Flow guide part and vehicle
By designing the shape and position of the flow channel, inlet, and outlet in the guide component, and utilizing the jet dispersion of large vortices, the problem of insufficient ability of existing guide components to reduce wheel wind resistance is solved, achieving more effective wind resistance reduction and improved range.
Patent Information
- Application Number
- CN202423080529.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing aerodynamic deflectors have limited ability to reduce wheel drag.
Design a flow guide with a flow guide surface and a leeward surface, and an internal flow channel. The flow guide surface and the leeward surface are connected to the inlet and the outlet, respectively. The equivalent diameter of the inlet is larger than the equivalent diameter of the outlet. The cross-sectional area of the flow channel decreases. The shape of the inlet and outlet can be circular, elliptical or polygonal. Multiple inlets and outlets are set and correspond one-to-one. The fluid forms a jet in the flow channel to disperse the large vortex.
By dispersing the large vortex to form multiple small vortices, the intensity of the large vortex is weakened, the airflow separation in the wheel cavity is improved, the wind resistance of the guide component itself is reduced, and the vehicle's range is enhanced.
Smart Images
Figure CN223672643U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicles, in particular to a flow guide and a vehicle. BACKGROUND
[0002] In order to reduce the positive impact area of air flow on the wheels and thus reduce wind resistance, a flow guide plate is usually installed in front of the wheels to guide and divide the flow. However, in the related art, the flow guide has limited ability to reduce wind resistance. CONTENT
[0003] The present application provides a flow guide and a vehicle to improve the ability of the flow guide to reduce wind resistance of the wheels.
[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a flow guide is provided, which is arranged in front of a wheel, the flow guide has a flow guide surface and a leeward surface, the flow guide surface is used to guide the airflow, the leeward surface is arranged opposite to the wheel, a flow channel is arranged in the flow guide, the flow guide surface is provided with an inlet communicating with the flow channel, and the leeward surface is provided with an outlet communicating with the flow channel.
[0005] Optionally, the equivalent diameter of the inlet is greater than the equivalent diameter of the outlet.
[0006] Optionally, the equivalent diameter of the inlet is D1, and the equivalent diameter of the outlet is D2, wherein D1 / D2=N, 1<N≤4.
[0007] Optionally, 4mm≤D1≤20mm; and / or 1mm≤D2≤5mm.
[0008] Optionally, the shape of the inlet is circular, elliptical or polygonal; and / or,
[0009] The shape of the outlet is circular, elliptical or polygonal.
[0010] Optionally, along the direction from the inlet to the outlet, the cross-sectional area of the flow channel decreases.
[0011] Optionally, a plurality of inlets are provided, and the spacing between two adjacent inlets is K1, wherein 2mm≤K1≤10mm.
[0012] Optionally, a plurality of inlets are provided, a plurality of outlets are provided, and a plurality of flow channels are provided, the plurality of inlets, the plurality of outlets and the plurality of flow channels are one-to-one corresponding and communicating.
[0013] Optionally, a plurality of outlets are provided, and the spacing between two adjacent outlets is K2, wherein 1mm≤K2≤5mm.
[0014] Optionally, the area of the flow guide surface is S1, the total area of the inlet is S2, and 0 < S2 ≤ 2S1 / 3.
[0015] Optionally, the area of the leeward surface is S3, the total area of the outlet is S4, and 0 < S4 ≤ 2S3 / 3.
[0016] Optionally, the flow guide surface has a first region and a second region, the air pressure of the airflow guided by the first region is higher than the air pressure of the airflow guided by the second region, and the inlet is arranged in the first region.
[0017] Optionally, the leeward surface has a third region and a fourth region, the air pressure of the airflow guided by the third region is lower than the air pressure of the airflow guided by the fourth region, and the plurality of outlets are arranged in the third region.
