a blower

Abstract

Disclosed is a blowing and suction machine with a function that the air speed of an air outlet can be changed. The blowing and suction machine comprises a machine body and a hollow air blowing pipe. Air blown out by the machine body passes through the air blowing pipe, the air outlet is formed in the other end of the air blowing pipe, and an adjusting assembly which is used for adjusting the air outlet area of the air outlet is arranged at the position of the air outlet. The adjusting assembly comprises a fixed shaft, air baffles, sliding pins and sliding grooves, wherein the two ends of the fixed shaft are fixed to the inner side wall of the air blowing pipe, one end of each air baffle is connected with the fixed shaft in a rotating mode, the sliding pins are fixed to the air baffles, the sliding grooves are formed in the circumferential side wall of the air blowing pipe, and the sliding pins penetrate through the sliding grooves and are arranged in the sliding grooves in a sliding mode. When the sliding pins slide in the sliding grooves, the air baffles can rotate around the fixed shaft, at least parts of the air baffles cover the air outlet, the covering area is changed along with rotation of the air baffles, a user only needs to adjust the rotation positions of the air baffles to enable the airflow density in the air outlet to be changed, and therefore the effect that the air speed of the air outlet is changed is achieved.

Description

technical field [0001] The invention relates to a blower, in particular to a blower capable of changing blowing speed conveniently. Background technique [0002] The blower is widely used in the fields of household electric tools and garden electric tools. Taking the field of garden electric tools as an example, when the blower is in the blowing state, it can effectively blow away light debris such as fallen leaves and reduce the user burden. However, in some humid and narrow areas, debris such as fallen leaves will not be blown away by the ordinary blowing speed, so it is necessary to increase the wind speed of the blower in the blowing state. Part of the blower in the prior art achieves the increase or decrease of the wind speed by changing the speed of the motor, but this is a waste of time and power; Next, the easiest way to increase the blowing speed is to reduce the cross-sectional area of ​​the blowing port, so that the airflow density passing through the unit area ...

AI Technical Summary

Problems solved by technology

Part of the blower in the prior art achieves the increase or decrease of the wind speed by changing the speed of the motor, but this is a waste of time and power; Next, the easiest way to increase the blowing speed is to reduce the cross-sectional area of ​​the blowing port, so that the airflow density passing through the unit area will increase, and the wind speed will also increase thereupon. Another part of the blowing machine in the prior art takes advantage of this , the blower is equipped with multiple detachable and installable blow pipes of different calibers, but due to too many accessories, it is not convenient for the blower that is often used outdoors

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