CN111617561B - Filtering device replacement, cleaning and detection method based on equipment parameter detection - Google Patents
Filtering device replacement, cleaning and detection method based on equipment parameter detection Download PDFInfo
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- CN111617561B CN111617561B CN201910148127.0A CN201910148127A CN111617561B CN 111617561 B CN111617561 B CN 111617561B CN 201910148127 A CN201910148127 A CN 201910148127A CN 111617561 B CN111617561 B CN 111617561B
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Abstract
The invention relates to a method for replacing, cleaning and detecting a filtering device based on equipment parameter detection, which is characterized in that before equipment leaves a factory, the altitude which is a factor influencing the filtering effect of the filtering device is fitted with the filtering effect of the filtering device and the equipment parameter to obtain the fitted functional relationship among the three; once the equipment is installed and used after leaving the factory, obtaining an altitude value of the area where the equipment is located according to the fitted functional relationship model, the initial value of the equipment parameter and the initial value of the filtering effect of the filtering device, and obtaining the real-time value of the filtering effect of the filtering device in the equipment by processing the functional relationship model according to the obtained real-time value of the equipment parameter; once the real-time value of the filtering effect of the filtering device is judged to be smaller than or equal to the critical value of the filtering effect, the filtering effect of the filtering device is reduced, the filtering device is started to replace or clean, and therefore the fact that the filtering device is accurately replaced and cleaned according to the actual filtering effect of the filtering device is really achieved.
Description
Technical Field
The invention relates to the field of filtering devices, in particular to a filtering device replacement, cleaning and detection method based on equipment parameter detection.
Background
In the current equipment with a filtering device, such as a range hood and an air purifier, along with the operation of the equipment, the filtering device (mainly a filtering net) in the equipment can cover a large amount of impurities, such as oil smoke or dust particles, due to long-term operation. In order to remove these impurities covering the filter device in a timely manner, the filter device needs to be cleaned or replaced.
In order to ensure timely cleaning or replacement of the filtering device in the equipment, the method is mainly realized by timing the accumulated working time of the fan in the equipment. That is, an accumulated time threshold value representing that the filtering device needs to be cleaned/replaced is set when the equipment leaves the factory, and once the accumulated running time of the fan reaches the accumulated time threshold value, a user is reminded to perform cleaning treatment or replacement treatment on the filtering device in the equipment as soon as possible.
However, this method of detecting whether the filter device needs to be replaced or cleaned does not take into consideration the effect of the altitude on the operating state of the motor in the device. This is because the atmospheric pressure value in the area is different due to different altitudes, and the main function of the fan in the device is to discharge the air in the volute of the device out of the cavity by the operation of the motor. Because a negative pressure area is formed between the air inlet of the equipment and the fan, when the atmospheric pressure value of the area where the equipment is located is different, the motor can discharge the air with the same volume to the outside of the cavity of the equipment with different work required to be done under the condition that the filtering device can reach the same unobstructed degree. Of course, when the equipment works in different altitude areas, the impurity amount filtered by the motor running in the same gear for the same time is also different. Therefore, setting the accumulated time threshold to expect detection of filter replacement in the device is not accurate enough, and may also affect the user experience.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for detecting the replacement, cleaning and cleaning of a filtering device based on equipment parameter detection in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a filter device replacement, cleaning and detection method based on equipment parameter detection is used for equipment with a fan, a smoke channel and a filter device, a negative pressure area is formed between an air inlet of the equipment and the fan, and the method is characterized by comprising the following steps of 1-6:
step 1, before the equipment leaves a factory, fitting to obtain the altitude of an area where the equipment is located, a filtering effect value of a filtering device and a functional relation model among equipment parameters; the altitude of the area where the equipment is located is marked as H, the filtering effect value of the filtering device is marked as eta, and the equipment parameter is marked as theta; the functional relationship model is as follows:
H＝f(η,θ)；
step 2, obtaining a critical value of the filtering effect of the filtering device; wherein the filtering effect threshold is marked as etaBoundary of China；
Step 3, when the equipment works by using the new filtering device for the first time, acquiring the initial value of the equipment parameter of the equipment and the initial value of the filtering effect of the filtering device, and acquiring the altitude value of the area where the equipment is located; the altitude of the area where the equipment is located is marked as h, and the initial value of the equipment parameter of the equipment is marked as thetaInitialInitial value eta of the filtering effect of the filtering deviceInitial，h＝f(ηInitial,θInitial)；
Step 4, acquiring the real-time value of the equipment parameter when the equipment works in real time; wherein the real-time value of the device parameter is marked as thetat，t≥0；
Step 5, obtaining a filtering effect real-time value of the filtering device in the equipment according to the obtained functional relation model and the obtained equipment parameter real-time value; wherein the filtering effect real-time value of the filtering device is marked as etat：
step 6, when the equipment judges that the real-time value of the filtering effect of the filtering device is smaller than or equal to the critical value of the filtering effect, starting a filtering device replacement or cleaning prompt; otherwise, go to step 4.
