CN215186113U

CN215186113U - Alternating current fan

Info

Publication number: CN215186113U
Application number: CN202121332695.5U
Authority: CN
Inventors: 杨成玉; 杨德才; 陈倩; 于收海
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-14
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses an alternating current fan, which comprises a shell, a rotor assembly and a stator assembly, wherein the stator assembly comprises a stator core, the stator core comprises an outer yoke core and an inner yoke core, a wire groove is arranged between the outer yoke core and the inner yoke core, 2 notches are arranged on the inner yoke core, the notches are communicated with the wire groove and are arranged on the same diameter and correspond to each other, and a magnetic conductive sheet is connected on the notches in an interference manner; the stator core is provided with a shaded pole ring, the shaded pole ring is formed by bending a copper wire, is wound on the stator core after being formed, and is welded into a closed loop through argon arc welding; the rotor assembly comprises a rotor core, fan blades, a squirrel cage rotor and a shaft, the fan blades are molded on the outer side of the squirrel cage rotor, and a plurality of reinforcing ribs are uniformly arranged in the fan blades in the circumferential direction, so that the strength of the fan blades is improved; the rotor core is assembled in a skewed slot overlapping mode and used for reducing cogging torque and further reducing mechanical noise of the fan.

Description

Alternating current fan

Technical Field

The utility model relates to a fan technical field, concretely relates to alternating current fan.

Background

Influenced by international trade battle situation in recent years, foreign excellent performance fan purchasing channels are narrower and narrower, purchasing difficulty is larger and larger, and at present, domestic shaded pole type fans are less developed, more fans need to be imported according to foreign countries, especially in the aspect of national defense, the fans are mostly used for heat dissipation and ventilation inside important equipment, the noise requirement is higher, the use requirement cannot be met by the prior art, and the prior art of China is urgently needed to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an effective noise reduction, cover utmost point formula alternating current fan of reinforcing steadiness.

In order to achieve the above object, the utility model adopts the following technical scheme: it comprises a shell, a rotor component and a stator component,

stator module includes stator core, and stator core includes outer yoke iron core and inner yoke iron core, is equipped with the wire casing between outer yoke iron core and the inner yoke iron core, and it has 2 notches to open on the inner yoke iron core, this notch and wire casing intercommunication to establish and correspond each other on same diameter, the interference is connected with the magnetic conduction piece on the notch: the inner yoke iron core is provided with a shaded pole ring, the shaded pole ring is formed by bending a copper wire, is wound on the inner yoke iron core after being formed, and is welded into a closed loop through argon arc welding;

the rotor assembly comprises a rotor core, fan blades, a squirrel cage rotor and a shaft, the fan blades are molded on the outer side of the squirrel cage rotor, and a plurality of reinforcing ribs are uniformly arranged in the fan blades in the circumferential direction, so that the strength of the fan blades is improved; the rotor core is assembled in a skewed slot overlapping mode and used for reducing cogging torque and further reducing mechanical noise of the fan.

Stator core is last to be equipped with the notch of 2 symmetries, all is equipped with the magnetic conduction piece on the notch. The stator core is provided with 2 arc-shaped grooves close to the notch, the upper end and the lower end of each arc-shaped groove are open, and a shaded pole ring is arranged in each arc-shaped groove.

The magnetic conductive sheet is made of carbon steel.

The die-casting end of axle is equipped with the annular, and axle head portion is boss structure, and the boss side has two relative planes, plays the countershaft and prevents changeing and prevent deviating from the effect.

The lower part of the shell is provided with a sealing plate, and the sealing plate can reduce dust entering the bearing.

Use the utility model discloses a beneficial effect is: the carbon steel with excellent magnetic property of the stator assembly magnetic conductive sheet improves the magnetic conductivity of the notch, can reduce the self-vibration of the fan, and further reduces the mechanical noise of the fan;

drawings

Fig. 1 is a schematic structural view of a fan.

Fig. 2 is a schematic structural view of the rotor assembly.

Fig. 3 is a schematic view of a stator assembly structure.

Fig. 4 is a schematic view of a rotor core structure.