[0018] According to a second aspect of the present application, a vehicle is provided, which comprises the flow guide as described above, the flow guide has a flow guide surface and a leeward surface, the flow guide surface is used for guiding airflow, the leeward surface is used for being arranged opposite to the wheel, the flow guide is provided with a flow channel, the flow guide surface is provided with an inlet which is in communication with the flow channel, and the leeward surface is provided with an outlet which is in communication with the flow channel.
[0019] In the embodiment of the present application, when the airflow passes through the flow guide, part of the airflow is deflected along the flow guide surface towards the ground, and the part of the airflow blocks the head-on impact of the airflow on the wheel, so as to reduce the positive pressure area formed by the airflow on the wheel, thereby reducing the wind resistance of the vehicle. Part of the airflow flows along the flow guide surface to the leeward surface and forms a large vortex on the leeward surface, part of the airflow enters the flow channel through the inlet of the flow guide surface and is discharged from the outlet of the leeward surface, and the airflow discharged from the outlet impacts the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex and reducing the wind resistance of the flow guide itself, while improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide, the wheel cavity and the wheel, and thereby improving the effect of reducing the wind resistance of the flow guide.
[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.
[0022] For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings in which:
[0023] Figure 1 is a structural schematic diagram of a flow guide provided in an exemplary embodiment of the present disclosure;
[0024] Figure 2 is a structural schematic diagram of a flow guide provided in an exemplary embodiment of the present disclosure; Figure 1 is a schematic diagram of a flow channel, an inlet and an outlet of a flow guide part shown in the figure;
[0025] Figure 3 is a structural schematic diagram of a flow guide and a wheel position in an exemplary embodiment of the present disclosure;
[0026] Figure 4 is a schematic diagram of an inlet of a first embodiment provided in an exemplary embodiment of the present disclosure;
[0027] Figure 5 is a schematic diagram of an outlet of a first embodiment provided in an exemplary embodiment of the present disclosure;
[0028] Figure 6 is a schematic diagram of an inlet of a second embodiment provided in an exemplary embodiment of the present disclosure;
[0029] Figure 7 is a schematic diagram of an outlet of a second embodiment provided in an exemplary embodiment of the present disclosure;
[0030] Figure 8 is a schematic diagram of an inlet of a third embodiment provided in an exemplary embodiment of the present disclosure;
[0031] Figure 9 is a schematic diagram of an outlet of a third embodiment provided in an exemplary embodiment of the present disclosure;
[0032] Figure 10 is a structural schematic diagram of a flow guide installed on a vehicle in an exemplary embodiment of the present disclosure.
[0033] BRIEF DESCRIPTION OF DRAWINGS
[0034] 100, flow guide; 101, flow guide surface; 1011, first area; 1012, second area; 102, leeward surface; 1021, third area; 1022, fourth area; 103, flow channel; 1031, inlet; 1032, outlet; 200, front apron; 300, wheel; 400, front lip; 500, countersunk bolt; 600, wheel cover; a, first path; b, second path. DETAILED DESCRIPTION
[0035] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.
[0036] The present application provides a flow guide 100, please refer to Figures 1 to 3 , Figure 1 is a structural schematic diagram of the flow guide provided in the exemplary embodiments of the present application, Figure 2 is Figure 1 a schematic diagram of the flow channel, inlet and outlet of the flow guide part shown in FIG. 1; Figure 3 is a structural schematic diagram of the flow guide and the wheel position in the exemplary embodiments of the present application.
[0037] The flow guide 100 is arranged in front of the wheel 300, the flow guide 100 has a flow guide surface 101 and a leeward surface 102, the flow guide surface 101 is used for guiding the airflow, the leeward surface 102 is arranged opposite to the wheel 300, the flow guide 100 is provided with a flow channel 103, the flow guide surface 101 is provided with an inlet 1031 communicated with the flow channel 103, and the leeward surface 102 is provided with an outlet 1032 communicated with the flow channel 103.
