Bionic wick vapor chamber

Abstract

The utility model relates to a bionic wick vapor chamber. Comprising a bionic liquid absorbing core, a base body is used for containing a liquid working medium, the base body comprises a base body bottom and a plurality of base body bosses arranged on the base body bottom, the base body bosses are evenly distributed in a step-by-step mode from the center of the base body bottom to the edge of the base body bottom in a radiation mode, and a conveying channel is formed by intervals formed by evenly distributing the base body bosses in a step-by-step mode; the connecting channels extend to the edge of the base body in the radial direction with the center of the base body as the starting point. The conveying channel and the connecting channel are communicated with each other to form a cobweb channel. The bionic wick structure of the vapor chamber is obtained according to the cobweb-shaped topology of the nature, the transport channel and the connecting channel are communicated with each other to form a cobweb channel, a good backflow path is provided for the phase change working medium of the vapor chamber, the phenomenon that the working medium is dried up is not prone to occurring, the heat conduction capacity is better, and the service life of the vapor chamber is prolonged. The base body boss has a supporting effect on the upper shell and the cavity, the number of the supporting columns is reduced, and therefore the weight reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation and temperature averaging plates, in particular to a bionic liquid-absorbing core temperature averaging plate. Background Art

[0002] Traditional heat dissipation technologies mostly transfer the heat generated by electronic equipment to a fin-type heat sink or water-cooled plate with a large heat dissipation area, and then the heat sink or water-cooled plate transfers the heat to the air or coolant through the convection effect, thereby cooling the electronic equipment. However, the use of these two heat dissipation structures alone requires a large working space and economic consumables, and the convective heat transfer coefficient achieved is limited, which cannot meet the heat dissipation needs of high heat flow electronic components in modern industrial fields. The heat spreader can quickly diffuse the input high heat flow to various areas of the evaporation end, and then use the larger condensation surface to cool it in time. It has the advantages of uniform temperature distribution, large condensation area, light weight, good geometric flexibility and high thermal conductivity. It is an ideal solution to solve the current heat dissipation needs. Existing heat spreaders all use ordinary sintered liquid wick structure design. The existing heat spreaders have low thermal conductivity, unsatisfactory isothermal performance, poor working fluid reflux effect, and are prone to drying out.

[0003] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0004] It should be noted that this section is intended to provide background or context for the technical solutions of the present invention as stated in the claims. The description herein is not admitted to be prior art simply by being included in this section. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a bionic liquid wick temperature averaging plate, thereby overcoming one or more problems caused by the limitations and defects of the related art at least to a certain extent.

[0006] The embodiment of the utility model provides a bionic liquid absorbent core temperature equalizing plate, comprising: an upper shell and a cavity, wherein the upper shell is sealedly connected to the cavity, an upper liquid absorbent core is attached to the upper shell, and a bionic liquid absorbent core is attached to the cavity;

[0007] The bionic liquid-absorbing core comprises:

[0008] A base body, the base body is used to accommodate a liquid working medium, the base body comprises a base body bottom and a plurality of base body bosses provided on the base body bottom, the plurality of base body bosses are evenly distributed radially from the center of the base body bottom to the edge of the base body bottom;

[0009] A transport channel, wherein the transport channel is formed by intervals of the base body bosses uniformly distributed radially step by step;

[0010] Connecting channels, wherein a plurality of connecting channels radially extend from the center of the base to the edge of the base;

[0011] The transport channel and the connecting channel are interconnected to form a spider web channel.

[0012] In an embodiment of the present invention, the depth of the upper shell is 1mm-3mm, and the depth of the cavity is 1mm-3mm.

[0013] In an embodiment of the present invention, the upper shell and the cavity are both made of copper plates or the upper shell and the cavity are both made of aluminum plates.

[0014] In one embodiment of the present invention, the upper liquid absorbent core and the bionic liquid absorbent core are both manufactured by vacuum sintering.

[0015] In one embodiment of the present invention, the upper wick is made of copper powder or aluminum powder with a particle size of 0.075mm-0.15mm and is evenly sintered in the upper shell, or is made of foam metal or wire mesh layer wick material structure and is evenly sintered in the upper shell.

[0016] In one embodiment of the present invention, the bionic absorbent core is made of copper powder or aluminum powder with a particle size of 0.075mm-0.15mm and is evenly sintered in the cavity, or a foam metal or wire mesh layer absorbent core material structure is evenly sintered in the cavity.

[0017] In one embodiment of the present invention, the width of the transport channel is 2mm-3mm, and the width of the base boss is 2mm-3mm.

[0018] In one embodiment of the present invention, the thickness of the bottom of the base is 0.5mm-0.8mm.

[0019] In one embodiment of the present invention, the liquid working medium is any one of pure water, acetone, methanol, and ethanol.

[0020] In an embodiment of the present invention, the upper shell and the cavity are connected by vacuum diffusion welding.

