CN209454882U - Air Flow Control Devices and Vehicles - Google Patents

Abstract

The utility model provides an air flow control device and a vehicle. The air flow control device (100) has a diffuser (1), and the diffuser (1) is arranged at a vehicle, wherein the air flow control device (100) also has a vortex generator (2), wherein, The vortex generator (2) has an assembly part (21) and a vortex generating part (22) connected to the assembly part (21), and the vortex generator (2) is assembled on the On the diffuser (1), the vortex generating portion (22) is configured in the shape of a blade and arranged obliquely relative to the traveling direction of the vehicle.

Description

Air Flow Control Devices and Vehicles

technical field

The utility model relates to an automobile/racing car, in particular to the design of a diffuser for an automobile/racing car, in particular to an air flow control device and a vehicle equipped with the air flow control device.

Background technique

The background technology related to the utility model includes automobile aerodynamics and diffuser. The development of automotive aerodynamics today focuses on several aspects. One is to further reduce the resistance of the car, so as to achieve higher energy efficiency; the other is to increase the downforce, so as to increase the stability and safety of the car, especially the sports car under medium and high speed driving conditions. The third is to reduce the noise generated during high-speed driving from the perspective of aeroacoustics. Excellent aerodynamic design can effectively improve the performance mentioned above.

At present, although the diffuser can improve the aerodynamic performance of the car (the greater the angle of attack of the diffuser within a certain range, the greater the performance improvement), but the diffuser with a large angle is prone to airflow separation, which limits the performance of the diffuser. play.

Utility model content

The purpose of the utility model is to effectively solve the problem of separation of the airflow, so that the diffuser can be set to a larger angle of attack without causing separation of the airflow, and greatly improves the function of the diffuser.

In addition, the utility model also aims to solve or alleviate other technical problems existing in the prior art.

The utility model solves the above problems by providing an air flow control device and a vehicle equipped with the air flow control device. Specifically, according to one aspect of the utility model, it provides:

An air flow control device having a diffuser arranged at a vehicle, wherein the air flow control device further has a vortex generator, wherein the vortex generator has a mounting portion and a vortex generating portion connected to the fitting portion, through which the vortex generator is assembled on the diffuser, the vortex generating portion is configured in a blade shape and arranged obliquely relative to the vehicle traveling direction.

Optionally, according to an embodiment of the present utility model, the vortex generating portion is configured as a triangle.

Optionally, according to an embodiment of the present utility model, the vortex generating part is vertically arranged on the fitting part.

Optionally, according to an embodiment of the present utility model, the vortex generators are in pairs, and the vortex generators of each pair are arranged on the diffuser in a figure-eight shape or parallel to each other.

Optionally, according to an embodiment of the present utility model, the vortex generators are paired in pairs, and the vortex generators of each pair are arranged as mirror images of each other.

Optionally, according to an embodiment of the present utility model, the vortex generators are arranged in a row on the diffuser.

Optionally, according to an embodiment of the present utility model, the diffuser has a curved surface or an inclined surface, and the vortex generator is arranged on the curved surface or the inclined surface.

According to still another aspect of the present utility model, the present utility model provides a vehicle, which includes any one of the above-mentioned air flow control devices.

The advantages of the provided air flow control device and the vehicle equipped with the air flow control device include: using the vortex generator to reduce the angle of attack of the diffuser while maintaining the downforce level of the whole vehicle, reducing the drag of the whole vehicle, Achieve energy saving, emission reduction and noise reduction; use vortex generators to increase the angle of attack of the diffuser, increase the downforce of the vehicle with a higher lift-to-drag ratio, and improve handling, stability, and safety at the cost of minimal resistance.

Description of drawings

The above and other features of the present invention will become apparent with reference to the accompanying drawings, wherein,

Fig. 1 shows a schematic diagram of an embodiment of an air flow control device according to the present invention;

Fig. 2 shows a schematic diagram of an embodiment of a vortex generator according to the present invention.

Detailed ways

It is easy to understand that, according to the technical solution of the present utility model, those skilled in the art can propose various interchangeable structural modes and implementation modes without changing the spirit of the present utility model. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the whole of the utility model or as a limitation or restriction on the technical solution of the utility model.

