CN111750497A - Starting control method of purifier under high elevation angle and low wind speed - Google Patents
Starting control method of purifier under high elevation angle and low wind speed Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 29
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- 238000007664 blowing Methods 0.000 description 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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Abstract
The invention discloses a starting control method of a purifier under high elevation and low wind speed, which comprises the steps of establishing a purifying time rule model of the air purifier under a high elevation and low wind speed mode according to actual operation conditions of the air purifier based on experimental and simulation data, calculating air purifying time of the air purifier under the high elevation and low wind speed mode by using the purifying time rule model under the high elevation and low wind speed mode, and controlling the air purifier to work by a controller according to the air purifying time. According to the invention, through the purification time prediction model of the purifier in the high-elevation small-wind-speed mode, the controller of the air purifier can better meet the requirements of people, so that the intelligent degree of the purifier is improved, and the life quality is further improved.
Description
Technical Field
The invention relates to the technical field of starting control of air purifiers, in particular to a starting control method of a purifier under high elevation angle and low wind speed.
Background
Along with science and technology constantly develops, the air purifier permeability that possess intelligent prompt facility such as filter screen renewal warning, air quality suggestion, air humidity instruction all has the promotion of different degree, and this means that intelligent air purifier product is receiving more people's recognition, and it is the tendency that intellectuality is great.
However, the existing air purifier has low overall intelligent degree, relatively simple design and single control system, so that the controller is required to meet the requirements of people more, and the life quality is further improved.
Particularly, the intelligent air purifier shown in fig. 1 has low overall intelligence degree, relatively simple design and single control system, has an intelligent circulator which can be raised and rotated, and has three air outlets, when the raising maximum angle of the intelligent circulator is 55 degrees, and when the raising maximum angle of the intelligent circulator is small angle, because the arrangement of the air outlets is different and the air speed is different from that of the three fans, the air purifier has the same purifying effect in the same room, and the opening time is different, so when the raising maximum angle of the intelligent circulator of the air purifier is 55 degrees, the upper limit of the air speed of the first air supply outlet is 0.75m/s, the upper limit of the air speed of the second air supply outlet is 0.875m/s, and the upper limit of the air speed of the third air supply outlet is 3.875m/s, how to realize the intelligent control of the air purifier, so as to accurately calculate the air purifying time, the starting time of the air purifier under the condition is controlled more intelligently, and the method has important significance for improving the intellectualization of the air purifier.
Disclosure of Invention
The present invention is directed to solve the above problems in the prior art, and an object of the present invention is to provide a method for controlling the activation of a scrubber at a high elevation angle and a low wind speed.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a starting control method of a purifier under high elevation and low wind speed is characterized in that a purifying time rule model of the air purifier under a high elevation and low wind speed mode is established based on experimental and simulation data according to actual operation conditions of the air purifier, the purifying time rule model under the high elevation and low wind speed mode is utilized to calculate the air purifying time of the air purifier under the high elevation and low wind speed mode, and then the controller controls the air purifier to work according to the air purifying time;
wherein, the air purifier purifies the time law model as follows under the little wind speed mode of high angle of elevation:
t＝-0.012α+0.379η+-2.030+0.163ρ-0.002β+0.052L-6.957
alpha represents the horizontal angle of the air blown by the purifier, eta represents the room area, r represents the room aspect ratio,
ρ represents the room PM2.5 initial concentration, β represents the person's angle to the purifier, and L represents the person's distance from the purifier;
the air purifier is cylindrical and is provided with three air supply outlets from top to bottom, the top of the air purifier is provided with an intelligent circulator which can be lifted and rotated, the elevation angle of the intelligent circulator is 55 degrees, the upper limit of the air speed of a first air supply outlet formed on the intelligent circulator is 0.75m/s, the upper limit of the air speed of a second air supply outlet is 0.875m/s, and the upper limit of the air speed of a third air supply outlet is 3.875 m/s; and the second air supply outlet and the third air supply outlet are respectively formed on the two cylindrical purification modules of the air purifier.
