Air-in-water jacket base with high heat dissipation rate

Abstract

The invention discloses a high heat dissipation rate air-in-water jacket base, relates to the technical field of motor thermal management, and provides the following scheme for solving the problems of low heat dissipation efficiency, non-uniform temperature distribution, poor structural stability and low adaptability of an existing base in the prior art: the high heat dissipation rate air-in-water jacket base comprises a shell, and the annular inner wall of the shell is connected with an inner water cylinder; the annular inner wall of the inner water barrel is connected with an outer water barrel, and an air outlet and an air inlet which are symmetrically distributed are formed in the two ends of the annular outer wall of the shell correspondingly. The heat dissipation efficiency is high, the temperature distribution is uniform, the problems of low heat dissipation and non-uniform temperature of a traditional base are solved through the composite heat dissipation structure and the optimized water channel design, the main and auxiliary spiral water channel ribs are matched, the water-cooling contact area is increased, the water flow retention time is prolonged, and the water-cooling heat dissipation power is improved; the trapezoidal ventilation fins and symmetrical wind paths are designed, so that the air cooling heat dissipation coefficient is improved, the local temperature difference of the motor is reduced, the demagnetization rate is reduced, the insulation life is prolonged, and the heat dissipation requirement of the high-power-density motor is met.

Description

Technical Field

[0001] This invention relates to the field of motor thermal management technology, and in particular to a high heat dissipation rate air-cooled water jacket base. Background Technology

[0002] The high-heat-dissipation-rate air-cooled water-jacketed motor frame is a core heat dissipation component for high-power-density motors. Its core function is to utilize a "air-cooled water-jacketed" composite structure—an outer air-cooling channel enveloping an inner water-cooling cavity—while simultaneously employing spiral water channels to increase the water-cooling contact area and ventilation fins to enhance air-cooling efficiency. This forms a coordinated air-water cooling system, rapidly dissipating the heat generated during motor operation, controlling the internal temperature of the motor, and ensuring motor performance and lifespan. This equipment is widely used in new energy vehicle drive motors, industrial high-speed spindle motors, and marine propulsion motors, and is a key piece of equipment for improving the reliability of high-power-density motors.

[0003] However, the existing air-jacket water jacket base has obvious shortcomings in actual use.

[0004] On the one hand, the heat dissipation efficiency is low and the temperature distribution is uneven. The water cooling structure of traditional bases is mostly a single spiral water channel, which has a limited heat dissipation contact area, resulting in low water cooling efficiency. On the other hand, the air cooling channel is only designed with simple ventilation holes, and the airflow does not make sufficient contact with the base. The motor is prone to local overheating, and long-term operation can easily cause permanent magnet demagnetization and insulation aging.

[0005] On the other hand, the structure is unstable and has low adaptability. The inner and outer water tanks of the traditional base are mostly fixed by welding. Long-term alternating hot and cold operation can easily cause the weld to crack, resulting in coolant leakage. The ventilation fins are mostly straight-blade designs, which have low strength and are only suitable for fans with specific speeds. When the motor speed changes, the air cooling efficiency fluctuates greatly and cannot meet the needs of multi-condition use. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a high heat dissipation rate air-jacketed water jacket base, which overcomes the deficiencies of existing technologies and effectively solves the problems of low heat dissipation efficiency, uneven temperature distribution, poor structural stability, and low adaptability of existing bases.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A high heat dissipation rate air-jacket water jacket base includes an outer shell. An inner water cylinder is connected to the annular inner wall of the outer shell, and an outer water cylinder is connected to the annular inner wall of the inner water cylinder. Symmetrically distributed air outlets and air inlets are respectively opened at both ends of the annular outer wall of the outer shell, and both air outlets and air inlets are interconnected with the annular outer wall of the outer water cylinder. Water outlets and water inlets are respectively opened at both ends of the annular outer walls of the outer shell and the outer water cylinder, and fixed pipes are inserted and fixed at the water outlets and water inlets. The end of the fixed pipe away from the outside is located between the inner water cylinder and the outer water cylinder, and a spiral water channel is provided between the inner water cylinder and the outer water cylinder. The spiral water channel includes a main spiral water channel rib and an auxiliary spiral water channel rib. Ventilation fins are connected to the annular outer wall of the outer water cylinder at equal intervals.

[0008] Preferably, side plates are fixed to both sides of the annular outer wall of the outer shell, and a mounting base is fixed to one side of the annular outer wall of the outer shell.

