Working medium charging system of vapor chamber

Abstract

The embodiment of the invention provides a working medium charging system of a vapor chamber. The working medium charging system of the vapor chamber comprises a charging module and a centrifugal module, the charging module comprises an injector, and the injector is used for injecting a working medium into a charging pipe; the centrifugal module is fixed to one side of the injector and used for transferring the working medium in the filling pipe to a cavity in the vapor chamber. The working medium is injected into the cavity in the vapor chamber through the charging module and the centrifugal module, and the working medium injection quality of the vapor chamber is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of radiator technology, and more specifically, to a working fluid charging system for a heat exchanger. Background Technology

[0002] A vapor chamber is a heat dissipation device that can rapidly transfer and diffuse heat flow accumulated on the surface of a heat source to a large-area condensation surface, thereby promoting heat dissipation and reducing the heat flux density on the surface of components. However, existing vapor chamber technologies often employ a process of injecting liquid first and then evacuating the vacuum, which results in poor quality of the injected working fluid.

[0003] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0004] One object of the present invention is to provide a new technical solution for the working fluid filling system of a heat spreader.

[0005] According to a first aspect of the present invention, a working fluid filling system for a heat exchanger is provided, wherein the working fluid filling system for the heat exchanger comprises:

[0006] A filling module, the filling module including a syringe, the syringe being used to inject a working medium into a filling tube;

[0007] A centrifuge module, fixed to one side of the syringe, is used to transfer the working fluid in the filling tube to the cavity inside the heat spreader.

[0008] Optionally, the syringe includes an injection tube for connection to a filling tube.

[0009] Optionally, the filling module further includes a pumping device and a storage tank, the storage tank being used to store the working medium, and one end of the storage tank being connected to the syringe; the pumping device being connected to the other end of the storage tank for pumping the working medium in the storage tank to the syringe.

[0010] Optionally, the filling module further includes a liquid pipeline, which includes a first liquid pipeline and a second liquid pipeline. The first liquid pipeline is connected between the syringe and the storage tank, and the second liquid pipeline is connected between the pumping device and the storage tank.

[0011] Optionally, the centrifugal module includes a fixed fixture, a frustum, and a driving device. The fixed fixture is disposed on one side of the frustum, and the driving device is disposed on the side of the frustum opposite to the fixed fixture.

[0012] Optionally, the fixing fixture includes a first fixing fixture and a second fixing fixture, wherein the first fixing fixture is used to fix the heat spreader and the second fixing fixture is used to fix the filling pipe.

[0013] Optionally, it also includes a control module, which is electrically connected to at least one of the filling module and the centrifugation module.

[0014] Optionally, the filling module further includes a pumping device and a storage tank, the storage tank being used to store the working fluid, and one end of the storage tank being connected to the syringe; the pumping device includes a first motor and a volumetric pump, the first motor being electrically connected to the control module, and the volumetric pump being connected to the other end of the storage tank;

[0015] The first motor can drive the volumetric pump to operate under the control of the control module, so as to pump the working fluid in the storage tank to the syringe.

[0016] Optionally, the centrifugal module includes a frustum and a drive device. The drive device includes a second motor and a transmission device. The second motor is electrically connected to the control module, and the transmission device is connected between the second motor and the frustum.

[0017] The second motor can drive the transmission device to rotate under the control of the control module.

[0018] Optionally, the maximum rotational speed of the frustum is ω, and the radius of the frustum is R;

[0019] Where, ω 2 R≥300rad 2 ·m / s 2 .

[0020] According to an embodiment of the present invention, a working fluid filling system for a heat exchanger plate is provided. The working fluid filling system for the heat exchanger plate includes a filling module and a centrifugation module. The filling module includes a syringe for injecting the working fluid into a filling tube. The centrifugation module is fixed to one side of the syringe for transferring the working fluid in the filling tube to a cavity within the heat exchanger plate. By injecting the working fluid into the cavity within the heat exchanger plate through the filling module and the centrifugation module, the quality of working fluid injection into the heat exchanger plate is effectively guaranteed.

