A centrifugal microchannel cooling device and method

Abstract

The application discloses a centrifugal micro-channel cooling device and method, which comprises an inner shell and an outer shell. The inner shell rotates relative to the outer shell, and active centrifugal action is generated, which is combined with passive centrifugal action of a centrifugal micro-channel, so that the heat dissipation capacity is improved. The double centrifugal action achieves the purposes of uniform temperature and improved heat exchange capacity, and improves the service life and operation reliability of a device.

Description

Technical Field

[0001] This application relates to the field of microchannel heat dissipation, and more particularly to a centrifugal microchannel cooling device and method. Background Technology

[0002] With the rapid development of computing requirements and big data, the power of chips in electronic devices has also increased accordingly, causing them to generate a lot of heat during operation. If this heat cannot be dissipated in time, it will have a significant impact on the lifespan and performance of the chips.

[0003] The heat generated by a chip varies depending on the operating state and arrangement of the electronic components in the circuit. Chip heat generation is a dynamic process, and the presence or absence of electronic components at different locations leads to the generation of localized hot spots with high temperatures. This results in characteristics such as "uneven temperature distribution" and "excessively high localized hot spots" on the chip surface.

[0004] To meet the ever-increasing demand for computing power, chip power is also increasing. When this power reaches a certain level, traditional air-cooling systems approach their cost-effective cooling limit. Meanwhile, cold-plate liquid cooling utilizes liquid working fluids with high specific heat capacity to rapidly remove heat, resulting in higher cooling efficiency. Multi-channel, straight, parallel flow channel structures are widely used due to their simple manufacturing process, but they suffer from poor temperature uniformity and limited heat dissipation capacity.

[0005] In view of the problems existing in the prior art, this application provides a centrifugal microchannel cooling device and method with more uniform temperature distribution and higher heat dissipation efficiency.

[0006] The statements in this section are merely background information related to this application and do not necessarily constitute prior art. Summary of the Invention

[0007] The purpose of this application is to address the aforementioned and other issues.

[0008] Another objective of this application is to design a centrifugal microchannel structure for electronic devices, specifically for current applications involving heat dissipation of chips and other electronic components.

[0009] Another objective of this application is to address the shortcomings of poor temperature uniformity in traditional microchannel heat dissipation, while simultaneously improving the heat transfer coefficient, enhancing heat dissipation capacity, and increasing device lifespan and operational reliability.

[0010] Another objective of this application is to solve the problem of uneven heat dissipation of power components at different locations due to the large difference in heat exchange effect between the inlet and outlet ends of the microchannel in existing microchannel heat dissipation structures.

[0011] The problems addressed in this application are not limited to those mentioned above, and other unmentioned problems can be clearly understood by those skilled in the art from the following description.

[0012] In some embodiments of this application, a centrifugal microchannel cooling device is provided, including an outer shell and an inner shell, the inner shell being located inside the outer shell, and the outer shell and the inner shell being coaxially arranged, the shaft being a hollow shaft, and the inner shell rotating relative to the outer shell with the hollow shaft;

[0013] The outer shell includes an upper end plate, a side plate, and a base plate, which together form an outer shell cavity.

[0014] The upper end plate has an opening, and the hollow shaft passes through the upper end plate opening;

[0015] At least two single-pole arc-shaped magnetic sheets, wherein the at least two single-pole arc-shaped magnetic sheets include at least one N-pole magnetic sheet and one S-pole magnetic sheet, and the N-pole magnetic sheet and the S-pole magnetic sheet are symmetrically arranged on the inner side of the side plate;

[0016] There are multiple brushes, which are fixedly installed on the inner side of the upper end plate.

[0017] The cooling device also includes:

[0018] The gap iron ring is composed of multiple iron pieces with gaps, which are sleeved on the upper part of the hollow shaft and are arranged opposite to the brush in the outer shell. When the brush is energized, the gap iron ring causes the coil current direction to change periodically, generating a periodically changing magnetic field, which repels the magnetic field generated by the single-pole arc-shaped magnetic piece, thus driving the inner shell to rotate.

[0019] The coil, connected to the gap iron ring, surrounds the inner shell and the microchannel plate;

[0020] A microchannel plate is disposed inside the inner shell and connected to the hollow shaft. The inner shell is fixed to the microchannel plate via the hollow shaft and a coil. The microchannel plate is provided with multiple centrifugal microchannels, which extend outward from the center of the microchannel plate.

[0021] Multiple centrifugal microchannel outlets are provided. The cooling working fluid is injected through the hollow shaft and flows out through the centrifugal microchannel outlets.

[0022] In some embodiments of this application, a centrifugal microchannel cooling device is also provided, including an outer shell and an inner shell, the inner shell being located inside the outer shell, and the outer shell and the inner shell being coaxially arranged, the shaft being a hollow shaft, and the inner shell rotating relative to the outer shell with the hollow shaft;

[0023] The outer shell includes an upper end plate, a side plate, and a base plate, which together form an outer shell cavity.

