A bladeless fan light

Abstract

This utility model discloses a bladeless fan light, including a lamp body with a fan section and an illumination section. The fan section includes an upper housing, a motor, and a fan wheel. The rotating shaft of the motor is fixedly connected to the center of the fan wheel. The fan wheel has several blades, and the tips of the blades have a serrated structure. The illumination section includes a lower housing and a light source plate. The light source plate is located in the center of the lower housing, and the edge of the lower housing has several air outlets that communicate with the air duct of the fan wheel. The serrated structure divides the smooth, large edge into many small, discontinuous edges. When the airflow passes through these small serrations, the size of the generated vortices becomes smaller, the frequency of vortex shedding increases, and the randomness of vortex shedding increases. This disperses the "roaring" noise, which was originally concentrated in the lower frequency band and is relatively sensitive to the human ear, to a wider and higher frequency spectrum, significantly reducing the overall perceived noise level and making the sound smoother, quieter, or softer.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, specifically relating to a bladeless fan lamp. Background Technology

[0002] Bladeless fan lights are innovative home products that combine the functions of bladeless fans and lighting. They provide the illumination of traditional chandeliers while also offering cool airflow through bladeless fan technology. Air is drawn in by a hidden turbine fan and ejected at high speed through a ring-shaped or slit-shaped air outlet, creating a stable airflow. Without exposed fan blades, they are safer and easier to clean. Existing bladeless fan lights, especially in high-volume mode, can produce noticeable wind noise and mechanical vibration, which may cause low-frequency humming or high-frequency airflow noise that can disturb sleep. Utility Model Content

[0003] Solve the technical problem of excessive noise in existing bladeless fan lights.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a bladeless fan light, comprising a lamp body, which includes a fan section and an illumination section. The fan section includes an upper housing, a motor, and a fan wheel. The rotating shaft of the motor is fixedly connected to the center of the fan wheel. The upper housing is disposed on the upper surface of the fan wheel. An opening is provided in the center of the upper housing and the fan wheel. The fan wheel has an upper wheel body, a lower wheel body, and several blades. The upper wheel body and the lower wheel body are connected by several blades, forming several air ducts between the upper wheel body and the lower wheel body. The blades in the opening have a serrated structure at their tops. The illumination section includes a lower housing and a light source plate. The light source plate is disposed in the center of the lower housing. Several air outlets are provided along the edge of the lower housing, and the air outlets communicate with the air ducts of the fan wheel.

[0005] The main advantages of this invention are as follows: the bladeless fan controls the rotation of the impeller, and the airflow enters the impeller from the air inlet. The air duct between the blades sends the airflow to the air outlet. The serrated structure divides the smooth large edge into many small, discontinuous edges. When the airflow passes through these small serrations, the size of the generated vortex becomes smaller, the frequency of vortex shedding increases, and the randomness of vortex shedding increases. The "roaring" noise, which was originally concentrated in the lower frequency band and is relatively sensitive to the human ear, is dispersed to a wider and higher frequency spectrum. Therefore, the overall perceived noise level is significantly reduced, and the sound sounds more stable, quieter, or softer. Attached Figure Description

[0006] Figure 1 This is a perspective view of the present utility model;

[0007] Figure 2 This is a perspective view of the present utility model;

[0008] Figure 3 This is an exploded view of the present invention;

[0009] Figure 4 This is an exploded view of the present invention;

[0010] Figure 5 This is a cross-sectional view of the present invention;

[0011] Figure 6 This is a schematic diagram of the wind turbine structure of this utility model;

[0012] Figure 7 This is a schematic diagram of the circular structure of the lamp body of this utility model. Detailed Implementation

[0013] like Figures 1 to 7 As shown, a bladeless fan light includes a lamp body 10, which has a fan section 20 and an illumination section 30. The illumination section 30 is located at the bottom end of the fan section 20. The fan section 20 includes an upper housing 21, a motor 22, and a fan wheel 23. The rotation shaft of the motor 22 is fixedly connected to the center of the fan wheel 23. The upper housing 21 is located on the upper surface of the fan wheel 23. An opening is provided in the center of the upper housing 21 and the fan wheel 23. The fan wheel 23 has an upper wheel body 231, a lower wheel body 232, and a plurality of blades 233. The upper wheel body 231 and the lower wheel body 232 are connected together. The upper wheel body 231 and the lower wheel body 232 are connected by several blades 233, forming several air ducts 234 between them. One end of the blade 233 is flush with the upper wheel body 231 and the lower wheel body 232, and the other end of the blade 233 extends into the opening. The top of the blade 233 in the opening is provided with a serrated structure 235. The lighting part 30 includes a lower housing 31 and a light source plate 32. The light source plate 32 is located in the center of the lower housing 31. Several air outlets 33 are provided on the edge of the lower housing 31. The air outlets 33 are interconnected with the air ducts 234 of the impeller 23.

[0014] The blade 233 has multiple serrated structures 235 on its upper end. When the blade 233 rotates, it disperses the airflow from the large vortex into multiple air ducts 234, causing the noise frequency to shift from the mid-high frequency (1-5kHz) that the human ear is sensitive to to a higher frequency range (greater than 8kHz). By utilizing the characteristic that the human ear is less sensitive to high frequencies, the subjective noise perception is reduced, making the operation closer to the white noise of natural wind.

[0015] The serrated structure 235 of blade 233 can reduce turbulent energy loss at the blade tip and guide the airflow to fit more closely to the duct. Under the same motor power, the serrated structure of the blade can increase the effective air volume by 5-10%.