Fig. 5 is a schematic view of the shaft structure.

Fig. 6 is a schematic view of a stator core structure.

The reference numerals include:

1-shell, 2-rotor component, 2-1-fan blade, 2-1-1-reinforcing rib, 2-2-squirrel cage rotor, 2-3-shaft, 2-3-1-ring groove, 2-3-2-biplane, 2-4-rotor iron core, 2-4-1-positioning groove, 3-stator component, 3-1-stator iron core, 3-2-stator winding, 3-3-upper end plate, 3-4-lower end plate, 3-5-magnetic conductive plate, 3-6-shaded pole ring, 3-7 inner yoke iron core, 3-8 outer yoke iron core, 3-9 arc groove, 4-snap spring, 5-spring, 6-spring spacer, 7-bearing, 8-screw and 9-sealing plate.

Detailed Description

In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.

The utility model discloses an alternating current fan, which comprises a shell 1, a rotor component 2 and a stator component 3, wherein the stator component 3 comprises a stator iron core 3-1 and a stator winding 3-2, the stator winding 3-2 is wound on the stator iron core 3-1, the stator iron core 3-1 is formed by laminating stator punching sheets, the upper end of the stator iron core 3-1 is fixed with an upper end sheet 3-3, and the lower end is fixed with a lower end sheet 3-4; the stator core 3-1 comprises an outer yoke core 3-8 and an inner yoke core 3-7, a wire slot is arranged between the outer yoke core 3-8 and the inner yoke core 3-7, 2 notches are formed in the inner yoke core 3-7, the notches are communicated with the wire slot, are arranged in the middle of the wire slot and correspond to each other on the same diameter, and magnetic conductive sheets 3-5 are connected to the notches in an interference mode; the inner yoke iron core 3-7 is provided with a shaded pole ring 3-6, the shaded pole ring 3-6 is formed by bending a copper wire, is wound on the inner yoke iron core 3-7 after being formed and is welded into a closed loop through argon arc welding, and the corresponding inner yoke iron core 3-7 is provided with an arc-shaped groove 3-9 for fixing the shaded pole ring 3-6.

The rotor assembly 2 comprises a rotor core 2-4, fan blades 2-1, a squirrel cage rotor 2-2 and a shaft 2-3, the rotor assembly 2 is connected with the shell 1 through a bearing 7, a spring 5 and a spring gasket 6 are arranged between the bearing 7 and the rotor assembly 2, a snap spring 4 is arranged between the rotor assembly 2 and the shell 1 to ensure that the rotor assembly 2 does not fall off the shell 1, and an adjusting gasket is arranged between the bearing 7 and the snap spring 4 to adjust the axial clearance and the compression amount of the spring; the fan blade 2-1 is molded on the outer side of the squirrel cage rotor 2-2, and a plurality of reinforcing ribs 2-2-1 are uniformly arranged in the fan blade 2-1 in the circumferential direction, so that the strength of the fan blade 2-1 is improved; the rotor iron cores 2-4 are assembled in a skewed slot stacking mode and used for reducing cogging torque and further reducing mechanical noise of the fan.

The stator core 2-4 is provided with 2 symmetrical notches, and the notches are provided with magnetic conductive sheets 3-5. The stator core 2-4 is provided with 2 arc grooves 3-9 near the notch, the upper and lower ends of the arc grooves 3-9 are open, and the arc grooves 3-9 are provided with shaded pole rings 3-6.

The cross section of the magnetic conducting sheet 3-5 is arched, and when the magnetic conducting sheet is installed at the notch of the inner yoke iron core, the arched convex surface of the magnetic conducting sheet 3-5 faces the direction of the circle center of the inner yoke iron core 3-7.

The magnetic conductive sheets 3-5 are made of carbon steel.

The die-casting end of the shaft 2-3 is provided with an annular groove 2-3-1, the end part of the shaft is of a boss structure, the side surface of the boss is provided with two opposite planes 2-3-2, and the shaft 2-3 is prevented from rotating and separating.

The lower part of the shell 1 is provided with a sealing plate 9, and the sealing plate 9 can reduce dust entering the bearing 7.

