CN112566466B - Heat dissipation structure and processing method thereof - Google Patents
Heat dissipation structure and processing method thereof Download PDFInfo
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- CN112566466B CN112566466B CN202011446569.2A CN202011446569A CN112566466B CN 112566466 B CN112566466 B CN 112566466B CN 202011446569 A CN202011446569 A CN 202011446569A CN 112566466 B CN112566466 B CN 112566466B
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- cavity
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Thermal Sciences (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a processing method of a heat dissipation structure, which comprises the following steps: step 1: manufacturing a temperature-equalizing plate with a plurality of independent cavities, filling a phase-changeable working medium into each cavity and independently sealing; step 2: processing a plurality of notches penetrating through the upper surface and the lower surface of the temperature-uniforming plate on the temperature-uniforming plate along the length direction of a cavity of the temperature-uniforming plate; at least one cavity is arranged between the adjacent incisions; and step 3: and stretching the temperature equalizing plate to enlarge the area of the notch, thereby obtaining the heat dissipation structure with the net structure. The processing method obtains the heat dissipation structure with the net structure through simple cutting and stretching, increases the heat dissipation surface area, reduces the resistance of air flow, improves the heat dissipation efficiency, and belongs to the technical field of heat dissipation.
Description
Technical Field
The invention belongs to the technical field of heat dissipation, and particularly relates to a processing method of a heat dissipation structure.
Background
With the development of science and technology, various electronic devices are filled in life, and generate a large amount of heat during operation, and if the heat is not dissipated, the electronic devices stop operating or are damaged, so that a heat dissipation structure is an essential part. The existing heat dissipation structures are various, for example, a temperature equalization plate is a common heat dissipation structure, a cavity is arranged in the heat dissipation structure, a liquid or vapor working medium which can absorb or release heat through phase change is filled in the cavity, but the heat dissipation efficiency is not high, and a method of increasing a plurality of fins is tried to increase the heat dissipation efficiency, but the processing method is very complicated, the amount of required metal is large, and the cost is high.
Therefore, the technical problems to be solved by the application are as follows: how to provide a processing method for improving the heat dissipation efficiency of a heat dissipation structure.
Disclosure of Invention
The invention mainly aims to provide a processing method of a heat dissipation structure, which obtains the heat dissipation structure with a net structure by simple cutting and stretching, increases the heat dissipation surface area, reduces the resistance of air flow and improves the heat dissipation efficiency.
According to a first aspect of the present invention, there is provided a method for processing a heat dissipation structure, including the steps of:
step 1: manufacturing a temperature-equalizing plate with a plurality of independent cavities, filling a phase-changeable working medium into each cavity and independently sealing;
step 2: processing a plurality of notches penetrating through the upper surface and the lower surface of the temperature-uniforming plate on the temperature-uniforming plate along the length direction of a cavity of the temperature-uniforming plate; at least one cavity is arranged between the adjacent incisions; the notches are arranged in a plurality of rows along the length direction of the cavity; the incisions of the adjacent columns are respectively a first incision and a second incision, and the first incision and the second incision are arranged in a staggered mode;
and step 3: and stretching the temperature equalizing plate to enlarge the area of the notch, thereby obtaining the heat dissipation structure with the net structure.
In a particular embodiment of the invention, the first and second cuts at least partially overlap in a direction perpendicular to the length of the cavity.
In a particular embodiment of the invention, the first cut extends to the middle of the second cut in a direction perpendicular to the length of the cavity.
In a particular embodiment of the invention, the first cut extends to the end of the second cut near the end of the first cut in a direction perpendicular to the length of the cavity.
In a specific embodiment of the invention, the cuts are arranged in a plurality of rows along the length direction of the cavity; the slits of adjacent columns are arranged side by side.
In a specific embodiment of the invention, in at least one row of the notches, the notches close to the two sides of the temperature-uniforming plate along the length direction of the cavity extend to the side surface of the temperature-uniforming plate, so that the notches are open towards the side surface of the temperature-uniforming plate;
or, in any one row of slits, all the slits are inside the vapor chamber.
In a specific embodiment of the invention, the most marginal notches in the odd-numbered rows of notches are open towards the side direction of the temperature-uniforming plate, and the most marginal notches in the even-numbered rows of notches are closed towards the side direction of the temperature-uniforming plate;
or the most marginal notches in the even-numbered rows of notches are open towards the side direction of the temperature-uniforming plate, and the most marginal notches in the odd-numbered rows of notches are closed towards the side direction of the temperature-uniforming plate.
In a particular embodiment of the invention, the total length of the slits of any row is not less than 50% of the length of the cavity.
Meanwhile, the invention also discloses a heat dissipation structure, which is prepared by the method.
