CN219509860U - Large-air-quantity type direct-current brushless centrifugal fan - Google Patents

Abstract

The utility model discloses a large-air-volume direct-current brushless centrifugal fan which comprises a fan blade protecting cover, a heat dissipation fan blade, a Hall plate, a PCB (printed circuit board), a patch Hall plate, a first wire frame, a stator, a second wire frame, a machine body, bolts, a rear end cover, a first bearing, a spring, a balance copper block, a magnet, a rotor sleeve, an O-shaped ring, a rotating shaft, a second bearing, a front end cover, a waterproof steam separation column, a lower fan cover, a fan blade and an upper fan cover, wherein the fan blade protecting cover is arranged on the machine body; the fan power part adopts a high-efficiency direct current brushless motor, the silicon steel sheet adopts a 0.35mm unoriented silicon steel sheet, the rotor magnet adopts high-temperature resistant sintered NdFeB, the motor shell adopts aviation aluminum profiles, the rear end is provided with forced air cooling, the heat dissipation is fast, and the motor efficiency is as high as 92%; the motor provided by the utility model provides a rotating speed and a torsion to drive the fan blades to rotate, the fan blades rotate to suck air and then throw the air out through centrifugal force, and the cavity is designed into an Archimedean spiral structure, so that the air flow resistance is small and the efficiency is high.

Description

Large-air-quantity type direct-current brushless centrifugal fan

Technical field:

the utility model relates to the technical field of fans, in particular to a large-air-quantity direct-current brushless centrifugal fan.

The background technology is as follows:

fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc. The fan is a machine which relies on input mechanical energy to raise the pressure of gas and discharge the gas, and is a driven fluid machine. The fan is a habit short for gas compression and gas conveying machinery in China, and the current fan has the advantages of simple general structure, unsmooth air flow, high resistance and low efficiency, so a technology is needed to make up for the defect.

The utility model comprises the following steps:

the utility model aims to solve the problems and provides a large-air-volume direct-current brushless centrifugal fan.

In order to solve the problems, the utility model provides a technical scheme that: a large-air-volume direct-current brushless centrifugal fan comprises a fan blade protective cover, heat dissipation fan blades, a Hall plate, a PCB board, a patch Hall plate, a first wire frame, a stator, a second wire frame, a machine body, bolts, a rear end cover, a first bearing, springs, balance copper blocks, magnets, a rotor sleeve, O-shaped rings, a rotating shaft, a second bearing, a front end cover, a waterproof air separation column, a lower fan cover, fan blades and an upper fan cover; the lower fan cover and the upper fan cover are fixedly connected together through screws, and the fan blades are arranged between the lower fan cover and the upper fan cover; the right end of the lower fan housing is connected with a machine body; the right end of the machine body is connected with a fan blade protection cover, and a heat dissipation fan blade is arranged in the fan blade protection cover; the machine body is internally provided with a front end cover and a rear end cover, the front end cover and the rear end cover are connected together through bolts, and two ends of the rotating shaft are movably connected in the front end cover and the rear end cover through a first bearing and a second bearing; the left side of the front end cover is provided with a water vapor proof partition column, and an O-shaped ring is arranged between the front end cover and the rear end cover; the middle end of the machine body is fixedly connected with a stator, a first wire frame and a second wire frame are respectively arranged on two sides of the stator, a Hall plate is arranged on the first wire frame, and a PCB (printed circuit board) and a patch Hall are arranged on the Hall plate; two ends of the rotating shaft are connected with the radiating fan blades and the wind blades; and the rotating shaft is also connected with a spring, a balance copper block, a magnet and a rotor sleeve.

Preferably, the spring is a wave spring.

Preferably, the O-ring is a rubber O-ring.

Preferably, the outer surface of the machine body is provided with cooling fins.

