CN113008061B - Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure - Google Patents

Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure Download PDF

Info

Publication number
CN113008061B
CN113008061B CN202110313901.6A CN202110313901A CN113008061B CN 113008061 B CN113008061 B CN 113008061B CN 202110313901 A CN202110313901 A CN 202110313901A CN 113008061 B CN113008061 B CN 113008061B
Authority
CN
China
Prior art keywords
vein
condensation
channel
bionic
center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110313901.6A
Other languages
Chinese (zh)
Other versions
CN113008061A (en
Inventor
刘楷钊
胡艳鑫
黄金
林琳
苏梓沛
颜奕波
谢晓雪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN202110313901.6A priority Critical patent/CN113008061B/en
Publication of CN113008061A publication Critical patent/CN113008061A/en
Application granted granted Critical
Publication of CN113008061B publication Critical patent/CN113008061B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catching Or Destruction (AREA)

Abstract

The application discloses ultra-thin bionic vein gradient wick structure's soaking plate condensation end includes: the condensation end main body and the central liquid suction core are arranged on the condensation end main body; a condensation center and a bionic vein channel are arranged on the first end face of the condensation end main body; the central liquid suction core is arranged in the condensation center; the bionic vein channel diverges towards the periphery along the condensation center and is communicated with the central liquid suction core. The bionic vein channel and the central liquid suction core are arranged on the condensation end main body, and the central liquid suction core is used as a liquid suction center and is used for conveying the vapor chamber condensation working medium to the evaporation end; the gas working medium is condensed into liquid on the surface of the condensation end main body, and the liquid working medium flows through the bionic vein channel and is converged to flow to the central liquid suction core, so that the working medium reflux rate is increased, the condensation reflux performance of the flat heat pipe is improved, the circulation of the heat transfer working medium is facilitated, the heat transfer efficiency is improved, the temperature is more quickly balanced, and the temperature uniformity is better. The problem that the reflux of the existing soaking plate is not perfect enough and is not beneficial to the circulation of a heat transfer medium is effectively solved.

Description

一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端Condensing end of a vapor chamber with an ultra-thin bionic leaf vein gradient wick structure

技术领域technical field

本申请涉及均热板技术领域,尤其涉及一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端。The present application relates to the technical field of vapor chambers, and in particular, to a condensation end of a vapor chamber with an ultra-thin bionic leaf vein gradient liquid-absorbing core structure.

背景技术Background technique

在热交换领域,换热管技术能够利用工质相变过程的潜热把高密度热流及时转移,从而成为解决散热问题的有效方法。而平板热管是一种根据热管工作原理而设计的新型散热介质,工作原理与热管相似,但是与热管一维线性的传热方式相比,平板热管的传热方式为二维面上传热,因此具有更好的传热性能与均温性。平板热管主要结构有外壳、吸液芯、工质等,工作原理为当热量由热源通过平板热管的蒸发区时,在低真空度的腔体内,工质液体沸腾气化,在压力差的作用下,气体流向冷凝区,遇冷凝结放热,并在毛细力的作用下沿吸液芯回流回蒸发区,而冷凝面的热量由平板热管外部其他散热方式带走。虽然工作原理相似,但是与热管一维线性的传热方式相比,平板热管的传热方式为二维面上传热,因此具有更好的传热性能与均温性。In the field of heat exchange, heat exchange tube technology can use the latent heat of the phase change process of the working medium to transfer high-density heat flow in time, thus becoming an effective method to solve the problem of heat dissipation. The plate heat pipe is a new type of heat dissipation medium designed according to the working principle of the heat pipe. The working principle is similar to that of the heat pipe. Has better heat transfer performance and temperature uniformity. The main structure of the flat heat pipe includes shell, liquid absorption core, working medium, etc. The working principle is that when the heat passes through the evaporation area of the flat heat pipe from the heat source, in the cavity of low vacuum degree, the working medium liquid boils and vaporizes, and the effect of the pressure difference Under the action of capillary force, the gas flows to the condensation area, and when it encounters condensation, it releases heat and flows back to the evaporation area along the wick under the action of capillary force, and the heat on the condensation surface is taken away by other heat dissipation methods outside the flat heat pipe. Although the working principle is similar, compared with the one-dimensional linear heat transfer method of the heat pipe, the heat transfer method of the plate heat pipe is two-dimensional surface heat transfer, so it has better heat transfer performance and temperature uniformity.