[0024] The upper end plate has an opening, and the hollow shaft passes through the upper end plate opening;

[0025] The outer surface of the upper end face of the inner shell is inlaid with two magnetic spheres with single magnetic poles and different magnetic poles, which are distributed by a gap.

[0026] A rectangular magnetic block is fixed to the upper surface of the outer shell; the two ends of the magnetic block are perpendicular to the magnetic ball.

[0027] The electric motor drives the rectangular magnetic block to rotate. As the magnetic block rotates, the two magnetic balls with opposite magnetic poles to the inner shell generate torque, which drives the entire inner shell to rotate, causing the microchannel heat dissipation device to generate centrifugal force.

[0028] In some embodiments of this application, the hollow shaft passes through the upper part of the inner shell, and the hollow shaft and the opening of the upper end plate of the outer shell are assembled through the bearing, so that the inner shell can rotate relative to the outer shell through the bearing.

[0029] In some embodiments of this application, the outer shell and inner shell are frustum-shaped structures.

[0030] In some embodiments of this application, the microchannel plate is a circular thin plate with multiple centrifugal microchannels. The centrifugal microchannels are formed by extending from the center of the microchannel plate along the radial direction of the microchannel plate, so that the cooling working fluid injected into the center of the microchannel plate through the hollow shaft flows radially from the center to the surrounding area along the multiple centrifugal microchannels.

[0031] In some embodiments of this application, there are two unipolar arc-shaped magnetic sheets, which are the n pole and the s pole, respectively. The two unipolar arc-shaped magnetic sheets are mirror images of each other and are arranged on the inner side of the side plate to generate a magnetic field inside the outer shell. This magnetic field repels the periodically changing magnetic field generated by the inner shell, causing the inner shell to rotate relative to the outer shell and generating an active centrifugal force.

[0032] In some embodiments of this application, there are four brushes, which are fixedly located on the inner side of the upper end plate of the housing and are horizontally opposite to the gap iron ring. After the brushes are energized, the gap iron ring with the gap iron plate is intermittently energized, so that the direction of the coil current changes periodically to generate a changing magnetic field.

[0033] In some embodiments of this application, the inner shell and the outer shell are connected by a hollow shaft and bearings; the hollow shaft extends part of its shaft through the opening at the upper end plate of the outer shell for connection to a cooling fluid supply device.

[0034] In some embodiments of this application, a gap is left between the microchannel plate and the substrate so that they do not contact each other; the cooling medium flowing out through the centrifugal microchannel outlet flows into the cavity between the inner shell and the outer shell, and the gap between the microchannel plate and the substrate also flows into the cooling medium; the substrate contacts the part to be cooled for heat exchange, thereby dissipating heat and cooling it; the outer shell is also provided with an outer shell outlet, through which the cooling medium after heat exchange flows out.

[0035] In another embodiment of this application, a centrifugal microchannel cooling method is also provided, comprising the following steps:

[0036] The cooling medium is injected through the opening at the upper end of the hollow shaft. The hollow structure of the hollow shaft acts as a guide tube to introduce the cooling medium into the microchannel plate. The periodically changing rotating magnetic field generated by the brush, the gap iron ring, and the coil connected to the gap iron ring always repels the fixed single-pole arc magnetic sheet, thereby driving the inner shell to rotate. The cooling medium generates centrifugal motion along the centrifugal microchannel and flows out of the centrifugal microchannel outlet. It enters the sealed space composed of the outer shell and the inner shell, and the substrate comes into contact with the part to be cooled. Heat is dissipated and cooled by heat exchange between the cooling medium and the part to be cooled.

[0037] Compared with the prior art, this application has at least the following advantages:

[0038] (1) The device is simple, occupies little space, is lightweight, has good disassembly, is easy to process and is convenient to maintain.

[0039] (2) The principle of magnetic repulsion centrifugation is adopted. A simple device with changing magnetic field is used to make the microchannel centrifugal, and the cooling working fluid rotates actively. The centrifugal effect of the microchannel further improves its heat exchange capacity, thereby improving the service life and operational stability of the device.

[0040] (3) The microchannel also has a centrifugal structure. The cooling medium is passively rotated through the centrifugal microchannel. The active centrifugal action of the external centrifugal action and the passive centrifugal action of the microchannel centrifugal structure combine the active and passive rotation of the cooling medium. The active and passive rotation directions are the same, which greatly improves the heat exchange capacity.