[0021] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0023] Figure 1 This is a schematic diagram of the working fluid filling system of the heat exchange plate in one embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the syringe structure in one embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the centrifuge module in one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Filling module; 11. Syringe; 111. Frame; 112. Slide rail; 113. Slider; 114. Injection tube; 12. Pumping device; 13. Storage tank; 14. Liquid pipeline; 141. First liquid pipeline; 142. Second liquid pipeline;

[0028] 2. Centrifuge module; 21. Fixture; 211. First fixture; 2111. First groove; 212. Second fixture; 2121. Second groove; 22. Frustum; 23. Drive device;

[0029] 3. Control module. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0031] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] According to one embodiment of this application, a working fluid filling system for a heat spreader is provided, see [link to relevant documentation]. Figures 1 to 3As shown, the heat exchanger has a working fluid filling system with a filling module 1 and a centrifugation module 2. The filling module 1 includes a syringe 11, which is used to inject the working fluid into the filling tube. The centrifugation module 2 is fixed to one side of the syringe 11 to transfer the working fluid in the filling tube to the cavity inside the heat exchanger.

[0034] Specifically, in use, the working fluid filling system of the heat spreader described in this application embodiment first installs the filling tube on the heat spreader, then injects the working fluid into the filling tube through the syringe 11 of the filling module 1, and then transfers the working fluid in the filling tube to the cavity inside the heat spreader through the centrifugation module 2.

[0035] Since the syringe 11 of the filling module 1 is connected to the filling tube when the working medium is injected into the filling tube, and the centrifugation module 2 is fixed to one side of the syringe 11, the injection quality of the working medium into the filling tube can be effectively improved, and the transfer quality of the working medium in the filling tube when it is transferred to the cavity in the heat spreader can be guaranteed.

[0036] Furthermore, since the working fluid filling system of the heat spreader in this embodiment is modularized into the filling module 1 and the centrifugation module 2, the working fluid filling system of the heat spreader has the advantages of simpler operation, higher working fluid injection accuracy and efficiency, which can better meet the needs of mechanical assembly line production, thereby greatly improving the production efficiency of the heat spreader and significantly reducing the production cost of the heat spreader.

[0037] In addition, for small electronic devices such as mobile phones, AR glasses or VR glasses, their size is small, while the size of traditional heat spreaders is large and difficult to place in these small electronic devices. Therefore, ultra-thin heat spreaders with thinner thickness and smaller size are often used in these small electronic devices, such as ultra-thin heat spreaders with a thickness of less than or equal to 2mm.

[0038] However, in existing technologies, injecting the working fluid into the heat exchanger often employs a process of injecting liquid first and then evacuating the vacuum. For traditional heat exchangers, the injection port is relatively large, making the filling of the working fluid simple and having little impact on the injection quality. But for ultra-thin heat exchangers, the internal space is small, and the injection port is often a narrow channel. Using the process of injecting liquid first and then evacuating the vacuum makes it difficult for the working fluid to be injected into the cavity inside the heat exchanger, thus severely affecting the injection quality.

[0039] Since the working fluid filling system of the heat exchanger plate in this embodiment is modularized into the filling module 1 and the centrifugation module 2, when injecting the working fluid into the cavity inside the ultra-thin heat exchanger plate, the filling tube can be connected to the filling port of the ultra-thin heat exchanger plate first, and then the working fluid can be injected into the filling tube through the syringe 11 of the filling module 1 of the working fluid filling system of the heat exchanger plate. Then, the working fluid in the filling tube can be transferred to the cavity inside the ultra-thin heat exchanger plate through the centrifugation module 2, so that the working fluid can be centrifuged into the cavity inside the heat exchanger plate through the filling tube connected to the heat exchanger plate.

