MIDDLE MEMBER OF HEAT DISSIPATION DEVICE AND THE HEAT DISSIPATION DEVICE

Abstract

A middle member of heat dissipation device and the heat dissipation device. The middle member includes a middle member main body having a first face, a second face, multiple perforations and a channeled structure. The channeled structure is disposed on the first face or the second face. The perforations are formed through the middle member main body between the first and second faces. The channeled structure and the perforations are arranged in alignment with each other or not in alignment with each other. The middle member and a first plate body and a second plate body are overlapped with each other to form the heat dissipation device. The complex structures disposed on the first and second faces of the middle member main body are able to achieve a stable vapor-liquid circulation effect.

Claims

1. A middle member of heat dissipation device, comprising a middle member main body, the middle member main body having a first face, a second face, multiple perforations and a channeled structure, the channeled structure being disposed on the first face or the second face, the perforations being formed through the middle member main body between the first and second faces, the channeled structure and the perforations being arranged in alignment with each other or not in alignment with each other.

2. The middle member of heat dissipation device as claimed in claim 1, wherein the channeled structure has multiple recesses, the recesses being arranged at intervals and recessed from the first face to the second face, the perforations and the recesses being horizontally arranged not in alignment with each other, at least one communication passage being formed between each two recesses, two ends of the communication passage being serially connected with the recesses.

3. The middle member of heat dissipation device as claimed in claim 1, wherein the channeled structure has multiple bosses, the bosses being arranged in array at intervals, the bosses defining multiple channels therebetween, the perforations and the bosses being horizontally arranged not in alignment with each other or vertically arranged corresponding to each other.

4. The middle member of heat dissipation device as claimed in claim 3, wherein the channels are disposed on the first face in a longitudinal direction of the middle member main body or in a transverse direction of the middle member main body or in both the longitudinal and transverse directions of the middle member main body to intersect each other.

5. The middle member of heat dissipation device as claimed in claim 3, wherein the channels are disposed on the first face in a longitudinal direction or in a transverse direction or in both the longitudinal and transverse directions to intersect each other.

6. The middle member of heat dissipation device as claimed in claim 2, wherein the cross section of the recesses has a geometrical configuration selected from a group consisting of circular, elliptic, quadrangular, rhombic and triangular configuration, the cross section meaning the cross sectional horizontally extending along the first face or the second face of the middle member main body.

7. The middle member of heat dissipation device as claimed in claim 3, wherein the cross section of the bosses has a geometrical configuration selected from a group consisting of circular, elliptic, quadrangular, rhombic and triangular configuration, the cross section meaning the cross sectional horizontally extending along the first face or the second face of the middle member main body.

8. The middle member of heat dissipation device as claimed in claim 1, wherein the middle member main body is made of a material selected from a group consisting of pure titanium, titanium alloy, copper, aluminum, stainless steel, ceramic material, aluminum alloy and copper alloy.

9. The middle member of heat dissipation device as claimed in claim 1, wherein the channeled structure has multiple bosses, the bosses being arranged in array at intervals, the bosses defining multiple channels therebetween, the middle member main body being defined with a first section, a second section and a third section, two ends of the first section being connected with the second and third sections, the intervals between the bosses of the first section being smaller than the intervals between the bosses of the second and third sections, the diameter of the perforations of the first section being smaller than the diameter of the perforations of the second and third sections, the first section being an evaporation section, while the second and third sections being condensation sections.

10. The middle member of heat dissipation device as claimed in claim 9, wherein the volume of the bosses of the first section is smaller than the volume of the bosses of the second and third sections.

11. The middle member of heat dissipation device as claimed in claim 1, wherein the channeled structure is disposed on both the first and second faces of the middle member main body.

12. The middle member of heat dissipation device as claimed in claim 11, wherein the channeled structure is composed of multiple recesses or multiple bosses or multiple recesses and multiple bosses arranged at intervals.

13. The middle member of heat dissipation device as claimed in claim 1, wherein the perforations have multiple connection passages in horizontal direction, the connection passages horizontally extending to connect two adjacent perforations, the connection passages being disposed on any of the first and second faces or both the first and second faces or disposed between the first and second faces of the middle member main body.

14. The middle member of heat dissipation device as claimed in claim 1, wherein the surface of the channeled structure has a nanometer structure layer, the nanometer structure layer being nanometer whisker layer or nanometer carbonized layer or nanometer oxidization layer, the nanometer oxidization layer being copper oxide, titanium oxide or aluminum oxide.

