Fan with air purification function and fan lamp comprising same

Abstract

The utility model relates to the technical field of photocatalysis, and particularly provides a fan with an air purification function and a fan lamp comprising the fan, the fan comprises a motor, a transmission shaft and a fan blade structure, the fan blade structure comprises an annular plate, an impeller and a circular bottom plate, the transmission shaft is arranged in the center of the bottom of the motor, and the transmission shaft is fixedly connected to the center area of the circular bottom plate; the impeller is vertically arranged on one side, close to the motor, of the circular bottom plate; an annular plate is arranged on one side, away from the circular bottom plate, of the impeller; an ultraviolet lamp is fixedly arranged on one side, close to the circular bottom plate, of the annular plate, and photocatalyst layers are arranged on the surface of the impeller and the surface of one side, close to the impeller, of the circular bottom plate. The fan lamp comprises the fan with the air purification function. The air purifying device is arranged on the surface of the fan, integration of air flowing and purifying functions is achieved, meanwhile, the size of the fan is not changed, the air flow efficiency is not affected, and good application prospects and market value are achieved.

Description

Technical Field

[0001] This application relates to the field of photocatalysis technology, and more specifically, to a fan with air purification function and a fan light including the same. Background Technology

[0002] Indoor air pollutants, such as volatile organic compounds (VOCs), formaldehyde, and benzene, pose a potential threat to human health. To address this issue, air purification technologies have been widely adopted, with photocatalysis technology gaining popularity due to its high efficiency and environmental friendliness. Photocatalysis utilizes light energy to activate photocatalysts, enabling chemical reactions under mild conditions to effectively degrade organic pollutants in the air, thereby significantly improving air quality.

[0003] Currently, common air purification products on the market mainly include air purifiers and fans with air purification functions. However, these products still have some shortcomings in actual use. For example, traditional air purifiers are usually large, take up a lot of space, and are inconvenient to move, making it difficult to meet users' needs for flexibility and portability. While existing air purifying fans combine the functions of a fan and air purification, their design usually places the photocatalyst module inside the fan casing, resulting in an increased overall product size. This not only limits their application scenarios but also affects their aesthetics. In addition, this design may also affect the fan's airflow efficiency, reducing the air purification effect.

[0004] In summary, because the photocatalyst module of existing air purifying fans is placed inside the fan casing, existing air purifying fans are bulky and may affect airflow efficiency and purification effect. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a fan with air purification function and a fan light including the same, in order to solve the problem that the photocatalyst module of existing air purifier fans is placed inside the fan housing, resulting in a large fan size and potentially affecting airflow efficiency and purification effect.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This application provides a fan with air purification function, which includes a motor, a drive shaft, a fan blade structure, an ultraviolet lamp, and a photocatalytic layer. The fan blade structure includes an annular plate, an impeller, and a circular base plate. The drive shaft is located at the center of the bottom of the motor and is fixedly connected to the central area of ​​the circular base plate. The impeller is vertically mounted on the circular base plate near the motor, and the annular plate is located on the side of the impeller away from the circular base plate. An ultraviolet lamp is fixedly mounted on the annular plate near the circular base plate, and a photocatalytic layer is provided on the surface of the impeller and the surface of the circular base plate near the impeller.

[0008] In this application, the fan guides airflow by rotating the fan blade structure via a motor, generating airflow. Air enters from the inner ring of the annular plate and flows out between the impeller blades as the fan rotates. An ultraviolet lamp is positioned on the side of the annular plate near the impeller, irradiating the photocatalyst layer on the surface of the fan blade structure downwards, stimulating a photocatalytic reaction to decompose harmful substances in the air and achieve air purification. Placing the photocatalyst layer on the impeller surface and the surface of the circular base plate near the impeller increases the contact area between the photocatalyst layer and the air, allowing for more thorough contact between the air and the photocatalyst layer during airflow, thereby improving purification efficiency. It also maximizes the use of existing structural space, avoids obstructing airflow, ensures smooth airflow, and maintains the fan's lightweight and aesthetic appeal. As the fan continues to operate, air continuously enters, is purified, and is expelled, achieving a cyclical purification effect. This application combines air purification functionality with the fan's inherent function by placing the ultraviolet lamp and photocatalyst layer on the inner surface of the fan blade structure, without increasing the overall size of the product.

