阅读说明：本技术 一种包络式风轮风道结构 (Enveloping type wind wheel air duct structure ) 是由 钟思 李煌阳 苏灵锐 于 2021-10-18 设计创作，主要内容包括：本发明公开一种包络式风轮风道结构,包括电机支架和风轮；所述电机支架包括环形的支架主体和若干导流叶片,所述导流叶片环绕所述支架主体的中心等间隔设置在所述支架主体的环内侧；所述风轮的风叶尾缘嵌入所述导流叶片之间。本发明通过将风轮的风叶尾缘嵌入电机支架上的导流叶片之间,通过导流叶片的导流作用,将气流聚焦到出风口,从而减少绕流损耗,将该结构应用在空气净化器中,便可以进一步提升空气净化器的气动性能和风量。(The invention discloses a wrapped wind wheel air duct structure, which comprises a motor bracket and a wind wheel; the motor support comprises an annular support main body and a plurality of guide vanes, and the guide vanes are arranged on the inner side of the ring of the support main body at equal intervals around the center of the support main body; the tail edges of the fan blades of the wind wheel are embedded between the guide vanes. According to the invention, the tail edges of the fan blades of the wind wheel are embedded between the guide vanes on the motor support, and the airflow is focused to the air outlet through the guide effect of the guide vanes, so that the streaming loss is reduced.)

1. The utility model provides a envelop type wind wheel wind channel structure which characterized in that:

comprises a motor bracket and a wind wheel;

the motor support comprises an annular support main body and a plurality of guide vanes, and the guide vanes are arranged on the inner side of the ring of the support main body at equal intervals around the center of the support main body;

the tail edges of the fan blades of the wind wheel are embedded between the guide vanes.

2. A wrap-around wind wheel tunnel structure according to claim 1, wherein:

the number of the guide vanes is 11-17.

3. A wrap-around wind wheel tunnel structure according to claim 1, wherein:

the distance between the fan blade of the wind wheel and the adjacent guide vane is set to be more than 4 mm.

4. A wrap-around wind wheel tunnel structure according to claim 1, wherein:

the fan blade is designed by adopting a standard arc curve, the air inlet angle of the fan blade ranges from 38 degrees to 42 degrees, the air outlet angle of the fan blade ranges from 60 degrees to 64 degrees, and the extension angle of the wind wheel ranges from 50 degrees to 54 degrees.

Technical Field

The invention relates to the technical field of air purifiers, in particular to a wrapped wind wheel air duct structure.

Background

The air purifier is a product capable of adsorbing, decomposing or converting various air pollutants (such as PM2.5, dust, pollen, peculiar smell, formaldehyde and other decoration pollutants, bacteria, allergens and the like) and effectively improving air cleanliness, and is mainly divided into household, commercial, industrial, building and the like. The operating principle of the air purifier is that a negative pressure area is generated by the rotation of the centrifugal wind wheel, so that air enters the air purifier, and various pollutants in the air are filtered by the internal filter element and then released into clean air.

Referring to fig. 1, when the backward centrifugal wind wheel 2 ' operates, airflow enters from the wind wheel negative pressure port, centrifugal force is generated by high-speed rotation of the wind wheel blades 21 ', the airflow is thrown out from the trailing edge of the blades 21 ' (the trailing edge is defined as the tail of the blade 21 ' far away from the wind wheel negative pressure port and occupies about 1/3 range of the total height of the wind wheel 2 ') under the actions of centrifugal inertia and the wind channel, and under the driving of the rotating blades 21 ', the trailing edge of the blade 21 ' forms high-speed rotating bypass flow, which causes strong bypass flow loss, and finally affects the aerodynamic performance and the wind volume of the air purifier.

Disclosure of Invention

The invention aims to provide a wrapped wind wheel air channel structure which is applied to an air purifier and can reduce the streaming loss in the air flow output process and further improve the pneumatic performance and air quantity of the air purifier.

