Method and device for measuring service life of purifier filter screen based on working current of direct-current motor

Abstract

The invention discloses a method and device for measuring the service life of a purifier filter screen based on the working current of a direct-current motor. The method comprises the steps of S1 acquiring the working current value of the direct-current motor of an air purifier in the working running state in real time; S2 comparing the obtained working current value with a preset working currentthreshold value; and S3 when the working current value is continuously lower than the preset working current threshold value and reaches a preset condition, generating a feedback instruction and outputting the feedback instruction. In combination with the method, the device provided by the invention has the advantages of low cost, simple process and easiness in implementation, and the device and the method are combined for combined application. According to the scheme, the problems that in the prior art, several existing filter screen service life calculation and prompting methods such as timing, colorimetry and pressure difference measurement are adopted, and consequently the accuracy is low or the cost is too high can be solved with lower cost and more accurate effects.

Description

technical field [0001] The invention relates to the field of life monitoring of air purifier consumables, in particular to a method and a device for measuring and calculating the life of a filter screen of a purifier based on the working current of a DC motor. Background technique [0002] The air purifier is a kind of AC motor or DC motor to drive the wind wheel to rotate, so that the indoor air flows in the artificial air duct of the purifier, and is forced to pass through the filter devices such as high-efficiency filter material HEPA, activated carbon, and ultraviolet lamp germicidal lamp. Dust, soot, various particles, toxic and harmful gases, bacteria and other harmful substances in the air are adsorbed on the surface of the filter, decomposing toxic and harmful gases, killing bacteria, so as to achieve the effect of purifying the air. An air purification device. [0003] The reason why the air purifier can purify the air mainly depends on the filtering effect of the f...

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Problems solved by technology

[0018] Aiming at the problems of inaccuracy or high cost in several existing filter life calculation and prompt methods such as timing, colorimetry, and differential pressure measurement in the prior art, the purpose of the present invention is to propose a low-cost, easy-to-calculate Accurate, convenient and flexible method and device for calculating the life of purifier filter screen based on DC motor working current

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