A sealed oil-immersed cooling system that does not require 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 oil-immersed cooling system that does not require heat dissipation fins. [Background technology]

[0002] "Heat dissipation" has become a frequently discussed topic in the current era of Industry 4.0 and information technology, because any mechanical equipment or device generates heat, and if that heat cannot be dissipated in a timely and effective manner, it will affect work efficiency and may even lead to work stoppages.

[0003] Taking wind turbines as an example, a wind turbine is installed in a location with sufficient wind power, and the main shaft of the wind turbine's fan blades is connected to the generator via a gear mechanism. When the fan blades rotate in response to the wind, the gear mechanism drives the generator to generate electricity. In the process of converting wind power into mechanical power and then converting the mechanical power into electricity, a certain amount of mechanical energy is lost due to friction between the gear mechanism and other components, reducing the efficiency of wind power generation. For this reason, the inventor of the present application previously filed in Republic of China Patent No. I800422 provides a magnetic levitation generator assembly, which comprises a main shaft installed within a housing, the upper and lower ends of which are supported in a floating state by magnetic levitation support seats, and the sides of the main shaft are supported by magnetic levitation bearings, the main shaft further comprises at least one turntable which serves as the rotor of the generator, a plurality of induction magnets are arranged around the turntable, a plurality of coils are fixed to the housing around the main shaft as stators 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 motor which serves as a power source, the fan unit or motor uses power to drive and rotate the main shaft, thereby rotating the turntable, and the induction magnets rotate relative to the coils to generate induced currents, the main shaft is supported by a magnetic levitation method, and resistance to the rotation of the main shaft is minimized, thereby achieving high power output efficiency.

[0004] Although magnetic levitation wind turbines are considered to be green energy devices with high power generation efficiency, they still suffer from the problem of heat generation from the coils during operation of the internal generator. To overcome this problem, conventionally, multiple heat dissipation fins are formed on the generator housing, which increases the heat absorption and dissipation area of ​​the housing, and air cooling is used in combination to remove heat. However, this heat dissipation method, which combines heat dissipation fins and air cooling, can no longer meet the needs of high-power equipment.

[0005] Furthermore, in an era where AI computing power is increasing dramatically, more advanced chips generate more heat during operation, making traditional cooling methods no longer sufficient. For this reason, liquid cooling technology has recently been developed. Conventional liquid cooling technology involves immersing a heat-generating element in a non-conductive coolant in a container, with a refrigeration system installed above the coolant. When the heat-generating element generates heat, the low-boiling-point coolant evaporates, and the evaporated vapor is condensed through a refrigeration pipe and returned in liquid form, creating a circulating system. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Republic of China Patent No. I800422 Specification Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to provide a sealed cooling oil immersion type 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 according to claim 1, which does not require a heat dissipation fin, includes a first heat exchange box, a second heat exchange box, and a refrigerator, the first heat exchange box is used to accommodate a heat generating element and has a first cooling oil inlet and a first cooling oil outlet; the second heat exchange box is used to store cooling oil, and has 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 pipe, the second cooling oil outlet and the first cooling oil inlet are connected by a second pipe, and a pump is installed in the second pipe; a refrigerant pipe connected to the refrigerator, the refrigerant pipe extended into the second heat exchange box, and immersed in the cooling oil; The refrigerator circulates the refrigerant through the refrigerant pipe, and the refrigerant after cooling exchanges heat with the cooling oil in the second heat exchange box through the refrigerant pipe. The cooled cooling oil is pumped up by the pump and introduced into the first heat exchange box through the second pipe, where it exchanges heat with the heating element, absorbs heat, and the temperature of the cooled oil increases. The cooled oil is then returned to the second heat exchange box through the first pipe, where it exchanges heat again and cools down, thereby performing a circulating operation. 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 with its axis along the tangential direction of the arc-shaped side wall, and the first cooling oil outlet formed with its axis perpendicular to the arc-shaped side wall, with a main shaft hole formed in the center of the cylinder, the first heat exchange box is used to accommodate a generator of a magnetic levitation generator, and the coil of the generator is completely immersed in the cooling oil in the first heat exchange box, and the main shaft of the generator is inserted into the main shaft hole, the first heat exchange box is rectangular and is used to accommodate a circuit board on which a chip is arranged. [Effects of the Invention]

[0009] Preferably, the cooling oil is a non-conductive cooling liquid, so that generator coils, circuit boards on which electronic components and circuits are arranged, etc. can be immersed in it without being damaged.