随着科技的发展,热管的种类越来越丰富。目前,按结构形式区分可分为普通热管、分离式热管、毛纫泵回路热管、微型热管、平板热管、径向热管等;其中平板热管由于其具有较大的热扩散面积而被广泛使用。而现有的平板热管往往回流功能不够完善,不利于传热介质的循环。With the development of science and technology, the types of heat pipes are becoming more and more abundant. At present, according to the structure, it can be divided into ordinary heat pipes, separate heat pipes, wool pump loop heat pipes, micro heat pipes, flat heat pipes, radial heat pipes, etc. Among them, flat heat pipes are widely used because of their large heat diffusion area. However, the existing flat-plate heat pipes often have insufficient reflow function, which is not conducive to the circulation of the heat transfer medium.

发明内容SUMMARY OF THE INVENTION

有鉴于此,本申请的目的是提供一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,用于解决现有的均热板回流不够完善,不利于传热介质的循环的问题。In view of this, the purpose of this application is to provide an ultra-thin bionic leaf vein gradient liquid absorbing core structure of the cooling end of the soaking plate, which is used to solve the problem that the existing soaking plate reflux is not perfect, which is not conducive to the circulation of the heat transfer medium. question.

为达到上述技术目的,本申请提供一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,其特征在于,包括:冷凝端主体与中心吸液芯;In order to achieve the above-mentioned technical purpose, the present application provides an ultra-thin cooling end of a soaking plate with a bionic leaf vein gradient liquid-absorbing core structure, which is characterized in that it includes: a main body of the condensation end and a central liquid-absorbing core;

所述冷凝端主体的第一端面上设置有冷凝中心以及仿生叶脉槽道;A condensation center and a bionic leaf vein channel are arranged on the first end surface of the condensation end main body;

所述中心吸液芯设置于所述冷凝中心;The central liquid-absorbing wick is arranged in the condensation center;

所述仿生叶脉槽道沿所述冷凝中心往外周发散且与所述中心吸液芯相连通。The bionic leaf vein channel diverges to the outer periphery along the condensation center and communicates with the central liquid absorbent core.

优选地,还包括周向吸液芯;Preferably, it also includes a circumferential absorbent core;

所述周向吸液芯设置于所述冷凝端主体上,连通所述仿生叶脉槽道,且绕所述中心吸液芯呈圆周均布。The circumferential liquid-absorbing core is arranged on the condensation end main body, communicates with the bionic leaf vein channel, and is evenly distributed around the central liquid-absorbing core.

优选地,所述仿生叶脉槽道具体包括一级叶脉槽道、二级叶脉槽道与间隔槽道;Preferably, the bionic vein channel specifically includes a first-level vein channel, a second-level vein channel and an interval channel;

所述一级叶脉槽道连通所述中心吸液芯且绕所述冷凝中心发散性圆周均布;The first-level vein channels are connected to the central liquid absorbing core and are evenly distributed around the condensing center divergent circumference;

所述间隔槽道设置于相邻所述一级叶脉槽道之间,且连通所述中心吸液芯;The interval channel is arranged between the adjacent first-level vein channels and communicates with the central liquid absorbing core;

所述二级叶脉槽道连通所述间隔槽道与一级叶脉槽道。The secondary vein channel communicates with the interval channel and the primary vein channel.

优选地,所述一级叶脉槽道的槽宽由末端往所述冷凝中心方向渐缩。Preferably, the groove width of the first-stage vein channel is tapered from the end toward the condensation center.

优选地,所述二级叶脉槽道的槽宽由所述间隔槽道往所述一级叶脉槽道方向渐缩。Preferably, the groove width of the secondary vein channel is tapered from the interval channel to the direction of the primary vein channel.

优选地,所述周向吸液芯设置于所述冷凝端主体的外周与所述中心吸液芯之间的二等分位置。Preferably, the circumferential liquid-absorbent core is disposed at a bisected position between the outer circumference of the condensation end main body and the central liquid-absorbent core.

优选地,所述中心吸液芯与周向吸液芯具体均为金属丝网烧结成型的多孔结构或泡沫金属烧结成型的多孔结构。Preferably, the central liquid-absorbent core and the circumferential liquid-absorbent core are each a porous structure formed by sintering a metal wire mesh or a porous structure formed by sintering a metal foam.

优选地,所述冷凝端主体往所述第一端面方向凸起,且厚度沿所述冷凝中心往外周逐渐减小。Preferably, the condensation end main body is convex toward the first end face, and the thickness gradually decreases along the condensation center toward the outer periphery.

优选地,所述仿生叶脉槽道沿槽道的末端往所述冷凝中心疏水性递减。Preferably, the hydrophobicity of the bionic leaf vein channel decreases toward the condensation center along the end of the channel.

