A sealed, oil-immersion cooling system that eliminates the need for heat dissipation fins.

Abstract

To provide a sealed cooling oil immersion type cooling system that does not require the use of a heat radiation fin and exhibits a more efficient heat radiation effect. [Solution] The sealed cooling oil immersion cooling system of the present invention, which does not require heat dissipation fins, includes a first heat exchange box, a second heat exchange box, and a refrigerator, of which a refrigerant pipe extends from the refrigerator and is introduced into the second heat exchange box, where it is immersed in cooling oil. The refrigerator circulates the refrigerant through the refrigerant pipe, and the refrigerant, after being cooled, exchanges heat with the cooling oil in the second heat exchange box through the refrigerant pipe. The cooled cooling oil is transported and introduced into the first heat exchange box, where it exchanges heat with a heating element placed therein. After absorbing heat and increasing in temperature, the cooling oil is returned to the second heat exchange box, where it exchanges heat again and is cooled down, thereby performing a circulating operation.

Description

Technical Field

[0001] The present invention relates to a sealed cooling oil immersion cooling system that does not require heat dissipation fins.

Background Art

[0002] "Heat dissipation" has become a frequently discussed theme in the current era of Industry 4.0 and information technology. This is because any equipment or device that performs mechanical work generates heat, and if this heat cannot be timely and effectively removed, it will affect work efficiency and may even lead to work stoppage in some cases.

[0003] Taking a wind turbine as an example, a windmill is installed in a place with sufficient wind power, and the main shaft of the fan blade of the windmill is connected to a generator through a gear mechanism. When the fan blade rotates under the action of wind, the gear mechanism can drive the generator to generate electricity. In the process of converting wind power into mechanical power and further converting mechanical power into electric power, a certain amount of mechanical energy is lost due to the frictional force between the gear mechanism and other components, resulting in a decrease in the efficiency of wind power generation. Therefore, in the Republic of China Patent No. I800422 previously filed by the inventor of the present application, a magnetic levitation generator assembly is provided. In this assembly, a main shaft is installed in a housing, the upper and lower ends of the main shaft are respectively supported in a floating state by magnetic levitation support seats, and the side direction of the main shaft is supported by a magnetic levitation bearing. The main shaft further includes at least one rotating disk serving as a rotor of the generator, a plurality of induction magnets are arranged along the circumference on the rotating disk, a plurality of coils are fixed to the housing as a stator along the circumference around the main shaft, and are connected to a power transmission cable. A transmission mechanism is installed at the upper end of the main shaft, and the transmission mechanism is connected to a fan unit or a motor serving as a power source. The fan unit or the motor drives the main shaft to rotate with power, thereby rotating the rotating disk, rotating the induction magnets relative to the coils to generate an induced current, supporting the main shaft in a magnetic levitation manner, and minimizing the resistance of the rotation of the main shaft, thereby realizing a high power output efficiency.

[0004] While magnetic levitation wind turbines belong to the category of green energy devices with higher power generation efficiency, they still suffer from the problem of coil overheating during operation. To overcome this problem, conventional methods have involved forming multiple heat dissipation fins on the generator housing to increase the heat absorption and dissipation area of ​​the housing, and combining this with air cooling to remove heat. However, this heat dissipation method, which combines heat dissipation fins and air cooling, is no longer sufficient to meet the needs of high-power equipment.

[0005] Furthermore, in an era where the computing power of AI is increasing dramatically, more advanced chips generate more heat during operation, and conventional cooling methods can no longer meet the requirements. For this reason, liquid cooling heat dissipation technology has been developing recently. Conventional liquid cooling heat dissipation technology involves immersing a heat-generating element in a non-conductive coolant in a container, and installing refrigeration equipment above the coolant in the container. When the heat-generating element generates heat, the low-boiling-point coolant evaporates, and the evaporated vapor is condensed by refrigeration pipes and returned in liquid form, thus creating a circulation system. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Republic of China Patent No. I800422 Specification [Overview of the project] [Problems that the invention aims to solve]

[0007] The object of the present invention is to provide a finless, sealed-type cooling oil immersion cooling system that does not require the use of heat dissipation fins and exhibits a more efficient heat dissipation effect. [Means for solving the problem]