Further, in the method for detecting replacement and cleaning of a filtering apparatus based on equipment parameter detection, the step 2 of obtaining the filtering effect threshold value includes the following steps S1 to S3:
step S1, continuously acquiring the filtering effect value of the filtering device in real time;
step S2, calculating the filtering effect difference between the continuously obtained next filtering effect value and the previous filtering effect value;
step S3, when it is detected that the filtering effect difference is greater than the preset threshold, the filtering effect value of the next time corresponding to the filtering effect difference is calculated as the filtering effect critical value of the filtering apparatus.
In the method for detecting replacement, cleaning and detection of the filtering device based on equipment parameter detection, the equipment parameter is the motor current of the fan; or the equipment parameter is a negative pressure value of the negative pressure area.
In the method for detecting replacement, cleaning and detection of the filtering device based on equipment parameter detection, the equipment is a range hood, and the filtering effect value is grease separation degree or odor reduction degree.
In the method for detecting replacement, cleaning and detection of the filtering device based on equipment parameter detection, the equipment is an air purifier or an indoor air conditioner or a vehicle-mounted air conditioner, and the filtering effect value is formaldehyde purification efficiency or inhalable particle purification efficiency.
Compared with the prior art, the invention has the advantages that:
firstly, the method for replacing, cleaning and detecting the filtering device fully considers the equipment parameter condition (such as the actual atmospheric pressure condition or the motor current of a fan) of the equipment adapted to the method when the equipment is used in different altitude areas, and the altitude, which is a factor influencing the filtering effect of the filtering device, is fitted with the filtering effect of the filtering device and the equipment parameter before the equipment leaves a factory, so that the fitted functional relationship among the three is obtained; once the equipment is installed and used after leaving the factory, obtaining an altitude value of the area where the equipment is located according to the fitted functional relationship model, the initial value of the equipment parameter and the initial value of the filtering effect of the filtering device, and obtaining the real-time value of the filtering effect of the filtering device in the equipment by processing the functional relationship model according to the obtained real-time value of the equipment parameter; once the real-time value of the filtering effect of the filtering device is judged to be smaller than or equal to the critical value of the filtering effect, the filtering effect of the filtering device is reduced, and then the replacement or cleaning reminding of the filtering device is started, so that the processing judgment is really carried out according to the actual filtering effect of the filtering device, and the replacement or cleaning reminding is timely and accurately carried out;
secondly, the method for detecting the replacement and cleaning of the filtering device does not need to consider the use habits of the user in the working process of the equipment, for example, the eating and cooking habits of the user on using the range hood, thereby avoiding the adverse effect on the replacement and detection accuracy of the filtering device caused by the different use habits of the user on the equipment;
finally, in the method for detecting the replacement, cleaning and replacement of the filtering device, the critical value of the filtering effect of the filtering device can be set according to the requirement, so that the method for detecting the replacement of the filtering device can be applied to equipment with different fan structures and motor performances, and further can be applied to an internal circulation type range hood with the filtering device and different fan systems.
Drawings
FIG. 1 is a schematic flow chart of a method for detecting replacement, cleaning and cleaning of a filter device based on equipment parameter detection according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
The present embodiment takes a range hood as an example, and provides a method for detecting replacement, cleaning and detection of a filtering device based on equipment parameters. The range hood is provided with a fan, a smoke channel and a filtering device, and a negative pressure area is formed between an air inlet of the range hood and the fan. The plant parameter in this embodiment is denoted as θ, and the plant parameter θ is selected as the motor current of the fan. Specifically, the method for detecting the replacement and cleaning of the filtering device comprises the following steps 1 to 6:
step 1, before the range hood leaves a factory, fitting to obtain a functional relation model among the altitude of the area where the range hood is located, the filtering effect of a filtering device and the motor current; the altitude of the area where the range hood is located is marked as H, the filtering effect of a filtering device in the range hood is marked as eta, and the motor current is marked as I; the fitted functional relationship model is as follows:
H＝f(η,I)；
step 2, obtaining the filtered air of the filtering deviceCritical value of filtering effect; wherein the filtering effect threshold value is marked as etaBoundary of China(ii) a Specifically, in the present embodiment, the obtaining of the filtering effect threshold value includes the following steps S1 to S3:
step S1, continuously acquiring the filtering effect value of the filtering device in real time; for the range hood in the embodiment, the filtering effect value can be set as the grease separation degree or the odor reduction degree according to the requirement;
step S2, calculating the filtering effect difference between the continuously obtained next filtering effect value and the previous filtering effect value;
step S3, when the difference value of the filtering effect is detected to be larger than the preset threshold value, it is indicated that the filtering effect of the filtering device starts to be obviously reduced, namely the filtering device at the moment is covered by more oil smoke, and the corresponding next filtering effect value when the difference value of the filtering effect is calculated is taken as the critical value of the filtering effect of the filtering device;
step 3, when the range hood works by using a new filtering device for the first time, acquiring an initial value of the current of a motor of the range hood and an initial value of the filtering effect of the filtering device, and acquiring a height value of the altitude of the area where the range hood is located; the altitude of the area where the range hood is located is marked as h, and the initial value of the motor current of the equipment is marked as IInitialInitial value eta of the filtering effect of the filtering deviceInitialThe value of the altitude h is obtained according to the fitted functional relation model, namely h ═ f (η)Initial,IInitial) (ii) a Wherein, when the new filter device is used for the first time, the initial value eta of the filter effect isInitialClose to 100%;
step 4, acquiring a real-time value of the current of the motor of the range hood during working in real time; wherein the real-time value of the motor current is marked as ItT is more than or equal to 0; that is, in the process of absorbing oil smoke, the real-time value of the motor current in the oil smoke absorption device is obtained;
step 5, obtaining a filtering effect real-time value of the filtering device in the range hood according to the obtained functional relation model and the obtained motor current real-time value; wherein, filteringThe filter effect real-time value of the device is marked as etat：
step 6, when the real-time value of the filtering effect of the range hood is judged to be less than or equal to the critical value of the filtering effect, namely eta ist≤ηCritical point ofWhen the filter effect of the filter device is reduced, starting a filter device replacement or cleaning prompt; otherwise, if the filtering effect of the filtering device is not reduced, the step 4 is carried out.
Of course, the method for detecting replacement, cleaning and detection of the filtering device in the embodiment can be applied to the range hood, and also can be applied to an air purifier, an indoor air conditioner or a vehicle-mounted air conditioner. When the filter device replacement cleaning detection method is applied to an air purifier or an indoor air conditioner or a vehicle-mounted air conditioner or a dust collector, the filter effect value of the filter device is correspondingly set as the formaldehyde purification efficiency or the inhalable particulate matter purification efficiency.
Example two
Still taking the range hood as an example, the second embodiment provides another method for detecting the replacement, cleaning and detection of the filtering device based on the equipment parameters. The range hood is provided with a fan, a smoke channel and a filtering device, and a negative pressure area is formed between an air inlet of the range hood and the fan. The device parameter in this embodiment is marked as θ, and the device parameter θ is selected as the negative pressure value of the negative pressure region. Specifically, the method for detecting the replacement and cleaning of the filtering device comprises the following steps 1 to 6:
step 1, before the range hood leaves a factory, fitting to obtain a functional relation model among the altitude of an area where the range hood is located, the filtering effect of a filtering device and the negative pressure value of a negative pressure area; the altitude of the area where the range hood is located is marked as H, the filtering effect of a filtering device in the range hood is marked as eta, and the negative pressure value of a negative pressure area is marked as P; the fitted functional relationship model is as follows:
H＝f(η,P)；
step 2, obtaining a critical value of the filtering effect of the filtering device; wherein the filtering effect threshold value is marked as etaBoundary of China(ii) a Specifically, in the present embodiment, the obtaining of the filtering effect threshold value includes the following steps S1 to S3:
step S1, continuously acquiring the filtering effect value of the filtering device in real time; for the range hood in the embodiment, the filtering effect value can be set as the grease separation degree or the odor reduction degree according to the requirement;
step S2, calculating the filtering effect difference between the continuously obtained next filtering effect value and the previous filtering effect value;
step S3, when the difference value of the filtering effect is detected to be larger than the preset threshold value, it is indicated that the filtering effect of the filtering device starts to be obviously reduced, namely the filtering device at the moment is covered by more oil smoke, and the corresponding next filtering effect value when the difference value of the filtering effect is calculated is taken as the critical value of the filtering effect of the filtering device;
step 3, when the range hood works for the first time by using a new filtering device, acquiring a negative pressure initial value of a negative pressure area of the range hood and a filtering effect initial value of the filtering device, and acquiring a height value of the altitude of the area where the range hood is located; wherein the altitude of the area where the range hood is located is marked as h, and the initial value of the negative pressure area of the equipment is marked as PInitialInitial value eta of the filtering effect of the filtering deviceInitialThe value of the altitude h is obtained according to the fitted functional relation model, namely h ═ f (η)Initial,PInitial) (ii) a Wherein, when the new filter device is used for the first time, the initial value eta of the filter effect isInitialClose to 100%;
step 4, acquiring a real-time negative pressure value of the negative pressure area of the range hood during working in real time; wherein the real-time negative pressure value of the negative pressure zone is marked as PtT is more than or equal to 0; that is, during the process of sucking the oil smoke, the real-time value of the negative pressure area is obtained;
step 5, according to the obtained letterObtaining a real-time value of the filtering effect of the filtering device in the range hood by using the numerical relation model and the obtained real-time value of the negative pressure area; wherein the filtering effect real-time value of the filtering device is marked as etat：
step 6, when the real-time value of the filtering effect of the range hood is judged to be less than or equal to the critical value of the filtering effect, namely eta ist≤ηCritical point ofWhen the filter effect of the filter device is reduced, starting a filter device replacement or cleaning prompt; otherwise, if the filtering effect of the filtering device is not reduced, the step 4 is carried out.
