CN219840855U

CN219840855U - Noise reduction structure of high-speed fan

Info

Publication number: CN219840855U
Application number: CN202321351305.8U
Authority: CN
Inventors: 彭进; 廖聪聪
Original assignee: Jiangsu Tonggu Technology Co ltd
Current assignee: Jiangsu Tonggu Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-17
Anticipated expiration: 2033-05-31

Abstract

The utility model discloses a high-speed fan noise reduction structure, which relates to the technical field of fan noise reduction and comprises a high-speed fan base, wherein a motor is arranged on the top surface of the high-speed fan base, a transmission assembly is arranged on the outer side surface of an output end of the motor, a ventilation pipeline is arranged on the top surface of the high-speed fan base, a rotating assembly is movably arranged in the ventilation pipeline, and an arc fan sheet is arranged on the outer side surface of the rotating assembly. According to the utility model, the first bevel gear and the second bevel gear are matched with each other, so that the air inlet and the air outlet are positioned on the same axis, and the rotary shaft and the circular arc fan blade are stably operated through the mutual matching of the circular disc and the circular arc fan blade, so that the high-speed fan has a good noise reduction function, the noise is reduced, the interference to a human body can be reduced, a more pleasant environment is provided, the relaxation and concentration of people are promoted, the risk of hearing damage can be reduced, and the hearing health of people is protected.

Description

Noise reduction structure of high-speed fan

Technical Field

The utility model relates to the technical field of fan noise reduction, in particular to a high-speed fan noise reduction structure.

Background

The high-speed fan is a fan with higher rotating speed, is usually used in applications requiring larger air quantity and pressure, and with the continuous progress of technology, the requirements of people on equipment operation are higher and higher, and the fan is a driven fluid machine which relies on input mechanical energy to improve the air pressure and discharge air. The fan generally includes a ventilator, a blower, and a wind power generator. The main structural components of the fan are an impeller, a shell, an air inlet, a bracket, a motor, a belt pulley, a coupler, a muffler, a transmission piece (bearing) and the like.

According to the published patent number CN 216278686U: the utility model provides a device of making an uproar falls in high-speed fan, including the end plate, one side of end plate is equipped with the fan shell, through setting up fan shell and the sound-proof housing that falls bilayer structure for improve the holistic sound insulation of fan outside casing, inhale the sound performance, realize the design of making an uproar from fan body structure, simple structure, rationally, support stably, the loss is low, long service life, very big reduction high-speed fan operation's noise, high-speed fan can satisfy the use in low noise requirement place, application scope is wider, however, still has following shortcoming to a certain extent.

The air inlet and the air outlet of the utility model are positioned on different end surfaces, thereby increasing the transmission and diffusion of noise, increasing the probability of noise generation due to the complexity of an air flow path, and simultaneously, the noise is transmitted in the pipeline and the connecting piece, so that the noise reduction effect of the utility model is poor.

Disclosure of Invention

The utility model provides a high-speed fan noise reduction structure, which has the advantage of good noise reduction performance of a high-speed fan so as to solve the problem of high noise of the high-speed fan.

In order to achieve the purpose that the high-speed fan has good noise reduction performance, the utility model provides the following technical scheme: the utility model provides a high-speed fan structure of making an uproar falls, includes the high-speed fan base and installs the acoustic celotex board at high-speed fan base top surface, the top surface mounting of high-speed fan base has the motor, the outside surface mounting of motor output has drive assembly, the top surface mounting of high-speed fan base has the air pipe, the inside movable mounting of air pipe has rotating assembly, rotating assembly's outside surface mounting has circular arc fan piece, air pipe's outside surface and acoustic celotex board's outside surface movable contact.

As a preferable technical scheme of the utility model, the ventilating duct is provided with the air inlet and the air outlet, the air inlet and the air outlet are positioned on the same axis, and the pipe diameter of the air inlet is smaller than that of the air outlet.

As a preferable technical scheme of the utility model, the transmission assembly comprises a rotating shaft and a circular disc, wherein the rotating shaft is movably arranged on the outer side surface of the output end of the motor, the circular disc is arranged on one end surface of the rotating shaft, and the outer side surface of the circular disc is in movable contact with the inside of the ventilation pipeline.

As a preferable technical scheme of the utility model, the outer side surface of the rotating shaft is provided with a first bevel gear, and the inner wall of the ventilation pipeline is provided with a sound absorbing plate.

