A hysteresis control method and device of an air purifier and the air purifier

Abstract

The present application relates to the technical field of air purification, and discloses a hysteresis control method and device for an air purifier and the air purifier, the method comprising: obtaining an environmental parameter and an air quality value; calculating the width of a hysteresis interval according to the influence of the environmental parameter on the air purifier wind speed false triggering, and determining a first threshold upper boundary and a second threshold lower boundary of the hysteresis interval based on the width of the hysteresis interval and the air quality value, the first threshold upper boundary being used to represent a threshold boundary of poor air quality, and the second threshold lower boundary being used to represent a threshold boundary of better air quality; controlling the speed of the fan according to the comparison results of the air quality value with the first threshold upper boundary and the second threshold lower boundary respectively.The present application adjusts the hysteresis interval adaptively through the environmental parameter, avoids the frequent start-stop of the fan near the threshold, reduces the number of invalid switching and power loss, has an energy-saving effect, and belongs to the technical field of high-efficiency energy-saving industry.

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