[0038] In the flow guide 100 of the embodiment of the present application, with reference to Figure 3 When the airflow passes through the flow guide 100, part of the airflow is deflected to the ground along the flow guide surface 101, and the part of the airflow blocks the head-on impact of the wheel 300, so as to reduce the positive pressure area formed by the airflow on the wheel 300, thereby reducing the wind resistance of the vehicle. Part of the airflow flows along the flow guide surface 101 to the leeward surface 102 and forms a large vortex on the leeward surface 102, part of the airflow enters the flow channel 103 through the inlet 1031 of the flow guide surface 101 and is discharged from the outlet 1032 of the leeward surface 102, and the airflow discharged from the outlet 1032 impacts the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex and reducing the wind resistance of the flow guide 100 itself, and improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the wheel 300, thereby improving the effect of reducing the wind resistance of the flow guide 100.
[0039] It should be noted that, with reference to Figure 3 , part of the airflow is deflected to the ground along the first path a of the flow guide surface 101, part of the airflow flows to the leeward surface 102 along the second path b to form a large vortex on the leeward surface 102, part of the airflow enters the flow channel 103 through the inlet 1031 of the flow guide surface 101 and is discharged from the outlet 1032, and the airflow discharged from the outlet 1032 forms a jet, which impacts the large vortex, so that the large vortex is dispersed to form a plurality of small vortices.
[0040] Furthermore, the inclusion of a flow channel 103, an inlet 1031, and an outlet 1032 in the guide vane 100 enhances its wind resistance reduction capability, decreases wind resistance loss, and increases vehicle range. The guide surface 101 guides the airflow, reducing the dynamic impact of the guide vane 100 on the wheel 300, thereby reducing wind resistance. The jet flow through the flow channel 103 reduces the intensity of large vortices in the wheel cavity and improves the airflow separation state within the wheel cavity, further reducing wind resistance. The guide vane 100 provided in this application, through the jet flow through the flow channel 103, not only reduces the wind resistance of the guide vane 100 itself but also improves airflow separation in the wheel cavity, altering the turbulent coherence structure and further reducing vehicle wind resistance.
[0041] It should be noted that, depending on the vehicle model and operating conditions, the aerodynamic guide 100 can reduce the drag coefficient by 1 to 5 cts. Based on the calculation that a single sedan can increase its range by 5 to 8 km by reducing drag by 10 cts, the aerodynamic guide 100 can increase the range by up to 4 km. The aerodynamic guide 100 provided in this application can adopt a basic aerodynamic guide 100 shell structure with an overlapping groove structure, which is simple, convenient, and practical. The structural material can be made of soft plastic to reduce the weight of the aerodynamic guide 100.
[0042] The shape of entrance 1031 can be set as needed, refer to Figure 4 , Figure 6 and Figure 8 , Figure 4 This is a schematic diagram of the entry point of the first embodiment provided in the exemplary embodiments of this disclosure; Figure 6 This is a schematic diagram of the entry point of the second embodiment provided in the exemplary embodiments of this disclosure; Figure 8 This is a schematic diagram of the entrance of the third embodiment provided in the exemplary embodiments of this disclosure; for example, the shape of the entrance 1031 may be circular, elliptical, or polygonal, etc. Additionally, the shape of the exit 1032 can be set as needed, referring to... Figure 5 , Figure 7 and Figure 9 , Figure 5 This is a schematic diagram of the outlet of the first embodiment provided in the exemplary embodiments of this disclosure; Figure 7 This is a schematic diagram of the outlet of the second embodiment provided in the exemplary embodiments of this disclosure; Figure 9 This is a schematic diagram of the outlet of the third embodiment provided in the exemplary embodiments of this disclosure; for example, the shape of the outlet 1032 is circular, elliptical, or polygonal. It is understood that the shapes of the inlet 1031 and the outlet 1032 may be the same or different.