[0040] Furthermore, compared to the existing technology that uses a process of injecting liquid first and then drawing a vacuum, the working fluid filling system of the heat exchange plate described in this application embodiment effectively avoids the problems of the ultra-thin heat exchange plate having a relatively narrow filling port, making it difficult to inject the working fluid, and resulting in poor quality of working fluid injection.

[0041] Optionally, the syringe 11 includes an injection tube 114 for connection to a filling tube.

[0042] Specifically, such as Figure 1 and Figure 2 As shown, the syringe 11 described in this embodiment includes an injection tube 114, which can be inserted into the filling tube to effectively prevent leakage of the working medium from the connection between the injection tube 114 and the filling tube when the working medium is injected into the filling tube, thereby further improving the injection quality of the working medium.

[0043] Wherein, the length of the filling tube is L1, and the length of the injection tube 114 is L2. In order to ensure that the injection tube 114 can penetrate into the filling tube and improve the injection quality of the working fluid, it is preferable that the length L2 of the injection tube 114 is greater than or equal to the length L1 of the filling tube.

[0044] Of course, the injection tube 114 can also be connected to the filling tube by means of threaded connection, flange connection or clamp connection, etc. Those skilled in the art can choose according to actual needs, and this application does not make specific restrictions here.

[0045] When the injection tube 114 and the filling tube are connected by thread, flange or clamp, the connection between the injection tube 114 and the filling tube needs to be sealed.

[0046] In addition, such as Figure 2As shown, the syringe 11 described in this application embodiment further includes a frame 111, a slide rail 112, and a slider 113. The frame 111 is used to fix the slide rail 112. The slider 113 is fixedly disposed on the slide rail 112. The slider 113 can move along the slide rail 112. The injection tube 114 is fixedly disposed on the slider 113.

[0047] Therefore, by moving the slider 113 of the syringe 11, the working medium can be injected into the filling tubes of different positions and sizes, which effectively improves the injection efficiency of the working medium and broadens the applicability of the working medium filling system of the heat spreader plate described in this application embodiment.

[0048] Furthermore, the slide rail 112 described in this application embodiment has a certain angle with the mounting surface, so that when the working medium is injected into the filling tube using the syringe 11, it not only facilitates the insertion of the injection tube 114 into the filling tube, but also further improves the injection efficiency of the syringe 11.

[0049] It should be noted that, in this embodiment of the application, the mounting surface is the side that contacts the bottom of the storage box 13. The mounting surface can be a flat tabletop or a ground. Those skilled in the art can choose according to actual needs, and this application does not impose any specific restrictions here.

[0050] Optionally, the filling module 1 further includes a pumping device 12 and a storage tank 13. The storage tank 13 is used to store the working medium, and one end of the storage tank 13 is connected to the syringe 11. The pumping device 12 is connected to the other end of the storage tank 13 to pump the working medium in the storage tank 13 to the syringe 11.

[0051] Specifically, such as Figure 1 As shown in the embodiment of this application, one end of the storage tank 13 is connected to the syringe 11, and the other end of the storage tank 13 is connected to the pumping device 12. This allows the storage tank 13 to provide the required working medium to the pumping device 12 when the working medium is injected into the filling tube, effectively pumping the working medium from the storage tank 13 to the syringe 11 and improving the working medium injection efficiency and quality of the filling module 1. The storage tank 13 in this embodiment has sufficient volume to inject working medium into multiple heat exchangers. The working medium can be at least one of deionized water, anhydrous ethanol, and a fluorocarbon compound.

[0052] Optionally, the filling module 1 further includes a liquid pipeline 14, which includes a first liquid pipeline 141 and a second liquid pipeline 142. The first liquid pipeline 141 is connected between the syringe 11 and the storage tank 13, and the second liquid pipeline 142 is connected between the pumping device 12 and the storage tank 13.

