US20190285357A1 - Middle member of heat dissipation device and the heat dissipation device - Google Patents
Middle member of heat dissipation device and the heat dissipation device Download PDFInfo
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- US20190285357A1 US20190285357A1 US15/925,704 US201815925704A US2019285357A1 US 20190285357 A1 US20190285357 A1 US 20190285357A1 US 201815925704 A US201815925704 A US 201815925704A US 2019285357 A1 US2019285357 A1 US 2019285357A1
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- Prior art keywords
- middle member
- heat dissipation
- dissipation device
- face
- main body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/14—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by endowing the walls of conduits with zones of different degrees of conduction of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2225/00—Reinforcing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2240/00—Spacing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/18—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes sintered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
Definitions
- the present invention relates generally to a middle member of heat dissipation device and the heat dissipation device, and more particularly to a middle member of heat dissipation device and the heat dissipation device, which includes one single plate of middle member main body having a first face and a second face.
- Complex surface structures are disposed on the first face or the second face or both the first and second faces of the middle member main body to enhance the capillary attraction.
- heat dissipation devices there are various heat dissipation devices. Some of the heat dissipation devices transfer and dissipate heat by way of vapor-liquid circulation, such as heat pipe and vapor chamber. When applied to a device with a narrow space, such as a mobile phone or an intelligent watch, the entire structures of the heat pipe and the vapor chamber must be thinned in adaptation to the narrow space of the device.
- Either of the heat pipe and the vapor chamber has an internal vacuumed chamber.
- a capillary structure is disposed in the vacuumed chamber and a working fluid is contained in the vacuumed chamber.
- the liquid working fluid in the vacuumed chamber is evaporated into vapor.
- the vapor working fluid is then condensed into liquid working fluid. Accordingly, the working fluid is changed between vapor phase and liquid phase to transfer the heat. Therefore, the vapor passage for the evaporated working fluid to diffuse and the capillary structure for the condensed working fluid to flow back are critical in the design of the thinned heat pipe and vapor chamber.
- the space of the vacuumed chamber will be inevitably narrowed.
- the structural strength of the capillary structure and the external plate bodies will be affected. All these issues have become the most important problems needing to be solved.
- the vapor chamber and heat pipe are most often made of copper material. Copper has the properties of fast heat conduction and high ductility and malleability. Therefore, a thinned copper plate or copper tube is apt to deform. After deformed, the vacuumed chamber of the vapor chamber and heat pipe is compressed, narrowed or collapsed. As a result, the working fluid filled in the vacuumed chamber will be impossible to perform vapor-liquid circulation work to transfer the heat.
- the space of the vacuumed chamber is minified. Under such circumstance, it is a critical issue how to select a capillary structure disposed in the vacuumed chamber. It is harder for the sintered powder to dispose in the narrow space. Therefore, some manufacturers select thin mesh body as the capillary structure instead of the sintered powder. However, it is still necessary to sinter the thin mesh body with the wall of the external plate body or tube body so as to prevent the mesh body from warping or sliding within the chamber. In the narrow vacuumed chamber, it is quite hard to sinter the capillary structure with the wall of the chamber. Moreover, after sintered, it often takes place that the vapor passage is blocked.
- the conventional capillary structure disposed in the narrow space such as sintered powder or woven mesh body will fail to effectively control the flow distribution of the liquid in three-dimensional directions (axial direction and radial direction).
- the vapor cannot leave the capillary structure.
- the resistance against the vapor and the liquid cannot be reduced. This will interrupt the vapor-liquid circulation and the heat of the heat source in contact with the vapor chamber or heat pipe cannot be successfully conducted and dissipated to cause heat crash or burnout of the chip.
- the conventional capillary structure such as the sintered powder or woven mesh body cannot set up a vapor-liquid separation heat flow structure. In the vapor chamber, the flow direction of the vapor is reverse to the flow direction of the liquid so that a splash phenomenon between the vapor and the liquid often takes place to increase the resistance against the vapor and the liquid.
- 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 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 first plate body has a first surface and a second surface.
- the second plate body has a third surface and a fourth surface.
- the first and third surfaces are correspondingly mated with each other to together define a closed chamber.