Claims (5)
1. A filter device replacement, cleaning and detection method based on equipment parameter detection is used for equipment with a fan, a smoke channel and a filter device, a negative pressure area is formed between an air inlet of the equipment and the fan, and the method is characterized by comprising the following steps of 1-6:
step 1, before the equipment leaves a factory, fitting to obtain the altitude of an area where the equipment is located, a filtering effect value of a filtering device and a functional relation model among equipment parameters; the altitude of the area where the equipment is located is marked as H, the filtering effect value of the filtering device is marked as eta, and the equipment parameter is marked as theta; the functional relationship model is as follows:
H＝f(η,θ)；
step 2, obtaining a critical value of the filtering effect of the filtering device; wherein the filtering effect threshold is marked as etaBoundary of China；
Step 3, when the equipment works by using the new filtering device for the first time, acquiring the initial value of the equipment parameter of the equipment and the initial value of the filtering effect of the filtering device, and acquiring the altitude value of the area where the equipment is located;the altitude of the area where the equipment is located is marked as h, and the initial value of the equipment parameter of the equipment is marked as thetaInitialInitial value eta of the filtering effect of the filtering deviceInitial，h＝f(ηInitial,θInitial)；
Step 4, acquiring the real-time value of the equipment parameter when the equipment works in real time; wherein the real-time value of the device parameter is marked as thetat，t≥0；
Step 5, obtaining a filtering effect real-time value of the filtering device in the equipment according to the obtained functional relation model and the obtained equipment parameter real-time value; wherein the filtering effect real-time value of the filtering device is marked as etat：
step 6, when the equipment judges that the real-time value of the filtering effect of the filtering device is smaller than or equal to the critical value of the filtering effect, starting a filtering device replacement or cleaning prompt; otherwise, go to step 4.
2. The method for detecting replacement and cleaning of a filtering device based on equipment parameter detection as claimed in claim 1, wherein the obtaining of the filtering effect threshold value in step 2 comprises the following steps S1-S3:
step S1, continuously acquiring the filtering effect value of the filtering device in real time;
step S2, calculating the filtering effect difference between the continuously obtained next filtering effect value and the previous filtering effect value;
step S3, when it is detected that the filtering effect difference is greater than the preset threshold, the filtering effect value of the next time corresponding to the filtering effect difference is calculated as the filtering effect critical value of the filtering apparatus.
3. The method for detecting replacement and cleaning of a filtering device based on equipment parameter detection according to claim 1 or 2, wherein the equipment parameter is a motor current of a fan; or the equipment parameter is a negative pressure value of the negative pressure area.
4. The method as claimed in claim 3, wherein the device is a range hood, and the filtering effect value is a degree of grease separation or a degree of odor reduction.
5. The method for detecting replacement and cleaning of the filtering device based on equipment parameter detection according to claim 3, wherein the equipment is an air purifier or an indoor air conditioner or a vehicle-mounted air conditioner, and the filtering effect value is formaldehyde purification efficiency or inhalable particle purification efficiency.
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| CN207545984U (en) * | 2017-12-06 | 2018-06-29 | 宁波方太厨具有限公司 | A kind of filter element life instruction device |
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| AU2008242596C1 (en) * | 2007-04-20 | 2012-11-15 | Ventec Life Systems, Inc. | Product gas concentrator and method associated therewith |
| JP5235229B2 (en) * | 2011-07-04 | 2013-07-10 | 株式会社小松製作所 | Particulate removal filter regeneration control device and regeneration control method therefor |
| US9067848B2 (en) * | 2012-10-19 | 2015-06-30 | California Institute Of Technology | Nanostructured carbon materials for adsorption of methane and other gases |
| CN105424105B (en) * | 2015-11-06 | 2018-07-31 | 湖南核三力技术工程有限公司 | Dust pelletizing system is responsible for air volume detecting method and on-line measuring device |
| CN105800706A (en) * | 2016-05-10 | 2016-07-27 | 浙江钛合工程技术有限公司 | Harmless decomposition method for chlorine absorption product NaClO |
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| CN207545984U (en) * | 2017-12-06 | 2018-06-29 | 宁波方太厨具有限公司 | A kind of filter element life instruction device |
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