High-speed mute bladeless fan

Abstract

The utility model discloses a high-speed silent bladeless fan which comprises a tubular shell, a bending part is arranged on the shell, the bending part defines a first end part and a second end part in the length direction of the shell, and the first end part and the second end part are connected to the two opposite sides of the bending part respectively. A first end portion and a second end portion are arranged on the casing, a fan blade group is arranged inside the first end portion, an air inlet is arranged on the casing, a port of one end of the first end portion far away from the bending portion is an air outlet, and a storage battery and a circuit board assembly which are electrically connected with each other are arranged inside the second end portion. In addition, the air channel pressurization structure is arranged at the position close to the air outlet, the air flow utilization rate can be effectively increased, turbulence removing and noise reducing treatment is considered while the pressurization structure conducts pressurization, the air speed is greatly increased, the air supply distance is greatly increased, and meanwhile the mute and noise reducing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a high-speed, quiet, bladeless fan. Background Technology

[0002] A bladeless fan is a device that produces a natural, continuous cool breeze without the blades of a traditional fan. The operating principle of a bladeless fan is to draw in air using an internal centrifugal compressor or cyclone accelerator, increase its speed, and then expel it through a narrow annular cut or slit, thus generating a cool breeze. This design not only allows bladeless fans to produce a strong yet gentle airflow but also avoids the safety hazards and dust accumulation problems that can arise from the rotating blades of traditional fans.

[0003] The biggest drawback of bladeless fans is their extremely loud noise during operation, especially since the noise level is directly proportional to the wind speed. This is the most unbearable aspect for users, which is why bladeless fans cannot be as widely used as traditional fans, especially in the field of portable small fans, where bladeless fans are extremely rare. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed, quiet bladeless fan that achieves both high-speed airflow and noise reduction, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-speed, silent bladeless fan, comprising a housing, the housing being tubular, a curved portion being provided on the housing, the curved portion defining a first end and a second end of the housing along the length direction of the housing, the first end and the second end being respectively connected to opposite sides of the curved portion, a drive fan blade assembly being provided inside the first end, an air inlet being provided on the housing, and an air outlet being provided at the end of the first end away from the curved portion, the drive fan blade assembly guiding air located at the air inlet into the housing and then accelerating outward from the air outlet, a storage battery being provided inside the second end, and a circuit board assembly being provided inside the housing, the drive fan blade assembly and the storage battery being electrically connected to the circuit board assembly.

[0006] Preferably, the circuit board assembly is disposed within the second end, and the circuit board assembly is electrically connected to a display screen, control buttons, and a USB interface, all of which are disposed in a pre-set through hole in the housing.

[0007] Preferably, the housing includes an upper shell, a lower shell, and an end cap, wherein the upper shell and the lower shell are connected to each other to form a tubular body, and the end cap is installed at the second end port away from the curved portion.

[0008] Preferably, the air inlet includes a first air inlet and a second air inlet, the first air inlet being disposed on one side wall in the outer diameter direction of the curved portion, and the second air inlet being disposed at the end of the second end away from the curved portion.

[0009] Preferably, an inner shell is provided inside the first end, and a motor base is provided on the inner shell. The drive fan blade assembly is installed on the side of the motor base away from the air outlet. The motor base and the inner shell are coaxially arranged. The circumferential wall of the motor base extends towards the inner shell to form a flow guiding and pressurizing blade. Multiple flow guiding and pressurizing blades are provided, and the multiple flow guiding and pressurizing blades are evenly arranged around the circumference of the motor base.

[0010] Preferably, the inner shell is fitted with a shock-absorbing silicone sleeve.

[0011] Preferably, the motor base is provided with a pressure relief protrusion on the side facing the air outlet, and the pressure relief protrusion is a hemisphere.

[0012] Preferably, an air-gathering shroud is provided at the air outlet, and the inner diameter of the air-gathering shroud gradually decreases from the side facing the drive fan blade assembly to the side away from the drive fan blade assembly.

[0013] Preferably, the wind-concentrating cover is fixed to the air outlet by a sealing ring.

[0014] Preferably, the first end, the bent portion, and the second end are internally connected.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The design of the two air inlets in this invention ensures an unobstructed and sufficient supply of air volume, providing low-pressure and low-noise working conditions for the air inlet. In addition, the air duct pressurization structure is set near the air outlet, which can effectively improve the airflow utilization rate. Moreover, the pressurization structure also considers turbulence reduction and noise reduction while pressurizing, which not only greatly improves the wind speed and air delivery distance, but also achieves the effect of quiet noise reduction. Attached Figure Description

[0017] Figure 1 This is an exploded view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional orientation of this utility model;

[0019] Figure 3 This is a cross-sectional view of the present invention (AA).

[0020] Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0021] Figure 5This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the inner shell structure of this utility model.