- the middle member main body is disposed in the closed chamber and a working fluid is filled in the closed chamber.
- one single thin sheet of middle member main body is disposed between the first and second plate bodies.
- the channeled structure is disposed on one face or both faces of the middle member main body.
- the channeled structure and the perforations are arranged in alignment with each other or not in alignment with each other.
- the middle member main body provides a complex capillary structure for vapor-liquid circulation of the working fluid.
- the middle member main body serves as a support structure integrated with the capillary structure.
- 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
- 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.
- 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.
- 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. 8 a is another perspective view of a third embodiment of the middle member of heat dissipation device of the present invention.
- FIG. 9 is a sectional view of a first embodiment of the heat dissipation device of the present invention.
- FIG. 10 a is a sectional view of a second embodiment of the heat dissipation device of the present invention.
- FIG. 10 b is a sectional view of the second embodiment of the heat dissipation device of the present invention.
- FIG. 11 a is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention.
- FIG. 11 b is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention.
- FIG. 11 c is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention.
- FIG. 11 d is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention.
- FIG. 12 a is a view of a fifth embodiment of the middle member of heat dissipation device of the present invention.
- FIG. 12 b is another view of a fifth embodiment of the middle member of heat dissipation device of the present invention.
- 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.
- the middle member of heat dissipation device of the present invention includes a middle member main body 1 .
- 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.
- 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 141 a is formed between each two recesses 141 . Two ends of the communication passage 141 a are serially connected with the recesses 141 , whereby the recesses 141 are transversely and longitudinally communicated with each other.
- 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).
- 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.
- 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 1 a, a second section 1 b and a third section 1 c. Two ends of the first section 1 a are connected with the second and third sections 1 b, 1 c.
- the width of the channels 143 between the bosses 142 of the first section 1 a is smaller than the width of the channels 143 between the bosses 142 of the second and third sections 1 b, 1 c.
- the diameter of the perforations 13 of the first section 1 a is smaller than the diameter of the perforations 13 of the second and third sections 1 b, 1 c.
- the first section 1 a is an evaporation section, while the second and third sections 1 b, 1 c are condensation sections.
- the volume of the bosses 142 of the first section 1 a is smaller than the volume of the bosses 142 of the second and third sections 1 b, 1 c.
- the width of the channels 143 of the first section 1 a is smaller than the width of the channels 143 of the second and third sections 1 b, 1 c. (That is, the bosses 142 of the first section 1 a are more densely arranged than the bosses 142 of the second and third sections 1 b, 1 c ).
- 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. 8 a 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 .
- the channeled structures 14 are, but not limited to, multiple bosses 142 for illustration purposes.
- 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. 8 a ).
- 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.
- 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 .
- 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.
- 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 .
- 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 .
- 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 .
- FIGS. 10 a and 10 b 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 .
- 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 21 a.
- the fourth surface 32 of the second plate body 3 is defined as a heat absorption face 32 a capable of absorbing heat. At least one section of the third surface 31 is defined as an evaporation section 31 a.
- the condensation section 21 a and the evaporation section 31 a are up and down correspondingly arranged.
- 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.
- 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.
- 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. 11 a ) or multiple pits and multiple protrusions (as shown in FIG. 11 b ) or a sintered powder layer (as shown in FIG. 11 c ) or a coating layer (as shown in FIG. 11 d ) 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.
- 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 .
- 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 .
- the left end can be alternatively defined as the evaporation section 23
- the right end can be alternatively defined as a condensation end.
- 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.
- 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.
- 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.
- FIG. 12 a is a view of a fifth embodiment of the middle member of heat dissipation device of the present invention.
- FIG. 12 b 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 .
- connection passages 131 are, but not limited to, disposed on the second face 12 (as shown in FIG. 12 a ) or disposed between the first and second faces 11 , 12 of the middle member main body 1 (as shown in FIG. 12 b ) 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.
- the channeled structure 14 is disposed on one face or both faces of the plate-shaped middle member main body 1 .
- 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 .
- 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.
- 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.
- 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.
- 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.
- 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.
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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.
