CN216111468U

CN216111468U - Novel axial fan casing structure

Info

Publication number: CN216111468U
Application number: CN202122483954.0U
Authority: CN
Inventors: 温志勇; 刘健华; 郭志强
Original assignee: Guangdong Zhaoqing Deton Co ltd
Current assignee: Guangdong Zhaoqing Deton Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-22
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to the technical field of axial flow fan products, in particular to a novel axial flow fan shell structure which comprises a wind shell assembly and a noise elimination part which are fixedly connected, wherein the wind shell assembly comprises a cylindrical wind shell body, a hub assembly, a guide vane and a motor mounting plate; the noise elimination portion comprises a front side plate, a rear side plate, an outer sealing plate, an inner porous plate and noise elimination cotton, and the noise elimination cotton is filled in a space defined by the front side plate, the rear side plate, the outer sealing plate and the inner porous plate. The casing structure of this fan has better noise reduction, and the noise that the during operation fan produced is little, and the installation space can be saved effectively in the miniaturized ability of appearance, and its air current guidance quality is good in addition, reduces the rotatory eddy current loss that produces of air current, has higher fan availability factor.

Description

Novel axial fan casing structure

Technical Field

The utility model relates to the technical field of axial flow fan products, in particular to a novel axial flow fan shell structure.

Background

The existing casing structure of axial flow fan generally has the following two structures:

the first one is that the mounting mode is IMB3 (base with bottom feet, end cover without flange) motor mounting plate, and the shell structure of cylinder;

and the other type is provided with an IMB5 (the base is not provided with a bottom foot, and the end cover is provided with a flange) motor hub, a guide vane and a cylindrical shell structure.

For the axial flow fan, the casing is used for fixing the motor and the impeller, and the impeller rotates under a stable condition, so that airflow with thrust is continuously generated, and meanwhile, the casing also has a certain guiding function on the airflow.

The casing structure volume of the axial fan commonly used at present is great, the noise generated during use is great, and the air current has certain loss, and the availability factor is lower.

Therefore, the research and development of a novel axial flow fan casing structure which has good noise reduction effect, low noise, installation space saving, good air flow guiding performance and effective use effect improvement is urgent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and particularly discloses a novel axial flow fan casing structure which has the advantages of good noise reduction effect, low fan noise, small appearance, capability of effectively saving installation space, good airflow guidance performance, reduction of eddy loss generated by airflow rotation and high use efficiency.

In order to achieve the technical purpose, the utility model is realized according to the following technical scheme:

the utility model relates to a novel axial flow fan casing structure, which comprises a wind casing component and a silencing part which are fixedly connected with each other,

the wind shell assembly comprises a cylindrical wind shell body, a hub assembly, guide vanes and a motor mounting plate, wherein the hub assembly comprises a hub plate and a hub coaming plate arranged on the hub plate, and the guide vanes are fixedly connected with the motor mounting plate;

the noise elimination portion comprises a front side plate, a rear side plate, an outer sealing plate, an inner porous plate, a porous plate fixing support and noise elimination cotton, the porous plate fixing support is used for fixing the inner porous plate, the porous plate fixing support is welded in the axial direction of the outer sealing plate, and the noise elimination cotton is filled in a space defined by the front side plate, the rear side plate, the outer sealing plate and the inner porous plate.

As a further improvement of the technology, a porous plate fixing support is installed in the axial direction of the outer sealing plate, and the inner porous plate is fixed on the porous plate fixing support through the self-plugging rivet.

As a further improvement of the technology, the edge of the wind outlet of the guide vane is in a wing-shaped bionic design.

As a further improvement of the above technology, the holes on the inner porous plate are staggered, the diameter of each hole is 3mm, the distance between two horizontally adjacent holes is 6mm, and the distance between two vertically adjacent holes is 5 mm.

Compared with the prior art, the utility model has the beneficial effects that:

(1) when the axial flow fan casing structure is used, airflow generated by rotation of the impeller is blown to the guide vanes, and the rotating airflow is changed into horizontal airflow through the flow guide of the guide vanes, so that the eddy loss generated by the rotation of the airflow is reduced; in addition, due to the bionic design of the shape of the wing at the outlet of the guide vane, the airflow noise of the airflow at the outlet of the guide vane is effectively reduced, so the noise reduction effect is good and the noise is low;

(2) when the axial flow fan shell structure is used, horizontal airflow from the guide vanes passes through the porous plate of the silencer section, sound energy is absorbed by the pore friction and the silencing cotton, energy is greatly reduced, noise caused by impact of the airflow is reduced, and the silencing effect is good;

(3) according to the axial flow fan casing structure, the silencing part is a part of the casing, the effect of the silencer is achieved, the noise requirement of a client is met, and meanwhile, the installation space is greatly saved.