The air purifier forms a purification time law model under a high elevation angle and small wind speed mode according to the following steps:
1) determining factors influencing the purifying time of the air purifier and the variation range of each factor according to the actual operating conditions of the air purifier;
2) according to the determined factors influencing the purification time of the air purifier and the variation range of each factor, ANSYS software is used for simulating the purification time conditions of each position in the room under different influence parameters in the high-elevation small-wind-speed mode;
3) based on SPSS software, regression analysis is carried out on the data by using a statistical analysis program based on experimental data and simulation data, and a purification time rule model of the air purifier in a high-elevation small-wind-speed mode is obtained.
The method comprises the following steps that in a purifier performance standard test chamber, an experiment is obtained after the influence of an air purifier on an indoor flow field and the PM2.5 purification effect is tested; after the cigarette lighting is finished in each experiment, stirring by using a fan, and starting an air purifier to purify after pollutants are uniformly distributed;
and comparing the simulation data obtained under the simulation working condition with the experimental data, verifying the correctness of model establishment and the reasonability of boundary condition setting, and verifying the accuracy of the model.
According to the method, the interaction relationship between the purification time of the purifier and the room PM2.5 initial concentration, the personnel position (distance and angle from the purifier), the horizontal blowing angle of the purifier, the room area and the room length-width ratio is fitted by respectively applying linear regression and multivariate nonlinear regression methods under a high-elevation small-wind-speed mode (the elevation angle of the intelligent circulator is 55 degrees, the maximum wind speed of the first fan is 0.75m/s, and the maximum wind speed of the second fan is 0.875m/s), the purification time rule of the purifier under the high-elevation small-wind-speed mode is obtained through comparison, and then the purification time prediction model of the purifier under the high-elevation small-wind-speed mode is obtained through the rule, so that the optimal starting time of the air purifier under the high-elevation small-wind-speed mode is controlled.
According to the invention, through the purification time prediction model of the purifier in the high-elevation small-wind-speed mode, the controller of the air purifier can better meet the requirements of people, so that the intelligent degree of the purifier is improved, and the life quality is further improved. The model determines the prediction result through regression analysis, the accuracy of the prediction result obtained through multivariate regression analysis is high, the control system is simple, real-time control can be realized, and the method is suitable for being applied to control of the residential building purifier.
Drawings
Fig. 1 is a schematic view of an air cleaner according to the present invention.
Fig. 2 is a flowchart of a method for controlling the activation of the scrubber at high elevation and low wind speed.
FIG. 3 is a schematic plan view of the purifier and personnel location.
FIGS. 4-5 are graphs comparing two sets of experimental data with simulated data, respectively.
FIG. 6 is a schematic diagram of a purifier purge time system according to the present invention.
In the figure: 1-stirring fan; 2-an air purifier; 3-particulate matter detector (Met One (AEROCET 531S)); 4-a circulating fan; 5-particle generating device (cigarette lighter); 6-return air inlet B3; 7-blower a 1; 8-blower a 2; 9-blower a 3; 10-intelligent circulator; 11-supply-air outlet C1; 12-return air vent B1; 13-supply air outlet C2; 14-return air vent B2; 15-blower C3.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention uses the principal component analysis method to analyze, determines the influence factors which have important influence on the purification time, uses the experimental and numerical simulation results as sample data, and uses the multivariate statistical analysis based on SPSS to obtain the purification time rule of the air purifier under the high elevation angle and small wind speed mode.
As shown in fig. 1, the specific steps of the start control method of the purifier under high elevation angle and small wind speed of the invention are as follows:
1) determining factors affecting the decontamination time of a purifier
Because the purification speed of the purifier depends on the purifier and the environment of the purifier, the factors influencing the purification time need to be considered to determine the change rule of the purification time under the mode of high elevation angle and small wind speed (the elevation angle of the intelligent circulator is 55 degrees, the maximum wind speed of the first fan is 0.75m/s, and the maximum wind speed of the second fan is 0.875 m/s). From the analysis of the overall environment where the purifier is located, the factors influencing the purification time of the purifier can be roughly divided into four parts: indoor environment, room size, personnel location, and the purifier itself.
