Axial flow fan

Abstract

An axial flow fan comprises a shell, a motor and fan blades, a motor support is arranged in the shell, the motor is arranged on the motor support, the fan blades are fixed to a motor rotating shaft of the motor, and the axial flow fan is characterized in that a driver and a rectifier are arranged in the shell, the motor is electrically connected with the driver and the rectifier, and the motor is electrically connected with the rectifier. A function switch is arranged on the periphery of the outer shell, the function switch is connected with the driver and the rectifier, a power port is arranged outside the outer shell, the power port is connected with the function switch, the power port is controlled to be connected with the driver or the rectifier by operating the function switch, and the motor is a permanent magnet brushless direct current motor. By using the permanent magnet brushless motor, the generation of sparks can be avoided, so that the axial flow fan can be used in an environment with combustible gas, and the blowing function and the charging function of the axial flow fan are controlled by controlling whether the power supply port is connected with the driver or the monthly rectifier through the function switch.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and specifically to an axial flow fan. Background Technology

[0002] Axial flow fans are a type of fan in which the airflow direction is parallel to the axis of rotation of the fan blades. They circulate air by rotating the fan blades and can be used for ventilation and exhaust in general factories, warehouses, offices and other places to facilitate air circulation.

[0003] The invention with application number 2024113835332 discloses an axial flow fan, including a fan frame and a motor. A mounting base is fixed inside the fan frame, and a mounting bracket is fixedly connected to the top of the mounting base. The motor is fixed on the mounting bracket, and a fan is connected to the output end of the motor.

[0004] Existing axial flow fans have the following problems:

[0005] 1. In existing axial flow fan technology, the motors are typically designed for fixed voltages, generally used indoors. When outdoor use is required, compatible power supplies may not be available, limiting their usability. 2. In environments containing flammable gases, such as mines, air circulation is essential. While axial flow fans can facilitate airflow, the motors used in current axial flow fans generate sparks during operation. Contact between flammable gases and these sparks can lead to explosions, posing a safety hazard. Therefore, these axial flow fans cannot be used in environments containing flammable gases. 3. Existing axial flow fans only provide ventilation and exhaust, offering a relatively limited function. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an axial flow fan that can be used in various environments and has more functions.

[0007] An axial flow fan includes a housing, a motor, and fan blades. A motor support is housed within the housing, and the motor is mounted on the motor support. The fan blades are fixed to the motor shaft. The fan is characterized by: a driver and a rectifier being housed within the housing; the motor being electrically connected to the driver and rectifier; a function switch being located around the housing and connected to the driver and rectifier; and a power port being located outside the housing and connected to the function switch. The power port is connected to the driver or rectifier by operating the function switch. The motor is a permanent magnet brushless DC motor.

[0008] This axial flow fan uses a function switch to control whether the power port is connected to the driver or the rectifier. When the power port is connected to the driver, the motor starts working, driving the fan blades to rotate and providing airflow. When connected to the rectifier, a battery or other energy storage device is connected to the power port, generating AC power. The rectifier converts this AC power to DC power to charge the connected energy storage device. This design uses a permanent magnet brushless motor as the drive mechanism, which can be powered by 12V, 24V, 48V, 60V, 72V, 84V, 96V, 120V, and 220V power supplies, including common power sources such as vehicle batteries and solar power. The permanent magnet brushless motor does not produce sparks during operation and can be used even in environments with flammable gases, making it safer and suitable for a wider range of environments.

[0009] The outer casing is equipped with a handle, the function switch is located on the handle, and the power port is located on the handle. The handle allows the axial flow fan to be easily lifted and carried with one hand.

[0010] The function switch is a toggle switch, located inside the handle. When lifting the axial flow fan, the function can be adjusted simply by toggling the switch with a finger; operation is simple and convenient.

[0011] The outer casing is provided with support feet, and the support feet are provided with through holes. The support feet are used to support the axial flow fan, so that the axial flow fan can be placed stably, and the through holes allow the axial flow fan to be suspended for use.

[0012] Rubber pads are provided on the support legs. The rubber pads can absorb shock and allow the axial flow fan to be placed more stably.

[0013] Compared with the prior art, the shoe sole injection molding machine of this utility model has the following advantages:

[0014] This solution uses a permanent magnet brushless motor as the drive mechanism, which can be connected to 12V, 24V, 48V, 60V, 72V, 84V, 96V, 120V, and 220V power supplies. It can be powered by common power sources such as vehicle batteries and solar power. The permanent magnet brushless motor does not produce sparks during use and can be used in environments with flammable gases, making it safer and suitable for a wider range of environments, including shipboard operations, tidal flat operations, sewage pipe network ventilation and oxygen supply, and vehicle-mounted self-contained cooling.