优选地,所述槽道表面的递增疏水性为通过化学刻蚀结合浸涂处理得到。Preferably, the increasing hydrophobicity of the surface of the channel is obtained by chemical etching combined with dip coating treatment.

从以上技术方案可以看出,本申请提供一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,包括:冷凝端主体与中心吸液芯;所述冷凝端主体的第一端面上设置有冷凝中心以及仿生叶脉槽道;所述中心吸液芯设置于所述冷凝中心;所述仿生叶脉槽道沿所述冷凝中心往外周发散且与所述中心吸液芯相连通。通过在冷凝端主体上设置仿生叶脉槽道与中心吸液芯,中心吸液芯作为吸液中心,用于将均热板冷凝工质输向蒸发端;气体工质在冷凝端主体表面冷凝为液态,液态工质通过仿生叶脉槽道流动汇聚流向中心吸液芯,因此加快了工质回流速率,改善平板热管的冷凝回流性能,有利于传热工质的循环,提高了传热效率,使温度更快达到平衡,均温性更好。有效的解决现有的均热板回流不够完善,不利于传热介质的循环的问题。It can be seen from the above technical solutions that the present application provides an ultra-thin bionic leaf vein gradient liquid absorbing core structure with a cooling end of a vapor chamber, including: a condensation end main body and a central liquid absorbing core; a first end face of the condensation end main body A condensation center and a bionic leaf vein channel are arranged on the top; the central liquid absorbing core is arranged on the condensation center; the bionic leaf vein channel diverges to the outer periphery along the condensation center and communicates with the central liquid suction core. By arranging the bionic leaf vein channel and the central liquid-absorbing core on the main body of the condensation end, the central liquid-absorbing core is used as the liquid absorption center to transport the condensed working medium of the soaking plate to the evaporation end; the gas working medium is condensed on the surface of the main body of the condensation end as In liquid state, the liquid working medium flows and converges to the central liquid absorbing core through the bionic vein channel, so the reflux rate of the working medium is accelerated, the condensation and reflux performance of the flat heat pipe is improved, the circulation of the heat transfer working medium is facilitated, the heat transfer efficiency is improved, and the heat transfer efficiency is improved. The temperature reaches equilibrium faster and the temperature uniformity is better. It effectively solves the problem that the existing soaking plate reflow is not perfect and is not conducive to the circulation of the heat transfer medium.

附图说明Description of drawings

为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

图1为本申请实施例提供的一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端的正视图图;1 is a front view of a condensation end of a vapor chamber of an ultra-thin bionic leaf vein gradient liquid absorbing core structure provided by an embodiment of the application;

图2为本申请实施例提供的一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端的立体图;2 is a perspective view of a condensation end of a vapor chamber of an ultra-thin bionic leaf vein gradient liquid-absorbing core structure provided by an embodiment of the application;

图中:1、冷凝端主体;2、中心吸液芯;3、仿生叶脉槽道;4、周向吸液芯;31、一级叶脉槽道;32、二级叶脉槽道;33、间隔槽道。In the figure: 1. The main body of the condensation end; 2. The central suction core; 3. The bionic vein channel; 4. The circumferential suction core; 31. The first-level vein channel; 32. The second-level vein channel; 33. Interval channel.

具体实施方式Detailed ways

下面将结合附图对本申请实施例的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请的一部分实施例,而不是全部的实施例。基于本申请实施例中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请所请求保护的范围。The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the scope of the claimed protection of the present application.

在本申请实施例的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请实施例和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请实施例的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, It is constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

在本申请实施例的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可更换连接,或一体地连接,可以是机械连接,也可以是电连接,可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本申请实施例中的具体含义。In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a The interchangeable connection, or the integral connection, can be a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application in specific situations.

本申请实施例公开了一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端。The embodiment of the present application discloses an ultra-thin bionic leaf vein gradient liquid absorbing core structure with a cooling end of a vapor chamber.

请参阅图1,本申请实施例中提供的一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,包括:冷凝端主体1与中心吸液芯2;冷凝端主体1的第一端面上设置有冷凝中心以及仿生叶脉槽道3;中心吸液芯2设置于冷凝中心;仿生叶脉槽道3沿冷凝中心往外周发散且与中心吸液芯2相连通。Referring to FIG. 1 , the cooling end of the vaporizing plate of an ultra-thin bionic leaf vein gradient liquid absorbing core structure provided in the embodiment of the present application includes: a condensation end main body 1 and a central liquid absorbing core 2 ; One end face is provided with a condensation center and a bionic leaf vein channel 3; the central liquid absorbing core 2 is arranged in the condensation center;