[0053] Specifically, such as Figure 1 As shown, in this embodiment of the application, the syringe 11, storage tank 13 and pumping device 12 of the filling module 1 are connected by a liquid pipeline 14, which is used to transport the working fluid, thereby further improving the working fluid injection efficiency of the filling module 1.

[0054] The liquid line 14 includes a first liquid line 141 and a second liquid line 142. The first liquid line 141 is connected between the syringe 11 and the storage tank 13, and the second liquid line 142 is connected between the pumping device 12 and the storage tank 13, so that the pumping device 12 can pump the working medium in the storage tank 13 to the syringe 11.

[0055] Furthermore, the material of the liquid conduit 14 needs to be compatible with the working fluid of the heat spreader. For example, when the working fluid is deionized water, the material of the liquid conduit 14 can be everyday plastic (including at least one of high-density polyethylene, polyoxymethylene, polypropylene, polystyrene, and polyvinyl chloride), engineering thermoplastic (including at least one of polyetheretherketone, polyetherimide, polyethersulfone, polyphenylene sulfone, and polysulfone), elastomer (at least one of chloroprene rubber, ethylene propylene diene monomer (EPDM), ethylene propylene diene monomer (EPDM), fluororubber, hydrogenated nitrile rubber, and silicone), brass, or stainless steel, etc. When the working fluid is anhydrous ethanol, the material of the liquid conduit 14 can be everyday plastic, engineering thermoplastic, elastomer, aluminum, or brass, etc. Those skilled in the art can choose according to actual needs, and this application does not impose specific restrictions here.

[0056] Optionally, the centrifugal module 2 includes a fixing fixture 21, a frustum 22, and a driving device 23. The fixing fixture 21 is disposed on one side of the frustum 22, and the driving device 23 is disposed on the side of the frustum 22 opposite to the fixing fixture 21.

[0057] Specifically, such as Figure 1 and Figure 3 As shown in the embodiment of this application, the fixing fixture 21 is disposed on one side of the frustum 22 to fix the filling pipe and the heat spreader; the driving device 23 is disposed on the side of the frustum 22 away from the fixing fixture 21 to drive the frustum 22 to rotate.

[0058] Therefore, when injecting the working medium into the cavity inside the heat exchanger, the filling tube and the heat exchanger can be fixed first by the fixing fixture 21 of the centrifugal module 2, and then the working medium can be injected into the filling tube by the syringe 11 of the filling module 1. Finally, the driving device 23 is driven to rotate the frustum 22, and the frustum 22 drives the heat exchanger and the filling tube to rotate, so as to transfer the working medium in the filling tube to the cavity inside the heat exchanger, thus effectively realizing the filling of the working medium.

[0059] In this embodiment, the frustum 22 is preferably circular to effectively improve the centrifugation rate of the centrifugation module 2. Of course, the frustum 22 can also be other shapes, such as square. Those skilled in the art can choose according to actual needs, and this application does not impose specific limitations here.

[0060] Furthermore, during installation, the centrifuge module 2 described in this application embodiment can be at a certain angle to the mounting surface, and the angle between the centrifuge module 2 and the mounting surface is greater than or equal to 10°, so as to effectively ensure the centrifugation quality of the centrifuge module 2.

[0061] Optionally, the fixing fixture 21 includes a first fixing fixture 211 and a second fixing fixture 212, wherein the first fixing fixture 211 is used to fix the heat spreader plate and the second fixing fixture 212 is used to fix the filling pipe.

[0062] Specifically, such as Figure 3 As shown, in this embodiment of the application, there are multiple first fixing fixtures 211 and multiple second fixing fixtures 212, and the number of multiple first fixing fixtures 211 corresponds to the number of multiple second fixing fixtures 212.

[0063] For example, in the embodiments of this application, one side of the frustum 22 may be provided with only one first fixing fixture 211 and one second fixing fixture 212; or one side of the frustum 22 may be provided with two first fixing fixtures 211 and two second fixing fixtures 212, which are arranged in a centrally symmetrical manner; or one side of the frustum 22 may be provided with three first fixing fixtures 211 and three second fixing fixtures 212, which are spaced apart along the circumferential direction of the frustum 22.