15. A heat dissipation device comprising: a middle member main body, the middle member main body having a first face, a second face, multiple perforations and a channeled structure, the channeled structure being disposed on the first face or the second face, the perforations being formed through the middle member main body between the first and second faces, the channeled structure and the perforations being arranged in alignment with each other or not in alignment with each other; a first plate body having a first surface and a second surface; and a second plate body having a third surface and a fourth surface, the first and third surfaces being correspondingly mated with each other to together define a closed chamber, the middle member main body being disposed in the closed chamber, a working fluid being filled in the closed chamber.

16. The heat dissipation device as claimed in claim 15, wherein the first surface of the first plate body has multiple raised sections, the second surface being formed with multiple depressions in positions opposite to the raised sections, the raised sections being correspondingly attached to the first face of the middle member main body, the third surface of the second plate body being correspondingly attached to the second face of the middle member main body.

17. The heat dissipation device as claimed in claim 15, wherein the first surface of the first plate body has multiple raised sections, the second surface being formed with multiple depressions in positions opposite to the raised sections, the raised sections being correspondingly attached to the second face of the middle member main body, the third surface of the second plate body being correspondingly attached to the first face of the middle member main body.

18. The heat dissipation device as claimed in claim 15, wherein the second surface of the first plate body is defined as a condensation face, at least one section of the first surface being defined as a condensation section, the fourth surface of the second plate body being defined as a heat absorption face, at least one section of the third surface being defined as an evaporation section, the condensation section and the evaporation section being up and down correspondingly arranged.

19. The heat dissipation device as claimed in claim 15, wherein the middle member main body and the first and second plate bodies are made of a material selected from a group consisting of pure titanium, titanium alloy, copper, aluminum, stainless steel and ceramic material.

20. The heat dissipation device as claimed in claim 15, wherein a microstructure is disposed on the third surface of the second plate body, the microstructure being a rough face composed of multiple channels or multiple pits and multiple protrusions or a sintered powder layer or a coating layer, the coating layer being a hydrophobic layer or a hydrophilic layer.

21. The heat dissipation device as claimed in claim 15, wherein the channeled structure is disposed on both the first and second faces of the middle member main body.

22. The heat dissipation device as claimed in claim 15, wherein at least one section of the third surface of the second plate body is defined as an evaporation section and either or both of the left end and the right end of the third surface relative to the evaporation section are defined as condensation ends.

23. The heat dissipation device as claimed in claim 15, wherein the surface of the channeled structure has a nanometer structure layer, the nanometer structure layer being nanometer whisker layer or nanometer carbonized layer or nanometer oxidization layer, the nanometer oxidization layer being copper oxide, titanium oxide or aluminum oxide.

24. The heat dissipation device as claimed in claim 23, wherein the channeled structure is correspondingly attached to the third surface of the second plate body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:

[0015] FIG. 1 is a perspective view of a first embodiment of the middle member of heat dissipation device of the present invention;

[0016] FIG. 2 is a plane view of the first embodiment of the middle member of heat dissipation device of the present invention;

[0017] FIG. 3 is a perspective view of a second embodiment of the middle member of heat dissipation device of the present invention;

[0018] FIG. 4 is another perspective view of the second embodiment of the middle member of heat dissipation device of the present invention;

[0019] FIG. 5 is a perspective view of a third embodiment of the middle member of heat dissipation device of the present invention;

[0020] FIG. 6 is another perspective view of the third embodiment of the middle member of heat dissipation device of the present invention;

[0021] FIG. 7 is a perspective view of a fourth embodiment of the middle member of heat dissipation device of the present invention;

[0022] FIG. 8 is another perspective view of a third embodiment of the middle member of heat dissipation device of the present invention;

[0023] FIG. 8a is another perspective view of a third embodiment of the middle member of heat dissipation device of the present invention;

[0024] FIG. 9 is a sectional view of a first embodiment of the heat dissipation device of the present invention;

[0025] FIG. 10a is a sectional view of a second embodiment of the heat dissipation device of the present invention;

[0026] FIG. 10b is a sectional view of the second embodiment of the heat dissipation device of the present invention;

[0027] FIG. 11a is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention;

[0028] FIG. 11b is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention;

[0029] FIG. 11c is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention;

[0030] FIG. 11d is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention;

[0031] FIG. 12a is a view of a fifth embodiment of the middle member of heat dissipation device of the present invention; and

[0032] FIG. 12b is another view of a fifth embodiment of the middle member of heat dissipation device of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Please refer to FIGS. 1 and 2. FIG. 1 is a perspective view of a first embodiment of the middle member of heat dissipation device of the present invention. FIG. 2 is a plane view of the first embodiment of the middle member of heat dissipation device of the present invention. According to the first embodiment, the middle member of heat dissipation device of the present invention includes a middle member main body 1.