[0009] The side plate is made of Q235 steel and is fixed to the outer shell by full welding. The weld leg height is 8mm. The weld is defect-free after flaw detection. The center of the side plate has a bearing hole that matches the motor shaft. The inner wall of the bearing hole is precision ground. The mounting base is an L-shaped structure with a total of 4, which are evenly distributed along the circumference of the outer shell. The mounting base has M16 bolt holes to facilitate the fixing of the base and the motor base. The bolt tightening torque is 50-60 N·m.

[0010] Preferably, the outer shell is made of Q355 steel with a thickness of 8mm. The annular inner wall of the outer shell and the annular outer wall of the inner water cylinder are fixed by an interference fit with an interference amount of 0.02-0.03mm. The inner wall of the outer shell is coated with anti-rust paint and is resistant to salt spray corrosion for ≥500 hours.

[0011] The outer shell surface is sandblasted to enhance heat exchange with the air; the inner water cylinder is heated before interference fit and installed using a heat fitting process. After cooling, a firm connection is formed to prevent leakage of the water cooling cavity.

[0012] Preferably, both the inner and outer water cylinders are made of 304 stainless steel, with the inner water cylinder having a wall thickness of 6mm and the outer water cylinder having a wall thickness of 8mm. The coaxiality between the inner and outer water cylinders is ≤0.05mm, and the distance between them is 20-30mm, forming a space for the spiral water channel.

[0013] The inner and outer water cylinders are fixed by welding with the main spiral water channel ribs. The welding is done with argon arc welding, and the weld is smooth and burr-free to ensure smooth water flow. Both ends of the two cylinders are machined with sealing grooves, and nitrile rubber sealing rings are installed in the grooves to prevent coolant from leaking from the ends.

[0014] Preferably, the height of the main spiral water channel rib is consistent with the spacing between the inner and outer water cylinders, and the thickness of the main spiral water channel rib is 8mm. There are 3-4 equidistant main spiral water channel ribs distributed along the circumference. The height of the auxiliary spiral water channel rib is 1 / 2 of that of the main spiral water channel rib, and the thickness is 4mm. There are 2-3 auxiliary spiral water channel ribs between each main spiral water channel rib.

[0015] The main spiral water channel ribs serve as both water flow channel dividers and support for the inner and outer water cylinders, preventing deformation caused by water pressure. The auxiliary spiral water channel ribs increase the water flow contact area and guide the water flow to form a spiral flow, extending the heat exchange time and improving heat dissipation efficiency.

[0016] Preferably, both the air outlet and the air inlet are rectangular structures, and the air outlet and the air inlet are symmetrically distributed along the axis of the outer shell. Both are welded with protective mesh on their inner sides to prevent foreign objects from entering the air-cooling channel.

[0017] The edges of the air outlet and air inlet are rounded to reduce airflow resistance; the protective net is welded to the outer shell with a weld spacing of 10mm to ensure strength and prevent the protective net from falling off due to high-speed airflow.

[0018] Preferably, the fixing pipe is made of seamless steel pipe, and the fixing pipe is connected to the water outlet and water inlet by thread. The thread is wrapped with PTFE tape, and the sealing performance meets the GB / T13402 standard and there is no leakage.

[0019] The end of the fixed pipe that extends between the inner and outer water cylinders is machined with a 45° bevel to facilitate the rapid entry of water into the spiral water channel and reduce the generation of eddies; the fixed pipe is fitted with an insulation sleeve to prevent condensation on the outer wall due to excessively low coolant temperature.

[0020] Preferably, the ventilation fins are trapezoidal in shape and are evenly distributed along the circumference of the outer water cylinder with a spacing of 10 mm. The ventilation fins are fixed to the outer water cylinder by brazing at a temperature of 800-850℃ and a bonding strength of ≥150MPa.

[0021] The trapezoidal structure enhances fin strength and prevents vibration-induced breakage; the fin surface undergoes pickling and passivation treatment to improve corrosion resistance and increase the contact area with air, thereby increasing the air-cooling heat dissipation coefficient to 35W / (m²). 2 ·K) and above.

[0022] Preferably, the spiral helix angle of the spiral channel is 15-20°, and the flow velocity of the water in the spiral channel is 1.5-2m / s. The inner wall of the spiral channel is polished to reduce water flow resistance.

[0023] The spiral angle design ensures that the water flow makes full contact with the waterway wall, while avoiding excessive pressure loss due to excessive flow rate; the polished inner wall reduces scale buildup, making it easier to clean and maintain later, and ensuring stable heat dissipation efficiency over a long period of time.

