Blade structure with adjustable blade inclination angle and axial flow fan

Abstract

The invention provides a blade structure with an adjustable blade inclination angle and an axial flow fan. The blade structure is arranged on a rotating shaft and comprises a blade structure and blades, wherein the blade structure has an adjusting state for adjusting the inclination angle of the blades and a relatively static state to the blades. According to the blade structure with the adjustable blade inclination angle and the axial flow fan, the inclination angle of the blades is adjusted by utilizing the blade structure, so that static pressure generated at the blades is changed, the adjustment of air amount is realized at last, the inclination angle of the blades can be directly adjusted by utilizing a rotating shaft by bevel gears which are engaged with each other, the accuracy of adjustment and the control accuracy of the air amount are increased, stepless adjustment of the blade inclination angle is realized, the controllability and reliability in adjustment are realized by utilizing a ratchet and a pawl, the adjustment process is simplified, all of the blades can be adjusted at the same time by an adjusting disk, the air amount control range is expanded, the universalityof the fan is increased, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of fan structures, in particular to a fan blade structure and an axial flow fan with an adjustable fan blade inclination angle. Background technique [0002] Existing air-conditioning external units generally use axial flow fans as condenser heat dissipation equipment, and the axial flow fans discharge air outwards so that the air passes through the fins of the condenser and takes away heat to achieve a heat exchange effect. Due to the different ambient temperature and cooling requirements, the air volume of the axial fan also needs to be changed. However, the shape and inclination angle of the fan blades are fixed, and the air volume of the axial flow fan cannot be used universally for different working conditions and different specifications of air conditioner external units. If it is necessary to manufacture fan blades that match different working conditions, frequent mold opening is required, which great...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem in the prior art that the shape and inclination angle of the fan blades are fixed and cannot be used universally, a fan blade structure and an axial flow fan with an adjustable fan blade inclination angle that can adjust the air volume according to the working conditions and specification requirements are provided.

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