[0064] Among them, such as Figure 3As shown, in this embodiment of the application, six first fixing fixtures 211 and six second fixing fixtures 212 are provided on one side of the frustum 22. The six first fixing fixtures 211 and six second fixing fixtures 212 are spaced apart along the circumferential direction of the frustum 22, so that the frustum 22 can simultaneously transfer the working fluid in the six filling tubes to the cavity in the six heat exchange plates.

[0065] Furthermore, in this embodiment of the application, the first fixing fixture 211 includes a first groove 2111, which is used to fix the heat spreader plate, and the extending direction of the first groove 2111 is parallel to the radial direction of the frustum 22; the second fixing fixture 212 includes a second groove 2121, which is used to fix the filling tube, and the extending direction of the second groove 2121 intersects the radial direction of the frustum 22.

[0066] Therefore, in this embodiment of the application, the heat spreader is fixed by the first groove 2111 and the filling tube is fixed by the second groove 2121, which effectively improves the stability and reliability of the filling tube and the heat spreader when the frustum 22 is rotating.

[0067] Of course, in the embodiments of this application, the filling tube can also be fixed to the frustum 22 by screwing or bonding, or the heat spreader can be fixed to the frustum 22 by screwing or bonding. Those skilled in the art can choose according to actual needs, and this application does not make specific restrictions here.

[0068] Optionally, it also includes a control module 3, which is electrically connected to at least one of the filling module 1 and the centrifugation module 2.

[0069] Specifically, such as Figure 1 As shown, the control module 3 described in this embodiment can be electrically connected to the filling module 1 so that the control module 3 can control the start or stop of the filling module 1, or control the injection volume or injection speed of the syringe 11 of the filling module 1, thereby further improving the quality of the working fluid injection of the filling module 1.

[0070] Furthermore, the control module 3 described in this application embodiment can also be electrically connected to the centrifugation module 2, so that the control module 3 can control the start or stop of the centrifugation module 2, or control the centrifugation speed or centrifugation time of the centrifugation module 2, thereby further improving the quality of the working fluid injection of the centrifugation module 2.

[0071] Of course, the control module 3 described in this application embodiment can also be electrically connected to both the filling module 1 and the centrifugal module 2 to simultaneously control the filling module 1 and the centrifugal module 2, thereby further improving the working fluid injection efficiency of the working fluid filling system of the heat spreader.

[0072] Optionally, the filling module 1 further includes a pumping device 12 and a storage tank 13. The storage tank 13 is used to store the working fluid, and one end of the storage tank 13 is connected to the syringe 11. The pumping device 12 includes a first motor and a volumetric pump. The first motor is electrically connected to the control module 3, and the volumetric pump is connected to the other end of the storage tank 13. The first motor can drive the volumetric pump to operate under the control of the control module 3 to pump the working fluid in the storage tank 13 to the syringe 11.

[0073] Specifically, in this embodiment of the application, the first motor can be a servo motor or a stepper motor. The servo motor or the stepper motor can convert the received electrical signal into a rotation angle, thereby enabling the volumetric pump to operate under the control of the control module 3, and then pumping the working medium in the storage tank 13 to the syringe 11, effectively improving the working medium injection efficiency of the filling module 1.

[0074] In addition, the volumetric pump can be a precision plunger pump. Since the precision plunger pump has the characteristics of high precision, corrosion resistance, wear resistance, long service life, and precise metering adjustment, it can further improve the working fluid injection quality of the filling module 1.

[0075] Optionally, the centrifugal module 2 includes a frustum 22 and a drive device 23. The drive device 23 includes a second motor and a transmission device. The second motor is electrically connected to the control module 3, and the transmission device is connected between the second motor and the frustum 22. The second motor can drive the transmission device to rotate under the control of the control module 3.