Description
- The present invention relates generally to a middle member of heat dissipation device and the heat dissipation device, and more particularly to a middle member of heat dissipation device and the heat dissipation device, which includes one single plate of middle member main body having a first face and a second face. Complex surface structures are disposed on the first face or the second face or both the first and second faces of the middle member main body to enhance the capillary attraction.
- Currently, there are various heat dissipation devices. Some of the heat dissipation devices transfer and dissipate heat by way of vapor-liquid circulation, such as heat pipe and vapor chamber. When applied to a device with a narrow space, such as a mobile phone or an intelligent watch, the entire structures of the heat pipe and the vapor chamber must be thinned in adaptation to the narrow space of the device.
- Either of the heat pipe and the vapor chamber has an internal vacuumed chamber. A capillary structure is disposed in the vacuumed chamber and a working fluid is contained in the vacuumed chamber. When heated, the liquid working fluid in the vacuumed chamber is evaporated into vapor. The vapor working fluid is then condensed into liquid working fluid. Accordingly, the working fluid is changed between vapor phase and liquid phase to transfer the heat. Therefore, the vapor passage for the evaporated working fluid to diffuse and the capillary structure for the condensed working fluid to flow back are critical in the design of the thinned heat pipe and vapor chamber. However, when thinning the heat pipe and vapor chamber, the space of the vacuumed chamber will be inevitably narrowed. Also, the structural strength of the capillary structure and the external plate bodies will be affected. All these issues have become the most important problems needing to be solved.
- The vapor chamber and heat pipe are most often made of copper material. Copper has the properties of fast heat conduction and high ductility and malleability. Therefore, a thinned copper plate or copper tube is apt to deform. After deformed, the vacuumed chamber of the vapor chamber and heat pipe is compressed, narrowed or collapsed. As a result, the working fluid filled in the vacuumed chamber will be impossible to perform vapor-liquid circulation work to transfer the heat.
- Moreover, after thinned, the space of the vacuumed chamber is minified. Under such circumstance, it is a critical issue how to select a capillary structure disposed in the vacuumed chamber. It is harder for the sintered powder to dispose in the narrow space. Therefore, some manufacturers select thin mesh body as the capillary structure instead of the sintered powder. However, it is still necessary to sinter the thin mesh body with the wall of the external plate body or tube body so as to prevent the mesh body from warping or sliding within the chamber. In the narrow vacuumed chamber, it is quite hard to sinter the capillary structure with the wall of the chamber. Moreover, after sintered, it often takes place that the vapor passage is blocked.
- Furthermore, after compressed and deformed, the conventional capillary structure disposed in the narrow space, such as sintered powder or woven mesh body will fail to effectively control the flow distribution of the liquid in three-dimensional directions (axial direction and radial direction). Also, the vapor cannot leave the capillary structure. As a result, the resistance against the vapor and the liquid cannot be reduced. This will interrupt the vapor-liquid circulation and the heat of the heat source in contact with the vapor chamber or heat pipe cannot be successfully conducted and dissipated to cause heat crash or burnout of the chip. In addition, the conventional capillary structure such as the sintered powder or woven mesh body cannot set up a vapor-liquid separation heat flow structure. In the vapor chamber, the flow direction of the vapor is reverse to the flow direction of the liquid so that a splash phenomenon between the vapor and the liquid often takes place to increase the resistance against the vapor and the liquid.
- It is therefore tried by the applicant to provide a middle member of heat dissipation device and the heat dissipation device to solve the above problems existing in the conventional thinned heat dissipation device.
- It is therefore a primary object of the present invention to provide a middle member of heat dissipation device, which has a thin capillary structure with better capillary attraction.
- 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.
- It is a further object of the present invention to provide a heat dissipation device including a middle member, a first plate body and a second plate body.
- 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 first plate body has a first surface and a second surface. The second plate body has a third surface and a fourth surface. The first and third surfaces are correspondingly mated with each other to together define a closed chamber. The middle member main body is disposed in the closed chamber and a working fluid is filled in the closed chamber.
