阅读说明：本技术 一种基于设备参数检测的过滤装置更换清洗检测方法 (Filtering device replacement, cleaning and detection method based on equipment parameter detection ) 是由 吴玲嫣 章珏瑞 魏碧荣 蔡帆 于 2019-02-28 设计创作，主要内容包括：本发明涉及一种基于设备参数检测的过滤装置更换清洗检测方法,在设备出厂前就将海拔这一影响过滤装置过滤效果的因素与过滤装置的通畅程度以及设备参数三者关系做拟合,以得到三者之间拟合后的函数关系；一旦该设备出厂后被安装使用,就根据拟合的函数关系模型、设备参数初始值以及该过滤装置的通畅程度初始值,得到该设备所处地区海拔高度值,并且根据获取到的设备参数实时值,通过处理函数关系模型,得到该设备内过滤装置的通畅程度实时值；一旦判断过滤装置的通畅程度实时值小于或者等于通畅程度临界值时,说明过滤装置的过滤效果出现下降,启动过滤装置更换或清洗提醒,从而真正做到了根据过滤装置实际通畅程度准确地进行更换清洗提醒。(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 unobstructed degree of the filtering device and the equipment parameter to obtain the fitted functional relation between the three; once the equipment is installed and used after leaving the factory, obtaining an altitude value of an 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 patency degree of the filtering device, and obtaining the real-time value of the patency degree of the filtering device in the equipment by processing the functional relationship model according to the obtained real-time value of the equipment parameter; in case judge when filter equipment's unobstructed degree real-time value is less than or equal to unobstructed degree critical value, explain that filter equipment's filter effect appears descending, start filter equipment and change or wash and remind to really accomplished to change accurately according to filter equipment actual unobstructed degree and wash and remind.)

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 a functional relation model among the altitude height of an area where the equipment is located, the unobstructed degree of a filtering device and the equipment parameters; the altitude of the area where the equipment is located is marked as H, the unobstructed degree 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 clear degree critical value of the filtering device, wherein the clear degree critical value is marked as η_{Boundary of China}；

Step 3, when the equipment works by using the new filtering device for the first time, obtaining the initial value of the equipment parameter of the equipment and the initial value of the unobstructed degree of the filtering device, and obtaining 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 theta_InitialInitial value of degree of patency η of the filter device_Initial，h＝f(η_Initial,θ_Initial)；

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 theta_t，t≥0；

And 5, obtaining a real-time value of the patency degree of the filtering device in the equipment according to the obtained functional relation model and the obtained real-time value of the equipment parameter, wherein the real-time value of the patency degree of the filtering device is marked as η_t：

f^-1(θ, H) is the inverse function of the function H ═ f (η, θ) with respect to variable η;

step 6, when the real-time value of the unobstructed degree of the filtering device is judged to be smaller than or equal to the critical value of the unobstructed degree, the equipment starts the filtering device to replace or clean for reminding; otherwise, go to step 4.

2. The method for detecting replacement cleaning of filtering device based on equipment parameter detection as claimed in claim 1, wherein the obtaining of the threshold value of patency in step 2 comprises steps S1-S3 as follows:

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;

and step S3, when the filtering effect difference is detected to be larger than the preset threshold value, taking the corresponding next filtering effect value when the filtering effect difference is calculated as the clear degree critical value of the filtering device.

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.

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 a functional relation model among the altitude height of an area where the equipment is located, the unobstructed degree of a filtering device and the equipment parameters; the altitude of the area where the equipment is located is marked as H, the unobstructed degree 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 clear degree critical value of the filtering device, wherein the clear degree critical value is marked as η_{Boundary of China}；

Step 3, when the equipment works by using the new filtering device for the first time, obtaining the initial value of the equipment parameter of the equipment and the initial value of the unobstructed degree of the filtering device, and obtaining 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 theta_InitialInitial value of degree of patency η of the filter device_Initial，h＝f(η_Initial,θ_Initial)；

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 theta_t，t≥0；

Step 5, obtaining a real-time value of the unobstructed degree of the filtering device in the equipment according to the obtained functional relation model and the obtained real-time value of the equipment parameter; wherein the degree of patency of the filter deviceThe real-time value is marked η_t：

f^-1(θ, H) is the inverse function of the function H ═ f (η, θ) with respect to variable η;

step 6, when the real-time value of the unobstructed degree of the filtering device is judged to be smaller than or equal to the critical value of the unobstructed degree, the equipment starts the filtering device to replace or clean for reminding; otherwise, go to step 4.

Further, in the method for detecting replacement and cleaning of a filtering device based on equipment parameter detection, the obtaining of the threshold value of the patency degree in step 2 includes 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;

and step S3, when the filtering effect difference is detected to be larger than the preset threshold value, taking the corresponding next filtering effect value when the filtering effect difference is calculated as the clear degree critical value of the filtering device.

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 unobstructed degree 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 an 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 patency degree of the filtering device, and obtaining the real-time value of the patency degree 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 smoothness degree of the filtering device is judged to be smaller than or equal to the critical value of the smoothness degree, the filtering effect of the filtering device is reduced, and then the filtering device is started to be replaced or cleaned to remind, so that the filtering device can be really treated and judged according to the actual smoothness degree of the filtering device, and can be timely and accurately replaced or cleaned to remind;

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 unobstructed degree of the filtering device can be set as required, 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.