A stepless speed control violent fan

Abstract

This invention proposes a stepless speed-regulating high-speed fan, including a handle and a fan casing connected to the handle. The handle is equipped with a knob and a display screen. A control module is installed inside the handle, and a motor connected to the control module is installed inside the fan casing. The knob is electrically connected to the control module to achieve stepless adjustment of the motor speed, and the display screen shows the motor speed in real time. This invention, by using a knob for stepless speed regulation, enables continuous and smooth fan speed control, eliminating the need for the linear reciprocating slider adjustment commonly found in the market. This improves the flexibility and accuracy of fan speed adjustment, and the real-time display screen allows for free adjustment of the airflow according to actual needs, resulting in a more comfortable user experience.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a high-performance fan with stepless speed regulation. Background Technology

[0002] A high-powered fan is a portable, handheld fan that typically uses a high-powered motor to provide strong airflow in a short time. It is widely used for outdoor cooling, exercise relief, and rapid localized heat dissipation. Compared to traditional small handheld fans, high-powered fans emphasize wind strength and instantaneous airflow, and have therefore gained increasing popularity in recent years.

[0003] However, existing high-power fans offer relatively simple methods for controlling airflow, with most products using a linear reciprocating slider mechanism to adjust speed. This control method not only suffers from insufficient adjustment precision and poor tactile feedback but is also prone to malfunction due to wear on the slider. Furthermore, existing fans generally employ fixed-speed settings, typically offering only two or three wind speed options, resulting in poor adjustment flexibility and failing to meet users' diverse wind speed needs. In addition, the homogeneous design of existing high-power fans leads to poor aesthetics and reduces the user experience. Utility Model Content

[0004] This utility model proposes a stepless speed-regulating high-speed fan to solve the problems mentioned in the background art, such as existing high-speed fans having only limited speed settings, poor adjustment flexibility, and existing slider adjustment methods having poor feel, easy wear and failure, and unsightly product appearance.

[0005] The technical solution of this utility model is implemented as follows: A high-speed fan with stepless speed regulation includes a handle and a fan casing connected to the handle. The handle is equipped with a knob and a display screen. A control module is installed inside the handle. A motor connected to the control module is installed inside the fan casing. The knob is electrically connected to the control module to achieve stepless adjustment of the motor speed, and the motor speed is displayed in real time on the display screen.

[0006] Preferably, the knob has a circular ring structure, and the display screen is installed at the center of the circular ring knob.

[0007] Preferably, the knob and the display screen are mounted on the same side or different sides of the handle.

[0008] Preferably, the outer surface of the knob is provided with a first texture, and the air outlet of the air duct is connected to an air outlet cap, the outer surface of which is provided with a second texture.

[0009] Preferably, the first texture and the second texture have the same shape, and the texture shapes of the first texture and the second texture are regular polygons or stars.

[0010] Preferably, the air duct is provided with a guide shroud near the air outlet. The outer diameter of the guide shroud gradually decreases from the air inlet end to the air outlet end, and the cross-sectional shape of the guide shroud near the air outlet end is arc-shaped. The inner wall size of the air duct gradually decreases from the middle of the air duct towards the air outlet, and the inner wall shape of the air duct near the air outlet is arc-shaped. A ventilation gap is formed between the guide shroud and the inner wall of the air duct.

[0011] Preferably, the motor shaft end is equipped with fan blades, and the air inlet end of the air duct is equipped with an air inlet mesh plate, the mesh shape of which is a regular polygon, rhombus, circle or ellipse.

[0012] Preferably, a switch button is mounted on the surface of the handle.

[0013] Preferably, the fan is installed at the end of the handle, making the fan T-shaped, and the center of the two ends of the fan coincides with the center line of the handle; the outer wall of the fan is provided with a mounting groove, the root of the mounting groove is arc-shaped, the end of the handle extends outward in an arc shape to both sides and the inner wall forms an arc surface that matches the shape of the root of the mounting groove, and the end of the handle is placed in the mounting groove and connected to the fan.

[0014] Preferably, the handle has a built-in battery pack and power management module configured to provide power to the high-powered fan; Temperature detection modules are respectively installed in the air duct and the handle, which are configured to detect the temperature of the motor and the battery pack respectively, and send a signal to the control module when the temperature is abnormal; The control module includes: The microcontroller unit is used to receive adjustment signals from the knob, process signals from the temperature detection module, and output motor speed control signals. The motor drive circuit is used to drive the motor according to the control signal output by the microcontroller unit, so as to realize stepless speed regulation of the fan.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are as follows: This invention uses a knob for stepless speed adjustment, enabling the fan to achieve continuous and smooth wind speed control. This eliminates the need for the linear reciprocating adjustment method commonly found in the market, improving the flexibility and accuracy of wind speed adjustment. Furthermore, the display screen allows for real-time monitoring of the motor speed, enabling users to freely adjust the wind force according to actual needs, resulting in a more comfortable user experience.

