CN112077547A - Soaking plate structure without liquid absorption core and preparation method thereof - Google Patents

Soaking plate structure without liquid absorption core and preparation method thereof Download PDF

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Publication number
CN112077547A
CN112077547A CN202010767496.0A CN202010767496A CN112077547A CN 112077547 A CN112077547 A CN 112077547A CN 202010767496 A CN202010767496 A CN 202010767496A CN 112077547 A CN112077547 A CN 112077547A
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CN
China
Prior art keywords
cover plate
cavity
plate
concave portion
wick
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Pending
Application number
CN202010767496.0A
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Chinese (zh)
Inventor
于全耀
梁平平
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Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd
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Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd
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Application filed by Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd filed Critical Dongguan Lingjie Metal Precision Manufacturing Technology Co Ltd
Priority to CN202010767496.0A priority Critical patent/CN112077547A/en
Publication of CN112077547A publication Critical patent/CN112077547A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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

Abstract

The invention discloses a soaking plate structure without a liquid absorption core and a preparation method thereof, wherein the soaking plate structure comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are mutually covered to form a cavity, and a plurality of supporting pieces are arranged in the cavity; and working media are filled in the cavity. The invention saves the liquid absorption core structure in the soaking plate, reduces the sintering process in the processing process, has the effect of obviously saving energy consumption, is beneficial to further reducing the thickness of the soaking plate, and accords with the development trend of the market.

