Air blower

Abstract

The invention provides an air blower which comprises a shell, a motor, an axial fan, an air blowing pipe and a duct, wherein an air inlet is formed in the shell; air enters from the air inlet; the motor is located in the shell; the axial fan is driven by the motor to rotate to generate an air flow; the axial fan comprises matched and connected with the motor and a plurality of blades mounted on the hub; the air blowing pipe is connected with the shell and is provided with an air outlet; the air flow is blown out of the air outlet; the duct is used for guiding the air flow to move toward the air outlet; the diameter of the axial fan is less than 88mm; the rotating speed of the motor is more than 21000rpm. Compared with the prior art, the air blower provided by the invention has the advantages that the small-diameter fan is driven at a high rotating speed, the power consumption is low, the higher air-blowing efficiency is acquired, the heavier leaves on the lawn and the leaves located in the gaps can be conveniently blown.

Description

technical field [0001] The invention relates to an electric tool, especially a hair dryer. Background technique [0002] Along with the continuous expansion of urban green area, green belts in parks, highways, and public places are all over the country, and lawn trimming tools are also widely used, and hair dryers are just one of them. [0003] In current hair dryers using axial flow fans, the motor is arranged outside the duct in order to improve the efficiency of guiding the airflow. In this new type of blower, the design parameters such as the overall size of the axial flow fan, the proportional arrangement of the fan hub and the fan as a whole, and the setting of the motor speed have not fully considered the combination of blowing efficiency and power consumption, resulting in The wind speed and air volume of the whole machine are small, and the blowing efficiency is low. It is difficult to blow the heavy leaves falling on the lawn and the leaves in the cracks, etc. or ...

AI Technical Summary

Problems solved by technology

In this new type of blower, the design parameters such as the overall size of the axial flow fan, the proportional arrangement of the fan hub and the fan as a whole, and the setting of the motor speed have not fully considered the combination of blowing efficiency and power consumption, resulting in The wind speed and air volume of the whole machine are small, and the blowing efficiency is low. It is difficult to blow the heavy leaves falling on the lawn and the leaves in the cracks, etc. or the blowing efficiency of the whole machine is guaranteed, but the power consumption is too high. When the battery pack is powered, the hair dryer can maintain a shorter working time

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