Impeller, seat fan and vehicle seat

Abstract

The utility model discloses an impeller, seat fan and vehicle seat relates to the field of vehicle seat ventilation, wherein the impeller comprises a hub, a plurality of blades and a rear disc, the plurality of blades are arranged on the outer side of the hub and are uniformly distributed along the circumference of the hub, the rear disc is arranged at the bottom of the plurality of blades to support the blades, the rear edge of each blade is swept forward towards the incoming flow direction, and the rear disc is arranged on the outer side of the hub. According to the impeller, the large attack angle is adopted, the rear edge of the impeller is arranged in a sweepforward mode, so that after air passes through the impeller to do work, larger air pressure and flow can be generated, and under the same condition, the axial thickness of the impeller can be made to be smaller; therefore, the ventilation performance with higher efficiency is realized in a limited space. The seat fan comprises a shell, a motor assembly arranged in the shell and the impeller arranged in the shell, and the impeller is adopted as the impeller. The vehicle seat is provided with the seat fan, and the seat fan is adopted as the seat fan.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle seat ventilation, and more specifically, to an impeller, a seat fan, and a vehicle seat. Background Technology

[0002] With the rapid development of the automotive industry, consumers' demands for vehicle seat comfort are constantly increasing, especially the performance of seat ventilation systems, which is gradually becoming one of the important indicators for measuring vehicle quality. As a core component of vehicle seat ventilation systems, multi-blade centrifugal fans play a crucial role in improving seat breathability and reducing temperature. However, as automotive interior designs tend towards lightweighting and compactness, traditional fan technology faces severe challenges, particularly in adapting to limited installation space while maintaining high-efficiency ventilation performance.

[0003] In existing technologies, the industry typically adopts the following solutions to address seat ventilation issues: one is to increase the number of blades to improve airflow, but this often leads to an increase in the overall size of the fan; another is to increase the axial dimension of the fan to improve air pressure and flow, but this further exacerbates the space limitation problem; yet another is to optimize the geometry of the blades or adjust the airflow guidance structure in order to improve ventilation, but these methods still struggle to meet the requirements of efficient ventilation and miniaturization in practical applications.

[0004] In conclusion, how to achieve higher ventilation efficiency within a limited space is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an impeller, a seat fan, and a vehicle seat to achieve higher ventilation efficiency in a limited space, while meeting the design requirements of lightweight and compact vehicle seats.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An impeller includes a hub and a plurality of blades disposed on the outside of the hub and evenly distributed along the circumference of the hub, and a rear plate disposed at the bottom of the plurality of blades to support the blades, wherein the trailing edge of each blade sweeps forward in the direction of the incoming flow, and the angle of attack of each blade is 10°-50°.

[0008] Preferably, the leading edge radius of each blade is 0.1 mm to 0.5 mm.

[0009] Preferably, the curvature of each blade is 15%-35%.

[0010] Preferably, the maximum thickness of each blade is 1.5mm-4.5mm.

[0011] Preferably, the chord length of each blade is 45mm-60mm.

[0012] Preferably, the trailing edge angle of each blade is 5°-25°.

[0013] Preferably, the edge of the rear disc is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are evenly arranged along the circumference of the rear disc.

[0014] Preferably, the surface of each blade is coated with an antistatic coating.

[0015] A seat fan includes a housing, a motor assembly disposed within the housing, and an impeller disposed within the housing, wherein the impeller is an impeller as described in any of the preceding claims.

[0016] A vehicle seat is provided with a seat fan, wherein the seat fan is the aforementioned type of seat fan.

[0017] The impeller, seat fan, and vehicle seat provided by this utility model have an impeller with a large angle of attack and a forward-swept trailing edge, which allows the air to generate greater air pressure and flow rate after passing through the impeller and doing work. As a result, under the same conditions, the axial thickness of the impeller can be made thinner, thereby achieving higher ventilation efficiency in a limited space.