The directional terms such as up, down, left, right, front, back, front, back, top, and bottom that are mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings, and they are It is a relative concept, so it may change accordingly according to its different positions and different usage states. Accordingly, these or other directional terms should not be construed as limiting terms. In addition, the terms "first", "second", "third", etc. or similar expressions are used for description and distinction purposes only, and should not be construed as indicating or implying the relative importance of corresponding components.

Referring to FIG. 1 and FIG. 2 , they respectively show a schematic diagram of an embodiment of an air flow control device 100 according to the present invention and a schematic diagram of an embodiment of a vortex generator 2 according to the present invention. The air flow control device 100 has a diffuser 1 which is arranged on a vehicle, wherein the air flow control device 100 also has a vortex generator 2 , wherein the vortex generator 2 has a mounting part 21 And the vortex generating part 22 connected with the assembling part 21, the vortex generator 2 is assembled on the diffuser 1 through the assembling part 21, the vortex generating part 22 is configured as a blade and travels relative to the vehicle The directions are arranged obliquely.

It should be understood that the diffuser is an aerodynamic device that was first used in automobile competitions, and was later popularized in some super sports cars. Nowadays, more and more high-performance cars and civilian cars are also equipped with diffusers. The main functions of the diffuser include accelerating the circulation of the airflow at the bottom of the car and combing the airflow leaving the rear of the car to increase the overall lift-to-drag ratio of the car. Specifically, the diffuser mainly uses the principle that the fluid velocity is inversely proportional to the pressure, as well as the Coanda effect (Coanda effect) and the Venturi effect (Venturi effect), to quickly export the airflow at the lower part of the vehicle chassis, increasing the The speed of the airflow under the vehicle chassis forms a low-pressure area to enhance the downforce of the vehicle. The understanding of the simple image is to quickly diffuse and export the air to accelerate the flow of air. The higher the air velocity, the smaller the air pressure perpendicular to the air flow. This device is loaded on the bottom of the vehicle, so that the air pressure of the upper part of the vehicle is greater than the air pressure of the bottom, thereby forming an air pressure difference, causing the vehicle to generate a pressure toward the ground, that is, the so-called increased downforce, so that the tires of the vehicle have a greater pressure. good grip.

The vortex generator is a flow control device that can effectively suppress the separation of the airflow and increase the energy exchange in the vertical direction of the airflow on the surface where it is located, so that the airflow can closely adhere to the surface and improve aerodynamic efficiency. The vortex generating part 22 is configured as a vane and arranged obliquely relative to the vehicle's running direction, so that the vortex generating part 22 can generate a vortex, so that the airflow separation phenomenon at its position can be suppressed to achieve enhanced downforce effect. Furthermore, the blade shape can also be produced relatively easily.

It can be seen particularly well in FIG. 2 that the vortex generators 22 are designed in a triangular shape. The triangular design has the highest aerodynamic efficiency improvement and the least additional drag, especially in the case of particularly low ground clearance, which can maintain performance, which is very important especially for racing cars and high-performance cars. Furthermore, triangles can also be produced relatively easily. It should be understood that other shapes are possible, such as rectangular.

It can also be seen from FIG. 2 that the vortex generating portion 22 is arranged vertically on the assembly portion 21 . Here, the vortex generating portion 22 and the fitting portion 21 are perpendicular to each other. In addition, the vortex generators 2 are in pairs, and each pair of vortex generators 2 is arranged on the diffuser 1 in a figure-of-eight shape or parallel to each other, the figure-of-eight being "\/\/", and the parallel arrangement being "\ \ / /", that is to say the figure-of-eight or parallel arrangement of the pairs can also be identical or different, as can be seen, for example, from FIG. 1 . This arrangement makes the direction of the vortex generated by the adjacent vortex generators 2 opposite and paired, so that the direction of the downforce caused by each group of vortex generators 2 can be consistent, thereby achieving a better effect. Advantageously, the figure-eight head (that is, the arrangement position with a smaller opening) is on the windward side, and the other end is on the leeward side. It should be understood that other arrangements can also be provided in specific embodiments.