Drawings

The utility model is described in detail below with reference to the following figures and specific embodiments:

FIG. 1 is a schematic structural view of an axial flow fan housing according to the present invention;

FIG. 2 is a front view of an axial flow fan according to the present invention;

FIG. 3 is a schematic view of the internal structure of an axial flow fan according to the present invention;

FIG. 4 is a front view of the blower housing assembly of the present invention;

FIG. 5 is a side view of the wind cowl assembly of the present invention;

FIG. 6 is a sectional view taken along line A-A of FIG. 5;

FIG. 7 is a front view of a muffler portion according to the present invention;

FIG. 8 is an enlarged schematic view of the above-mentioned point B in FIG. 7;

FIG. 9 is a side view of a muffler in accordance with the present invention;

FIG. 10 is a schematic diagram of the construction of an inner porous plate according to the present invention;

fig. 11 is an enlarged schematic view of C in fig. 10.

Detailed Description

As shown in fig. 1 to fig. 3, the casing structure of the axial flow fan of the present invention includes a casing assembly 1 and a sound-deadening portion 2 fixedly connected to each other. As shown in fig. 4 to 6, the wind shell assembly 1 includes a cylindrical wind shell body 11, a hub assembly 12, guide vanes 13, and a motor mounting plate 14, the hub assembly 12 includes a hub plate 121 and a hub shroud 122 mounted on the hub plate 121, and the guide vanes 13 are fixedly connected to the motor mounting plate 14. The guide vanes 13 are mounted on the impeller 10, the driving motor 20 is mounted on the motor mounting plate 14, and the bottom of the sound attenuation part 2 is provided with a foot 30 for use.

As shown in fig. 7 to 9, the sound-deadening portion 2 includes a front side plate 21, a rear side plate 22, an outer sealing plate 23, an inner porous plate 24, a porous plate fixing bracket 25 for fixing the inner porous plate 24, and sound-deadening cotton 26, the porous plate fixing bracket 25 is welded to the axial direction of the outer sealing plate 23, the inner porous plate 24 is fixed to the porous plate fixing bracket 25 by blind rivets 27, and the sound-deadening cotton 26 is filled in a space surrounded by the front side plate 21, the rear side plate 22, the outer sealing plate 23, and the inner porous plate 24.

In the utility model, the edge of the wind outlet of the guide vane 13 is in a wing-shaped bionic design.

As shown in fig. 10 and 11, the inner perforated plate 24 has a hole diameter D of 3mm, a distance L between two horizontally adjacent holes of 6mm, and a distance H between two vertically adjacent holes of 5 mm.

The fan shell structure has a good noise reduction effect, generates low noise when in use, is miniaturized in appearance, can effectively save installation space, has good airflow guidance performance, reduces eddy loss generated by airflow rotation, and has a good use effect and wind use efficiency.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are also intended to be included within the scope of the claims and equivalent technologies of the present invention, unless they depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a novel axial fan casing structure which characterized in that: comprises a wind shell component and a silencing part which are fixedly connected,

the noise elimination portion comprises a front side plate, a rear side plate, an outer sealing plate, an inner porous plate and noise elimination cotton, and the noise elimination cotton is filled in a space defined by the front side plate, the rear side plate, the outer sealing plate and the inner porous plate.

2. The new axial flow fan casing structure of claim 1, characterized in that: the axial direction of outer shrouding installs the perforated plate fixed bolster, interior perforated plate passes through self-plugging rivet to be fixed on the perforated plate fixed bolster.

3. The new axial flow fan casing structure of claim 1 or 2, characterized in that: the edge of the wind outlet of the guide vane is in a wing-shaped bionic design.

4. The new axial flow fan casing structure of claim 1, characterized in that: the holes on the inner porous plate are distributed in a staggered mode, the aperture of each hole is 3mm, the distance between two adjacent holes in the horizontal direction is 6mm, and the distance between two adjacent holes in the vertical direction is 5 mm.