CN108716871B - Heat dissipation element and manufacturing method thereof - Google Patents
Heat dissipation element and manufacturing method thereof Download PDFInfo
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- CN108716871B CN108716871B CN201810747281.5A CN201810747281A CN108716871B CN 108716871 B CN108716871 B CN 108716871B CN 201810747281 A CN201810747281 A CN 201810747281A CN 108716871 B CN108716871 B CN 108716871B
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- metal plate
- plate body
- dissipating component
- resistance wheel
- heat
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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
Abstract
The invention provides a heat radiating element and a manufacturing method thereof, wherein the heat radiating element is provided with a body, the body is provided with a first metal plate body and a second metal plate body which jointly define a cavity, a capillary structure layer is arranged in the cavity and filled with working liquid, the outer edge of the cavity of the body is provided with a lip, the lip is provided with a sintering welding part which is vertically connected with the first metal plate body and the second metal plate body, and the manufacturing method of the heat radiating element is used for directly and vertically welding and combining the first metal plate body and the second metal plate body through resistance wheel welding so as to improve the combination degree and the tightness of the first metal plate body and the second metal plate body after welding.
Description
Technical Field
The present invention relates to a heat dissipation device and a method for manufacturing the same, and more particularly, to a heat dissipation device and a method for manufacturing the same, which can improve the bonding strength and the sealing property of the heat dissipation device.
Background
The temperature equalizing plate and the flat plate type heat pipe are made of metal materials such as copper, aluminum, stainless steel and the like, wherein the temperature equalizing plate and the flat plate type heat pipe are most commonly used, and the copper has high heat conduction property, so the temperature equalizing plate and the flat plate type heat pipe are most commonly used.
Most vapor chambers and flat heat pipes work by edge sealing mainly by Diffusion Bonding and Brazing (Brazing) which are suitable for most materials, but not for Diffusion Bonding if two dissimilar materials are combined, such as copper and aluminum or copper and stainless steel.
The spot welding has the disadvantages that although continuous processing is available, the edge sealing cannot be completely sealed, and if the spot welding is used for the edge sealing of the temperature equalizing plate, the vacuum degree of the inner cavity cannot be maintained, and the working liquid is easy to leak due to poor tightness, so that the heat conduction effect is lost.
There are also manufacturers who perform the welding joint by using the resistance wheel welding method, and the current resistance wheel welding uniform temperature plate or flat heat pipe is mainly formed by overlapping an upper plate 3a (with a smaller surface area) and a lower plate 3b (with a larger surface area), then, resistance wheel welding (fill Weld) is performed at the right-angle corner position where the upper and lower plates 3a, 3b overlap and overlap (as shown in fig. 1, 1 a), although resistance wheel welding can provide welding and combining of the upper and lower plates 3a, 3b with different sizes, however, the welding method and material joint of the conventional resistance wheel welding still have disadvantages, such as that the upper plate 3a is selected to be smaller than the lower plate 3b in order to form the vertical corner portion for welding the upper and lower plates 3a, 3b, so that the upper and lower plates 3a, 3b must be accurately aligned, and even a special jig must be used to position the upper and lower plates 3a, 3 b.
Moreover, when the welding path of resistance wheel welding meets a fillet, the path is gradually modified into an arc from a straight line, and a plurality of short straight lines are adopted to be spliced into an arc path, so that the welding position of the resistance wheel welding is repeated or the residence time is prolonged, the materials are excessively fused, even the materials are damaged to a capillary structure inside a uniform temperature plate or a flat plate heat pipe, or an internal cavity is reduced, and the like, and in order to form the vertical corner position for welding, the upper plate 3a and the lower plate 3b with different shapes and sizes are required to be selected, so that the lip edge of the outer edge of the lower plate 3b is easy to generate redundant and invalid lip edges, and the defect of material waste is formed.
The prior art has the following disadvantages:
1. material waste;
2. poor sealing performance;
3. additional positioning is necessary;
4. the dissimilar materials are not easily bonded.
Disclosure of Invention
Accordingly, to overcome the above-mentioned shortcomings of the prior art, it is a primary object of the present invention to provide a heat dissipation device with better integration and sealing properties.
Another objective of the present invention is to provide a method for manufacturing a heat dissipation device that can improve the bonding and sealing performance of the vapor chamber.