[0043] Reference Figure 1 and Figure 2In some embodiments, the equivalent diameter of the inlet 1031 is larger than the equivalent diameter of the outlet 1032. The equivalent diameter is an important parameter for measuring the size of a fluid passage, which is usually used to describe the flow characteristics of a fluid in the passage. When the equivalent diameter of the inlet 1031 is larger than the equivalent diameter of the outlet 1032, the fluid can enter more smoothly at the inlet 1031, reducing the flow resistance, which enables the fluid to obtain a higher flow rate and flow under the same pressure, and the high-speed and high-flow jet can more effectively impact and disperse large eddies. Because the equivalent diameter of the inlet 1031 is larger than the equivalent diameter of the outlet 1032, the fluid can accumulate more energy at the inlet 1031, and when these energies are released in the form of a jet, a stronger impact force is generated, and the strong impact force can more effectively penetrate and break large eddies. When the equivalent diameter of the inlet 1031 is larger than the equivalent diameter of the outlet 1032, the jet forms a narrower jet beam at the outlet 1032, which helps the jet to penetrate the large eddy more deeply, which helps to accelerate the decomposition and dissipation of the large eddy.
[0044] It should be noted that the equivalent diameter refers to the equivalent circular diameter with the same resistance and volume as a circular shape.
[0045] In some embodiments, the equivalent diameter of the inlet 1031 is D1, and the equivalent diameter of the outlet 1032 is D2, where D1 / D2=N, 1<N≤4. The larger equivalent diameter D1 of the inlet 1031 can reduce the flow resistance of the fluid entering the flow passage 103, so that the fluid can enter more smoothly. By reasonably setting the ratio of D1 and D2, the flow rate distribution can be optimized, energy loss can be reduced, and flow efficiency can be improved. When the ratio of D1 / D2 is greater than 1 and less than or equal to 4, the flow rate of the fluid from the inlet 1031 to the outlet 1032 is increased, thereby enhancing the impact force of the jet. This impact force helps to better disperse the large eddy into multiple small eddies, thereby weakening the strength of the large eddy, reducing the wind resistance of the flow guiding member 100 itself, and improving the airflow separation of the wheel cavity, thereby realizing the coupling drag reduction function of the flow guiding member 100, the wheel cavity, and the wheel 300.
[0046] It should be noted that N has multiple values, for example, N is a non-integer or an integer. In the embodiments of the present application, N is an integer, so that the processing operation of the inlet 1031 and the outlet 1032 is simple.
[0047] In some embodiments, 4mm≤D1≤20mm, so within this range, the structural strength of the flow guide 100 can be ensured while reducing the resistance of the gas entering the flow channel 103, so that the outlet 1032 can discharge sufficient flow of gas to disperse large eddies into multiple small eddies. When the equivalent diameter of the inlet 1031 is less than 4mm, the flow of gas entering the inlet 1031 will be reduced, and the increased resistance of the gas entering will cause the gas jetted out of the outlet 1032 to be unable to disperse large eddies into multiple small eddies. When the equivalent diameter of the inlet 1031 is greater than 20mm, although sufficient flow of gas can be ensured to enter and the resistance of the gas entering is reduced, the structural strength of the flow guide 100 will be reduced, causing the flow guide 100 to be easily damaged and reducing the service life of the flow guide 100.
[0048] It should be noted that the value of D1 can be 4mm, 4.5mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, etc. Exemplarily, the equivalent diameter of the inlet 1031 can be selected as needed, which is not limited in the present application.
[0049] In some embodiments, 1mm≤D2≤5mm, so within this range, the structural strength of the flow guide 100 can be ensured while reducing the resistance of the gas discharging from the flow channel 103, so that the outlet 1032 can discharge sufficient flow of gas to disperse large eddies into multiple small eddies. When the equivalent diameter of the outlet 1032 is less than 1mm, the flow of gas discharged from the outlet 1032 will be reduced, and the increased resistance of the gas discharging will cause the gas jetted out of the outlet 1032 to be unable to disperse large eddies into multiple small eddies. When the equivalent diameter of the outlet 1032 is greater than 5mm, although sufficient flow of gas can be ensured to be discharged and the resistance of the gas discharging is reduced, the structural strength of the flow guide 100 will be reduced, causing the flow guide 100 to be easily damaged and reducing the service life of the flow guide 100.
