TWM549331U - Star-shaped heat pipe structure - Google Patents

Description

Star heat pipe structure

An innovative star heat pipe structure comprises a high thermal conductivity star-shaped hollow ring body, and the two ends of the hollow ring body are closed to form a vacuum sealed space, and the closed space is provided with a capillary structure and a working fluid having a liquid-gas phase change . The outer part of the star heat pipe structure can form more absorption and heat dissipation areas, and the interior also provides more capillary structure space, in addition to providing heat dissipation for general electronic components, and providing various applications for fluid heat dissipation.

With the advancement of technology, in addition to electronic components, the heat dissipation requirements and applications of various products are increasing. The heat dissipation components commonly used in electronic products include heat pipes, temperature equalizing plates, heat sink fins and fans, etc. The above heat dissipating components are selectively used in various heat dissipating products under various cooling requirements, space constraints, cost constraints and the like.

Among them, regarding the heat pipe, the heat pipe structure of the conventional heat pipe structure is usually a hollow cylinder or a rectangular body and surrounds a heat transfer working space, and the principle is that the working fluid inside the evaporation section of the heat pipe evaporates to take off latent heat, borrowing steam The flow is sent to the condensation section for heat release, and the working fluid is returned to the evaporation section by the capillary structure to perform a cycle of liquid-gas phase change, and the heat energy is continuously transmitted.

In addition, the axial cross-section of the hollow tube of the conventional heat pipe structure is generally hollow circular or rectangular. However, in the evaporation section and the condensation section, the contact surface area of the heat transfer outside the heat pipe is too small, and the thermal resistance is relatively increased. Moreover, the flow cross-sectional area of the capillary structure cannot be improved, and the circulation and heat transfer of the working fluid liquid phase change are affected, and the improvement of the heat pipe performance has been limited.

In view of improving the efficiency of existing heat pipes and making them more widely used in various heat dissipating media and equipment, the present invention provides a star heat pipe structure having a larger contact conduction area than a conventional heat pipe structure, and reducing the evaporation section and the condensation section wall. The contact thermal resistance also provides more capillary structure space in the tube, thereby improving the efficiency of the gas phase change cycle of the heat pipe liquid, and increasing the application of the heat pipe in various products.

In order to achieve the above and other objects, the star heat pipe structure of the present invention is proposed, comprising a hollow ring body and a capillary structure, the hollow ring body having a plurality of protruding portions; the capillary structure being formed on the inner wall of the hollow ring body or from the outside Filling the inside of the hollow ring body for molding, wherein a plurality of protruding portions of the hollow ring body are formed on an outer surface of the hollow ring body, and the protruding portions are viewed from the hollow ring in axial cross section The body extends outward. Accordingly, the present star-shaped heat pipe structure increases the contact area of the heat pipe surface by the protruding portion, and also increases the internal capillary structure space and the capillary flow cross-sectional area, so that the heat transfer efficiency of the heat pipe is improved.

In one embodiment of the above-described star heat pipe structure, the axial cross-sectional shape of the hollow ring body is three-star, four-star, five-star, six-star, seven-star, eight-star, isometric star or Irregular star, I-shaped, king-shaped or irregularly protruding shapes.

In one embodiment of the above-described star heat pipe structure, the number of the protruding portions is four, and the protruding portions are respectively located at the axial center point of the hollow ring body from the axial cross-section of the hollow ring body. The 0 degree, 90 degree, 180 degree, and 270 degree directions, and the protruding portions extend outward in the direction of the position.

In one embodiment of the above-described star heat pipe structure, the number of the protruding portions is eight, and the protruding portions are respectively located at the axial center point of the hollow ring body from the axial cross-section of the hollow ring body. The 0 degree, 45 degree, 90 degree, 135 degree, 180 degree, 225 degree, 270 degree and 315 degree directions, and the protruding parts extend outward in the direction of the position.

In one embodiment of the above-described star heat pipe structure, the number of the protruding portions is six, and the protruding portions are respectively located at an axial center point of the hollow ring body from an axial cross section of the hollow ring body. The 0 degree, 60 degree, 120 degree, 180 degree, 240 degree and 300 degree directions, and the protruding parts extend outward in the direction of the position.

In one embodiment of the star-shaped heat pipe structure, the hollow ring body has an I-shape, and the number of the protruding portions is four, and the protruding portions are respectively located from the axial cross-section of the hollow ring body. Four corners of the hollow ring body, and two of the protruding portions extend in a first direction, and the other two of the protruding portions extend in a second direction, the first direction being opposite to the second direction direction.

