A water-cooled heat sink

Abstract

The utility model discloses a water -cooled radiator, it includes frame, and both sides of frame lateral wall all is equipped with header, and the inner wall of header is equipped with a plurality of flat -tube, and one header top is equipped with water inlet, and another header top is equipped with water outlet, and header top is equipped with exhaust component, and the inside of flat -tube is equipped with heat dissipation subassembly, this kind of water -cooled radiator, through the bubble in the collection of gas ring pipe collection cooling water from the gas pipe into the gas collection chamber, after gas reaches a certain number, control exhaust valve makes gas concentrate from the exhaust pipe and is convenient for collecting and discharging the bubble produced when unmanned aerial vehicle flight vibration, effectively reduces the thermal resistance, improves the heat dissipation efficiency, and the cooling water in the expansion tank is convenient for supplementing when the air pressure reduces in the header, and the pressure is balanced conveniently, secondly, the vortex produced by the spoiler column and the recess is convenient for destroying the cooling water thermal boundary layer, and the flow guide vane improves the cooling water flow rate under the venturi effect, and strengthens the heat exchange power.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) heat dissipation technology, specifically a water-cooled radiator. Background Technology

[0002] Unmanned vehicles, abbreviated as "drones" or URMs, are devices operated by radio remote control equipment and onboard program control devices, or by an onboard computer that operates autonomously, either completely or intermittently. High-performance multi-rotor drones and vertical take-off and landing fixed-wing drones require a titanium alloy water-cooled radiator due to their continuously increasing mission payload power density.

[0003] The prior art patent document CN220021096U provides a heat sink, including a substrate, a plurality of heat pipes on the substrate, heat dissipation fins on the free ends of the heat pipes, the heat pipes being divided into an evaporation zone and a condensation zone along the direction away from the substrate, a slot on the substrate, the evaporation zone being fixed in the slot, the evaporation zone contacting the substrate and being heated, and then transferring the heat to the condensation zone, the heat on the heat dissipation fins and the condensation zone being carried away by wind and air. Compared with the later addition of heat dissipation fins to the heat pipes, the heat pipes and heat dissipation fins of this utility model are integrally formed, the thermal resistance between the heat dissipation fins and the heat pipes is smaller, so the heat dissipation efficiency of the heat pipes is higher. The heat dissipation fins are directly carved out of the heat pipes using a shaving process, so that the heat dissipation fins and the heat pipes are integrally formed, and the heat dissipation fins can be very thin, with low processing difficulty.

[0004] Although the device has many beneficial effects, the following problems still exist: During the use of the device, the vibration generated by the drone during flight can easily cause air bubbles to form in the cooling water inside the heat pipe, which increases thermal resistance and affects heat dissipation efficiency; secondly, during the use of the device, the cooling water inside the heat pipe is in a laminar flow state and the flow rate of the cooling water is not fast enough, which affects the heat exchange power and needs to be improved. In view of this, we propose a water-cooled radiator. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved: To address the issues mentioned above, such as the vibration generated during drone flight leading to air bubbles in the cooling water inside the heat pipe, which increases thermal resistance and affects heat dissipation efficiency, and the laminar flow of the cooling water inside the heat pipe with insufficient flow rate, thus affecting heat exchange power, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a water-cooled radiator that facilitates the collection and discharge of air bubbles generated during the flight vibration of a drone, effectively reduces thermal resistance, improves heat dissipation efficiency, facilitates the disruption of the cooling water thermal boundary layer, increases the cooling water flow rate, and enhances heat exchange power.

[0008] 2. Technical Solution: To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A water-cooled radiator includes a frame with manifolds on both side walls. Multiple flat tubes are arranged on the inner wall of each manifold. One manifold has an inlet at its top, and the other has an outlet at its top. An exhaust assembly is located at the top of each manifold. The exhaust assembly includes a gas collecting chamber with an exhaust pipe at its top. An exhaust valve is located on the inner circumference of the exhaust pipe. A gas delivery pipe is located at the bottom of the gas collecting chamber, and a gas collecting ring pipe is located at its bottom. A microporous filter membrane is located on the bottom circumference of the inner wall of the gas collecting ring pipe. An expansion tank is located at the top of the other manifold. An elastic diaphragm is located on the inner side wall of the expansion tank. A water delivery pipe is located on one side of the bottom of the expansion tank. The side of the diaphragm away from the water delivery pipe is filled with inert gas. A heat dissipation component is located inside each flat tube. The inert gas absorbs pressure pulsations and shocks, facilitating buffering and compensating for pressure fluctuations within the expansion tank.