[0050] It should be noted that the value of D2 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm or 5mm, etc. Exemplarily, the equivalent diameter of the outlet 1032 can be selected as needed, which is not limited in the present application.
[0051] Reference is made to Figure 2 and Figure 3In some embodiments, the cross-sectional area of the flow channel 103 decreases from the inlet 1031 to the outlet 1032. In this way, the fluid gradually accelerates during the flow process when the cross-sectional area of the flow channel 103 decreases from the inlet 1031 to the outlet 1032. Such accelerated flow helps to reduce the friction loss between the fluid and the wall of the flow channel 103, thereby improving the flow efficiency and jet efficiency. At the same time, the decreasing cross-sectional area can also avoid excessive vortex and turbulence of the fluid in the flow channel 103, further reducing energy loss. The decreasing cross-sectional area of the flow channel 103 helps to form more uniform fluid flow, thereby improving the kinetic performance of the fluid. Such design can also make the fluid reach a higher flow rate and flow volume at the outlet 1032, so as to disperse the large vortex formed by the leeward surface 102 into multiple small vortices, thereby weakening the strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the airflow separation of the wheel cavity, thereby realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the wheel 300.
[0052] In some embodiments, the inlet 1031 is provided in plurality, and the distance between two adjacent inlets 1031 is K1, wherein 2mm≤K1≤10mm. In this way, when the distance between two adjacent inlets 1031 is controlled to be between 2mm and 10mm, it can be ensured that the fluid is uniformly distributed between the plurality of inlets 1031, which helps to avoid excessive concentration or lack of fluid at a certain inlet 1031, thereby improving the overall uniformity of the fluid. When the distance between two adjacent inlets 1031 is controlled to be between 2mm and 10mm, the resistance of the fluid during the flow process can be reduced. When the distance between the inlets 1031 is less than 2mm, the fluid may
[0053] It should be noted that the value of K1 can be 2mm, 3.5mm, 4mm, 4.5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10mm, etc. Exemplarily, the distance between two adjacent inlets 1031 can be selected as needed, which is not limited in the present application.
[0054] Referring to Figure 1 and Figure 2In some embodiments, a plurality of inlets 1031 are provided, a plurality of outlets 1032 are provided, and a plurality of flow channels 103 are provided, the plurality of inlets 1031, the plurality of outlets 1032, and the plurality of flow channels 103 are provided in one-to-one correspondence and are in communication with each other. In this way, part of the airflow can enter the plurality of flow channels 103 from the plurality of inlets 1031 and be discharged from the plurality of outlets 1032 respectively, forming a plurality of jets, and the plurality of jets can simultaneously impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex and reducing the wind resistance of the flow guiding piece 100 itself, while improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guiding piece 100, the wheel cavity, and the wheel 300. The plurality of inlets 1031, outlets 1032, and flow channels 103 can be provided so that when a certain inlet 1031, outlet 1032, or flow channel 103 fails, the other parts can still work normally, thereby improving the effect of the flow guiding piece 100 on reducing wind resistance.
[0055] In some embodiments, a plurality of outlets 1032 are provided, and the spacing between adjacent two outlets 1032 is K2, wherein 1mm≤K2≤5mm. In this way, when the spacing between adjacent two outlets 1032 is controlled to be between 1mm and 5mm, it can be ensured that the fluid is uniformly distributed between the plurality of outlets 1032, which helps to avoid excessive concentration or absence of fluid at a certain outlet 1032, thereby improving the overall uniformity of the fluid. When the spacing between adjacent two outlets 1032 is controlled to be between 1mm and 5mm, the resistance of the fluid during flow can be reduced. When the spacing between the outlets 1032 is less than 1mm, the fluid may
[0056] It should be noted that the value of K2 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm, etc. Exemplarily, the spacing between adjacent two outlets 1032 can be selected as needed, which is not limited in the present application.