具体来说,气体工质在冷凝端主体1表面冷凝为液态后分布于仿生叶脉槽道3上,而仿生叶脉槽道3连通冷凝中心的中心吸液芯2;中心吸液芯2可以采用利用毛细作用的结构,借助毛细作用也即毛细作用力实现吸液,使液态工质由仿生叶脉槽道3汇聚到中心吸液芯2上,促进槽道液体工质的流动,之后传给蒸发端,促进均热板内工质构成循环回路,实现相变工质的相变与传热。Specifically, the gas working medium is condensed into a liquid state on the surface of the main body 1 of the condensation end, and then distributed on the bionic vein channel 3, and the bionic vein channel 3 is connected to the central liquid absorbing core 2 in the condensation center; the central liquid absorbing core 2 can use the The structure of capillary action realizes liquid absorption by means of capillary action, that is, capillary force, so that the liquid working medium is gathered from the bionic leaf vein channel 3 to the central liquid suction core 2, which promotes the flow of the liquid working medium in the channel, and then transmits it to the evaporation end. , to promote the working medium in the soaking plate to form a circulation loop, and realize the phase change and heat transfer of the phase change working medium.

以上为本申请实施例提供的实施例一,以下为本申请提供的实施例二,具体请参阅图1与图2。The above is the first embodiment provided by the embodiments of the present application, and the following is the second embodiment provided by the present application. For details, please refer to FIG. 1 and FIG. 2 .

一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,包括:冷凝端主体1与中心吸液芯2;冷凝端主体1的第一端面上设置有冷凝中心以及仿生叶脉槽道3;中心吸液芯2设置于冷凝中心;仿生叶脉槽道3沿冷凝中心往外周发散且与中心吸液芯2相连通。An ultra-thin bionic leaf vein gradient liquid absorbing core structure with a cooling end of a soaking plate, comprising: a condensation end main body 1 and a central liquid absorbing core 2; a first end surface of the condensation end main body 1 is provided with a condensation center and a bionic vein channel 3. The central liquid absorbing core 2 is arranged in the condensation center; the bionic leaf vein channel 3 diverges to the outer periphery along the condensation center and communicates with the central liquid absorbing core 2 .

进一步地,还包括周向吸液芯4;周向吸液芯4绕中心吸液芯2圆周均布设置于冷凝端主体1上,且与仿生叶脉槽道连通,通过仿生叶脉槽道3连通中心吸液芯2。Further, it also includes a circumferential liquid-absorbing core 4; the circumferential liquid-absorbing core 4 is evenly arranged on the condensation end main body 1 around the circumference of the central liquid-absorbing core 2, and is communicated with the bionic leaf vein groove, and communicated through the bionic leaf vein groove 3. Center wick 2.

具体来说,周向吸液芯4作为辅助吸液中枢,连通仿生叶脉槽道3,能吸收周围液态工质并直接传递给蒸发端,同时还起到支撑冷凝端主体1的作用。Specifically, the circumferential liquid-absorbing core 4 acts as an auxiliary liquid-absorbing center, which is connected to the bionic vein channel 3, can absorb the surrounding liquid working medium and directly transmit it to the evaporation end, and also plays the role of supporting the main body 1 of the condensation end.

进一步地,仿生叶脉槽道3具体包括一级叶脉槽道31、二级叶脉槽道32与间隔槽道33;一级叶脉槽道31连通中心吸液芯2且绕冷凝中心发散性圆周均布;间隔槽道33设置于相邻的一级叶脉槽道31之间,且连通中心吸液芯2;二级叶脉槽道32连通间隔槽道33与一级叶脉槽道31。Further, the bionic vein channel 3 specifically includes a first-level vein channel 31, a second-level vein channel 32 and an interval channel 33; the first-level vein channel 31 communicates with the central suction core 2 and is evenly distributed around the center of the condensation center. The interval channel 33 is arranged between the adjacent first-level vein channels 31, and communicates with the central suction core 2;

具体来说,在本实施例中,间隔槽道33与一级叶脉槽道31均连通中心吸液芯2,且绕中心吸液芯2呈圆周发散性间隔分布;二级叶脉槽道32作为一级叶脉槽道31的分支,分别连通间隔槽道33与一级叶脉槽道31;间隔槽道33收集的液态工质经一级叶脉槽道31汇聚至中心吸液芯2,使得冷凝端主体1表面温度更加均匀。Specifically, in this embodiment, the interval channel 33 and the primary vein channel 31 are both connected to the central liquid absorbent core 2, and are distributed at a circumferentially divergent interval around the central liquid absorbent core 2; the secondary vein channel 32 serves as a The branches of the first-level vein channel 31 are respectively connected to the interval channel 33 and the first-level vein channel 31; the liquid working medium collected by the interval channel 33 converges to the central liquid suction core 2 through the first-level vein channel 31, so that the condensation end The surface temperature of the main body 1 is more uniform.

