CN212563777U

CN212563777U - Wind wheel with primary and secondary blades

Info

Publication number: CN212563777U
Application number: CN202021144059.5U
Authority: CN
Inventors: 孙德富; 汤俊杰; 杨笑梅
Original assignee: Aupu Home Style Corp Ltd
Current assignee: Aopu Intelligent Technology Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-19
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a primary and secondary blade wind wheel belongs to air supply arrangement's component, and the structure and the size of every blade of current centrifugal wind wheel are all the same, can cause blade air inlet area to diminish when increasing amount of wind and static pressure through adjustment blade quantity and blade radial width, and blade air intake resistance risees, and the flow reduces, the utility model discloses an impeller, its blade include female blade, secondary blade, and secondary blade's radial width is less than female blade's radial width, female blade and secondary blade interval distribution. The number of the blades is increased within a certain range, so that the air inlet area of the blades is not too small, and the working capacity of the blades can be increased, thereby improving the total pressure. When the radial width of the blade is increased in a certain range, the increase of the air inlet resistance of the blade and the reduction of the air volume caused by the over-small area of the air inlet of the blade can be avoided. Because the vortex that produces between the blade can be eliminated to the sub-blade to the energy loss of fan has been reduced, the noise reduction.

Description

Wind wheel with primary and secondary blades

Technical Field

The utility model belongs to air supply arrangement's component, concretely relates to primary and secondary blade wind wheel.

Background

The centrifugal wind wheel is used as a wind supply part of the bathroom warmer and is driven by a motor to operate. When the air quantity and the noise of the bathroom warmer are improved, the centrifugal wind wheel and the volute air duct are optimized and improved. When improving a centrifugal wind wheel, the diameter D, the height H, the blade inlet angle α, the blade outlet angle β, the number of blades, and the radial width W of the blades are generally optimized. However, the diameter and height of the centrifugal wind wheel are limited by the size of the warmer product, and generally no adjustment space is provided, and after the inlet angle and the outlet angle of the blades are adjusted to be optimal, the air volume and the static pressure are generally increased by adjusting the number of the blades and the radial width of the blades.

However, in the centrifugal wind wheel with the conventional structure, the structure and the size of each blade are the same, the air inlet area of the blades is reduced by increasing the number of the blades and the radial width of the blades blindly, so that the resistance of the air inlet of the blades is increased, and the flow is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model and the technical task that provide are that the structure of overcoming every blade of current centrifugal wind wheel causes blade air inlet area to diminish when adjusting blade quantity and the radial width of blade and increasing the amount of wind and static pressure all the same through what send with the size, and blade air intake resistance risees, and the defect of flow reduction provides a primary and secondary blade wind wheel for increasing the amount of wind and static pressure.

In order to achieve the above object, the utility model discloses a primary and secondary blade wind wheel, including wheel hub and the blade that distributes on the circumference that uses the wheel hub center as the centre of a circle, characterized by: the blade comprises a female blade and a sub-blade, wherein the radial width of the sub-blade is smaller than that of the female blade, and the female blade and the sub-blade are distributed at intervals to form a larger air inlet interval between the adjacent female blades.

As a preferable technical means: the outer edges of the female blade and the male blade are located on the same circumference, and the inner edges of the female blade and the male blade are located on different circumferences.

As a preferable technical means: the female blades and the sub blades are distributed at intervals one by one.

As a preferable technical means: the outer periphery of the hub forms a first end plate, the female blade and the male blade extend axially, one end of each female blade is connected with the first end plate, and the other end of each female blade is connected with a second end plate.

The utility model discloses an impeller, its blade include female blade, sub-blade, and sub-blade's radial width is less than female blade's radial width, and female blade and sub-blade interval distribution have following advantage:

1. the number of the blades is increased within a certain range, so that the air inlet area of the blades is not too small, and the working capacity of the blades can be increased, thereby improving the total pressure.

2. When the radial width of the blade is increased in a certain range, the increase of the air inlet resistance of the blade and the reduction of the air volume caused by the over-small area of the air inlet of the blade can be avoided.

3. Because the vortex that produces between the blade can be eliminated to the sub-blade to the energy loss of fan has been reduced, the noise reduction.

