CN219176589U - DC brushless vortex fan for large fuel cell - Google Patents

Abstract

The utility model discloses a direct current brushless vortex fan for a large fuel cell, which comprises a fan blade protective cover, a heat dissipation fan blade, a machine body, a stator, a wire frame, screws, a flange joint, an O-shaped ring, a fan blade, a nut, a front cover, a rear end cover, a first bearing, a spring, a clamp spring, a rotor steel sleeve, a magnet, a rotor iron core, a rotating shaft, a rear cover, a second bearing and a threaded ring front end cover, wherein the fan blade 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 splicing structure, the full rate of an enamelled wire groove is high, the rotor magnet adopts high-temperature resistant sintered NdFeB, the air gap between the surface-mounted structure and the tooth part of the stator is small, the magnetic flux is large, 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 rotating speed and torque force to drive the fan blades to rotate, the fan blades rotate to suck air and then carry out vortex pressurization for a plurality of times in the interior, the cavity is designed into a U-shaped structure, the air flow is smooth, the resistance is small, and the efficiency is high.

Description

DC brushless vortex fan for large fuel cell

Technical field:

the utility model relates to the technical field of fans, in particular to a direct-current brushless vortex fan for a large-scale fuel cell.

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 present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a dc brushless swirl fan for a large-sized fuel cell.

In order to solve the problems, the utility model provides a technical scheme that: a DC brushless vortex fan for a large-scale fuel cell comprises a fan blade protective cover, a heat dissipation fan blade, a machine body, a stator, a wire frame, screws, flange joints, O-shaped rings, fan blades, nuts, a front cover, a rear end cover, a first bearing, springs, clamp springs, a rotor steel sleeve, a magnet, a rotor iron core, a rotating shaft, a rear cover, a second bearing and a threaded ring front end cover; the front cover and the rear cover are fixedly connected together through screws, and fan blades are arranged in the front cover and the rear cover; the side surfaces of the front cover and the rear cover are fixedly connected with flange joints through screws, and O-shaped rings are arranged between the flange joints and the front cover and between the flange joints and the rear cover; the right end of the rear cover is fixedly connected with a machine body through a screw, the right end of the machine body is fixedly connected with a rear end cover through a screw, and the right end of the rear end cover is fixedly connected with a fan blade protecting cover through a screw; the fan blade protective cover is internally provided with a heat dissipation fan blade; a stator is fixedly connected in the machine body, and both sides of the stator are provided with wire frames; the two ends of the rotating shaft are movably connected in the machine body through a first bearing and a second bearing; a rotor core is fixedly connected to the middle end of the rotating shaft; the right end of the rotating shaft is connected with the heat dissipation fan blade, and the left end of the rotating shaft is connected with the fan blade through a threaded ring front end cover and a nut; and the rotating shaft is also connected with a spring, a clamp spring, a rotor steel sleeve and a magnet.

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 splicing structure, the full rate of an enamelled wire groove is high, the rotor magnet adopts high-temperature resistant sintered NdFeB, the air gap between the surface-mounted structure and the tooth part of the stator is small, the magnetic flux is large, 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%.

(2) The motor provided by the utility model provides rotating speed and torque force to drive the fan blades to rotate, the fan blades rotate to suck air and then carry out vortex pressurization for a plurality of times in the interior, the cavity is designed into a U-shaped structure, the air flow is smooth, the resistance is small, and the efficiency is high.

(3) The fan shell and the impeller are precisely machined and formed, and the axial air gap and the radial air gap of the rotating part are less than 0.15mm. The ball bearing design is adopted, the maintenance is free for the whole life, and the service life can reach 20000 hours. The detachable flange design is adopted for the air inlet and the air outlet, so that customers can be facilitated to be compatible with various interfaces, the fan adopts a noninductive design, electric circuit components are reduced, and the operation stability and reliability are improved.

(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 is up to 15000rpm, the vibration is small, the noise is low, and the air quantity is up to 70m ³ And/h, the wind pressure reaches 30kpa, the fan efficiency reaches 42%, and the air conditioner is small in volume and applicable to oxygen supply fans of various commercial fuel cells.