[0009] Furthermore, the ultraviolet lamp is positioned near the inner ring of the annular plate. This allows for concentrated and efficient irradiation of the photocatalyst layer, improving the efficiency of the photocatalytic reaction; the overall structure is also more compact, reducing ultraviolet light scattering and waste, and lowering energy consumption.

[0010] Furthermore, the axis of the annular plate is coaxial with the axis of the circular base plate.

[0011] Furthermore, the outer ring diameter of the annular plate is the same as the diameter of the circular base plate.

[0012] The coaxiality and identical diameter of the axes ensure a more stable connection between the annular plate and the circular base plate, enhancing the overall structural stability, reducing vibration and noise caused by asymmetry, and extending the fan's lifespan. Simultaneously, it avoids unnecessary structural protrusions, further saving space and making it more suitable for use in confined spaces.

[0013] Furthermore, the radius of the outer ring of the annular plate is 2-3 times the width of the annular plate. This ensures better air circulation.

[0014] Furthermore, the annular plate is shaped like the side of a frustum, with an angle of 10°-30° between the annular plate and the circular base plate. This angle optimizes the airflow path, making the airflow smoother after entering through the annular plate, reducing airflow resistance and improving fan efficiency. It also ensures that the UV lamp shines obliquely downwards onto the photocatalyst layer, guaranteeing sufficient UV irradiation range to fully cover the photocatalyst layer, improving the efficiency of the photocatalytic reaction, while preventing direct UV leakage and ensuring safe use.

[0015] Furthermore, the impeller comprises multiple blades arranged radially along the center of a circular base plate, with the projection of the blades onto the circular base plate forming an arc-shaped area. The arc-shaped profile of the blades reduces airflow resistance and facilitates air circulation.

[0016] Furthermore, the ultraviolet lamp emits ultraviolet light with a wavelength of 360-380nm. This wavelength range can efficiently excite the photocatalytic reaction of the photocatalyst layer while avoiding the generation of harmful ozone, ensuring a safe and efficient air purification process.

[0017] Furthermore, the photocatalyst layer material is composed of nano-sized titanium dioxide particles. These adhere to the surface of the fan blade structure without occupying additional space or affecting airflow.

[0018] This application also provides a fan light with air purification function. The fan light includes the aforementioned fan, adding air purification functionality without altering the original fan light structure, simply by replacing the fan. This simplifies the integration of air purification functionality without increasing product size, making it easy to use. This fan is suitable for various products and scenarios, demonstrating high practicality and application prospects.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) In this application, the ultraviolet lamp and photocatalyst layer are set inside the fan blade structure and are tightly integrated with the fan body, thus achieving the integration of air purification function without increasing the overall volume of the product; and by coating the photocatalyst particles on the inner surface of the fan blade to form a photocatalyst layer, the obstruction of airflow by the photocatalyst filter in the traditional design is avoided, which saves space and maintains the efficient airflow output of the fan.

[0021] (2) By setting ultraviolet lamps on the ring plate, this application increases the irradiation area of ​​ultraviolet light, so that more photocatalyst particles can be activated, thereby significantly improving the efficiency of photocatalytic reaction and enabling more efficient degradation of organic pollutants in the air, such as volatile organic compounds (VOCs), formaldehyde, benzene, etc.

[0022] (3) The fan structure design of this application is flexible and can be used not only with ordinary fans, but also with a variety of everyday household products such as fan lights. This allows for the integration of air purification function with other functions without increasing the product size, thus improving the product's usability and making it convenient for users to use daily.

[0023] In summary, this invention, by optimizing the layout design of the ultraviolet lamp and photocatalyst layer, improves air purification efficiency while solving the problems of bulky product size and low airflow efficiency in existing technologies, and has broad application prospects and market value. Attached Figure Description

[0024] Figure 1 A cross-sectional schematic diagram of a fan with air purification function provided by this utility model;

[0025] Figure 2 A top view schematic diagram of a fan with air purification function provided by this utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of a fan light with air purification function provided by this utility model.