进一步地,一级叶脉槽道31的槽宽由末端往冷凝中心方向渐缩;二级叶脉槽道32的槽宽由间隔槽道33往一级叶脉槽道31方向渐缩;仿生叶脉槽道3的沿槽道的末端往冷凝中心疏水性递减。Further, the groove width of the primary vein channel 31 is tapered from the end to the direction of the condensation center; the groove width of the secondary vein channel 32 is tapered from the interval channel 33 to the direction of the primary vein channel 31; the bionic vein channel The hydrophobicity of 3 decreases along the end of the channel towards the condensation center.

具体来说,气体工质在冷凝端主体1表面冷凝为液态,液态工质通过槽道流动,槽宽渐缩的槽道利用叶脉尖端不断增大的毛细力,使得宽槽道处的液态工质自发流向窄槽道,即工质通过间隔槽道经二级叶脉槽道32流向一级叶脉槽道31,进而汇聚至中心吸液芯2。Specifically, the gas working medium is condensed into a liquid state on the surface of the main body 1 of the condensing end, and the liquid working medium flows through the channel. The mass spontaneously flows to the narrow channel, that is, the working medium flows through the interval channel through the secondary vein channel 32 to the primary vein channel 31, and then converges to the central wick 2.

同时,槽道表面覆有疏水性涂层,且疏水性由末端往冷凝中心方向递减;具体来说,二级叶脉槽道32上的疏水性由连接间隔槽道33端往连接一级叶脉槽道31端递减;一级叶脉槽道31上的疏水性由末端往冷凝中心方向上递减。At the same time, the surface of the channel is covered with a hydrophobic coating, and the hydrophobicity decreases from the end to the center of condensation; specifically, the hydrophobicity on the secondary vein channel 32 is connected from the end of the connecting interval channel 33 to the connecting primary vein groove. The end of the channel 31 decreases; the hydrophobicity on the primary vein channel 31 decreases from the end to the direction of the condensation center.

在本实施例中,槽道表面的递增疏水性为通过化学刻蚀结合浸涂处理得到,具体采用过氧化氢溶液进行刻蚀,再以硝酸银水溶液处理,最后以含乙醇、盐酸和全氟十二烷基三乙氧基硅烷(PFDTES)的混合溶液进行处理。In this embodiment, the increasing hydrophobicity of the surface of the channel is obtained by chemical etching combined with dip coating treatment, specifically using hydrogen peroxide solution for etching, then treatment with silver nitrate aqueous solution, and finally with ethanol, hydrochloric acid and perfluorinated water. The mixed solution of dodecyltriethoxysilane (PFDTES) was treated.

进一步地,周向吸液芯4设置于冷凝端主体1的外周与中心吸液芯2之间的二等分位置。具体来说,在本实施例中,冷凝端主体1为圆形,周向吸液芯4绕冷凝中心圆周等角度均匀分布,且设置在距中心二分之一半径处。Further, the circumferential liquid-absorbent wick 4 is disposed at a bisected position between the outer circumference of the condensation end main body 1 and the central liquid-absorbent core 2 . Specifically, in this embodiment, the main body 1 of the condensation end is circular, and the circumferential liquid-absorbing wicks 4 are evenly distributed at equal angles around the circumference of the condensation center, and are arranged at a half radius from the center.

进一步地,中心吸液芯2与周向吸液芯4具体均为金属丝网烧结成型的多孔结构或泡沫金属烧结成型的多孔结构。Further, the central liquid-absorbent core 2 and the circumferential liquid-absorbent core 4 are specifically a porous structure formed by sintering a wire mesh or a porous structure formed by sintering a foamed metal.

需要说明的是,吸液芯是多孔结构,空隙远小于槽道,因此毛细力比槽道大,会吸收周围的液体储存起来,并直接传递给蒸发端,快速补充蒸发掉的液体工质。It should be noted that the wick is a porous structure, and the gap is much smaller than the channel, so the capillary force is larger than that of the channel, which will absorb the surrounding liquid and store it, and transfer it directly to the evaporation end to quickly replenish the evaporated liquid working medium.