As a preferable technical scheme of the utility model, the rotating assembly comprises a circular ring and four connecting columns, wherein the circular ring is movably arranged at the inner wall of the ventilating duct, and the four connecting columns are arranged on the inner side surface of the circular ring.

As a preferable technical scheme of the utility model, one end surfaces of the four connecting columns are jointly provided with a transmission shaft, and the outer side surfaces of the transmission shafts are fixedly connected with the inner parts of the circular arc fan blades.

As a preferable technical scheme of the utility model, the outer side surface of the transmission shaft is provided with a second bevel gear, and the outer side surface of the second bevel gear is meshed with the outer side surface of the first bevel gear.

Compared with the prior art, the utility model provides a high-speed fan noise reduction structure, which comprises the following components

The beneficial effects are that:

1. this high-speed fan structure of making an uproar falls, through first helical gear and second helical gear mutually supporting, mutually supporting through disk and ring makes rotation axis and circular arc fan piece carry out steady operation, makes high-speed fan have good function of making an uproar, and noise reduction can reduce the interference to the human body, provides more pleasant environment, promotes people's relaxation and focus attention, can also reduce the impaired risk of hearing, and protection people's hearing is healthy.

2. This high-speed fan structure of making an uproar falls, through air intake and air outlet mutually supporting, air intake and air outlet are in the resistance that can reduce the air flow on same axis, through reducing the quantity of pipeline and connecting piece, reduced the resistance loss in the fluid flow process, improved the efficiency of system, be in the propagation and the diffusion that can the noise of same axis with air intake and air outlet, because the simplification of air flow path, the chance that the noise produced reduces to the whole noise level of system has been reduced.

3. This high-speed fan structure of making an uproar falls, acoustic celotex board can keep apart the noise effectively, carries out the sound insulation with the noise that the motor produced and handles, and the sound absorbing plate adopts sound absorbing material to make, can turn into heat energy or other forms' energy with sound energy to reduce the reflection and the propagation of sound.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the present utility model;

fig. 3 is a schematic view of an internal structure according to another view of the present utility model.

In the figure: 1. a sound insulation board; 2. a motor; 3. a rotation shaft; 4. a high-speed fan base; 5. a first helical gear; 6. a second helical gear; 7. a wafer; 8. arc fan blades; 9. a transmission shaft; 10. a connecting column; 11. a circular ring; 12. an air inlet; 13. an air outlet; 14. a ventilation duct; 15. a sound absorbing plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model discloses a noise reduction structure of a high-speed fan, which comprises a high-speed fan base 4 and a sound insulation board 1 fixed on the top end surface of the high-speed fan base 4 by bolts, wherein the outer side surface of the ventilation pipe 14 is movably contacted with the outer side surface of the sound insulation board 1, the sound insulation board 1 is usually made of a high-density fiber board or a metal plate, the surface of the sound insulation board is possibly covered with a sound absorbing material, the sound absorbing material has higher density and quality and can effectively isolate noise, the noise generated by a motor 2 is subjected to sound insulation treatment, the top end surface of the high-speed fan base 4 is fixedly provided with the motor 2 by bolts, the outer side surface of the output end of the motor 2 is provided with a transmission component, the top end surface of the high-speed fan base 4 is provided with the ventilation pipe 14, the inside of the ventilation pipe 14 is movably provided with a rotating component, the outer side surface of the rotating component is provided with an arc fan sheet 8, and the arc fan sheet 8 is opposite to a traditional straight blade, the air turbulence and resistance can be reduced when the fan rotates, thereby reducing the generation of noise, the design of the arc fan blade 8 can better optimize the air flow, reduce the pressure change and vibration when the fan rotates, reduce the noise propagation, the air inlet 12 and the air outlet 13 are arranged on the ventilating duct 14, the air inlet 12 and the air outlet 13 are positioned on the same axis, the resistance of the air flow can be reduced when the air inlet 12 and the air outlet 13 are positioned on the same axis, the resistance loss in the fluid flow process is reduced by reducing the number of the pipelines and the connecting pieces, the efficiency of the system is improved, the air inlet 12 and the air outlet 13 are positioned on the same axis, the noise propagation and the noise propagation can be reduced due to the simplification of the air flow path, the noise generation opportunity is reduced, and the noise propagation in the pipelines and the connecting pieces is also reduced, thereby reducing the overall noise level of the system, the pipe diameter of the air inlet 12 is smaller than that of the air outlet 13 to generate noise reduction effect to a certain extent, the transmission assembly comprises a rotating shaft 3 and a circular disc 7 due to the principle of hydrodynamics, the rotating shaft 3 is movably clamped with the outer side surface of the output end of the motor 2, the circular disc 7 is welded to one end surface of the rotating shaft 3, the outer side surface of the circular disc 7 is movably contacted with the inside of the ventilation pipeline 14, the circular disc 7 ensures the rotating shaft 3 to stably rotate, the noise generated by instability in the rotating process of the rotating shaft 3 is reduced, the outer side surface of the rotating shaft 3 is welded with the first bevel gear 5, the inner wall of the ventilation pipeline 14 is fixedly provided with a sound absorption plate 15 through bolts, the sound absorption plate 15 is a device for reducing noise in the sound reflection and absorption environment, the rotary assembly comprises a circular ring 11 and four connecting columns 10, wherein the circular ring 11 is movably clamped at the inner wall of a ventilating duct 14, the four connecting columns 10 are welded on the inner side surface of the circular ring 11, the circular ring 11 facilitates the stable rotation of the circular arc fan blade 8 so as to reduce the generation of noise, one end surface of the four connecting columns 10 is welded on a transmission shaft 9 together, the outer side surface of the transmission shaft 9 is fixedly connected with the inner part of the circular arc fan blade 8, the outer side surface of the transmission shaft 9 is welded with a second bevel gear 6, the outer side surface of the second bevel gear 6 is meshed with the outer side surface of the first bevel gear 5, the first bevel gear 5 is matched with the second bevel gear 6 mutually, so that the improved rotation movement direction of the motor 2 is changed, the air inlet 12 and the air outlet 13 are positioned on the same horizontal line;

the motor 2 works to drive the rotating shaft 3 to rotate, the first bevel gear 5 and the second bevel gear 6 are matched with each other, the rotating shaft 3 and the circular arc fan blade 8 are enabled to work stably through the matching of the circular arc fan blade 7 and the circular arc fan blade 8, a calm environment is created, better working and living conditions are provided, the comfort level of the indoor environment and the living quality of people are improved, noise is reduced, interference to human bodies can be reduced, more pleasant environment is provided, relaxation and concentration of people are promoted, the risk of hearing damage can be reduced, and hearing health of people is protected.

It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-speed fan structure of making an uproar falls, includes high-speed fan base (4) and installs acoustic celotex board (1) at high-speed fan base (4) top surface, its characterized in that: the novel high-speed fan comprises a high-speed fan base (4), wherein a motor (2) is arranged on the top surface of the high-speed fan base (4), a transmission assembly is arranged on the outer side surface of the output end of the motor (2), a ventilating duct (14) is arranged on the top surface of the high-speed fan base (4), a rotating assembly is movably arranged in the ventilating duct (14), an arc fan sheet (8) is arranged on the outer side surface of the rotating assembly, the outer side surface of the ventilating duct (14) is in movable contact with the outer side surface of a sound insulation plate (1), an air inlet (12) and an air outlet (13) are arranged on the ventilating duct (14), the air inlet (12) and the air outlet (13) are located on the same axis, and the pipe diameter of the air inlet (12) is smaller than that of the air outlet (13).

2. The noise reduction structure of a high-speed fan according to claim 1, wherein: the transmission assembly comprises a rotating shaft (3) and a circular disc (7), wherein the rotating shaft (3) is movably arranged on the outer side surface of the output end of the motor (2), the circular disc (7) is arranged on one end surface of the rotating shaft (3), and the outer side surface of the circular disc (7) is in movable contact with the inside of the ventilation pipeline (14).

3. The noise reduction structure of a high-speed fan according to claim 2, wherein: the outer side surface of the rotating shaft (3) is provided with a first bevel gear (5), and the inner wall of the ventilating duct (14) is provided with a sound absorbing plate (15).

4. The noise reduction structure of a high-speed fan according to claim 1, wherein: the rotary assembly comprises a circular ring (11) and four connecting columns (10), wherein the circular ring (11) is movably installed at the inner wall of a ventilating duct (14), and the four connecting columns (10) are installed on the inner side surface of the circular ring (11).

5. The noise reduction structure of a high-speed fan according to claim 4, wherein: the four connecting columns (10) are provided with transmission shafts (9) on one end surface, and the outer side surfaces of the transmission shafts (9) are fixedly connected with the inner parts of the arc fan blades (8).

6. The noise reduction structure of a high-speed fan according to claim 5, wherein: the outer side surface of the transmission shaft (9) is provided with a second bevel gear (6), and the outer side surface of the second bevel gear (6) is meshed with the outer side surface of the first bevel gear (5).