HK40111825A - Bladeless ceiling fan - Google Patents

Description

Bladeless ceiling fan

Technical Field

This invention relates to the technical field of fans, and in particular to a bladeless ceiling fan.

Background Technology

Ceiling fans are commonly used cooling devices. The exposed blades of ceiling fans easily accumulate dust. When the fan is turned on, this dust can be blown up, polluting the air. Bladeless fans solve this problem. Actually, bladeless fans aren't truly bladeless; they contain a propeller with blades inside, but the blades are hidden. They are called "bladeless" because the blades are not visible to the user. However, traditional bladeless fans have limitations in adjusting airflow direction.

Summary of the Invention

Therefore, it is necessary to provide a bladeless ceiling fan that can adjust the airflow direction to address the aforementioned technical problems.

A bladeless ceiling fan, comprising:

The housing has a first annular air outlet and a second annular air outlet, and an arc-shaped airflow guiding structure is provided between the first annular air outlet and the second annular air outlet.

An airflow generating assembly, disposed within the housing, includes blades and a fan motor that drives the blades to generate airflow; and

A flow diversion mechanism is disposed within the housing. The flow diversion mechanism is used to divert the airflow generated by the blades to the first annular air outlet and the second annular air outlet, and to control the airflow rate entering the first annular air outlet and the second annular air outlet respectively.

In one embodiment, the diversion mechanism includes an airflow guiding component and an airflow control component;

The airflow guiding assembly surrounds the blade; the airflow guiding assembly includes a first guiding component and a second guiding component; the first annular air outlet is located at the edge of the first guiding component, and the second annular air outlet is located at the edge of the second guiding component;

The airflow control assembly surrounds the blade; the airflow control assembly includes a first control component and a second control component, the first control component having a first opening and a second opening; wherein the first control component and the second control component are capable of relative movement to open or close the first opening and the second opening; the first opening connects the blade and the first guide component, allowing airflow from the blade to pass through the first guide component; the second opening connects the blade and the second guide component, allowing airflow from the blade to pass through the second guide component.

In one embodiment, the first guide component includes a plurality of uniformly distributed first guide plates; a first air duct is formed between adjacent first guide plates; the first air duct is arc-shaped to reduce wind resistance; and/or the second guide component includes a plurality of uniformly distributed second guide plates; a second air duct is formed between adjacent second guide plates; the second air duct is arc-shaped to reduce wind resistance.

In one embodiment, the first control component and the second control component are circular; the first control component is rotatable.

In one embodiment, the airflow control assembly further includes a control motor; the first control component is driven by the control motor to move relative to the second control component; the second control component is fixed to the second guide component.

In one embodiment, the second control component includes a first baffle corresponding to the first opening and a second baffle corresponding to the second opening.

In one embodiment, the housing includes a first outer shell, a middle outer shell, and a second outer shell, which are connected in sequence; the first guide component is fixed to the first outer shell; the airflow guiding structure is the arc-shaped surface of the middle outer shell; and the second outer shell has an air inlet.

In one embodiment, an air filter is also included, which is fixed at the center of the second housing.

In one embodiment, sensors for monitoring pollutants and allergens are also included.

In one embodiment, a communication chip is also included for remotely controlling the fan motor and the airflow control assembly to adjust wind speed and direction.

The aforementioned bladeless ceiling fan, due to the arc-shaped airflow guiding structure between the first and second annular air outlets, generates the Coanda effect, causing the airflow to be redirected and adhere to the arc-shaped surface. The airflow from the first and second annular air outlets flows along the outer curved surface, converging into a common directional airflow. Changes in the airflow volume from the first and second annular air outlets cause changes in the direction of the directional airflow. The flow-dividing mechanism controls the airflow entering the first and second annular air outlets respectively, thereby controlling the airflow volume from the first and second annular air outlets, and ultimately controlling the final airflow direction.