- According to the above arrangement, one single thin sheet of middle member main body is disposed between the first and second plate bodies. The channeled structure is disposed on one face or both faces of the middle member main body. The channeled structure and the perforations are arranged in alignment with each other or not in alignment with each other. The middle member main body provides a complex capillary structure for vapor-liquid circulation of the working fluid. In addition, the middle member main body serves as a support structure integrated with the capillary structure.
- 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:
-
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; -
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; -
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; -
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; -
FIG. 9 is a sectional view of a first embodiment of the heat dissipation device of the present invention; -
FIG. 10a is a sectional view of a second embodiment of the heat dissipation device of the present invention; -
FIG. 10b is a sectional view of the second embodiment of the heat dissipation device of the present invention; -
FIG. 11a is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention; -
FIG. 11b is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention; -
FIG. 11c is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention; -
FIG. 11d is a view showing the microstructure of the second plate body of the heat dissipation device of the present invention; -
FIG. 12a is a view of a fifth embodiment of the middle member of heat dissipation device of the present invention; and -
FIG. 12b is another view of a fifth embodiment of the middle member of heat dissipation device of the present invention. - 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 membermain body 1. - The middle member
main body 1 has afirst face 11, asecond face 12,multiple perforations 13 and a channeledstructure 14. The channeledstructure 14 can be disposed on thefirst face 11, thesecond face 12 or both the first and second faces 11, 12. In this embodiment, the channeledstructure 14 is disposed on thefirst face 11. Theperforations 13 are formed through the middle membermain body 1 between the first and second faces 11, 12. The channeledstructure 14 and theperforations 13 are arranged in alignment with each other or not in alignment with each other. In this embodiment, the channeledstructure 14 and theperforations 13 are, but not limited to, arranged not in alignment with each other for illustration purposes. - The channeled
structure 14 hasmultiple recesses 141. Therecesses 141 are arranged at intervals and recessed from thefirst face 11 to thesecond face 12. Theperforations 13 and therecesses 141 are horizontally arranged not in alignment with each other or vertically arranged and overlapped with each other. In this embodiment, theperforations 13 and therecesses 141 are, but not limited to, horizontally arranged not in alignment with each other for illustration purposes. Theperforations 13 are formed between each fouradjacent recesses 141. At least onecommunication passage 141 a is formed between each two recesses 141. Two ends of thecommunication passage 141 a are serially connected with therecesses 141, whereby therecesses 141 are transversely and longitudinally communicated with each other. - 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 channeledstructure 14 hasmultiple bosses 142. Thebosses 142 are arranged in array at intervals. Thebosses 142 definemultiple channels 143 therebetween. Theperforations 13 and thebosses 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, theperforations 13 and thebosses 142 are, but not limited to, arranged not in alignment with each other for illustration purposes. Thechannels 143 are disposed on thefirst face 11 in the longitudinal direction of the middle membermain body 1 or in the transverse direction of the middle membermain body 1 or in both the longitudinal and transverse directions of the middle membermain body 1 to intersect each other. - 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 membermain body 1 is defined with a first section 1 a, a second section 1 b and a third section 1 c. Two ends of the first section 1 a are connected with the second and third sections 1 b, 1 c. The width of thechannels 143 between thebosses 142 of the first section 1 a is smaller than the width of thechannels 143 between thebosses 142 of the second and third sections 1 b, 1 c. (That is, thebosses 142 of the first section 1 a are more densely arranged than thebosses 142 of the second and third sections 1 b, 1 c). The diameter of theperforations 13 of the first section 1 a is smaller than the diameter of theperforations 13 of the second and third sections 1 b, 1 c. The first section 1 a is an evaporation section, while the second and third sections 1 b, 1 c are condensation sections. The volume of thebosses 142 of the first section 1 a is smaller than the volume of thebosses 142 of the second and third sections 1 b, 1 c. Accordingly, the width of thechannels 143 of the first section 1 a is smaller than the width of thechannels 143 of the second and third sections 1 b, 1 c. (That is, thebosses 142 of the first section 1 a are more densely arranged than thebosses 142 of the second and third sections 1 b, 1 c). - Please now refer to
