A new type of high pressure electronic fan for vehicle

Abstract

The utility model relates to the technical field of automobile thermal management accessories discloses a novel high -pressure electronic fan for car, including motor hub cover, fan blade and outer ring, fan blade has predetermined curvature, and including with motor hub cover connects first arc shape end and with the second arc shape end of outer ring inner wall connection, second arc shape end one end has the pointed end of extending to the direction of rotation. Through optimizing fan blade structure, make the airflow flow more smoothly at the fan blade surface and the fan blade and outer ring junction, reduce the vortex and airflow separation, reduce the operating resistance, significantly improve the fan airflow delivery efficiency and overall work efficiency, enhance the cooling system heat dissipation performance, reduce energy consumption simultaneously, improve the operation stability and reliability, prolong the life.

Description

Technical Field

[0001] This utility model relates to the field of automotive thermal management accessories technology, specifically to a novel high-voltage electronic fan for automobiles. Background Technology

[0002] In the commercial vehicle sector, electric fans, as a key component of the cooling system, play a crucial role in ensuring the normal operating temperature of core components such as the engine. With the continuous development of commercial vehicle technology, the performance requirements for fans are also increasing, especially in terms of efficiency. High-efficiency fans can effectively reduce energy consumption, improve the overall vehicle economy, and enhance cooling performance, ensuring stable vehicle operation under various conditions.

[0003] However, existing high-voltage electric fans for commercial vehicles have certain limitations in their structural design. Traditional fans have relatively simple blade structures, typically a single curved or straight shape, and the connection between the blades and the motor hub and outer ring is also conventional. This structure results in insufficient guidance and utilization of airflow during fan rotation, leading to significant energy loss and hindering further improvements in fan efficiency.

[0004] Specifically, when traditional fan blades are fitted with an outer ring, the unreasonable design of the blade tip shape easily leads to vortex formation and airflow separation at the connection point between the blade and the outer ring. This not only increases the fan's operating resistance but also reduces the effective airflow delivery efficiency, thus affecting the overall cooling system's heat dissipation performance. Furthermore, the curved end design of traditional fan blades often fails to fully consider the dynamic characteristics of airflow, resulting in insufficient smooth airflow across the blade surface, further limiting the improvement of fan efficiency.

[0005] Therefore, there is an urgent need for a new type of high-voltage electric fan for commercial vehicles that can solve the above problems and significantly improve efficiency. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a novel high-voltage electronic fan for vehicles.

[0007] The technical solution adopted by this utility model is: a novel high-voltage electronic fan for vehicles, including a motor hub, fan blades and an outer ring. The fan blades have a predetermined curvature. The fan blades include a first arc-shaped end connected to the motor hub and a second arc-shaped end connected to the inner wall of the outer ring. One end of the second arc-shaped end has a pointed tip extending in the direction of rotation.

[0008] Furthermore, one side of the tip has an inclined surface, and one side of the fan blade has a side curved surface, with the angle c between the line connecting the endpoints of the two ends of the side curved surface and the inclined surface being 110-125°.

[0009] Furthermore, the inclined surface and the side curved surface are connected by a circular arc transition.

[0010] Furthermore, the predetermined curvature of the fan blade gradually decreases from the first arc-shaped end to the second arc-shaped end.

[0011] Furthermore, the fan blade has a hook side and a back side, and the predetermined curvature of the fan blade gradually increases from the back side to the hook side.

[0012] Furthermore, the radius R1 of the fan blade located on the first arc-shaped end is 140-155mm, and the radius R2 of the fan blade located on the second arc-shaped end is 225-235mm.

[0013] Furthermore, the tilt angle α of the fan blade located on the first arc-shaped end is 25-35°, and the tilt angle b of the fan blade located on the second arc-shaped end is 20-30°.

[0014] Furthermore, the thickness of the fan blade is 1.5-2.5 mm.

[0015] Furthermore, the outer ring is provided with a windproof ring on its outer edge.

[0016] Furthermore, the inner wall of the motor hub is provided with a number of heat dissipation fins at intervals.

[0017] The beneficial effects of this utility model are: 1. Efficiency Improvement: This application optimizes the design of the fan blade structure, especially the combination of the first and second arc-shaped ends and the setting of the tip of the second arc-shaped end extending in the direction of rotation. This enables the airflow to flow more smoothly on the fan blade surface and at the connection between the fan blade and the outer ring, reducing eddies and airflow separation, lowering operating resistance, thereby significantly improving the airflow delivery efficiency and overall working efficiency of the fan, and effectively enhancing the heat dissipation performance of the cooling system.

[0018] 2. Reduced energy consumption: Due to the improved fan efficiency, less energy input is required to achieve the same cooling effect, thereby reducing the energy consumption of commercial vehicles and helping to improve the overall vehicle economy.