[0009] In a preferred embodiment of this water-cooled radiator, the heat dissipation assembly includes multiple partitions. Each partition has a baffle column on both sides. Multiple grooves are formed at the top and bottom of the flat tube's inner cavity. Two shape-memory metal plates are provided on each side of the partitions, and guide vanes are provided at the other ends of the two shape-memory metal plates. Heat dissipation fins are provided at the top of the flat tube. The multiple grooves increase the heat exchange area and improve the heat dissipation effect.

[0010] As a preferred embodiment of the water-cooled radiator of this utility model, the inner wall of the gas collecting ring tube is polished, and the microporous filter membrane is made of Teflon.

[0011] In a preferred embodiment of the water-cooled radiator of this utility model, the elastic diaphragm is made of hydrogenated nitrile rubber, and a one-way valve is provided on the inner circumferential wall of the gas delivery pipe.

[0012] In a preferred embodiment of this water-cooled radiator, the baffle columns are teardrop-shaped, with their tips aligned with the cooling water flow direction, and adjacent baffle columns are staggered. The streamlined shape of the baffle columns facilitates smoother cooling water flow.

[0013] In a preferred embodiment of the water-cooled radiator of this utility model, the manifold, flat tube, baffle, guide vane, and heat dissipation fins are all made of titanium alloy, and the shape memory metal sheet is made of titanium-nickel alloy.

[0014] In a preferred embodiment of the water-cooled radiator of this utility model, the cross-section of the heat dissipation fins is a wavy shape with concave and convex circulation, and the top of the heat dissipation fins is attached to the bottom of another flat tube.

[0015] 3. Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are: This type of water-cooled radiator collects air bubbles in the cooling water through a gas collection ring pipe and enters the gas collection chamber through the gas delivery pipe. When the gas reaches a certain amount, the exhaust valve is controlled to concentrate the gas and discharge it from the exhaust pipe. This facilitates the collection and discharge of air bubbles generated during the vibration of the UAV during flight, effectively reducing thermal resistance and improving heat dissipation efficiency. The cooling water inside the expansion tank can be replenished when the gas pressure inside the manifold decreases, which is convenient for balancing the pressure. This type of water-cooled radiator uses vortices generated by turbulence columns and grooves to easily disrupt the thermal boundary layer of the cooling water, and uses guide vanes to increase the cooling water flow rate under the Venturi effect, thereby enhancing heat exchange power. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a water-cooled radiator according to the present invention; Figure 2 This is a schematic diagram showing the dissipation component structure of a water-cooled radiator according to the present invention. Figure 3 This is a schematic diagram showing the disassembled frame structure of a water-cooled radiator according to the present invention; Figure 4 This is a schematic diagram of the upper mold structure of a water-cooled radiator according to the present invention; Figure 5 This is a schematic diagram of the unloading assembly structure of a water-cooled radiator according to the present invention.

[0017] The following are the labeling instructions in the diagram: 1. Frame; 2. Manifold; 3. Flat tube; 4. Inlet; 5. Outlet; 6. Exhaust assembly; 7. Heat dissipation assembly; 601. Air collection chamber; 602. Exhaust pipe; 603. Exhaust valve; 604. Air supply pipe; 605. Air collection ring pipe; 606. Microporous filter membrane; 607. Expansion tank; 608. Elastic diaphragm; 609. Water supply pipe; 610. One-way valve; 611. Second temperature sensor; 612. Support plate; 613. Check valve; 701. Partition plate; 702. Baffle column; 703. Groove; 704. Memory metal sheet; 705. Guide plate; 706. Heat dissipation fins. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0023] This utility model provides an overall structural diagram of an embodiment of a water-cooled radiator, including: Please see Figures 1-5This embodiment of a water-cooled radiator includes a frame 1. Both sides of the frame 1 are welded with manifolds 2. Multiple flat tubes 3 are welded to the inner wall of each manifold 2, facilitating the even distribution of cooling water to the flat tubes 3. One manifold 2 has an inlet 4 welded to its top, and the other manifold 2 has an outlet 5 welded to its top. The inlet 4 and outlet 5 are respectively connected to both ends of an external pump body for circulating cooling water. An exhaust assembly 6 is welded to the top of each manifold 2. The exhaust assembly 6 includes a gas collecting chamber 601. An exhaust pipe 602 is welded to the top of the gas collecting chamber 601. An exhaust valve 603 is threaded onto the inner circumference of the exhaust pipe 602. The exhaust valve 603 controls the gas collected inside the gas collecting chamber 601 to be discharged from the exhaust pipe 602 once a certain amount is reached. An air supply pipe 604 is welded to the bottom of the gas collecting chamber 601. A gas collecting ring pipe 605 is welded on, which is used to collect air bubbles in the cooling water and allow them to enter the gas supply pipe 604. A microporous filter membrane 606 is bonded to the bottom of the inner circumference of the gas collecting ring pipe 605 to prevent cooling water from entering the gas collecting ring pipe 605 along with the air bubbles. An expansion tank 607 is welded to the top of another manifold 2. An elastic diaphragm 608 is bonded to the inner side wall of the expansion tank 607. A water supply pipe 609 is welded to one side of the bottom of the expansion tank 607. The side of the diaphragm 608 away from the water supply pipe 609 is filled with inert gas. When the air bubbles in the cooling water are collected and discharged, the air pressure inside the manifold 2 decreases. The elastic diaphragm 608 moves to one side, pushing the cooling water inside the expansion tank 607 to replenish the manifold 2, which facilitates the adjustment of air pressure. The inert gas is used to provide pre-charge pressure. A heat dissipation component 7 is welded inside the flat tube 3.