Optionally, the vortex generators 2 are in pairs and each pair of vortex generators 2 is arranged in a mirror image of each other, and the vortex generators 2 are arranged in a row on the diffuser 1, for example, one row or rows. Furthermore, the vortex generator 2 can be constructed in one piece in order to obtain higher strength, higher torsional rigidity and lower resistance.

Regarding the arrangement position of the vortex generator 2, it is exemplary that the diffuser 1 has a curved surface or an inclined surface, and the vortex generator 2 is arranged at the curved surface or the inclined surface, thereby being able to It works where air stripping (i.e. air leaving the surface) would otherwise be more likely to occur. Furthermore, the vortex generator 2 can also alternatively or additionally be arranged at the inlet of the diffuser. It should be understood that the size and shape of the vortex generator 2 (for example, the angle in the case of a triangle) can be modified according to actual needs.

After wind tunnel test demonstration, the utility model can achieve more than 10% improvement in aerodynamic efficiency (lift-to-drag ratio) under conventional ground clearance, and 20% improvement in aerodynamic efficiency under low ground clearance, and The utility model is not sensitive to the Reynolds number, and can function at a wide range of vehicle speeds.

It should be understood that the air flow control device 100 of the present invention can be installed on various vehicles, including gasoline vehicles, diesel vehicles, cars, trucks, passenger cars, electric vehicles, racing cars and so on. Therefore, the subject matter of the present invention is also intended to protect various vehicles equipped with the air flow control device 100 of the present invention.

To sum up, the utility model is essentially an aerodynamic design in the automotive field, which belongs to the field of flow control in aerodynamics, and is a passive control technology. It uses vortex generators for flow control of the airflow in the diffuser of the car. The utility model uses the vortex generator to reduce the angle of attack of the diffuser under the condition of maintaining the downforce level of the whole vehicle, reduces the resistance of the whole vehicle, and realizes energy saving, emission reduction and noise reduction; The lift-to-drag ratio is used to increase the downforce of the vehicle, and the controllability, stability, and safety are improved at the cost of extremely small resistance.

It should be understood that all the above preferred embodiments are exemplary rather than restrictive, those skilled in the art can make the specific embodiments described above under the concept of the utility model, for example, in different shapes of vortex generators (Triangle, square, trapezoid, curved surface, etc.), different installation positions (diffuser inlet, diffuser middle), different placement forms (one or more rows, etc.) within the scope of new legal protection.

Claims (8)

1. An air flow control device (100), the air flow control device (100) has a diffuser (1), and the diffuser (1) is arranged at the vehicle, characterized in that the air flow control device (100) also has a vortex generator (2), wherein the vortex generator (2) has an assembly part (21) and a vortex generating part (22) connected to the assembly part (21), and the vortex generation The diffuser (2) is assembled on the diffuser (1) through the assembly part (21), and the vortex generating part (22) is configured in a blade shape and arranged obliquely relative to the vehicle traveling direction. 2. The air flow control device (100) according to Claim 1, characterized in that, the vortex generating portion (22) is configured in a triangular shape. 3. The air flow control device (100) according to Claim 1, characterized in that, the vortex generating part (22) is vertically arranged on the fitting part (21). 4. The air flow control device (100) according to claim 1, characterized in that, the vortex generators (2) are paired in pairs and the vortex generators (2) of each pair are figure-eight or parallel to each other ground on the diffuser (1). 5. The air flow control device (100) according to Claim 2, characterized in that, the vortex generators (2) are paired in pairs and the vortex generators (2) of each pair are arranged as mirror images of each other. 6. The air flow control device (100) according to Claim 1, characterized in that, the vortex generators (2) are arranged in a row on the diffuser (1). 7. The air flow control device (100) according to claim 1, characterized in that, the diffuser (1) has a curved surface or an inclined surface, and the vortex generator (2) is arranged on the curved surface or on inclined surfaces. 8. A vehicle, characterized in that the vehicle comprises the air flow control device (100) according to any one of claims 1-7.