[0015] In this design, the axial flow fan uses a function switch to control whether the power port is connected to the driver or the rectifier. When the power port is connected to the driver, the motor starts working and drives the fan blades to rotate, thus enabling the axial flow fan to blow air. When connected to the rectifier, a battery or other energy storage device that needs charging is connected to the power port. The rotating fan blades generate alternating current, which is converted to direct current by the rectifier to charge the energy storage device connected to the power port. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the axial flow fan of this utility model;

[0017] Figure 2 This is a side view of the axial flow fan of this utility model;

[0018] Figure 3 This is a side sectional view of the present invention;

[0019] Figure 4 This is a rear view schematic diagram of the present invention;

[0020] In the diagram, 1. Housing, 11. Motor bracket, 12. Driver, 13. Rectifier, 14. Support foot, 141. Through hole, 142. Rubber pad, 2. Motor, 21. Fan blade, 22. Motor shaft, 3. Function switch, 4. Power port, 5. Handle. Detailed Implementation

[0021] like Figure 1-4 As shown, an axial flow fan includes a housing 1, a motor 2, and fan blades 21. A motor support 11 is installed inside the housing 1, and the motor 2 is mounted on the motor support 11. The fan blades 21 are fixed to the motor shaft 22 of the motor 2. The fan is characterized by: a driver 12 and a rectifier 13 being installed inside the housing 1; the motor 2 being electrically connected to both the driver 12 and the rectifier 13; a function switch 3 being installed around the housing 1, connected to both the driver 12 and the rectifier 13; and a power port 4 being installed outside the housing 1, connected to the function switch 3. The power port 4 is connected to either the driver 12 or the rectifier 13 by operating the function switch 3. The motor 2 is a permanent magnet brushless DC motor.

[0022] In this design, the axial flow fan uses function switch 3 to control whether the power port 4 is connected to the driver 12 or the rectifier 13. When the power port 4 is connected to the driver 12, power is supplied to the power port 4, and the motor 2 starts working, driving the fan blades 21 to rotate, thus realizing the function of the axial flow fan blowing air. When connected to the rectifier 13, a battery or other energy storage device that needs charging is connected to the power port 4, causing the fan blades 21 to rotate and generate AC power. The rectifier 13 converts the AC power into DC power to charge the energy storage device connected to the power port 4. This design uses a permanent magnet brushless motor as the drive mechanism, which can be connected to 12V, 24V, 48V, 60V, 72V, 84V, 96V, 120V, and 220V power supplies. It can be powered by common power sources such as vehicle batteries and solar power. The permanent magnet brushless motor does not produce sparks during use and can be used in environments with flammable gases, making it safer and applicable to a wider range of environments.

[0023] like Figure 1-3 As shown, a handle 5 is provided on the outer casing 1, the function switch 3 is a toggle switch, the function switch 3 is located on the inside of the handle 5, and the power port 4 is located on the handle 5.

[0024] The handle 5 makes it easy to lift and carry the axial flow fan with one hand; when lifting the axial flow fan, you can adjust the function by simply flicking the function switch 3 with your finger, making the operation simple and convenient.

[0025] like Figure 1-4 As shown, the outer casing 1 is provided with a support leg 14, the support leg 14 is provided with a through hole 141, and the support leg 14 is provided with a rubber pad 142.

[0026] The support leg 141 is used to support the axial flow fan, so that the axial flow fan can be placed stably. The through hole 141 allows the axial flow fan to be suspended for use. The rubber pad 142 can play a shock absorption role, so that the axial flow fan can be placed more stably.

[0027] The above examples are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those familiar with this project to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made according to this utility model should be included within the protection scope of this utility model.

Claims

1. An axial flow fan, comprising a housing (1), a motor (2), and fan blades (21), wherein a motor bracket (11) is disposed inside the housing (1), the motor (2) is disposed on the motor bracket (11), and the fan blades (21) are fixed on the motor shaft (22) of the motor (2), characterized in that: The housing (1) is equipped with a driver (12) and a rectifier (13). The motor (2) is electrically connected to the driver (12) and the rectifier (13) respectively. The housing (1) is equipped with a function switch (3) on its periphery. The function switch (3) is connected to the driver (12) and the rectifier (13). The housing (1) is equipped with a power port (4) on its periphery. The power port (4) is connected to the function switch (3). By operating the function switch (3), the power port (4) is controlled to connect to the driver (12) or the rectifier (13). The motor (2) is a permanent magnet brushless DC motor.

2. An axial flow fan as described in claim 1, characterized in that: The outer casing (1) is provided with a handle (5), the function switch (3) is provided on the handle (5), and the power port (4) is provided on the handle (5).

3. An axial flow fan as described in claim 2, characterized in that: The function switch (3) is a toggle switch, and the function switch (3) is located on the inside of the handle (5).

4. An axial flow fan as described in claim 1, characterized in that: The outer casing (1) is provided with a support foot (14), and the support foot (14) is provided with a through hole (141).

5. An axial flow fan as described in claim 4, characterized in that: A rubber pad (142) is provided on the support leg (14).

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