CN110701758B - Air purification device and method - Google Patents

Further, the air purification method further comprises a method for determining the filtering efficiency of the filtering structure, and the method for determining the filtering efficiency of the

20 comprises the step of determining the filtering efficiency of each filtering structure under the condition of the air quantity by monitoring the concentration change of pollutants at the upstream and the downstream of the filtering structure which is put into use and combining the air quantity of the current fan.

As shown in fig. 1, the air purification method includes monitoring the concentration and the kind of pollutants in the air in real time; determining the type of

20 to be placed in service based on the concentration and type of contaminants; the performance parameters of the

20 in service are monitored in real time in conjunction with the concentration of contaminants to determine the operating frequency of the

30. Thus, the type of the

20 put into use is determined according to the concentration and the type of the pollutants, so that the utilization efficiency of the

20 can be improved, unnecessary loss of the

20 is reduced, meanwhile, the resistance in air filtration is reduced, and further, the operating pressure of the

30 is reduced; in addition, because the performance parameters of the

20 can be monitored in real time, when air purification is performed, the working frequency of the

30 is determined according to the performance parameters of the

20 and the concentration of pollutants, so that a better air purification effect is realized, the working efficiency is improved, the energy consumption is reduced, and the energy-saving and environment-friendly effects are achieved.

As shown in fig. 1, determining the type of the

20 to be put into use according to the concentration and the kind of the contaminants includes putting the

20 corresponding to the kind of the contaminants into use when the concentration of the contaminants is greater than a preset concentration. When filtering, when the concentration of pollutant is less than or equal to when presetting concentration, the

20 corresponding with the kind of this pollutant is in treating the workspace, and not carry out filtering work, only when the concentration of this pollutant is greater than when presetting concentration, just get into the workspace and come into use with the

20 corresponding with the kind of this pollutant, can improve

20's utilization efficiency like this, reduce

20 unnecessary loss, resistance when having reduced filtration simultaneously, and then the operating pressure of

30 has been alleviateed.

As shown in fig. 1, the performance parameters of the

20 include at least one of pressure drop and filtration efficiency. The performance parameters of the

20 are obtained by analyzing the upstream and downstream pressure drop and/or the filter efficiency of the

20, so that the working frequency of the

30 is better determined, the working efficiency is improved, the energy consumption is reduced, and the energy-saving and environment-friendly effects are achieved.

As shown in fig. 1, the air purification method further includes determining and storing a corresponding relationship between the filtering efficiency and the air volume according to the filtering efficiency under different air volumes. By establishing the database, the corresponding relation between the filtering efficiency and the air volume is stored in the database so as to be called when used next time. The air purification method further comprises the steps of monitoring the space volume of the use environment, and determining a plurality of target working air volumes corresponding to the

30 when each

20 put into use meets the purification requirement in the shortest time according to the space volume, the concentration of each pollutant, the standard concentration of each pollutant and the corresponding relation between the filter efficiency and the air volume. And analyzing according to various parameters to obtain the optimal air quantity required by each filtering

20 to purify the corresponding pollutant in the least time.

As shown in fig. 1, the maximum value or the average value of the plurality of target operation air volumes is the set operation air volume, and the

30 operates at the set operation air volume. The maximum value or the average value in the target working air volume is used as the set working air volume for working, so that each pollutant can be guaranteed to obtain the best filtering effect, the reliability of filtering is improved, and the working efficiency is improved.

As shown in fig. 1, the air purification method further includes a method of determining the filtration efficiency of the

20, and the method of determining the filtration efficiency of the

20 includes determining the filtration efficiency of each

20 at the current air volume by monitoring the concentration change of the pollutants at the upstream and downstream of the

20 in use and combining the current air volume of the

30. Through the filtration efficiency to

20 carries out the analysis to know

20's working property, and then select the operating frequency of

30 better, realize better filter effect, improve work efficiency, reduce the energy consumption.

