A device for avoiding obstruction of the ventilation fan at the exhaust port of the fresh air fan of the air purification equipment

Abstract

A device for avoiding blockage of a ventilating fan at the exhaust outlet of a fresh fan of air purification equipment, which relates to the technical field of fresh fans, including a ventilating fan operating state control module and a ventilating fan power module starting, which is turned on by a ventilating fan switch, and the ventilating fan power module drives the ventilating fan to rotate forward; The operating state control module of the ventilating fan monitors the operating state of the ventilating fan and obtains its operation data; according to whether the ventilating fan is running normally, it determines whether the ventilating fan power module needs to reverse the ventilating fan and return to the original rotation origin. The ventilation fan of the fresh fan of the air purification equipment encounters obstruction and avoids the advantages of automatically avoiding the shutdown alarm when encountering obstructions. It can automatically shut down when encountering obstacles and cannot continue to rotate. The self-ignition problem caused by the continued rotation of the motor after the blockage improves the safety of fresh air fans and ventilation fans when they are used, and is more in line with the safety requirements of modern electrical appliances.

Description

technical field [0001] The invention relates to the technical field of fresh air fans, in particular to a device for avoiding blockage of a ventilation fan at an air exhaust port of a fresh air fan of air purification equipment. Background technique [0002] The fresh air fan is mainly used for indoor air purification, promotes indoor air circulation, and exchanges fresh air from outside with indoor air after disinfection and filtration to ensure clean indoor air. Fresh air fans generally need to be used in conjunction with exhaust outlets and ventilation fans to improve ventilation efficiency. [0003] Ventilation fans in the prior art are mostly equipped with exhaust pipes and fan blades outside. To ensure their ventilation and ventilation performance, they are generally placed in the open air. During use, debris may enter the exhaust fan and cause damage to the rotation of the exhaust fan. hinder. In addition, the exhaust fan is generally installed at a high place, and ...

AI Technical Summary

Problems solved by technology

[0003] Ventilation fans in the prior art are mostly equipped with exhaust pipes and fan blades outside. To ensure their ventilation and ventilation performance, they are generally placed in the open air. During use, debris may enter the exhaust fan and cause damage to the rotation of the exhaust fan. hinder

In addition, the exhaust fan is generally installed at a high place, and it cannot be found in time after the obstruction caused by debris. At this time, the ventilation fan is still working, the fan blades cannot rotate, but the motor is still in the standby state, which can easily cause the internal temperature to rise and cause spontaneous combustion.

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