FIGS. 7, 8 and 8 a.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 membermain body 1 are both formed with channeledstructures 14. The channeledstructures 14 can bemultiple recesses 141 ormultiple bosses 142 or a combination ofmultiple recesses 141 andmultiple bosses 142. In this embodiment, the channeledstructures 14 are, but not limited to,multiple bosses 142 for illustration purposes. In a modified embodiment, the channeledstructures 14 are a combination ofmultiple bosses 142 andmultiple perforations 13, which are irregularly randomly arranged. The configuration and the size of thebosses 142 and theperforations 13 are not specifically limited (as shown inFIG. 8a ). - In the above embodiments, the cross section of the
recesses 141 or thebosses 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 thefirst face 11 or thesecond face 12 of the middle membermain body 1. The middle membermain 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. - 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 membermain body 1, afirst plate body 2 and asecond plate body 3. - The middle member
main body 1 has afirst face 11, asecond face 12,multiple perforations 13 and a channeledstructure 14. The channeledstructure 14 is disposed on thefirst face 11 or thesecond face 12. Theperforations 13 are formed through the middle membermain body 1 between the first and second faces 11, 12. The channeledstructure 14 and theperforations 13 are arranged in alignment with each other or not in alignment with each other or vertically arranged and overlapped with each other. - The
first plate body 2 has afirst surface 21 and asecond surface 22. Thesecond plate body 3 has athird surface 31 and afourth surface 32. The first andthird surfaces closed chamber 33. The middle membermain body 1 is disposed in theclosed chamber 33. A workingfluid 4 is filled in theclosed chamber 33. - In this embodiment, the channeled
structure 14 of the middle membermain body 1 is composed ofmultiple recesses 141 ormultiple bosses 142. The channeledstructure 14 can be selectively disposed on thefirst face 11, thesecond face 12 or both the first and second faces 11, 12. In this embodiment, the channeledstructure 14 is, but not limited to, only disposed on thesecond face 12 and the channeledstructure 14 is, but not limited to, composed ofmultiple bosses 142 for illustration purposes. Thefirst surface 21 of thefirst plate body 2 has multiple raisedsections 211. Thesecond surface 22 is formed with multiple depressions in positions opposite to the raisedsections 211. The raisedsections 211 are correspondingly attached to thesecond face 12 of the middle membermain body 1. Thethird surface 31 of thesecond plate body 3 is correspondingly attached to thefirst face 11 of the middle membermain body 1. - 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 raisedsections 211 of thefirst plate body 2 are correspondingly attached to thefirst face 11 of the middle membermain body 1, while thethird surface 31 of thesecond plate body 3 is correspondingly attached to thesecond face 12 of the middle membermain body 1. - In the first and second embodiments of the heat dissipation device of the present invention, the
second surface 22 of thefirst plate body 2 is defined as a condensation face capable of providing condensation effect. At least one section of thefirst surface 21 is defined as acondensation section 21 a. Thefourth surface 32 of thesecond plate body 3 is defined as a heat absorption face 32 a capable of absorbing heat. At least one section of thethird surface 31 is defined as anevaporation section 31 a. In this embodiment, thecondensation section 21 a and theevaporation section 31 a are up and down correspondingly arranged. - The middle member
main body 1 and the first andsecond plate bodies - Please now refer to
FIG. 10b . In a modified embodiment, the channeledstructure 14 is disposed on thefirst face 11 of the middle membermain body 1. The surface of the channeledstructure 14 has ananometer structure layer 144. Thenanometer 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 channeledstructure 14 is correspondingly attached to thethird surface 31 of thesecond plate body 3. Thenanometer structure layer 144 serves to enhance the backflow or water sucking ability of the whole capillary structure. - 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, amicrostructure 34 is disposed on thethird surface 31 of thesecond plate body 3. Themicrostructure 34 is, but not limited to, a rough face composed of multiple channels (as shown inFIG. 11a ) or multiple pits and multiple protrusions (as shown inFIG. 11b ) or a sintered powder layer (as shown inFIG. 11c ) or a coating layer (as shown inFIG. 11d ) or a complex structure of any combination thereof. Themicrostructure 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 themicrostructure 34 of thesecond plate body 3 can be also disposed on thefirst surface 21 of thefirst plate body 2. - In this embodiment, the