To achieve the above object, the present invention provides:
a heat-dissipating component, comprising:
the body is provided with a first metal plate body and a second metal plate body, the first metal plate body and the second metal plate body jointly define a closed cavity, the surface of the closed cavity is provided with at least one capillary structure layer and filled with working liquid, the outer edge of the cavity of the body is provided with a lip, the lip is provided with a sintering welding part, and the sintering welding part is vertically connected with the first metal plate body and the second metal plate body.
The heat dissipation element, wherein: the sintered portion vertically penetrates the entire thickness of the first metal plate body and extends to a position one-third to two-thirds of the thickness of the second metal plate body.
The heat dissipation element, wherein: the first metal plate body and the second metal plate body are made of any one of gold, silver, iron, copper, aluminum, commercial pure titanium, titanium alloy and stainless steel.
The heat dissipation element, wherein: the body is provided with a supporting structure, the supporting structure is a supporting piece which is deformed by external force or is supported by cutting machining or an external element, and the cutting machining is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body in a cutting mode to support the other plate body in an abutting mode; the supporting structure deformed by the external force is formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body and sinking the other side of the plate body; the additional element is formed by arranging a support body such as a supporting column between the first metal plate body and the second metal plate body to serve as a supporting structure.
The heat dissipation element, wherein: a capillary structure is arranged between the first metal plate body and the second metal plate body, and the capillary structure is a sintered powder plate body, a fiber body, a grid body, a corrugated plate or a plate body with a plurality of grooves.
A method for manufacturing a heat dissipation element is characterized by comprising the following steps:
providing a first metal plate body and a second metal plate body;
forming a capillary structure on one side of any one of the first metal plate body and the second metal plate body;
correspondingly overlapping the first metal plate body and the second metal plate body, vertically performing edge sealing operation on the corresponding overlapped parts of the first metal plate body and the second metal plate body in a resistance wheel welding mode, and reserving a water injection and air exhaust area;
and (4) carrying out vacuum pumping and water injection operation, and finally sealing the water injection and air exhaust area in a resistance wheel welding mode.
The manufacturing method of the heat dissipation element comprises the following steps: the first metal plate body and the second metal plate body are made of any one of copper, aluminum, commercial pure titanium and stainless steel.
The manufacturing method of the heat dissipation element comprises the following steps: argon is introduced as inert gas to prevent oxidation reaction during resistance wheel welding.
The manufacturing method of the heat dissipation element comprises the following steps: the resistance wheel welding work is carried out in a vacuum environment.
The manufacturing method of the heat dissipation element comprises the following steps: the first metal plate body and the second metal plate body are the same in size or different in size.
The manufacturing method of the heat dissipation element comprises the following steps: the resistance wheel welding completely penetrates through the first metal plate body and penetrates through the second metal plate body by one third to two thirds of the thickness.
The manufacturing method of the heat dissipation element comprises the following steps: a step of forming a capillary structure on one side of either the first metal plate or the second metal plate, the step further comprising: a capillary structure is arranged between the first metal plate body and the second metal plate body, and the capillary structure is a grid body or a fiber body.
The manufacturing method of the heat dissipation element comprises the following steps: after the step of forming a capillary structure on one side of either the first metal plate body or the second metal plate body, there is a step of: a supporting structure is formed on one side of any one of the first metal plate body and the second metal plate body.
The manufacturing method of the heat dissipation element comprises the following steps: the supporting structure is a supporting piece which is deformed by external force or is supported by cutting machining or an external element, and the cutting machining is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body in a cutting mode to support the other plate body in an abutting mode; the supporting structure deformed by the external force is formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body and sinking the other side of the plate body; the additional element is formed by arranging a support body such as a supporting column between the first metal plate body and the second metal plate body to serve as a supporting structure.
The invention mainly improves the defects of poor bonding property and sealing property of the temperature-uniforming plate by improving the welding angle structure and the method of the resistance wheel welding and the first metal plate body and the second metal plate body.
Drawings
FIG. 1 is a schematic view of a prior art vapor chamber;
FIG. 1a is a schematic view of a conventional vapor chamber;
fig. 2 is an exploded perspective view of a first embodiment of the heat dissipating component of the present invention;
FIG. 3 is a cross-sectional view of a first embodiment of a heat-dissipating component of the present invention;
fig. 4 is an exploded perspective view of a second embodiment of the heat dissipating component of the present invention;
FIG. 5 is a flowchart illustrating a method for manufacturing a heat dissipation device according to a first embodiment of the present invention;
FIG. 6 is a schematic view of a manufacturing method of a heat dissipation device according to a first embodiment of the present invention;
FIG. 7 is a schematic view of a manufacturing method of a heat dissipation device according to a first embodiment of the present invention;
FIG. 8 is a flowchart illustrating steps of a method for manufacturing a heat dissipation device according to a second embodiment of the present invention;
fig. 9 is a flow chart of the steps of the method for manufacturing a heat dissipation device according to the third embodiment of the present invention.