[0041] (4) Unlike the traditional rectangular microchannel cooling medium which flows in from one end and out from the other, the cooling medium flows out radially from the center to the surrounding area, resulting in a more uniform temperature distribution. Attached Figure Description

[0042] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0043] Figure 1 This is a schematic diagram of the outer casing structure of a centrifugal microchannel cooling device according to some embodiments of this application. Figure 1 ;

[0044] Figure 2 This is a schematic diagram of the outer casing structure of a centrifugal microchannel cooling device according to some embodiments of this application. Figure 2 ;

[0045] Figure 3 This is a schematic diagram of the outer casing structure of a centrifugal microchannel cooling device according to some embodiments of this application. Figure 3 ;

[0046] Figure 4 This is a schematic diagram of the inner shell structure of a centrifugal microchannel cooling device according to some embodiments of this application. Figure 1 ;

[0047] Figure 5 This is a schematic diagram of the inner shell structure of a centrifugal microchannel cooling device according to some embodiments of this application. Figure 2 ;

[0048] Figure 6 This is a schematic diagram of the internal structure of the microchannel plate in a centrifugal microchannel cooling device according to some embodiments of this application. Figure 1 ;

[0049] Among them, 01-outer shell, 02-outer shell outlet, 03-bearing, 04-single-pole arc-shaped magnetic sheet, 05-brush, 06-substrate, 07-hollow plate, 08-gap iron ring, 09-coil, 10-inner shell, 11-microchannel plate, 12-centrifugal microchannel outlet, 13-centrifugal microchannel. Detailed Implementation

[0050] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0051] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0054] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly, such as fixed connection, detachable connection, or integral connection. Connections can be direct or indirect through an intermediate medium; they can be internal connections between two components or electrical connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] It should be noted that in practical applications, due to limitations in equipment precision or installation errors, achieving absolute parallelism or perpendicularity is difficult. The descriptions of perpendicularity, parallelism, or unidirectional orientation in this application are not absolute limitations, but rather indicate that perpendicular or parallel structural settings can be achieved within a preset error range (e.g., a vertical deviation of 5°) to achieve the corresponding preset effects. This maximizes the technical effect of the defined features and makes the corresponding technical solution easy to implement, demonstrating high feasibility.

[0057] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0058] In the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0059] Reference Figure 1-6 The technical solution of this application will be further explained and described.

[0060] In some embodiments of this application, a centrifugal microchannel cooling device is provided, including an outer shell 01 and an inner shell 10, wherein the inner shell 10 is located inside the outer shell 01, and the outer shell 01 and the inner shell 10 are coaxially arranged, wherein the shaft is a hollow shaft 07, and the inner shell 10 rotates relative to the outer shell 01 with the hollow shaft 07.

[0061] The outer shell 01 includes an upper end plate, a side plate, and a base plate 06, which together form a cavity for the outer shell 01.

[0062] The upper end plate has an opening, and the hollow shaft 07 passes through the upper end plate opening;

[0063] At least two single-pole arc-shaped magnetic sheets 04, wherein the at least two single-pole arc-shaped magnetic sheets 04 include at least one N-pole magnetic sheet and one S-pole magnetic sheet, and the N-pole magnetic sheet and the S-pole magnetic sheet are symmetrically arranged on the inner side of the side plate;

[0064] Multiple brushes 05 are fixedly installed on the inner side of the upper end plate.

[0065] The cooling device also includes:

[0066] The gap iron ring 08 is composed of multiple iron pieces with gaps. It is sleeved on the upper part of the hollow shaft 07 and is arranged opposite to the brush 05 in the outer shell 01. When the brush 05 is energized, the gap iron ring 08 causes the current direction of the coil 09 to change periodically, generating a periodically changing magnetic field, which repels the magnetic field generated by the single-pole arc-shaped magnetic sheet 04 and drives the inner shell 10 to rotate.

[0067] Coil 09, which is connected to gap iron ring 08, surrounds inner shell 10 and microchannel plate 11;

[0068] A microchannel plate 11 is disposed inside the inner shell 10 and connected to the hollow shaft 07. The inner shell 10 is fixed to the microchannel plate 11 through the hollow shaft 07 and the coil 09. A plurality of centrifugal microchannels 13 are disposed on the microchannel plate 11, and the plurality of centrifugal microchannels 13 extend outward from the center of the microchannel plate 11.

[0069] Multiple centrifugal microchannel outlets 12 are provided. Cooling working fluid is injected through the hollow shaft 07 and flows out through multiple centrifugal microchannels 13 from the centrifugal microchannel outlets 12.

[0070] In some embodiments of this application, a centrifugal microchannel cooling device is also provided, including an outer shell 01 and an inner shell 10, wherein the inner shell 10 is located inside the outer shell 01, and the outer shell 01 and the inner shell 10 are coaxially arranged, wherein the shaft is a hollow shaft 07, and the inner shell 10 rotates relative to the outer shell 01 with the hollow shaft 07.

[0071] The outer shell 01 includes an upper end plate, a side plate, and a base plate 06, which together form a cavity for the outer shell 01.

[0072] The upper end plate has an opening, and the hollow shaft 07 passes through the upper end plate opening;

[0073] Two magnetic spheres with different magnetic poles and a single magnetic pole are embedded in the outer surface of the upper end face of the inner shell 10.

[0074] A rectangular magnetic block is fixed to the upper surface of the outer casing 01; the two ends of the magnetic block are perpendicular to the magnetic ball.