[0008] The present invention will be described below. The sealed cooling oil immersion cooling system without heat dissipation fins described in claim 1 includes a first heat exchange box, a second heat exchange box, and a refrigerator. The first heat exchange box is used to house a heat-generating element and is equipped with a first cooling oil inlet and a first cooling oil outlet. The second heat exchange box is used to contain cooling oil and is equipped with a second cooling oil inlet and a second cooling oil outlet, the second cooling oil inlet and the first cooling oil outlet are connected by a first pipeline, the second cooling oil outlet and the first cooling oil inlet are connected by a second pipeline, and a pump is installed in the second pipeline. The refrigerant pipe is connected to the refrigerator, the refrigerant pipe is extended and introduced into the second heat exchange box, and is immersed in the cooling oil. In this system, the refrigerator circulates the refrigerant through the refrigerant pipes, and after the refrigerant has cooled, it exchanges heat with the cooling oil in the second heat exchange box via the refrigerant pipes. The cooled cooling oil is then pumped up by the pump and introduced into the first heat exchange box via the second pipeline, where it exchanges heat with the heating element. After absorbing heat and its temperature rises, the cooling oil is returned to the second heat exchange box via the first pipeline, where it undergoes another heat exchange and cools down, thus circulating. In this system, the cooling oil is non-conductive, and the first heat exchange box is The first heat exchange box is cylindrical, with the first cooling oil inlet formed such that its axis aligns tangentially with the arc-shaped side wall, the first cooling oil outlet formed such that its axis is perpendicular to the arc-shaped side wall, a main shaft hole formed at the center of the cylindrical shape, the first heat exchange box used to house the generator of a magnetic levitation generator, the generator's coils being completely immersed in the cooling oil within the first heat exchange box, and the generator's main shaft being inserted through the main shaft hole, and the first heat exchange box is rectangular and used to house a circuit board on which chips are arranged. [Effects of the Invention]

[0009] Preferably, the cooling oil is a non-conductive cooling liquid, which prevents damage to generator coils, circuit boards on which electronic components and circuits are arranged, etc., even when they are immersed in it.

[0010] In one embodiment of the present invention, the first heat exchange box may be cylindrical, and the first cooling oil inlet is formed such that its axis aligns with the tangential direction of the arc-shaped side wall. This allows the cooling oil to flow into the first heat exchange box, flow along the circumference of the cylinder, absorb sufficient heat generated by the heat-generating element, and then return to the second heat exchange box.

[0011] In one embodiment of the present invention, the first cooling oil outlet can be formed in a direction in which its axis is perpendicular to the arc-shaped side wall, so that the cooling oil flows along the cylindrical circumference of the first heat exchange box and then flows out with a slight delay, thereby allowing sufficient absorption of the heat generated by the heat-generating element.

[0012] In one embodiment of the present invention, a main shaft hole may be formed in the cylindrical center of the first heat exchange box, thereby allowing the generator of a magnetic levitation generator to be housed in the first heat exchange box, the coils of the generator to be completely immersed in the cooling oil in the first heat exchange box, and the main shaft of the generator to be inserted through the main shaft hole.

[0013] In one embodiment of the present invention, the first heat exchange box may be rectangular in shape and is used to house a circuit board on which chips are arranged.

[0014] The present invention, through the aforementioned cooling system, has the advantage of preventing oil gas from leaking to the outside and providing a high cooling effect for the cooling oil circulating internally. [Brief explanation of the drawing]

[0015] [Figure 1] This is a plan view of the cooling system of the present invention. [Figure 2]This is a plan cross-sectional view along the II-II direction in Figure 1, showing the structure when the first heat exchange box is cylindrical. [Figure 3] This is a plan view showing an embodiment in which the cylindrical first heat exchange box of the present invention is attached to a magnetic levitation wind turbine. [Figure 4] This is a plan view showing an embodiment in which the circuit board of the present invention is immersed in a rectangular first heat exchange box. [Modes for carrying out the invention]