For the star heat pipe structure as described above, the hollow ring system is formed by an extrusion process, a drawing process or a welding process, and both ends of the star heat pipe structure are sealed by a jig processing method (such as a stamping or welding process).

In the above-mentioned star heat pipe structure, the heat source will not be limited to the general solid electronic components due to the increase of the contact area and the thermal resistance, and the heat dissipation application can be provided in a liquid state, a gas state or a specific shape, and the condensation section can also be a star heat pipe. The form provides heat sink fins to form a heat sink for a particular application.

Thereby, the present star-shaped heat pipe structure increases the external contact surface area of the heat pipe, increases the capillary structure space and the capillary flow cross-sectional area of the heat pipe, and reduces the contact thermal resistance between the wall of the evaporation section and the condensation section and the cold heat source by the protruding portions. The heat transfer efficiency of the heat pipe is improved, and the application of the heat pipe to various products is increased.

In order to fully understand the purpose, features and effects of this creation, the following specific examples, together with the drawings, provide a detailed description of the creation, as explained below:

1A to 4C, which are perspective and axial cross-sectional views of the first to fourth embodiments of the present star-shaped heat pipe structure 100, 200, 300, 400, the star heat pipe structure 100, 200, 300, The 400 includes a hollow ring body 10, a plurality of protruding portions 20, a capillary wall capillary structure 30, a filling capillary structure 40, and a working fluid 50. The hollow ring body 10 is hollow and surrounds a heat transfer working space S. The hollow ring body 10 The two ends have an evaporation end seal 11 and a condensation end seal 12 respectively; the protruding portions 20 are disposed on the outer surface of the hollow ring body 10, and the protruding portions 20 are viewed from the axial cross section of the hollow ring body 10 The outer surface of the hollow ring body 10 extends outward.

As shown in FIG. 1A, in the first embodiment of the present star-shaped heat pipe structure 100, the number of the protruding portions 20 is four (indicated by 20a, 20b, 20c, 20d, respectively).

As shown in FIG. 1B, from the axial cross section of the hollow ring body 10, the first projecting portion 20a is located above the axial center point X of the hollow ring body 10 (0 degree) and in the upward direction. Extending outwardly, the second protruding portion 20b is located in the right (90 degree) direction of the axial center point X of the hollow ring body 10 and extends outward in the right direction, and the third protruding portion 20c is located in the hollow ring body 10 The axial center point X is in the lower (180 degree) direction and extends outward in the downward direction, and the fourth protruding portion 20d is located in the left (270 degree) direction of the axial center point X of the hollow ring body 10 and is along the left The direction extends outward. The tube wall capillary structure 30 is formed on the inner wall of the hollow ring body 10.

As shown in FIG. 1C, from the axial cross section of the hollow ring body 10, the first protruding portion 20a is located at an upper (0 degree) direction of the axial center point X of the hollow ring body 10 and is oriented in the upward direction. Extending outwardly, the second protruding portion 20b is located in the right (90 degree) direction of the axial center point X of the hollow ring body 10 and extends outward in the right direction, and the third protruding portion 20c is located in the hollow ring body 10 The axial center point X is in the lower (180 degree) direction and extends outward in the downward direction, and the fourth protruding portion 20d is located in the left (270 degree) direction of the axial center point X of the hollow ring body 10 and is along the left The direction extends outward. The filling capillary structure 40 is molded from the outside into the hollow ring body 10 to be molded.

As shown in FIG. 2A, in the second embodiment of the present star-shaped heat pipe structure 200, the number of the protruding portions 20 is eight.

As shown in FIG. 2B, the eight protruding portions 20 are respectively located at an axial center point X (0 degrees) and upper right (45 degrees) of the hollow ring body 10 from the axial cross section of the hollow ring body 10, Right (90 degrees), lower right (135 degrees), lower (180 degrees), lower left (225 degrees), left (270 degrees) and upper left (315 degrees) directions and extend outward in the direction of the position, for example, in the hollow The protruding portion of the ring body 10 at the axial center point X (0 degree) direction extends outward in the upward direction. The tube wall capillary structure 30 is formed on the inner wall of the hollow ring body 10.

