CN211314658U

CN211314658U - Low-noise air-assisted spray fan

Info

Publication number: CN211314658U
Application number: CN201922463716.6U
Authority: CN
Inventors: 周小雨; 李庆良
Original assignee: Zhengzhou Zhengtong Fan Manufacturing Co ltd
Current assignee: Zhengzhou Zhengtong Fan Manufacturing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-21
Anticipated expiration: 2029-12-31

Abstract

The low-noise air-assisted spray fan effectively solves the problem of high noise of the spray fan; the technical scheme for solving the technical problem is as follows: the low-noise air-assisted spray fan comprises an outer cylinder, an inner cylinder, a motor and a spray water ring, wherein the outer cylinder comprises a current collector and an air cylinder which are connected into a whole; a sinusoidal arc is arranged at the joint of the guide plate and the outer cylinder, and sawteeth are arranged on one side of the outlet end of the guide plate; the utility model discloses simple structure, through designing unique guide plate, the air current is less through the inner tube windage, reduces the noise under the condition that reduces the windage to can improve fan efficiency.

Description

Low-noise air-assisted spray fan

Technical Field

The device relates to the technical field of environment-friendly dust removing equipment, in particular to a low-noise air-assisted spray fan.

Background

At present, air-assisted spray fans used in domestic and foreign markets all adopt medium-high speed axial flow and jet fans, high-speed airflow generated by the fans can generate large noise, sound-absorbing materials are added to the axial flow fans and the jet fans in the mode of solving the noise in the market, and the sound-absorbing cotton, the micro-perforated plates and other materials have the characteristic of large resistance and can reduce the efficiency of the fans.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides a low noise air-assisted spraying fan, the effectual big problem of spraying fan noise of having solved.

The technical scheme for solving the technical problem is as follows: the low-noise air-assisted spray fan comprises an outer cylinder, an inner cylinder, a motor and a spray water ring, wherein the outer cylinder comprises a current collector and an air cylinder which are connected into a whole; the junction of the guide plate and the outer cylinder is provided with a sine arc, and one side of the outlet end of the guide plate is provided with sawteeth.

Furthermore, a protective net positioned outside the fan blade is arranged at the end part of the current collector.

Furthermore, the end part of the motor is provided with a wheel cover for fixing the fan blade, and the diameter of the wheel cover is larger than that of the inner cylinder.

Furthermore, a plurality of nozzles are uniformly arranged on the spray water ring.

The utility model discloses simple structure, through designing unique guide plate, the air current is less through the inner tube windage, reduces the noise under the condition that reduces the windage to can improve fan efficiency.

Drawings

Fig. 1 is a first perspective view of the present invention.

Fig. 2 is a second perspective view of the present invention.

Fig. 3 is a perspective view of the present invention with the protection net removed.

Fig. 4 is a schematic side sectional view of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be seen from figures 1 to 4, the low-noise air-assisted spray fan is characterized by comprising an outer cylinder, an inner cylinder 1, a motor 2 and a spray water ring 3, wherein the outer cylinder comprises a current collector 4 and an air cylinder 5 which are connected into a whole, the inner cylinder 1 and the outer cylinder are coaxially arranged, the motor 2 is arranged in the inner cylinder 1, the end part of the motor 2 is connected with a fan blade 6, the inner cylinder 1 and the outer cylinder are sleeved to form an air channel, a guide plate 7 is arranged between the inner cylinder 1 and the outer cylinder, the number of the guide plates 7 and the number of the fan blades 6 are mutually prime numbers, the guide plates 7 form an air channel, high-speed air flow accelerated under the action of the fan blade 6 vertically outputs the air cylinder 5 under the action of the air channel, the number of the guide plates 7 and the number of the fan blades 6 are mutually prime numbers, so that the fan blade 6 and the guide plate 7 cannot generate resonance, the noise generated due to the resonance is greatly reduced, dedusting; guide plate 7 is equipped with sinusoidal arc 8 with the urceolus junction, guide plate 7 is equipped with sawtooth 9 in exit end one side, both cooperate each other for the resistance of the high-speed air current in the wind channel reduces greatly, and sinusoidal arc 8 can weaken the high-speed air current because of the noise that produces the vortex and cause moreover, and sawtooth 9 can break up into less vortex with the big vortex in the high-speed air current, thereby plays the effect of making an uproar of falling.

In order to avoid being damaged by the fan blades 6, the end parts of the current collectors 4 are provided with protective nets 10 positioned outside the fan blades 6, so that the blades 6 are prevented from being touched from the outside to cause scratches.

In order to facilitate use, the end part of the motor 2 is provided with a wheel cover 11 for fixing the fan blade 6, the diameter of the wheel cover 11 is slightly larger than that of the inner cylinder 1, and the size of the wheel cover 11 is consistent with that of the inner cylinder 1 as far as possible under the condition that air flow is not influenced, so that wind resistance can be reduced, the efficiency of the fan is improved, and the spraying range is ensured.

For convenience of use, a plurality of nozzles 12 are uniformly arranged on the spray water ring 3.

Compared with the prior art, the utility model, following beneficial effect has: 1) the sine arc 8 structure avoids the traditional complex process of adding sound-absorbing materials, and greatly improves the manufacturing efficiency; 2) the sawtooth 9 structure at the tail part of the guide plate 7 eliminates the noise generated by the vortex phenomenon of high-speed airflow; the two are mutually matched and act together to play a role in reducing noise.

Claims

1. The low-noise air-assisted spray fan is characterized by comprising an outer barrel, an inner barrel (1), a motor (2) and a spray water ring (3), wherein the outer barrel comprises a current collector (4) and an air barrel (5) which are connected into a whole, the inner barrel (1) and the outer barrel are coaxially arranged, the motor (2) is arranged in the inner barrel (1), the end part of the motor (2) is connected with a fan blade (6), a guide plate (7) is arranged between the inner barrel (1) and the outer barrel, the number of the guide plates (7) and the number of the fan blades (6) are mutually prime numbers, and the spray water ring (3) is arranged at the end part of the air barrel; the connecting part of the guide plate (7) and the outer cylinder is provided with a sine arc (8), and one side of the outlet end of the guide plate (7) is provided with sawteeth (9).

2. The low-noise air-assisted spray fan according to claim 1, wherein a protective net (10) positioned outside the fan blades (6) is arranged at the end part of the current collector (4).

3. The low-noise air-assisted spray fan according to claim 1, wherein a wheel cover (11) for fixing the fan blades (6) is arranged at the end of the motor (2), and the diameter of the wheel cover (11) is larger than that of the inner cylinder (1).

4. The low noise air-assisted spray fan according to claim 1, characterized in that the spray water ring (3) is uniformly provided with a plurality of nozzles (12).