[0016] As shown in Figure 1, the heat dissipation fin-free sealed cooling oil immersion cooling system of the present invention includes a first heat exchange box 1, a second heat exchange box 2, and a refrigerator 3. The first heat exchange box 1 includes an internal space 13 used as a container for housing a heat-generating element, a first cooling oil inlet 11, and a first cooling oil outlet 12. The second heat exchange box 2 is used as a container for housing cooling oil 5 and includes a second cooling oil inlet 21 and a second cooling oil outlet 22. The second cooling oil inlet 21 and the first cooling oil outlet 12 are connected by a first pipeline 23, and the second cooling oil outlet 22 and the first cooling oil inlet 11 are connected by a second pipeline 24, and a pump 4 is installed in the second pipeline 24. The refrigerator 3 is located outside the second heat exchange box 2, and a refrigerant pipe 31 is connected to the refrigerator 3. The refrigerant pipe 31 is extended and introduced into the second heat exchange box 2 and immersed in the cooling oil 5. More specifically, the refrigerator 3 circulates a low-temperature refrigerant through refrigeration circulation within the refrigerant pipe 31 immersed in the cooling oil 5, and maintains continuous circulation. In the best embodiment of the present invention, the cooling oil 5 is a non-conductive cooling oil.

[0017] The cooling system of the present invention provides the first heat exchange box 1 in an appropriate form according to the difference in the target to be applied. For example, when applied to a magnetic levitation wind turbine, the first heat exchange box 1 is formed in a cylindrical shape (see Figure 2), and the first cooling oil inlet 11 is formed such that the axis is along the tangential direction of the side wall with an arc-shaped axis, and the first cooling oil outlet 12 is formed in a direction perpendicular to the side wall with the arc-shaped axis, and a main shaft hole 14 is formed at the center of the cylinder.

[0018] As shown in Figure 3, in the magnetic levitation wind turbine, a lower magnetic levitation support seat 71A is installed on the bottom surface of the internal space of the housing, and an upper magnetic levitation support seat 71B is installed on the top surface. A first magnetic levitation bearing 72A and a second magnetic levitation bearing 72B are installed vertically in the internal space. The main shaft S is vertically arranged on the first magnetic levitation bearing 72A and the second magnetic levitation bearing 72B, and the upper and lower ends of the main shaft S are respectively connected to the upper magnetic levitation support seat 71B and the lower magnetic levitation support seat 71A. The upper end of the main shaft S extends outside the housing and is further connected to the fan blade through a transmission mechanism such as a gear. A generator 6 is installed on the main shaft S between the first magnetic levitation bearing 72A and the second magnetic levitation bearing 72A. The generator 6 includes a plurality of coils 63 as stators and a first rotating disk 61A and a second rotating disk 61B as rotors. The plurality of coils 63 are fixedly installed around the main shaft S on the housing and are connected to a power transmission cable. The first rotating disk 61A and the second rotating disk 61B are fixed to the main shaft S, and a plurality of first induction magnets 62A and second induction magnets 6B are respectively arranged along the circumference on the first rotating disk 61A and the second rotating disk 61B. When the first induction magnet 62A and the second induction magnet 6B rotate relative to the coil 63, an induced current is generated, and this current is output through the power transmission cable. During the operation of the fan blade, the main shaft S is driven to rotate through the transmission mechanism, and further the first rotating disk 61A and the second rotating disk 61B of the generator 6 are rotated to generate electricity.

[0019] The first heat exchange box 1 in the cooling system of the present invention is used to hermetically accommodate the generator 6, and when the cooling oil 5 fills the first heat exchange box 1, the coil 63 of the generator 6 is completely immersed in the cooling oil 5 in the first heat exchange box 1.

[0020] During the operation of the generator 6, since the coil 63 generates heat, when the cooling system of the present invention is started, the refrigerator 3 is operated to circulate the refrigerant in the refrigerant pipe 31. The refrigerant after temperature reduction exchanges heat with the cooling oil 5 in the refrigerant pipe 31 and the second heat exchange box 2. The cooling oil 5 after temperature reduction is pumped up by the pump 4 and introduced into the first heat exchange box 1 through the second pipeline 24, exchanges heat with the generator 6 to absorb heat. After the temperature in the first heat exchange box 1 rises, the cooling oil 5 is returned into the second heat exchange box 2 through the first pipeline 23, exchanges heat with the refrigerant pipe 31 again to lower the temperature, and the cooling oil 5 after temperature reduction is transported to the first heat exchange box 1 again, and exchanges heat with the generator 6 to perform a circulation operation. Thereby, the heat of the generator can be reduced with high efficiency, and there is no need to use the combination of heat dissipation fins and air for cooling.

[0021] As shown in Figure 4, when high-end chips generate a large amount of heat, conventional air cooling methods cannot meet the requirements. Therefore, multiple circuit boards 8 on which the chips 81 are placed are placed in a first heat exchange box 1A formed as a rectangular body, and power lines are connected to the circuit boards 8 and placed in the first heat exchange box 1A. The operation of the circuits is controlled by conductive connection to an external controller 9. Subsequently, non-conductive cooling oil 5 is injected into the first heat exchange box 1A and the second heat exchange box 2, and the circuit boards 8 on which the chips 81 are placed are immersed in the cooling oil 5 in the first heat exchange box 1A. When the refrigerator 3 is started and operated, the refrigerant is circulated in the refrigerant pipe 31. After the refrigerant has cooled, it exchanges heat with the cooling oil 5 in the second heat exchange box 2 via the refrigerant pipe 31. The cooled cooling oil 5 is then pumped up by the pump 4 and introduced into the first heat exchange box 1 via the second pipeline 24. There, it exchanges heat with the chip 81 or other heat-generating elements on the circuit board 8 and absorbs heat. After the temperature in the first heat exchange box 1 rises, the cooling oil 5 is returned to the second heat exchange box 2 via the first pipeline 23, where it exchanges heat with the refrigerant pipe 31 again to lower its temperature. The cooled cooling oil 5 is then transported back to the first heat exchange box 1 and exchanges heat with the chip 81 or other heat-generating elements, thus completing the circulating operation.

[0022] The present invention, through the aforementioned cooling system, allows the cooling oil to be sealed and circulated within the first heat exchange box 1, 1A and the second heat exchange box 2, preventing oil gas from leaking to the outside and providing the advantage of high cooling efficiency for the cooling oil during internal circulation. [Explanation of Symbols]

[0023] 1. 1A First heat exchange box 11. First Cooling Oil Inlet 12. Second Cooling Oil Outlet 13 Interior space 14 Main shaft hole 2. Second heat exchange box 21. Second Cooling Oil Inlet 22 Second Cooling Oil Outlet 23 1st pipeline 24 2nd pipeline 3. Refrigeration unit 31 Refrigerant pipes 4 pumps 5 Cooling oil 6 Generators 61A First Rotating Disc 61B Second Rotation Disc 62A First induction magnet 62B Second Induction Magnet 63 coils 71A Lower magnetic levitation support seat 71B Upper magnetic levitation support seat 72A First Magnetic Levitation Bearing 72B Second Magnetic Levitation Bearing 8 circuit board 81 chips 9 Controllers S spindle

Claims

[Claim 1] A sealed-type cooling oil immersion cooling system that does not require heat dissipation fins, comprising a first heat exchange box, a second heat exchange box, and a refrigerator, The first heat exchange box is used to house a heat-generating element and is equipped with a first cooling oil inlet and a first cooling oil outlet. The second heat exchange box is used to contain cooling oil and is equipped with a second cooling oil inlet and a second cooling oil outlet, the second cooling oil inlet and the first cooling oil outlet are connected by a first pipeline, the second cooling oil outlet and the first cooling oil inlet are connected by a second pipeline, and a pump is installed in the second pipeline. The refrigerant pipe is connected to the refrigerator, the refrigerant pipe is extended and introduced into the second heat exchange box, and is immersed in the cooling oil. In this system, the refrigerator circulates the refrigerant through the refrigerant pipes, and after the refrigerant has cooled, it exchanges heat with the cooling oil in the second heat exchange box via the refrigerant pipes. The cooled cooling oil is then pumped up by the pump and introduced into the first heat exchange box via the second pipeline, where it exchanges heat with the heating element. After absorbing heat and its temperature rises, the cooling oil is returned to the second heat exchange box through the first pipeline, where it undergoes another heat exchange and cools down, thus completing the circulating operation. In this system, the cooling oil is non-conductive, the first heat exchange box is cylindrical, and the first cooling oil inlet is A sealed-type cooling oil immersion cooling system that does not require heat dissipation fins, characterized in that the axis of the cooling oil is aligned along the tangential direction of the arc-shaped side wall, the first cooling oil outlet is formed in a direction perpendicular to the axis of the arc-shaped side wall, a main shaft hole is formed at the center of the cylindrical circle, the first heat exchange box is used to house the generator of a magnetic levitation generator, the coil of the generator is completely immersed in the cooling oil in the first heat exchange box, the main shaft of the generator is inserted through the main shaft hole, and the first heat exchange box is rectangular and is used to house a circuit board on which chips are arranged.

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