[0076] Specifically, in this embodiment, the second motor can be a servo motor or a stepper motor. The servo motor or the stepper motor can convert the received electrical signal into a rotation angle, thereby enabling the transmission device to move under the control of the control module 3, and thus drive the frustum 22 to rotate, so as to transfer the working fluid in the filling tube to the cavity in the heat spreader, effectively improving the working fluid transfer efficiency of the centrifugal module 2.

[0077] Optionally, the maximum rotational speed of the frustum 22 during rotation is ω, and the radius of the frustum 22 is R; where ω 2 R≥300rad 2 ·m / s2 .

[0078] Specifically, this application embodiment sets ω 2 R≥300rad 2 ·m / s 2 This can further improve the injection quality and injection efficiency of the working fluid described in the embodiments of this application.

[0079] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0080] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A working fluid charging system for a heat exchanger, characterized in that, include: A filling module (1) includes a syringe (11) for injecting a working medium into a filling tube; Centrifuge module (2), which is fixed to one side of the syringe (11) for transferring the working fluid in the filling tube to the cavity in the heat spreader.

2. The working fluid charging system for the heat exchanger according to claim 1, characterized in that, The syringe (11) includes an injection tube (114) for connection to a filling tube.

3. The working fluid charging system for the heat exchanger according to claim 1, characterized in that, The filling module (1) further includes a pumping device (12) and a storage tank (13). The storage tank (13) is used to store the working medium, and one end of the storage tank (13) is connected to the syringe (11). The pumping device (12) is connected to the other end of the storage tank (13) to pump the working medium in the storage tank (13) to the syringe (11).

4. The working fluid filling system for the heat exchanger according to claim 3, characterized in that, The filling module (1) further includes a liquid pipeline (14), which includes a first liquid pipeline (141) and a second liquid pipeline (142). The first liquid pipeline (141) is connected between the syringe (11) and the storage tank (13), and the second liquid pipeline (142) is connected between the pumping device (12) and the storage tank (13).

5. The working fluid charging system for the heat exchanger according to claim 1, characterized in that, The centrifugal module (2) includes a fixed fixture (21), a frustum (22) and a drive device (23). The fixed fixture (21) is located on one side of the frustum (22), and the drive device (23) is located on the side of the frustum (22) away from the fixed fixture (21).

6. The working fluid charging system for the heat exchanger according to claim 5, characterized in that, The fixing fixture (21) includes a first fixing fixture (211) and a second fixing fixture (212). The first fixing fixture (211) is used to fix the heat spreader plate, and the second fixing fixture (212) is used to fix the filling pipe.

7. The working fluid charging system for the heat exchanger according to claim 1, characterized in that, It also includes a control module (3), which is electrically connected to at least one of the filling module (1) and the centrifugation module (2).

8. The working fluid charging system for the heat exchanger according to claim 7, characterized in that, The filling module (1) further includes a pumping device (12) and a storage tank (13). The storage tank (13) is used to store the working medium, and one end of the storage tank (13) is connected to the syringe (11). The pumping device (12) includes a first motor and a volumetric pump. The first motor is electrically connected to the control module (3), and the volumetric pump is connected to the other end of the storage tank (13). The first motor can drive the volumetric pump to operate under the control of the control module (3) to pump the working fluid in the storage tank (13) to the syringe (11).

9. The working fluid charging system for the heat exchanger according to claim 7, characterized in that, The centrifugal module (2) includes a frustum (22) and a drive device (23). The drive device (23) includes a second motor and a transmission device. The second motor is electrically connected to the control module (3), and the transmission device is connected between the second motor and the frustum (22). The second motor can drive the transmission device to rotate under the control of the control module (3).

10. The working fluid charging system for the heat exchanger according to claim 9, characterized in that, The maximum rotational speed of the frustum (22) under rotational conditions is ω, and the radius of the frustum (22) is R; Where, ω 2 R≥300rad 2 ·m / s 2 .

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