[0024] It is worth noting that, to improve the heat exchange effect, the heat dissipation component 7 specifically includes multiple baffles 701. The baffles 701 increase the contact area between the cooling water and the flat tube 3, making heat dissipation more uniform. Each baffle 701 has turbulence columns 702 welded to its sidewalls. These turbulence columns 702 generate vortices, severely disrupting the boundary layer of the coolant and greatly improving the coolant's heat exchange efficiency. Multiple grooves 703 are formed at the top and bottom of the inner cavity of the flat tube 3. These grooves 703 generate continuous and stable vortices at the microscopic level, further improving the heat exchange effect. Each baffle 701 has two shape memory metal sheets 704 welded to its sidewalls. A guide vane 705 is welded to the other end of each shape memory metal sheet 704. The guide vane 705 narrows the cooling water flow channel. The Venturi effect reduces pressure, accelerates the flow of cooling water, and increases heat dissipation power. The shape memory metal sheet 704 bends at different temperatures, thereby adjusting the spacing between the two guide vanes 705, and then adjusting the cooling water flow rate according to the temperature. The top of the flat tube 3 is welded with heat dissipation fins 706, which are designed to better contact the air for heat dissipation.

[0025] Next, in order to better collect air bubbles, the inner wall of the gas collecting ring tube 605 is polished, and the microporous filter membrane 606 is made of Teflon. The polishing of the inner wall of the gas collecting ring tube 605 prevents air bubbles from adhering, making it easier for air bubbles to enter the gas collecting chamber 601. The Teflon microporous filter membrane 606 facilitates better air permeability and waterproofing.

[0026] Meanwhile, to prevent gas backflow, specifically, the elastic diaphragm 608 is made of hydrogenated nitrile rubber, and a one-way valve 610 is threaded on the inner circumference of the gas pipe 604. The elastic diaphragm 608 made of hydrogenated nitrile rubber is more resistant to high temperature and corrosion and is more suitable for UAV cooling water. The one-way valve 610 prevents the collected gas from flowing back into the cooling water.

[0027] Furthermore, to make heat exchange more efficient, the turbulence column 702 is teardrop-shaped, with the tip of the turbulence column 702 in the same direction as the cooling water flow. The positions of adjacent turbulence columns 702 are staggered. The teardrop-shaped turbulence columns 702 with the tip in the same direction as the cooling water flow greatly reduce the pressure drop caused by the tail vortex shedding and reduce the cooling water flow resistance. The staggered arrangement of adjacent turbulence columns 702 facilitates sufficient disturbance of the cooling water, thereby efficiently transferring heat to the baffle 701.

[0028] It is worth noting that, in order to better adapt to the needs of drones, the following components are specifically made of titanium alloy: the manifold 2, flat tube 3, partition 701, guide vane 705, and heat dissipation fin 706. The shape memory metal sheet 704 is made of titanium-nickel alloy. The titanium alloy components of the manifold 2, flat tube 3, partition 701, guide vane 705, and heat dissipation fin 706 help to reduce weight and adapt to the flight requirements of drones. The titanium-nickel alloy shape memory metal sheet 704 helps to improve strength and avoid damage after repeated temperature changes.

[0029] Finally, to improve the heat dissipation effect, specifically, the cross-section of the heat dissipation fin 706 is a concave-convex circular wave shape, and the top of the heat dissipation fin 706 is attached to the bottom of another flat tube 3. The concave-convex circular wave shape of the heat dissipation fin 706 facilitates the increase of the contact area with the air and improves the heat exchange effect. The attachment of the top of the heat dissipation fin 706 to the bottom of another flat tube 3 facilitates the simultaneous heat dissipation on both sides of the flat tube 3.

