Hollowed-out tail wing assembly, automobile and method for improving wind noise of hollowed-out tail wing

Abstract

The invention discloses a hollowed-out empennage assembly, an automobile and a method for improving wind noise of a hollowed-out empennage, and belongs to the technical field of automobile manufacturing, the hollowed-out empennage assembly comprises a hollowed-out empennage and a wind turbine, the hollowed-out empennage is used for being installed on an automobile body, and a hollowed-out channel is formed between the hollowed-out empennage and the automobile body; the wind turbine is located in the hollowed-out channel and comprises a base and rotating blades installed on the base, the base is used for being installed on the portion, at the hollowed-out channel, of the vehicle body, and the rotating blades rotate under the action of airflow passing through the hollowed-out channel. The wind turbine is arranged in the hollowed-out channel of the hollowed-out empennage, the rotating blades of the wind turbine are used for capturing wind energy and reducing the flow speed of airflow, and therefore the flow field of the hollowed-out channel is changed, and aerodynamic noise generated by the hollowed-out empennage can be effectively reduced on the premise that it is guaranteed that the performance and the appearance attractiveness of an automobile are not affected.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a hollow tail wing component, an automobile and a method for improving wind noise of the hollow tail wing. Background Art

[0002] With the continuous progress of the global automobile industry, consumers' requirements for automobile products are increasing day by day, not only focusing on their internal performance, but also putting forward higher requirements for appearance design. As a key element in optimizing the appearance and performance of vehicles, the importance of automobile rear wings is becoming increasingly prominent. The rear wing can not only significantly enhance the driving stability of the vehicle by reducing the lift of the vehicle and improving the grip, but also improve the airflow distribution at the rear of the vehicle, reduce the resistance during driving, and thus improve fuel economy. In addition, the exquisite design of the rear wing also greatly enriches the appearance aesthetics of the car, especially in SUV models, the hollow rear wing design is widely favored for its unique sports styling and brand personality display.

[0003] The hollow tail wing design adopts an external structure with good aerodynamic characteristics, effectively reducing the drag coefficient of the vehicle, and provides innovative possibilities for the design of the rear windshield without wipers, further improving the practicality and aesthetics of the vehicle. However, while this design brings many advantages, it also introduces a new problem - aerodynamic noise. When high-speed airflow flows through the hollow tail wing, the airflow separation phenomenon is likely to produce strong vortices, which in turn cause high-intensity aerodynamic noise. This noise is transmitted into the car through the rear windshield, which has a significant impact on the comfort of the driver and passengers.

[0004] In order to solve the problem of wind noise caused by hollow tail wing, some technical means have been applied in practice, mainly including optimizing the tail wing structure design, reducing the size of the hollow opening of the tail wing, and installing a deflector in front of the tail wing. These measures have reduced the generation of wind noise to a certain extent, but each has its limitations. For example, although optimizing the design structure of the tail wing has significant effects, it often involves complex calculations and experimental verification processes, resulting in high R&D costs and long cycles; and although installing a deflector is easy to operate, it may sacrifice the aesthetics and aerodynamic performance of the tail wing, affecting the overall performance of the vehicle.

[0005] To sum up, how to effectively reduce the aerodynamic noise generated by the hollow tail wing while ensuring that the performance and appearance of the car are not affected is a technical problem that needs to be urgently solved in the current automotive industry. Summary of the invention

[0006] The purpose of the present invention is to provide a hollow tail wing assembly, an automobile and a method for improving the wind noise of the hollow tail wing, so as to solve the problems existing in the above-mentioned prior art. A wind turbine is arranged in the hollow channel of the hollow tail wing, and the rotating blades of the wind turbine are used to capture wind energy and reduce the flow velocity of the airflow, thereby changing the flow field of the hollow channel, thereby effectively reducing the aerodynamic noise generated by the hollow tail wing while ensuring that the performance and appearance of the automobile are not affected.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a hollow tail wing assembly, comprising a hollow tail wing and a wind turbine, wherein the hollow tail wing is used to be installed on a vehicle body, and a hollow channel is provided between the hollow tail wing and the vehicle body; the wind turbine is located in the hollow channel, and the wind turbine comprises a base and rotating blades installed on the base, wherein the base is used to be installed on the vehicle body at the hollow channel, and the rotating blades rotate under the action of airflow passing through the hollow channel.