[0010] In one embodiment of the present invention, the first heat exchange box may be cylindrical, and the first cooling oil inlet is formed with its axis tangent to the arc-shaped side wall, so that when the cooling oil flows into the first heat exchange box, it flows along the circumference of the cylinder and returns to the second heat exchange box after fully absorbing the heat generated by the heating element.

[0011] In one embodiment of the present invention, the first cooling oil outlet can be formed so that its axis is perpendicular to the arc-shaped side wall, thereby allowing the cooling oil to flow along the cylindrical circumference of the first heat exchange box and then flow out with a slight delay, thereby being able to sufficiently absorb the heat generated by the heating 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, so that the first heat exchange box can be used to accommodate the generator of a magnetic levitation generator, and the coil of the generator can be completely immersed in the cooling oil in the first heat exchange box, and the main shaft of the generator can be inserted into the main shaft hole.

[0013] In one embodiment of the present invention, the first heat exchange box may be a rectangular body and is used to accommodate a circuit board on which a chip is arranged.

[0014] The present invention has the advantage that the cooling system described above prevents oil gas from leaking to the outside and provides a high cooling effect for the cooling oil circulating inside. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a plan view of a cooling system of the present invention. [Figure 2]2 is a plan cross-sectional view taken along the II-II direction in FIG. 1, showing the structure when the first heat exchange box is cylindrical. FIG. [Figure 3] FIG. 1 is a plan view showing an embodiment in which a cylindrical first heat exchange box of the present invention is attached to a magnetic levitation wind power generator. [Figure 4] 1 is a plan view showing an embodiment in which a circuit board of the present invention is immersed in a rectangular first heat exchange box. DETAILED DESCRIPTION OF THE INVENTION

[0016] As shown in Figure 1, the sealed cooling oil immersion cooling system of the present invention, which does not require heat dissipation fins, includes a first heat exchange box 1, a second heat exchange box 2, and a refrigerator 3. The first heat exchange box 1 has an interior space 13 used as a container for accommodating 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 accommodating cooling oil 5 and has 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 disposed outside the second heat exchanger 2, and a refrigerant pipe 31 is connected to the refrigerator 3, and the refrigerant pipe 31 extends into the second heat exchanger 2 and is immersed in the cooling oil 5. More specifically, the refrigerator 3 causes a low-temperature refrigerant to flow and circulate continuously through the refrigerant pipe 31 immersed in the cooling oil 5 through a refrigeration circuit. 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 can be configured with a suitable first heat exchange box 1 for different applications. For example, when applied to a magnetic levitation wind turbine, the first heat exchange box 1 is formed in a cylindrical shape (see FIG. 2), with a first cooling oil inlet 11 formed with its axis tangent to the arc-shaped side wall, a first cooling oil outlet 12 formed with its axis perpendicular to the arc-shaped side wall, and a main shaft hole 14 formed in the center of the cylinder.

[0018] 3, in this magnetic levitation wind turbine, a lower magnetic levitation support base 71A is installed on the bottom surface of the interior space of the housing, an upper magnetic levitation support base 71B is installed on the top surface, a first magnetic levitation bearing 72A and a second magnetic levitation bearing 72B are installed vertically within the interior space, a main shaft S is vertically disposed 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 connected to the upper magnetic levitation support base 71B and the lower magnetic levitation support base 71A, respectively, and the upper end of the main shaft S extends outside the housing and is further connected to the fan blades via a transmission mechanism such as gears. 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 serving as a stator and a first rotating disk 61A and a second rotating disk 61B serving as rotors. The plurality of coils 63 are fixedly installed in the housing along the periphery of the main shaft S and 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 arranged circumferentially on the first rotating disk 61A and the second rotating disk 61B, respectively. When the first induction magnet 62A and the second induction magnet 6B rotate relative to the coils 63, an induced current is generated, and this current is output via the power transmission cable. When the fan blades are in operation, the main shaft S is driven to rotate through the transmission mechanism, which in turn rotates the first rotating disk 61A and the second rotating disk 61B of the generator 6, generating power.

