vacuum cleaner impeller

A technology for vacuum cleaners and impellers, applied in vacuum cleaners, machines/engines, liquid fuel engines, etc., can solve the problems of increasing the cooling load and noise of the fan, reducing the energy conversion rate of the fan, etc., to reduce the axial eddy current, improve the energy conversion efficiency, The effect of reducing the possibility of resonance

Active Publication Date: 2019-02-19
SUZHOU HAIGE ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of axial vortex reduces the energy conversion rate of the fan and increases the heat dissipation load and noise of the fan

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Combine Figure 1-2 As shown, a vacuum cleaner impeller includes at least: a front wheel cover 100, which is a disc structure, the middle of the front wheel cover 100 is provided with a first through hole 110; a rear wheel cover 200, which is a disc structure, the The edge of the rear wheel cover 200 is fixedly connected to the outer edge of the front wheel cover 100 through a deflector 210 with a cylindrical shell structure. The deflector 210 is provided with a plurality of second through holes 211; and the blade 300 is fixed. Disposed between the front wheel cover 100 and the rear wheel cover 200, the blade 300 includes a plurality of main blades 310 and a plurality of splitter blades 320. The main blades 310 extend from the front wheel cover 100 in the radial direction. The edge of the first through hole extends outward to a first predetermined distance from the outer edge of the front wheel cover 100, and the main blade 310 extends from the rear side wall of the fron...

Embodiment 2

[0035] The dividing blades 320 are arranged non-uniformly, and the distance between the two adjacent groups of dividing blades 320 and the corresponding main blade 310 with the closest distance is not equal. The distance between the dividing blade 320 and the closest main blade 310 is not less than one tenth of the distance between two adjacent groups of main blades 310. The dividing blade 320 cuts each air flow channel between the main blades 310. If the air flow channels formed by the division are the same size, the air at the outlet of the air flow channel will easily resonate due to the similar movement state. It produces louder noise and reduces the energy conversion efficiency of the fan. Therefore, by controlling the position of the splitter blade 320 to make the divided air flow passages different to avoid the above problems, at the same time, the splitter blade 320 should not be too close to the main blade 310, otherwise it is easy for air to quickly pass through this ...

Embodiment 3

[0037] The second through holes 211 on the flow deflector 210 are in an elliptical shape, and the second through holes 211 are evenly distributed. The number of the second through holes 211 corresponds to the main blade 310 one by one, and the ellipse is long The angle between the shaft and the generatrix of the cylindrical shell is 0.5-0.7 times the first angle. The inclination direction of the second through hole 211 is consistent with the inclination direction of the main blade 310. The guide cover 210 is provided with the second through hole 211 to further guide the airflow discharged from the impeller blades, so as to reduce the turbulent flow of the air after passing through the air flow channel formed by the blades, thereby improving The stability of the overall fan.

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Abstract

The invention relates to an impeller of a dust collector. The impeller at least comprises a front wheel cover, a rear wheel cover and blades fixedly arranged between the front wheel cover and the rear wheel cover. A first through hole is formed in the middle of the front wheel cover. The edge of the rear wheel cover is fixedly connected with the outer edge of the front wheel cover through a fairing of a cylindrical shell structure. The blades comprise the multiple main blades and the multiple splitter blades. Through an air runner formed by the blades, air flowing through the air runner has higher guidance quality and stability; through the splitter blades, the space of the air runner is reduced, and axial vortexes are reduced; since the splitter blades are distributed unevenly, the possibility that air currents of the same volume cause resonance is reduced, noise of a fan is lowered, and the energy conversion efficiency of the fan is improved; and guide baffles are used for guiding the direction of air flow and reducing the axial vortexes. The direction of air flow is further guided through the fairing, and stability of the whole fan is improved.

Description

Technical field [0001] The invention relates to the field of vacuum cleaners, in particular to a vacuum cleaner impeller. Background technique [0002] According to the direction of gas flow, fans can be classified into centrifugal, axial flow, diagonal flow and cross flow types. When the centrifugal fan works, the power machine drives the impeller to rotate in the volute casing, and air is sucked in from the center of the impeller through the suction port. Due to the dynamic action of the blade on the gas, the gas pressure and speed are increased, and under the action of centrifugal force, it is thrown along the blade path to the casing and discharged from the exhaust port. [0003] The centrifugal fan has a large air volume and pressure range, and low noise. The fans used in the vacuum cleaner are mostly medium-pressure centrifugal fans. The impeller is the main component of the fan. Its geometry, size, number of blades and manufacturing accuracy have a great influence on perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/30F04D29/66A47L9/00
CPCA47L9/00F04D29/281F04D29/30F04D29/663F04D29/666F04D29/667
Inventor 陆苏忠
Owner SUZHOU HAIGE ELECTRICAL TECH CO LTD
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