(1) The indoor environmental parameters affecting the purification time of the purifier mainly include: room PM2.5 initial concentration. According to the related documents and investigation, the concentration of PM2.5 in the buildings such as offices in Tianjin City in the heating period is 150 mu g/m3In the meantime.
(2) Room size also affects purifier clean-up time. The room dimensions include room area and room aspect ratio.
(3) The location of the person.
The room aspect ratio can influence the purifier relative position with the wall under a certain blowing angle, because the air current tissue generates the backward flow when the purifier air-out touches the wall, so the room aspect ratio can influence the purifier purification time of personnel at the position closer to the wall, and the room aspect ratio change can influence the indoor personnel position, so the room aspect ratio and the personnel position are non-independent variables.
(4) Starting from the purifier itself, factors influencing the purification time of the purifier are: the horizontal angle of blowing of the purifier, the placement position of the purifier and the use mode of the purifier. The present invention performs simulations and experiments in a fixed position and in a single mode of operation, so that these two influencing factors are not considered.
From the above, factors and variation ranges affecting the purification time of the purifier can be derived, see table 1.
| Numbering | Influencing factor | Value range | Amplitude of bending |
| 1 | Room initial concentration rho/mug/m3 | 50-150 | 50 |
| 2 | The angle formed by the person and the purifier is β/° | 0-180 | 30 |
| 3 | Distance L/m between person and purifier | 0-15 | 0.5 |
| 4 | Horizontal blowing angle α/° of purifier | 0-90 | 45 |
| 5 | Room area η/m2 | 54-90 | 18 |
| 6 | Room aspect ratio Г | 1：1.5，1：2，1：2.5 |
TABLE 1
2) Obtaining sample data by ANSYS software simulation
Through the analysis of the process of purifying PM2.5 by the purifier, the factors influencing the purification time are numerous and the factors influence each other. ANSYS software is used for simulating the purification time for purifying PM2.5 by the purifier in a mode (the elevation angle of the intelligent circulator is 55 degrees, the maximum wind speed of the first fan is 0.75m/s, and the maximum wind speed of the second fan is 0.875m/s) under high elevation angle and small wind speed to reach an acceptable range. And the correctness of model establishment and the reasonability of boundary condition setting are verified by comparing the simulation result with the experimental data. On the basis, the influence of the PM2.5 initial concentration of different rooms, the personnel position (distance and angle from the purifier), the blowing horizontal angle of the purifier, the room area and the room length and width ratio on the purification time is subjected to extended research. When the influence rule of the influence factors is researched, due to the fact that the experiment amount is large, an orthogonal experiment design method is introduced to select representative influence factors to carry out combined simulation, and a basis is provided for mathematical statistics.
In particular, in a standard test chamber (60 m) for purifier performance3) The influence of the internal air purifier 2 on the indoor flow field and the PM2.5 purification effect is tested. Experiment at every turn is at the cigar lighter through the outside setting of standard test cabin, 5 some 4 points of particulate matter generating device have been accomplished with the cigarette back promptly, with cigarette input standard test under-deck, stir 10min with the 1 stirring fan at top, there is circulating fan 4 to make the wind cycle with one side, open the air purifier 2 that is located standard test cabin one corner after guaranteeing that the pollutant distributes evenly and purify, detect indoor particulate matter state with particulate matter detector 3, particulate matter data before and after the acquisition experiment.
And establishing a model with the same area as the experimental room and the same simulation working condition as the experimental working condition for verifying the accuracy of the model. According to the error analysis, the maximum error and the average error of the simulation and the experiment of the indoor personnel at the distances of 3m and 6m from the purifier are less than 15%, the model is considered to be accurate, and the model verification data are compared, as shown in FIGS. 4 to 5.
3) The SPSS software is used for carrying out correlation analysis on time when the concentration of PM2.5 in the room is reduced to a specified range and each influence factor, the influence factor which has important influence on the purification time is determined through a principal component analysis method according to a simulation result, the goodness of fit decision coefficient and the correction goodness of fit decision coefficient of the regression equation are respectively 0.959 and 0.958, and the degree of fit is high.