As shown in FIG. 2C, eight protruding portions 20 are respectively located above the axial center point X (0 degrees) and upper right (45 degrees) of the hollow ring body 10 from the axial cross section of the hollow ring body 10, Right (90 degrees), lower right (135 degrees), lower (180 degrees), lower left (225 degrees), left (270 degrees) and upper left (315 degrees) directions and extend outward in the direction of the position, for example, in the hollow The protruding portion of the ring body 10 at the axial center point X (0 degree) direction extends outward in the upward direction. The filling capillary structure 40 is molded from the outside into the hollow ring body 10 to be molded.

As shown in FIG. 3A, in the third embodiment of the present star-shaped heat pipe structure 300, the number of the protruding portions 20 is six.

As shown in FIG. 3B, from the axial cross-section of the hollow ring body 10, the six protruding portions 20 are respectively located at 0, 60, 120, and 180 degrees of the axial center point X of the hollow ring body 10, 240 degrees and 300 degrees and extend outward in the direction of the position. The tube wall capillary structure 30 is formed on the inner wall of the hollow ring body 10.

As shown in FIG. 3C, the six protruding portions 20 are located at 0, 60, 120, and 180 degrees of the axial center point X of the hollow ring body 10, respectively, from the axial cross section of the hollow ring body 10. 240 degrees and 300 degrees and extend outward in the direction of the position. The filling capillary structure 40 is molded from the outside into the hollow ring body 10 to be molded.

In the first to third embodiments of the present star-shaped heat pipe structure, the protruding portions 20 extend radially outward, thereby increasing the external contact surface area of the heat pipe, increasing the capillary structure space and the capillary flow cross-sectional area of the heat pipe, and reducing evaporation. The thermal resistance of the contact between the wall of the segment and the condensing section and the cold heat source improves the heat transfer efficiency of the heat pipe and increases the application of the heat pipe to various products.

In addition, the 4th, 8th or 6th protruding portions 20 of the first to third embodiments of the present inventive star-shaped heat pipe structure are located at the maximum bisector angle, so that the distance between the protruding portions 20 is the farthest, and the present star-shaped heat pipe structure is created. For example, in the first embodiment of 100, the angle difference between the two protruding portions 20 is 90 degrees (360 degrees divided by 4), thereby achieving uniform heat dissipation and aesthetics to the surroundings.

In addition, it is worth noting that the number of the protruding portions 20 of the present star-shaped heat pipe structure is not limited to 4, 6, or 8, and may be other numbers, such as 3, 5, 10 or others.

In addition, it is worth noting that although the protruding portions 20 of the first to third embodiments of the present inventive star-shaped heat pipe structure are radially and located at the maximum bisector angle to achieve a specific effect, the creation is not limited to In the fourth embodiment and other possible embodiments, the protruding portions 20 may not be radial, or may be radial but not at a maximum equal division angle.

As shown in FIG. 4A, in the fourth embodiment of the present star-shaped heat pipe structure 400, the hollow ring body 10 is a rectangular body, and the number of the protruding portions 20 is four.

As shown in FIG. 4B, the protruding portions 20 (indicated by 20e, 20f, 20g, 20h) are respectively located at four corners of the hollow ring body 10 from the axial cross-section of the hollow ring body 10, and the protrusions are The portion 20e and the protruding portion 20 extend outward in a first direction D1. The protruding portion 20g and the protruding portion 20h extend outward in a second direction D2, the first direction D1 being opposite to the second direction D2. The tube wall capillary structure 30 is formed on the inner wall of the hollow ring body 10.

As shown in FIG. 4C, the protruding portions 20 (indicated by 20e, 20f, 20g, 20h) are respectively located at four corners of the hollow ring body 10, and the protrusions are viewed from the axial cross section of the hollow ring body 10, respectively. The portion 20e and the protruding portion 20 extend outward in a first direction D1. The protruding portion 20g and the protruding portion 20h extend outward in a second direction D2, the first direction D1 being opposite to the second direction D2. The filling capillary structure 40 is molded from the outside into the hollow ring body 10 to be molded.

In the fourth embodiment of the present star-shaped heat pipe structure 400, the protruding portions 20 are respectively located at four corners of the hollow ring body 10 and two sets (two sets of) protruding portions extend in opposite directions, thereby greatly increasing The surface area is increased to achieve the effect of improving heat exchange efficiency. In addition, the design of this embodiment has the convenience and feasibility of the process, uniform heat dissipation to the surroundings, and aesthetic effects.

