CN215109573U

CN215109573U - Low-noise large-air-volume axial flow fan

Info

Publication number: CN215109573U
Application number: CN202120285245.9U
Authority: CN
Inventors: 娄建柱
Original assignee: Zhejiang Jingang Blower Fan Co ltd
Current assignee: Zhejiang Jingang Blower Fan Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-12-10
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses an axial fan of big amount of wind of low noise, including fan section of thick bamboo and impeller, be equipped with strutting arrangement in the fan section of thick bamboo, be equipped with the motor in the strutting arrangement, the output shaft of impeller and motor, the impeller includes wheel hub and flabellum, the flabellum circumference sets up on wheel hub's lateral wall, the flabellum includes blade connecting portion, blade body and blade top, the angle of being connected between blade connecting portion and the wheel hub is 26 ~ 35, and the blade body is the distortion form, and the angle between blade top and the wheel hub is 56 ~ 65, the utility model discloses it is rational in infrastructure, through the adjustment to the flabellum angle, has increased the wind-force that the flabellum can form under the same rotational speed.

Description

Low-noise large-air-volume axial flow fan

Technical Field

The utility model relates to a ventilation equipment field, in particular to axial fan of the big amount of wind of low noise.

Background

The axial flow fan has a very wide application, namely, the axial flow fan and the fan blade have the same direction of air flow, such as an electric fan, and an air conditioner outer machine fan is an axial flow type running fan. The "axial flow" is so called because the gas flows parallel to the fan axis. Axial flow fans are typically used in applications where flow requirements are high and pressure requirements are low. The axial fan fixes the position and moves the air. The axial flow fan mainly comprises a fan impeller and a casing, and is simple in structure but high in data requirement.

The existing fan can be accompanied with great noise when in use, and if the noise needs to be weakened, the air output of the fan can be correspondingly reduced. In view of the above problems, a solution is proposed as follows.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an axial fan of the big amount of wind of low noise has and can weaken the noise of fan under the prerequisite of guaranteeing the big amount of wind to make the fan reach the advantage of the big amount of wind of low noise.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an axial fan of big amount of wind of low noise, includes fan barrel and impeller, be equipped with strutting arrangement in the fan barrel, be equipped with the motor in the strutting arrangement, the output shaft of impeller and motor, the impeller includes wheel hub and flabellum, the flabellum circumference sets up on wheel hub's lateral wall, the flabellum includes blade connecting portion, blade body and blade top, the angle of connection between blade connecting portion and the wheel hub is 26 ~ 35, the blade body is the distortion form, the angle between blade top and the wheel hub is 56 ~ 65.

Preferably, one side of the fan blade is provided with a supporting block, one side of the supporting block is fixedly connected with the side wall of the fan blade, the other side wall of the supporting block is fixedly connected with the side wall of the hub, and the supporting block is used for supporting the fan blade.

Preferably, the supporting device comprises a supporting cylinder and a plurality of supporting plates, the two ends of each supporting plate are respectively connected with the outer wall of the supporting cylinder and the inner wall of the air cylinder, a mounting frame is fixedly arranged inside the supporting cylinder, the motor is located on the mounting frame and is fixedly connected with the mounting frame, and a damping device is arranged on the mounting frame.

Preferably, the damping device comprises a damping plate and a damping pad, the damping plate is located above the supporting plate, the damping pad is located between the damping plate and the supporting plate, and the motor is located at the upper end of the damping plate.

Preferably, the upper end of the supporting cylinder is provided with a supporting block, the lower end of the supporting block is attached to the upper end of the motor, and the supporting block is used for tightly supporting the motor so as to reduce the vibration amplitude of the motor.

Preferably, one side of the supporting plate is provided with a wind guide wing, and the wind guide wing is used for guiding wind.

Preferably, a stabilizing cylinder is arranged on the wheel hub, an output shaft of the motor is inserted into the stabilizing cylinder and is fixedly connected with the stabilizing cylinder, and the stabilizing cylinder is used for increasing the stability between the wheel hub and the output shaft of the motor.

Preferably, two connecting frames are symmetrically arranged on the fan barrel, the two connecting frames are distributed at two ends of the fan barrel, and each connecting frame is used for fixing the fan barrel.

Preferably, two ends of the fan barrel are provided with mesh enclosures, and the mesh enclosures are used for protecting equipment inside the fan barrel.

Preferably, a sound insulation layer is arranged in the wall of the fan barrel and used for insulating noise inside the fan barrel.

