Large air quantity turbine axial-flow type lithium battery blower

Abstract

A large air quantity turbine axial-flow type lithium battery blower increases the air quantity and reduces the noise; an impeller fan is connected with a large air quantity turbine in series and has angle change, a variable cross-section air pipe has a variable cross-section, at least three parts of the variable cross-section air pipe are expanded and three parts of the variable cross-section airpipe are reduced and are bent, so that main noise is prevented from being directly transmitted; multiple levels of function muffler pipes are arranged internally, are connected in series at intervals,and are axially arranged along a descending curve of odd functions of a plurality of approximate similar finite sine wave rows; the lengths of the muffler pipes are shortened successively, the pipe diameters of the muffler pipes are reduced, and the muffler pipes are provided with a plurality of fish scale wedges with arc-shaped small narrow openings and wedges with through holes; smalls pipes ofauxiliary muffling pipes which are auxiliary and branched on the function muffling pipes are provided with the wedges with the through holes, so that a plurality of paths are provided for airflow andthe airflow is prevented from being totally mixed in a main pipe, in order to achieve a muffling effect of a multi-stage muffling process that the airflow is compressed and then expanded, and although the path loss exists, the muffling effect is obvious.

Description

technical field [0001] The invention relates to a portable electric tool for blowing and sucking leaves in places such as flower beds, gardens, parks and roadsides, especially an improvement of a low-vibration leaf blowing and sucking machine, including the addition of a movable auxiliary handle and a dust bag holder And the improvement of the tie mouth, the dust outlet of the main body shell is added with a soft piece, the blowing impeller is added with a blade, the circuit is added with an insurance and a double switch, and the inside and outside of the blower and suction machine are equipped with sound-absorbing and vibration-reducing materials and honeycombs, and the rollers are changed to steerable. And on the basis of the low-vibration leaf blower with equal logarithmic spiral safety door at the pressure angle, the improved large air volume turbo axial flow lithium electric blower can be used for blowing leaves and snow with large air volume. Background technique [00...

AI Technical Summary

Problems solved by technology

The stator part of the outer rotor motor of the ordinary brushless motor that is usually used for blower or leaf blower is outside the motor. The stator is large and the lower slot of the stator winding is large, which does not meet the expectation of light weight and high output; especially its The rotor part with windings has to protrude a very long and thin motor output shaft, and the connection between the motor and the impeller fan can only be realized on the long extension line outside the axial direction of the motor, which causes a fatal problem Problem, the output shaft between the motor and the impeller fan forms a material mechanics cantilever beam structure, the length of the output shaft between the motor end and the center of the impeller fan is the moment arm, the radial centrifugal force on the impeller fan This force arm and the bias force form a large harmful bias moment, which consumes a large amount of motor output, unnecessarily increases the deflection of the shaft and the moment of inertia, and restricts the high-speed strength of the blower or leaf blower. out of the wind

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