[0021] The technical solution provided by an embodiment of the present invention may have the following beneficial effects:

[0022] An embodiment of the utility model provides a bionic liquid-absorbing core temperature averaging plate, and the bionic liquid-absorbing core structure of the temperature averaging plate is obtained according to the topology of the spider web shape in nature. On the one hand, the transport channel and the connecting channel are interconnected to form a spider web channel, which provides a better reflux path for the phase-change working medium of the temperature averaging plate, is less likely to dry up the working medium, and has better thermal conductivity; on the other hand, the base boss has a supporting effect on the upper shell and the cavity, reducing the number of support columns, thereby achieving the effect of weight reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0024] Figure 1 A schematic structural diagram of a bionic liquid wick temperature averaging plate in an exemplary embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the structure of a bionic liquid-absorbing core in an exemplary embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram of the cross-sectional structure of a bionic liquid-absorbing core temperature averaging plate in an exemplary embodiment of the present utility model is shown.

[0027] Reference numerals: 100, upper shell; 200, upper wick; 300, bionic wick; 301, base boss; 302, transport channel; 303, connecting channel; 400, cavity. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] In addition, the accompanying drawings are merely schematic illustrations of embodiments of the present invention and are not necessarily drawn to scale. Identical reference numerals in the drawings represent identical or similar parts, and thus repeated descriptions thereof will be omitted. Some of the blocks shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0030] This example embodiment provides a bionic wick temperature averaging plate, referring to Figure 1 As shown, the bionic wick temperature equalizing plate may include: an upper shell 100 , an upper wick 200 , a bionic wick 300 and a cavity 400 .

[0031] The upper shell 100 is sealed and connected to the cavity 400. The upper absorbent core 200 is attached to the upper shell 100, and the bionic absorbent core 300 is attached to the cavity 400.

[0032] The bionic absorbent core 300 comprises:

[0033] The base is used to accommodate liquid working medium, and the base includes a base bottom and a plurality of base bosses 301 provided on the base bottom. The plurality of base bosses 301 are evenly distributed radially from the center of the base bottom to the edge of the base bottom.

[0034] The transport channel 302 is formed by the intervals of the base boss 301 that are evenly distributed radially step by step;

[0035] The plurality of connecting channels 303 are radially extended from the center of the base to the edge of the base;

[0036] The transport channel 302 and the connecting channel 303 are interconnected to form a spider web channel.

[0037] Through the above-mentioned bionic liquid-absorbing core 300 temperature equalizing plate, the bionic liquid-absorbing core 300 structure of the temperature equalizing plate is obtained according to the topology of the spider web shape in nature. On the one hand, the transport channel 302 and the connecting channel 303 are interconnected to form a spider web channel, which provides a better reflux path for the phase-change working medium of the temperature equalizing plate, is less likely to dry up the working medium, and has better thermal conductivity; on the other hand, the base boss 301 has a supporting effect on the upper shell 100 and the cavity 400, reducing the number of support columns, thereby achieving the effect of weight reduction.

[0038] The following will refer to Figures 1 to 3 The various parts of the temperature averaging plate of the biomimetic absorbent wick 300 in this exemplary embodiment will be described in more detail.

[0039] In one embodiment, the depth of the upper housing 100 is 1 mm to 3 mm, and the depth of the cavity 400 is 1 mm to 3 mm. Both the upper housing 100 and the cavity 400 are made of copper plates or aluminum plates. It should be understood that the upper housing 100 and the cavity 400 are manufactured using a stamping process or precision milling. The depths of the upper housing 100 and the cavity 400 can be adjusted according to specific needs and are not limited thereto.

[0040] In one embodiment, the upper wick 200 and the biomimetic wick 300 are both manufactured using vacuum sintering. The upper wick 200 is made of copper powder with a particle size of 0.075 mm to 0.15 mm, uniformly sintered within the upper housing 100. Alternatively, the upper wick 200 is made of aluminum powder with a particle size of 0.075 mm to 0.15 mm, uniformly sintered within the upper housing 100, or uniformly sintered within the upper housing 100 using a foam metal structure, or uniformly sintered within the upper housing 100 using a wire mesh wick material structure. The bionic wick is made of copper powder with a particle size of 0.075mm-0.15mm, which is uniformly sintered in the cavity 400; or aluminum powder with a particle size of 0.075mm-0.15mm, which is uniformly sintered in the cavity 400; or a foam metal material structure, which is uniformly sintered in the cavity 400; or a wire mesh layer wick material structure, which is uniformly sintered in the cavity 400. It should be understood that the bionic wick 300 is a porous structure formed by powder sintering, foam metal, wire mesh, etc. The transport channel 302 and the connecting channel 303 are interconnected to form a spider web channel, and the liquid working medium is adsorbed on the bionic wick 300 under the action of capillary force. The spider web channel is a transmission channel for the gaseous working medium, that is, a gas phase channel. When the heat spreader is operating, the liquid working medium in the bionic wick 300 absorbs heat from the heat source and rapidly undergoes a phase change, from liquid to gas. The resulting gaseous working medium, under the action of the vapor pressure difference, quickly diffuses the gas phase through the spider web channel, while also carrying away the heat. The gaseous working medium condenses into a liquid when it encounters cold at the cold end and, under the action of capillary forces, flows back through the pore structure of the bionic wick 300, forming a working cycle. The upper wick 200 and the bionic wick 300 together form a channel for liquid circulation, which is the liquid phase channel. The upper wick 200 increases the volume of the pore structure of the entire wick. The larger the volume of liquid working medium stored, the higher the heat transfer limit of the heat spreader, thereby improving the heat dissipation capacity of the heat spreader. The upper wick 200 provides a larger area for the liquid phase reflux channel, making the liquid phase reflux more efficient. This ensures that when the heat spreader is operating, the liquid phase working medium is less likely to dry up and cause the heat spreader to fail. During this process, the liquid phase and the gas phase operate in the liquid phase channel and the gas phase channel respectively, which greatly reduces the mutual influence between the gas and liquid phases. The liquid phase working fluid will not have difficulty in reflowing due to the influence of steam resistance; the gas phase working fluid will not be carried away by the excessive shear force at the gas-liquid interface due to the steam carrying effect, causing the working part of the temperature equalizing plate to dry up and produce a "dry burning" phenomenon. The structure of the bionic liquid absorbent core 300 makes the liquid phase working fluid and the gas phase working fluid independent of each other, and the working response is faster, which improves the response rate of the temperature equalizing plate and has the effect of improving the heat dissipation capacity. The base boss 301 of the bionic liquid absorbent core 300 is, on the one hand, a reflux channel for the liquid, and on the other hand, a supporting structure for the upper and lower shell plates of the temperature equalizing plate. Therefore, the height of the base boss 301 is determined by the structure of the temperature equalizing plate.