[0034] The middle member main body 1 has a first face 11, a second face 12, multiple perforations 13 and a channeled structure 14. The channeled structure 14 can be disposed on the first face 11, the second face 12 or both the first and second faces 11, 12. In this embodiment, the channeled structure 14 is disposed on the first face 11. The perforations 13 are formed through the middle member main body 1 between the first and second faces 11, 12. The channeled structure 14 and the perforations 13 are arranged in alignment with each other or not in alignment with each other. In this embodiment, the channeled structure 14 and the perforations 13 are, but not limited to, arranged not in alignment with each other for illustration purposes.

[0035] The channeled structure 14 has multiple recesses 141. The recesses 141 are arranged at intervals and recessed from the first face 11 to the second face 12. The perforations 13 and the recesses 141 are horizontally arranged not in alignment with each other or vertically arranged and overlapped with each other. In this embodiment, the perforations 13 and the recesses 141 are, but not limited to, horizontally arranged not in alignment with each other for illustration purposes. The perforations 13 are formed between each four adjacent recesses 141. At least one communication passage 141a is formed between each two recesses 141. Two ends of the communication passage 141a are serially connected with the recesses 141, whereby the recesses 141 are transversely and longitudinally communicated with each other.

[0036] Please now refer to FIGS. 3 and 4. FIG. 3 is a perspective view of a second embodiment of the middle member of heat dissipation device of the present invention. FIG. 4 is another perspective view of the second embodiment of the middle member of heat dissipation device of the present invention. The second embodiment is different from the first embodiment in that the channeled structure 14 has multiple bosses 142. The bosses 142 are arranged in array at intervals. The bosses 142 define multiple channels 143 therebetween. The perforations 13 and the bosses 142 are horizontally arranged in alignment with or not in alignment with each other (or vertically arranged and overlapped with each other). In this embodiment, the perforations 13 and the bosses 142 are, but not limited to, arranged not in alignment with each other for illustration purposes. The channels 143 are disposed on the first face 11 in the longitudinal direction of the middle member main body 1 or in the transverse direction of the middle member main body 1 or in both the longitudinal and transverse directions of the middle member main body 1 to intersect each other.

[0037] Please now refer to FIGS. 5 and 6. FIG. 5 is a perspective view of a third embodiment of the middle member of heat dissipation device of the present invention. FIG. 6 is another perspective view of the third embodiment of the middle member of heat dissipation device of the present invention. The third embodiment is different from the second embodiment in that the middle member main body 1 is defined with a first section 1a, a second section 1b and a third section 1c. Two ends of the first section 1a are connected with the second and third sections 1b, 1c. The width of the channels 143 between the bosses 142 of the first section 1a is smaller than the width of the channels 143 between the bosses 142 of the second and third sections 1b, 1c. (That is, the bosses 142 of the first section 1a are more densely arranged than the bosses 142 of the second and third sections 1b, 1c). The diameter of the perforations 13 of the first section 1a is smaller than the diameter of the perforations 13 of the second and third sections 1b, 1c. The first section 1a is an evaporation section, while the second and third sections 1b, 1c are condensation sections. The volume of the bosses 142 of the first section 1a is smaller than the volume of the bosses 142 of the second and third sections 1b, 1c. Accordingly, the width of the channels 143 of the first section 1a is smaller than the width of the channels 143 of the second and third sections 1b, 1c. (That is, the bosses 142 of the first section 1a are more densely arranged than the bosses 142 of the second and third sections 1b, 1c).

[0038] Please now refer to FIGS. 7, 8 and 8a. FIG. 7 is a perspective view of a fourth embodiment of the middle member of heat dissipation device of the present invention. FIG. 8 is another perspective view of a third embodiment of the middle member of heat dissipation device of the present invention. FIG. 8a is another perspective view of a third embodiment of the middle member of heat dissipation device of the present invention. The fourth embodiment is different from the first embodiment in that the first and second faces 11, 12 of the middle member main body 1 are both formed with channeled structures 14. The channeled structures 14 can be multiple recesses 141 or multiple bosses 142 or a combination of multiple recesses 141 and multiple bosses 142. In this embodiment, the channeled structures 14 are, but not limited to, multiple bosses 142 for illustration purposes. In a modified embodiment, the channeled structures 14 are a combination of multiple bosses 142 and multiple perforations 13, which are irregularly randomly arranged. The configuration and the size of the bosses 142 and the perforations 13 are not specifically limited (as shown in FIG. 8a).

