Blade-adjustable ventilating machine

Abstract

The invention discloses a blade-adjustable ventilating machine. The blade-adjustable ventilating machine comprises an air duct, a drive motor, an impeller and a plurality of supporting legs, wherein the supporting legs are uniformly distributed around the drive motor; one end of each supporting leg is fixed on the drive motor, and the other end of each supporting leg is fixed on a base plate of the air duct; the drive motor is arranged at the center of the air duct, and the axis of the drive motor coincides with that of the air dust; a plurality of grooves are formed in an output shaft of the drive motor; a plurality of convex blocks are formed on the side wall of a central hole of a central fixed block of the impeller; the output shaft is inserted and sleeved into the central hole of the central fixed block; the convex blocks are inserted and sleeved into the grooves; and the central fixed block is connected to the end part of the output shaft through a bolt. According to the blade-adjustable ventilating machine, the effect of air quantity adjusting can be achieved by directly adjusting the blade, the air quantity adjusting becomes simple and convenient, and an air quantity adjusting device does not need to be specifically designed or equipped on the ventilating machine, so that the cost is saved; and the impeller can be finely adjusted to rotate, thus meeting use requirements of different situations.

Description

Technical field: [0001] The invention relates to the technical field of ventilators, in particular to a ventilator with adjustable blades. Background technique: [0002] The blades on the impeller of the existing air-conditioning axial flow fan are generally fixed on the impeller hub, which cannot adjust the angle of the blade. Generally, it is an impeller, and the blade has only one angle, and the angle cannot be adjusted according to different air volume requirements in different environments. So as to meet the requirements of use; [0003] And some axial flow fans with the function of adjusting the blade angle are generally designed with an air volume adjustment device equipped with the axial flow fan, which increases the cost and the equipment is responsible. However, the blades on the impeller of some axial flow fans can be rotated to adjust the blade angle. The angle cannot meet the needs of specific places. Invention content: [0004] The purpose of the present i...

AI Technical Summary

Problems solved by technology

[0002] The blades on the impeller of the existing air-conditioning axial flow fan are generally fixed on the impeller hub, which cannot adjust the angle of the blade. Generally, it is an impeller, and the blade has only one angle, and the angle cannot be adjusted according to different air volume requirements in different environments. So as to meet the requirements of use;

[0003] However, some axial flow fans with the function of adjusting the blade angle are generally designed with an air volume adjustment device equipped with the axial flow fan, which increases the cost and the equipment is responsible.

However, the blades on the impeller of some axial flow fans can be rotated to adjust the blade angle. The angle cannot meet the needs of a specific site

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