Attached Figure Description

To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

Figure 1 is a perspective view of a bladeless ceiling fan in one embodiment;

Figure 2 is another perspective view of the bladeless ceiling fan shown in Figure 1;

Figure 3 is an exploded view of the bladeless ceiling fan shown in Figure 1;

Figure 4 is a cross-sectional view of the bladeless ceiling fan shown in Figure 1;

Figure 5 is an exploded view of the airflow generation component of the bladeless ceiling fan shown in Figure 1;

Figure 6 is an exploded view of the airflow guiding assembly of the bladeless ceiling fan shown in Figure 1;

Figure 7 is an exploded view of the second guide component of the bladeless ceiling fan shown in Figure 1;

Figure 8 is an exploded view of the airflow control assembly of the bladeless ceiling fan shown in Figure 1;

Figure 9 is a perspective view of the airflow control assembly of the bladeless ceiling fan shown in Figure 1;

Figure 10 is an exploded view of the housing of the bladeless ceiling fan shown in Figure 1;

Figure 11 is a schematic diagram of the airflow of a bladeless ceiling fan in direct airflow mode in one embodiment;

Figure 12 is a schematic diagram of the airflow of a bladeless ceiling fan in the circulating airflow mode in one embodiment;

Figure 13 is a schematic diagram of the airflow of a bladeless ceiling fan in a 45° angle airflow mode in one embodiment.

Detailed Implementation

To facilitate understanding of the present invention, a more complete description of the bladeless ceiling fan will be provided below with reference to the accompanying drawings. The drawings show a preferred embodiment of the bladeless ceiling fan. However, bladeless ceiling fans can be implemented in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the bladeless ceiling fan more thorough and complete.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the bladeless ceiling fan is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in Figures 1 and 2, an embodiment of this application provides a bladeless ceiling fan 10. Referring to Figures 3 and 4, the bladeless ceiling fan 10 includes an airflow generating component 100, a flow splitting mechanism, and a housing 400. Both the airflow generating component 100 and the flow splitting mechanism are disposed within the housing 400. Referring to Figure 5, the airflow generating component 100 includes blades 120 and a fan motor 140 that drives the blades 120 to generate airflow. In one embodiment, the flow splitting mechanism may include an airflow guiding component 200 and an airflow control component 300.

The housing 400 has a first annular air outlet 222 and a second annular air outlet 242. An arc-shaped airflow guiding structure 401 is provided between the first annular air outlet 222 and the second annular air outlet 242. The flow diversion mechanism is used to divert the airflow generated by the blades 120 to the first annular air outlet 222 and the second annular air outlet 242, and to control the airflow entering the first annular air outlet 222 and the second annular air outlet 242 respectively.

Because an arc-shaped airflow guiding structure 401 is provided between the first annular air outlet 222 and the second annular air outlet 242, a Coanda effect is generated, causing the airflow to be redirected and adhered to the arc-shaped surface. The airflow from the first annular air outlet 222 and the second annular air outlet 242 flows along the outer curved surface and converges into a common directional airflow. Changes in the airflow volume of the first annular air outlet 222 and the second annular air outlet 242 will cause changes in the direction of the directional airflow. The diversion mechanism can control the airflow entering the first guide component 220 and the second guide component 240 respectively, thereby controlling the airflow volume of the first annular air outlet 222 and the second annular air outlet 242, and thus controlling the final airflow direction.

In one embodiment, the airflow guiding assembly 200 surrounds the blade 120. The airflow guiding assembly 200 includes a first guiding member 220 and a second guiding member 240. A first annular air outlet 222 is disposed at the edge of the first guiding member 220, and a second annular air outlet 242 is disposed at the edge of the second guiding member 240. Referring to Figures 6 and 7, in some embodiments, the first guiding member 220 may include a plurality of uniformly distributed first guiding plates 224. A first air duct 226 is formed between adjacent first guiding plates 224. The first air duct 226 is arc-shaped to reduce air resistance. In some embodiments, the second guiding member 240 may include a plurality of uniformly distributed second guiding plates 244. A second air duct 246 is formed between adjacent second guiding plates 244. The second air duct 246 is arc-shaped to reduce air resistance.