[0018] The further solutions provided in this application can also achieve at least one of the following beneficial technical effects:

[0019] By incorporating multiple reinforcing ribs along the edge of the rear disc, evenly distributed circumferentially, the overall structural strength of the impeller is effectively enhanced. This design ensures the stability and durability of the impeller during high-speed rotation, reducing the risk of failure due to vibration or fatigue.

[0020] By coating the blade surface with an antistatic coating, the impeller also possesses excellent antistatic properties. This design helps prevent damage to electronic equipment or safety hazards caused by static electricity buildup, which is especially important in components such as vehicle seats that frequently come into contact with passengers. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a front view of the overall impeller structure in this embodiment;

[0023] Figure 2 This is a side view of the overall impeller structure in this embodiment;

[0024] Figure 3 This is a schematic diagram of the blade structure in this embodiment.

[0025] Figures 1-3 In the accompanying drawings, the reference numerals include:

[0026] 1. Wheel hub; 2. Blade; 3. Rear disc. Detailed Implementation

[0027] 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.

[0028] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. Embodiments of this application disclose an impeller, a seat fan, and a vehicle seat.

[0029] The core of this utility model is to provide an impeller, a seat fan, and a vehicle seat.

[0030] Please refer to Figures 1 to 3 .

[0031] like Figure 1 and Figure 2 As shown, the impeller provided by this utility model includes a hub 1, a plurality of blades 2 disposed on the outside of the hub 1 and evenly distributed around the circumference of the hub 1, and a rear plate 3. The rear plate 3 is disposed at the bottom of the plurality of blades 2 to support the blades 2, and the trailing edge of each blade 2 is swept forward in the direction of the incoming flow (e.g., Figure 3 As shown), the angle of attack of each blade 2 is 10°-50°.

[0032] Specifically, in this application, the angle of attack of blade 2 ranges from 10° to 50°, preferably 39°48′, i.e., a large angle of attack is adopted. This large angle of attack allows blade 2 to better capture and guide airflow. When air flows through blade 2, it is more effectively accelerated and pressurized, thereby improving overall ventilation performance. This allows the impeller to generate greater wind pressure and flow rate during rotation. Simultaneously, the trailing edge of each blade 2 sweeps forward towards the incoming flow direction, effectively enhancing the guiding effect of blade 2 on the air. When air flows through blade 2, the forward-sweeping design of the trailing edge allows the airflow to flow more smoothly along the surface of blade 2, reducing the generation of eddies and turbulence, thereby further improving ventilation efficiency. Furthermore, it helps reduce the blade's resistance to airflow. In the prior art, the trailing edge of blade 2 is often perpendicular to the incoming flow direction or forms a certain obtuse angle, which leads to greater resistance when air flows through blade 2, affecting ventilation performance. The forward-sweeping design of the trailing edge in this application effectively reduces this resistance, allowing air to pass through the blade more easily, further improving the impeller's ventilation efficiency.

[0033] The impeller described above, with its large angle of attack and forward-swept trailing edge, generates greater air pressure and flow rate after air passes through it and does work. This allows for a thinner axial thickness of the impeller under the same conditions, thus achieving higher ventilation efficiency within a limited space.

[0034] The impeller provided by this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0035] Based on any of the above embodiments, refer to Figure 3 The leading edge radius of each blade 2 is 0.1mm-0.5mm, preferably 0.3mm.

[0036] Specifically, a smaller leading edge radius reduces air resistance as it flows through blade 2, allowing air to pass through more smoothly and thus improving ventilation efficiency. At the same time, optimizing the leading edge radius also helps improve the blade's strength and durability, ensuring the impeller maintains stable performance during long-term use.

[0037] Based on any of the above embodiments, refer to Figure 3 The maximum thickness of each blade 2 is 1.5mm-4.5mm, preferably 2.37mm.