One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:
the processing method can change the temperature equalizing plate into a heat dissipation structure with a net structure by simply cutting and stretching, thereby increasing the heat dissipation surface area, lightening the weight, reducing the resistance of air flow, improving the heat dissipation efficiency, saving materials and having lower processing cost.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
fig. 1 is a front view of a processed heat dissipation structure of embodiment 1 of the present invention;
FIG. 2 is a sectional view taken along line C-C of FIG. 1 in accordance with embodiment 1 of the present invention;
FIG. 3 is a schematic view of a uniform temperature plate before stretching of example 1 of the present invention;
fig. 4 is a front view of a processed heat dissipation structure of embodiment 2 of the present invention;
FIG. 5 is a sectional view B-B of FIG. 4 in accordance with embodiment 2 of the present invention;
fig. 6 is a front view of a processed heat dissipation structure of embodiment 3 of the present invention;
FIG. 7 is a sectional view A-A of FIG. 6 in accordance with embodiment 3 of the present invention;
FIG. 8 is a schematic view of a pre-stretched vapor chamber of example 3 of the present invention;
fig. 9 is a sectional view of a processed heat dissipation structure of embodiment 4 of the present invention;
fig. 10 is a sectional view of another heat dissipation structure processed in embodiment 4 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.
The following disclosure provides many different embodiments, or examples, for implementing different aspects of the invention.
Example 1
Referring to fig. 1 and 3, in an embodiment of the present invention, a method for processing a heat dissipation structure includes the following steps:
step 1: manufacturing a temperature-equalizing plate 1 with a plurality of independent cavities 11, filling a phase-changeable working medium into each cavity 11 and independently sealing;
step 2: processing a plurality of notches 2 penetrating through the upper surface and the lower surface of the temperature-uniforming plate 1 on the temperature-uniforming plate 1 by adopting cutting or stamping and other modes along the length direction of the cavity 11 of the temperature-uniforming plate 1; at least one cavity 11 is arranged between the adjacent incisions 2;
and step 3: and stretching the temperature equalizing plate 1 to enlarge the area of the notch 2, thereby obtaining the heat dissipation structure with a net structure.
The processing method can change the temperature equalizing plate 1 into a heat dissipation structure with a net structure by simply cutting and stretching, thereby increasing the heat dissipation surface area, lightening the weight, reducing the resistance of air flow, improving the heat dissipation efficiency, saving materials and having lower processing cost.
In one embodiment of the present invention, the slits 2 are arranged in multiple rows along the length direction of the cavity 11; the adjacent rows of the slits 2 are respectively the first slits 21 and the second slits 22, and the first slits 21 and the second slits 22 are arranged in a staggered manner, so that a net structure obtained when stretching is performed is larger, the increased heat dissipation surface area is more, and the heat dissipation is facilitated.
Preferably, the first cut 21 and the second cut 22 at least partially overlap in a direction perpendicular to the length of the cavity 11, so that the net structure formed by stretching is looser and the increased heat dissipation surface area can be larger.
More preferably, the first slit 21 extends to the middle of the second slit 22 in the direction perpendicular to the length of the cavity 11, so that the net structure formed by stretching can maximize the heat dissipation surface area, optimize the air flow, and improve the heat dissipation efficiency.
In one embodiment of the invention, in at least one row of the notches 2, the notches 2 close to two sides of the temperature-uniforming plate 1 along the length direction of the cavity 11 extend to the side surface of the temperature-uniforming plate 1, so that the notches 2 are opened towards the side surface of the temperature-uniforming plate 1, generally speaking, one side of the temperature-uniforming plate 1 along the length direction of the cavity 11 is contacted with an object to be radiated, the other side is exposed in air, a phase-changeable working medium absorbs heat and evaporates at the side contacted with the object to be radiated, and then radiates heat and condenses at the other side, so as to absorb heat and radiate heat back and forth continuously, the opening of the notches 2 can make the heat-radiating structure contact with the air more fully;
or, in any one row of the notches 2, all the notches 2 are arranged on the inner side of the temperature equalizing plate 1, so that the structural stability is better.
Specifically, the outermost notches 2 of the odd-numbered rows of notches 2 are open toward the side of the temperature-uniforming plate 1, and the outermost notches 2 of the even-numbered rows of notches 2 are closed toward the side of the temperature-uniforming plate 1;
or, the most marginal notch 2 in the even-numbered rows of notches 2 is open towards the side direction of the temperature-uniforming plate 1, and the most marginal notch 2 in the odd-numbered rows of notches 2 is closed towards the side direction of the temperature-uniforming plate 1.
In one embodiment of the invention, the total length of the slits 2 in any row is not less than 50% of the length of the cavity 11.