[0039] In the above embodiments, the cross section of the recesses 141 or the bosses 142 has, but not limited to, a geometrical configuration selected from a group consisting of circular, elliptic, quadrangular, rhombic and triangular configuration. The cross section means the cross-sectional shape horizontally extending along the first face 11 or the second face 12 of the middle member main body 1. The middle member main body 1 is made of a material selected from a group consisting of pure titanium, titanium alloy, copper, aluminum, stainless steel, ceramic material, aluminum alloy and copper alloy.

[0040] Please now refer to FIG. 9, which is a sectional view of a first embodiment of the heat dissipation device of the present invention. According to the first embodiment, the heat dissipation device of the present invention includes a middle member main body 1, a first plate body 2 and a second plate body 3.

[0041] The middle member main body 1 has a first face 11, a second face 12, multiple perforations 13 and a channeled structure 14. The channeled structure 14 is disposed on the first face 11 or the second face 12. The perforations 13 are formed through the middle member main body 1 between the first and second faces 11, 12. The channeled structure 14 and the perforations 13 are arranged in alignment with each other or not in alignment with each other or vertically arranged and overlapped with each other.

[0042] The first plate body 2 has a first surface 21 and a second surface 22. The second plate body 3 has a third surface 31 and a fourth surface 32. The first and third surfaces 21, 31 are correspondingly mated with each other to together define a closed chamber 33. The middle member main body 1 is disposed in the closed chamber 33. A working fluid 4 is filled in the closed chamber 33.

[0043] In this embodiment, the channeled structure 14 of the middle member main body 1 is composed of multiple recesses 141 or multiple bosses 142. The channeled structure 14 can be selectively disposed on the first face 11, the second face 12 or both the first and second faces 11, 12. In this embodiment, the channeled structure 14 is, but not limited to, only disposed on the second face 12 and the channeled structure 14 is, but not limited to, composed of multiple bosses 142 for illustration purposes. The first surface 21 of the first plate body 2 has multiple raised sections 211. The second surface 22 is formed with multiple depressions in positions opposite to the raised sections 211. The raised sections 211 are correspondingly attached to the second face 12 of the middle member main body 1. The third surface 31 of the second plate body 3 is correspondingly attached to the first face 11 of the middle member main body 1.

[0044] Please now refer to FIGS. 10a and 10b, which are two sectional view of a second embodiment of the heat dissipation device of the present invention. The second embodiment is different from the first embodiment in that the raised sections 211 of the first plate body 2 are correspondingly attached to the first face 11 of the middle member main body 1, while the third surface 31 of the second plate body 3 is correspondingly attached to the second face 12 of the middle member main body 1.

[0045] In the first and second embodiments of the heat dissipation device of the present invention, the second surface 22 of the first plate body 2 is defined as a condensation face capable of providing condensation effect. At least one section of the first surface 21 is defined as a condensation section 21a. The fourth surface 32 of the second plate body 3 is defined as a heat absorption face 32a capable of absorbing heat. At least one section of the third surface 31 is defined as an evaporation section 31a. In this embodiment, the condensation section 21a and the evaporation section 31a are up and down correspondingly arranged.

[0046] The middle member main body 1 and the first and second plate bodies 2, 3 are made of a material selected from a group consisting of pure titanium, titanium alloy, copper, aluminum, stainless steel, ceramic material and any combination of the aforesaid materials.

[0047] Please now refer to FIG. 10b. In a modified embodiment, the channeled structure 14 is disposed on the first face 11 of the middle member main body 1. The surface of the channeled structure 14 has a nanometer structure layer 144. The nanometer structure layer 144 is nanometer whisker layer or nanometer carbonized layer or nanometer oxidization layer. The nanometer oxidization layer is copper oxide, titanium oxide or aluminum oxide. The channeled structure 14 is correspondingly attached to the third surface 31 of the second plate body 3. The nanometer structure layer 144 serves to enhance the backflow or water sucking ability of the whole capillary structure.

[0048] Please now refer to FIGS. 11a, 11b, 11c and 11d. In the first and second embodiments of the heat dissipation device of the present invention, a microstructure 34 is disposed on the third surface 31 of the second plate body 3. The microstructure 34 is, but not limited to, a rough face composed of multiple channels (as shown in FIG. 11a) or multiple pits and multiple protrusions (as shown in FIG. 11b) or a sintered powder layer (as shown in FIG. 11c) or a coating layer (as shown in FIG. 11d) or a complex structure of any combination thereof. The microstructure 34 serves to increase the water content so as to enhance the efficiency of vapor-liquid circulation. The coating layer is a hydrophobic layer or a hydrophilic layer. Certainly, a microstructure as the microstructure 34 of the second plate body 3 can be also disposed on the first surface 21 of the first plate body 2.