[0038] Specifically, while thicker blades provide stronger structural support, they also increase the overall weight and energy consumption of the impeller. Therefore, in this embodiment, the thickness is set in the range of 1.5mm-4.5mm, achieving lightweighting while ensuring the strength of the blades, which helps to improve the ventilation efficiency of the impeller and reduce energy consumption.

[0039] Based on any of the above embodiments, refer to Figure 3 The curvature of each blade 2 is 15%-35%, preferably 22.3%.

[0040] Specifically, adjusting the blade curvature allows for optimal airflow as it passes through blade 2, reducing eddies and drag losses, and further improving ventilation efficiency.

[0041] Based on any of the above embodiments, refer to Figure 3 The chord length of each blade 2 is 45mm-60mm, preferably 53.3mm.

[0042] Specifically, the chord length design of the blades determines the amount of air the blades can capture during rotation. A longer chord length allows the blades to capture more air during rotation, thereby increasing ventilation volume. However, an excessively long chord length also increases the weight and drag of the blades, affecting ventilation efficiency. Therefore, in this embodiment, the chord length of blade 2 is controlled within the range of 45mm-60mm, achieving weight reduction while ensuring ventilation volume, which helps improve the ventilation efficiency of the impeller.

[0043] Based on any of the above embodiments, refer to Figure 3 The trailing edge angle of each blade 2 is 5°-25°, preferably 14°42′.

[0044] Specifically, the design of the trailing edge angle plays a crucial role in reducing vortex losses at the tail of blade 2 and improving airflow stability. By optimizing the size and shape of the trailing edge angle, air can flow more smoothly after passing through blade 2, reducing vortex and drag losses and further improving ventilation efficiency. A trailing edge angle of 5°-25° ensures optimal airflow after passing through blade 2.

[0045] In a specific embodiment provided in this application, the rear disc 3 is provided with a plurality of reinforcing ribs on its edge, and the plurality of reinforcing ribs are evenly arranged along the circumference of the rear disc 3.

[0046] Specifically, the reinforcing ribs enhance the structural strength of the rear disc, preventing deformation or damage caused by high-speed rotation. Simultaneously, the even distribution of the reinforcing ribs ensures the rear disc remains balanced and stable during rotation, further improving the impeller's ventilation efficiency and safety.

[0047] Optionally, the reinforcing ribs can be made of lightweight, high-strength materials such as high-strength steel, aluminum alloy, or carbon fiber. High-strength steel has high strength and rigidity, capable of withstanding large loads and torques, making it suitable for applications requiring high backplate strength. Aluminum alloys offer advantages such as light weight, high strength, and corrosion resistance, reducing the overall weight of the impeller while maintaining high load-bearing capacity. Carbon fiber possesses extremely high strength and rigidity while being very lightweight, making it an ideal choice for those seeking high performance and lightweight design. Selecting the appropriate reinforcing rib material based on actual needs can further improve the structural strength and stability of the impeller, while optimizing its weight and performance.

[0048] It should be noted that the number, shape, and size of the reinforcing ribs can be designed and adjusted according to actual needs. For example, when a larger load or higher speed is required, the number of reinforcing ribs can be increased or a thicker shape can be used to improve the load-bearing capacity of the rear disc; when it is necessary to optimize aerodynamic performance, a streamlined shape of the reinforcing ribs can be used to reduce obstruction to airflow. In addition, the connection method between the reinforcing ribs and the rear disc must also ensure the strength and stability of the connection.

[0049] In one specific embodiment provided in this application, the surface of each blade 2 is coated with an antistatic coating.

[0050] Specifically, the application of an anti-static coating can prevent damage to electronic equipment or safety hazards caused by static electricity buildup. During the use of vehicle seat fan impellers, static electricity may be generated due to factors such as airflow and friction. Applying an anti-static coating can effectively prevent static electricity buildup, protecting the safe and stable operation of electronic equipment.

