CN219139453U - Envelope type wind wheel air duct structure - Google Patents

Abstract

The utility model discloses an enveloping type wind wheel air duct structure, which comprises a motor bracket and a wind wheel; the motor bracket comprises an annular bracket main body and a plurality of guide vanes, wherein the guide vanes are arranged on the inner side of the ring of the bracket main body at equal intervals around the center of the bracket main body; the tail edges of the blades of the wind wheel are embedded between the guide vanes. According to the utility model, the tail edges of the blades of the wind wheel are embedded between the guide vanes on the motor bracket, and the air flow is focused to the air outlet under the guide action of the guide vanes, so that the bypass loss is reduced, and the structure is applied to the air purifier, so that the aerodynamic performance and the air quantity of the air purifier can be further improved.

Description

Envelope type wind wheel air duct structure

Technical Field

The utility model relates to the technical field of air purifiers, in particular to an enveloping type wind wheel air channel 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 pollution, bacteria, allergens and the like) and effectively improving the air cleanliness, and is mainly divided into household, commercial, industrial, building and the like. The working principle of the air purifier is that a negative pressure area is generated by rotation of a centrifugal wind wheel, so that air enters the air purifier, and various pollutants in the air are filtered by an internal filter element and then clean air is released.

Referring to fig. 1, when the backward centrifugal wind wheel 2' is running, air flow enters from a negative pressure port of the wind wheel, and centrifugal force is generated by high-speed rotation of the wind wheel blade 21', under the action of centrifugal inertia and an air duct, the air flow is thrown out from the tail edge of the blade 21' (the tail edge is defined as the tail part of the blade 21' far away from the negative pressure port of the wind wheel and occupies about 1/3 of the total height of the wind wheel 2 '), and under the driving of the rotating blade 21', high-speed rotation of the wind wheel is formed at the tail edge of the blade 21', so that strong wind loss is caused, and the pneumatic performance and the air quantity of the air purifier are finally influenced.

Disclosure of Invention

The utility model aims to provide an envelope type wind wheel air duct structure which is applied to an air purifier, can reduce the bypass loss in the air flow output process and further improve the aerodynamic performance and the air quantity of the air purifier.

In order to achieve the above object, the solution of the present utility model is:

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

The number of the guide vanes is 11-17.

The distance between the blades of the wind wheel and the adjacent guide vanes is more than 4 mm.

The design of the fan blade adopts a standard arc curve, the range of the air inlet angle of the fan blade is 38-42 degrees, the range of the air outlet angle of the fan blade is 60-64 degrees, and the range of the extension angle of the wind wheel is 50-54 degrees.

After the technical scheme is adopted, the wind blade tail edge of the wind wheel is embedded between the guide vanes on the motor bracket, and the air flow is focused to the air outlet under the guide action of the guide vanes, so that the bypass loss is reduced, and the structure is applied to the air purifier, so that the aerodynamic performance and the air quantity of the air purifier can be further improved.

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 utility model;

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

FIG. 4 is a perspective view of a motor bracket according to an embodiment of the present utility model;

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

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

FIG. 7 is a cross-sectional view of a wind wheel according to an embodiment of the present utility model;

reference numerals illustrate:

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

2- - -wind wheel; 21-fan blade.

Detailed Description

In order to further explain the technical scheme of the utility model, the utility model is explained in detail by specific examples.

Referring to fig. 2 to 7, the utility model is an enveloping wind wheel air channel structure, comprising 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 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 utility model, the tail edges of the blades 21 of the wind wheel 2 are embedded between the guide vanes 12 on the motor bracket 1, and the air flow is focused to the air outlet under the guide action of the guide vanes 12, so that the bypass loss is reduced, and the structure is applied to the air purifier, so that the aerodynamic performance and the air quantity of the air purifier can be further improved.

The following are specific embodiments of the present utility model:

the number of the guide vanes 12 is 11-17. The more the number of the guide vanes 12 is, the more the guide effect is, but the more the number of the guide vanes 12 is, the processing difficulty is increased, so that the number of the guide vanes 12 is limited between 11-17 sheets, the guide effect can be met, the processing is convenient, and the production cost is saved.

The distance between the fan blades 21 of the wind wheel 2 and the adjacent guide vanes 12 is more than 4mm so as to maintain a safe distance and meet the test of falling.

Referring to fig. 7, the design of the wind wheel 2 and the wind blade 21 adopts a standard arc curve, the range of the air inlet angle alpha of the wind blade 21 is 38-42 degrees, the range of the air outlet angle beta of the wind blade 21 is 60-64 degrees, the range of the extension angle gamma of the wind wheel 2 is 50-54 degrees, wherein the air inlet angle alpha of the wind blade 21 is the included angle between the inner edge tangent line of the wind blade 21 and the diameter of the wind wheel 2 passing through the tangent point of the inner edge tangent line, the air outlet angle beta of the wind blade 21 is the included angle between the outer edge tangent line of the wind blade 21 and the diameter of the wind wheel 2 passing through the tangent point of the outer edge tangent line, and the extension angle gamma of the wind wheel 2 is the included angle between the inner end of the wind wheel 2 passing through the wind blade 21 and the radius of the outer end of the wind blade 21.

The technical effects of the utility model are illustrated by the following experimental data:

by analyzing the above test data, it can be derived that:

(1) the air quantity can be improved by matching the enveloping form between the guide vane and the fan blade;

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

(3) the air inlet angle, the air outlet angle and the extension angle can have higher air quantity and lower noise in a certain range.

The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims (4)

1. An envelope type wind wheel air duct structure is characterized in that:

comprises a motor bracket and a wind wheel;

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

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

2. An envelope wind turbine duct structure as claimed in claim 1 wherein:

the number of the guide vanes is 11-17.

3. An envelope wind turbine duct structure as claimed in claim 1 wherein:

the distance between the blades of the wind wheel and the adjacent guide vanes is more than 4 mm.

4. An envelope wind turbine duct structure as claimed in claim 1 wherein:

the design of the fan blade adopts a standard arc curve, the range of the air inlet angle of the fan blade is 38-42 degrees, the range of the air outlet angle of the fan blade is 60-64 degrees, and the range of the extension angle of the wind wheel is 50-54 degrees.

Images