Air resistance recognition method for fresh air purification system and device thereof

The invention relates to an air resistance recognition method for a fresh air purification system and a device thereof. A motor driver of a fan recognizes the parameter change of the power input power, the output phase voltage, the output current and the rotation speed of a motor caused by the air r...

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Bibliographische Detailangaben
Hauptverfasser:	Wu Zeming, Xue Wenzhu, Teng Chao
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BLASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION HEATING LIGHTING MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MECHANICAL ENGINEERING PHYSICS RANGES TARIFF METERING APPARATUS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to an air resistance recognition method for a fresh air purification system and a device thereof. A motor driver of a fan recognizes the parameter change of the power input power, the output phase voltage, the output current and the rotation speed of a motor caused by the air resistance change of a filter net and calculates the recognized parameter values; the calculation result is compared with the set air resistance warning parameter, and the comparison result is sent to a controller; the controller sends air resistance warning signals for reminding users to replace or wash the filter net. According to the method and the device thereof, the change of the air resistance of a mechanical ventilation system and an air purification system can be calculated online by observing the change comparison of the parameters of the fan motor in the operation state in real time, the system operating state can be learnt in time, the system operating efficiency can be improved, and the system maintainin