[0023] In the diagram: 1. Encapsulation ring; 2. Condenser cover; 3. Pressure relief protrusion; 4. Inner shell; 41. Motor base; 42. Guide and booster blades; 5. Drive fan blade assembly; 6. Shock-absorbing silicone sleeve; 7. Upper shell; 71. First air inlet; 8. Lower shell; 9. Circuit board assembly; 91. Display screen; 92. Control buttons; 93. USB interface; 10. Battery; 11. End cap; 111. Second air inlet; 1000. First end; 2000. Bending section; 3000. Second end. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6A high-speed, silent bladeless fan includes a housing, characterized in that: the housing is tubular, and a curved portion 2000 is provided on the housing. The curved portion 2000 defines a first end 1000 and a second end 3000 on the length direction of the housing. The first end 1000 and the second end 3000 are respectively connected to opposite sides of the curved portion 2000. The first end 1000, the curved portion 2000, and the second end 3000 are partially connected. A fan blade assembly 5 is provided inside the first end 1000. An air inlet is provided on the housing, and the air inlet includes a first air inlet 71 and a second air inlet 111. The first air inlet 71 is located on the outer diameter direction of the curved portion 2000. On the side wall, the second air inlet 111 is located at the end of the second end 3000 away from the bend 2000. The first air inlet 71 is the main air inlet of this technical solution. It is located on the side wall of the outer diameter of the bend 2000, which can provide airflow to the drive fan blade assembly 5 with the shortest distance and a straight airflow path, effectively ensuring the basic airflow supply to the drive fan blade assembly 5. The second air inlet 111 has two purposes. First, it provides auxiliary airflow supply to the first air inlet 71. The dual air inlet configuration can better reduce the air supply pressure of a single air inlet. While meeting the needs of the drive fan blade assembly 5, it also helps to reduce the air pressure at the air inlet end, thereby reducing the noise of the air duct. Second, the second air inlet 111 is designed to... The first end 1000, located at the end of the second end 3000, supplies airflow to the fan blade assembly 5 while simultaneously carrying away the heat generated by the circuit board assembly 9 and the battery 10 during operation. This prevents the casing from overheating due to prolonged heat accumulation, improving the user experience and extending the lifespan of the electrical components. The end of the first end 1000 away from the bend 2000 serves as an air outlet. The fan blade assembly 5 guides air from the air inlet into the casing and then accelerates its way out through the outlet. The second end 3000 houses the battery 10 and the circuit board assembly 9. The placement of the battery and circuit board assembly 9 within the second end 3000 increases the weight of the second end 3000, thus improving the overall performance. In this embodiment, the fan's center of gravity is shifted to the second end 3000, allowing the fan to be stably placed on a tabletop for use. The fan blade assembly 5 and the battery 10 are both electrically connected to the circuit board assembly 9. The circuit board assembly 9 is electrically equipped with a display screen 91, control buttons 92, and a USB interface 93. The display screen 91, control buttons 92, and USB interface 93 are all located in pre-set through holes in the housing. The display screen 91 is used to display the working status of the fan blade assembly 5 and the real-time power level of the battery 10. The control buttons 92 are used to adjust the working mode of the fan blade assembly 5. When an external power supply is connected to the USB interface 93, the battery 10 can be charged.

[0026] The housing includes an upper shell 7, a lower shell 8, and an end cap 11. The upper shell 7 and the lower shell 8 are connected to each other to form a tubular body. The end cap 11 is installed at the second end 3000 at the port away from the bend 2000.

[0027] An inner shell 4 is provided within the first end portion 1000, and a motor base 41 is provided on the inner shell 4. The drive fan blade assembly 5 is installed on the side of the motor base 41 away from the air outlet. The motor base 41 is coaxially arranged with the inner shell 4. A portion of the circumferential wall of the motor base 41 extends towards the inner shell 4 to form a flow guiding and pressurizing blade 42. Multiple flow guiding and pressurizing blades 42 are provided, and the multiple flow guiding and pressurizing blades 42 are evenly arranged around the circumference of the motor base 41. The flow guiding and pressurizing blades 42 cut, pressurize, and increase the speed of the airflow output by the drive fan blade assembly 5 through the inclined blades facing the end of the drive fan blade assembly 5, and simultaneously through the end facing the air outlet and the axial direction of the air outlet. Parallel planar blades guide the airflow as parallel as possible to the outlet axis, effectively increasing the effective range of the airflow. A concentrator shroud 2 is installed at the outlet, with its inner diameter gradually decreasing from the side facing the drive fan blade assembly 5 to the side away from the drive fan blade assembly 5. The concentrator shroud 2 is fixed to the outlet by a sealing ring 1. The concentrator shroud 2, with its constricted structure, compresses and enhances the airflow blowing outward from the outlet, further increasing the effective range of the airflow and allowing it to travel further after exiting the outlet. At the same time, by increasing the circumferential pressure of the airflow bundle, some turbulence phenomena can be eliminated, thereby achieving a turbulence-reducing and noise-reducing effect.