[0009] In one embodiment, the wind turbine is a vertical axis wind turbine, which further includes a tower, the rotating blades are rotatably connected to the top of the tower, and the bottom of the tower is connected to the base.

[0010] In one embodiment, the vertical axis wind turbine further comprises a generator, the stator of the generator is connected to the tower, the rotating blades are connected to the rotor of the generator, and the generator is electrically connected to an energy storage device and / or an in-vehicle electrical device.

[0011] In one embodiment, the hollow tail wing has two hollow channels arranged side by side, and the wind turbine is arranged in each of the hollow channels.

[0012] In one embodiment, the wind turbine is installed in the middle of the hollow channel.

[0013] In one embodiment, an angle adjustment mechanism is further included, and the angle adjustment mechanism is used to adjust the inclination angle of the rotating blade.

[0014] In one embodiment, a rotation speed sensor and a rotation speed control mechanism are further included, wherein the rotation speed sensor is used to monitor the rotation speed of the rotating blades, and the rotation speed control mechanism is used to adjust the rotation speed of the rotating blades.

[0015] In one embodiment, the rotating blades are made of metal material or composite material, the metal material is aluminum alloy, magnesium alloy or titanium alloy, and the composite material is carbon fiber composite material, glass fiber reinforced plastic or aramid reinforced plastic.

[0016] The present invention also provides an automobile, comprising the hollow tail wing assembly as described above.

[0017] The present invention also provides a method for improving wind noise of a hollow tail wing, comprising the following steps:

[0018] S1. Select a wind turbine according to the size and structural arrangement of the hollow channel of the hollow tail wing;

[0019] S2, fixing the wind turbine inside the hollow channel so that it can be in full contact with the airflow;

[0020] S3. By adjusting the angle and / or rotation speed of the rotating blades of the wind turbine, the flow field of the hollow channel can be changed to reduce wind noise.

[0021] Compared with the prior art, the present invention has achieved the following technical effects:

[0022] The present invention arranges a wind turbine in the hollow channel of the hollow tail wing and uses the rotating blades of the wind turbine to capture wind energy. When the airflow passes through the wind turbine, the kinetic energy of the wind is converted into mechanical energy and the flow velocity is reduced, thereby changing the flow field of the hollow channel. This can effectively reduce the aerodynamic noise generated by the hollow tail wing while ensuring that the performance and appearance of the automobile are not affected.

[0023] Other technical solutions included in the present invention can also achieve the following technical effects:

[0024] The wind turbine of the present invention also includes a generator. The wind energy captured by the rotating blades can be converted into electrical energy through the generator, thereby providing additional power supply for electrical equipment in the vehicle, thereby reducing dependence on traditional energy and improving the environmental protection performance and economy of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a hollow tail wing disposed on a vehicle body in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a wind turbine in an embodiment of the present invention;

[0028] Among them, 1. car body; 2. hollow tail wing; 3. hollow channel; 4. wind turbine; 41. flange; 42. tower; 43. generator; 44. connecting arm; 45. rotating blades; 46. base. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a hollow tail wing assembly, an automobile and a method for improving the wind noise of the hollow tail wing, so as to solve the problems existing in the prior art. A wind turbine is arranged in the hollow channel of the hollow tail wing, and the rotating blades of the wind turbine are used to capture wind energy and reduce the flow velocity of the airflow, thereby changing the flow field of the hollow channel, thereby effectively reducing the aerodynamic noise generated by the hollow tail wing while ensuring that the performance and appearance of the automobile are not affected.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Although the prior art has a certain effect in reducing the wind noise of the hollow tail 2, the design method for optimizing the structure of the hollow tail 2 often requires a large number of experiments and calculations, which is costly and takes a long time. The present invention provides a method with low cost and short cycle by installing a wind turbine 4 in the hollow channel 3 of the hollow tail 2 to change the flow field of the hollow channel 3 to reduce wind noise. In addition, although the method of installing the guide plate used in the prior art is simple and easy, it may affect the aesthetics and aerodynamic performance of the hollow tail 2. The present invention avoids the influence on the aesthetics and aerodynamic performance of the hollow tail 2 by installing a wind turbine 4 in the hollow channel 3.

