Heat pipe radiator

Abstract

The utility model relates to a heat pipe radiator which comprises an arc-shaped plate-type heat pipe, a plurality of working cavities are arranged in the plate-type heat pipe, the length direction of the working cavities is consistent with the circumferential direction of the plate-type heat pipe, capillary structure layers are arranged on the inner walls of the working cavities, and working media are filled in the working cavities. An inner heat insulation plate is arranged on the inner side of the plate type heat pipe, the two ends of the working cavity are located on the same side of the inner heat insulation plate, a heat dissipation cavity is defined by the inner heat insulation plate and the plate type heat pipe in the middle of the working cavity, and an air supply mechanism is arranged at one end of the heat dissipation cavity. A traditional and conventional flat plate type heat pipe is curled into the arc-shaped heat pipe, the inner heat insulation plate is arranged on the inner side of the arc-shaped heat pipe, so that the heat dissipation cavity is formed in the inner side of the arc-shaped heat pipe, the air supply mechanism is installed at one end of the heat dissipation cavity, external air is promoted to flow through the heat dissipation cavity, and the heat dissipation efficiency is improved. Therefore, the middle part of the arc-shaped heat pipe can be cooled and radiated, the radiating effect is ensured, and the structure of the radiator is more simplified.

Description

Technical Field

[0001] The utility model belongs to the field of heat dissipation devices, in particular to a heat pipe radiator. Background Art

[0002] The heat pipe radiator is one of the commonly used radiators for electronic devices. Its core component is a heat pipe, which is internally provided with a capillary structure layer and a working medium. The working process is as follows: the working medium absorbs heat and vaporizes at the evaporation end, and then moves through the inner cavity of the heat pipe to the cooling end. The gaseous working medium liquefies when it meets cold at the cooling end, and then returns to the evaporation end under the action of the capillary structure layer. The working medium circulates, continuously transferring the heat at the evaporation end to the cooling end to achieve heat dissipation at the evaporation end.

[0003] In order to improve the cooling speed of the cooling end of the heat pipe, the heat pipe is usually used in combination with a fan, that is, the fan blows air to the cooling end of the heat pipe to quickly take away the heat at the cooling end of the heat pipe. In order to make full use of the flowing air provided by the fan, the cooling end of the heat pipe is usually arranged in a channel with both ends open. The fan inputs the outside cold air into the channel from one end, and the air flows through the cooling end of the heat pipe and then discharges from the other end. For specific reference, please refer to the prior arts such as CN202410452157.1 - Ring - plate type heat pipe, heat dissipation mechanism and heat dissipation system, and CN202410032910.1 - Heat pipe, radiator and electronic device. This traditional method has a more complex structure and a larger volume. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a heat pipe radiator with a more simplified structure.

[0005] To solve the above problems, the technical solution adopted by the utility model is: a heat pipe radiator, including an arc - shaped plate - type heat pipe. A plurality of working chambers are arranged inside the plate - type heat pipe. The length direction of the working chamber is consistent with the circumferential direction of the plate - type heat pipe. The inner wall of the working chamber is provided with a capillary structure layer, and the working chamber is filled with a working medium. An inner heat insulation plate is arranged inside the plate - type heat pipe. Both ends of the working chamber are on the same side of the inner heat insulation plate. The inner heat insulation plate and the plate - type heat pipe in the middle of the working chamber enclose a heat dissipation chamber, and a wind supply mechanism is arranged at one end of the heat dissipation chamber.

[0006] Further, the wind supply mechanism is a fan.

[0007] Further, an outer heat insulation plate is arranged outside the plate - type heat pipe, and the outer heat insulation plate is parallel to the inner heat insulation plate.

[0008] Further, installation through - holes are arranged on the outer heat insulation plate.

[0009] Further, the plate heat pipe includes a first heat conducting plate and a second heat conducting plate. A plurality of first working grooves are provided on the side surface of the first heat conducting plate, and a plurality of second working grooves are provided on the side surface of the second heat conducting plate. The first heat conducting plate and the second heat conducting plate are attached to each other, so that each first working groove and a second working groove enclose a working cavity, and the edges of the first heat conducting plate and the second heat conducting plate are connected by welding.

[0010] Further, the first heat conducting plate and the second heat conducting plate are copper plates.

[0011] Further, the cross sections of the first working groove and the second working groove are semi-circular.

[0012] Further, welding grooves are provided at the edges of the first heat conducting plate and the second heat conducting plate.

[0013] Further, the central angle of the plate heat pipe is greater than 180 degrees.

