Motor fan device, air flowability adjusting equipment and air capacity control method

Abstract

The invention discloses a motor fan device, air flowability adjusting equipment and an air capacity control method. The motor fan device comprises a motor, a processor, a storage device for storing alookup table and a speed detection unit. The processor obtains the target driving voltage and the corresponding target rotating speed of the motor by inquiring the lookup table or carrying out calculation based on data in the lookup table according to the preset air capacity. When the rotating speed difference between the practical rotating speed and the target rotating speed of the motor is not within a preset rotating speed difference range, a gain value is repeatedly increased to the target driving voltage to obtain the new target driving voltage, the target rotating speed corresponding tothe new target driving voltage and the practical rotating speed of the motor are obtained, whether the rotating speed difference between the practical rotating speed and the target rotating speed is within the preset rotating speed difference range or not is judged, the operations are carried out till the rotating speed difference is within the preset rotating speed difference range, and the corresponding target rotating speed at the movement is kept to drive the motor. An air flowability adjusting system can output the constant air capacity.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a BLDC motor fan device. Background technique [0002] Ventilation, air conditioning and other systems are usually driven by fan motors to adjust air flow. When the static pressure of the system changes due to changes such as external wind pressure and pipeline conditions, or the internal devices of the system, such as the dust accumulation in the air filter, especially the oil stains on the filter of the range hood after long-term operation, it increases The static pressure of the system reduces the air output, resulting in poor indoor air quality, especially the increase in carbon monoxide will endanger the health of users in the kitchen (such as a gas stove). The present invention aims to provide a technical solution that enables the system to output a constant air volume even when the static pressure changes. Contents of the invention [0003] An embodiment of one aspect o...

AI Technical Summary

Problems solved by technology

When the static pressure of the system changes due to changes such as external wind pressure and pipeline conditions, or the internal devices of the system, such as the dust accumulation in the air filter, especially the oil stains on the filter of the range hood after long-term operation, it increases The static pressure of the system reduces the air output, resulting in poor indoor air quality, especially the increase in carbon monoxide will endanger the health of users in the kitchen (such as a gas stove)

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