CN111207096A

CN111207096A - Direct-current brushless damping and noise-reducing fan

Info

Publication number: CN111207096A
Application number: CN202010067708.4A
Authority: CN
Inventors: 过学良
Original assignee: Shengzhou Huahao Motor Manufacturing Co ltd
Current assignee: Shengzhou Huahao Motor Manufacturing Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-05-29

Abstract

The invention discloses a direct-current brushless damping and noise-reducing fan which comprises a fan shell, wherein a wind wheel is arranged in the fan shell, a damping mechanism I is arranged at the upper end of the wind wheel, a damping mechanism II is arranged at the lower end of the wind wheel, an air inlet is formed in one side of the fan shell, a fixing plate is fixedly arranged in the wind wheel, a sound-absorbing shell is welded on one side of the fixing plate, sound-absorbing cotton is fixedly arranged on the inner wall of the sound-absorbing shell, a plurality of heat dissipation holes I are formed in the sound-absorbing shell, a motor is arranged in the sound-absorbing cotton, a rotating shaft is welded on an output shaft of the motor. According to the invention, the noise generated by the motor is reduced through the sound-absorbing cotton and the sound-insulating shell, and when the wind wheel is driven to vibrate by the vibration of the motor, the damping mechanism I and the damping mechanism II play a role in damping, so that the service life of the fan is finally prolonged.

Description

Direct-current brushless damping and noise-reducing fan

Technical Field

The invention relates to a fan, in particular to a direct-current brushless damping and noise-reducing fan.

Background

The fan is a power component and is used in household appliances or ventilation equipment such as a range hood, an integrated stove and the like. The fan comprises a motor, a wind wheel and a volute, the wind wheel can be driven by the motor during working, and air is discharged through the volute under the action of the wind wheel. But the existing fan can send violent vibrations during operation to because the relation of vibrations can lead to the fan to produce huge noise when working again, finally influence the life of fan.

Disclosure of Invention

The invention aims to provide a direct-current brushless damping and noise-reducing fan which has the advantages of damping and noise reduction.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a brushless shock attenuation of direct current fan of making an uproar, includes the fan shell, fan shell upper end is equipped with the air outlet, the inside wind wheel that is provided with of fan shell, the wind wheel upper end is provided with damper one, the wind wheel lower extreme is provided with damper two, damper one with damper two is the symmetry setting, fan shell one side is equipped with the air intake, the fixed plate has set firmly in the wind wheel, the welding of fixed plate one side has sound insulation shell, sound insulation shell inner wall has set firmly inhales the sound cotton, all seted up a plurality of louvre one on the sound insulation shell, inhale the cotton inside motor that is provided with of sound, the motor with the fixed plate is fixed connection, the welding has the pivot on the output shaft of motor, the pivot is kept away from the one.

Adopt above-mentioned technical scheme, when the motor starts to send the noise, through inhaling the sound cotton and the shell that gives sound insulation reduced the noise that the motor sent to a plurality of louvre on the shell that gives sound insulation has played the radiating effect of motor, and when the vibrations of motor drove the wind wheel vibrations, damper one and damper two had all played the absorbing effect, thereby reduced the noise once more, finally prolonged the life of fan.

Preferably, the sound-absorbing cotton is polyester sound-absorbing cotton, and the sound-absorbing cotton is provided with a plurality of second heat dissipation holes.

By adopting the technical scheme, the polyester sound-absorbing cotton has the advantages of firmness, tastelessness, water resistance, moisture resistance, good air permeability, long service life and the like, and the plurality of heat dissipation holes II play a role in heat dissipation, thereby avoiding the failure of the motor due to no heat dissipation.

Preferably, the impeller is composed of a PVC material.

By adopting the technical scheme, the impeller is made of PVC, so that the noise generated by collision between the impeller which runs at a high speed and air flow is reduced, and the weight of the fan is reduced.

Preferably, the fan shell is coated with an anti-rust layer, and the anti-rust layer is a zinc coating.

By adopting the technical scheme, the antirust layer plays a role in rust prevention, the fan shell is prevented from rusting, the galvanized layer prevents the fan shell from being corroded by the outside atmosphere, and the fan shell is more attractive.

Preferably, damper one includes two fixed blocks, two the fixed block all is located the wind wheel upper end, and is fixed connection with the wind wheel upper end, all articulates on two fixed blocks has the connecting rod, and two connecting rods keep away from that fixed block one side all articulates there is the slider, are provided with the slide bar on two sliders, the slide bar both ends all have set firmly the rubber pad, two the rubber pad all with fan shell inner wall is fixed connection, the slide bar respectively with two the slider is sliding connection, two slider one side all welds there are two springs.