[0049] In this embodiment, the microstructure 34 is composed of multiple micro-channels for illustration purposes. The middle of the third surface 31 of the second plate body 3 is, but not limited to, defined as an evaporation section 23. Either or both of the left end and the right end of the third surface 31 of the second plate body 3 relative to the evaporation section 23 are, but not limited to, defined as condensation ends 24, 25. Certainly, the left end can be alternatively defined as the evaporation section 23, while the right end can be alternatively defined as a condensation end.

[0050] In this embodiment, the intervals between the micro-channels 341 disposed on the evaporation section 23 are smaller and the micro-channels 341 are more densely arranged, while the micro-channels 341 disposed on the condensation ends 24, 25 are more sparsely arranged.

[0051] In the case that a coating layer is disposed on the second plate body 2, the coating layer disposed on the evaporation section 23 is selectively a hydrophilic coating layer, while the coating layer disposed on the condensation ends 24, 25 are selectively hydrophobic coating layers.

[0052] The microstructure 34 (coating layers or micro-channels) mainly serves to enhance the water sucking force to help in increasing the water content of the evaporation section 23 so as to avoid dry burn. The micro-channels 341 are diverged from the middle to the two condensation ends 24, 25 so that the intervals between the micro-channels 341 at the condensation ends 24, 25 are larger, that is, the micro-channels 341 at the condensation ends 24, 25 are more sparsely arranged. Accordingly, the pressure impedance of the condensation ends 24, 25 is reduced to enhance the condensation diffusion efficiency.

[0053] Please now refer to FIGS. 12a and 12b. FIG. 12a is a view of a fifth embodiment of the middle member of heat dissipation device of the present invention. FIG. 12b is another view of a fifth embodiment of the middle member of heat dissipation device of the present invention. The fifth embodiment is different from the first embodiment in that the perforations 13 have multiple connection passages 131 in horizontal direction. The connection passages 131 horizontally extend to connect two adjacent perforations 13 in a linear form, a curve form or an irregular form. The connection passages 131 are disposed on any of the first and second faces 11, 12 or both the first and second faces 11, 12. In this embodiment, the connection passages 131 are, but not limited to, disposed on the second face 12 (as shown in FIG. 12a) or disposed between the first and second faces 11, 12 of the middle member main body 1 (as shown in FIG. 12b) for illustration purposes. The connection passages 131 permit the perforations 13 to also communicate with each other in horizontal direction. That is, when the working fluid 4 is converted into vapor phase, the working fluid 4 not only can spread in vertical direction, but also can spread in horizontal direction.

[0054] In the present invention, the channeled structure 14 is disposed on one face or both faces of the plate-shaped middle member main body 1. In addition, the middle member main body 1 is formed with the perforations 13. The channeled structure 14 is for the working fluid 4 to flow back, while the perforations 13 serve as the passage of the evaporated working fluid 4. When the heat dissipation device is thinned, the space of the internal closed chamber is narrowed so that it is hard to dispose the capillary structure in the chamber. The plate-shaped middle member main body 1 of the present invention solves this problem. In addition, the plate-shaped middle member main body 1 is uneasy to warp so that the middle member main body 1 can be used without sintering and fixing. The complex structure of the middle member main body 1 has both the vapor circulation passage and the capillary structure for the liquid to flow back on one single layer of substrate. This overcomes the shortcoming that some metal materials such as titanium are uneasy to process into special capillary structure such as woven mesh. Also, the necessary capillary structure can be quickly manufactured. Therefore, the problem of the selection of material is solved and the manufacturing time is shortened to greatly lower the manufacturing cost.

[0055] Moreover, the middle member main body 1 can serve as a support, whereby after thinned, the closed chamber can keep complete without being deformed under compression to lose the vapor-liquid circulation effect.

[0056] Furthermore, the plate-shaped middle member main body 1 of the present invention can solely provide three-dimensional vapor-liquid circulation passages in axial direction and radial direction without the limitation of a narrow space. Therefore, the working fluid can keep having three-dimensional flowing space to ensure that the vapor-liquid circulation is successfully continuously performed. In the capillary structure of the present invention, the liquid can flow through the channels 143, while the vapor is produced at the semilunar membrane of the surface of the perforation 13 and diffused within the closed chamber 33 to form a vapor-liquid separation heat transfer structure.

[0057] The present invention has been described with the above embodiments thereof and it is understood that many changes and modifications in such as the form or layout pattern or practicing step of the above embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.