[0030] Combination Figures 1-5 The water-cooled radiator of this embodiment is used in the following specific way: 1: When this device is used as a water-cooled radiator, the water-cooled radiator plate is attached to the device of the UAV that needs to dissipate heat. The inlet 4 and outlet 5 are respectively connected to the two ends of the external pump body. The external pump body drives the cooling water circulation. The air bubbles have a low density and move upward with the cooling water flow, thus entering the gas collecting ring pipe 605. The gas enters the gas collecting chamber 601 from the gas delivery pipe 604 for collection. After the gas collected in the gas collecting chamber 601 reaches a certain amount, the exhaust valve 603 is controlled to discharge the gas from the exhaust pipe 602. When the air bubbles in the cooling water are collected and discharged, the gas pressure inside the manifold 2 decreases, and the elastic diaphragm 608 moves to one side to push the cooling water inside the expansion tank 607 to replenish the manifold 2. 2: Welding multiple baffles 701 to form multiple narrow channels increases the contact area between the cooling water and the flat tube 3; welding multiple turbulence columns 702 to generate large vortices; opening multiple grooves 703 to generate small vortices; in conjunction with disrupting the boundary layer of the coolant; guide vanes 705 to narrow the cooling water flow channels, reduce pressure, and accelerate the flow of cooling water; shape memory metal sheet 704 bends at different temperatures to adjust the spacing between the two guide vanes 705; heat dissipation fins 706 are welded to the top of the flat tube 3 and attached to the bottom of another flat tube 3, so that the drone can dissipate heat by contacting the air during flight.

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water-cooled radiator, characterized in that, The frame (1) includes a frame (1) with two side walls provided with collecting pipes (2). The inner wall of the collecting pipes (2) is provided with multiple flat pipes (3). One of the collecting pipes (2) is provided with an inlet (4) at the top, and the other collecting pipe (2) is provided with an outlet (5) at the top. The top of the collecting pipe (2) is provided with an exhaust assembly (6). The exhaust assembly (6) includes an air collecting chamber (601). The top of the air collecting chamber (601) is provided with an exhaust pipe (602). The inner circumference of the exhaust pipe (602) is provided with an exhaust valve (603). The air collecting chamber (601) is... The bottom of the pipe (2) is provided with a gas supply pipe (604), the bottom of the gas supply pipe (604) is provided with a gas collecting ring pipe (605), the bottom of the inner circumference of the gas collecting ring pipe (605) is provided with a microporous filter membrane (606), the top of the other pipe (2) is provided with an expansion tank (607), the inner side wall of the expansion tank (607) is provided with an elastic diaphragm (608), the bottom side of the expansion tank (607) is provided with a water supply pipe (609), the side of the diaphragm (608) away from the water supply pipe (609) is filled with inert gas, and the flat pipe (3) is provided with a heat dissipation component (7).

2. The water-cooled radiator according to claim 1, characterized in that, The heat dissipation assembly (7) includes multiple partitions (701), each of the partitions (701) has a baffle column (702) on both sides of its sidewalls, the flat tube (3) has multiple grooves (703) at the top and bottom of its inner cavity, each of the partitions (701) has two memory metal sheets (704) on both sides of its sidewalls, the other end of each memory metal sheet (704) has a guide plate (705), and the top of the flat tube (3) has a heat dissipation fin (706).

3. The water-cooled radiator according to claim 2, characterized in that, The inner wall of the gas collecting ring tube (605) is polished, and the microporous filter membrane (606) is made of Teflon.

4. The water-cooled radiator according to claim 3, characterized in that, The elastic diaphragm (608) is made of hydrogenated nitrile rubber, and a one-way valve (610) is provided on the inner circumference of the gas pipeline (604).

5. The water-cooled radiator according to claim 4, characterized in that, The turbulence column (702) is teardrop-shaped, and the tip of the turbulence column (702) is in the same direction as the cooling water flow. The positions of adjacent turbulence columns (702) are staggered.

6. The water-cooled radiator according to claim 5, characterized in that, The current collector (2), flat tube (3), partition (701), flow guide (705), and heat dissipation fin (706) are all made of titanium alloy, and the shape memory metal sheet (704) is made of titanium-nickel alloy.

7. The water-cooled radiator according to claim 6, characterized in that, The heat dissipation fin (706) has a wavy cross-section with concave and convex patterns, and the top of the heat dissipation fin (706) is attached to the bottom of another flat tube (3).

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