According to the method, experimental and simulation results are taken as sample data, and the time distribution rule under the conditions of different room areas, length-width ratios, personnel positions and room PM2.5 initial concentrations is finally obtained by applying SPSS software.
t＝-0.012α+0.379η+-2.030+0.163ρ-0.002β+0.052L-6.957
α: horizontal angle of blowing of purifier, unit: degree (°)
η Room area, unit m2
R: the aspect ratio of the room,
ρ: room PM2.5 initial concentration, SingleBit: mu g/m3
Beta: angle of the person to the purifier, unit: in degrees (°),
l: distance of person from purifier, unit: and m is selected.
According to the method, the optimal starting time prediction model is established by determining the purification time rule of the air purifier at each indoor personnel position in the high-elevation small-wind-speed mode, and the starting time of the air purifier is controlled, so that a better purification effect is achieved.
The model of the invention determines the prediction result through regression analysis, the accuracy of the prediction result obtained by multivariate regression analysis is higher, the control system is simple, real-time control can be realized, and the model is suitable for being applied to the control of the residential building purifier.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. The starting control method of the air purifier under the high elevation and small wind speed is characterized in that a purifying time rule model of the air purifier under a high elevation and small wind speed mode is established based on experimental and simulation data according to the actual operation condition of the air purifier, the purifying time rule model under the high elevation and small wind speed mode is utilized to calculate the air purifying time of the air purifier under the high elevation and small wind speed mode, and then the controller controls the air purifier to work according to the air purifying time;
wherein, the air purifier purifies the time law model as follows under the little wind speed mode of high angle of elevation:
t＝-0.012α+0.379η+-2.030+0.163ρ-0.002β+0.052L-6.957
alpha represents the horizontal angle of the air blown by the purifier, eta represents the room area, r represents the room aspect ratio,
ρ represents the room PM2.5 initial concentration, β represents the person's angle to the purifier, and L represents the person's distance from the purifier;
the air purifier is cylindrical and is provided with three air supply outlets from top to bottom, the top of the air purifier is provided with an intelligent circulator which can be lifted and rotated, the elevation angle of the intelligent circulator is 55 degrees, the upper limit of the air speed of a first air supply outlet formed on the intelligent circulator is 0.75m/s, the upper limit of the air speed of a second air supply outlet is 0.875m/s, and the upper limit of the air speed of a third air supply outlet is 3.875 m/s; and the second air supply outlet and the third air supply outlet are respectively formed on the two cylindrical purification modules of the air purifier.
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| WO2015063867A1 (en) * | 2013-10-29 | 2015-05-07 | 三菱電機株式会社 | Air purifier |
| CN107559984A (en) * | 2016-02-26 | 2018-01-09 | Lg电子株式会社 | Air cleaner |
| US20180290104A1 (en) * | 2017-04-10 | 2018-10-11 | Fuh-Cheng Jong | Intelligent air purifier |
| CN108662720A (en) * | 2018-04-18 | 2018-10-16 | 四川斐讯信息技术有限公司 | A kind of the filter core replacement based reminding method and device of Intelligent air purifier |
-
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- 2020-07-03 CN CN202010629829.3A patent/CN111750497B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001330298A (en) * | 2000-05-23 | 2001-11-30 | Matsushita Electric Ind Co Ltd | Control method of air-conditioning system |
| CN202973457U (en) * | 2012-11-21 | 2013-06-05 | 杨红春 | Fresh air system control component |
| WO2015063867A1 (en) * | 2013-10-29 | 2015-05-07 | 三菱電機株式会社 | Air purifier |
| CN104296317A (en) * | 2014-09-29 | 2015-01-21 | 珠海格力电器股份有限公司 | control method and device of air purifier |
| CN107559984A (en) * | 2016-02-26 | 2018-01-09 | Lg电子株式会社 | Air cleaner |
| US20180290104A1 (en) * | 2017-04-10 | 2018-10-11 | Fuh-Cheng Jong | Intelligent air purifier |
| CN108662720A (en) * | 2018-04-18 | 2018-10-16 | 四川斐讯信息技术有限公司 | A kind of the filter core replacement based reminding method and device of Intelligent air purifier |
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