first end and the second end of the horizontal drop portion is curved. The heat sink of claim 1, wherein the first heat pipe and the second heat pipe are symmetrically disposed with respect to the evaporator. The heat dissipating device according to claim 1, wherein the first heat pipe and the second heat pipe are respectively located at two sides of the evaporator in the vertical direction. The heat dissipating device of claim 1, wherein the first heat pipe and the second heat pipe are respectively located on two sides of the evaporator in a horizontal direction. According to the heat sink of claim 1, the compensation device further includes a compensation chamber connected to the evaporator. A heat sink according to item 8 of the patent application, wherein the compensation chamber has a capillary structure. The heat dissipating device according to claim 1, wherein the first heat exchanger is a heat dissipating fin or a heat dissipating plate.