Referring to Figures 8 and 9, the airflow control assembly 300 surrounds the blade 120. The airflow control assembly 300 includes a control component 320 and a second control component 340. The first control component 320 has a first opening 322 and a second opening 324. The first control component 320 and the second control component 340 are movable relative to each other to open or close the first opening 322 and the second opening 324. The first opening 322 connects the blade 120 and the first guide component 220 to allow airflow from the blade 120 to pass through the first guide component 220. The second opening 324 connects the blade 120 and the second guide component 240 to allow airflow from the blade 120 to pass through the second guide component 240.

In some embodiments, the first control member 320 and the second control member 340 may be annular. In one embodiment, the first control member 320 is rotatable. In other embodiments, the second control member 340 may also be rotatable. In one embodiment, the airflow control assembly 300 may further include a control motor 360. The first control member 320 is driven by the control motor 360 to move relative to the second control member 340. The second control member 340 is fixed to the second guide member 240. Furthermore, in one embodiment, the second control member 340 may include a first baffle 342 corresponding to the first opening 322 and a second baffle 344 corresponding to the second opening 324.

Referring to Figure 10, the housing 400 houses the airflow generating assembly 100, the airflow guiding assembly 200, and the airflow control assembly 300. An arc-shaped airflow guiding structure 401 is provided between the first annular air outlet 222 and the second annular air outlet 242 in the housing 400. In one embodiment, the housing 400 includes a first outer shell 420, a middle outer shell 440, and a second outer shell 460, wherein the first outer shell 420, the middle outer shell 440, and the second outer shell 460 are connected sequentially. A first guide member 220 is fixed to the first outer shell 420. The arc-shaped airflow guiding structure 401 is the arc-shaped surface of the middle outer shell 440. An air inlet 462 is provided on the second outer shell 460.

Because an arc-shaped airflow guiding structure 401 is provided between the first annular air outlet 222 and the second annular air outlet 242, a Coanda effect is generated, causing the airflow to be redirected and adhered to the arc-shaped surface. The airflow from the first annular air outlet 222 and the second annular air outlet 242 flows along the outer curved surface and converges into a common directional airflow. Changes in the airflow volume of the first annular air outlet 222 and the second annular air outlet 242 will cause changes in the direction of the directional airflow. The airflow control component 300 can control the airflow entering the first guide component 220 and the second guide component 240 respectively, thereby controlling the airflow volume of the first annular air outlet 222 and the second annular air outlet 242, and thus controlling the final airflow direction. In one embodiment, the airflow directions of the first annular air outlet 222 and the second annular air outlet 242 can be perpendicular to each other. The airflow direction of the first annular air outlet 222 can be downward, while the airflow direction of the second annular air outlet 242 can be horizontal.

Referring to Figure 11, when only airflow comes from the first annular air outlet 222, and the second annular air outlet 242 emits little or no airflow, the outlet airflow direction is downward, i.e., it is in direct airflow mode. Referring to Figure 12, when only airflow comes from the second annular air outlet 242, and the first annular air outlet 222 emits little or no airflow, the outlet airflow direction is dispersed, i.e., it is in circulating airflow mode. Referring to Figure 13, when the airflow rates of the first annular air outlet 222 and the second annular air outlet 242 are similar or almost equal, the outlet airflow direction is at a 45° angle. By controlling the airflow rates of the first annular air outlet 222 and the second annular air outlet 242, the bladeless ceiling fan 10 can direct the airflow to any desired angle. Furthermore, the bladeless ceiling fan 10 can continuously release airflow without interruption while adjusting the outlet airflow direction.

In some embodiments, the bladeless ceiling fan 10 can also be used to purify indoor air. Referring to Figures 2 and 3, the bladeless ceiling fan 10 may further include an air filter 500. The air filter 500 may be fixed at the center of the second housing 460. In one embodiment, the air filter 500 may be a HEPA filter (High-Efficiency Particulate Air Filter). In one embodiment, the bladeless ceiling fan 10 may further include a sensor 600 for monitoring pollutants and allergens.