Description of reference numerals: a body 1; a first metal plate body 1 a; a second metal plate body 1 b; a support structure 1 c; a capillary structure 1 d; a closed chamber 1 e; a water injection and air extraction area 1 f; 1g of working liquid; the lip part is 1 h; sintering the welded portion 1 i; a resistance wheel welding machine 2; a capillary structure 3.
Detailed Description
Referring to fig. 2 and fig. 3, which are three-dimensional exploded and assembled views of a heat dissipation device according to a first embodiment of the present invention, as shown in the drawings, the heat dissipation device includes: a body;
the body 1 is provided with a first metal plate 1a and a second metal plate 1b, the first metal plate, the second metal plate 1a, 1b are made of gold, silver, iron, copper, aluminum, commercial pure titanium, stainless steel or any one of other metals with heat conduction characteristics, the first metal plate, the second metal plate 1a, 1b define a closed chamber 1e together, the surface of the closed chamber 1e is provided with at least one capillary structure 1d (which can be any one of sintered powder body, fiber body, mesh body or groove), the capillary structure 1d is selectively arranged on any one of the first metal plate, the second metal plate 1a, 1b, the closed chamber 1e is filled with a working liquid 1g, the outer edge of the closed chamber 1e of the body 1 is provided with a lip portion 1h, the lip portion 1h is provided with a sintering welding portion 1i, the sintered portion 1i vertically connects the first metal plate body and the second metal plate body 1a, 1b, and the sintered portion 1i vertically penetrates the entire thickness of the first metal plate body 1a and extends to a position one-third to two-thirds of the thickness of the second metal plate body 1 b.
The body 1 is provided with a supporting structure 1c, the supporting structure 1c can be a supporting member deformed by external force or supported by cutting machining or an additional element, and the cutting machining is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body 1a and 1b by cutting machining (such as milling machining) to support the other plate body in an abutting mode; the supporting structure 1c deformed by the external force is a supporting structure 1c formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body 1a and 1b and sinking the other side; the additional element is a supporting structure 1c, such as a supporting column, disposed between the first metal plate body and the second metal plate body 1a, 1b, and is not limited thereto.
Please refer to fig. 4, which is an exploded perspective view of a second embodiment of the heat dissipation device of the present invention, and as shown in the drawing, the implementation of the partial description of this embodiment is the same as that of the first embodiment, and therefore will not be described herein again, but the difference between this embodiment and the first embodiment is that a capillary structure 3 is placed between the first metal plate and the second metal plate, the capillary structure in this step is a single structure, the capillary structure 3 is disposed between the first metal plate and the second metal plate 1a and 1b, the capillary structure 3 is any one of a sintered powder plate, a fiber body, a mesh body, a corrugated plate or a plate with a plurality of grooves, and the capillary structure 3 can provide an auxiliary capillary force to increase the efficiency of vapor-liquid circulation.
Referring to fig. 5, which is a flowchart illustrating steps of a method for manufacturing a heat dissipation device according to a first embodiment of the present invention, and referring to fig. 6 and 7, the method for manufacturing a heat dissipation device according to the present invention includes the following steps:
s1: providing a first metal plate body and a second metal plate body;
a first metal plate 1a and a second metal plate 1b are provided, the first metal plate 1a and the second metal plate 1b have the same or different sizes, the first metal plate 1a and the second metal plate 1b can be any one of copper, aluminum, stainless steel, titanium alloy, and commercially pure titanium, and the embodiment is an illustrative embodiment using commercially pure titanium and copper in combination, but not limited thereto.
S2: forming a capillary structure on one side of any one of the first metal plate body and the second metal plate body;
a capillary structure 1d is formed on one or any two sides of the first metal plate body and the second metal plate body 1a and 1b corresponding to each other, and the capillary structure 1d is any one of sintered powder, a grid body, a groove and a fiber body.