[0014] The beneficial effects of the present utility model are as follows: By curling the traditional conventional flat heat pipe into an arc-shaped heat pipe and arranging an inner heat insulation plate on the inner side of the arc-shaped heat pipe, a heat dissipation cavity is formed on the inner side of the arc-shaped heat pipe. The air supply mechanism is installed at one end of the heat dissipation cavity, so that the outside air flows through the heat dissipation cavity, thereby cooling and dissipating heat from the middle part of the arc-shaped heat pipe. The middle part of the arc-shaped heat pipe serves as the cooling end, and the two sides of the arc-shaped heat pipe serve as the evaporation ends, ensuring the heat dissipation effect and simplifying the structure of the radiator. Description of the Drawings

[0015] Figure 1 is a cross-sectional view of the heat pipe radiator of the present utility model;

[0016] Figure 2 is Figure 1 the cross-sectional view taken along A-A in

[0017] Figure 3 is an application diagram of the heat pipe radiator of the present utility model;

[0018] Reference numerals: 10 - plate heat pipe; 11 - working cavity; 12 - capillary structure layer; 13 - first heat conducting plate; 14 - second heat conducting plate; 15 - welding groove; 20 - inner heat insulation plate; 21 - heat dissipation cavity; 22 - outer heat insulation plate; 23 - installation through hole; 30 - air supply mechanism; 40 - housing. Detailed Embodiments

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] The heat pipe radiator of the present utility model, as shown in Figure 1 and Figure 2As shown in the figure, it includes an arc-shaped plate heat pipe 10. Inside the plate heat pipe 10, there are multiple working chambers 11. The length direction of the working chambers 11 is consistent with the circumferential direction of the plate heat pipe 10. The inner wall of the working chambers 11 is provided with a capillary structure layer 12, and the working chambers 11 are filled with a working medium; an inner heat insulation plate 20 is arranged on the inner side of the plate heat pipe 10. Both ends of the working chambers 11 are on the same side of the inner heat insulation plate 20. The inner heat insulation plate 20 and the plate heat pipe 10 in the middle of the working chambers 11 enclose a heat dissipation chamber 21, and an air supply mechanism 30 is arranged at one end of the heat dissipation chamber 21.

[0021] The arc-shaped plate heat pipe 10 can be formed by curling a conventional flat plate heat pipe. When curling, the bending direction of the plate heat pipe 10 is the circumferential direction of the plate heat pipe 10. The capillary structure layer 12 and the working medium inside the working chambers 11 cooperate to work, playing a role in transferring heat, so as to achieve heat dissipation. Both ends of the working chambers 11, that is, both sides of the plate heat pipe 10, are evaporation ends, and the plate heat pipe 10 in the middle of the working chambers 11 is the cooling end. The evaporation end and the cooling end are separated by the inner heat insulation plate 20, reducing the influence of heat transfer, so that the transfer of heat depends more on the phase change of the working medium, ensuring the heat dissipation effect. In addition, the inner heat insulation plate 20 and the middle of the plate heat pipe 10 enclose a heat dissipation chamber 21 with both ends open, and an air supply mechanism 30 is arranged at one end of the heat dissipation chamber 21. During operation, the air supply mechanism 30 conveys the outside cold air into the heat dissipation chamber 21, and the cold air flows along the heat dissipation chamber 21, taking away the heat of the cooling end of the plate heat pipe 10, prompting the gaseous working medium inside the cooling end to liquefy, and then returning to the evaporation end under the capillary action of the capillary structure layer 12.

[0022] For the radiator of the present utility model, the heat dissipation chamber 21 is enclosed by the plate heat pipe 10 itself and the inner heat insulation plate 20, without other air supply channels, simplifying the structure of the radiator.

[0023] The air supply mechanism 30 is a fan or a conventional device such as an air pump.

[0024] In order to further reduce the influence of heat transfer, an outer heat insulation plate 22 is arranged on the outer side of the plate heat pipe 10, and the outer heat insulation plate 22 is parallel to the inner heat insulation plate 20. The outer heat insulation plate 22 and the inner heat insulation plate 20 can use conventional heat insulation materials.

[0025] In order to facilitate the installation of this heat pipe radiator, a plurality of installation through holes 23 are arranged on the outer heat insulation plate 22. During installation, the outer heat insulation plate 22 can be fixed on the electronic device through screws passing through the installation through holes 23, which is convenient for installation.

[0026] For the convenience of preparing the plate heat pipe 10, the plate heat pipe 10 of the present utility model comprises a first heat conducting plate 13 and a second heat conducting plate 14. A plurality of first working grooves are arranged on the side surface of the first heat conducting plate 13, and a plurality of second working grooves are arranged on the side surface of the second heat conducting plate 14. The first heat conducting plate 13 and the second heat conducting plate 14 are attached to each other, so that each first working groove and a second working groove enclose a working cavity 11, and the edges of the first heat conducting plate 13 and the second heat conducting plate 14 are connected by welding.