[0028] The motor base 41 is provided with a pressure relief protrusion 3 facing the air outlet. The pressure relief protrusion 3 is hemispherical. When the high-speed airflow is blown out from the gap between the guide and pressurizing blades 42, a high-pressure vacuum zone will be formed at the motor base 41 which is surrounded by the guide and pressurizing blades 42. Although the high-pressure vacuum zone is formed by the high-speed airflow, it will also generate a back suction force on the high-speed airflow around it. This back suction force will cause a certain turbulence phenomenon in the high-speed airflow, thereby affecting the air outlet efficiency and increasing the airflow noise. Therefore, the setting of the pressure relief protrusion 3 can effectively reduce the existence of the vacuum zone and avoid the adverse effects caused therefrom to the greatest extent.

[0029] The inner shell 4 is surrounded by a shock-absorbing silicone sleeve 6, which is sandwiched between the inner shell 4 and the outer shell. When the drive fan blade assembly 5 is working, it can play a flexible buffering role, which can not only avoid the phenomenon of the outer shell jumping, but also effectively reduce the noise generated by the drive fan blade assembly 5 when it is working.

[0030] In summary, the design of the dual air inlets of this invention ensures an unobstructed and sufficient supply of airflow, providing low-pressure and low-noise operating conditions for the air intake. In addition, the air duct pressurization structure is located near the air outlet, which can effectively improve the airflow utilization rate. Moreover, the pressurization structure also considers turbulence reduction and noise reduction while pressurizing, which not only greatly improves the wind speed and air delivery distance, but also achieves the effect of quiet noise reduction.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high speed silent bladeless fan comprising a housing, characterized in that: The shell is a tubular body, the shell is provided with a bending part (2000), the bending part (2000) defines the first end part (1000) and the second end part (3000) in the length direction of the shell, the first end part (1000) and the second end part (3000) are connected to the opposite sides of the bending part (2000) respectively, the first end part (1000) is provided with a driving fan blade group (5) inside, the shell is provided with an air inlet, the port of the first end part (1000) away from the bending part (2000) is an air outlet, the driving fan blade group (5) guides the air at the air inlet to flow into the shell and then accelerates outward from the air outlet, the second end part (3000) is provided with a battery (10) inside, the shell is provided with a circuit board assembly (9) inside, and the driving fan blade group (5) and the battery (10) are electrically connected with the circuit board assembly (9).

2. A high speed silent bladeless fan as claimed in claim 1 wherein: The circuit board assembly (9) is arranged in the second end part (3000), the circuit board assembly (9) is electrically connected with a display screen (91), a control button (92) and a USB interface (93), and the display screen (91), the control button (92) and the USB interface (93) are arranged in the through hole of the shell.

3. A high-speed silent bladeless fan according to claim 1 or 2, characterized in that: The shell comprises an upper shell (7), a lower shell (8) and an end cover (11), the upper shell (7) and the lower shell (8) are connected to each other to form a tubular body, and the end cover (11) is arranged at the port of the second end part (3000) away from the bending part (2000).

4. A high speed silent bladeless fan as claimed in claim 1, wherein: The air inlet comprises a first air inlet (71) and a second air inlet (111), the first air inlet (71) is arranged on the side wall surface of the bending part (2000) in the outer diameter direction, and the second air inlet (111) is arranged at the end part of the second end part (3000) away from the bending part (2000).

5. A high speed silent bladeless fan as claimed in claim 1, wherein: The first end part (1000) is provided with an inner shell (4), the inner shell (4) is provided with a motor base (41), the driving fan blade group (5) is arranged on the side of the motor base (41) away from the air outlet, the motor base (41) is coaxially arranged with the inner shell (4), the circumferential part wall surface of the motor base (41) extends towards the side of the inner shell (4) to form a flow guide supercharging blade (42), the flow guide supercharging blade (42) is provided with a plurality of pieces, and the plurality of flow guide supercharging blades (42) are arranged uniformly around the motor base (41) in the circumferential direction.

6. A high-speed silent bladeless fan according to claim 5, characterized in that: The inner shell (4) is peripherally provided with a shock-absorbing silica gel sleeve (6).

7. A high speed silent bladeless fan as claimed in claim 5 wherein: The motor base (41) is provided with a pressure discharge protrusion (3) on the side towards the air outlet, and the pressure discharge protrusion (3) is a hemisphere.

8. A high-speed silent bladeless fan according to claim 1 or 5, characterized in that: The air outlet is provided with a wind collecting cover (2), and the inner diameter of the wind collecting cover (2) gradually decreases from the side towards the driving fan blade group (5) to the side away from the driving fan blade group (5).

9. A high-speed silent bladeless fan according to claim 8, characterized in that: The wind collecting cover (2) is fixed to the air outlet through an encapsulation ring (1).

10. A high speed silent bladeless fan as claimed in claim 1, wherein: The first end part (1000), the bending part (2000) and the second end part (3000) are communicated.

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