Large-torque fan with starting acceleration function

Abstract

The large-torque fan with the starting acceleration function comprises a fan pump shell, a fan motor, fan blades and a rotating shaft, the driving end of the fan motor is connected with the rotating shaft, the fan blades are arranged on the rotating shaft in a sleeved mode, the fan blades and the fan motor are embedded in the fan pump shell, and the fan motor is connected with the fan pump shell. A speed regulating and force applying structure is arranged between the fan pump shell and the rotating shaft; the utility model relates to the technical field of fans, in particular to a large-torque fan with a starting acceleration function, when the large-torque fan with the starting acceleration function is started, auxiliary thrust is formed and the torque of a main shaft is improved through the magnetic action of an electromagnet and a permanent magnet block, so that the torque of a rotating shaft of the fan is increased, the acceleration trend of the main shaft is improved, and the rotating shaft can reach the rated rotating speed more quickly; driving pressure of a motor driving shaft is reduced, and structural reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a large torque fan with a starting acceleration function. Background Art

[0002] Fans are a common type of machinery frequently used in modern life and production. They are usually used for ventilation of indoor rooms or factory buildings, or to guide exhaust gas through. In the application of exhaust fans, automatic control is usually adopted. During the startup of the fan, it is currently mostly driven by direct motor drive. This method has a slow acceleration time. It takes a long time to reach the rated speed, and the pressure on the main shaft of the fan is relatively large. Moreover, for fans with large torque, the speed increase is even slower. It takes a very long time to reach the rated speed. In view of this, in-depth research was conducted on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a large torque fan with a starting acceleration function, which solves the existing background technology problems.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a high-torque fan with a starting acceleration function, comprising a fan pump housing, a fan motor, fan blades and a rotating shaft, the driving end of the fan motor is connected to the rotating shaft, the fan blades are sleeved on the rotating shaft, the fan blades and the fan motor are embedded in the fan pump housing, and a speed regulating and boosting structure is provided between the fan pump housing and the rotating shaft;

[0005] The speed regulating and boosting structure comprises: a plurality of permanent magnet blocks, sleeve slots, a plurality of electromagnets, a controller, a laser transmitter and a laser receiver;

[0006] A plurality of permanent magnet blocks are sleeved on the rotating shaft, and the plurality of permanent magnet blocks are arranged in a circular array on the outside of the rotating shaft. A sleeve groove is provided on one side of the fan pump housing and sleeved on the outside of the rotating shaft. A plurality of electromagnets are arranged in a circular array on the inside of the sleeve groove. The plurality of electromagnets are respectively connected to a controller. A laser transmitter is provided on the rotating shaft and located between a pair of adjacent permanent magnet blocks. A laser receiver is provided on the inside of the sleeve groove corresponding to the laser transmitter.

[0007] Preferably, a planetary gearbox is provided between the rotating shaft and the fan motor.

[0008] Preferably, the fan motor and the planetary gearbox are wrapped with a protective cover on the outside.

[0009] Preferably, a first flange plate is provided at the end of the protective cover shell, and a second flange plate is provided on the corresponding sleeve groove, and the first flange plate and the second flange plate are connected by a plurality of tension bolts.

[0010] Preferably, the fan blades are sleeved on the ends of the rotating shaft and a pair of limiting hoops are provided on both sides.

[0011] Preferably, the sleeve groove is a plate with an annular structure and is connected to the axis of the fan pump housing.

[0012] Beneficial Effects

[0013] The utility model provides a high-torque fan with a start-up acceleration function. The utility model has the following beneficial effects: when starting, the high-torque fan with a start-up acceleration function generates an auxiliary thrust through the magnetic force of the electromagnet and the permanent magnet block, thereby increasing the torque of the main shaft, thereby increasing the torque of the fan's rotating shaft, improving the acceleration trend of the main shaft, allowing the rotating shaft to reach the rated speed faster, reducing the driving pressure of the motor drive shaft, and improving the structural reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a high-torque fan with a starting and acceleration function described in the utility model.