This product is when the in-service use, stator module interference is installed in the casing annular, be equipped with the axle sleeve structure in the casing, be equipped with two bearing rooms in the axle sleeve, two bearings support and provide the support to the rotor subassembly in the bearing room, and it is spacing with the rotor subassembly axial to rely on the jump ring, spring mounting is between bearing and spring shim, for the rotor subassembly provides the compression allowance, play the cushioning effect, the closing plate passes through screw 8 to be fixed on the casing, play the sealed bearing room, reduce the inside effect of entering debris of fan. Through the strict control rotor subassembly dynamic balance precision and dynamic balance volume, all adopt the weight removal mode to carry out dynamic balance operation around moulding the pressure flabellum, the dynamic balance precision selects G1.0 level, and the dynamic balance volume is all controlled within 6mg, and then improves the dynamic eccentricity of fan rotor subassembly, makes the fan operate steadily, reduces mechanical noise.

The stator assembly consists of a stator core, a winding, an upper end sheet, a lower end sheet, a magnetic conductive sheet and a shaded pole ring. The stator core is formed by laminating stator punching sheets; the magnetic conductive sheet is made of No. 10 carbon steel with excellent magnetic conductive property, the integral magnetic conductive property is improved, the cogging torque is avoided, the fan is more stable to rotate, and the magnetic conductive sheet is arranged at the notch of the stator core in an interference manner; the shaded pole ring is formed by bending a copper wire, is inserted into the corresponding arc groove of the stator iron core after being formed, and is welded into a closed loop through argon arc welding; the upper end sheet and the lower end sheet play an insulating role, are fixed at the upper end and the lower end of the stator core in a bonding mode, and the winding is wound in the stator core.

The rotor assembly consists of fan blades, squirrel cage rotor, shaft and rotor core. The squirrel-cage rotor is made in a die-casting mode, the squirrel-cage rotor is coaxial and is integrally die-cast with the rotor core, the die-casting end of the shaft is provided with a groove and two plane structures, the structure plays a role in preventing rotation and separation of the shaft, and the assembly reliability of the shaft is guaranteed. The rotor core is formed by stacking rotor punching sheets, a chute stacking mode is adopted, a mode of increasing positioning grooves can be adopted when stacking positioning is difficult due to the fact that the inclination angle is large and the notch is small, and after stacking is completed, allowance such as the positioning grooves 2-4-1 is removed through a machining mode. The fan blades are molded on the outer side of the squirrel cage rotor, and reinforcing ribs are uniformly arranged in the fan blades, so that the strength of the fan blades is improved.

The foregoing is only a preferred embodiment of the present invention, and many variations can be made in the specific embodiments and applications of the present invention by those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides an alternating current fan, it includes casing, rotor subassembly, stator module, its characterized in that:

the stator assembly comprises a stator core, the stator core comprises an outer yoke core and an inner yoke core, a wire slot is arranged between the outer yoke core and the inner yoke core, 2 notches are formed in the inner yoke core, the notches are communicated with the wire slot and are arranged on the same diameter and correspond to each other, and magnetic conductive sheets are connected to the notches in an interference mode; the inner yoke iron core is provided with a shaded pole ring, the shaded pole ring is formed by bending a copper wire, is wound on the inner yoke iron core after being formed, and is welded into a closed loop through argon arc welding;

2. The ac fan according to claim 1, wherein: be equipped with the notch of 2 symmetries on the stator core, all be equipped with the magnetic conduction piece on the notch, be close to the notch position on the stator core and be equipped with 2 arc walls, both ends opening about the arc wall is equipped with the cover polar ring in the arc wall.

3. An alternating current fan according to claim 2, wherein: the magnetic conductive sheet is made of carbon steel.

4. An AC fan as claimed in claim 2 or 3, wherein: the die-casting end of axle is equipped with the annular, and axle head portion is boss structure, and the boss side has two relative planes, plays the countershaft and prevents changeing and prevent deviating from the effect.

5. The AC fan of claim 4, wherein: the lower part of the shell is provided with a sealing plate, and the sealing plate can reduce dust entering the bearing.