[0027] Icons: 1-Motor; 2-Drive shaft; 3-Fan blade structure; 31-Annular plate; 32-Impeller; 33-Circular base plate; 4-Ultraviolet lamp; 5-Photocatalyst layer; 6-Outer shell; 7-Ceiling; 8-Lighting device. Detailed Implementation

[0028] To make the implementation process of this utility model clearer, a detailed description will be provided below in conjunction with the accompanying drawings.

[0029] Example 1

[0030] This utility model provides a fan with air purification function, such as Figure 1 As shown, the fan includes a motor 1, a drive shaft 2, a fan blade structure 3, an ultraviolet lamp 4, and a photocatalyst layer 5. The fan blade structure 3 includes an annular plate 31, an impeller 32, and a circular base plate 33. The drive shaft 2 is located at the center of the bottom of the motor 1 and is fixedly connected to the central area of ​​the circular base plate 33. The impeller 32 is vertically fixed on the circular base plate 33 on the side near the motor 1, and the annular plate 31 is fixedly located on the side of the impeller 32 away from the circular base plate 33. An ultraviolet lamp 4 is fixedly located on the side of the annular plate 31 near the circular base plate 33. A photocatalyst layer 5 is provided on the surface of the impeller 32 and the surface of the circular base plate 33 near the impeller 32.

[0031] The fan is fixedly connected to the fan blade structure 3 via a drive shaft 2 located at the bottom of the motor 1, thereby causing the motor 1 to drive the fan blade structure 3 to rotate and generate airflow. Air enters from the inner ring of the annular plate 31, which serves as the air inlet. The air entering the fan comes into contact with the photocatalyst layer 5, which undergoes a photocatalytic reaction after being irradiated by the ultraviolet lamp 4 located on the annular plate 31, purifying the air inside the fan and removing pollutants. The purified air flows out from the blades of the impeller 32 as the fan rotates, with the gaps between the blades serving as the air outlets.

[0032] The ultraviolet lamps 4 inside the fan are arranged in a ring on the annular plate 31, near the circular base plate 33 and close to the inner ring. This expands the irradiation range and more efficiently irradiates the photocatalyst layer 5, improving the efficiency of the photocatalytic reaction. Specifically, the ultraviolet lamps 4 can be arranged continuously around the inner ring of the annular plate 31, or they can be arranged in a discontinuous ring, for example, multiple ultraviolet lamp beads are distributed at intervals near the inner ring of the annular plate 31. When the ultraviolet lamps 4 are arranged in a continuous ring, uniform irradiation of the photocatalyst layer 5 can be achieved; when the ultraviolet lamps 4 are arranged in a discontinuous ring, the distribution density and position of the ultraviolet lamps 4 can be adjusted to achieve localized enhanced irradiation of the photocatalyst layer 5, thereby adapting to different purification needs. Those skilled in the art can choose a continuous or discontinuous ring arrangement according to actual needs, and adjust the distribution density and position of the ultraviolet lamps 4 to achieve the best irradiation effect on the photocatalyst layer 5. The ultraviolet light emitted by the ultraviolet lamps 4 has a wavelength of 360-380nm, preferably 365nm. 365nm wavelength ultraviolet light can efficiently excite the photocatalytic reaction of the photocatalyst layer 5, improving the efficiency of the photocatalytic reaction while avoiding the generation of harmful ozone, ensuring a safe and efficient air purification process. The photocatalyst layer 5 is disposed on the surface of the impeller 32 and the surface of the circular base plate 33 near the impeller 32. The material of the photocatalyst layer 5 is nano-sized titanium dioxide particles, which have a high specific surface area and excellent photocatalytic performance, and can efficiently degrade organic pollutants in the air. This material is adhered to the surface of the impeller 32 and the surface of the circular base plate 33 near the impeller 32 by spraying or spin coating to form the photocatalyst layer 5, ensuring the uniformity and stability of the photocatalyst layer 5. The photocatalyst layer 5 does not occupy additional space and does not affect the fan's air intake and exhaust.