microstructure 34 is composed of multiple micro-channels for illustration purposes. The middle of thethird surface 31 of thesecond plate body 3 is, but not limited to, defined as anevaporation section 23. Either or both of the left end and the right end of thethird surface 31 of thesecond plate body 3 relative to theevaporation section 23 are, but not limited to, defined as condensation ends 24, 25. Certainly, the left end can be alternatively defined as theevaporation section 23, while the right end can be alternatively defined as a condensation end. - 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. - In the case that a coating layer is disposed on the
second plate body 2, the coating layer disposed on theevaporation section 23 is selectively a hydrophilic coating layer, while the coating layer disposed on the condensation ends 24, 25 are selectively hydrophobic coating layers. - 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. - 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 theperforations 13 havemultiple connection passages 131 in horizontal direction. Theconnection passages 131 horizontally extend to connect twoadjacent perforations 13 in a linear form, a curve form or an irregular form. Theconnection 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, theconnection passages 131 are, but not limited to, disposed on the second face 12 (as shown inFIG. 12a ) or disposed between the first and second faces 11, 12 of the middle member main body 1 (as shown inFIG. 12b ) for illustration purposes. Theconnection passages 131 permit theperforations 13 to also communicate with each other in horizontal direction. That is, when the workingfluid 4 is converted into vapor phase, the workingfluid 4 not only can spread in vertical direction, but also can spread in horizontal direction. - In the present invention, the channeled
structure 14 is disposed on one face or both faces of the plate-shaped middle membermain body 1. In addition, the middle membermain body 1 is formed with theperforations 13. The channeledstructure 14 is for the workingfluid 4 to flow back, while theperforations 13 serve as the passage of the evaporated workingfluid 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 membermain body 1 of the present invention solves this problem. In addition, the plate-shaped middle membermain body 1 is uneasy to warp so that the middle membermain body 1 can be used without sintering and fixing. The complex structure of the middle membermain 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. - 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. - 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 thechannels 143, while the vapor is produced at the semilunar membrane of the surface of theperforation 13 and diffused within theclosed chamber 33 to form a vapor-liquid separation heat transfer structure. - 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.
Claims (24)
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.
Priority Applications (2)
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US15/925,704 US20190285357A1 (en) | 2018-03-19 | 2018-03-19 | Middle member of heat dissipation device and the heat dissipation device |
US16/150,285 US11131508B2 (en) | 2018-03-19 | 2018-10-03 | Middle member of heat dissipation device and the heat dissipation device |
Applications Claiming Priority (1)
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US15/925,704 US20190285357A1 (en) | 2018-03-19 | 2018-03-19 | Middle member of heat dissipation device and the heat dissipation device |
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US16/150,285 Continuation-In-Part US11131508B2 (en) | 2018-03-19 | 2018-10-03 | Middle member of heat dissipation device and the heat dissipation device |
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US20190285357A1 true US20190285357A1 (en) | 2019-09-19 |
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US15/925,704 Abandoned US20190285357A1 (en) | 2018-03-19 | 2018-03-19 | Middle member of heat dissipation device and the heat dissipation device |
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US20220178626A1 (en) * | 2019-05-14 | 2022-06-09 | Holo, Inc. | Devices, systems and methods for thermal management |
US11013145B1 (en) | 2020-05-15 | 2021-05-18 | Murata Manufacturing Co., Ltd. | Vapor chamber |
US11473850B2 (en) | 2020-05-15 | 2022-10-18 | Murata Manufacturing Co., Ltd. | Vapor chamber |
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WO2022066806A1 (en) * | 2020-09-23 | 2022-03-31 | The Board Of Trustees Of The University Of Illinois | Vapor chambers featuring wettability-patterned surfaces |
US20230152043A1 (en) * | 2021-01-06 | 2023-05-18 | Asia Vital Components Co., Ltd. | Vapor chamber structure |
US11761710B2 (en) * | 2021-01-06 | 2023-09-19 | Asia Vital Components Co., Ltd. | Vapor chamber structure |
CN114791237A (en) * | 2021-01-26 | 2022-07-26 | 山东大学 | Loop heat pipe |
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