S3: correspondingly overlapping the first metal plate body and the second metal plate body, vertically performing edge sealing operation on the corresponding overlapped parts of the first metal plate body and the second metal plate body in a resistance wheel welding mode, and reserving a water injection and air exhaust area;
correspondingly overlapping the first metal plate body and the second metal plate body 1a and 1b and forming a closed cavity 1e between the first metal plate body and the second metal plate body, combining the outer edge parts of the first metal plate body and the second metal plate body 1a and 1b which are correspondingly overlapped in a resistance wheel welding mode, wherein when the resistance wheel welding machine is used for welding a resistance wheel, the resistance wheel welding machine is mainly vertically arranged with the first metal plate body and the second metal plate body 1a and 1b, so that the discharge fuse generated by the resistance wheel welding machine 2 vertically penetrates into the first metal plate body and the second metal plate body 1a and 1b, directly penetrates through the whole first metal plate body 1a arranged at the upper part and then penetrates through the part, about one third to two thirds of the thickness of the second metal plate body 1b arranged at the lower part of the first metal plate body 1a, and finally, an area 1f for water injection and air extraction is reserved to seal other parts, during the resistance wheel welding operation, argon is preferably introduced into the positions of the resistance wheel welding machine 2 and the first metal plate body and the second metal plate body 1a and 1b to perform inert gas protection, so that the oxidation reaction is avoided during the resistance wheel welding operation, and the working environment of the resistance wheel welding can be arranged under a vacuum environment to avoid the pollution or the oxidation reaction during the welding operation.
S4: and (4) carrying out vacuum pumping and water injection operation, and finally sealing the water injection and air exhaust area in a resistance wheel welding mode.
And performing air suction and water injection operation, performing vacuum pumping and working liquid injection operation on the first metal plate body and the second metal plate body 1a and 1b subjected to edge sealing, and finally sealing the reserved water injection and air suction area 1f in the same manner by means of resistance wheel welding.
Please refer to fig. 8, which is a flowchart illustrating a step of a method for manufacturing a heat dissipation device according to a second embodiment of the present invention, wherein, as shown in the figure, a portion of the description of the present embodiment is the same as that of the first embodiment, and therefore will not be described herein again, but the difference between the present embodiment and the first embodiment is that a step S5 is further performed after the step of forming a capillary structure on one side of any one of the first metal plate and the second metal plate: a capillary structure is placed between the first metal plate body and the second metal plate body, the capillary structure 3 in the step is a single structure body, the capillary structure 3 is arranged between the first metal plate body and the second metal plate body 1a and 1b, and the capillary structure is any one of a sintered powder plate body, a fiber body, a grid body, a corrugated plate body or a plate body with a plurality of grooves.
Please refer to fig. 9, which is a flowchart illustrating a step of a method for manufacturing a heat dissipation device according to a third embodiment of the present invention, wherein, as shown in the drawing, a part of the description of the present embodiment is the same as that of the first embodiment, and therefore will not be described herein again, but the present embodiment differs from the first embodiment in that a capillary structure is formed on one side of any one of the first metal plate and the second metal plate; this step is further followed by a step S6: forming a supporting structure on one side of any one of the first metal plate body and the second metal plate body;
the supporting structure 1c can be a supporting member deformed by external force or formed by cutting or supported by an additional element, wherein the cutting is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body 1a and 1b by cutting to support the other plate body; the supporting structure deformed by the external force is a supporting structure formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body 1a and 1b and sinking the other side; the additional element is formed by disposing a support such as a supporting pillar between the first metal plate and the second metal plate 1a, 1b, and the embodiment is not limited to the illustrated embodiment, which is a supporting structure formed by external pressure processing.
The invention mainly improves the defect that commercial pure titanium or titanium metal or copper material is not easy to combine by a resistance wheel welding mode, and improves the vertical corresponding arrangement of a resistance wheel welding device and a first metal plate body and a second metal plate body 1a and 1b which are to be subjected to resistance wheel welding during resistance wheel welding, so that the discharge melting generated by resistance wheel welding vertically penetrates through one third to two thirds of the thickness of the first metal plate body 1a and the second metal plate body 1b, and finally the first metal plate body and the second metal plate body are completely combined, thereby improving the combination and the tightness of the first metal plate body and the second metal plate body 1a and 1b, and improving the defect that the existing temperature equalizing plate or flat plate type heat pipe is difficult to align.