Description

Soaking plate structure without liquid absorption core and preparation method thereof
Technical Field
The invention relates to the technical field of heat dissipation products, in particular to a soaking plate structure without a liquid absorption core and a preparation method thereof.
Background
In 2019, the Chinese industry and informatization department first issued 5G commercial license plates, many equipment and communication manufacturers followed up quickly, and as an application aspect of the 5G technology, large-scale mobile phone manufacturers such as Huashi and millet rapidly issued 5G smart phones. The application of 5G technology means a better use experience and also means higher power consumption. The power consumption inevitably brings the heat dissipation problem of related products in a narrow space. The ultrathin heat pipe and the soaking plate are used as development and application hotspots of heat dissipation products and applied to more kinds of mobile phones. Currently, the thickness of the heat spreader has been reduced to below 0.5mm, and thinner thickness is being pursued to reduce the space occupied by the cellular phone.
However, two structures of a liquid absorption core and a steam cavity are arranged inside the soaking plate in the current market, the two structures are arranged up and down to form backflow of internal working media, and the arrangement structure has a thickness limit and limits the thinner design capability of the soaking plate.
Disclosure of Invention
The invention provides a soaking plate structure without a liquid absorption core and a preparation method thereof, which can solve one or more of the problems in the prior art.
According to one aspect of the invention, a vapor chamber structure without a liquid absorbing core is provided, which comprises a first cover plate and a second cover plate which are symmetrically arranged, wherein the first cover plate and the second cover plate are mutually covered to form a cavity, and a plurality of supporting pieces are arranged in the cavity; and working media are filled in the cavity.
The vapor chamber has the advantages that the vapor chamber is simple in structure, the supporting piece supports the three-dimensional structure of the vapor chamber and can prevent deformation, the liquid absorption core structure in the vapor chamber is omitted through redesign of the internal structure, at least one sintering process is omitted in the processing process of the vapor chamber, the process flow is shortened, and the effects of saving energy and reducing consumption are obvious. In addition, the liquid absorbing function of the vapor chamber is realized by a support piece between the first cover plate and the second cover plate. The liquid working medium and the gaseous working medium are arranged left and right instead of up and down. The structure reduces the requirement of the soaking plate on the inner space, is beneficial to further reducing the thickness of the soaking plate, accords with the ultra-thin design trend of modern electronic equipment, has good market adaptability and has wide market requirements.
In some embodiments, the inner surfaces of the first cover plate and the second cover plate are respectively provided with a first concave portion and a second concave portion which are symmetrical to each other, and the first concave portion and the second concave portion jointly define the cavity; the plurality of supporting pieces are arranged in the first concave part or the second concave part. The beneficial effects are that, first apron and second apron symmetry set up and cover mutually, and first concave part and second concave part are laminated each other and are formed the cavity, and the cavity inside can be used for filling the working medium.
In some embodiments, a plurality of the supports are symmetrically disposed within the first and second recesses. The novel cover plate has the beneficial effects that the first cover plate and the second cover plate are symmetrical in structure and are convenient to connect when being mutually covered. The supporting pieces arranged in the first concave part and the second concave part are symmetrically connected, and the cavity structure of the whole soaking plate is supported.
In some embodiments, the support member is an elongate structure. The vapor chamber has the advantages that the cavity inside the vapor chamber is divided into the left heat dissipation compartments and the right heat dissipation compartments which are arranged side by side through the supporting piece, the working medium is diffused in the heat dissipation compartments, and in the working process, the liquid working medium and the gaseous working medium are exchanged in the heat dissipation compartments, so that the heat dissipation effect is enhanced.
In some embodiments, both ends of the supporting member are not connected to the edge of the cavity, and the supporting members are arranged side by side. Therefore, only one surface of the support piece is connected with the inner surface of the first cover plate or the second cover plate, the working medium can flow at the edge of the first concave part or the second concave part, the fluidity of the working medium is enhanced, and the heat dissipation efficiency is improved.
In some embodiments, one end of the support is connected to the edge of the cavity and the other end is not connected to the edge of the cavity. Therefore, one end of the supporting piece is connected with the edge of the first concave part or the second concave part, the flow path of the working medium is prolonged, the effect of heat exchange of the working medium in the cavity can be guaranteed, and the heat dissipation efficiency is improved.
In some embodiments, the support members are in a "wrap" cross arrangement. The heat exchanger has the advantages that the flow path of the working medium can be prolonged, and the heat exchange is ensured.
According to another aspect of the invention, a method for preparing a soaking plate structure without a liquid absorbing core is provided, wherein the first cover plate and the second cover plate are formed in an etching or stamping mode; and the welding sealing is carried out between the first cover plate and the second cover plate and the supporting piece in a brazing or pressure welding mode. The beneficial effects are that, the mode that adopts sculpture or punching press can guarantee that the shape of first apron and second apron meets the requirements, guarantees product quality. The sealing performance of the soaking plate structure can be ensured through brazing or pressure welding, and the service life of the product is prolonged.
Drawings
FIG. 1 is a flow chart showing the processing of a soaking plate according to example 1 of the present invention;
fig. 2 is a schematic view of the structure of the first cover plate of the soaking plate according to embodiment 1 of the present invention;
fig. 3 is a schematic view of the first cover plate structure of the soaking plate according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Fig. 1 schematically shows a process flow for a wick-less vapor chamber structure according to an embodiment of the present invention, including the following steps:
and S1, selecting two plates which are respectively a first cover plate 10 and a second cover plate.
S2, cutting the first cover plate 10 and the second cover plate into symmetrical rectangles with appropriate sizes, and punching a groove, namely a first concave part 11 and a second concave part, in the middle of the inner surfaces of the first cover plate 10 and the second cover plate respectively by using a punching machine. The first concave portion 11 and the second concave portion are symmetrically arranged, the inner surface of the first cover plate 10 and the inner surface of the second cover plate are attached to each other, and the first concave portion 11 and the second concave portion can jointly define a cavity. The punch forming can guarantee that the shapes of the first cover plate 10 and the second cover plate meet the requirements, and the environmental protection is pollution-free and high in safety.
And S3, cutting a plurality of strip-shaped supporting pieces 20, wherein the thickness of each supporting piece 20 is equivalent to the depth of the first concave part 11 or the second concave part. And fixing the plurality of supports 20 in the first recess 11 or the second recess respectively in parallel by adopting a brazing mode, so that the plurality of supports 20 are symmetrically arranged in the first recess 11 and the second recess. When welding, the support member 20 is fixed at the center of the first recess 11 or the second recess, so that both ends of the support member 20 are not connected with the edge of the first recess 11 or the second recess. The internal structure of the first cover plate 10 is shown in fig. 2, and the internal structure of the second cover plate is symmetrical.
And S4, mutually covering the first cover plate 10 and the second cover plate, and connecting the first concave part 11 with the second concave part to form a cavity. The first recess 11 and the support member 20 in the second recess are symmetrically welded together by means of pressure welding. The supporting member 20 supports the chamber and prevents the soaking plate from being deformed. And (3) welding the joint of the first cover plate 10 and the second cover plate together while welding the support piece 20 to form a soaking plate main body, and reserving an outlet for communicating the inside of the cavity with the outside.
And S5, vacuumizing the cavity through the outlet to enable the cavity to be in a negative pressure state. And filling a certain amount of working medium in the cavity, and then welding, welding and sealing the outlet to obtain the soaking plate without the liquid absorption core.
Example 2
The present embodiment is different from embodiment 1 in that:
in S2 and S3, the first concave portion 11 and the second concave portion on the first cover plate 10 and the second cover plate, and the structure of the supporting member 20 located in the first concave portion 11 and the second concave portion are all formed in one step by etching. The etching process is mature, and the processing of the appearance and the internal structure of the first cover plate 10 and the second cover plate can be finished by adopting one-step processing procedure, so that the process flow is simplified.
The supporting members 20 in the first concave portion 11 and the second concave portion have one end connected to the edge of the cavity and the other end not connected to the edge of the cavity, and the connecting positions of the supporting members 20 and the cavity are alternately exchanged in a zigzag manner, and the internal structure of the first cover plate 10 is symmetrical to the internal structure of the second cover plate as shown in fig. 3.
In S4 and S5, the first cover plate 10 and the second cover plate and the supporting member 20 in the cavity are connected together by brazing.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims (8)