[0033] like Figure 1 and Figure 2As shown, the present invention provides a hollow tail assembly, including a hollow tail 2 and a wind turbine 4. The hollow tail 2 is used to be installed on the body 1 at the rear of the car. The hollow tail 2 is set to reduce the lift of the car and improve the grip to increase the stability of the car. At the same time, the flow field at the rear of the car is improved to reduce the driving resistance, and the appearance of the car can be enhanced. There is a hollow channel 3 between the hollow tail 2 and the body 1, and the hollow channel 3 is used for the circulation of airflow. The wind turbine 4 is located in the hollow channel 3. The wind turbine 4 includes a base 46 and a rotating blade 45 installed on the base 46. The rotating blade 45 can be installed on a vertical axis or a horizontal axis. The rotating blade 45 is driven to rotate by the airflow flowing through the hollow channel 3, so that the rotating blade 45 can capture wind energy and change the flow field of the hollow channel 3. When the wind turbine 4 is in operation, its rotating blades 45 have absorbed the airflow and converted it into wind energy. The absorbed wind speed is reduced, and the wind direction is changed, thereby changing the flow field, reducing wind speed excitation, and reducing the excitation vibration hitting the rear windshield, thereby improving wind noise. The base 46 is used to be installed on the vehicle body 1 at the hollow channel 3, and the vehicle body 1 is used as a support to ensure the stability of the wind turbine 4 during operation, so as to avoid the problem of structural instability caused by the hollow tail wing 2 carrying the wind turbine 4.

[0034] The present invention arranges a wind turbine 4 in the hollow channel 3 of the hollow tail wing 2, and uses the rotating blades 45 of the wind turbine 4 to capture wind energy. When the airflow flows through the wind turbine 4, the kinetic energy of the wind is converted into mechanical energy, and the flow velocity is reduced, thereby changing the flow field of the hollow channel 3, and then being able to effectively reduce the aerodynamic noise generated by the hollow tail wing 2 while ensuring that the performance and appearance of the automobile are not affected. The scheme of the present invention can not only effectively reduce wind noise, but also does not require a large amount of experiments and calculations, has low cost, short cycle, and has high practical value. The present invention provides a new idea and method for solving the wind noise problem of the hollow tail wing 2, provides technical support for the development of the automobile industry, and at the same time, also provides a new direction for the application of wind power generation technology in the field of automobile engineering, and has broad application prospects.

[0035] In one embodiment, the wind turbine 4 is a vertical axis wind turbine, which is efficient and stable. The core concept of the vertical axis wind turbine is that its rotation axis is vertically arranged. This feature enables the wind turbine 4 to more effectively capture and utilize wind energy from all directions, rather than being limited to the specific wind direction that the traditional horizontal axis wind turbine relies on, so that the airflow of the hollow channel 3 can be better improved. The core component of the vertical axis wind turbine also includes a tower 42, which serves as the supporting body of the entire structure. The top of the tower 42 is rotatably connected to the rotating blades 45, and the bottom of the tower 42 is fixedly connected to the base 46. The base 46 is installed on the vehicle body 1 to provide the necessary support force to prevent the vertical axis wind turbine from tilting or displacing during rotation, thereby ensuring long-term stable operation.

[0036] In one embodiment, the vertical axis wind turbine further includes a generator 43, the stator of the generator 43 is connected to the tower 42, and is fixedly supported by the tower 42 to maintain the stable state of the stator, and the rotating blades 45 are connected to the rotor of the generator 43, and the rotor rotates under the drive of the rotating blades 45, so that the stator and rotor of the generator 43 can rotate relative to each other to convert wind energy into electrical energy. The generator 43 is electrically connected to the energy storage device and / or the electrical equipment in the vehicle, and the wire used for the electrical connection can be set inside the tower 42, that is, a channel is set in the tower 42, and the base 46 and the vehicle body 1 can be provided with corresponding through holes, so that the electrical energy converted by the generator 43 can be transmitted to the vehicle after the wire passes through the tower 42, the base 46 and the vehicle body 1.

[0037] In one embodiment, a single hollow tail wing 2 may be provided at the rear of the automobile, or multiple hollow tail wing 2 may be provided. In this example, two hollow channels 3 are provided side by side, and the airflow through the hollow channels 3 flows along the front-rear direction of the vehicle body 1. A wind turbine 4 is provided in each hollow channel 3, and the wind turbine 4 improves the flow field of the corresponding hollow channel 3.