[0033] Furthermore, the axis of the annular plate 31 is coaxial with the axis of the circular base plate 33. This design ensures structural symmetry, reduces vibration and noise caused by asymmetry, and thus improves the stability and operating efficiency of the fan. In addition, the outer ring diameter of the annular plate 31 is the same as the diameter of the circular base plate 33, and the outer ring radius of the annular plate 31 is 2-3 times its ring width. Specifically, if the outer ring diameter of the annular plate 31 is 10-60cm, the outer ring radius of the annular plate 31 is 5-30cm, and the ring width of the annular plate 31 is 2-15cm. This dimensional design is based on a comprehensive consideration of practicality, structural stability, and airflow efficiency. It avoids unnecessary structural protrusions and material waste, enhances the overall structural stability, extends the fan's lifespan, and ensures that the fan can provide sufficient airflow to meet the needs of daily use in homes, offices, and other similar environments.

[0034] Furthermore, the annular plate 31 is shaped like the side of a frustum, with an angle of 10°-30° between the annular plate 31 and the circular base plate 33. This angle design achieves an optimal balance between the irradiation range of the ultraviolet lamp 4 and the airflow efficiency. An angle that is too small would limit the irradiation range of the ultraviolet lamp 4 and reduce the photocatalytic reaction efficiency, while an angle that is too large would cause airflow turbulence and increase resistance. The 10°-30° design not only optimizes the airflow path, making the airflow smoother and more even, but also increases the irradiation area of ​​the ultraviolet lamp 4, allowing more photocatalyst particles to be activated, thereby improving air purification efficiency. The cross-section of the annular plate 31, shaped like the side of a frustum, can be rectangular or curved. Preferably, it is curved, with the arc convex towards one side of the circular base plate 33, further optimizing airflow and the irradiation range of ultraviolet light, making the airflow more uniform.

[0035] Furthermore, such as Figure 2 The diagram illustrates the positional relationship between the fan blade structure 3, the ultraviolet lamp 4, and the photocatalyst layer 5. The impeller 32 comprises multiple blades arranged radially along the center of a circular base plate 33, with the blades projecting onto the base plate as an arc-shaped area. The number of blades in the impeller 32 can be flexibly adjusted according to the fan size, typically ranging from 3 to 8; too many or too few blades will affect the fan's wind speed and efficiency. The radial arrangement of the blades along the center of the circular base plate 33 not only makes the airflow more uniform and improves the stability of the wind speed but also ensures the uniform distribution of the photocatalyst layer 5 coated on the surface of the impeller 32. This helps the photocatalyst layer 5 to fully receive the irradiation of the ultraviolet lamp 4, thereby improving the air purification effect. Simultaneously, the balanced blade arrangement reduces vibration during fan operation, improving the stability and lifespan of the equipment. The arc-shaped blades of the impeller 32 reduce airflow resistance and facilitate air circulation. The arc-shaped projection is located within the area projected by the annular plate 31 onto the circular base plate 33, and the width of the annular region formed by the radial arc-shaped regions is smaller than the width of the annular plate 31, such as... Figure 2 As shown. This design not only facilitates the placement of the ultraviolet lamp 4 near the inner ring of the annular plate 31, but also ensures that the length of the impeller blades 32 does not affect the airflow efficiency, thereby optimizing the overall performance of the fan. The height of the vertical side of the impeller 32 near the center area is 5-15cm. The height of the impeller 32 is determined according to the diameter of the fan base plate 33, and should not be too high to avoid problems such as increased fan size and increased airflow resistance caused by an excessively high impeller 32. This design optimizes airflow efficiency while ensuring the structural stability of the impeller 32, enabling the fan to achieve efficient air purification and air delivery functions while maintaining compactness and practicality.

[0036] Example 2

[0037] This utility model also provides a fan light with air purification function, such as Figure 3As shown, the fan light includes a housing 6, a ceiling 7, a lighting device 8, and the aforementioned fan. The housing 6 connects the ceiling 7 and the lighting device 8. The motor 1 is housed within the ceiling 7 and is connected to the fan blade structure 3 via a drive shaft 2. The ceiling 7 fixes the fan light to the ceiling. This design integrates a fan with air purification functionality into the fan light, eliminating the need to alter the original overall structure of the fan light. The air purification function is added simply by replacing the fan. Since the fan itself integrates an ultraviolet lamp 4 and a photocatalyst layer 5, no additional components are required, avoiding the problem of increased size due to added functionality and ensuring that the appearance and user experience of the fan light remain unaffected.