The utility model has the advantages that: through the angle of adjustment flabellum, make the flabellum can have bigger amount of wind under the same rotational speed, slowed down the vibrations of motor through the shock pad, reduced the noise that the motor sent when the operation, the stability of being connected between motor output shaft and the wheel hub has been consolidated to a practical firm section of thick bamboo, makes the impeller can not rock when high-speed rotation, reduces the noise, blocks the propagation of noise through the puigging at last to reach the effect of low noise.

Drawings

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

fig. 2 is a sectional view of the embodiment.

Reference numerals: 1. a blower barrel; 2. a motor; 3. a hub; 4. a fan blade; 5. a support block; 6. a support cylinder; 7. a support plate; 8. a mounting frame; 9. a damper plate; 10. a shock pad; 11. A resisting block; 12. a wind guide wing; 13. a stabilizing cylinder; 14. a connecting frame; 15. a mesh enclosure; 16. and a sound insulation layer.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 and 2, a low-noise large-air-volume axial flow fan comprises a fan barrel 1 and an impeller. A supporting device is arranged in the fan barrel 1, a motor 2 is arranged in the supporting device, the motor 2 is fixedly connected with the impeller, and the impeller can be driven to rotate after the motor 2 is started, so that wind is formed.

As shown in fig. 1 and 2, the supporting device comprises a supporting cylinder 6 and a plurality of supporting plates 7, and two ends of the plurality of supporting plates 7 are respectively connected with the outer wall of the supporting cylinder 6 and the inner wall of the fan cylinder 1. Supporting cylinder 6 inside sets firmly mounting bracket 8, is equipped with damping device on the mounting bracket 8, and damping device includes shock attenuation board 9 and shock pad 10, and motor 2 is located the upper end of shock attenuation board 9. The shock pad 10 can reduce the shock when the motor 2 is started, thereby reducing the noise caused by the shock of the motor 2.

As shown in fig. 1 and 2, the upper end of the supporting cylinder 6 is provided with a resisting block 11, the lower end of the resisting block 11 is attached to the upper end of the motor 2, the resisting block 11 can tightly resist the upper end of the motor 2, vibration of the motor 2 is further reduced, and accordingly noise of the motor 2 is further reduced.

As shown in fig. 1 and 2, the hub 3 is provided with the stabilizing cylinder 13, the output shaft of the motor 2 is fixedly connected with the stabilizing cylinder 13, and the stabilizing cylinder 13 increases the contact area between the impeller and the output shaft of the motor 2, so that the stability between the impeller and the motor 2 is increased, and when the motor 2 drives the impeller to rotate, the shaking of the impeller caused by centrifugal force is reduced, and the noise generated by the rotation of the impeller is reduced.

As shown in fig. 1 and 2, the impeller includes a hub 3 and blades 4, a support block 5 is disposed on one side of the blades 4, one side of the support block 5 is fixedly connected to a sidewall of the blades 4, and another sidewall of the support block 5 is fixedly connected to a sidewall of the hub 3. The supporting block 5 supports the fan blades 4, so that the fan blades 4 cannot shake when rotating at a high speed, and noise is reduced.

As shown in fig. 1 and 2, the fan blade 4 includes a blade connecting portion, a blade body, and a blade tip portion, a connection angle between the blade connecting portion and the hub 3 is 26 ° to 35 °, the blade body is twisted, and an angle between the blade tip portion and the hub 3 is 56 ° to 65 °. Through adjusting the connection angle between the fan blade 4 and the hub 3, the angle of the fan blade 4 capable of generating the maximum air quantity at the same rotating speed is found, and the integral air quantity of the fan is increased.

As shown in fig. 1 and 2, one side of the support plate 7 is provided with a wind guiding wing 12, and the wind guiding wing 12 can guide the wind in the fan cylinder 1, reduce the obstruction to the wind, and increase the wind volume.

As shown in fig. 1 and 2, a sound insulation layer 16 is provided in the wall of the blower cylinder 1, and the sound insulation layer 16 can insulate the transmission of noise inside the blower cylinder 1, thereby reducing noise that can be heard from the outside.

As shown in fig. 1 and 2, the blower barrel 1 is symmetrically provided with two connecting frames 14, the two connecting frames 14 are distributed at two ends of the blower barrel 1, and the two connecting frames 14 can fix two ends of the blower barrel 1, so that the blower barrel 1 does not shake, and noise generated by the blower barrel 1 is reduced.