[0015] Figure 2 It is a side structural schematic diagram of a high-torque fan with a starting acceleration function described in the utility model.

[0016] Figure 3 It is a schematic diagram of the top view of the structure of a high-torque fan with a starting acceleration function described in the utility model.

[0017] In the figure: 1. fan pump casing; 2. fan motor; 3. fan blades; 4. rotating shaft; 5. permanent magnet block; 6. sleeve groove; 7. electromagnet; 8. controller; 9. laser transmitter; 10. laser receiver; 11. planetary gear box; 12. protective cover; 13. first flange plate; 14. second flange plate; 15. tension bolts; 16. limit hoop. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment: According to the specification attached Figure 1-3It can be seen that the present case is a high-torque fan with a starting acceleration function, comprising a fan pump casing 1, a fan motor 2, fan blades 3 and a rotating shaft 4. The driving end of the fan motor 2 is connected to the rotating shaft 4, and the fan blades 3 are sleeved on the rotating shaft 4. The fan blades 3 and the fan motor 2 are embedded in the fan pump casing 1, and a speed regulating and forcing structure is provided between the fan pump casing 1 and the rotating shaft 4. In a specific implementation process, the fan pump casing 1 is connected to the fan motor 2, and the fan motor 2 drives the fan blades 3 to rotate through the rotating shaft 4, so that the fan blades 3 rotate to form air supply. A speed regulating and forcing structure is provided between the fan pump casing 1 and the fan blades 3, which is used to drive the fan blades 3 to transition to a predetermined power stage more smoothly and quickly, thereby reducing the impact on the fan motor 2.

[0020] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned speed regulating force adding structure includes: a plurality of permanent magnet blocks 5, a sleeve slot 6, a plurality of electromagnets 7, a controller 8, a laser transmitter 9 and a laser receiver 10, and their connection relationship and position relationship are as follows;

[0021] A plurality of permanent magnet blocks 5 are sleeved on the rotating shaft 4, and the plurality of permanent magnet blocks are arranged in a ring array on the outside of the rotating shaft 4. A sleeve groove 6 is provided on one side of the fan pump housing 1 and sleeved on the outside of the rotating shaft 4. A plurality of electromagnets 7 are arranged in a ring array inside the sleeve groove 6. The plurality of electromagnets 7 are respectively connected to a controller 8. A laser transmitter 9 is provided on the rotating shaft 4 and between a pair of adjacent permanent magnet blocks 5. A laser receiver 10 is provided inside the sleeve groove 6 and corresponds to the laser transmitter 9.

[0022] In the specific implementation process, the permanent magnet blocks 5 on the rotating shaft 4 rotate synchronously with the fan blades 3 and the rotating shaft 4. When the fan is adjusted to control the air volume, the laser transmitter 9 and the laser receiver 10 are synchronously started while the signal is transmitted to the fan motor 2. When the laser receiver 10 is in the same position as the laser transmitter 9, as the initial angle, after the fan motor 2 rotates a certain angle, the corresponding electromagnet 7 and the permanent magnet block 5 are staggered by a certain angle, and the controller 8 controls the electromagnet 7 to be energized, so that the electromagnet 7 and the permanent magnet block 5 have opposite magnetism at the opposite ends, thereby causing the electromagnet 7 and the permanent magnet block 5 to generate a repulsive force, thereby pushing the permanent magnet block 5 to pass through at an accelerated speed, and then close. After the permanent magnet block 5 at the next position is guided again, the electromagnet 7 is started again to push the permanent magnet block 5 through, thereby providing thrust for the acceleration of the motor. Conversely, when the output power is reduced, the electromagnet 7 is controlled to generate a magnetic field opposite to the outer end of the permanent magnet block 5 to slow down the passage of the permanent magnet block 5. In this way, the output torque of the fan motor 2 is increased when it is started, and the acceleration and deceleration are assisted, thereby increasing the starting rate of the fan motor 2.