[0038] In one embodiment, the wind turbine 4 is installed in the middle of the hollow channel 3. First, the middle position can ensure that the wind turbine 4 can capture the airflow flowing through the hollow tail wing 2 to the maximum extent during the driving of the vehicle, and can effectively improve the airflow passing through the hollow channel 3 regardless of high-speed driving or low-speed cruising; secondly, by placing the wind turbine 4 in the hollow channel 3, the interference of the external environment on the operation of the wind turbine 4 can be effectively reduced, such as the influence of side winds, rain erosion, etc., thereby extending the service life of the wind turbine 4 and improving its efficiency.

[0039] In one embodiment, an angle adjustment mechanism is further included, and the angle adjustment mechanism is used to adjust the inclination angle of the rotating blade 45. The rotating blade 45 is connected to a connecting arm 44. The upper connecting arm 44 is rotatably mounted on the top of the tower 42 through a flange 41, and the lower connecting arm 44 is connected to the rotor of the generator 43. The length or angle of the connecting arm 44 can be adjusted by the angle adjustment mechanism, so that the inclination angle of the rotating blade 45 can be adjusted. By changing the inclination angle of the rotating blade 45, the flow field of the hollow channel 3 can be changed, and the wind noise can be reduced. In addition, the appropriate inclination angle can also control the noise generated by the wind turbine 4 itself.

[0040] In one embodiment, a speed sensor and a speed control mechanism are also included. The speed sensor is used to monitor the speed of the rotating blades 45, and the speed control mechanism is used to adjust the speed of the rotating blades 45. By adjusting the speed of the rotating blades 45, the flow field of the hollow channel 3 can be changed to reduce wind noise. In addition, the appropriate speed can also control the noise generated by the wind turbine 4 itself. The speed control mechanism can adjust the speed of the rotating blades 45 in a variety of ways, such as adjusting the electromagnetic force, using a variable speed and variable pitch mode, etc. For adjusting the electromagnetic force, the speed can be adjusted by changing the magnetic force in the generator 43. For the variable speed and variable pitch mode, the speed can be adjusted by adjusting the pitch angle. In addition, the speed can also be adjusted by changing the inclination angle of the rotating blades 45. Through the aforementioned method of adjusting the speed, the speed adjustment of the wind turbine 4 under different loads or application conditions can be achieved to meet different needs.

[0041] By setting the aforementioned angle adjustment mechanism and speed control mechanism, the wind turbine 4 can be automatically adjusted during the driving of the car, and the speed and inclination of the rotating blades 45 can be adjusted according to different wind speeds and driving conditions, thereby achieving precise control of the flow field of the hollow tail wing 2, further improving the effect of reducing wind noise. This feature enables the present invention to maintain good performance in different driving environments and has stronger adaptability.

[0042] In one embodiment, the rotating blade 45 is made of metal material or composite material, the metal material is aluminum alloy, magnesium alloy or titanium alloy, and the composite material is carbon fiber composite material, glass fiber reinforced plastic or aramid reinforced plastic. By selecting a suitable material to make the rotating blade 45, the durability and lightness of the rotating blade 45 can be ensured, and the stability and fuel economy of the vehicle will not be adversely affected while ensuring the service life.

[0043] like Figure 1 As shown, the present invention also provides a car, including the hollow tail assembly as described above. The hollow tail 2 in the hollow tail assembly is installed at the rear of the vehicle body 1, and there is a hollow channel 3 between the hollow tail 2 and the vehicle body 1, and the wind turbine 4 in the hollow tail assembly is installed in the hollow channel 3. The car of the present invention is not limited to the type of vehicle, and can be a sedan, a sports car, an off-road vehicle, etc.

[0044] like Figure 1 and Figure 2 As shown, the present invention also provides a method for improving the wind noise of a hollow tail wing, comprising the following steps:

[0045] S1. According to the size and structural arrangement of the hollow channel 3 of the hollow tail wing 2, a wind turbine 4 is selected so that the airflow through the hollow channel 3 can flow to the wind turbine 4 and drive the wind turbine 4 to rotate. The rotating blades 45 of the wind turbine 4 are used to absorb the wind energy of the airflow.

[0046] S2. The wind turbine 4 is fixed inside the hollow passage 3. When fixed, the wind turbine 4 can be installed on the vehicle body 1 through the base 46 of the wind turbine 4. After installation, the rotating blades 45 of the wind turbine 4 should be able to fully contact with the airflow.

[0047] S3. By adjusting the angle and / or rotation speed of the rotating blades 45 of the wind turbine 4, the flow field of the hollow channel 3 can be changed to reduce wind noise. When the airflow flows into the inlet of the hollow channel 3, the rotating blades 45 of the wind turbine 4 installed in the hollow channel 3 absorb the kinetic energy of the wind and convert it into mechanical energy. The wind speed after absorption is reduced, making the airflow in the flow field more stable, and no pulsation is generated to hit the rear windshield, reducing the wind vibration excitation of the rear windshield, thereby reducing wind noise.

[0048] In one embodiment, the method for improving the wind noise of the hollow tail 2 also includes the arrangement of the power generation system line. The power generation system includes a generator 43 installed on a tower 42. The tower 42 is provided with a wiring channel. The wire is introduced into the vehicle through the tower 42. The line direction can be arranged without affecting the flow field distribution of the hollow channel 3, so as to facilitate the supply of electricity to the electrical equipment in the vehicle. By implementing the above method for improving the wind noise of the hollow tail 2, the wind noise of the hollow tail 2 can be effectively controlled and the driving comfort can be improved; at the same time, it avoids major changes to the vehicle's appearance design and internal components, reduces manufacturing costs, shortens the cycle, and has good practical value; and uses renewable energy - wind energy, reduces dependence on traditional energy, and further improves the environmental performance of the vehicle.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A hollow tail wing assembly, characterized in that: include: A hollow tail wing, the hollow tail wing is used to be mounted on the vehicle body, and a hollow channel is provided between the hollow tail wing and the vehicle body; And a wind turbine, which is located in the hollow channel and includes a base and rotating blades installed on the base, the base is used to be installed on the vehicle body at the hollow channel, and the rotating blades rotate under the action of the airflow passing through the hollow channel.

2. The hollow tail wing assembly according to claim 1, characterized in that: The wind turbine is a vertical axis wind turbine, which also includes a tower. The rotating blades are rotatably connected to the top of the tower, and the bottom of the tower is connected to the base.

3. The hollow tail wing assembly according to claim 2, characterized in that: The vertical axis wind turbine further comprises a generator, a stator of the generator is connected to the tower, the rotating blades are connected to a rotor of the generator, and the generator is electrically connected to an energy storage device and / or an in-vehicle electrical device.

4. The hollow tail wing assembly according to claim 1, characterized in that: The hollow tail wing has two hollow channels arranged side by side, and the wind turbine is arranged in each of the hollow channels.

5. The hollow tail wing assembly according to claim 4, characterized in that: The wind turbine is installed in the middle of the hollow channel.

6. The hollow tail wing assembly according to claim 1, characterized in that: It also includes an angle adjustment mechanism, which is used to adjust the inclination angle of the rotating blades.

7. The hollow tail wing assembly according to claim 1, characterized in that: It also includes a rotation speed sensor and a rotation speed control mechanism. The rotation speed sensor is used to monitor the rotation speed of the rotating blades, and the rotation speed control mechanism is used to adjust the rotation speed of the rotating blades.

8. The hollow tail wing assembly according to claim 1, characterized in that: The rotating blades are made of metal material or composite material, the metal material is aluminum alloy, magnesium alloy or titanium alloy, and the composite material is carbon fiber composite material, glass fiber reinforced plastic or aramid reinforced plastic.

9. A car, characterized in that: It comprises a hollow tail wing assembly as described in any one of claims 1 to 8.

10. A method for improving wind noise of a hollow tail wing, characterized in that: The following steps are involved: S1. Select a wind turbine according to the size and structural arrangement of the hollow channel of the hollow tail wing; S2, fixing the wind turbine inside the hollow channel so that it can be in full contact with the airflow; S3. By adjusting the angle and / or rotation speed of the rotating blades of the wind turbine, the flow field of the hollow channel can be changed to reduce wind noise.

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