[0024] The beneficial effects of this invention are as follows: With high heat dissipation efficiency and uniform temperature distribution, it solves the problems of low heat dissipation and uneven temperature in traditional motor bases through a composite heat dissipation structure and optimized water channel design. The main and auxiliary spiral water channel ribs work together to increase the water cooling contact area, extend the water flow residence time, and improve the water cooling power. The trapezoidal ventilation fins and symmetrical air path design improve the air cooling coefficient, reduce the local temperature difference of the motor, reduce the demagnetization rate, and extend the insulation life, meeting the heat dissipation requirements of high power density motors. With a stable structure and strong adaptability, relying on high-strength connections and flexible design, it improves the poor stability and low adaptability of traditional bases. The interference fit and welding of the inner and outer water cylinders double fixation reduces the weld cracking rate and vibration fracture rate. The mounting base and customizable bearing hole design can adapt to permanent magnet synchronous motors and high-speed motors with a certain power range, expanding the fan speed adaptation range and improving adaptability compared to traditional bases, meeting the needs of multiple working conditions. Attached Figure Description

[0025] Figure 1 This is a side sectional view of the overall structure of a high heat dissipation rate air-jacket water jacket base proposed in this invention; Figure 2 This is a cross-sectional schematic diagram of the overall structure of a high heat dissipation rate air-jacket water jacket base proposed in this invention; Figure 3 This is a schematic diagram of the structure between the inner and outer water cylinders of a high heat dissipation rate air-cooled water jacket base proposed in this invention. Figure 4 This is a schematic diagram of a spiral water channel structure for a high heat dissipation rate air-jacket water jacket base proposed in this invention; Figure 5 This is a schematic diagram of the external water cylinder structure of a high heat dissipation rate air-jacket water jacket base proposed in this invention.

[0026] In the diagram: 1. Outer shell; 2. Side panel; 3. Air outlet; 4. Inner water tank; 5. Outer water tank; 6. Air inlet; 7. Water outlet; 8. Water inlet; 9. Mounting base; 10. Spiral water channel; 11. Main spiral water channel rib; 12. Auxiliary spiral water channel rib; 13. Ventilation fins. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example: Reference Figure 1-5A high heat dissipation rate air-jacket water jacket base includes an outer shell 1. An inner water cylinder 4 is connected to the annular inner wall of the outer shell 1, and an outer water cylinder 5 is connected to the annular inner wall of the inner water cylinder 4. The two ends of the annular outer wall of the outer shell 1 are respectively provided with symmetrically distributed air outlets 3 and air inlets 6. Both air outlets 3 and air inlets 6 are interconnected with the annular outer wall of the outer water cylinder 5. Both ends of the annular outer walls of the outer shell 1 and the outer water cylinder 5 are respectively provided with water outlets 7 and water inlets 8. Fixed pipes are inserted and fixed at water outlets 7 and water inlets 8. The end of the fixed pipe away from the outside is located between the inner water cylinder 4 and the outer water cylinder 5. A spiral water channel 10 is provided between the inner water cylinder 4 and the outer water cylinder 5. The spiral water channel 10 includes a main spiral water channel rib 11 and an auxiliary spiral water channel rib 12. The annular outer wall of the outer water cylinder 5 is connected with equidistantly distributed ventilation fins 13.

[0029] Side plates 2 are fixed to both sides of the annular outer wall of the outer shell 1. A mounting base 9 is fixed to one side of the annular outer wall of the outer shell 1. The side plates 2 are made of Q235 steel and are fixed to the outer shell 1 by full welding. The weld leg height is 8mm, and the weld is defect-free after flaw detection. A bearing hole adapted to the motor shaft is opened in the center of the side plate 2, and the inner wall of the bearing hole is precision ground. The mounting base 9 has an L-shaped structure, with a total of 4, evenly distributed along the circumference of the outer shell 1. The mounting base 9 has M16 bolt holes for easy fixing of the base and the motor base. The bolt tightening torque is 50-60 N·m. The outer shell 1 is made of Q355 steel with a thickness of 8mm. The annular inner wall of the outer shell 1 and the inner water cylinder 4 are connected. The outer wall of the shell is fixed by interference fit with an interference amount of 0.02-0.03mm. The inner wall of the shell 1 is coated with anti-rust paint and is resistant to salt spray corrosion for ≥500 hours. The surface of the shell 1 is sandblasted to enhance heat exchange with the air. The inner water cylinder 4 is heated before interference fit and installed using a heat fitting process. After cooling, a firm connection is formed to prevent leakage of the water cooling cavity. Both the inner water cylinder 4 and the outer water cylinder 5 are made of 304 stainless steel. The wall thickness of the inner water cylinder 4 is 6mm and the wall thickness of the outer water cylinder 5 is 8mm. The coaxiality of the inner water cylinder 4 and the outer water cylinder 5 is ≤0.05mm. The distance between them is 20-30mm, forming the accommodating space of the spiral water channel 10.