具体来说,中心吸液芯2与周向吸液芯4利用毛细作用的结构,借助毛细作用也即毛细作用力实现吸液,促进槽道液体工质的流动,所吸液体工质流向蒸发端,促进均热板内工质构成循环回路,实现相变工质的相变与传热。吸液芯结构为铜金属丝网烧结成型的多孔结构,也即吸液芯为铜丝网制成。Specifically, the central liquid-absorbing core 2 and the circumferential liquid-absorbing core 4 use the capillary action structure to achieve liquid absorption by means of capillary action, that is, capillary force, to promote the flow of the liquid working medium in the channel, and the absorbed liquid working medium flows to the evaporation direction. At the end, it promotes the working medium in the soaking plate to form a circulation loop, and realizes the phase change and heat transfer of the phase change working medium. The liquid-absorbing core structure is a porous structure formed by sintering copper wire mesh, that is, the liquid-absorbing core is made of copper wire mesh.

本实施例中,冷凝端主体1上预留有供中心吸液芯与轴向吸液芯烧结用的凹槽;周向吸液芯4支撑柱结构直径为4mm,吸液芯结构的厚度为1mm,烧结于冷凝端主体1表面预留的凹槽上。冷凝端主体边缘厚度为0.3-0.4mm。铜吸液芯结构烧结温度为900℃。In this embodiment, a groove for sintering the central liquid-absorbing core and the axial liquid-absorbing core is reserved on the main body 1 of the condensation end; the diameter of the support column structure of the circumferential liquid-absorbing core 4 is 4 mm, and the thickness of the liquid-absorbing core structure is 1mm, sintered on the groove reserved on the surface of the main body 1 of the condensation end. The thickness of the edge of the main body of the condensation end is 0.3-0.4mm. The sintering temperature of the copper wick structure is 900°C.

进一步的,一级叶脉槽道31远心端宽度为0.8-1.0mm,近心端宽度为0.1-0.3mm;二级叶脉槽道32宽度最大为0.8mm,最小为0.2-0.3mm,槽道深度为0.2-0.6mm。Further, the width of the distal end of the primary vein channel 31 is 0.8-1.0mm, and the width of the proximal end is 0.1-0.3mm; the width of the secondary vein channel 32 is 0.8mm at the maximum and 0.2-0.3mm at the minimum. The depth is 0.2-0.6mm.

进一步地,冷凝端主体1的第一端面凸起设置,且厚度沿冷凝中心往外周逐渐减小。Further, the first end face of the condensation end main body 1 is convexly arranged, and the thickness gradually decreases along the condensation center toward the outer periphery.

具体来说,实际使用中,冷凝端主体1可以是采用将第一端面朝下的安装方式;第一端面凸起,使得液态工质在仿生叶脉槽道3内流动过程中,可以在重力作用下由厚度薄的位置流向厚度大的冷凝中心,使得液态工质由二级叶脉槽道32流向一级叶脉槽道31,由一级叶脉槽道31汇聚流向中心吸液芯2。Specifically, in actual use, the condensing end main body 1 may be installed with the first end face downward; the first end face is convex, so that the liquid working medium can flow under the gravity during the flow in the bionic vein channel 3 . Under the action, it flows from the thin position to the thick condensation center, so that the liquid working medium flows from the secondary vein channel 32 to the primary vein channel 31, and the primary vein channel 31 converges and flows to the central suction core 2.