[0019] 3. Operational stability: The reasonable fan blade structure design makes the fan more evenly stressed during operation, reducing vibration and noise caused by factors such as airflow turbulence, improving the stability and reliability of fan operation, and extending the service life of the fan.

[0020] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0024] Figure 3 for Figure 2 A schematic diagram of the cross section of AA.

[0025] Figure 4 for Figure 2 A schematic diagram of the cross-section of BB.

[0026] Figure 5 A data simulation table for data.

[0027] Figure 1-5 In the middle: 1. Motor hub sleeve; 2. Fan blade; 3. Outer ring; 4. First arc end; 5. Second arc end; 6. Tip; 7. Sloping surface; 8. Side curved surface; 9. Angle c; 10. Arc transition; 11. Hook side; 12. Back side; 13. Wind deflector ring; 14. Cooling fan fins. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] This utility model provides a novel high-voltage electronic fan for vehicles.

[0031] In this embodiment, refer to Figure 1-5 The novel high-voltage electric fan for vehicles includes a motor hub 1, a fan blade 2, and an outer ring 3. The fan blade has a predetermined curvature and includes a first arc-shaped end 4 connected to the motor hub and a second arc-shaped end 5 connected to the inner wall of the outer ring. One end of the second arc-shaped end 5 has a pointed tip 6 extending in the direction of rotation.

[0032] In the above technical solution, the electronic fan consists of a motor hub, fan blades, and an outer ring with a predetermined curvature. The fan blades have a first arc-shaped end connected to the motor hub and a second arc-shaped end connected to the inner wall of the outer ring and having a pointed tip extending in the direction of rotation at one end.

[0033] By setting a second arc-shaped tip, the airflow on the fan blade surface and at the connection between the fan blade and the outer ring can be optimized, reducing eddies and airflow separation, lowering operating resistance, significantly improving the airflow delivery efficiency and overall working efficiency of the fan, and enhancing the heat dissipation performance of the cooling system.

[0034] The predetermined curvature in this application specifically refers to the fact that the fan blades have a certain curvature.

[0035] Specifically, one side of the tip has an inclined surface 7, and one side of the fan blade has a side curved surface 8. The angle c9 between the line connecting the endpoints of the two ends of the side curved surface and the inclined surface is 110-125°.

[0036] In this embodiment, a slope is provided on one side of the tip, and a side curved surface is provided on one side of the fan blade. The angle between the line connecting the two endpoints of the side curved surface and the slope is between 110° and 125°. This angle range further optimizes the airflow path at the tip and the side of the fan blade, allowing the airflow to flow more smoothly over the fan blade, reducing energy loss, improving the fan's efficiency in guiding and delivering airflow, and thus enhancing the cooling effect.

[0037] Specifically, the inclined surface and the side curved surface are connected by a circular arc transition 10.

[0038] In this embodiment, a circular arc transition is used between the inclined surface and the side curved surface. The circular arc transition can eliminate the sharp edges between the inclined surface and the side curved surface, avoid the generation of obvious vortices and separation in the airflow at this position, make the airflow smoother, reduce airflow resistance, improve the aerodynamic performance of the fan, and at the same time reduce the stress concentration of the fan blades at this part, thereby enhancing the structural strength and service life of the fan blades.

[0039] Specifically, the predetermined curvature of the fan blade gradually decreases from the first arc-shaped end to the second arc-shaped end.

[0040] In this embodiment, such curvature change is adapted to the speed and pressure change of airflow flowing from near the motor hub to the outside, which can better guide the airflow, make the airflow on the fan blade surface more in line with aerodynamic laws, reduce the friction and separation between the airflow and the fan blade surface, and improve the efficiency and air volume of the fan.

[0041] Specifically, the fan blade has a hook side 11 and a back side 12, and the predetermined curvature of the fan blade gradually increases from the back side to the hook side.

[0042] In this embodiment, this curvature change matches the airflow dynamics characteristics of the hook side and back side when the fan blade rotates, which can optimize the airflow distribution on the hook side and back side, make the airflow on both sides of the fan blade more balanced, improve the overall aerodynamic efficiency of the fan, and also help reduce vibration and noise when the fan blade rotates.

[0043] Specifically, the radius R1 of the fan blade located on the first arc-shaped end is 140-155mm, and the radius R2 of the fan blade located on the second arc-shaped end is 225-235mm.

[0044] In this embodiment, the setting of this size range enables the fan blades to achieve good fit with the motor hub and outer ring, ensuring the stability of the connection between the fan blades and the motor hub, while making full use of the space of the outer ring to optimize the airflow intake and exhaust range, thereby improving the fan's air volume and efficiency.

[0045] Specifically, the tilt angle α of the fan blade located on the first arc-shaped end is 25-35°, and the tilt angle b of the fan blade located on the second arc-shaped end is 20-30°.