[0030] The inner water cylinder 4 and the outer water cylinder 5 are fixed by welding with main spiral water channel ribs 11. Argon arc welding is used at the weld, resulting in a smooth, burr-free weld to ensure smooth water flow. Both ends of the inner and outer water cylinders have sealing grooves with nitrile rubber sealing rings installed inside to prevent coolant leakage. The height of the main spiral water channel ribs 11 is consistent with the spacing between the inner and outer water cylinders 4 and 5. The thickness of the main spiral water channel ribs 11 is 8mm, and 3-4 ribs are evenly distributed along the circumference. The height of the auxiliary spiral water channel ribs 12 is half that of the main spiral water channel ribs 11, and the thickness is 4mm. 2-3 auxiliary spiral water channel ribs 12 are placed between each main spiral water channel rib 11. 11 serves as both a water flow channel divider and a support for the inner water cylinder 4 and outer water cylinder 5, preventing deformation caused by water pressure. The auxiliary spiral water channel rib 12 increases the water flow contact area and guides the water flow to form a spiral flow, extending the heat exchange time and improving heat dissipation efficiency. Both the air outlet 3 and the air inlet 6 are rectangular structures, symmetrically distributed along the axis of the outer shell 1. Protective nets are welded to the inner side of both to prevent foreign objects from entering the air-cooling channel. The edges of the air outlet 3 and the air inlet 6 are rounded to reduce airflow resistance. The protective nets are welded to the outer shell 1 with a weld spacing of 10mm to ensure strength and prevent the protective nets from falling off due to high-speed airflow.

[0031] The fixed pipe is made of seamless steel pipe. It is connected to the outlet 7 and inlet 8 via threads, with PTFE tape wrapped around the threads to ensure a leak-free seal meeting GB / T13402 standards. One end of the fixed pipe, extending between the inner water cylinder 4 and the outer water cylinder 5, is machined at a 45° bevel to facilitate rapid water flow into the spiral water channel 10 and reduce eddy currents. An insulation sleeve is fitted over the fixed pipe to prevent condensation on the outer wall due to low coolant temperature. The ventilation fins 13 are trapezoidal in structure and are evenly distributed along the circumference of the outer water cylinder 5 at 10mm intervals. The ventilation fins 13 are fixed to the outer water cylinder 5 by brazing at a temperature of 800-850℃, achieving a bond strength ≥150MPa. The trapezoidal structure enhances fin strength and prevents vibration-induced breakage. The fin surface undergoes pickling and passivation treatment to improve corrosion resistance and increase the contact area with air, increasing the air-cooling heat dissipation coefficient to 35W / (m²). 2 ·K) and above, the spiral rise angle of the spiral water channel 10 is 15-20°, the flow velocity of the water in the spiral water channel 10 is 1.5-2m / s, the inner wall of the spiral water channel 10 is polished to reduce water flow resistance, the spiral rise angle design ensures that the water flow is in full contact with the water channel wall, while avoiding excessive pressure loss due to excessive flow velocity; the polished inner wall reduces scale adhesion, facilitates later cleaning and maintenance, and ensures stable heat dissipation efficiency over a long period of time.

[0032] Core cylindrical structure processing and assembly: The inner water cylinder 4 and the outer water cylinder 5 are made of seamless 304 stainless steel tubes. The outer and inner walls are precision machined by CNC lathe to ensure coaxiality ≤0.05mm. The main spiral water channel rib 11 and the auxiliary spiral water channel rib 12 are formed by laser cutting and welded to the inner water cylinder 4 and the outer water cylinder 5 by argon arc welding. After welding, a water pressure test is performed. The inner water cylinder 4 is heated to 150℃ and fitted into the outer shell 1 using a heat fitting process. After cooling, the interference fit quality is checked to ensure no gaps. Sealing rings are installed in the sealing grooves at both ends of the inner and outer water cylinders to complete the water cooling cavity assembly.