As shown in fig. 1, when the filtering efficiency of any

20 is less than or equal to the preset efficiency parameter under the corresponding air volume, the alarm prompts that the corresponding

20 needs to be replaced or repaired. Therefore, the working performance of the

20 can be ensured, the filtering effect is improved, the energy consumption can be reduced, and the energy-saving and environment-friendly effects are achieved.

As shown in fig. 1, the preset efficiency parameter is equal to half of the initial efficiency parameter of the

20, when the filtering structure is not in use, the corresponding filtering efficiency under different air volumes is the initial efficiency, and the initial efficiency and the preset efficiency both have a one-to-one correspondence relationship with the air volume.

It should be noted that, according to the concentration change of the contaminants upstream and downstream of the

20 and in combination with the current air volume of the

30, the specific filtering efficiency of the

20 under the condition of the air volume is determined, the relationship between the filtering efficiency of each

20 and the air volume is refreshed, the efficiency of the

20 under the air volume is stored in the historical database, and the usage time of each

20 put into use is further determined in combination with the space volume.

According to the air volume of the

30 and the pressure drop of each

20, determining the relationship between the filter resistance parameter of each

20 and the air volume under the condition of the air volume, and calculating the purification resistance parameter of the current purification module in a summing manner.

As shown in fig. 1, the spatial volume and the concentration of the contaminants at the

20 and the filtration efficiency of each

20 in use satisfy:

wherein, V_X(n)Is the concentration of contaminants, E, at the

20_X(n)Is the filtration efficiency, V, of the

20_X(0)Is a standard value of the concentration of the pollutants, T is the purification time, V is the space volume of the use environment, and F (T) is the air volume.

As shown in fig. 1, the air purification method further includes determining the service time of each

20 to be used according to the filtering efficiency corresponding to the set operation air volume. The time of use of each

20 in use is determined to facilitate setting a preset acquisition time and determining the frequency of acquisition of contaminants and filter

20 based on the preset acquisition time.

As shown in fig. 1, all the

20 put into use constitute a purification module, and the air purification method further includes: and determining the working frequency of the

30 according to the set working air volume and the purification resistance parameter of the purification module. The working frequency of the

30 is determined so that the

30 can provide enough air volume for the filtering of the

20, so that the filtering effect is better and the working efficiency is higher.

As shown in fig. 1, the air purification method further includes a determination method of a purification resistance parameter of the purification module, the determination method including the steps of: collecting the pressure drop across each

20 in use; determining a filtration resistance parameter of each

20 under the condition of the air volume according to the air volume of the

30 and the pressure drop of each

20; the filtration resistance parameters of each

20 are summed to obtain the purification resistance parameter for the current purification module. The working frequency of the

30 can be better determined by the purification resistance parameter of the current purification module, so that enough air volume can be provided for the filtration of the

20, the filtering effect is better, and the working efficiency is higher.

It should be noted that, according to the air volume of the

30 and the pressure drop of each

20, in the case of determining the air volume, the relationship between the filter resistance parameter of each

20 and the air volume is determined, and the purification resistance parameter of the current purification module is calculated by summing, where the formula is

Wherein, P_(t)Is the purification resistance parameter, P, of the current purification module_xIs the filtration resistance parameter, F, of each

20_(t)Is the magnitude of the air volume.

As shown in fig. 1, when the filtration resistance parameter of any one of the

20 is greater than the preset resistance parameter, an alarm is given to indicate that the

20 needs to be replaced or repaired. Therefore, the working performance of the

20 can be ensured, the filtering effect is prevented from being influenced and the energy consumption is prevented from being increased due to overlarge filtering resistance, and the effects of energy conservation and environmental protection are favorably improved.

As shown in fig. 1, the preset resistance parameter is equal to twice the initial resistance parameter of the

20.