[0057] In some embodiments, the area of the flow guide surface 101 is S1, and the total area of the inlet 1031 is S2, wherein 0 < S2≤ 2S1 / 3. In this way, when the total area S2 of the inlet 1031 is controlled to be greater than zero and less than or equal to 2 / 3 of the area S1 of the flow guide surface 101, it can be ensured that sufficient gas flow can impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the flow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the wheel 300. When the total area S2 of the inlet 1031 is greater than 2 / 3 of the area S1 of the flow guide surface 101, the strength of the flow guide 100 may be weak, so that the flow guide 100 is easy to be damaged.
[0058] It should be noted that when the inlet 1031 is provided with one, the total area of the inlet 1031 represents the area of the one inlet 1031, and when the inlet 1031 is provided with multiple, the total area of the inlet 1031 represents the sum of the areas of the multiple inlets 1031. The total area S2 of the inlet 1031 can be 2S1 / 3, 0.5S1, 0.4S1, S1 / 3, 0.3S1, 0.2S1 or 0.1S1, etc. Exemplarily, the present application does not limit this.
[0059] In some embodiments, the area of the leeward surface 102 is S3, and the total area of the outlet 1032 is S4, wherein 0 < S4≤ 2S3 / 3. In this way, when the total area S4 of the outlet 1032 is controlled to be greater than zero and less than or equal to 2 / 3 of the area S3 of the leeward surface 102, it can be ensured that sufficient gas flow can impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the flow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the wheel 300. When the total area S4 of the outlet 1032 is controlled to be greater than zero and less than or equal to 2 / 3 of the area S3 of the leeward surface 102, the strength of the flow guide 100 may be weak, so that the flow guide 100 is easy to be damaged.
[0060] It should be noted that when the outlet 1032 is provided with one, the total area of the outlet 1032 represents the area of the one outlet 1032, and when the outlet 1032 is provided with multiple, the total area of the outlet 1032 represents the sum of the areas of the multiple outlets 1032. The total area S4 of the outlet 1032 can be 2S3 / 3, 0.5S3, 0.4S3, 0.3S3, 0.2S3, 0.2S3 or 0.1S3, etc. Exemplarily, the present application does not limit this.
[0061] In some embodiments, the flow guide surface 101 has a first region 1011 and a second region 1012, the air pressure of the airflow guided by the first region 1011 is higher than the air pressure of the airflow guided by the second region 1012, the inlet 1031 is arranged in the first region 1011, thus, it can ensure that the airflow has enough power and pressure when entering the flow channel 103, so that the flow rate of the gas discharged from the outlet 1032 can impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the vehicle wheel 300.
[0062] In some embodiments, the leeward surface 102 has a third region 1021 and a fourth region 1022, the air pressure of the airflow guided by the third region 1021 is lower than the air pressure of the airflow guided by the fourth region 1022, a plurality of outlets 1032 are arranged in the third region 1021, thus, due to the air pressure of the third region 1021 is lower than that of the fourth region 1022, according to the principle of fluid mechanics, the airflow will naturally flow from the high pressure region to the low pressure region. Therefore, arranging the outlet 1032 in the third region 1021 can more effectively promote the discharge of the airflow from the flow channel 103, avoiding the accumulation of the airflow in the flow channel 103. Since the airflow can be more smoothly discharged through the outlet 1032, it can impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the vehicle wheel 300.
[0063] In addition, the air pressure of the airflow guided by the first region 1011 is higher than the air pressure of the airflow guided by the fourth region 1022, thus, the air pressure of the airflow guided by the third region 1021 can be much lower than the air pressure of the airflow guided by the first region 1011, so that there is a large pressure difference between the inlet 1031 and the outlet 1032, thereby making the gas discharged from the outlet 1032 form a jet, which can impact the large vortex, so that the large vortex is dispersed to form a plurality of small vortices, thereby weakening the action strength of the large vortex, reducing the wind resistance of the flow guide 100 itself, and improving the airflow separation of the wheel cavity, realizing the coupling drag reduction function of the flow guide 100, the wheel cavity and the vehicle wheel 300.