[0016] This utility model's high-performance fan adopts a symmetrical T-shaped structure design, and the knob surface and the air outlet end cover surface have the same texture design, making the fan's appearance more harmonious and unified, and improving the overall aesthetics of the fan. Attached Figure Description

[0017] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This utility model is three-dimensional. Figure 1 ; Figure 2 This utility model is three-dimensional. Figure 2 ; Figure 3 This is an exploded view of the present invention; Figure 4 This is a diagram of the internal structure of the ventilation duct of this utility model; Figure 5 This is a perspective view of the knob of this utility model; Figure 6 This is a perspective view of the air outlet end cover of this utility model.

[0019] in: 1. Handle; 101. Curved surface; 2. Display screen; 3. Knob; 301. First texture; 4. Air outlet cover; 401. Second texture; 5. Air duct; 501. Mounting slot; 6. Air guide cover; 7. Motor; 8. Fan blades; 9. Air inlet mesh; 10. Ventilation gap; 11. Switch button. Detailed Implementation

[0020] 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.

[0021] As shown in the figure, a stepless speed-regulating high-speed fan includes a handle 1 and a fan duct 5 connected to the handle 1. In this example, the fan duct 5 is installed at the end of the handle 1, making the high-speed fan T-shaped, and the center of the two ends of the high-speed fan coincides with the center line of the handle 1. Specifically, a mounting groove 501 is provided on the outer wall of the fan duct 5, and the root of the mounting groove 501 is arc-shaped. The end of the handle 1 extends outward in an arc shape to both sides, and the inner wall forms an arc surface 101 that matches the shape of the root of the mounting groove 501. The end of the handle 1 is placed in the mounting groove 501 and connected to the fan duct 5, so that the end of the handle 1 can be placed in the mounting groove 501, and a smooth transition is formed at the connection between the fan duct 5 and the handle 1. The fan duct 5 and the handle 1 are connected and fixed by screws or clips.

[0022] The handle 1 is equipped with a knob 3 and a display screen 2. A control module is installed inside the handle 1, and a motor 7 connected to the control module is installed inside the air duct 5. The motor 7 is a brushless DC motor. The knob 3 is electrically connected to the control module to achieve stepless adjustment of the speed of the motor 7, and the speed of the motor 7 is displayed in real time on the display screen 2. In this example, the knob 3 has a circular structure, and the display screen 2 is installed at the center of the circular knob 3. It has the advantages of simple and beautiful structure, and the speed of the motor 7 can be quickly viewed from the display screen 2 when the knob 3 is turned, which improves the user experience.

[0023] It is understood that in other embodiments, the knob 3 and the display screen 2 are respectively installed on the same side or different side surfaces of the handle 1. That is, the knob 3 and the display screen 2 can be installed at different positions on the same side surface of the handle 1, or they can be installed on different outer surfaces of the handle 1.

[0024] Specifically, the outer surface of the knob 3 is provided with a first texture 301, and the air outlet of the air duct 5 is connected to an air outlet cap 4, the outer surface of which is provided with a second texture 401. In this example, the first texture 301 and the second texture 401 have the same shape, both adopting a regular triangular structure with concave and convex arrangements. In other embodiments, the texture shapes of the first texture 301 and the second texture 401 can also be other regular polygonal or star-shaped structures. Because the first texture 301 and the second texture 401 have the same shape, the two textures contrast with each other, making them more unified and improving aesthetics.

[0025] Specifically, the air duct 5 is equipped with a guide shroud 6 near the air outlet. The guide shroud 6 can be fixedly connected to the motor 7. The outer diameter of the guide shroud 6 gradually decreases from the air inlet end to the air outlet end, and the cross-sectional shape of the guide shroud 6 near the air outlet end is arc-shaped. The inner wall size of the air duct 5 gradually decreases from the middle of the air duct 5 towards the air outlet, and the inner wall shape of the air duct 5 near the air outlet is arc-shaped. A ventilation gap 10 is formed between the guide shroud 6 and the inner wall of the air duct 5, which can effectively improve the airflow stability, facilitate the concentration of airflow towards the center, help improve wind speed and air outlet efficiency, and also reduce noise during operation.

[0026] Specifically, the motor 7 has a fan blade 8 installed on its shaft end, and the air inlet plate 9 is installed at the air inlet end of the air duct 5. The mesh shape of the air inlet plate 9 is an equilateral triangle. It can be understood that in other embodiments, the mesh shape can also be designed as other regular polygons, rhombuses, circles or ellipses, etc.

[0027] Specifically, a switch button 11 is installed on the surface of the handle 1. The switch button 11 is connected to the power management module to realize switch control. An indicator light is also provided on the switch button 11, which can serve as a prompt after the power is turned on.

