Air purification device and filter screen service life detection method and device
A technology of air purification equipment and detection methods, which is applied in the direction of measuring devices, chemical instruments and methods, separation methods, etc., and can solve problems such as inaccurate filter results
Active Publication Date: 2020-06-12
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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Problems solved by technology
[0005] The present invention provides an air purification device and its filter life detection method and detection device, which are used to solve the problem of using PWM duty ratio to determine the dirty filter in the prior art Degree Results Inaccurate Issues
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it may be mechanical connection; it may be direct connection or indirect connection through an intermediary, and it may be the internal communicatio...
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The invention discloses an air purification device and a filter screen service life detection method and device which relate to the technical field of filter screen filth blockage detection, and are used for solving the problem that a result of judging the filth blockage degree of a filter screen by adopting a PWM duty ratio is inaccurate. The filter screen service life detection method comprisesthe steps of when the use time of the filter screen is within the preset new machine time, obtaining a current indoor dust detection value at every preset time interval; if the plurality of current dust detection values in the initial first acquisition time are all in a second dust value range and the plurality of current dust detection values in the subsequent second acquisition time are all in the first dust value range, obtaining the current PWM duty ratio of a draught fan, and storing the current PWM duty ratio and covering the stored calibrated PWM duty ratio corresponding to the condition that the filter screen is not filth-blocked; and if the plurality of current dust detection values in the initial second acquisition time are all within the first dust value range, keeping the calibrated current PWM duty ratio corresponding to the condition that the stored filter screen is not subjected to filth blockage unchanged.
Description
technical field [0001] The invention relates to the technical field of detection of filter screen dirty blockage, in particular to an air purification device and a filter screen life detection method and detection device thereof. Background technique [0002] The principle of air purification is to inhale the polluted air in the room through the fan and filter the fine particles (dust PM2.5) in the air through the filter to become clean air and then blow it out into the room. As time goes by, the filter screen will accumulate more and more particulate matter, the filtration efficiency will become lower and lower, and it will eventually be scrapped. Therefore, real-time understanding of the dirt and blockage of the filter screen is conducive to timely replacement of the discarded filter screen to avoid secondary pollution. [0003] One of the methods for judging the dirty blockage of the existing filter screen is to determine the filter screen according to the relationship b...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01N15/08B01D46/00B01D46/44
CPCG01N15/08B01D46/00B01D46/442G01N2015/084Y02B30/70
Inventor 杨立峰
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD