Air Purifier and Filter Replacement Control Method

Abstract

The present invention relates to an air purifier and a filter element replacement control method, and belongs to the field of household appliances. An air purifier, the air purifier comprises: an outer shell component, the outer shell component is provided with a accommodating chamber, a filter hole and an air outlet; an inner shell component, the inner shell component is arranged on the outer shell component and is located in the accommodating chamber, the inner shell component is provided with a filter element accommodating chamber, an air supply chamber and an air inlet hole, the filter hole, the filter element accommodating chamber, the air inlet hole, the air supply chamber and the air outlet are connected in sequence; a filter element, the filter element is located in the filter element accommodating chamber; a fan, the fan is located in the air supply chamber, the air inlet side of the fan is connected with the filter element accommodating chamber, and the air outlet side of the fan is connected with the air outlet. The present application realizes timely replacement of the filter element by utilizing the filter element replacement control method, so that the purification effect of the air purifier is always in a better state, ensuring the user experience.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to an air purifier and a filter element replacement control method. Background Art

[0002] In the prior art, due to the long-term use of the air purifier, the filter element is not replaced in time, which often results in poor purification effect and causes the internal fan to overload, resulting in a bad user experience. Summary of the invention

[0003] Based on this, it is necessary to provide an air purifier and a filter element replacement control method to address the problem of untimely replacement of the filter element of the air purifier.

[0004] 14. The air purifier of claim 13, wherein the air purifier further comprises a filter element, wherein the filter element is disposed on the outer shell component and is located in the accommodating cavity, wherein the filter element is provided ...

[0005] The present application discloses an air purifier, which is mainly composed of an outer shell component, an inner shell component, a filter element and a fan. The filter element is arranged in a filter element accommodating chamber provided in the inner shell component, thereby protecting the filter element. During daily use of the air purifier, the filter element may be subjected to external collision, extrusion or vibration. If the filter element is directly exposed to the outside, these external forces may easily damage the filter element, resulting in a decrease in the filtering performance of the filter element or even complete failure. Placing the filter element in a special accommodating chamber can effectively avoid the direct effect of these external forces and extend the service life of the filter element. The fan is arranged on the inner shell component, and the inner shell component is arranged on the outer shell component. The outside air is driven by the fan, passes through the filter element from the filter hole arranged on the outer shell component, and then enters the air supply cavity through the air inlet hole after being filtered by the filter element, and finally blows out from the air outlet. First of all, the filter hole in this structure plays a preliminary filtering role, filtering out the larger impurity particles in the air first, preventing them from entering the interior of the air purifier and clogging the filter element, which greatly reduces the filtering function of the filter element. Secondly, the filter element removes some harmful substances, odors or dust from the air to ensure that the air in the user's environment remains clean. The air purifier can effectively remove inhalable particles in the air. For larger particles such as dust, pollen, and pet dander, the air purifier can also quickly capture and filter them. At the same time, the air purifier reduces the humidity and nutrient content in the air by filtering and purifying the air, creating environmental conditions that are not conducive to the reproduction of microorganisms, thereby inhibiting the growth and reproduction of microorganisms such as bacteria and molds. This is of great significance for preventing indoor items from mold and deterioration, and reducing the occurrence of diseases such as respiratory infections.

[0006] In one of the embodiments, it also includes a magnetic cover assembly, the housing assembly is provided with a filter housing groove, the magnetic cover assembly is arranged on the housing assembly and the cover is arranged at the filter housing groove. By arranging the magnetic cover assembly in the filter housing groove provided in the housing assembly, when the user needs to replace the filter element of the air purifier, the user can easily and quickly open the magnetic cover assembly, remove the old filter element and install a new filter element through the characteristics of magnetic adsorption. The user does not need to use tools or perform complicated operations, just a light pull, and the magnetic cover assembly will separate, which greatly improves the efficiency and convenience of replacing the filter element. At the same time, during the operation of the air purifier, in order to ensure the purification effect, it is necessary to prevent unfiltered air from bypassing the filter element and directly entering the air purifier. The magnetic cover assembly is tightly installed in the filter housing groove, which can form a good seal to prevent air from leaking from the connection between the magnetic cover assembly and the filter housing groove, and ensure that all air entering the air purifier can be effectively filtered by the filter element.

[0007] In one embodiment, the magnetic cover assembly includes a cover body and a handle, the cover body is provided with a handle receiving groove, the handle is passed through the cover body and is limited at the handle receiving groove. By setting the handle on the handle receiving groove provided on the cover body, and the handle is passed through the cover body, the user can conveniently grasp the handle and easily apply force to take out the magnetic cover assembly, take out the filter element in the air purifier for cleaning or replacement, and ensure that the air purifier can continuously and effectively remove various pollutants in the air, maintain a good purification effect, and ensure the cleanliness and health of the indoor air. Timely replacement of the filter element can reduce the working pressure of the purifier and extend its service life. At the same time, setting the handle in the handle receiving groove protects the handle to a certain extent, reduces the possibility of external collision and can ensure its firmness, thereby extending the service life of the magnetic cover assembly.

[0008] In one embodiment, the housing assembly includes a filter housing, a rear housing, a bottom housing and a top housing, the filter housing and the rear housing are both mounted on the bottom housing, the top housing is mounted on the filter housing and the rear housing, and the filter housing, the rear housing, the bottom housing and the top housing are enclosed together to form the accommodating chamber. By mounting the filter housing and the rear housing on the bottom housing, and mounting the top housing on the filter housing and the rear housing, the housing components are mounted and combined with each other to form a stable overall structure, ensuring that the internal fan and other components can work stably during the operation of the air purifier, reducing vibration, noise and other problems caused by the unstable housing structure, and improving the stability of the structure. This combination of housings can reasonably plan the air entry, filtration and discharge paths according to the internal structural design, improve the air purification efficiency, and when a component of the air purifier fails or is damaged, the corresponding housing part can be disassembled and repaired in a targeted manner, reducing the maintenance cost and difficulty. By designing the filter housing separately and mounting it on the bottom housing, it is convenient for users to open the filter housing and quickly replace the internal filter screen to ensure the purification effect and performance of the air purifier. Because the filter shell, rear shell, bottom shell and top shell together form a accommodating cavity, a closed space is provided for the fan and other components inside the air purifier, which effectively prevents external dust, water vapor, collision, etc. from damaging these key components, and extends the service life and stability of internal components.

[0009] In one of the embodiments, the filter housing is provided with the filter holes, the number of the filter holes is multiple, the filter holes are circular, and the multiple filter holes are evenly distributed on the filter housing. By providing multiple filter holes on the filter housing, and the multiple filter holes are evenly distributed on the filter housing, the evenly distributed filter holes can ensure that air enters the interior of the air purifier evenly from all directions. This makes the filtration load of each part of the filter housing more uniform when the air passes through the filter housing, improves the overall utilization rate and service life of the filter, avoids the problem of premature failure due to local overuse, and the setting of multiple filter holes increases the area and channel of the air intake, so that more air can enter the interior of the purifier for filtration and purification per unit time, thereby improving the purification efficiency and speed of the air purifier, and can purify the indoor air faster. At the same time, the filter holes are set to be circular, so that the resistance of air passing through is relatively small, and the flow is smoother. The small air flow resistance helps to reduce the workload of the fan, reduce energy consumption, and reduce the noise generated by air flow. The circular filter holes have no sharp corners and edges, and impurities such as particles and dust in the air are not easy to accumulate and clog at the filter holes when passing through, which is conducive to keeping the filter holes unobstructed and maintaining a stable air intake flow and purification efficiency.

[0010] In one embodiment, the top shell includes a top shell body and air guide plates, the top shell body is arranged on the filter shell and the rear shell, the number of the air guide plates is multiple, and the multiple air guide plates are spaced apart on the top shell body, and the air outlet is formed between adjacent air guide plates. The top shell is formed by arranging the top shell body on the filter shell and the rear shell and arranging multiple air guide plates on the top shell body. Since the multiple air guide plates are spaced apart on the top shell body and form an air outlet, the purified air can be rectified and guided first, and the direction and angle of the air outlet can be controlled to a certain extent, so that the air purifier can deliver the purified air to the required area in a targeted manner, and the airflow can be discharged more regularly and orderly, thereby improving the targetedness and effectiveness of air purification, and at the same time reducing the generation of turbulence and vortexes, and avoiding the situation of strong local air outlet and weak local air outlet, thereby improving the efficiency and stability of air outlet. Secondly, the regular air outlet helps to reduce friction and turbulent noise during air flow, making the air purifier quieter during operation and improving the user experience.

[0011] In one embodiment, the inner shell assembly includes a front shell and a rear cover, the front shell is arranged on the outer shell assembly, the front shell is provided with the air inlet hole, the rear cover is arranged on the front shell, the rear cover and the front shell form the air supply chamber, and the air supply chamber is turbine-shaped. By arranging the front shell on the outer shell assembly, providing the air inlet hole on the front shell, arranging the rear cover on the front shell to form an inner shell assembly and forming an air supply chamber inside, a stable and specific flow space and path is provided for the air. The formed air supply chamber can play a certain buffering role, so that the pressure and flow rate of the purified air are balanced in the chamber, thereby outputting a relatively stable wind speed and air volume, ensuring that the purified air of the air purifier can be continuously and stably delivered to the surrounding space. At the same time, designing the air supply chamber into a turbine shape helps to make the air flow in the chamber more uniform and smooth, reduce energy loss and waste, improve the energy utilization efficiency of the air purifier, and reduce energy consumption. The structure of the turbine chamber can absorb and block the noise generated by the airflow to a certain extent, reduce the spread of air flow noise, make the air purifier quieter during operation, and enhance the user experience.

[0012] In one embodiment, the number of the air inlet holes is multiple, and the multiple air inlet holes are evenly arranged on the front shell, and the multiple air inlet holes are distributed in a ring shape. By providing multiple air inlet holes on the front shell, the setting of multiple air inlet holes increases the number of channels and the total area for the purified air to enter the air purifier, so that more purified air can enter the device per unit time, thereby improving the working efficiency of the air purifier. Since the multiple air inlet holes are evenly and circumferentially arranged on the front shell, it can be ensured that the air enters uniformly from all directions of the device, avoiding the problem of uneven air intake caused by the air entering only from a certain direction. At the same time, the circumferential uniform air intake method can better promote the circulation of indoor air. The air is sucked into the air purifier from all directions and then discharged, which speeds up the renewal speed of the indoor air, so that the air in the entire space can be purified faster, and the user experience is guaranteed. The multiple air inlet holes are connected to the air supply cavity, so that the purified air can smoothly enter from the air inlet holes and then be sent out through the air supply cavity, forming a complete and continuous air flow path, ensuring the smooth progress of the air purification process.

[0013] In one embodiment, a control panel is further included, the housing component is provided with a panel mounting hole, and the control panel is arranged on the housing component and located at the panel mounting hole. By arranging the panel mounting hole on the top shell of the housing component and arranging the control panel at the panel mounting hole, the user can conveniently operate and control the device on the outer surface of the air purifier, and can adjust various functional parameters without opening the device housing or performing complicated operations, thereby increasing the convenience of operation. At the same time, through the control panel installed on the surface of the housing, the user can intuitively see the working status of the air purifier, air quality indicators and other information, which is convenient for the user to understand the operation status and air purification effect of the device in real time, so as to make corresponding adjustments and maintenance in time.

[0014] In one of the embodiments, it also includes a power box, which is arranged on the inner shell component and located in the accommodating cavity. By arranging the power box on the inner shell component and located in the accommodating cavity, firstly, the space inside the air purifier can be fully utilized to avoid additional increase in the external volume of the equipment, making the structure of the air purifier more compact and saving placement space. At the same time, it can reduce direct damage to the power box caused by external collisions, squeezing, dust, water vapor, etc., reduce the risk of power box failure, and improve its stability and safety. Furthermore, since the power box is located in the accommodating cavity, the air flow inside the air purifier can be used to dissipate the heat generated by the power box when it is working in time, preventing the power box from being damaged due to overheating, extending the service life of the power box, ensuring the long-term and stable operation of the air purifier, and improving user satisfaction.

[0015] In one embodiment, a plurality of flow meters are further included, and the plurality of flow meters are respectively located at the air inlet, the air supply chamber and the air outlet. The flow meter located at the air inlet can accurately measure the air flow entering the fan. The flow meter arranged in the air supply chamber can accurately measure the air flow during the fan processing process. The flow meter at the air outlet measures the outlet flow of the processed air. The distributed flow meter configuration allows real-time monitoring of the flow of air during the entire purification process. The flow data at multiple locations is fed back to the control system to support the implementation of intelligent control strategies.

[0016] The second aspect of the present application discloses a filter element replacement control method, the filter element replacement control method comprising the following steps:

[0017] S1. Obtain the overall excess air volume of the fan;

[0018] S2, monitor the current change of the fan and obtain the load condition of the fan;

[0019] S3. Obtain the blocking degree of the filter element through the load condition of the fan and the overall air flow rate;

[0020] S4. When the blocking degree of the filter element exceeds the preset value, it will remind you to replace the filter element.

[0021] By accurately measuring the overall excess air volume of the fan, the air flow processed by the air purifier can be understood in real time. This helps ensure the stable operation of the system under different loads and working conditions. Monitoring the current changes of the fan can accurately reflect the load of the fan. Through the current data, the working status of the fan, including the load size and change trend, can be inferred. The blockage degree of the filter element can be intelligently calculated using the load condition and the overall excess air volume of the fan. By combining the fan load with the excess air volume data through an algorithm or model, the dust accumulation and blockage of the filter element can be accurately evaluated. Set a preset filter element blockage threshold. Once the filter element blockage degree exceeds the preset value, the system will promptly issue a reminder signal to prompt the user or operation and maintenance personnel to replace the filter element. This effectively extends the service life of the air purifier and ensures the continuous and efficient operation of the air purifier. By real-time monitoring and intelligent control of the filter element blockage degree, unnecessary energy waste can be avoided and the energy efficiency ratio of the air purifier can be improved. Timely replacement of the filter element can also maintain the optimal performance of the equipment and ensure the provision of clean and healthy air.

[0022] In one embodiment, the specific steps of step S1 are as follows:

[0023] S11, collecting flow data of the air inlet, air supply cavity and air outlet of the fan;

[0024] S12, filtering the collected flow data to remove noise and mutation data in the measurement to ensure smooth and reliable flow data;

[0025] S13, performing consistency check on the flow data of the air inlet, air supply cavity and air outlet to verify the reliability of the data;

[0026] S14, calculating the overall air flow rate according to the flow data of the air inlet, the air supply cavity and the air outlet;

[0027] S15. Regularly analyze the collected flow data, evaluate the stability of the system and the accuracy of the measurement, identify potential deviations or anomalies, and make timely adjustments and corrections.

[0028] By collecting the flow data of the air inlet, air supply cavity and air outlet of the fan, the system can monitor and record the flow of air in different parts in real time, so as to accurately grasp the operating status of the entire system. The collected flow data is filtered to remove noise and mutation data in the measurement to ensure smooth and reliable flow data. This helps to avoid data fluctuations caused by sensor errors or environmental changes and improve the accuracy and stability of the data. The flow data of the air inlet, air supply cavity and air outlet are checked for consistency to verify the reliability and accuracy of the data. This ensures that the data collected by the system at each measurement point is consistent and reliable, providing a reliable basis for subsequent data analysis and calculation. According to the flow data of the air inlet, air supply cavity and air outlet, the overall air flow is calculated by weighted average method. The flow data collected at different locations are weighted using weights to ensure that the contribution of the flow at different locations to the overall air flow is reasonably distributed according to their importance, so as to accurately calculate the total air flow handled by the system. The collected flow data is analyzed regularly to evaluate the stability of the system and the accuracy of the measurement. By identifying possible deviations or abnormal situations, the system can make timely adjustments and corrections to ensure that the air purifier continues to operate stably and efficiently.

[0029] In one embodiment, the specific steps of step S14 are as follows:

[0030] S141, obtaining weights of traffic data collected at different locations;

[0031] S142, calculating the overall excess air volume by a weighted average method;

[0032] S143. The formula for calculating the overall excess air volume by weighted average method is as follows:

[0033] Qoverall=Winlet·Qinlet+Wduct·Qduct+Woutlet·Qoutlet

[0034] Among them, Qoverall is the overall air volume, Qinlet is the flow data of the air inlet, Qduct is the flow data of the air supply cavity, Qoutlet is the flow data of the air outlet, Winlet is the weight of the air inlet, Wduct is the weight of the air supply cavity, and Woutlet is the weight of the air outlet.

[0035] By using the weighted average method to calculate the overall airflow, it is ensured that the flow data collected at different locations are reasonably weighted according to their importance. The weights of the flow data collected at different locations can be determined based on factors such as the location of the flow sensor, the length and complexity of the flow path. Reasonable weight distribution can more accurately calculate the overall airflow, improve the credibility of the data and the stability of the system. By continuously monitoring the overall airflow, the system can provide real-time feedback on the current air treatment efficiency. By regularly analyzing and evaluating the overall airflow data, the possibility of filter blockage or other problems can be predicted, and measures can be taken in advance to avoid equipment failure or performance degradation, thereby improving the reliability and durability of the air purifier.

[0036] In one embodiment, the specific steps of step S141 are as follows: collect flow data at different locations through experiments or field tests, analyze the actual contribution of each location under different working conditions, and obtain weight coefficients based on the actual data so that it can accurately reflect the actual situation. The flow data at different locations collected through experiments or field tests can accurately reflect the actual contribution of each location to the overall air flow under different working conditions. This method of determining weight coefficients based on experimental data enables the system to adjust and optimize the weighted calculation of flow data.

[0037] In one embodiment, the specific steps of step S2 are as follows:

[0038] S21. Configure a current sensor to collect current data during the operation of the fan in real time;

[0039] S22, filtering the data obtained from the current sensor to remove possible noise and interference to obtain a stable and reliable current signal;

[0040] S23. Evaluate the load condition based on the current size. The expression is: , where I is the current of the fan measured in real time, Imin is the minimum allowable value of the current, corresponding to the minimum load or no-load state of the fan, and Irated is the maximum allowable value of the current, corresponding to the rated load state of the fan.

[0041] Configuring a current sensor can collect current data in real time during the operation of the fan. This can directly reflect the current working status and load conditions of the fan, and provide real-time monitoring and feedback for the system operation status. The data obtained from the current sensor is filtered to remove possible noise and interference to obtain a smooth and reliable current signal. This ensures that the system can accurately capture and analyze current changes in complex environments and different working conditions, and improves the accuracy and stability of the data. Based on the real-time current data to evaluate the load conditions, the system can monitor in real time whether there are abnormal current values ​​(exceeding or falling below the preset range), and issue alarms or make automatic adjustments in a timely manner. This helps prevent equipment overload or underutilization and optimize equipment operation and maintenance strategies.

[0042] In one embodiment, S31, the blocking degree of the filter element is calculated using the comprehensive change of the air volume and the load condition, and the blocking degree formula is as follows: , where: D is the degree of filter element blocking, k is the calibration coefficient, L is the fan load, L0 is the fan load when the system is installed, Q0 is the overall excess air volume at the initial stage of system installation, and Q is the real-time overall excess air volume;

[0043] S32. Using the load condition L and the overall air flow rate Q acquired in real time, the above formula is applied to calculate the blocking degree D of the filter element in real time.

[0044] By comprehensively considering the changes in the air volume and fan load, the blockage degree of the filter element can be calculated in real time. This formula can reflect the actual blockage of the filter element during operation, helping to timely identify the working status and health of the filter element. The calibration coefficient k plays an adjustment and calibration role in the formula, and can be adjusted according to the actual situation of the specific system and environmental changes. This makes the calculation of the blockage degree more accurate and reliable, in line with actual operational needs. : Based on the blockage degree D calculated in real time, a preventive maintenance plan can be formulated to regularly clean or replace the filter element to maintain efficient operation and long-term stability of the system. This helps to reduce maintenance costs, extend equipment life, and ensure that the air purification effect continues to meet standards.

[0045] In one embodiment, the step S32 is followed by the following steps:

[0046] S33. Regularly analyze historical data, identify the causes of filter plugging problems, and develop continuous optimization strategies;

[0047] S34. Optimize the filter element blocking degree calculation model based on actual operation data to improve prediction accuracy;

[0048] S35. Through intelligent analysis, possible faults and problems can be identified in advance, and preventive maintenance measures can be taken to reduce downtime and maintenance costs.