Drawings

FIG. 1 is a side view of the wind wheel with primary and secondary blades;

FIG. 2 is an axial orthographic view of the parent-child blade rotor of FIG. 1;

FIG. 3 is a schematic side elevational view of a wind wheel;

FIG. 4 is a schematic illustration of blade inlet angle α, blade outlet angle β;

FIG. 5 is a schematic view of the air intake space between the female blades of the present invention;

the reference numbers in the figures illustrate:

10 hub, 20 first end plate, 30 second end plate, 40 female blade, 50 sub blade and 60 shaft sleeve;

the wind power generation system comprises a wind wheel D, a wind wheel H, a wind wheel height H, an inlet angle alpha blade, an outlet angle beta blade, the radial width of a W1 female blade, the radial width of a W2 sub-blade, an S wind inlet interval, a first circumference of c1, a second circumference of c2 and a third circumference of c 3.

Detailed Description

The present invention will be further explained with reference to the drawings attached to the specification.

As shown in fig. 1-2 and 5, the wind turbine with primary and secondary blades includes a hub 10, a blade, a first end plate 20, and a second end plate 30.

The hub 10 is provided with a hub 60 at its center for mounting on a motor shaft to be rotated by the motor shaft with the entire rotor, and the outer periphery of the hub 10 forms the first end plate 20.

The blades comprise a female blade 40 and a male blade 50 which extend axially, the radial width W2 of the male blade is smaller than the radial width W1 of the female blade, the female blade 40 and the male blade 50 are distributed on a circumference which takes the center of a hub as a center at intervals, the outer edges of the female blade and the male blade are located on a first circumference c1, the inner edge of the female blade is located on a second circumference c2, and the inner edge of the male blade is located on a third circumference c 3. Thereby, a large air intake space S is formed between adjacent female blades.

During manufacturing, the female blade 40 and the male blade 50 are preferably injection molded together with the first end plate 20, the hub 10, the bushing 60, and the second end plate 30. The second end plate 30 may be attached to the other end of the female blade or the male blade as a separate component.

The primary and secondary blade wind wheel comprises a hub, a shaft sleeve and a first end plate which form a supporting frame; the blade is a main air supply component; the second end plate plays roles in connection, support and reinforcement. The wind wheel is driven by the motor to rotate, air enters from the inlet of the blade and exits from the outlet after being pressurized by the blade.

Because the radial width of son blade is less than the radial width of female blade for can guarantee that the air inlet interval of blade entrance can not the undersize when increasing blade quantity, blade quantity is the sum of son blade and female blade, but the air inlet interval of blade entrance is the interval between two female blades.

The air inlet interval does not become little, just can not cause the air current confusion of air inlet interval department and arouse blockking up, increase the loss, owing to reduced air current confusion and swirl, improved the static pressure, the noise of this primary and secondary blade wind wheel is lower under the circumstances that keeps equal amount of wind.

Meanwhile, the number of the blades of the wind wheel with the same specification can be increased properly, the spacing between the blades and the distribution density of the blades are increased, the separation and backflow of air flow among the blades are reduced, the efficiency of the wind wheel is increased, and therefore the air volume and the static pressure are improved, and the noise is reduced.

Increasing the radial width does not cause unsmooth air intake and greater loss due to too narrow air intake intervals.

Because the vortex is reduced, the smooth air inlet is increased, and the noise is reduced.

Claims

1. Primary and secondary blade wind wheel, including wheel hub and the blade of distribution on the circumference that uses the wheel hub center as the centre of a circle, characterized by: the blade comprises a female blade and a sub-blade, wherein the radial width of the sub-blade is smaller than that of the female blade, and the female blade and the sub-blade are distributed at intervals to form a larger air inlet interval between the adjacent female blades.

2. The wind wheel with primary and secondary blades according to claim 1, wherein: the outer edges of the female blade and the male blade are located on the same circumference, and the inner edges of the female blade and the male blade are located on different circumferences.

3. The wind wheel with primary and secondary blades according to claim 1, wherein: the female blades and the sub blades are distributed at intervals one by one.

4. The wind wheel with primary and secondary blades according to claim 1, wherein: the outer periphery of the hub forms a first end plate, the female blade and the male blade extend axially, one end of each female blade is connected with the first end plate, and the other end of each female blade is connected with a second end plate.