[0033] Airflow and fin installation: The ventilation fins 13 are fixed to the annular outer wall of the outer water cylinder 5 by brazing. Before brazing, the oil and oxide scale on the surface of the fins and the outer water cylinder are cleaned. Nitrogen-protected brazing process is used to avoid high-temperature oxidation. After the fins are installed, the flatness is checked to ensure smooth airflow. Air outlets 3 and air inlets 6 are processed at both ends of the outer shell 1. After rounding the edges, protective nets are welded. The distance between the weld points of the protective net and the outer shell 1 is 10mm to ensure firmness. Check the airflow channel and the space between the outer shell 1, the inner water cylinder 4, the outer water cylinder 5 and the fins to ensure that there is no blockage and the airflow resistance is ≤50Pa.

[0034] Interface and fixing component installation: Threaded holes are machined at the outlet 7 and inlet 8 of the outer shell 1 and the outer water cylinder 5. After the fixing pipe is wrapped with PTFE tape, it is connected to the threaded holes and tightened to a torque of 30-35 N·m. After connection, an airtightness test is performed. The fixing pipe is fitted with an insulation sleeve and fixed with cable ties. Side plates 2 are welded on both sides of the outer shell 1. Symmetrical welding process is used to reduce deformation. Bearing holes are machined in the center of the side plates 2 and finely ground to a roughness Ra≤0.8μm using a honing machine. Mounting seat 9 is welded to the outer wall of the outer shell 1. The perpendicularity deviation between the mounting seat 9 and the outer shell 1 is ≤0.5mm / m to ensure that the base is installed flat.

[0035] Overall inspection and debugging: After assembly, the overall dimensions are inspected to ensure they meet the design requirements; heat dissipation performance is tested by connecting the base to a simulated heat source, introducing 30°C cooling water, starting the fan, and monitoring the temperature at various points on the base. The heat dissipation power is ≥45kW, meeting the design specifications; vibration is tested to check that all components are secure, there is no abnormal noise, and the ventilation fins are not broken, ensuring structural stability.

[0036] Working principle: Air-water coordinated heat dissipation process: When the motor is running, the heat generated by the stator and rotor is transferred to the inner wall of the inner water cylinder 4 through heat conduction. The inner water cylinder 4 transfers the heat to the coolant in the spiral water channel 10, which is usually deionized water or antifreeze. The coolant flows in from the fixed pipe of the inlet 8 and is guided into the spiral water channel 10 through the inclined port. Under the guidance of the main spiral water channel rib 11 and the auxiliary spiral water channel rib 12, a spiral flow is formed, which fully contacts the walls of the inner water cylinder 4 and the outer water cylinder 5. After absorbing heat, it flows out from the outlet 7, completing the water cooling cycle.

[0037] Enhanced heat dissipation process with air cooling: Simultaneously, the fan on the motor shaft rotates synchronously with the shaft, drawing cold air into the air duct from the air inlet 6 into the space between the outer shell 1, the inner water cylinder 4, and the outer water cylinder 5. When the cold air flows through the ventilation fins 13 on the outer wall of the outer water cylinder 5, it comes into full contact with the fin surface and absorbs the heat transferred from the outer water cylinder 5. Part of the heat comes from the residual heat after water cooling, and part comes from the heat dissipation of the motor shell. The heated air is discharged from the air outlet 3. Part of the discharged hot air can be recirculated through the motor rotor ventilation duct and air gap, further carrying away the rotor heat, forming a three-dimensional heat dissipation path coupling of air-water-rotor.

[0038] Temperature control and structural protection mechanisms: The design of the main and auxiliary spiral water channel ribs 11 and 12 not only increases the water cooling contact area, but also extends the heat exchange time of the coolant through spiral flow, ensuring uniform temperature of the inner wall of the inner water cylinder 4. The large contact area and high strength of the trapezoidal ventilation fins 13 not only improve the air cooling efficiency, but also avoid the risk of vibration breakage. The sealing and bearing hole design of the side plate 2 ensures stable rotation of the motor shaft, while preventing external dust and moisture from entering the motor. The firm fixing of the mounting base 9 ensures that the base does not shake when the motor is running, ensuring long-term stable operation of the heat dissipation structure, and ultimately achieving overall motor temperature control within a safe range, avoiding demagnetization of permanent magnets and insulation aging.