[0028] Specifically, the handle 1 has a built-in battery pack and power management module to provide a stable power supply for the fan. The battery pack can be a rechargeable lithium battery, and the power management module provides charge / discharge protection, voltage regulation, and overcurrent and overtemperature protection, thereby ensuring that the fan can operate safely and reliably under various usage conditions.

[0029] The air duct 5 and handle 1 are each equipped with a temperature detection module for real-time monitoring of the temperature of the motor 7 and battery pack. When the temperature of the motor 7 or battery pack exceeds a preset threshold, the temperature detection module sends a signal to the control module. The control module automatically adjusts the speed of the motor 7 based on the received temperature information, or cuts off the power supply to the motor 7 if necessary, to achieve overheat protection, prevent equipment damage, and improve operational safety.

[0030] The control module includes a microcontroller unit (MCU) and a motor drive circuit. The microcontroller unit is used to receive adjustment signals input by the user through the knob 3 and convert the rotation angle or rotation amount of the knob 3 into corresponding wind speed control commands. At the same time, the microcontroller unit also processes signals from the temperature detection module to achieve safe control of the motor 7.

[0031] The motor drive circuit drives the motor 7 according to the control signal output by the microcontroller unit, thereby achieving stepless speed regulation of the fan. In this embodiment, the motor drive circuit can adopt a three-phase bridge drive circuit, which can precisely adjust the amplitude and phase of the three-phase current according to the control signal, thereby controlling the speed of the brushless DC motor 7. In this way, the fan can achieve continuous and smooth adjustment from low speed to high speed, meeting the user's needs for different wind intensities, while maintaining the efficiency and operational stability of the motor 7.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A variable speed brute fan, characterized by, Includes a handle (1) and a blower (5) connected to the handle (1). The handle (1) is equipped with a knob (3) and a display screen (2). The handle (1) contains a control module. The blower (5) contains a motor (7) connected to the control module. The knob (3) is electrically connected to the control module to achieve stepless adjustment of the speed of the motor (7) and the speed of the motor (7) is displayed in real time on the display screen (2).

2. A variable speed brute fan as claimed in claim 1, wherein, The knob (3) has a circular structure, and the display screen (2) is installed at the center of the circular knob (3).

3. A variable speed brute fan as set forth in claim 1, wherein, The knob (3) and the display screen (2) are respectively installed on the same side or different side surfaces of the handle (1).

4. A variable speed brute fan as set forth in claim 1, wherein, The outer surface of the knob (3) is provided with a first texture (301), and the air outlet of the air duct (5) is connected with an air outlet cap (4), and the outer surface of the air outlet cap (4) is provided with a second texture (401).

5. A variable speed brute fan as claimed in claim 4 wherein, The first texture (301) and the second texture (401) have the same shape, and the texture shape of the first texture (301) and the second texture (401) is a regular polygon or a star.

6. A variable speed brute fan as set forth in claim 1, wherein, The air duct (5) is provided with a guide shroud (6) near the air outlet. The outer diameter of the guide shroud (6) gradually decreases from the air inlet end to the air outlet end, and the cross-sectional shape of the guide shroud (6) near the air outlet end is arc-shaped. The inner wall size of the air duct (5) gradually decreases from the middle of the air duct (5) towards the air outlet, and the inner wall shape of the air duct (5) near the air outlet is arc-shaped. A ventilation gap (10) is formed between the guide shroud (6) and the inner wall of the air duct (5).

7. A variable speed brute fan as set forth in claim 1, wherein, The motor (7) has a fan blade (8) installed on its shaft end, and the air inlet plate (9) is installed at the air inlet end of the air duct (5). The mesh shape of the air inlet plate (9) is a regular polygon, rhombus, circle or ellipse.

8. A variable speed brute fan as set forth in claim 1, wherein, A switch button (11) is mounted on the surface of the handle (1).

9. A variable speed brute fan as set forth in claim 1, wherein, The air duct (5) is installed at the end of the handle (1), making the violent fan T-shaped, and the center of the two ends of the violent fan coincides with the center line of the handle (1); the outer wall of the air duct (5) is provided with a mounting groove (501), the root of the mounting groove (501) is arc-shaped, the end of the handle (1) extends outward in an arc shape to both sides and the inner wall forms an arc surface (101) that matches the shape of the root of the mounting groove (501), the end of the handle (1) is placed in the mounting groove (501) and connected to the air duct (5).

10. A variable speed brute fan as set forth in claim 1, wherein, The handle (1) has a built-in battery pack and power management module, configured to provide power to the violent fan; Temperature detection modules are respectively provided in the air duct (5) and the handle (1), which are configured to detect the temperature of the motor (7) and the battery pack respectively, and send a signal to the control module when the temperature is abnormal; The control module includes: The microcontroller unit is used to receive the adjustment signal from the knob (3), process the signal from the temperature detection module, and output the speed control signal of the motor (7); The motor drive circuit is used to drive the motor (7) according to the control signal output by the microcontroller unit to realize stepless speed regulation of the fan.

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