As shown in fig. 1, the collection frequency of the

20 is set according to the usage time of each

20 put into use under the set operating air volume, and the

30 and the

20 are kept in the state of being put into use according to the operating frequency of the

30 and the collection frequency of the

20 until the concentration of all the pollutants in the air is reduced to the corresponding preset concentration. Under the combined action of various parameters, the optimal purification mode is selected to achieve the optimal purification effect, and meanwhile, the energy consumption is minimum, so that the effects of energy conservation and environmental protection are achieved.

As shown in fig. 2, the air cleaning apparatus includes a

10, the

10 having a receiving chamber including a work area and a to-be-worked area, a variety of

20, a

30, a pollution monitoring sensor 40, and a filter structure performance monitoring sensor 50; each

20 selectively enters a working area and a to-be-worked area, and all the

20 entering the working area form a purification module; the

30 is used for blowing air to the purification module; the pollution monitoring sensor 40 is used for monitoring the concentration and the type of pollutants in the air; the filter structure performance monitoring sensor 50 is used to monitor performance parameters of the

20. Therefore, when in purification, the corresponding

20 is selected to enter the working area to work according to the concentration and the type of the pollutants in the air, and the

20 are positioned in the to-be-worked area, so that the utilization efficiency of the

20 can be improved, the unnecessary loss of the

20 is reduced, the resistance during air filtration is reduced, and the operating pressure of the

30 is further reduced; in addition, the performance parameters of the

20 are monitored in real time, so that the optimal filtering method can be selected, and the optimal filtering effect can be realized.

It should be noted that the way the

20 enters the working area and retracts to the waiting area is mechanically driven.

As shown in FIG. 3, the

20 include a filter 21 for removing particulate matter, a filter 22 for removing formaldehyde, a filter 23 for removing VOCs, and a filter for removing NH₃At least one of a sieve 24 and a sterilizing sieve 25.

As shown in fig. 3, the filter structure performance monitoring sensor 50 includes a pressure drop sensor 51 and a filter efficiency sensing assembly 52, the pressure drop sensor 51 being used to monitor the pressure drop of the

20; the filtration efficiency sensing assembly 52 is used to determine the filtration efficiency of the

20. The pressure drop and the filtration efficiency of the

20 are monitored and analyzed by the pressure drop sensor 51 and the filtration efficiency sensing component 52, so that the service performance of the

20 is obtained, and a better filtration effect is realized.

As shown in FIG. 3, filtration efficiency sensing assembly 52 includes a PM2.5 sensor, a formaldehyde sensor, a VOCs sensor, NH₃At least one of a sensor and a bacteria sensor, and is disposed at a position upstream and downstream of the

20. The filtration efficiency of the filtration device is analyzed by placing various sensors at locations upstream and downstream of the

20 to monitor changes in the concentration of contaminants.

As shown in fig. 3, the air cleaning device further includes an algorithm processor 80 and a controller 90, the pollution monitoring sensor 40 and the filter structure performance monitoring sensor 50 respectively transmit the concentration and the type of the pollutants in the air and the performance parameters of the

20 to the algorithm processor 80 for operation and analysis to determine the type of the

20 to be put into use and the operating frequency of the

30, the algorithm processor 80 transmits the operation and analysis results to the controller 90, and the controller 90 executes a relevant program to control the

30 and the

20 to start the cleaning operation.

The difference from the first embodiment is that the performance parameters of the

20 used to determine the operating frequency of the

30 are obtained from the last use.

In this embodiment, during each use of the air purification apparatus, the performance parameters of the

20 are analyzed and recorded, so that the operating frequency of the

30 can be determined according to the performance parameters of the

20 in the next purification process, in combination with the current pollutant concentration and the space volume of the use environment. Wherein, the purifying efficiency of the

20 is analyzed to obtain the relation between the purifying efficiency and the air volume.