[0023] As a preferred solution, further, a planetary gear box 11 is provided between the rotating shaft and the fan motor 2 to increase the output torque of the rotating shaft.

[0024] As a preferred solution, further, the outside of the fan motor 2 and the planetary gear box 11 are wrapped with a protective cover 12 to protect the fan motor 2 and the planetary gear box 11.

[0025] As a preferred solution, further, a first flange plate 13 is provided at the end of the protective cover shell 12, and a second flange plate 14 is provided on the corresponding sleeve groove 6. The first flange plate 13 and the second flange plate 14 are connected by a plurality of tension bolts 15, so that the protective cover shell 12 is integrally connected to the fan pump shell 1 for easy installation.

[0026] As a preferred solution, further, the fan blades 3 are sleeved on the ends of the rotating shaft 4 and a pair of limiting hoops 16 are provided on both sides for limiting the positions of the fan blades 3 .

[0027] As a preferred solution, further, the sleeve groove 6 is a plate with an annular structure and is connected to the axis of the fan pump housing 1.

[0028] From the above, it can be generally known that when starting, the high-torque fan with starting acceleration function forms an auxiliary thrust through the magnetic force of the electromagnet and the permanent magnet block, thereby increasing the torque of the main shaft, thereby increasing the torque of the fan's rotating shaft, improving the acceleration trend of the main shaft, and enabling the rotating shaft to reach the rated speed faster, reducing the driving pressure of the motor drive shaft, and improving structural reliability.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-torque fan with a starting acceleration function, comprising a fan pump housing (1), a fan motor (2), a fan blade (3) and a rotating shaft (4), wherein the driving end of the fan motor (2) is connected to the rotating shaft (4), the fan blade (3) is sleeved on the rotating shaft (4), the fan blade (3) and the fan motor (2) are embedded in the fan pump housing (1), characterized in that: A speed regulating and force-adding structure is provided between the fan pump housing (1) and the rotating shaft (4); The speed regulating and force-adding structure comprises: a plurality of permanent magnet blocks (5), a sleeve slot (6), a plurality of electromagnets (7), a controller (8), a laser transmitter (9) and a laser receiver (10); A plurality of permanent magnet blocks (5) are sleeved on the rotating shaft (4), and the plurality of permanent magnet blocks are arranged in a ring array on the outer side of the rotating shaft (4); a sleeve groove (6) is provided on one side of the fan pump housing (1) and sleeved on the outer side of the rotating shaft (4); a plurality of electromagnets (7) are arranged in a ring array on the inner side of the sleeve groove (6); the plurality of electromagnets (7) are respectively connected to a controller (8); a laser transmitter (9) is provided on the rotating shaft (4) and located between a pair of adjacent permanent magnet blocks (5); a laser receiver (10) is provided on the inner side of the sleeve groove (6) and corresponds to the laser transmitter (9); A planetary gear box (11) is provided between the rotating shaft and the fan motor (2) for connection.

2. A high torque fan with a starting acceleration function according to claim 1, characterized in that: The fan motor (2) and the planetary gear box (11) are wrapped with a protective cover (12) on the outside.

3. A high torque fan with a starting acceleration function according to claim 2, characterized in that: A first flange plate (13) is provided at the end of the protective cover shell (12), and a second flange plate (14) is provided on the corresponding sleeve groove (6), and the first flange plate (13) and the second flange plate (14) are connected by a plurality of tension bolts (15).

4. A high torque fan with a starting acceleration function according to claim 1, characterized in that: The fan blade (3) is sleeved on the end of the rotating shaft (4) and a pair of limiting hoops (16) are provided on both sides.

5. The high torque fan with starting acceleration function according to claim 1, characterized in that: The sleeve groove (6) is a plate with an annular structure and is connected to the axis of the fan pump casing (1).

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