[0064] Referring to Figure 10 , Figure 10 is a structural schematic view of the flow guide installed on a vehicle in the exemplary embodiments of the present disclosure. According to the second aspect of the present disclosure, a vehicle is provided, which comprises the flow guide 100 described above. The vehicle has all the beneficial effects of the flow guide 100 described above, and the present disclosure will not be repeated here.
[0065] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle or a new energy vehicle, and the present disclosure does not make specific limitations.
[0066] Referring to Figure 10 The vehicle includes a front lip 400, a front apron 200, a countersunk bolt 500, a wheel 300, a wheel cover 600, and a flow guide 100 mounted on the front apron 200 and fixedly connected by the countersunk bolt 500. The countersunk bolt can be made of carbon steel material, in line with the GB27 standard, and the thread specification is determined according to the installation port position and size. When the vehicle does not install the flow guide 100, part of the airflow is rolled into the wheel cover 600 after the faraway airflow passes through the front lip 400 and the front apron 200, and part of the airflow impacts the wheel 300 head-on, increasing the vehicle wind resistance. In the present application, the flow guide 100 is installed to reduce the vehicle wind resistance.
[0067] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0068] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.
[0069] The embodiments, implementation manners and related technical features of the present application can be combined, replaced or modified without conflict.
[0070] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application without departing from the technical solution content of the present application, still belongs to the scope of the technical solution of the present application.
Claims
1. A flow guide member for being provided in front of a vehicle wheel, characterized by comprising: The flow guide has a flow guide surface and a leeward surface, the flow guide surface is used for guiding airflow, the leeward surface is arranged opposite to the wheel, a flow channel is arranged in the flow guide, the flow guide surface is provided with an inlet communicating with the flow channel, and the leeward surface is provided with an outlet communicating with the flow channel.
2. The flow guide of claim 1, wherein, The equivalent caliber of the inlet is larger than that of the outlet.
3. The flow guide of claim 2, wherein, The equivalent caliber of the inlet is D1, and the equivalent caliber of the outlet is D2, wherein D1 / D2=N, 1<N≤4.
4. The flow guide of claim 3, wherein, 4mm≤D1≤20mm; and / or 1mm≤D2≤5mm.
5. The flow guide of claim 1, wherein, The shape of the inlet is circular, oval or polygonal; and / or, The shape of the outlet is circular, oval or polygonal.
6. The flow guide of any one of claims 2 to 5, wherein, The cross-sectional area of the flow channel decreases in the direction from the inlet to the outlet.
7. The flow guide of any one of claims 1 to 5, wherein, The inlet is provided with a plurality of inlets, and the spacing between adjacent two inlets is K1, wherein 2mm≤K1≤10mm.
8. The flow guide of any one of claims 1 to 5, wherein, The inlet is provided with a plurality of inlets, the outlet is provided with a plurality of outlets, and the flow channel is provided with a plurality of flow channels, and the plurality of inlets, the plurality of outlets and the plurality of flow channels are one-to-one corresponding and communicating.
9. The flow guide of any one of claims 1 to 5, wherein, The outlet is provided with a plurality of outlets, and the spacing between adjacent two outlets is K2, wherein 1mm≤K2≤5mm.
10. The flow guide of any one of claims 1 to 5, wherein, The area of the flow guide surface is S1, and the total area of the inlet is S2, wherein 0<S2≤2S1 / 3.
11. The flow guide of any one of claims 1 to 5, wherein, The area of the leeward surface is S3, and the total area of the outlet is S4, wherein 0<S4≤2S3 / 3.
12. The flow guide of any one of claims 1 to 5, wherein, The flow guide surface has a first area and a second area, the air pressure of the airflow guided by the first area is higher than that of the airflow guided by the second area, and the inlet is arranged in the first area.
13. The flow guide of any one of claims 1 to 5, wherein, The leeward surface has a third area and a fourth area, the air pressure of the airflow guided by the third area is lower than that of the airflow guided by the fourth area, and a plurality of outlets are arranged in the third area.
14. A vehicle characterized by comprising: The flow guide comprises the flow guide according to any one of claims 1 to 13.