Claims (14)
1. A heat-dissipating component, comprising:
the body is provided with a first metal plate body and a second metal plate body, the first metal plate body and the second metal plate body jointly define a closed cavity, the surface of the closed cavity is provided with at least one capillary structure layer and filled with a working liquid, the outer edge of the cavity of the body is provided with a lip, the lip is provided with a sintering welding part, the sintering welding part is vertically connected with the first metal plate body and the second metal plate body, and the sintering welding part is formed by discharging resistance wheel welding machines and tools vertically arranged with the first metal plate body and the second metal plate body.
2. The heat-dissipating component of claim 1, wherein: the sintered portion vertically penetrates the entire thickness of the first metal plate body and extends to a position one-third to two-thirds of the thickness of the second metal plate body.
3. The heat-dissipating component of claim 1, wherein: the first metal plate body and the second metal plate body are made of any one of gold, silver, iron, copper, aluminum, commercial pure titanium, titanium alloy and stainless steel.
4. The heat-dissipating component of claim 1, wherein: the body is provided with a supporting structure, the supporting structure is a supporting piece which is deformed by external force or is supported by cutting machining or an external element, and the cutting machining is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body in a cutting mode to support the other plate body in an abutting mode; the supporting structure deformed by the external force is formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body and sinking the other side of the plate body; the additional element is a supporting structure which is formed by arranging a supporting body between the first metal plate body and the second metal plate body.
5. The heat-dissipating component of claim 1, wherein: a capillary structure is arranged between the first metal plate body and the second metal plate body, and the capillary structure is a sintered powder plate body, a fiber body, a grid body, a corrugated plate or a plate body with a plurality of grooves.
6. A method for manufacturing a heat dissipation element is characterized by comprising the following steps:
providing a first metal plate body and a second metal plate body;
forming a capillary structure on one side of any one of the first metal plate body and the second metal plate body;
correspondingly overlapping the first metal plate body and the second metal plate body, adopting a resistance wheel welding machine to vertically correspond to the corresponding overlapped parts of the first metal plate body and the second metal plate body, discharging by the resistance wheel welding machine to carry out edge sealing operation, and reserving a water injection and air exhaust area, wherein a sintered welding part formed by discharging by the resistance wheel welding machine is vertically connected with the first metal plate body and the second metal plate body;
and (4) carrying out vacuum pumping and water injection operation, and finally sealing the water injection and air exhaust area in a resistance wheel welding mode.
7. The heat dissipating component manufacturing method according to claim 6, wherein: the first metal plate body and the second metal plate body are made of any one of copper, aluminum, commercial pure titanium and stainless steel.
8. The heat dissipating component manufacturing method according to claim 6, wherein: argon is introduced as inert gas to prevent oxidation reaction during resistance wheel welding.
9. The heat dissipating component manufacturing method according to claim 6, wherein: the resistance wheel welding work is carried out in a vacuum environment.
10. The heat dissipating component manufacturing method according to claim 6, wherein: the first metal plate body and the second metal plate body are the same in size or different in size.
11. The heat dissipating component manufacturing method according to claim 6, wherein: the resistance wheel welding completely penetrates through the first metal plate body and penetrates through the second metal plate body by one third to two thirds of the thickness.
12. The heat dissipating component manufacturing method according to claim 6, wherein: a step of forming a capillary structure on one side of either the first metal plate or the second metal plate, the step further comprising: a capillary structure is arranged between the first metal plate body and the second metal plate body, and the capillary structure is a grid body or a fiber body.
13. The heat dissipating component manufacturing method according to claim 6, wherein: after the step of forming a capillary structure on one side of either the first metal plate body or the second metal plate body, there is a step of: a supporting structure is formed on one side of any one of the first metal plate body and the second metal plate body.
14. The heat dissipating component manufacturing method according to claim 13, wherein: the supporting structure is a supporting piece which is deformed by external force or is supported by cutting machining or an external element, and the cutting machining is to form a protruding structure on one side of any one of the first metal plate body and the second metal plate body in a cutting mode to support the other plate body in an abutting mode; the supporting structure deformed by the external force is formed by applying the external force to one side of any one of the first metal plate body and the second metal plate body and sinking the other side of the plate body; the additional element is a supporting structure which is formed by arranging a supporting body between the first metal plate body and the second metal plate body.
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| CN109883225B (en) * | 2019-01-03 | 2021-08-24 | 奇鋐科技股份有限公司 | Heat sink device |
| US11092383B2 (en) | 2019-01-18 | 2021-08-17 | Asia Vital Components Co., Ltd. | Heat dissipation device |
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