Vacuum cleaner impeller and vacuum cleaner

Abstract

The invention provides a dust collector impeller, which is characterized in that the impeller comprises a bottom plate and N pieces of vanes arranged on the bottom plate, wherein N is greater than orequal to 4 and less than or equal to 16; the cross section of each vane is provided with a middle arc line; the middle arc line comprises a starting point, an end point and a middle point positioned between the starting point and the end point and also comprises a first circular arc and a second circular arc, wherein the first circular arc and the second circular arc are mutually tangent to the middle point, the first circular arc is positioned between the starting point and the middle point, the second circular arc is positioned between the middle point and the end point, and the center of acircle of the first circular arc and the center of a circle of the second circular arc are positioned on one side of the middle arc line; a straight line segment for connecting the starting point andthe end point is b; the projection of a line segment for connecting the starting point and the end point on the straight line segment b is a straight line segment a, a is equal to [rho]b, and [rho]b is greater than or equal to 0.4 and less than or equal to 0.5; and an acute angle included angle between a tangent line of the middle arc line on the starting point and a tangent line of the middle arcline on the end point is [theta], the circular arc angle of the second circular arc is X<2>, and X<2> is equal to [rho] [theta]. By use of the impeller, vibration and noise generated when the impeller rotates are lowered, and working efficiency is improved.

Description

technical field [0001] The disclosure belongs to the field of household appliances, and specifically provides a vacuum cleaner and a vacuum cleaner impeller. Background technique [0002] The vacuum cleaner mainly includes a housing, a motor arranged in the housing, and an impeller driven and connected to the motor. When the vacuum cleaner is working, the motor drives the impeller to rotate at a high speed, thereby forming a negative air pressure in the housing to absorb dust. [0003] The impeller on the existing vacuum cleaner generally includes at least one fixed plate and a plurality of blades fixed to the at least one fixed plate. In order to avoid shaking when the impeller rotates, multiple blades are arranged at equal intervals around the rotation axis of the impeller with the same attitude. [0004] When designing the shape of the blade, those skilled in the art usually determine the mid-arc of the blade first, and then determine the curves of the pressure surface ...

AI Technical Summary

Problems solved by technology

However, blades with a single-arc curve in the middle arc will result in lower working efficiency of the impeller (generally around 70%). In other words, blades with a single-arc curve in the middle arc will cause the impeller to convert mechanical energy into wind energy. less efficient

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