[0041] In one embodiment, the width of the transport channel 302 is 2 mm to 3 mm, and the width of the base bosses 301 is also 2 mm to 3 mm. It should be understood that the width of the transport channel 302 is determined by the spacing between the base bosses 301 and can be adjusted based on specific needs. During adjustment, the base bosses 301 are evenly distributed radially from the center of the base toward the edge of the base, and the distance between each level is adjusted. The width of the base bosses 301 can also be adaptively adjusted based on specific production requirements.

[0042] In one embodiment, the thickness of the substrate is 0.5mm-0.8mm. It should be understood that the substrate includes a substrate bottom and a substrate boss 301 disposed on the substrate bottom. The substrate bottom is a 0.5mm-0.8mm thick sintered layer or a liquid wick material such as foam metal or wire mesh.

[0043] In one embodiment, the liquid working medium is any one of pure water, acetone, methanol, and ethanol. It should be understood that the liquid working medium selected from pure water, acetone, methanol, and ethanol has better volatilization and heat transfer effects.

[0044] In one embodiment, the upper shell 100 is connected to the cavity 400 by vacuum diffusion welding. It should be understood that vacuum diffusion welding can achieve a better sealing effect and prevent the working medium from volatilizing and drying up.

[0045] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do 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 therefore should not be understood as a limitation on the embodiments of the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0047] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0050] Those skilled in the art will readily envision other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the appended claims.

Claims

1. A bionic wick temperature plate, formed by sealingly connecting an upper shell and a cavity, characterized in that: The upper absorbent core is attached to the upper shell, and the bionic absorbent core is attached to the cavity; The bionic liquid-absorbing core comprises: A base body, the base body is used to accommodate a liquid working medium, the base body comprises a base body bottom and a plurality of base body bosses provided on the base body bottom, the plurality of base body bosses are evenly distributed radially from the center of the base body bottom to the edge of the base body bottom; A transport channel, wherein the transport channel is formed by intervals of the base body bosses uniformly distributed radially step by step; Connecting channels, wherein a plurality of connecting channels radially extend from the center of the base to the edge of the base; The transport channel and the connecting channel are interconnected to form a spider web channel.

2. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The depth of the upper shell is 1mm-3mm, and the depth of the cavity is 1mm-3mm.

3. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The upper shell and the cavity are both made of copper plates or the upper shell and the cavity are both made of aluminum plates.

4. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The upper liquid-absorbing core and the bionic liquid-absorbing core are both made by vacuum sintering.

5. The bionic liquid wick temperature equalizing plate according to claim 4, characterized in that: The upper liquid wick is made of copper powder or aluminum powder with a particle size of 0.075mm-0.15mm and is evenly sintered in the upper shell, or is made of foam metal or wire mesh layer liquid wick material structure and is evenly sintered in the upper shell.

6. The bionic liquid wick temperature equalizing plate according to claim 4, characterized in that: The bionic liquid absorbent core is made of copper powder or aluminum powder with a particle size of 0.075mm-0.15mm and is evenly sintered in the cavity, or is made of foam metal or wire mesh layer liquid absorbent core material structure and is evenly sintered in the cavity.

7. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The width of the transport channel is 2mm-3mm, and the width of the base boss is 2mm-3mm.

8. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The thickness of the bottom of the base is 0.5mm-0.8mm.

9. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The liquid working medium is any one of pure water, acetone, methanol and ethanol.

10. The bionic liquid wick temperature equalizing plate according to claim 1, characterized in that: The upper shell and the cavity are connected by vacuum diffusion welding.

Images