[0016] In practice, the bladeless fan controls the rotation of the impeller 23, and the airflow enters the impeller 23 from the air inlet. The air duct 234 between the blades sends the airflow to the air outlet 33.

[0017] The serrated structure 235 divides the smooth, large edge into many small, discontinuous edges. When the airflow passes through these small serrations, the size of the generated vortex becomes smaller, the frequency of vortex shedding increases (tending towards higher frequencies), and the randomness of vortex shedding increases.

[0018] This design disperses the "roaring" noise, which is originally concentrated in the lower frequency range and is relatively sensitive to the human ear, across a wider, higher frequency spectrum. The human ear is relatively less sensitive to high-frequency noise, and high-frequency noise is more easily absorbed by the environment or masked by other sounds from the fan itself (such as motor noise). Therefore, the overall perceived noise level is significantly reduced, and the sound sounds smoother, quieter, or softer ("white noise").

[0019] The airflow separation caused by smooth, sharp edges not only generates noise, but also creates a low-pressure "dead zone" or turbulent zone, hindering the smooth flow of air into the fan.

[0020] The small serrations can guide the airflow to adhere more smoothly to the surface of the air intake fins, reduce the size and intensity of the airflow separation zone, and improve intake efficiency.

[0021] More efficient air intake means that the internal impeller can capture more air, reduce intake resistance, improve the aerodynamic efficiency of the overall system, and help to achieve greater air volume with the same power consumption, or reduce power consumption with the same air volume.

[0022] The serrated structure can be carefully designed to act as a guide vane, helping to guide airflow into the air duct inside the base at a more ideal angle, reducing airflow impact loss and further improving efficiency.

[0023] In some designs, the serrated structure may also slightly increase the local stiffness of the air intake grille edge, helping to reduce vibration or shaking caused by high-speed airflow, thereby indirectly reducing noise generated by vibration. The core function of the teeth on the bladeless fan air intake blades is to "break up" large vortices, reduce airflow separation, and optimize airflow guidance.

[0024] Significantly reduces intake noise (especially the annoying low-frequency hum), making the fan run quieter, improving intake efficiency, optimizing internal airflow, and enhancing the overall performance and energy efficiency of the fan.

[0025] The lower rotor 232 is conical, which causes the airflow from the duct 234 to be blown out along the inclined surface of the lower cone with a diving force. The blades in the rotor have long blades, medium blades and short blades.

[0026] The upper housing 21 is provided with several upper air guide vanes 211 along its edge, and the lower housing 31 is provided with several lower air guide vanes 311 along its edge. When the upper housing 21 and the lower housing 31 are fixedly installed together, the upper air guide vanes 211 and the lower air guide vanes 311 are connected to form a closed air outlet 101. The closed air outlet 101 is alternately arranged in the air outlet 33 of the lamp body to further compress the airflow, making the air blown out of the air outlet 33 more powerful and increasing the distance the airflow is blown out.

[0027] The lower housing 31 has a lampshade 34 at the bottom of the light source plate 32. The light source plate 32 generates illumination light which shines outward through the lampshade 34. The lamp body can be set to be round or square.

Claims

1. A bladeless fan light, characterized by, The lamp includes a lamp body (10), which has a fan section (20) and an illumination section (30). The fan section (20) includes an upper housing (21), a motor (22), and a fan wheel (23). The rotating shaft of the motor (22) is fixedly connected to the center of the fan wheel (23). The upper housing (21) is located on the upper surface of the fan wheel (23). The upper housing (21) and the fan wheel (23) have an opening in the center. The fan wheel (23) has an upper wheel body (231), a lower wheel body (232), and several blades (233). 31) The upper wheel (231) is connected to the lower wheel body (232) by a number of blades (233), so that a number of air ducts (234) are formed between the upper wheel body (231) and the lower wheel body (232). The blades (233) in the opening are provided with a serrated structure (235) at the top. The lighting part (30) includes a lower housing (31) and a light source plate (32). The light source plate (32) is located in the center of the lower housing (31). A number of air outlets (33) are provided on the edge of the lower housing (31). The air outlets (33) are interconnected with the air ducts (234) of the impeller (23).

2. The bladeless fan lamp of claim 1, wherein, The lower wheel body (232) is conical, which causes the airflow from the air duct (234) to be blown out along the inclined surface of the lower cone with a diving force.

3. The bladeless fan lamp of claim 1, wherein, The upper housing (21) has several upper air guides (211) along its edge, and the lower housing (31) has several lower air guides (311) along its edge. When the upper housing (21) and the lower housing (31) are fixedly installed together, the upper air guides (211) and the lower air guides (311) are connected to form a closed air opening (101), and the closed air openings (101) are alternately arranged in the air outlet (33) of the lamp body.

4. The bladeless fan lamp of claim 3, wherein, The lower housing (31) has a lampshade (34) at the bottom of the light source plate (32), and the light source plate (32) generates illumination light that shines outward through the lampshade (34).

5. The bladeless fan lamp of claim 4, wherein, The blades in this wind turbine include long blades, medium blades, and short blades.

6. The bladeless fan lamp of claim 5, wherein, One end of the blade (233) is flush with the lower wheel body (232) of the upper wheel body (231), and the other end of the blade (233) extends into the opening.

7. The bladeless fan lamp of claim 6, wherein, The lamp body can be set to round or square.

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