In order to achieve the above purpose, the solution of the invention is:

a wrapped wind wheel air duct structure comprises a motor bracket and a wind wheel; the motor support comprises an annular support main body and a plurality of guide vanes, and the guide vanes are arranged on the inner side of the ring of the support main body at equal intervals around the center of the support main body; the tail edges of the fan blades of the wind wheel are embedded between the guide vanes.

The number of the guide vanes is 11-17.

The distance between the fan blade of the wind wheel and the adjacent guide vane is set to be more than 4 mm.

The fan blade is designed by adopting a standard arc curve, the air inlet angle of the fan blade ranges from 38 degrees to 42 degrees, the air outlet angle of the fan blade ranges from 60 degrees to 64 degrees, and the extension angle of the wind wheel ranges from 50 degrees to 54 degrees.

After the technical scheme is adopted, the tail edges of the fan blades of the wind wheel are embedded between the guide vanes on the motor support, and the airflow is focused to the air outlet through the guide effect of the guide vanes, so that the streaming loss is reduced.

Drawings

FIG. 1 is a schematic diagram of the operation of a conventional wind turbine;

FIG. 2 is a perspective view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is a perspective view of a motor mount according to an embodiment of the present invention;

FIG. 5 is a bottom view of a motor bracket according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a motor mount according to an embodiment of the present invention;

figure 7 is a cross-sectional view of a rotor according to an embodiment of the present invention;

the reference numbers illustrate:

1- -motor mount; 11-a stent body; 12- - -guide vanes;

2- - -a wind wheel; 21- -fan blades.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

Referring to fig. 2 to 7, the present invention is a wrapped wind wheel air duct structure, including a motor bracket 1 and a wind wheel 2;

the motor bracket 1 comprises an annular bracket main body 11 and a plurality of guide vanes 12, wherein the guide vanes 12 are arranged on the inner side of the ring of the bracket main body 11 at equal intervals around the center of the bracket main body 11;

the tail edges of the blades 21 of the wind wheel 2 are embedded between the guide vanes 12.

According to the invention, the tail edges of the fan blades 21 of the wind wheel 2 are embedded between the guide vanes 12 on the motor support 1, and the airflow is focused to the air outlet through the guide action of the guide vanes 12, so that the streaming loss is reduced.

The following are specific examples of the present invention:

the number of the guide vanes 12 is 11 to 17. The more the number of guide vanes 12 is, the more sufficient the effect of water conservancy diversion, but the increase of the number of guide vanes 12 also can make the degree of difficulty of processing increase, therefore with the quantity restriction of guide vanes 12 between 11~17, can satisfy the water conservancy diversion effect, also be convenient for process, save manufacturing cost.

The distance between the fan blade 21 of the wind wheel 2 and the adjacent guide vane 12 is set to be more than 4mm so as to keep a safe distance and meet the test in the aspect of falling.

Referring to fig. 7, the fan blade 21 of the wind wheel 2 is designed by adopting a standard circular arc curve, the air inlet angle α of the fan blade 21 ranges from 38 degrees to 42 degrees, the air outlet angle β of the fan blade 21 ranges from 60 degrees to 64 degrees, the extension angle γ of the wind wheel 2 ranges from 50 degrees to 54 degrees, wherein the air inlet angle α of the fan blade 21 is the included angle between the tangent line of the inner edge of the fan blade 21 and the diameter of the wind wheel 2 passing through the tangent point of the inner edge, the air outlet angle β of the fan blade 21 is the included angle between the tangent line of the outer edge of the fan blade 21 and the diameter of the wind wheel 2 passing through the tangent point of the outer edge, and the extension angle γ of the wind wheel 2 is the included angle between the inner end of the wind wheel 2 passing through the fan blade 21 and the radius of the outer end of the fan blade 21.

The technical effects of the present invention are illustrated by the following test data:

by analyzing the above experimental data, it can be found that:

firstly, the air quantity can be improved by the matching of the envelope form between the guide vanes and the fan blades;

the number of the guide vanes is 15, and the air quantity is higher than that of 9 vanes;

and the air inlet angle, the air outlet angle and the extension angle can have higher air volume and lower noise within a certain range.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.