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

[0020] When the generator 6 is operating, the coil 63 generates heat. When the cooling system of the present invention is activated, the refrigerator 3 operates, circulating the refrigerant through the refrigerant pipe 31. The cooled refrigerant exchanges heat with the refrigerant pipe 31 and the cooling oil 5 in the second heat exchange box 2. 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 pipe 24, where it exchanges heat with the generator 6 to absorb heat. The cooled cooling oil 5 in the first heat exchange box 1 is then returned to the second heat exchange box 2 via the first pipe 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 generator 6, completing the circulation operation. This allows for efficient heat reduction in the generator, eliminating the need for a combination of radiator fins and air for cooling.

[0021] As shown in Figure 4, when high-end chips generate a large amount of heat, the conventional air-cooling method of heat dissipation cannot meet the demands, so multiple circuit boards 8 with chips 81 mounted on them are placed inside a rectangular first heat exchange box 1A, and power lines are connected to the circuit boards 8, which are then placed inside the first heat exchange box 1A and conductively connected to an external controller 9 to control the circuit operation. Non-conductive cooling oil 5 is then poured into the first heat exchange box 1A and the second heat exchange box 2, and the circuit boards 8 with chips 81 mounted on them are immersed in the cooling oil 5 inside the first heat exchange box 1A. When the refrigerator 3 is started and operated, and the refrigerant is circulated within the refrigerant pipe 31, the cooled refrigerant exchanges heat with the refrigerant pipe 31 and the cooling oil 5 in the second heat exchange box 2. 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 pipe 24, where it exchanges heat with the chips 81 or other heat-generating elements on the circuit board 8 to absorb heat. After the temperature of the cooling oil 5 in the first heat exchange box 1 rises, it is returned to the second heat exchange box 2 via the first pipe 23, where it again exchanges heat with the refrigerant pipe 31 to lower its temperature. The cooled cooling oil 5 is then transported back to the first heat exchange box 1, where it exchanges heat with the chips 81 or other heat-generating elements, thereby completing the circulation operation.

[0022] The present invention has the advantage that the above-mentioned 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 a high cooling effect for the cooling oil circulating internally. [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. Freezer 31 Refrigerant pipe 4. Pump 5 Cooling oil 6. Generator 61A First Turntable 61B 2nd Turntable 62A First induction magnet 62B Second induction magnet 63 Coil 71A Lower magnetic levitation support seat 71B Upper magnetic levitation support base 72A First magnetic levitation bearing 72B Second magnetic levitation bearing 8 circuit board 81 chips 9 Controller S spindle

Claims

[Claim 1] A sealed oil-immersed 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 accommodate a heat generating element and has a first cooling oil inlet and a first cooling oil outlet; the second heat exchange box is used to store cooling oil, and has 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 pipe, the second cooling oil outlet and the first cooling oil inlet are connected by a second pipe, and a pump is installed in the second pipe; a refrigerant pipe connected to the refrigerator, the refrigerant pipe extended into the second heat exchange box, and immersed in the cooling oil; The refrigerator circulates the refrigerant through the refrigerant pipe, and the cooled refrigerant exchanges heat with the cooling oil in the second heat exchange box through the refrigerant pipe. The cooled cooling oil is pumped up by the pump and introduced into the first heat exchange box through the second pipe, where it exchanges heat with the heating element, absorbs heat, and the temperature of the cooled oil increases. The cooled cooling oil is then returned to the second heat exchange box through the first pipe, where it exchanges heat again and is cooled, thereby performing a circulating operation. The cooling oil is non-conductive, and the first heat exchange box is cylindrical. The first cooling oil inlet a first cooling oil outlet formed in the cylindrical center with its axis aligned tangentially to the arc-shaped side wall, the first cooling oil outlet formed in the cylindrical center with its axis aligned perpendicular to the arc-shaped side wall, a main shaft hole formed in the cylindrical center, the first heat exchange box used to house a generator of a magnetic levitation generator, the coil of the generator being completely immersed in the cooling oil in the first heat exchange box, and the main shaft of the generator being inserted into the main shaft hole, the first heat exchange box being rectangular and used to house a circuit board on which chips are arranged.

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