[0038] The material of the fan blade structure 3 can be metal, plastic, resin, etc., and can be selected according to different usage scenarios and cost requirements; the central area of ​​the circular base plate 33 is provided with the installation interface of the drive shaft 2. The fan blade structure 3 is fixedly connected to the drive shaft 2 by screws and nuts and fixed to the motor 1 to achieve rotation. This connection method ensures the stability and disassembly of the structure, and facilitates maintenance and replacement.

[0039] When the fan light is working, the rotation of the fan generates airflow. Specifically, motor 1 drives the drive shaft 2 and fan blade structure 3 to rotate. Under the action of centrifugal force, the gas is thrown outwards. The pressure between the blades of impeller 32 is lower than the pressure above the annular plate 31, so the fan draws air in from above. When its air purification function is working, air enters the fan blade structure 3 from the top air inlet. The ultraviolet lamp 4 emits ultraviolet light to irradiate the photocatalyst layer 5 inside the fan blade structure 3, stimulating a photocatalytic reaction, thereby purifying the air inside the fan. The purified air is then discharged from the fan from the side air outlet under the action of centrifugal force, forming an annular airflow. Through the airflow guide plate in the fan light housing 6, the gas flows downwards from the gap between the housing 6 and the lighting device 8, repeating the cycle to achieve the purpose of purifying the air in the entire area through air circulation.

[0040] The fan light also includes a power supply, which connects to the motor 1, the ultraviolet lamp 4, and the lighting device 8, and is used to control the operation of the fan, the ultraviolet lamp 4, and the lighting strip. The operating status of the fan light can be controlled individually according to the user's needs. The user can choose to use only the fan function, the air purification function, or the lighting function, or activate both the air purification function and the lighting function simultaneously, to meet the usage needs in different scenarios.

[0041] In summary, this utility model provides a fan with air purification function and a fan light including the fan. The fan achieves integrated air purification function without increasing the overall size and has good application prospects.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fan with air purification function, comprising a motor, a transmission shaft and a fan blade structure, characterized in that: The fan structure comprises a ring plate, an impeller, and a circular bottom plate, a transmission shaft is arranged at the center of the motor bottom, the transmission shaft is fixedly connected to the center area of the circular bottom plate, the impeller is vertically arranged on the circular bottom plate close to the motor side, the impeller is away from the circular bottom plate side and is provided with the ring plate, an ultraviolet lamp is fixedly arranged on the ring plate close to the circular bottom plate side, and a photocatalyst layer is arranged on the surface of the impeller and the surface of the circular bottom plate close to the impeller side.

2. The fan with air purification function according to claim 1, characterized in that: The ultraviolet lamp is arranged on the ring plate close to the inner ring.

3. The fan with air purification function according to claim 2, characterized in that: The axis of the ring plate is coaxial with the axis of the circular bottom plate.

4. The fan with air purification function according to claim 3, characterized in that: The outer ring diameter of the ring plate is the same as the diameter of the circular bottom plate.

5. The fan with air purification function according to claim 4, characterized in that: The outer ring radius of the ring plate is 2-3 times the ring width of the ring plate.

6. The fan with air purification function according to claim 5, characterized in that: The shape of the ring plate is a circular truncated cone side, and the included angle between the ring plate and the circular bottom plate is 10°-30°.

7. The fan with air purification function according to claim 6, characterized in that: The impeller comprises a plurality of blades, the blades are radially arranged along the center of the circular bottom plate, and the projection of the blades on the circular bottom plate is an arc-shaped area.

8. The fan with air purification function according to claim 1, characterized in that: The wavelength of the ultraviolet light emitted by the ultraviolet lamp is 360-380 nm.

9. The fan with air purification function according to claim 1, characterized in that: The material of the photocatalyst layer is a nano-level titanium dioxide particle.

10. A fan lamp with air purification function, characterized in that: The fan lamp comprises the fan according to any one of claims 1-9.

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