[0075] The electric motor drives the rectangular magnetic block to rotate. As the magnetic block rotates, the two magnetic balls opposite to the magnetic poles on the inner shell 10 generate torque, which drives the entire inner shell 10 to rotate, causing the microchannel heat dissipation device to generate centrifugal force.

[0076] In some embodiments of this application, the hollow shaft 07 passes through the upper part of the inner shell 10, and the hollow shaft 07 and the upper end plate opening of the outer shell 01 are assembled through the bearing 03, so that the inner shell 10 can rotate relative to the outer shell 01 through the bearing 03.

[0077] In some embodiments of this application, the outer shell 01 and the inner shell 10 are frustum-shaped structures.

[0078] In some embodiments of this application, the microchannel plate 11 is a circular thin plate with multiple centrifugal microchannels 13. The centrifugal microchannels 13 are formed by extending from the center of the microchannel plate 11 along the radial direction of the microchannel plate 11, so that the cooling working medium injected into the center of the microchannel plate 11 through the hollow shaft 07 flows radially from the center to the surrounding area along the multiple centrifugal microchannels 13.

[0079] In some embodiments of this application, there are two single-pole arc-shaped magnetic sheets 04, which are the n pole and the s pole, respectively. The two single-pole arc-shaped magnetic sheets 04 are mirror-arranged on the inner side of the side plate to generate a magnetic field inside the outer shell 01, which repels the periodically changing magnetic field generated by the inner shell 10, causing the inner shell 10 to rotate relative to the outer shell 01 and generate an active centrifugal force.

[0080] In some embodiments of this application, there are four brushes 05, which are fixedly located on the inner side of the upper end plate of the outer shell 01 and are horizontally opposite to the gap iron ring 08. After the brushes 05 are energized, the gap iron ring 08 with the gap iron sheet is intermittently energized, so that the direction of the current in the coil 09 changes periodically to generate a changing magnetic field.

[0081] In some embodiments of this application, the inner shell 10 and the outer shell 01 are connected by a hollow shaft 07 and a bearing 03; the hollow shaft 07 extends a portion of its shaft through the opening of the upper end plate of the outer shell 01 for connection with a cooling fluid supply device.

[0082] In some embodiments of this application, a gap is left between the microchannel plate 11 and the substrate 06 so that they do not contact each other; the cooling medium flowing out through the centrifugal microchannel outlet 12 flows into the cavity between the inner shell 10 and the outer shell 01, and the gap between the microchannel plate 11 and the substrate 06 also flows into the cooling medium; the substrate 06 contacts the part to be cooled for heat exchange, thereby dissipating heat and cooling it; the outer shell 01 is also provided with an outer shell outlet 02, through which the cooling medium after heat exchange flows out.

[0083] In some embodiments of this application, a centrifugal microchannel cooling device includes an outer shell 01 and an inner shell 10. The inner shell 10 is suspended inside the outer shell 01 and is rotatable relative to the outer shell 01. A microchannel plate 11 is disposed inside the inner shell 10, and the microchannel plate 11 is provided with a plurality of centrifugal microchannels 13. The centrifugal microchannels 13 extend outward from the center of the microchannel plate 11. The microchannel plate 11 is also provided with a centrifugal microchannel outlet 12. The cooling medium undergoes centrifugal motion with the centrifugal microchannels 13 and is simultaneously subjected to the centrifugal force brought about by the inner shell 10 rotating relative to the outer shell 01. It flows out from the centrifugal microchannel outlet 12 into the cavity formed by the inner shell 10 and the outer shell 01, carrying away the heat of the part to be cooled and cooling it.

[0084] In some embodiments of this application, the outer shell 01 and the inner shell 10 are coaxially arranged, and the shaft is a hollow shaft 07. The cooling medium enters the microchannel plate 11 through the opening at the upper end of the hollow shaft 07.

[0085] In some embodiments of this application, the outer shell 01 includes an upper end plate, a side plate, and a base plate 06, which together form a cavity for the outer shell 01.

[0086] The cooling device also includes at least two single-pole arc-shaped magnetic sheets 04;

[0087] Multiple brushes 05 are fixedly installed on the inner side of the upper end plate of the outer casing 01;

[0088] And a gap iron ring 08, which is composed of multiple gap-distributed iron pieces, is sleeved on the upper part of the hollow shaft 07 and is arranged in correspondence with multiple brushes 05;

[0089] And the coil 09 connecting the gap iron ring 08;

[0090] The at least two single-pole arc-shaped magnetic sheets 04 include at least one N-pole magnetic sheet and one S-pole magnetic sheet, which are symmetrically arranged on the inner side of the side plate; when the brush 05 is energized, the gap iron ring 08 causes the current direction in the coil 09 connected to it to change periodically, generating a periodically changing magnetic field, which repels the magnetic field generated by the single-pole arc-shaped magnetic sheet 04, causing the inner shell 10 to rotate.

[0091] In some embodiments of this application, there are two single-pole arc-shaped magnetic sheets 04, one being an N-pole magnetic sheet and the other an S-pole magnetic sheet, which are arranged in a mirror image on the inner side of the side plate of the outer casing 01; there are four brushes 05, and the gap magnetic ring is disposed in the space enclosed by the four brushes 05.

[0092] In some embodiments of this application, the outer shell 01 is provided with an outer shell outlet 02, and the cooling working fluid flows out from the centrifugal microchannel outlet 12 through the centrifugal microchannel 13 and is then discharged through the outer shell outlet 02.

[0093] In some embodiments of this application, the outer shell 01 and the inner shell 10 are frustum-shaped structures.

[0094] In some embodiments of this application, the outer shell 01 and the inner shell 10 are coaxially arranged, the shaft is a hollow shaft 07, the outer shell 01 is assembled with the hollow shaft 07 through the bearing 03, and the cooling medium enters the microchannel plate 11 through the upper opening of the hollow shaft 07.

[0095] In some embodiments of this application, the microchannel plate 11 is a circular thin plate with multiple centrifugal microchannels 13. The center of the circular thin plate is connected to the hollow shaft 07. The centrifugal microchannels 13 are formed by extending the center of the microchannel plate 11 along the radial direction of the microchannel plate 11, thereby allowing the cooling working fluid introduced into the center of the microchannel plate 11 by the hollow shaft 07 to flow radially from the center to the surrounding area.

[0096] In some embodiments of this application, the coil 09 is connected to the gap iron ring 08, surrounds the inner shell 10 and the microchannel plate 11 and fixes both of them; the inner shell 10 is tightly fitted and fixed to the microchannel plate 11 by the hollow shaft 07 and the coil 09.

[0097] In some embodiments of this application, a gap is left between the microchannel plate 11 and the substrate 06 of the outer shell 01, and they do not contact each other; the substrate 06 is in direct or indirect contact with the component to be cooled, and is used for heat dissipation of the component to be cooled.

[0098] In some embodiments of this application, a centrifugal microchannel cooling device is provided, which adopts a circular centrifugal microchannel 13 with a central inlet, and the cooling working fluid flows radially from the center to the surrounding area, resulting in a more uniform temperature distribution.

[0099] In some embodiments of this application, the centrifugal microchannel cooling device includes an inner shell 10 and an outer shell 01. The inner shell 10 rotates relative to the outer shell 01 to generate an active centrifugal effect, which, combined with the passive centrifugal effect of the centrifugal microchannel 13, further improves the heat dissipation capacity. The centrifugal effect of the centrifugal channel structure and the device achieves the purpose of uniform temperature and improved heat exchange capacity.

[0100] In some embodiments of this application, a centrifugal microchannel cooling device includes an outer shell 01 and an inner shell 10, the inner shell 10 being located inside the outer shell 01 and the two being coaxially arranged, the inner shell 10 rotating relative to the outer shell 01, and microchannels being provided inside the inner shell 10.

[0101] In some embodiments of this application, the outer shell 01 includes an upper end plate, a side plate, and a base plate 06, which together form a cavity for the outer shell 01.

[0102] The outer shell 01 is provided with an outer shell outlet 02, through which the cooling working fluid flowing out of the inner shell 10 is discharged;

[0103] The upper end plate has an opening, and the bearing 03 is disposed at the opening;

[0104] At least two single-pole arc-shaped magnetic sheets 04, wherein the at least two single-pole arc-shaped magnetic sheets 04 include at least one N-pole magnetic sheet and one S-pole magnetic sheet, and the N-pole magnetic sheet and the S-pole magnetic sheet are arranged in a mirror image on the inner side of the side plate;

[0105] Multiple brushes 05 are fixedly installed on the inner side of the upper end plate.

[0106] In some embodiments of this application, the cooling device further includes:

[0107] Hollow shaft 07 passes through the upper part of the inner shell 10, and the hollow shaft 07 and the upper end plate opening of the outer shell 01 are assembled through the bearing 03. The cooling medium enters the microchannel plate 11 through the upper end opening of the hollow shaft 07.

[0108] The gap iron ring 08 is composed of multiple iron pieces with gaps. It is sleeved on the upper part of the hollow shaft 07 and is arranged opposite to the brush 05 in the outer shell 01. When the brush 05 is energized, the gap iron ring 08 causes the current direction of the coil 09 to change periodically, generating a periodically changing magnetic field, which repels the magnetic field generated by the single-pole arc-shaped magnetic sheet 04 and drives the inner shell 10 to rotate.

[0109] Coil 09, which is connected to gap iron ring 08, surrounds inner shell 10 and microchannel plate 11;

[0110] A microchannel plate 11 is connected to the hollow shaft 07. The microchannel plate 11 is provided with a plurality of centrifugal microchannels 13. The plurality of centrifugal microchannels 13 extend outward from the center of the microchannel plate 11. The cooling working medium introduced through the hollow shaft 07 enters the plurality of centrifugal microchannels 13.

[0111] Multiple centrifugal microchannel outlets 12 are provided. The cooling working fluid flows out of the centrifugal microchannel outlets 12 through the multiple centrifugal microchannels 13 and is then discharged through the outer shell outlet 02.

[0112] In some embodiments of this application, the outer shell 01 may be made of a material with high thermal conductivity such as copper, and the outer shell 01 mainly serves a protective function.

[0113] In some embodiments of this application, a brush 05 and a single-pole arc-shaped magnetic sheet 04 are installed inside the outer casing 01, which can provide power to the coil 09 and provide a stable magnetic field.

[0114] In some embodiments of this application, the outer shell 01 is formed by an upper end plate, a side plate, and a base plate 06 to create a sealed environment cavity.

[0115] In some embodiments of this application, the upper end plate is disposed opposite to the substrate 06, and the upper end plate and the substrate 06 are connected through the side plate.

[0116] In some embodiments of this application, the outer shell 01 and the inner shell 10 are, but are not limited to, frustum-shaped structures.

[0117] In some embodiments of this application, the microchannel plate 11 can be a circular thin plate with multiple centrifugal microchannels 13. The centrifugal microchannels 13 are formed by extending from the center of the microchannel plate 11 along the radial direction of the microchannel plate 11, thereby allowing the cooling working fluid to flow radially from the center to the surrounding area.

[0118] In some embodiments of this application, multiple centrifugal microchannels 13 radiate outwards from the center of the microchannel plate 11.

[0119] In some embodiments of this application, the bearing 03 is located at the opening of the upper end plate of the outer shell 01. The bearing 03 is assembled with the hollow shaft 07, so that the inner shell 10 rotates under the influence of the changing magnetic field generated by the energized coil 09 and the stable magnetic field generated by the monopole arc magnetic sheet 04.

[0120] In some embodiments of this application, there are two single-pole arc-shaped magnetic sheets 04, with the two arc-shaped magnetic sheets being the n pole and the s pole, respectively. The single-pole arc-shaped magnetic sheets 04 are mirror images located inside the side plate and are used to generate a magnetic field inside the outer shell 01, which repels the periodically changing magnetic field generated by the inner shell 10. Due to the magnetic repulsion, the inner shell 10 rotates relative to the outer shell 01 through the bearing 03, generating an active centrifugal force.

[0121] In some embodiments of this application, there may be four brushes 05. The four brushes 05 are fixedly located on the inner side of the upper end plate of the housing 01 and are horizontally opposite to the gap iron ring 08. After the brushes 05 are energized, the gap iron ring 08 with the gap iron sheet is energized, and the direction of the current in the coil 09 changes periodically to generate a changing magnetic field.

[0122] In some embodiments of this application, the substrate 06 is tightly fitted and sealed to the side plate.

[0123] In some embodiments of this application, the substrate 06 is in direct contact with electronic devices to dissipate heat and cool them.

[0124] In some embodiments of this application, the hollow shaft 07 is made of silicon-based material and serves as the inlet for the cooling medium. The cooling medium enters the microchannel plate 11 through the opening at the upper end of the hollow shaft 07 and passes through the centrifugal microchannel 13.

[0125] In some embodiments of this application, a gap iron ring 08 is fitted on the upper part of the hollow shaft 07, and the inner shell 10 is tightly fitted and fixed to the microchannel plate 11 through the hollow shaft 07 and the coil 09.

[0126] In some embodiments of this application, the coil 09 is a multi-turn enameled coil 09 made of copper.

[0127] In some embodiments of this application, the coil 09 is connected to the gap iron ring 08, surrounds the inner shell 10 and the microchannel plate 11 and fixes both.

[0128] In some embodiments of this application, the gap iron ring 08 generates a periodically changing magnetic field when energized. The changing magnetic poles generated by the ring always repel the magnetic poles of the corresponding monopole arc-shaped magnetic sheet 04. This magnetic repulsion causes the inner shell 10, which is surrounded by the coil 09, to rotate. The brush 05 passes through the gap iron ring 08 and faces the iron sheet again. The current direction of the coil 09 connected to the gap iron ring 08 is changed, and the magnetic field generated by the coil 09 changes. Its magnetic poles repel the magnetic poles of the corresponding monopole arc-shaped magnetic sheet 04 again, causing the inner shell 10 to rotate. This cycle repeats, causing the microchannel plate 11 to rotate, thus achieving an active centrifugal effect.

[0129] In some embodiments of this application, the inner shell 10 may be made of synthetic resin and wrapped with a coil 09 to increase the magnetic field area generated by the coil 09 and to provide a surrounding carrier for the coil 09.

[0130] In some embodiments of this application, the microchannel plate 11 can be integrally formed with the hollow shaft 07.

[0131] In some embodiments of this application, it is made of silicon-based material.

[0132] In some embodiments of this application, after assembly, a distance is left between the microchannel plate 11 and the substrate 06, and they do not contact each other.

[0133] In some embodiments of this application, the centrifugal microchannel 13 can be formed by etching. The cooling working fluid flowing in from the hollow shaft 07 flows through the centrifugal microchannel 13 and rotates passively, generating a passive centrifugal effect, and is discharged through the active centrifugal effect generated by the inner shell 10.

[0134] In some embodiments of this application, the inner shell 10 and the outer shell 01 are connected by a hollow shaft 07 and a bearing 03; the hollow shaft 07 extends a portion of its shaft through the opening of the upper end plate of the outer shell 01 for connection with a cooling fluid supply device.

[0135] In some embodiments of this application, the inner shell 10 is suspended inside the outer shell 01, and a gap is left between the outer shell 01 and the inner shell 10.

[0136] In some embodiments of this application, the cooling fluid supply device is sealed to the upper end of the hollow shaft 07 via a pipe structure.

[0137] In another embodiment of this application, two magnetic balls with single magnetic poles and different magnetic poles are embedded in the outer surface of the upper end face of the inner shell 10; a rectangular magnetic block is fixed on the upper end face of the outer shell 01; the two ends of the magnetic block are perpendicular to the magnetic balls; driven by the motor, the rectangular magnetic block rotates around the device, and because the magnetic block rotates, its two ends of magnetic poles also rotate, and the two magnetic balls located in the inner shell 10 rotate with it under the action of torque; thereby driving the entire inner shell 10 to rotate, so that the microchannel generates centrifugal force.

[0138] In some embodiments of this application, the component to be cooled is an electronic device, which may be a chip.

[0139] In other embodiments of this application, a centrifugal microchannel cooling method is provided. The cooling medium is injected through the opening at the upper end of the hollow shaft 07. The hollow structure of the hollow shaft 07 serves as a guide tube to introduce the cooling medium into the microchannel plate 11. The periodically changing rotating magnetic field generated by the brush 05, the gap iron ring 08, and the coil 09 connected to the gap iron ring 08 always repels the fixed arc-shaped magnetic pole of the unipolar arc-shaped magnetic sheet 04, thereby driving the inner shell 10 to rotate. The cooling medium generates centrifugal motion along the centrifugal microchannel 13 and flows out of the centrifugal microchannel outlet 12. It then enters the sealed space composed of the outer shell 01 and the inner shell 10, and is discharged from the outer shell outlet 02.

[0140] In some embodiments of this application, there are four brushes 05, four iron plates, and two single-pole arc-shaped magnetic plates 04. After the four brushes 05 are energized, the four iron plates on the horizontally opposite gap iron ring 08 are simultaneously energized. At this time, the coil 09 is connected to the gap iron ring 08 and also generates current, thereby generating a magnetic field. The magnetic poles of the magnetic field generated by the coil 09 are the same as the magnetic poles of the two single-pole arc-shaped magnetic plates 04. Due to the magnetic repulsion, the inner shell 10 surrounding the coil 09 rotates. During this process, the gap iron ring 08 rotates, causing the brushes 05 to pass through the gap of the gap iron ring 08 and be horizontally opposite the iron plates on the gap iron ring 08 again. At this time, the current direction of the coil 09 connected to the gap iron ring 08 is changed, the magnetic field generated by the coil 09 changes, and its magnetic poles repel the magnetic poles of the corresponding single-pole arc-shaped magnetic plates 04 again, causing the inner shell 10 to rotate again. This cycle repeats, thereby causing the microchannel plate 11 to rotate and achieve active centrifugal force.

[0141] This application generates a periodically changing magnetic field by using a coil 09 that produces a periodically changing current after being energized. After the coil 09 achieves magnetic repulsion with the external stable magnetic field, it drives the entire microchannel device to rotate. This combines the active centrifugal effect of the cooling medium with the passive centrifugal effect of the centrifugal microchannel 13 structure, thereby improving the heat exchange capacity of electronic devices such as chips.

[0142] This application utilizes a hollow shaft 07 at the central inlet: the cooling medium flows radially from the center to the surrounding area, resulting in a more uniform temperature distribution and better heat dissipation; thus improving the heat exchange capacity of the microchannel.

[0143] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A centrifugal microchannel cooling device, characterized in that, The device includes an outer shell and an inner shell, the inner shell being located inside the outer shell and coaxially arranged. The shaft is a hollow shaft, and the inner shell rotates relative to the outer shell with the hollow shaft. The outer shell includes an upper end plate, a side plate, and a base plate, which together form an outer shell cavity. An upper end plate has an opening through which the hollow shaft passes. At least two single-pole arc-shaped magnetic sheets are included, each including at least one N-pole magnetic sheet and one S-pole magnetic sheet, which are symmetrically arranged inside the side plate. The device includes multiple brushes fixedly mounted on the inner side of the upper end plate. The cooling device further includes: a gap iron ring composed of multiple spaced iron plates, fitted onto the upper part of the hollow shaft and positioned opposite the brushes in the outer shell; when the brushes are energized, the gap iron ring causes the coil current direction to change periodically, generating a periodically changing magnetic field that repels the magnetic field generated by the single-pole arc-shaped magnetic plate, causing the inner shell to rotate; a coil connected to the gap iron ring, surrounding the inner shell and the microchannel plate; a microchannel plate disposed within the inner shell and connected to the hollow shaft, the inner shell being fixed to the microchannel plate via the hollow shaft and the coil; multiple centrifugal microchannels provided on the microchannel plate, extending outwards from the center of the microchannel plate; and multiple centrifugal microchannel outlets, through which the cooling medium is injected via the hollow shaft and flows out via the centrifugal microchannel outlets.