In some embodiments, the bladeless ceiling fan 10 can also be a smart home device. The bladeless ceiling fan 10 may further include a communication chip for remotely controlling the fan motor 140 and the airflow control component 300 to adjust speed and airflow direction. Combined with AI-controlled airflow speed variations, the bladeless ceiling fan 10 can achieve a seamless sweeping effect throughout the entire airflow loop. This results in efficient and optimal circulation of indoor air, as well as efficient heat distribution.

The bladeless ceiling fan 10 can be equipped with smart home systems and the Internet of Things (IoT). It serves as a hub that communicates with air conditioning, analyzes, and intelligently adapts to indoor environmental data. By leveraging machine learning, the bladeless ceiling fan 10 can create thermal comfort profiles. Integrated AI algorithms control airflow speed, direction, and air conditioning via infrared, radio frequency, Wi-Fi, and Bluetooth to achieve ideal temperature and humidity levels, resulting in optimal human thermal comfort while reducing energy consumption by up to 20%, giving users complete control over their environment anytime, anywhere.

The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims (10)

1. A bladeless ceiling fan, characterized in that it comprises: The housing has a first annular air outlet and a second annular air outlet, and an arc-shaped airflow guiding structure is provided between the first annular air outlet and the second annular air outlet. An airflow generating assembly, disposed within the housing, includes blades and a fan motor that drives the blades to generate airflow; and A flow diversion mechanism is disposed within the housing. The flow diversion mechanism is used to divert the airflow generated by the blades to the first annular air outlet and the second annular air outlet, and to control the airflow rate entering the first annular air outlet and the second annular air outlet respectively. 2. The bladeless ceiling fan according to claim 1, wherein the flow splitting mechanism comprises an airflow guiding component and an airflow control component; The airflow guiding assembly surrounds the blade; the airflow guiding assembly includes a first guiding component and a second guiding component; the first annular air outlet is located at the edge of the first guiding component, and the second annular air outlet is located at the edge of the second guiding component; The airflow control assembly surrounds the blade; the airflow control assembly includes a first control component and a second control component, the first control component having a first opening and a second opening; wherein the first control component and the second control component are capable of relative movement to open or close the first opening and the second opening; the first opening connects the blade and the first guide component, allowing airflow from the blade to pass through the first guide component; the second opening connects the blade and the second guide component, allowing airflow from the blade to pass through the second guide component. 3. The bladeless ceiling fan according to claim 2, characterized in that the first guide component includes a plurality of uniformly distributed first guide plates; a first air duct is formed between adjacent first guide plates; the first air duct is arc-shaped to reduce wind resistance; and/or the second guide component includes a plurality of uniformly distributed second guide plates; a second air duct is formed between adjacent second guide plates; the second air duct is arc-shaped to reduce wind resistance. 4. The bladeless ceiling fan according to claim 2, characterized in that the first control component and the second control component are circular; the first control component is rotatable. 5. The bladeless ceiling fan according to claim 4, wherein the airflow control assembly further includes a control motor; the first control component is driven by the control motor to move relative to the second control component; and the second control component is fixed on the second guide component. 6. The bladeless ceiling fan according to claim 4, wherein the second control component includes a first baffle corresponding to the first opening and a second baffle corresponding to the second opening. 7. The bladeless ceiling fan according to claim 2, characterized in that the housing comprises a first outer shell, a middle outer shell, and a second outer shell, the first outer shell, the middle outer shell, and the second outer shell being connected in sequence; the first guide component is fixed on the first outer shell; the airflow guiding structure is the arc-shaped surface of the middle outer shell; and the second outer shell is provided with an air inlet. 8. The bladeless ceiling fan according to claim 7, characterized in that it further includes an air filter, the air filter being fixed at the center of the second housing. 9. The bladeless ceiling fan according to claim 8, characterized in that it further includes sensors for monitoring pollutants and allergens. 10. The bladeless ceiling fan according to claim 1, characterized in that it further includes a communication chip for remotely controlling the fan motor and the airflow control component to adjust the wind speed and wind direction.