Fan

Abstract

The invention discloses a fan. The fan comprises a supporting frame, a volute, a connecting shaft, an impeller set and a transmission part, wherein the volute is connected to the supporting frame, theinterior of the volute is hollow, and the volute is provided with an air inlet and an air outlet; the connecting shaft is connected to the supporting frame, and at least part of the connecting shaftextends into the volute; the impeller set is used for driving air in the volute to be sent out from the air outlet during rotation and comprises an impeller base and blades connected to the outer periphery of the impeller base, and the part, extending into the volute, of the connecting shaft is rotationally sleeved with the impeller base; and the transmission part is used for being connected witha driving mechanism to obtain rotation power and connected with the impeller base to transmit torque. According to the impeller set, the driving mechanism connected with the transmission part does notneed to bear the gravity load of the impeller set, the service life of the driving mechanism is prolonged, the stability of the fan is improved, and rotation shaking caused by deformation is reduced.

Description

technical field [0001] The invention relates to the field of fans, in particular to a fan. Background technique [0002] Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induction of boilers and industrial furnaces; cooling and cooling of air conditioning equipment and household electrical appliances Ventilation; drying and selection of grain; wind tunnel wind source and inflation and propulsion of hovercraft, etc. [0003] Usually, the output shaft of the driving mechanism (motor) of the fan drives the impeller group of the fan to rotate, but usually the weight of the impeller group is transferred to the output shaft of the driving mechanism (motor), so that the output shaft of the driving mechanism (motor) not only needs to output The torque also bears radial loads. Long-term use will cause radial deformation of the output shaft, resulting in rotational deflection and...

AI Technical Summary

Problems solved by technology

[0003] Usually, the output shaft of the driving mechanism (motor) of the fan drives the impeller group of the fan to rotate, but usually the weight of the impeller group is transferred to the output shaft of the driving mechanism (motor), so that the output shaft of the driving mechanism (motor) not only needs to output The torque also bears the radial load. Long-term use will cause radial deformation of the output shaft, resulting in rotation deflection and shaking, which seriously affects the life of the motor.

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