The utility model has the beneficial effects that:

(1) The fan power part of the utility model adopts a high-efficiency DC brushless motor, the silicon steel sheet adopts a 0.35mm unoriented silicon steel sheet, the rotor magnet adopts high-temperature resistant sintered NdFeB, the motor casing adopts aviation aluminum section, the rear end is provided with forced air cooling, the heat dissipation is fast, and the motor efficiency is as high as 92%.

(2) The motor provided by the utility model provides a rotating speed and a torsion to drive the fan blades to rotate, the fan blades rotate to suck air and then throw the air out through centrifugal force, and the cavity is designed into an Archimedean spiral structure, so that the air flow resistance is small and the efficiency is high.

(3) The fan shell is precisely machined and molded by adopting the die casting, is firm and reliable, has a riveting structure, is light in weight, adopts a ball bearing design, is maintenance-free throughout the life of 20000 hours, is provided with the water outlet on the side surface, can suck a small amount of liquid water, does not form a stacking phenomenon after the liquid water is sucked, adopts a detachable flange design, is convenient for customers to compatible with various interfaces, and adopts an evenly distributed design for mounting interfaces, thereby being convenient for the customers to mount various angles.

(4) The motor shaft and fan blade direct connection design has the advantages of simple and reliable structure, easy production and assembly and laying a good foundation for batch automatic production.

(5) The running speed of the fan of the utility model is up to 15000rpm, the vibration is small, the noise is low, and the air quantity is up to 400m ³ And/h, the wind pressure reaches 7kpa, the fan efficiency reaches 45%, and the fan can be suitable for various large-wind-quantity demand applications.

Description of the drawings:

fig. 1 is a schematic structural view of the present utility model.

The specific embodiment is as follows:

as shown in fig. 1, the present embodiment adopts the following technical scheme: the large-air-volume direct-current brushless centrifugal fan comprises a fan blade protective cover 2, a heat dissipation fan blade 3, a Hall plate 6, a PCB 7, a patch Hall 8, a first wire frame 9, a stator 10, a second wire frame 11, a machine body 12, a bolt 13, a rear end cover 15, a first bearing 16, a spring 17, a balance copper block 18, a magnet 19, a rotor sleeve 20, an O-shaped ring 21, a rotating shaft 22, a second bearing 24, a front end cover 26, a waterproof steam separation column 27, a lower fan cover 28, a fan blade 30 and an upper fan cover 32; the lower fan cover 28 and the upper fan cover 32 are fixedly connected together through screws, and the fan blades 30 are arranged between the lower fan cover 28 and the upper fan cover 32; the right end of the lower fan housing 28 is connected with the machine body 12; the right end of the machine body 12 is connected with a fan blade protection cover 2, and a heat dissipation fan blade 3 is arranged in the fan blade protection cover 2; the machine body 12 is internally provided with a front end cover 26 and a rear end cover 15, the front end cover 26 and the rear end cover 15 are connected together through bolts 13, and two ends of the rotating shaft 22 are movably connected in the front end cover 26 and the rear end cover 15 through a first bearing 16 and a second bearing 24; the left side of the front end cover 26 is provided with a waterproof vapor separation column 27, and an O-shaped ring 21 is arranged between the front end cover 26 and the rear end cover 15; a stator 10 is fixedly connected to the middle end of the machine body 12, a first wire frame 9 and a second wire frame 11 are respectively arranged on two sides of the stator 10, a Hall plate 6 is arranged on the first wire frame 9, and a PCB 7 and a patch Hall 8 are arranged on the Hall plate 6; two ends of the rotating shaft 22 are connected with the heat dissipation fan blade 3 and the fan blade 30; the rotating shaft 22 is also connected with a spring 17, a balance copper block 18, a magnet 19 and a rotor sleeve 20.

Wherein the spring 17 is a wave spring; the O-shaped ring 21 is a rubber O-shaped ring; the outer surface of the machine body 12 is provided with cooling fins.

The utility model has the advantages that: the fan power part adopts a high-efficiency direct current brushless motor, the silicon steel sheet adopts a 0.35mm unoriented silicon steel sheet, the rotor magnet adopts high-temperature resistant sintered NdFeB, the motor shell adopts aviation aluminum profiles, the rear end is provided with forced air cooling, the heat dissipation is fast, and the motor efficiency is as high as 92%; the motor provided by the utility model provides the rotating speed and the torsion to drive the fan blade to rotate, the fan blade rotates to suck air and then is thrown out through centrifugal force, the cavity is designed into an Archimedean spiral structure, the air flow resistance is small, and the efficiency is high; the fan shell is precisely machined and formed by adopting the die casting, is firm and reliable, has a riveting structure, is light in weight, adopts a ball bearing design, is maintenance-free throughout the life of 20000 hours, is provided with the water outlet on the side surface, can suck a small amount of liquid water, does not form a stacking phenomenon after the liquid water is sucked, adopts a detachable flange design, is convenient for customers to compatible with various interfaces, and is convenient for the customers to install various installation angles; the motor shaft and fan blade direct connection design is simple and reliable in structure, easy to produce and assemble, and lays a good foundation for batch automatic production; the running speed of the fan of the utility model is up to 15000rpm, the vibration is small, the noise is low, and the air quantity is up to 400m ³ And/h, the wind pressure reaches 7kpa, the fan efficiency reaches 45%, and the fan can be suitable for various large-wind-quantity demand applications.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims and their equivalents.

The control mode of the utility model is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power supply are common knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and the wiring arrangement in detail.

Claims (4)

1. A large-air-volume direct-current brushless centrifugal fan is characterized in that: the novel fan blade cooling device comprises a fan blade protection cover (2), cooling fan blades (3), a Hall plate (6), a PCB (printed circuit board), a patch Hall (8), a first wire frame (9), a stator (10), a second wire frame (11), a machine body (12), bolts (13), a rear end cover (15), a first bearing (16), a spring (17), a balance copper block (18), a magnet (19), a rotor sleeve (20), an O-shaped ring (21), a rotating shaft (22), a second bearing (24), a front end cover (26), a waterproof air separation column (27), a lower fan cover (28), fan blades (30) and an upper fan cover (32);

the lower fan cover (28) and the upper fan cover (32) are fixedly connected together through screws, and the fan blades (30) are arranged between the lower fan cover (28) and the upper fan cover (32);

the right end of the lower fan housing (28) is connected with a machine body (12);

the right end of the machine body (12) is connected with a fan blade protection cover (2), and a heat dissipation fan blade (3) is arranged in the fan blade protection cover (2);

a front end cover (26) and a rear end cover (15) are arranged in the machine body (12), the front end cover (26) and the rear end cover (15) are connected together through bolts (13), and two ends of the rotating shaft (22) are movably connected in the front end cover (26) and the rear end cover (15) through a first bearing (16) and a second bearing (24);

the left side of the front end cover (26) is provided with a waterproof vapor separation column (27), and an O-shaped ring (21) is arranged between the front end cover (26) and the rear end cover (15);

a stator (10) is fixedly connected to the middle end of the machine body (12), a first wire frame (9) and a second wire frame (11) are respectively arranged on two sides of the stator (10), a Hall plate (6) is arranged on the first wire frame (9), and a PCB (printed circuit board) and a patch Hall (8) are arranged on the Hall plate (6);

two ends of the rotating shaft (22) are connected with the radiating fan blades (3) and the fan blades (30);

the rotating shaft (22) is also connected with a spring (17), a balance copper block (18), a magnet (19) and a rotor sleeve (20).

2. The large-air-volume type direct-current brushless centrifugal fan according to claim 1, wherein: the spring (17) is a wave spring.

3. The large-air-volume type direct-current brushless centrifugal fan according to claim 1, wherein: the O-shaped ring (21) is a rubber O-shaped ring.

4. The large-air-volume type direct-current brushless centrifugal fan according to claim 1, wherein: and the outer surface of the machine body (12) is provided with cooling fins.