[0039] Multi-condition adaptation adjustment: When the motor power or speed changes, the cooling requirements can be adapted by adjusting the coolant flow rate and fan specifications. For example, when the motor is running at high power, the coolant flow rate can be increased to 8m³ / h. 3 / h, improve water cooling heat dissipation; when the motor is running at high speed, replace with a large diameter fan to increase air cooling airflow and ensure that the heat dissipation efficiency always matches the heat generated by the motor, so as to meet the stable operation under multiple working conditions.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high heat dissipation rate air-bag water jacket base frame comprising a housing (1), characterized in that, The annular inner wall of the shell (1) is connected with an inner water cylinder (4), and the annular inner wall of the inner water cylinder (4) is connected with an outer water cylinder (5), the two ends of the annular outer wall of the shell (1) are respectively provided with symmetrically distributed air outlets (3) and air inlets (6), and the air outlets (3) and the air inlets (6) are in communication with the annular outer wall of the outer water cylinder (5), the two ends of the annular outer wall of the shell (1) and the outer water cylinder (5) are respectively provided with water outlets (7) and water inlets (8), and the water outlets (7) and the water inlets (8) are respectively connected with fixed pipes, the end of the fixed pipe away from the outside is located between the inner water cylinder (4) and the outer water cylinder (5), and a spiral water channel (10) is arranged between the inner water cylinder (4) and the outer water cylinder (5), the spiral water channel (10) comprises a main spiral water channel rib (11) and an auxiliary spiral water channel rib (12), and the annular outer wall of the outer water cylinder (5) is connected with equally spaced ventilation fins (13).

2. A high heat dissipation rate air-bundle water jacketed pedestal according to claim 1, wherein, The two sides of the annular outer wall of the shell (1) are respectively fixed with side plates (2), and one side of the annular outer wall of the shell (1) is fixed with a mounting seat (9).

3. The high heat dissipation rate air-to-water jacketed pedestal of claim 1, wherein, The shell (1) is made of Q355 steel material, and the thickness is 8mm, the annular inner wall of the shell (1) and the annular outer wall of the inner water cylinder (4) are fixed by interference fit, the interference amount is 0.02-0.03mm, the inner wall of the shell (1) is sprayed with rust-proof paint, and the salt mist corrosion resistance is greater than or equal to 500 hours.

4. The high heat dissipation rate air-to-water jacketed pedestal of claim 1, wherein, The inner water cylinder (4) and the outer water cylinder (5) are made of 304 stainless steel material, the wall thickness of the inner water cylinder (4) is 6mm, the wall thickness of the outer water cylinder (5) is 8mm, the coaxiality of the inner water cylinder (4) and the outer water cylinder (5) is less than or equal to 0.05mm, and the spacing between the two is 20-30mm, forming a containing space of the spiral water channel (10).

5. The high heat dissipation rate air-to-water jacketed pedestal of claim 1, wherein, The height of the main spiral water channel rib (11) is consistent with the spacing between the inner water cylinder (4) and the outer water cylinder (5), and the thickness of the main spiral water channel rib (11) is 8mm, and 3-4 main spiral water channel ribs (11) are equally distributed along the circumferential direction, the height of the auxiliary spiral water channel rib (12) is 1 / 2 of the height of the main spiral water channel rib (11), and the thickness is 4mm, and 2-3 auxiliary spiral water channel ribs (12) are arranged between each main spiral water channel rib (11).

6. The high heat dissipation rate air-to-water jacketed pedestal of claim 1, wherein, The air outlet (3) and the air inlet (6) are both rectangular structures, and the air outlet (3) and the air inlet (6) are symmetrically distributed along the axis of the shell (1), and the inner sides of the two are both welded with protective nets to prevent foreign matters from entering the air cooling channel.

7. The high heat dissipation rate water jacketed pedestal of claim 1, wherein, The fixed pipe is made of seamless steel pipe, and the fixed pipe is connected with the water outlet (7) and the water inlet (8) through threads, the threads are wrapped with raw tape, the sealing performance meets the GB / T13402 standard, and there is no leakage.

8. The high heat dissipation rate water jacketed pedestal of claim 1, wherein, The ventilation fin (13) is a trapezoidal structure, and the ventilation fin (13) is equally spaced along the circumference of the outer water cylinder (5), and the spacing is 10mm, the ventilation fin (13) is fixed with the outer water cylinder (5) by brazing, the brazing temperature is 800-850℃, and the bonding strength is greater than or equal to 150MPa.

9. The high heat dissipation rate water jacketed pedestal of claim 1, wherein, The spiral angle of the spiral water channel (10) is 15-20°, and the flow rate of the water flow in the spiral water channel (10) is 1.5-2m / s, the inner wall of the spiral water channel (10) is polished to reduce the water flow resistance.

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