1. The soaking plate structure without the liquid absorption core is characterized by comprising a first cover plate (10) and a second cover plate which are symmetrically arranged, wherein the first cover plate (10) and the second cover plate are mutually covered to form a cavity, and a plurality of supporting pieces (20) are arranged in the cavity; and the cavity is filled with working medium.
2. A wick-less vapor chamber structure according to claim 1, wherein the inner surfaces of the first cover plate (10) and the second cover plate are provided with a first concave portion (11) and a second concave portion, respectively, which are symmetrical to each other, the first concave portion (11) and the second concave portion defining the cavity together; the plurality of supports (20) are arranged in the first recess (11) or the second recess.
3. A wick-less vapor chamber structure according to claim 2, wherein a plurality of said support members (20) are symmetrically disposed within said first recess (11) and said second recess.
4. Vapor-equalizing plate structure without wick according to claim 3, characterized in that the support (20) is an elongated structure.
5. Vapor chamber structure without wick according to claim 4, characterized in that both ends of said support (20) are not connected to the edges of said cavity, a plurality of said supports (20) being arranged side by side.
6. Vapor-equalizing plate structure without wick according to claim 4, characterized in that the support (20) is connected at one end to the edge of the cavity and at the other end not to the edge of the cavity.
7. Vapor-equalizing plate structure without wick according to claim 6, characterized in that said supports (20) are crosswise arranged in a "zigzag" pattern.
8. A method of manufacturing a wick-less vapor chamber structure according to any one of claims 1 to 7,
the first cover plate (10) and the second cover plate are formed in an etching or stamping mode; the first cover plate (10) and the second cover plate and the support (20) are welded and sealed in a brazing or pressure welding mode.
CN202010767496.0A 2020-08-03 2020-08-03 Soaking plate structure without liquid absorption core and preparation method thereof Pending CN112077547A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022147861A1 (en) * 2021-01-11 2022-07-14 东莞领杰金属精密制造科技有限公司 Manufacturing method for vapor chamber, vapor chamber and middle frame vapor chamber

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Publication number Priority date Publication date Assignee Title
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Application publication date: 20201215