[0051] Optionally, the antistatic coating material can be a composite material with excellent conductivity and wear resistance. For example, a polymer coating with added conductive filler can be used. This coating not only has good conductivity and can effectively release static electricity, but also has high wear resistance and corrosion resistance, and can maintain stable performance during long-term use. In addition, the thickness of the antistatic coating can also be adjusted according to actual needs to ensure that it can effectively prevent static electricity accumulation without having an excessive impact on the aerodynamic performance of blade 2.

[0052] It should be noted that the blades 2 and the rear disk 3 can be manufactured using a one-piece molding method. Specifically, the one-piece molding method ensures a more secure and stable connection between the blades 2 and the rear disk 3, preventing problems such as loosening or detachment during use. At the same time, the one-piece molding method also helps to improve the overall strength and durability of the impeller, ensuring that it maintains stable performance during long-term use.

[0053] It should also be noted that the material of blade 2 can be selected from aluminum alloy, engineering plastics, or composite materials. Specifically, aluminum alloys have advantages such as being lightweight, high-strength, and corrosion-resistant, making them suitable for applications with high requirements for weight and strength; engineering plastics have advantages such as low cost, easy processing, and wear resistance, making them suitable for applications with high requirements for cost and processing; composite materials can combine the advantages of multiple materials, possessing higher strength and lighter weight, making them suitable for applications with strict requirements for both performance and weight. Selecting the appropriate material according to actual needs can further improve the impeller's performance and service life.

[0054] Based on this, this application also discloses a seat fan, including a housing, a motor assembly disposed within the housing, and an impeller disposed within the housing, wherein the impeller is the aforementioned impeller, and the other components of the seat fan are conventional components, which will not be described in detail here.

[0055] This application also discloses a vehicle seat equipped with a seat fan, wherein the seat fan is the aforementioned seat fan, and the other components of the vehicle seat are conventional components, which will not be described in detail here.

[0056] It should also be noted that the above-mentioned application scenarios of seat fans and vehicle seats are not all applicable scenarios disclosed in this application for impellers. The impellers disclosed in this application can also be applied to scenarios such as air conditioning, vehicle headlight cooling, PM2.5 monitoring, and industrial refrigeration systems, such as computer heat dissipation, industrial ventilation, and energy storage heat dissipation.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The impeller, seat fan, and vehicle seat provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. An impeller comprising a hub (1) and a plurality of blades (2) disposed on the outer side of the hub (1) and uniformly distributed circumferentially along the hub (1), characterized in that, It also includes a rear plate (3), which is disposed at the bottom of the plurality of blades (2) to support the blades (2). The trailing edge of each blade (2) sweeps forward in the direction of the incoming flow, and the angle of attack of each blade (2) is 10°-50°.

2. The impeller according to claim 1, characterized in that, The leading edge radius of each blade (2) is 0.1 mm to 0.5 mm.

3. An impeller according to claim 1, characterized in that, The maximum thickness of each blade (2) is 1.5 mm to 4.5 mm.

4. An impeller according to claim 1, characterized in that, The curvature of each blade (2) is 15%-35%.

5. An impeller according to claim 1, characterized in that, The chord length of each blade (2) is 45mm-60mm.

6. An impeller according to claim 1, characterized in that, The trailing edge angle of each blade (2) is 5°-25°.

7. An impeller according to any one of claims 1-6, characterized in that, The rear disc (3) is provided with a plurality of reinforcing ribs on its edge, and the plurality of reinforcing ribs are evenly arranged along the circumference of the rear disc (3).

8. An impeller according to any one of claims 1-6, characterized in that, Each blade (2) has an antistatic coating on its surface.

9. A seat fan, comprising a housing, a motor assembly disposed within the housing, and an impeller disposed within the housing, characterized in that, The impeller is the impeller as described in any one of claims 1-8.

10. A vehicle seat equipped with a seat fan, characterized in that, The seat fan is the same as the seat fan described in claim 9.

Images