[0046] In this embodiment, such an inclination angle is matched with the flow angle of the airflow in different arc segments of the fan blade, which can more effectively push and guide the airflow, enabling the airflow to obtain greater kinetic energy, improving the fan's air delivery capacity and efficiency, while also reducing the impact of the airflow on the fan blade and reducing energy consumption.

[0047] The definitions of inclination angle 'a' and inclination angle 'b' here are as follows: Figure 3 and Figure 4 As shown, this is the angle between the tangent of the rounded corners at both ends of the fan blade and the horizontal line.

[0048] Specifically, the thickness of the fan blade is 1.5-2.5mm; the outer ring of the outer ring is provided with a wind deflector ring 13.

[0049] In this embodiment, the wind deflector ring can guide and constrain the airflow to prevent it from flowing back.

[0050] Specifically, the inner wall of the motor hub is provided with a plurality of heat dissipation fins 14 at intervals.

[0051] In this embodiment, when the motor drives the fan to rotate, the heat sink fins rotate with the fan, providing the motor with an airflow speed of 2-4 meters per second to remove the heat from the motor surface, dissipate the heat generated by the motor in a timely manner, effectively reduce the motor temperature, ensure that the motor operates within a suitable temperature range, improve the reliability and service life of the motor, and thus ensure the overall stable operation of the fan.

[0052] This application uses data simulation data compared to conventional products on the market (as shown in the table below). Figure 5 As shown.

[0053] Based on the data simulation tables, at the same input speed (e.g., 3000rpm, 3200rpm), the HV-550R-3 fan of this application exhibits significant advantages compared to the comparative HV-550R-2 fan, with the following key features: Efficiency Advantage: The fan of this application exhibits higher efficiency under various static pressure conditions. For example, at 3000 rpm, the efficiency of the fan of this application reaches 47.0%, while the highest efficiency of the comparative example is 42.8%; at 3200 rpm, the efficiency of the fan of this application reaches 50.8%, while the highest efficiency of the comparative example is 43.6%. This is due to the unique first arc section, second arc section, and tip structure of the fan blades, which optimizes the airflow on the fan blade surface and at the connection between the fan blades and the outer ring, reduces vortex and airflow separation, and improves energy utilization efficiency.

[0054] Advantages in flow rate and mass flow rate: Under the same static pressure, the fan in this application has a larger flow rate and mass flow rate. Taking the operating condition of 3200 rpm and static pressure of 961 Pa as an example, the flow rate of this application is 3.116 m3 / s and the mass flow rate is 3.69 kg / s, while the comparative example has a flow rate of 2.213 m3 / s and a mass flow rate of 2.62 kg / s. The structural design of the fan blades, such as the curvature variation and tilt angle setting, more effectively propels the airflow, enabling the airflow to gain greater kinetic energy and thus transport more gas.

[0055] Advantages of Torque and Power Balance: While achieving higher efficiency and greater flow rate, the torque and power of this fan do not increase excessively, achieving a good balance between performance and energy consumption. For example, at 3200 rpm and a static pressure of 1012 Pa, the torque of this fan is 19.49 Nm and the power is 6.1251413613 Nm, while the comparative model has a torque of 16.23 Nm and a power of 5.1141361207 Nm. The power increase is within a reasonable range despite the improved efficiency and flow rate. This is because the optimized fan blade structure allows for more even force distribution, reducing unnecessary energy loss. Note to those skilled in the art: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modifications using the concept of this utility model will be included within the scope of protection of this patent.

Claims

1. A novel high-voltage electric fan for automobiles, comprising a motor hub, fan blades, and an outer ring, wherein the fan blades have a predetermined curvature, characterized in that: The fan blade includes a first arc-shaped end connected to the motor hub and a second arc-shaped end connected to the inner wall of the outer ring, one end of the second arc-shaped end having a pointed tip extending in the direction of rotation.

2. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: One side of the tip has an inclined surface, and one side of the fan blade has a side curved surface. The angle c between the line connecting the endpoints of the two ends of the side curved surface and the inclined surface is 110-125°.

3. The novel high-voltage electronic fan for vehicles according to claim 2, characterized in that: The inclined surface and the side curved surface are connected by a circular arc transition.

4. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The predetermined curvature of the fan blade gradually decreases from the first arc end to the second arc end.

5. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The fan blade has a hook side and a back side, and the predetermined curvature of the fan blade gradually increases from the back side to the hook side.

6. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The radius R1 of the fan blade located on the first arc end side is 140-155mm, and the radius R2 of the fan blade located on the second arc end side is 225-235mm.

7. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The tilt angle α of the fan blade on the first arc-shaped end is 25-35°, and the tilt angle b of the fan blade on the second arc-shaped end is 20-30°.

8. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The thickness of the fan blades is 1.5-2.5 mm.

9. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The outer ring is provided with a windproof ring on its outer edge.

10. The novel high-voltage electronic fan for vehicles according to claim 1, characterized in that: The inner wall of the motor hub is provided with several heat dissipation fins at intervals.

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