本申请实施例提供一种超薄的仿生叶脉梯度吸液芯结构的均热板冷凝端,采用仿叶脉梯度吸液芯结构,包括具有仿生叶脉槽道3的均热板本体1以及吸液芯,仿生叶脉槽道3汇聚至中心吸液芯以供冷凝工质回流;吸液芯分布在冷凝中心以及四周,中心吸液芯2作为吸液中心,用于将均热板冷凝工质输向蒸发端,周向吸液芯4作为辅助吸液中枢以及均热板本体1的支撑点。气体工质在冷凝端主体表面冷凝为液态,在重力作用下由厚度薄的流向厚度大的部分,同时由于槽道疏水性梯度与槽宽渐缩的作用,渐缩的疏水性槽道利用叶脉尖端不断增大的毛细力,使得宽槽道处的液态工质自发流向窄槽道,即工质通过间隔槽道的远中心端流向近中心端,通过二级叶脉槽道32流向一级叶脉槽道31,进而汇聚至中心吸液芯2。由于周向吸液芯4与中心吸液芯均为多孔结构;周向吸液芯4作为吸液中枢能吸收周围槽道吸收的工质,空隙远小于槽道,因此毛细力比槽道大,会吸收周围的液体储存起来,并直接传递给蒸发端,快速补充蒸发掉的液体工质,同时还起到支撑冷凝端和蒸发端的作用。吸液芯汇聚的液态工质输送给均热板的蒸发端。因此加快了工质回流速率,改善平板热管的冷凝回流性能,有利于传热工质的循环,提高了传热效率,使温度更快达到平衡,均温性更好。The embodiment of the present application provides an ultra-thin cooling end of a soaking plate with a bionic leaf vein gradient liquid absorbing core structure, which adopts a leaf vein gradient liquid absorbing core structure, and includes a soaking plate body 1 with a bionic leaf vein channel 3 and a liquid absorbing core , the bionic leaf vein channel 3 converges to the central liquid absorption core for the backflow of the condensing working medium; the liquid absorption core is distributed in the condensation center and around, and the central liquid absorption core 2 is used as the liquid absorption center, which is used to transport the condensing working medium of the soaking plate to the At the evaporation end, the circumferential liquid wick 4 serves as the auxiliary liquid absorbing center and the support point of the vapor chamber body 1 . The gas working medium is condensed into a liquid state on the surface of the main body of the condensing end, and flows from the thin part to the thick part under the action of gravity. At the same time, due to the effect of the hydrophobic gradient of the channel and the tapering of the groove width, the tapered hydrophobic channel uses the leaf veins. The ever-increasing capillary force at the tip makes the liquid working medium at the wide channel spontaneously flow to the narrow channel, that is, the working medium flows through the distal end of the interval channel to the near central end, and flows through the secondary vein channel 32 to the primary vein. The channel 31 then converges to the central absorbent core 2 . Since the circumferential liquid-absorbing core 4 and the central liquid-absorbing core are both porous structures; the circumferential liquid-absorbing core 4, as the liquid-absorbing center, can absorb the working fluid absorbed by the surrounding channels, and the gap is much smaller than that of the channel, so the capillary force is larger than that of the channel. , it will absorb the surrounding liquid and store it, and directly transfer it to the evaporation end, quickly replenish the evaporated liquid working medium, and also play the role of supporting the condensation end and the evaporation end. The liquid working medium gathered by the wick is delivered to the evaporation end of the soaking plate. Therefore, the reflux rate of the working medium is accelerated, the condensation and reflux performance of the flat heat pipe is improved, the circulation of the heat transfer working medium is facilitated, the heat transfer efficiency is improved, the temperature reaches equilibrium faster, and the temperature uniformity is better.

以上为本申请的优选实施例而已,并不用于限制本发明,尽管参照实例对本申请进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述实例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换,但是凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。The above are only preferred embodiments of the application, and are not intended to limit the present invention. Although the application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the foregoing examples. , or equivalently replace some of its technical features, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (6)

1. The utility model provides an ultra-thin bionical vein gradient imbibition core structure's vapor chamber condensation end which characterized in that includes: the condensation end comprises a condensation end main body, a central liquid suction core and a circumferential liquid suction core;
a condensation center and a bionic vein channel are arranged on the first end surface of the condensation end main body;
the central liquid suction core is arranged in the condensation center;
the bionic vein channel is diffused towards the periphery along the condensation center and is communicated with the central liquid suction core;
the circumferential liquid absorption cores are arranged on the condensation end main body, communicated with the bionic vein channels and uniformly distributed around the central liquid absorption core in a circumferential manner;
the bionic vein channel specifically comprises a primary vein channel, a plurality of secondary vein channels and spacing channels;
the primary vein channels are communicated with the central liquid suction core and are uniformly distributed around the condensation center divergent circumference;
the spacing channels are arranged between adjacent primary vein channels and are communicated with the central liquid suction core;
the secondary vein channels extend along the primary vein channels in a diverging manner towards two sides, one end of each secondary vein channel is communicated with the primary vein channel, and the other end of each secondary vein channel is communicated with the adjacent spacing channel;
the central liquid absorbing core and the circumferential liquid absorbing core are both porous structures with the aperture smaller than the groove width of the bionic vein channel;
the groove width of the primary vein channel is gradually reduced from the tail end to the condensation center;
the groove width of the secondary vein channel is gradually reduced from the spacing channel to the primary vein channel.
2. The vapor chamber condensation end of an ultrathin bionic vein gradient wick structure according to claim 1, wherein a hydrophobic structure with gradually decreasing hydrophobicity is arranged inside the bionic vein channel from the tail end of the channel to the condensation center.
3. The vapor chamber condensation end of an ultrathin biomimetic vein gradient wick structure according to claim 2, wherein the hydrophobic structure is obtained by chemical etching and dip coating.
4. A soaking plate cold end of an ultra-thin biomimetic vein gradient wick structure according to claim 1, wherein the circumferential wick is disposed at a bisecting position between the periphery of the cold end body and the central wick.
5. The vapor chamber condensation end of an ultrathin bionic vein gradient wick structure according to claim 1, wherein the central wick and the circumferential wick are both porous structures formed by sintering a wire mesh or porous structures formed by sintering a foam metal.
6. A soaking plate cold end of an ultra-thin biomimetic vein gradient wick structure according to claim 1, wherein the cold end body is convex toward the first end face, and the thickness gradually decreases along the cold center toward the outer periphery.
CN202110313901.6A 2021-03-24 2021-03-24 Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure Active CN113008061B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110313901.6A CN113008061B (en) 2021-03-24 2021-03-24 Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110313901.6A CN113008061B (en) 2021-03-24 2021-03-24 Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure

Publications (2)

Publication Number Publication Date
CN113008061A CN113008061A (en) 2021-06-22
CN113008061B true CN113008061B (en) 2022-07-08

Family

ID=76406169

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110313901.6A Active CN113008061B (en) 2021-03-24 2021-03-24 Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure

Country Status (1)

Country Link
CN (1) CN113008061B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114754612A (en) * 2022-04-14 2022-07-15 华南师大(清远)科技创新研究院有限公司 Bionic structure ultra-thin flat heat pipe
CN115072009A (en) * 2022-06-13 2022-09-20 南京航空航天大学 Foot pad support of bionic royal lotus leaf vein structure
CN115135109B (en) * 2022-07-12 2024-07-16 哈尔滨工业大学 Temperature equalization plate structure and electronic equipment for inclined use at any angle
CN115371479A (en) * 2022-08-22 2022-11-22 新疆华奕新能源科技有限公司 A biomimetic spider web partition wall heat exchanger installed in a mountain valley

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102706193B (en) * 2012-06-28 2014-07-02 华南理工大学 Radial gradually-wide type fin-structure grooved panel heat pipe and processing method thereof
CN202738359U (en) * 2012-07-31 2013-02-13 华南理工大学 Imbibition core structure of isothermal plate
TW201518671A (en) * 2013-11-08 2015-05-16 Hao Pai Flat wick structure and vapor chamber having the same
CN104089508B (en) * 2014-06-19 2016-05-04 华南理工大学 A kind of manufacture method of liquid-sucking core
CN205482499U (en) * 2016-02-05 2016-08-17 江苏科技大学 Porous wick's of plane direction gradient temperature -uniforming plate
CN106152846B (en) * 2016-07-09 2017-04-05 南京艾科美热能科技有限公司 A kind of circulating gas-liquid two-phase flow phase change heat exchanger
CN107401941B (en) * 2017-08-28 2023-09-26 华南理工大学 Ultrathin soaking plate structure
CN108444324B (en) * 2018-06-22 2024-06-11 广东工业大学 Soaking plate
CN110108139A (en) * 2019-04-26 2019-08-09 华南理工大学 A kind of soaking plate with support column and groove composite construction

Also Published As

Publication number Publication date
CN113008061A (en) 2021-06-22

Similar Documents

Publication Publication Date Title
CN113008061B (en) Soaking plate condensation end of ultrathin bionic vein gradient liquid absorption core structure
CN220343691U (en) Heating components, atomizers and electronic atomization devices
CN218921694U (en) Heating element, atomizer and electronic atomization device
CN110828404A (en) A microchannel vapor chamber with a cavity structure
JP4434677B2 (en) Loop heat pipe evaporator
CN113295027B (en) Self-refluxing flat heat pipe
WO2025082163A1 (en) Atomizer and aerosol generating device
CN217486819U (en) Ultra-thin vapor chamber and electronic equipment
CN210004837U (en) A heat pipe with increased strength
CN209978684U (en) Heat pipe capable of enhancing capillary suction
CN207881541U (en) Loop heat pipe with auxiliary infusion pipeline
CN114501946A (en) Ultra-thin soaking plate and preparation method thereof, and electronic equipment
CN217390004U (en) Atomizing core, atomizer and electronic atomization device
CN216592927U (en) Heat pipe
CN209978683U (en) Heat pipe capable of reducing heat transfer obstruction
CN110044192A (en) A kind of heat pipe that can enhance capillary attraction
CN111692905A (en) Heat exchange tube fin, heat exchange tube and air conditioner
CN222656767U (en) Electric rice cooker
CN222109273U (en) Porous matrix and atomizer core
CN217686775U (en) a heat pipe
CN205119902U (en) Improved heat pipe
CN211903868U (en) An ultra-thin heat pipe
CN116603192B (en) Evaporator for loop heat pipe with bionic tree transpiration effect and loop heat pipe
CN221449904U (en) Atomizing core and atomizing device
CN221593604U (en) Capillary structure of heat conducting pipe

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant