CN113891611A - Working medium driving mechanism and heat dissipation device - Google Patents
Working medium driving mechanism and heat dissipation device Download PDFInfo
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- CN113891611A CN113891611A CN202010633233.0A CN202010633233A CN113891611A CN 113891611 A CN113891611 A CN 113891611A CN 202010633233 A CN202010633233 A CN 202010633233A CN 113891611 A CN113891611 A CN 113891611A
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- driving mechanism
- medium driving
- heat dissipation
- pushing piece
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- 230000007246 mechanism Effects 0.000 title claims abstract description 68
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 46
- 230000005284 excitation Effects 0.000 claims abstract description 64
- 230000008602 contraction Effects 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 37
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052755 nonmetal Inorganic materials 0.000 claims description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052733 gallium Inorganic materials 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000005555 metalworking Methods 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of heat dissipation equipment, in particular to a working medium driving mechanism and a heat dissipation device. The working medium driving mechanism comprises a pushing piece and an excitation device, the pushing piece can expand and contract and is arranged in a circulating pipeline of the heat dissipation device; the excitation device is used for exciting the pushing piece to expand and contract so as to push the working medium in the circulating pipeline through the expansion and contraction of the pushing piece. The pushing piece of the working medium driving mechanism provided by the embodiment of the invention can expand and contract, when the pushing piece is arranged in the circulation pipeline of the heat dissipation device, the pushing piece can be excited to expand and contract through the excitation device so as to push the working medium in the circulation pipeline to circularly flow, the structure and the control of the working medium driving mechanism are simpler, the heat generated by the working medium driving mechanism during working is less, and the pushing piece is arranged in the circulation pipeline, so that the heat dissipation device applying the working medium to circularly flow has a compact volume.
Description
Technical Field
The invention relates to the technical field of heat dissipation equipment, in particular to a working medium driving mechanism and a heat dissipation device.
Background
At present, rapid development of computer technology, space technology and the like puts forward a great deal of high heat flux density heat dissipation requirements on electronic equipment and components, such as a CPU (central processing unit), a GPU (graphic processing unit), a laser altimeter, a CCD (charge coupled device) camera, a spectrometer and the like. In addition, many power electronic devices or power equipment also face the problem of high power and high heat flow heating, such as high-power LEDs, concentrating solar cells, high-power laser chips, IGBT electrical conversion modules, X-ray tubes, engines, and the like, and the development of high-performance cooling technology is an important prerequisite for ensuring the safe and efficient operation and development towards higher performance of these devices and equipment. The existing heat dissipation device mainly comprises a circulation pipeline and a working medium driving mechanism, wherein working media are filled in the circulation pipeline, the working medium driving mechanism is used for driving the working media to circularly flow in the circulation pipeline so as to take away heat of a heat dissipation device through the circularly flowing working media, the working medium driving mechanism used by the existing heat dissipation device is generally a circulating pump, an electromagnetic pump and the like, the working medium driving mechanisms are complex in structure, and in addition, a large amount of heat can be generated during working, and the heat dissipation efficiency of the heat dissipation device can be influenced.
Disclosure of Invention
The embodiment of the invention provides a working medium driving mechanism and a heat dissipation device, which are used for solving or partially solving the problems that the working medium driving mechanism used by the existing heat dissipation device is complex in structure and can generate a large amount of heat during working.
The embodiment of the invention provides a working medium driving mechanism, which comprises:
the pushing piece can expand and contract and is used for being arranged in a circulating pipeline of the heat dissipation device; and the number of the first and second groups,
and the excitation device is used for exciting the pushing piece to expand and contract so as to push the working medium in the circulating pipeline through the expansion and contraction of the pushing piece.
According to one embodiment of the present invention, the urging members and the excitation devices are provided in a plurality in one-to-one correspondence, and the plurality of urging members are arranged along the extending direction of the circulation line.
According to one embodiment of the invention, the pusher member is provided with an expansion chamber having an expanded state and a contracted state, the activation device being configured to activate the expansion chamber to switch between the expanded state and the contracted state to cause the pusher member to expand and contract.
According to one embodiment of the invention, the activation device is a filler supply device in communication with the expansion chamber for adding filler to and extracting filler from the expansion chamber; or,
the expansion cavity is filled with filler, the excitation device is a heating device, and the heating device is arranged in the expansion cavity and used for heating the filler in the expansion cavity.
According to one embodiment of the invention, the filler is air or absolute ethanol.
According to one embodiment of the invention, the material of the pushing member is rubber.
According to one embodiment of the invention, the expansion cavity is open, and the open edge of the expansion cavity is connected with the inner side wall of the circulation pipeline so as to cover the opening of the expansion cavity through the inner side wall of the circulation pipeline in a sealing manner to close the expansion cavity.
According to one embodiment of the invention, the pusher is bowl-shaped; and/or the presence of a gas in the gas,
the excitation device is a heating device and is arranged to be fixed on the inner side wall of the circulation pipeline for sealing and covering the opening of the expansion cavity.
According to an embodiment of the present invention, the working medium driving mechanism further comprises a controller, and the controller is electrically connected to the excitation device.
An embodiment of the present invention further provides a heat dissipation apparatus, including:
a circulation line; and the number of the first and second groups,
the working medium driving mechanism is the working medium driving mechanism, and a pushing piece of the working medium driving mechanism is arranged in the circulating pipeline.
According to one embodiment of the invention, the circulation line comprises a cooling section and a heat conducting section, wherein:
the pushing piece is positioned between the cooling section and the heat conducting section; and/or the presence of a gas in the gas,
the heat dissipation device also comprises a cooling mechanism arranged corresponding to the cooling section, and the cooling mechanism is used for cooling the cooling section; and/or the presence of a gas in the gas,
the cooling section is bent and extended back and forth; and/or the presence of a gas in the gas,
the heat conducting section is provided with a heat conducting piece for heat conduction with a device to be cooled.
According to one embodiment of the invention, a one-way valve is arranged on the circulation line.
According to one embodiment of the invention, the circulation pipeline is filled with a liquid metal working medium or a liquid metal mixed working medium, wherein the liquid metal mixed working medium comprises a liquid metal and a non-metal liquid.
According to one embodiment of the invention, the liquid metal comprises at least one of a gallium-based alloy, a bismuth-based alloy; the non-metal liquid comprises at least one of electrolyte, absolute ethyl alcohol and isopentane.
The embodiment of the present invention further provides a control method of the working medium driving mechanism, where the pushing part of the working medium driving mechanism includes a first pushing part and a second pushing part, and correspondingly, the excitation device of the working medium driving mechanism includes a first excitation device and a second excitation device, and the control method includes:
under the condition that the first pushing piece expands and the second pushing piece contracts, the driving process of the working medium driving mechanism is executed in a circulating mode;
wherein, the actuating process of working medium actuating mechanism includes:
controlling the second actuating device to expand the second pusher;
controlling the first actuating device to contract the first pusher;
controlling the first and second actuating devices to expand the first pusher and contract the second pusher.
The pushing piece of the working medium driving mechanism provided by the embodiment of the invention can expand and contract, when the pushing piece is arranged in the circulation pipeline of the heat dissipation device, the pushing piece can be excited to expand and contract through the excitation device so as to push the working medium in the circulation pipeline to circularly flow, the structure and the control of the working medium driving mechanism are simpler, the heat generated by the working medium driving mechanism during working is less, and the pushing piece is arranged in the circulation pipeline, so that the heat dissipation device applying the working medium circulating flow has compact volume, and can be suitable for heat dissipation of equipment with higher space requirements, such as a notebook computer and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the actuator of FIG. 1, wherein the first pusher member is expanded and the second pusher member is contracted;
FIG. 3 is a schematic structural view of the actuator of FIG. 1, wherein the first pusher member is retracted and the second pusher member is expanded;
FIG. 4 is a flowchart of an embodiment of a control method of the working medium driving mechanism according to the present invention;
description of reference numerals: the heat dissipation device comprises a heat dissipation device 100, a working medium driving mechanism 1, a pushing piece 11, a first pushing piece 11a, a second pushing piece 11b, an expansion cavity 111, an excitation device 12, a first excitation device 12a, a second excitation device 12b, a controller 13, a circulation pipeline 2, a cooling section 21, a heat conduction section 22, a cooling mechanism 3 and a heat conduction piece 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the invention provides a working medium driving mechanism which can be applied to a heat dissipation device and can drive a working medium in a circulation pipeline of the heat dissipation device to circularly flow, and as shown in fig. 1 to 3, the working medium driving mechanism 1 comprises a pushing piece 11 and an excitation device 12.
As shown in fig. 1 to 2, the pushing member 11 is expandable and contractible, and the pushing member 11 is configured to be disposed in the circulation pipe 2 of the heat dissipating device 100. When the working medium driving mechanism 1 is applied to the heat dissipation device 100, the pushing member 11 is disposed in the circulation pipeline 2 of the heat dissipation device 100, wherein the pushing member 11 may be fixed on the inner side wall of the circulation pipeline 2 by means of bonding or the like.
The manner in which the pusher member 11 can expand and contract can be varied, for example, the pusher member 11 can be made of an expandable and contractible material such as an expansion alloy; as shown in fig. 2, in this embodiment, the pushing member 11 is provided with an expansion chamber 111, and the expansion chamber 111 has an expansion state and a contraction state, in this case, the pushing member 11 is usually made of an elastic material such as rubber, when a filler (the filler may be a gas such as air, or a liquid such as water) is added into the expansion chamber 111 of the pushing member 11, the pushing member 11 expands, and when the filler in the expansion chamber 111 of the pushing member 11 is extracted, the pushing member 11 contracts.
The pushing piece 11 can realize the expansion and contraction of the pushing piece 11 by arranging the expansion cavity 111, the pushing piece 11 is provided with the expansion cavity 111 in various ways, the pushing piece 1 can be arranged in a hollow way, the inner side wall of the pushing piece 1 is enclosed to form a closed cavity, and the closed cavity is the expansion cavity 111; as shown in fig. 2, the pushing member 11 may be provided with an expansion chamber 111, the expansion chamber 111 is open (for example, the pushing member 11 may be shaped like a bowl, etc.), when the pushing member 11 is disposed in the circulation pipeline 2, an open edge of the expansion chamber 111 is connected to an inner side wall of the circulation pipeline 2, so as to seal and cover an open opening of the expansion chamber 111 through the inner side wall of the circulation pipeline 2, so as to close the expansion chamber 111, so that a closed chamber is formed by enclosing the pushing member 11 and the inner side wall of the circulation pipeline 2, which not only simplifies the structure of the pushing member 11, but also facilitates disposing a communication hole on the inner side wall of the circulation pipeline 2 when the closed chamber needs to be disposed to communicate with the outside, as compared with disposing a communication hole on the pushing member 11.
As shown in fig. 2 and 3, the excitation device 12 can excite the pushing member 11 to expand and contract so as to push the working medium in the circulation line 2 by the expansion and contraction of the pushing member 11. And the excitation device 12 can excite the pushing member 11 to expand and contract, so the excitation device 12 needs to be arranged corresponding to the arrangement mode of the pushing member 11, specifically, as shown in fig. 2 and 3, in this embodiment, the pushing member 11 is provided with an expansion chamber 111, the expansion chamber 111 has an expansion state and a contraction state, and the excitation device 12 is used to excite the expansion chamber 111 to switch between the expansion state and the contraction state so as to expand and contract the pushing member 11.
The excitation device 12 can excite the expansion cavity 111 to switch between the expansion state and the contraction state, and the excitation device 12 may be disposed in various ways, for example, the excitation device 12 may be a filler supply device, the filler supply device is communicated with the expansion cavity 111 and is used for adding the filler into the expansion cavity 111 and extracting the filler from the expansion cavity 111, wherein the filler may be a gas such as air or a liquid such as water; as shown in fig. 2 and fig. 3, in this embodiment, the expansion cavity 111 is filled with a filler, the excitation device 12 is a heating device (the heating device may be a heating wire, an electrical heating tube, etc.), and the heating device is disposed in the expansion cavity 111 for heating the filler in the expansion cavity 111, wherein the filler is air or a low boiling point liquid, for example, in this embodiment, the filler is absolute ethyl alcohol.
The excitation device 12 may be a heating device disposed in the expansion cavity 111, as described above, the expansion cavity 111 is disposed in an open manner, an open edge of the expansion cavity 111 is connected to the inner side wall of the circulation pipeline 2 to cover the open opening of the expansion cavity 111 through the inner side wall of the circulation pipeline 2, so as to close the expansion cavity 111, so that the excitation device 12 may be disposed on the pushing member 11 or the inner side wall of the circulation pipeline 2, specifically, as shown in fig. 2 and 3, in this embodiment, the excitation device 12 is a heating device, the excitation device 12 is disposed to be fixed on the inner side wall of the circulation pipeline 2 for covering the open opening of the expansion cavity 111 in a sealing manner, so as to facilitate installation of the excitation device 12, and an insulating layer may be disposed between the excitation device 12 and the inner side wall of the circulation pipeline 2 to prevent heat generated by the excitation device 12 from being conducted to the inner side wall of the circulation pipeline 2, for example, the excitation device 12 may be bonded to the inner side wall of the circulation line 2 by a heat insulating adhesive.
The working medium driving mechanism 1 excites the pushing piece 11 to expand and contract through the excitation device 12 so as to push the working medium to circularly flow in the circulation pipeline 2, generally, as shown in fig. 1 to 3, the working medium driving mechanism 1 further comprises a controller 13, the controller 13 is electrically connected with the excitation device 12, and thus the working medium driving mechanism 1 can control the excitation device 12 through the controller 13 so as to excite the pushing piece 11 to expand and contract. The working medium driving mechanism 1 may include one or more pushing members 11, for example, a plurality of pushing members 11 are disposed in one-to-one correspondence with the excitation devices 12, when the plurality of pushing members 11 are disposed in the circulation pipeline 2, the plurality of pushing members 11 are disposed along the extending direction of the circulation pipeline 2, and by disposing the plurality of pushing members 11, the working medium driving mechanism 1 can provide a larger driving force. As shown in fig. 2 and 3, two pushing members 11 and two excitation devices 12 are correspondingly arranged, each pushing member 11 includes a first pushing member 11a and a second pushing member 11b, anhydrous ethanol is filled in the first pushing member 11a and the second pushing member 11b, each excitation device 12 includes a first excitation device 12a and a second excitation device 12b, the first excitation device 12a and the second excitation device 12b are heating devices for respectively heating the anhydrous ethanol in the first pushing member 11a and the second pushing member 11b, and when the temperature in the first pushing member 11a and the second pushing member 11b exceeds the boiling point of the anhydrous ethanol, the anhydrous ethanol is gasified and expands in volume, and the first pushing member 11a and the second pushing member 11b expand; when the heating temperature is lower than the boiling point, the absolute ethyl alcohol is liquefied, the volume shrinks, the first pushing piece 11a and the second pushing piece 11b shrink, and the working principle of the working medium driving mechanism 1 will be described by taking two corresponding pushing pieces 11 and the excitation device 12 as an example:
firstly, the controller 13 controls the first excitation device 12a to expand the first pushing member 11a, and the first pushing member 11a presses the working medium in the circulation pipeline 2 to the second excitation device 12b along the arrow direction in fig. 2;
secondly, the controller 13 controls the second excitation device 12b to expand the second pushing piece 11b, so that the working medium in the circulating pipeline 2 is disconnected;
thirdly, the controller 13 controls the first actuating device 12a to contract the first pushing member 11a, and the working medium on the side of the first pushing member 11a away from the second actuating device 12b flows to the first actuating device 12a, as shown in fig. 3;
fourthly, the controller 13 controls the first actuating device 12a to expand the first pushing member 11a and controls the second actuating device 12b to contract the second pushing member 11 b;
then, the second step to the fourth step are cyclically executed, so that the working medium in the circulation pipeline 2 can be driven to circularly flow along the arrow direction in fig. 2 and 3.
The pushing part 11 of the working medium driving mechanism 1 provided by the embodiment of the invention can expand and contract, when the pushing part 11 is arranged in the circulation pipeline 2 of the heat dissipation device 100, the pushing part 11 can be excited to expand and contract through the excitation device 12 so as to push the working medium in the circulation pipeline 2 to circularly flow, the structure and the control of the working medium driving mechanism 1 are simpler, the heat generated by the working medium driving mechanism 1 during working is less, and the pushing part 11 is arranged in the circulation pipeline 2, so that the heat dissipation device 100 applying the working medium circulating flow 1 has a compact volume, and can be suitable for heat dissipation of equipment with higher space requirements, such as a notebook computer and the like.
The embodiment of the present invention further provides a heat dissipation apparatus, as shown in fig. 1, the heat dissipation apparatus 100 includes a working medium driving mechanism 1 and a circulation pipeline 2.
As shown in fig. 2 and fig. 3, the pushing member 11 of the working medium driving mechanism 1 is disposed in the circulation pipeline 2, the circulation pipeline 2 is filled with the working medium, and the working medium can be driven by the working medium driving mechanism 1 to circularly flow in the circulation pipeline 2.
In order to ensure that the working fluid only flows in a one-way circulation manner in the circulation pipeline 2 in a clockwise direction or a counterclockwise direction, in the present embodiment, a one-way valve (not shown in the figure) is arranged on the circulation pipeline 2. Specifically, one or more check valves may be provided, for example, two check valves may be provided on the circulation line 2, and the two check valves are located on both sides of the working medium driving mechanism 1 in the extending direction of the circulation line 2; or when the pushing member 11 is provided with a plurality of pushing members 11 along the extending direction of the circulation pipeline 2, a plurality of check valves are provided corresponding to the plurality of pushing members 11, so that two sides of each pushing member 11 in the extending direction of the circulation pipeline 2 are provided with one check valve. The position of the check valve on the circulation line 2 can be set according to actual requirements, for example, the check valve can be arranged near the pushing member 11.
The circulating pipeline 2 is filled with working medium which can be water and the like. Specifically, in this embodiment, the circulation pipeline 2 is filled with a liquid metal working medium or a liquid metal mixed working medium, where the liquid metal is a metal material with a melting point less than 300 ℃, such as a gallium-based alloy, a bismuth-based alloy, and the like, and the liquid metal may be composed of a single metal material or may be formed by mixing multiple metal materials, for example, the liquid metal working medium may be a gallium indium alloy liquid metal with a melting point of 15.6 ℃. The liquid metal mixed working medium is composed of liquid metal and nonmetal liquid, the nonmetal liquid comprises at least one of electrolyte, absolute ethyl alcohol, isopentane and other low boiling point working media, for example, the liquid metal mixed working medium can be a liquid metal mixed working medium composed of gallium indium tin alloy liquid metal at 11 ℃ and n-butane. The heat dissipation device 100 uses liquid metal or liquid metal mixed working medium as heat dissipation working medium to dissipate heat, and the heat conductivity coefficient of the liquid metal is higher than that of water by more than one order of magnitude, so that the heat dissipation device 100 can obtain higher heat dissipation efficiency and is suitable for high-power high-heat-flow-density heat dissipation occasions.
Generally, as shown in fig. 1, the circulation pipeline 2 includes a cooling section 21 and a heat conducting section 22, the heat conducting section 22 is used for thermally conducting with a device to be cooled (in this embodiment, the heat conducting section 22 is provided with a heat conducting member 4 for thermally conducting with the device to be cooled, wherein the heat conducting member 4 may be in direct contact with the device to be cooled, or may be in contact with the device to be cooled through a thermal interface material, for example, the heat conducting member 4 may be in contact with the device to be cooled through a thermal grease), after the heat of the device to be cooled is absorbed by the heat conducting section 22, will flow to the cooling section 21 for cooling (in this embodiment, the heat dissipation apparatus 100 further includes a cooling mechanism 3 disposed corresponding to the cooling section 21, the cooling mechanism 3 is used for cooling the cooling section 21, wherein the cooling mechanism 3 may adopt an air cooling, water cooling or other cooling form), and the cooled working medium may flow circularly to the heat conducting section 22 to continue to absorb the heat of the heat dissipated by the heat dissipation device.
The shapes of the cooling section 21 and the heat conducting section 22 can be set according to actual requirements, and both the cooling section 21 and the heat conducting section 22 can be straight tubes extending along a straight line, or polygonal tubes extending along a folding line, and the like, as shown in fig. 1, in this embodiment, the cooling section 21 is bent and extended in a direction, and the cooling section 21 is a serpentine tube bent back and forth, so that the heat dissipation area can be increased.
As shown in fig. 1, the pusher 11 is located between the cooling section 21 and the heat conducting section 22. This prevents the pusher 11 from being affected by the heat sink device heat and cooling mechanism 3.
The embodiment of the present invention further provides a control method of the working medium driving mechanism, where the pushing part of the working medium driving mechanism includes a first pushing part and a second pushing part, and correspondingly, the excitation device of the working medium driving mechanism includes a first excitation device and a second excitation device, the first excitation device is configured to excite the first pushing part to expand and contract, and the second excitation device is configured to excite the second pushing part to expand and contract, as shown in fig. 4, in this embodiment, the control method includes the following steps:
and step S110, controlling the first excitation device to expand the first pushing piece.
Specifically, in this embodiment, the initial states of the first pushing member and the second pushing member are both contracted, and the working medium driving mechanism controls the first excitation device and the second excitation device through the controller to expand and contract the first pushing member and the second pushing member, respectively.
After step S110, the controller executes a driving process of the working medium driving mechanism in a cycle, where the driving process of the working medium driving mechanism includes:
and step S120, controlling a second excitation device to expand the second pushing piece.
Step S130, controlling the first excitation device to enable the first pushing piece to contract;
and step S140, controlling the first excitation device and the second excitation device to expand the first pushing piece and contract the second pushing piece.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A working medium drive mechanism, comprising:
the pushing piece can expand and contract and is used for being arranged in a circulating pipeline of the heat dissipation device; and the number of the first and second groups,
and the excitation device is used for exciting the pushing piece to expand and contract so as to push the working medium in the circulating pipeline through the expansion and contraction of the pushing piece.
2. The working medium driving mechanism according to claim 1, further comprising a controller electrically connected to the excitation device; and/or the presence of a gas in the gas,
the pushing pieces and the excitation devices are arranged in a one-to-one correspondence mode, and the pushing pieces are arranged along the extending direction of the circulating pipeline.
3. Working medium drive mechanism according to claim 1, characterized in that the pusher is provided with an expansion chamber having an expanded state and a contracted state, the activating means being adapted to activate the expansion chamber to switch between the expanded state and the contracted state for expanding and contracting the pusher.
4. Working medium driving mechanism according to claim 3, characterized in that the excitation device is a filler supply device, which is in communication with the expansion chamber for adding and extracting filler into and from the expansion chamber; or,
the expansion cavity is filled with filler, the excitation device is a heating device, and the heating device is arranged in the expansion cavity and used for heating the filler in the expansion cavity.
5. Working medium driving mechanism according to claim 4, characterized in that the filler is air or absolute ethyl alcohol; and/or the presence of a gas in the gas,
the pushing piece is made of rubber.
6. The working medium driving mechanism according to claim 3, wherein the expansion chamber is open, and an open edge of the expansion chamber is connected with an inner side wall of the circulation pipeline to hermetically cover an opening of the expansion chamber through the inner side wall of the circulation pipeline so as to close the expansion chamber.
7. A heat dissipating device, comprising:
a circulation line; and the number of the first and second groups,
the working medium driving mechanism is as claimed in any one of claims 1 to 6, and a pushing piece of the working medium driving mechanism is arranged in the circulating pipeline.
8. The heat dissipating device of claim 7, wherein said circulation line comprises a cooling section and a heat conducting section, wherein:
the pushing piece is positioned between the cooling section and the heat conducting section; and/or the presence of a gas in the gas,
the heat dissipation device also comprises a cooling mechanism arranged corresponding to the cooling section, and the cooling mechanism is used for cooling the cooling section; and/or the presence of a gas in the gas,
the cooling section is bent and extended back and forth; and/or the presence of a gas in the gas,
the heat conducting section is provided with a heat conducting piece for heat conduction with a device to be cooled.
9. The heat dissipation device of claim 7, wherein the circulation pipeline is filled with a liquid metal working medium or a liquid metal mixed working medium, wherein the liquid metal mixed working medium comprises a liquid metal and a non-metal liquid.
10. The heat dissipating device of claim 9, wherein the liquid metal comprises at least one of a gallium-based alloy, a bismuth-based alloy; the non-metal liquid comprises at least one of electrolyte, absolute ethyl alcohol and isopentane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010633233.0A CN113891611A (en) | 2020-07-02 | 2020-07-02 | Working medium driving mechanism and heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010633233.0A CN113891611A (en) | 2020-07-02 | 2020-07-02 | Working medium driving mechanism and heat dissipation device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910751A (en) * | 2004-01-22 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | Method and system for cooling at least one electronic device |
| CN105781948A (en) * | 2016-03-16 | 2016-07-20 | 三峡大学 | Silencing pump |
| CN210195942U (en) * | 2019-04-17 | 2020-03-27 | 陈志雄 | Expansion type driving device |
| CN212910506U (en) * | 2020-07-02 | 2021-04-06 | 中国科学院理化技术研究所 | Working medium driving mechanism and heat dissipation device |
-
2020
- 2020-07-02 CN CN202010633233.0A patent/CN113891611A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910751A (en) * | 2004-01-22 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | Method and system for cooling at least one electronic device |
| CN105781948A (en) * | 2016-03-16 | 2016-07-20 | 三峡大学 | Silencing pump |
| CN210195942U (en) * | 2019-04-17 | 2020-03-27 | 陈志雄 | Expansion type driving device |
| CN212910506U (en) * | 2020-07-02 | 2021-04-06 | 中国科学院理化技术研究所 | Working medium driving mechanism and heat dissipation device |
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