10‧‧‧Hollow ring
11‧‧‧Evaporation end sealing
12‧‧‧condensing end seal
20, 20a~20h‧‧‧ highlight
100, 200, 300, 400‧‧‧ star heat pipe structure
30‧‧‧ Tube wall capillary structure
40‧‧‧Filled capillary structure
50‧‧‧Working fluid
D1‧‧‧ first direction
D2‧‧‧ second direction
S‧‧‧heat transfer work space
X‧‧‧ axial center point

Fig. 1A is a perspective view showing a first embodiment of the present star-shaped heat pipe structure. 1B is an axial cross-sectional view (tube wall capillary) of a hollow ring body of the first embodiment of the present star-shaped heat pipe structure. 1C is an axial cross-sectional view (filling capillary) of a hollow ring body of the first embodiment of the present star-shaped heat pipe structure. Fig. 2A is a perspective view showing a second embodiment of the present star-shaped heat pipe structure. 2B is an axial cross-sectional view (tube wall capillary) of a hollow ring body of a second embodiment of the present star-shaped heat pipe structure. 2C is an axial cross-sectional view (filling capillary) of a hollow ring body of a second embodiment of the present star-shaped heat pipe structure. Fig. 3A is a perspective view showing a third embodiment of the present star-shaped heat pipe structure. [Fig. 3B] An axial cross-sectional view (tube wall capillary) of a hollow ring body of a third embodiment of the present star-shaped heat pipe structure. [Fig. 3C] An axial cross-sectional view (filling capillary) of a hollow ring body of a third embodiment of the present inventive star-shaped heat pipe structure. Fig. 4A is a perspective view showing a fourth embodiment of the present star-shaped heat pipe structure. 4B is an axial cross-sectional view (tube wall capillary) of a hollow ring body of a fourth embodiment of the present star-shaped heat pipe structure. 4C is an axial cross-sectional view (filling capillary) of a hollow ring body of a fourth embodiment of the present star-shaped heat pipe structure.

10‧‧‧Hollow ring

11‧‧‧Evaporation end sealing

12‧‧‧condensing end seal

20a~20d‧‧‧ highlight

100‧‧‧Star heat pipe structure

Claims (9)

A star heat pipe structure comprising: a hollow ring body having a plurality of protruding portions; a capillary structure formed on an inner wall of the hollow ring body or being externally filled into the hollow ring body for molding, wherein the hollow ring body A plurality of protruding portions are formed on an outer surface of the hollow ring body, and the protruding portions extend outward from the hollow ring body in a cross-sectional view from the axial direction of the hollow ring body. The star heat pipe structure according to claim 1, wherein the hollow ring body has an axial cross-sectional shape of three stars, four stars, five stars, six stars, seven stars, eight stars, and equiangular stars. Shape or irregular star, I-shaped, king-shaped or irregular protruding shape. The star-shaped heat pipe structure according to claim 2, wherein the number of the protruding portions is four, and the protruding portions are respectively located at an axial center of the hollow ring body from an axial cross-sectional view of the hollow ring body The 0, 90, 180, and 270 degree directions of the points, and the protruding portions extend outward in the direction of the position. The star heat pipe structure according to claim 2, wherein the number of the protruding portions is six, and the protruding portions are respectively located in the axial direction of the hollow ring body from the axial cross section of the hollow ring body The center points are 0 degrees, 60 degrees, 120 degrees, 180 degrees, 240 degrees, and 300 degrees, and the protruding portions extend outward in the direction of the position. The star-shaped heat pipe structure according to claim 2, wherein the number of the protruding portions is eight, and the protruding portions are respectively located in the axial direction of the hollow ring body from the axial cross-sectional view of the hollow ring body The center points are 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees, and 315 degrees, and the protruding portions extend outward in the direction of the position. The star-shaped heat pipe structure according to claim 2, wherein the hollow ring body has an axial cross-sectional shape of an I-shape, and the number of the protruding portions is four, from the axial cross-section of the hollow ring body. The protruding portions are respectively located at four corners of the hollow ring body, and two of the protruding portions extend in a first direction, and the other two of the protruding portions extend in a second direction, The first direction is opposite to the second direction. The star-shaped heat pipe structure according to any one of claims 1 to 6, wherein the hollow ring system is formed by an extrusion type, a drawing process or a welding process, and both ends of the star heat pipe structure are processed by a jig. seal. The star heat pipe structure of claim 7, wherein both ends of the star heat pipe structure are sealed by a stamping process. The star heat pipe structure according to claim 7, wherein both ends of the star heat pipe structure are sealed by a welding process.