Example 2
Referring to fig. 4 and 5, the same as embodiment 1 is substantially the same, except that: the first cutout 21 does not extend to the middle of the second cutout 22. Specifically, the cuts 2 are arranged in multiple rows along the length direction of the cavity 11; the incisions 2 of adjacent columns are respectively a first incision 21 and a second incision 22, and the first incision 21 and the second incision 22 are arranged in a staggered manner.
Preferably, the first cut 21 and the second cut 22 at least partially overlap in a direction perpendicular to the length of the cavity 11.
Preferably, the first notch 21 extends to the end of the second notch 22 close to the end of the first notch 21, so that along the length direction of the cavity 11, the number of the connected parts between the two notches 2 is larger, and the rigidity of the whole heat dissipation structure is better.
This example is more stable than example 1, but the increased heat dissipation surface area is relatively small, and the air fluidity is also poor.
Example 3
Referring to fig. 6 and 8, substantially the same as in embodiments 1 and 2, except that: the first slits 21 and the second slits 22 are not staggered. Specifically, the cuts 2 are arranged in multiple rows along the length direction of the cavity 11; the adjacent rows of notches 2 are arranged side by side, so that the cutting is facilitated, and the processing difficulty is lower.
This example is easier to process than examples 1 and 2, but the increased heat dissipation surface area is less.
Example 4
Referring to fig. 9 and 10, the same as that of embodiment 3, except that there is a certain space between the two cavities 11 of the vapor chamber 1, and the space is solid, when the cut 2 is made on the vapor chamber 1, it is not made at the position of the cavity 11, but is made on the solid portion between the two cavities 11, so that the heat dissipation structure formed is more stable and less prone to deformation.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A processing method of a heat dissipation structure is characterized by comprising the following steps:
step 1: manufacturing a temperature-equalizing plate with a plurality of independent cavities, filling a phase-changeable working medium into each cavity and independently sealing;
step 2: processing a plurality of notches penetrating through the upper surface and the lower surface of the temperature-uniforming plate on the temperature-uniforming plate along the length direction of a cavity of the temperature-uniforming plate; at least one cavity is arranged between the adjacent incisions; the notches are arranged in a plurality of rows along the length direction of the cavity; the incisions of the adjacent columns are respectively a first incision and a second incision, and the first incision and the second incision are arranged in a staggered mode;
and step 3: and stretching the temperature equalizing plate to enlarge the area of the notch, thereby obtaining the heat dissipation structure with the net structure.
2. The method of claim 1, wherein the first and second cuts at least partially overlap in a direction perpendicular to the length of the cavity.
3. The method of claim 1, wherein the first notch extends to a middle portion of the second notch in a direction perpendicular to a length direction of the cavity.
4. The method as claimed in claim 1, wherein the first notch extends to an end of the second notch near an end of the first notch in a direction perpendicular to a length direction of the cavity.
5. The method for processing a heat dissipation structure as claimed in claim 1, wherein the cuts are arranged in a plurality of rows along the length direction of the cavity; the slits of adjacent columns are arranged side by side.
6. The method for processing a heat dissipation structure as recited in any one of claims 2 to 5, wherein in the at least one row of slits, the slits near both sides of the vapor chamber in the longitudinal direction of the cavity extend to the side of the vapor chamber, so that the slits are open toward the side of the vapor chamber;
or, in any one row of slits, all the slits are inside the vapor chamber.
7. The method for processing a heat dissipation structure as recited in claim 6, wherein the outermost slits among the slits in the odd-numbered columns are open toward the side of the temperature equalization plate, and the outermost slits among the slits in the even-numbered columns are closed toward the side of the temperature equalization plate;
or the most marginal notches in the even-numbered rows of notches are open towards the side direction of the temperature-uniforming plate, and the most marginal notches in the odd-numbered rows of notches are closed towards the side direction of the temperature-uniforming plate.
8. The method as claimed in any one of claims 1 to 5, wherein the total length of the slits in any row is not less than 50% of the length of the cavity.
9. A heat dissipating structure prepared by the method of any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011446569.2A CN112566466B (en) | 2020-12-11 | 2020-12-11 | Heat dissipation structure and processing method thereof |
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| CN202011446569.2A CN112566466B (en) | 2020-12-11 | 2020-12-11 | Heat dissipation structure and processing method thereof |
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| CN112566466A CN112566466A (en) | 2021-03-26 |
| CN112566466B true CN112566466B (en) | 2021-07-09 |
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| CN113867457B (en) * | 2021-10-10 | 2022-06-10 | 飞成技术(佛山)有限公司 | Cover body structure for intelligently regulating and controlling temperature and humidity and temperature and humidity regulation and control method |
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