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 direct current brushless vortex fan for the large fuel cell comprises a fan blade protective cover 2, a heat dissipation fan blade 3, a machine body 6, a stator 7, a wire frame 8, screws 9, a flange joint 10, an O-shaped ring 11, a fan blade 12, a nut 13, a front cover 14, a rear end cover 15, a first bearing 16, a spring 17, a clamp spring 18, a rotor steel sleeve 19, a magnet 20, a rotor iron core 21, a rotating shaft 22, a rear cover 24, a second bearing 25 and a threaded ring front end cover 26; the front cover 14 and the rear cover 24 are fixedly connected together through screws, and fan blades 12 are arranged in the front cover 14 and the rear cover 24; the side surfaces of the front cover 14 and the rear cover 24 are fixedly connected with a flange joint 10 through screws, and an O-shaped ring 11 is arranged between the flange joint 10 and the front cover 14 and the rear cover 24; the right end of the rear cover 24 is fixedly connected with the machine body 6 through a screw, the right end of the machine body 6 is fixedly connected with the rear end cover 15 through a screw, and the right end of the rear end cover 15 is fixedly connected with the fan blade protecting cover 2 through a screw; the fan blade protection cover 2 is internally provided with a heat dissipation fan blade 3; a stator 7 is fixedly connected in the machine body 6, and a wire frame 8 is arranged on two sides of the stator 7; the two ends of the rotating shaft 22 are movably connected in the machine body 6 through a first bearing 16 and a second bearing 25; a rotor core 21 is fixedly connected to the middle end of the rotating shaft 22; the right end of the rotating shaft 22 is connected with the heat dissipation fan blade 3, and the left end of the rotating shaft 22 is connected with the fan blade 12 through a threaded ring front end cover 26 and a nut 13; the rotating shaft 22 is also connected with a spring 17, a clamp spring 18, a rotor steel sleeve 19 and a magnet 20.

Wherein the spring 17 is a wave spring; the O-shaped ring 11 is a rubber O-shaped ring; and the outer surface of the machine body 6 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 splicing structure, the full rate of an enamelled wire groove is high, the rotor magnet adopts high-temperature resistant sintered NdFeB, the air gap between the surface-mounted structure and the tooth part of the stator is small, the magnetic flux is large, 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 torque to drive the fan blades to rotate, the fan blades rotate to suck air and then carry out vortex pressurization for a plurality of times in the interior, the cavity is designed into a U-shaped structure, the air flow is smooth, the resistance is small, and the efficiency is high; the fan shell and the impeller are precisely machined and formed, and the axial air gap and the radial air gap of the rotating part are less than 0.15mm. The ball bearing design is adopted, the maintenance is free for the whole life, and the service life can reach 20000 hours. The detachable flange design is adopted for the air inlet and the air outlet, so that customers are convenient to be compatible with various interfaces, the fan adopts the noninductive design, the electric circuit components are reduced, and the operation stability and the reliability are improved; 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 is up to 15000rpm, the vibration is small, the noise is low, the air quantity is up to 70m3/h, the air pressure is up to 30kpa, the efficiency of the fan is up to 42%, and the fan has small volume and can be suitable for various commercial fuel cell oxygen supply fans.

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 DC brushless vortex fan for a large-scale fuel cell is characterized in that: the novel heat dissipation fan comprises a fan blade protection cover (2), a heat dissipation fan blade (3), a machine body (6), a stator (7), a wire frame (8), screws (9), a flange joint (10), an O-shaped ring (11), a fan blade (12), a nut (13), a front cover (14), a rear end cover (15), a first bearing (16), a spring (17), a clamp spring (18), a rotor steel sleeve (19), a magnet (20), a rotor iron core (21), a rotating shaft (22), a rear cover (24), a second bearing (25) and a threaded ring front end cover (26);

the front cover (14) and the rear cover (24) are fixedly connected together through screws, and fan blades (12) are arranged in the front cover (14) and the rear cover (24);

the side surfaces of the front cover (14) and the rear cover (24) are fixedly connected with a flange joint (10) through screws, and an O-shaped ring (11) is arranged between the flange joint (10) and the front cover (14) and the rear cover (24);

the right end of the rear cover (24) is fixedly connected with the machine body (6) through a screw, the right end of the machine body (6) is fixedly connected with the rear end cover (15) through a screw, and the right end of the rear end cover (15) is fixedly connected with the fan blade protective cover (2) through a screw;

a heat dissipation fan blade (3) is arranged in the fan blade protective cover (2);

a stator (7) is fixedly connected in the machine body (6), and a wire frame (8) is arranged on two sides of the stator (7);

two ends of the rotating shaft (22) are movably connected in the machine body (6) through a first bearing (16) and a second bearing (25);

a rotor iron core (21) is fixedly connected to the middle end position of the rotating shaft (22);

the right end of the rotating shaft (22) is connected with the radiating fan blade (3), and the left end of the rotating shaft (22) is connected with the fan blade (12) through the threaded ring front end cover (26) and the nut (13);

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

2. The direct current brushless swirl fan for a large fuel cell according to claim 1, wherein: the spring (17) is a wave spring.

3. The direct current brushless swirl fan for a large fuel cell according to claim 1, wherein: the O-shaped ring (11) is a rubber O-shaped ring.

4. The direct current brushless swirl fan for a large fuel cell according to claim 1, wherein: and a radiating fin is arranged on the outer surface of the machine body (6).

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