[0027] The first heat conducting plate 13 and the second heat conducting plate 14 can be made of metal plates with high heat conductivity coefficients such as copper plates and stainless steel plates, and preferably copper plates. During preparation, taking a conventional copper plate as the raw material, cutting and blanking to obtain two rectangular raw material plates with the same size, then opening a plurality of first working grooves and second working grooves parallel to each other on the side surfaces of the raw material plates, then spraying copper powder on the inner walls of the first working grooves and the second working grooves, and then sintering. The copper powder is converted into a capillary structure layer 12. Then the first heat conducting plate 13 and the second heat conducting plate 14 are attached to each other, ensuring that each first working groove is aligned with the second working groove, and then the edges of the first heat conducting plate 13 and the second heat conducting plate 14 are welded. When processing the first working grooves and the second working grooves, a working medium injection groove can be processed at one end of the first working grooves and the second working grooves. The working medium injection groove is communicated with all the first working grooves or the second working grooves, and one end of the working medium injection groove extends to the edge of the first heat conducting plate 13 or the second heat conducting plate 14 and is communicated with the outside. After the first heat conducting plate 13 and the second heat conducting plate 14 are welded, an appropriate amount of working medium is injected through the working medium injection groove, and then the port of the working medium injection groove is sealed to obtain a flat heat pipe. Finally, the flat heat pipe is curled to obtain the arc-shaped plate heat pipe 10 of the present utility model.

[0028] The cross sections of the first working grooves and the second working grooves can be rectangular. As a preferred embodiment, the cross sections of the first working grooves and the second working grooves are semi-circular, enclosing a circular working cavity 11.

[0029] Welding grooves 15 are arranged at the edges of the first heat conducting plate 13 and the second heat conducting plate 14. During welding, the welding grooves 15 are filled completely to ensure the connection strength between the first heat conducting plate 13 and the second heat conducting plate 14 and the sealing performance at the connection part.

[0030] In the present utility model, the central angle of the plate heat pipe 10 is greater than 180 degrees, making the overall volume of the radiator smaller.

[0031] When using the heat pipe radiator of the present utility model, the whole radiator can be fixed on the housing 40 of the electronic device through the outer heat insulation plate 22, such as Figure 3As shown, both side edges of the plate heat pipe 10 serve as the evaporation ends and are located inside the housing 40 of the electronic device. The middle part of the plate heat pipe 10 serves as the cooling end, and the cooling end and the air supply mechanism 30 are located outside the housing 40. When the electronic device is operating, the components inside generate heat and the temperature rises. The working fluid at both ends of the working chamber 11 absorbs heat and evaporates into gas, then moves to the middle part of the plate heat pipe 10, then dissipates heat and cools down to liquefy, and then returns to both ends of the working chamber 11 under the action of the capillary structure layer 12. The air supply mechanism 30 inputs external air into the heat dissipation chamber 21, and the heat of the plate heat pipe 10 is carried away when the air flows through the plate heat pipe 10, promoting the cooling and liquefaction of the gaseous working fluid.

[0032] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Heat pipe radiator, characterized in that: The invention comprises an arc-shaped plate-type heat pipe (10), wherein a plurality of working chambers (11) are arranged inside the plate-type heat pipe (10), wherein the length direction of the working chamber (11) is consistent with the circumference direction of the plate-type heat pipe (10), wherein the inner wall of the working chamber (11) is provided with a capillary structure layer (12), and wherein the working chamber (11) is filled with a working medium; wherein an inner heat insulation board (20) is arranged inside the plate-type heat pipe (10), wherein both ends of the working chamber (11) are located on the same side of the inner heat insulation board (20), wherein the inner heat insulation board (20) and the plate-type heat pipe (10) in the middle of the working chamber (11) form a heat dissipation chamber (21), and wherein an air supply mechanism (30) is arranged at one end of the heat dissipation chamber (21).

2. The heat pipe radiator according to claim 1, characterized in that: The air supply mechanism (30) is a fan.

3. The heat pipe radiator according to claim 1, characterized in that: An outer heat insulation board (22) is arranged on the outer side of the plate-type heat pipe (10), and the outer heat insulation board (22) is parallel to the inner heat insulation board (20).

4. The heat pipe radiator according to claim 3, characterized in that: The outer heat insulation board (22) is provided with a mounting through hole (23).

5. The heat pipe radiator according to claim 1, characterized in that: The plate-type heat pipe (10) comprises a first heat conducting plate (13) and a second heat conducting plate (14); a plurality of first working grooves are arranged on a side surface of the first heat conducting plate (13); a plurality of second working grooves are arranged on a side surface of the second heat conducting plate (14); the first heat conducting plate (13) and the second heat conducting plate (14) are fitted together so that each first working groove and a second working groove form a working cavity (11); and the edges of the first heat conducting plate (13) and the second heat conducting plate (14) are welded together.

6. The heat pipe radiator according to claim 5, characterized in that: The first heat conducting plate (13) and the second heat conducting plate (14) are copper plates.

7. The heat pipe radiator according to claim 5, characterized in that: The first working groove and the second working groove have a semicircular cross section.

8. The heat pipe radiator according to claim 5, characterized in that: The edges of the first heat conducting plate (13) and the second heat conducting plate (14) are provided with welding grooves (15).

9. The heat pipe radiator according to claim 1, characterized in that: The central angle of the plate-type heat pipe (10) is greater than 180 degrees.

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