As shown in fig. 1 and 2, mesh enclosures 15 are disposed at two ends of the blower barrel 1, and the mesh enclosures 15 can prevent external large impurities from entering the blower barrel 1, so as to protect devices inside the blower barrel 1 from being damaged.

The working principle is as follows: after the motor 2 is started, the motor 2 can drive the impeller to rotate, the fan blades 4 of the impeller are adjusted to the optimal angle, and the maximum wind can be generated under the condition that the rotating speed is not changed. The abutting block 11 and the shock absorption pad 10 can weaken the vibration amplitude of the motor 2, so that the noise generated by the motor 2 is reduced, the stability between the motor 2 and the impeller is enhanced by the stabilizing cylinder 13, the vibration of the impeller is weakened, and the noise generated by the impeller is reduced. The two connecting frames 14 fix the fan barrel 1 more stably, noise generated by vibration of the fan barrel 1 is reduced, and sound insulation materials in the sound insulation layer 16 can reduce sound transmission inside the fan barrel 1, so that the noise generated by the whole fan barrel 1 is reduced.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an axial fan of big amount of wind of low noise, includes fan barrel (1) and impeller, its characterized in that, be equipped with strutting arrangement in fan barrel (1), be equipped with motor (2) in the strutting arrangement, the output shaft of impeller and motor (2), the impeller includes wheel hub (3) and flabellum (4), flabellum (4) circumference sets up on the lateral wall of wheel hub (3), flabellum (4) include blade connecting portion, blade body and blade top, the angle of connection between blade connecting portion and wheel hub (3) is 26 ~ 35, the blade body is the distortion form, the angle between blade top and wheel hub (3) is 56 ~ 65.

2. The axial flow fan with low noise and large air volume according to claim 1, wherein a supporting block (5) is arranged on one side of the fan blade (4), one side of the supporting block (5) is fixedly connected with the side wall of the fan blade (4), the other side wall of the supporting block (5) is fixedly connected with the side wall of the hub (3), and the supporting block (5) is used for supporting the fan blade (4).

3. The axial flow fan with low noise and large air volume according to claim 1, wherein the supporting device comprises a supporting cylinder (6) and a plurality of supporting plates (7), two ends of the plurality of supporting plates (7) are respectively connected with the outer wall of the supporting cylinder (6) and the inner wall of the fan cylinder (1), a mounting frame (8) is fixedly arranged inside the supporting cylinder (6), the motor (2) is positioned on the mounting frame (8) and is fixedly connected with the mounting frame (8), and a damping device is arranged on the mounting frame (8).

4. A low noise large air volume axial flow fan according to claim 3, wherein said shock absorbing device comprises a shock absorbing plate (9) and a shock absorbing pad (10), said shock absorbing plate (9) is located above the support plate (7), said shock absorbing pad (10) is located between the shock absorbing plate (9) and the support plate (7), and said motor (2) is located at the upper end of the shock absorbing plate (9).

5. The axial flow fan with low noise and large air volume according to claim 3 is characterized in that a resisting block (11) is arranged at the upper end of the supporting cylinder (6), the lower end of the resisting block (11) is attached to the upper end of the motor (2), and the resisting block (11) is used for resisting the motor (2) tightly so as to reduce the vibration amplitude of the motor (2).

6. A low noise and large air volume axial flow fan according to claim 3, wherein one side of said support plate (7) is provided with a wind guiding wing (12), and said wind guiding wing (12) is used for guiding wind.

7. The axial flow fan with low noise and large air volume according to claim 6, wherein a stabilizing cylinder (13) is arranged on the hub (3), the output shaft of the motor (2) is inserted into the stabilizing cylinder (13) and is fixedly connected with the stabilizing cylinder (13), and the stabilizing cylinder (13) is used for increasing the stability between the hub (3) and the output shaft of the motor (2).

8. A low noise and large air volume axial flow fan according to claim 1, wherein two connecting frames (14) are symmetrically arranged on the fan cylinder (1), the two connecting frames (14) are distributed at two ends of the fan cylinder (1), and each connecting frame (14) is used for fixing the fan cylinder (1).

9. The axial flow fan with low noise and large air volume according to claim 8 is characterized in that the two ends of the fan cylinder (1) are provided with the mesh enclosures (15), and the mesh enclosures (15) are used for protecting equipment inside the fan cylinder (1).

10. A low noise and large air volume axial flow fan according to claim 1, wherein a sound insulation layer (16) is provided in the wall of the fan cylinder (1), and the sound insulation layer (16) is used for insulating the noise inside the fan cylinder (1).