2. The centrifugal microchannel cooling device according to claim 1, characterized in that, The hollow shaft passes through the upper part of the inner shell, and the hollow shaft and the opening of the upper end plate of the outer shell are assembled by bearings, so that the inner shell can rotate relative to the outer shell by bearings.

3. The centrifugal microchannel cooling device according to claim 1, characterized in that, The outer shell and inner shell are frustum-shaped structures.

4. The centrifugal microchannel cooling device according to claim 1, characterized in that, The microchannel plate is a thin circular plate with multiple centrifugal microchannels. The centrifugal microchannels are formed by extending radially from the center of the microchannel plate, so that the cooling medium injected into the center of the microchannel plate through the hollow shaft flows radially outward from the center along the multiple centrifugal microchannels.

5. The centrifugal microchannel cooling device according to claim 1, characterized in that, There are two unipolar arc-shaped magnetic sheets, one being the n-pole and the other the s-pole. The two unipolar arc-shaped magnetic sheets are mirror images of each other and are arranged inside the side plate to generate a magnetic field inside the outer shell. This magnetic field repels the periodically changing magnetic field generated by the inner shell, causing the inner shell to rotate relative to the outer shell and generating an active centrifugal force.

6. The centrifugal microchannel cooling device according to claim 1, characterized in that, There are four brushes, which are fixed inside the upper end plate of the outer shell and are horizontally opposite to the gap iron ring. When the brushes are energized, the gap iron ring with the gap iron plate is intermittently energized, so that the direction of the coil current changes periodically and generates a changing magnetic field.

7. The centrifugal microchannel cooling device according to claim 1, characterized in that, The inner shell and outer shell are connected by a hollow shaft and bearings; the hollow shaft extends part of its shaft through the opening in the upper end plate of the outer shell, and is used to connect to the cooling fluid supply device.

8. A centrifugal microchannel cooling device according to claim 1, characterized in that, A gap is left between the microchannel plate and the substrate so that they do not contact each other; the cooling medium flowing out through the centrifugal microchannel outlet flows into the cavity between the inner shell and the outer shell, and the gap between the microchannel plate and the substrate also flows into the cooling medium. The substrate contacts the part to be cooled for heat exchange, thus dissipating heat and cooling it down; the outer shell is also provided with an outer shell outlet, through which the cooling medium after heat exchange flows out.

9. A centrifugal microchannel cooling method, characterized in that, The device according to claim 1 comprises the following steps: a cooling medium is injected through the opening at the upper end of a hollow shaft, the hollow structure of the hollow shaft serving as a guide tube to introduce the cooling medium into a microchannel plate; a periodically changing rotating magnetic field generated by the brush, the gap iron ring, and the coil connected to the gap iron ring constantly repels the fixed single-pole arc-shaped magnetic sheet, thereby driving the inner shell to rotate; the cooling medium generates centrifugal motion along the centrifugal microchannel until it flows out of the centrifugal microchannel outlet; it enters the sealed space composed of the outer shell and the inner shell, the substrate contacts the part to be cooled, and the cooling medium exchanges heat with the part to be cooled to dissipate heat and reduce temperature.

10. A centrifugal microchannel cooling device, characterized in that, The device includes an outer shell and an inner shell, with the inner shell located inside the outer shell and coaxially arranged. The shaft is hollow, and the inner shell rotates relative to the outer shell along the hollow shaft. The outer shell includes an upper end plate, side plates, and a base plate, which together form an outer shell cavity. An upper end plate opening is provided on the upper end plate, through which the hollow shaft passes. Two magnetic spheres with single magnetic poles and different magnetic poles are embedded in the outer surface of the upper end of the inner shell. A rectangular magnetic block is fixed on the upper end of the outer shell, with its two ends perpendicular to the magnetic spheres. A motor drives the rectangular magnetic block to rotate. As the magnetic block rotates, the two magnetic spheres with opposite magnetic poles to those on the inner shell generate torque, causing the entire inner shell to rotate and creating a centrifugal force in the microchannel heat dissipation device.

11. A centrifugal microchannel cooling device according to claim 10, characterized in that, The outer shell and inner shell are frustum-shaped structures.

12. A centrifugal microchannel cooling device according to claim 10, characterized in that, The inner shell and outer shell are connected by a hollow shaft and bearings; the hollow shaft extends part of its shaft through the opening in the upper end plate of the outer shell, and is used to connect to the cooling fluid supply device.

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