1. An air purification method, comprising: monitoring the concentration and the type of pollutants in the air in real time; determining the type of filter structure (20) to be put into use based on the concentration and type of the contaminant; -monitoring in real time the performance parameters of the filtering structure (20) put into use and in combination with the concentration of the pollutants to determine the operating frequency of the fan (30); said determining the type of filter structure (20) to be put into use based on the concentration and type of said contaminants comprises: when the concentration of the pollutant is greater than the preset concentration, the filtering structure (20) corresponding to the type of the pollutant is put into use; the performance parameters of the filter structure (20) include at least one of pressure drop, filtration efficiency; the air purification method further includes: determining the corresponding relation between the filtering efficiency and the air volume according to the filtering efficiency under different air volumes and storing the corresponding relation;

the air purification method further comprises the steps of monitoring the space volume of the use environment, and determining a plurality of target working air volumes corresponding to the fan (30) when the filter structure (20) put into use meets the purification requirement in the shortest time according to the space volume, the concentration of each pollutant, the standard concentration of each pollutant and the corresponding relation between the filtering efficiency and the air volume;

wherein the spatial volume and the concentration of the contaminants at the filter structure and the filtration efficiency of each filter structure put into use satisfy:

V_X(n)*(1-E_X(n))^y＝V_X(0)，

T＝y*V/F_(t)，

wherein, V_X(n)Is the concentration of the contaminant at the filter structure, E_X(n)Is the filtration efficiency of the filter structure, V_X(0)Is a standard value for the concentration of the contaminant, T is the decontamination time, V is the volume of space in the environment of use, F_(t)Is the magnitude of the air volume;

the maximum value or the average value of the target working air volume is set working air volume, and the fan (30) works at the set working air volume; -all the filtering structures (20) put into use constitute purification modules, the air purification method further comprising: and determining the working frequency of the fan (30) according to the set working air volume and the purification resistance parameter of the purification module.

2. The air purification method according to claim 1, further comprising a method of determining the filtration efficiency of the filter structures (20), the method of determining the filtration efficiency of the filter structures (20) comprising determining the filtration efficiency of each filter structure (20) at the current air volume of the fan (30) by monitoring the concentration variations of contaminants upstream and downstream of the filter structure (20) put into use.

3. The air purification method according to claim 1, further comprising determining a service time of each filter structure (20) put into service based on the filter efficiency corresponding to the set operating air volume.

4. The air purification method according to claim 1, further comprising a determination method of a purification resistance parameter of the purification module, the determination method comprising the steps of: collecting the pressure drop of each filter structure put into use; determining the filtration resistance parameters of each filter structure under the condition of the air volume according to the air volume of the fan and the pressure drop of each filter structure; and summing the filtration resistance parameters of the filtration structures to obtain the purification resistance parameter of the current purification module.

5. The air purification method according to claim 1, wherein the collection frequency of the filter structure is set according to the service time of each filter structure put into use under the set working air volume, and the fan and the corresponding filter structure are kept in a state of being put into use according to the working frequency of the fan and the collection frequency of the filter structure until the concentration of all pollutants in the air is reduced to the corresponding preset concentration.

6. The air purification method according to claim 2, wherein when the filtration efficiency of any one of the filter structures is less than or equal to a preset efficiency parameter at the corresponding air volume, an alarm is given to prompt that the corresponding filter structure needs to be replaced or repaired.

7. The air purification method according to claim 6, wherein the preset efficiency parameter is equal to half of the initial efficiency parameter of the filter structure.

8. An air cleaning apparatus characterized by employing the air cleaning method according to any one of claims 1 to 7, comprising: the device comprises a shell (10), wherein the shell (10) is provided with a containing cavity, and the containing cavity comprises a working area and an area to be worked; a plurality of filter structures (20), wherein each filter structure (20) selectively enters the working area and the area to be worked, and all the filter structures (20) entering the working area form a purification module; a fan (30), the fan (30) being used to blow air to the purification module; a pollution monitoring sensor (40) for monitoring the concentration and type of pollutants in the air; a filter structure performance monitoring sensor (50) for monitoring a performance parameter of the filter structure (20).