Adopt above-mentioned technical scheme, drive two fixed blocks vibrations when the wind wheel shakes, the power of two fixed block vibrations drives two connecting rods respectively and moves to the outside, and two connecting rods move to the outside and drive two sliders and slide on the slide bar respectively, and when the spring of two sliders touchd the rubber pad at both ends, the extrusion through the spring has alleviateed the power of vibrations.

Preferably, a bearing is embedded in the fixing plate, and the rotating shaft is located inside the bearing.

By adopting the technical scheme, when the motor is started, the output shaft of the motor rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to drive the impeller to rotate. The bearing reduces the friction coefficient in the moving process of the rotating shaft.

Preferably, a filter screen is arranged at the air inlet and fixedly connected with the fan shell.

By adopting the technical scheme, the filter screen at the air inlet plays a role in filtering dirt, and the dirt is prevented from being discharged by the air outlet of the fan.

Preferably, the lower end of the fan shell is provided with a shock absorption sound insulation plate, and the upper end of the shock absorption sound insulation plate is arc-shaped and matched with the lower end of the fan shell.

By adopting the technical scheme, the damping sound-insulating plate is in the prior art, plays the roles of damping and sound insulation, and reduces the vibration and noise of the fan.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the embodiment;

fig. 3 is an enlarged view of a portion a of fig. 2.

Reference numerals: 1. a fan housing; 2. an air inlet; 3. an air outlet; 4. a filter screen; 5. a shock absorbing and sound insulating plate; 6. a fixing plate; 7. a bearing; 8. a rotating shaft; 9. an impeller; 10. a sound-insulating shell; 11. sound-absorbing cotton; 12. a motor; 13. a first damping mechanism; 131. a fixed block; 132. a connecting rod; 133. a slider; 134. a slide bar; 135. a spring; 136. a rubber pad; 14. a second damping mechanism; 15. and a wind wheel.

Detailed Description

The following description is only a preferred embodiment of the present invention, and the protection scope is not limited to the embodiment, and any technical solution that falls under the idea of the present invention should fall within the protection scope of the present invention. It should also be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention.

The utility model provides a brushless damping and noise reduction fan of direct current, sees figure 1 to figure 3, including fan shell 1, fan shell 1 scribbles the antirust coat, and the antirust coat is the galvanizing coat, and the antirust coat has played rust-resistant effect, avoids fan shell 1 to rust, and the galvanizing coat has both prevented that fan shell 1 from being corroded by outside atmosphere, still makes fan shell 1 more pleasing to the eye.

The lower end of the fan shell 1 is provided with a damping sound-insulating plate 5, and the upper end of the damping sound-insulating plate 5 is arc-shaped and matched with the lower end of the fan shell 1. The shock absorption sound insulation plate 5 plays a role in shock absorption and sound insulation for the prior art, so that the shock and noise of the fan are reduced.

The upper end of the fan shell 1 is provided with an air outlet 3, one side of the fan shell 1 is provided with an air inlet 2, the air inlet 2 is provided with a filter screen 4, and the filter screen 4 is fixedly connected with the fan shell 1. The filter screen 4 at the air inlet 2 plays a role of filtering dirt, and the dirt is prevented from being discharged by the air outlet 3 of the fan. Fan housing 1 is inside to be provided with wind wheel 15, and fixed plate 6 has set firmly in wind wheel 15, and the welding of 6 one sides of fixed plate has soundproof shell 10, has all seted up a plurality of louvre one on the soundproof shell 10, and soundproof shell 10 inner wall has set firmly inhales sound cotton 11, inhales sound cotton 11 and inhales sound cotton 11 for polyester, inhales and has seted up a plurality of louvre two on the sound cotton 11. The polyester sound absorption cotton 11 has the advantages of firmness, tastelessness, water resistance, moisture resistance, good air permeability, long service life and the like, the first heat dissipation holes and the second heat dissipation holes play a role in heat dissipation, and the problem that the motor 12 fails due to the fact that heat is not dissipated is avoided.

Inhale the cotton 11 inside motor 12 that is provided with of sound, motor 12 is fixed connection with fixed plate 6, when motor 12 emitted the noise, has reduced the noise that motor 12 sent through inhaling cotton 11 and sound-proof shell 10, and the welding has pivot 8 on the output shaft of motor 12, and it has bearing 7 to inlay in the fixed plate 6, and pivot 8 is located inside bearing 7. When the motor 12 is started, the output shaft of the motor 12 rotates to drive the rotating shaft 8 to rotate, and the rotating shaft 8 rotates to drive the impeller 9 to rotate. The bearing 7 reduces the friction coefficient during the movement of the rotating shaft 8. An impeller 9 is fixedly arranged at one end of the rotating shaft 8 far away from the motor 12, and the impeller 9 is made of PVC materials. The impeller 9 is made of PVC, so that the noise generated by the collision of the impeller 9 running at high speed with air flow is reduced, and the weight of the fan is reduced.

The upper end of the wind wheel 15 is provided with a first damping mechanism 13, the lower end of the wind wheel 15 is provided with a second damping mechanism 14, the first damping mechanism 13 and the second damping mechanism 14 are symmetrically arranged, the first damping mechanism 13 comprises two fixed blocks 131, the two fixed blocks 131 are both positioned at the upper end of the wind wheel 15 and are fixedly connected with the upper end of the wind wheel 15, when the wind wheel 15 vibrates, the two fixed blocks 131 are driven to vibrate, connecting rods 132 are hinged on the two fixed blocks 131, the force generated by the vibration of the two fixed blocks 131 respectively drives the two connecting rods 132 to move outwards, one sides of the two connecting rods 132, far away from the fixed blocks 131, are both hinged with sliding blocks 133, sliding rods 134 are arranged on the two sliding blocks 133, rubber pads 136 are fixedly connected at both ends of the sliding rods 134, the two rubber pads 136 are both fixedly connected with the inner wall of the fan shell 1, the sliding, two springs 135 are welded on one side of each of the two sliding blocks 133, and when the springs 135 of the two sliding blocks 133 touch the rubber pads 136 at the two ends, the force of vibration is relieved through the extrusion of the springs 135, and the service life of the fan is finally prolonged.

Claims

1. The direct-current brushless damping and noise-reducing fan comprises a fan shell (1) and is characterized in that an air outlet (3) is formed in the upper end of the fan shell (1), a wind wheel (15) is arranged inside the fan shell (1), a damping mechanism I (13) is arranged at the upper end of the wind wheel (15), a damping mechanism II (14) is arranged at the lower end of the wind wheel (15), the damping mechanism I (13) and the damping mechanism II (14) are symmetrically arranged, an air inlet (2) is formed in one side of the fan shell (1), a fixing plate (6) is fixedly arranged in the wind wheel (15), a sound insulation shell (10) is welded on one side of the fixing plate (6), sound-absorbing cotton (11) is fixedly arranged on the inner wall of the sound insulation shell (10), a plurality of heat dissipation holes I are formed in the sound insulation shell (10), and a motor (12) is, the motor (12) with the fixed plate (6) is fixed connection, the welding has pivot (8) on the output shaft of motor (12), pivot (8) are kept away from the one end of motor (12) has set firmly impeller (9).

2. The direct-current brushless damping and noise reducing fan according to claim 1, wherein the sound-absorbing cotton (11) is polyester sound-absorbing cotton (11), and the sound-absorbing cotton (11) is provided with a plurality of second heat dissipation holes.

3. A direct current brushless damping and noise reducing fan according to claim 2, characterized in that the impeller (9) is made of PVC material.

4. The direct-current brushless damping and noise reducing fan according to claim 3, wherein the fan housing (1) is coated with a rust-proof layer, and the rust-proof layer is a galvanized layer.

5. The direct-current brushless damping and noise reducing fan according to claim 4, wherein the first damping mechanism (13) comprises two fixed blocks (131), the two fixed blocks (131) are both located at the upper end of the wind wheel (15) and fixedly connected with the upper end of the wind wheel (15), connecting rods (132) are hinged to the two fixed blocks (131), sliding blocks (133) are hinged to one sides, away from the fixed blocks (131), of the two connecting rods (132), sliding rods (134) are arranged on the two sliding blocks (133), rubber pads (136) are fixedly arranged at two ends of each sliding rod (134), the two rubber pads (136) are fixedly connected with the inner wall of the fan housing (1), the sliding rods (134) are slidably connected with the two sliding blocks (133) respectively, and two springs (135) are welded to one side of the two sliding blocks (133).

6. The direct-current brushless damping and noise reducing fan according to claim 5, wherein a bearing (7) is embedded in the fixing plate (6), and the rotating shaft (8) is located inside the bearing (7).

7. The direct-current brushless damping and noise reducing fan according to claim 6, wherein a filter screen (4) is disposed at the air inlet (2), and the filter screen (4) is fixedly connected with the fan housing (1).

8. The direct-current brushless damping and noise reducing fan according to claim 7, wherein the lower end of the fan housing (1) is provided with a damping and sound insulating plate (5), and the upper end of the damping and sound insulating plate (5) is arc-shaped and is matched with the lower end of the fan housing (1).