[0049] By regularly analyzing historical data on the degree of filter plugging, the causes of plugging problems can be identified and continuous optimization strategies can be developed. This data-driven improvement approach can continuously improve system performance and filter life, effectively avoiding recurring problems. Based on actual operating data, the calculation model of the degree of filter plugging can be continuously optimized to improve the accuracy of predictions. This ensures that the system can more accurately assess the degree of filter plugging, so that timely measures can be taken to avoid equipment performance degradation or damage. Through intelligent analysis, possible faults and problems can be identified in advance, and preventive maintenance measures can be taken. This can effectively reduce downtime and maintenance costs, improve the operational reliability and stability of the system, and ensure the continuous and efficient operation of the equipment. Through optimization strategies and preventive maintenance measures, operating costs can be significantly reduced. Reduce downtime and maintenance costs caused by faults, while extending the service life of filters and equipment, and improving overall economic benefits.

[0050] In one embodiment, the method for obtaining the calibration coefficient is as follows: prepare multiple air purifiers and conduct experiments using filter cartridges with different degrees of blockage; record the initial load condition L0 and the initial overall air flow Q0 of each air purifier when using a new filter cartridge; gradually increase the blockage degree of the filter cartridge, and record the real-time load condition L and the overall air flow Q under different blockage states; clean the data, remove outliers and noise, and ensure the accuracy of the data; calculate the average load condition L and the average overall air flow Q under each blockage degree; and obtain the calibration coefficient k through the known blockage degree D: , according to the experimental data, calculate the actual blocking degree D under each blocking state; for each experimental data point, use the above formula to calculate the value of k; calculate the k values ​​of multiple data points, and take the average value as the final calibration coefficient. The calibration coefficient k is calculated by experimental data to ensure that the coefficient can accurately reflect the actual situation under different blocking degrees. This method eliminates individual differences and random errors through multiple experiments and data averaging, making the calibration coefficient more accurate and reliable. The use of calibration coefficients can improve the accuracy of the filter element blocking degree calculation model, ensure that the predicted blocking degree is consistent with the actual situation, thereby improving the overall performance of the system and the air purification effect. The calibration coefficient acquisition method based on actual experimental data enables system optimization to be based on a solid data foundation. This data-driven optimization method can effectively improve the scientificity and rationality of the system and ensure the implementation effect of the optimization strategy. By conducting experiments at different blocking degrees, the system can adapt to changes in different working conditions and environments, ensuring that the filter element blocking degree can be accurately evaluated under various conditions of use, so that corresponding maintenance measures can be taken in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a three-dimensional diagram of an air purifier;

[0052] Figure 2 This is an exploded view of an air purifier;

[0053] Figure 3 is a perspective view of a housing assembly;

[0054] Figure 4 is a three-dimensional diagram of the filter housing;

[0055] Figure 5 is a three-dimensional diagram of the top shell;

[0056] Figure 6 This is an exploded view of the inner shell assembly;

[0057] Figure 7 is a three-dimensional diagram of the inner shell assembly;

[0058] Figure 8 This is an exploded view of the magnetic cover assembly;

[0059] Fig. 9 It is a flow chart of the filter element replacement control method;

[0060] Fig.10 A schematic diagram of the process for obtaining the overall excess air volume of the fan;

[0061] Fig.11 A schematic diagram of the process of calculating the overall excess air volume based on the flow data of the air inlet, air supply cavity and air outlet;

[0062] Fig.12 A flow chart showing the load condition of the fan is obtained in order to monitor the current change of the fan;

[0063] Fig.13 A first flow chart showing the degree of blockage of the filter element obtained by using the load condition of the fan and the overall air flow rate;

[0064] Fig.14 A second flow chart showing how to obtain the blocking degree of the filter element through the load condition of the fan and the overall air flow rate.

[0065] The corresponding relationship between the reference numerals and the component names is as follows:

[0066] 1 housing assembly, 11 filter housing, 12 rear housing, 13 bottom housing, 14 top housing, 141 top housing body, 142 air guide plate, 101 accommodating cavity, 102 filter hole, 103 air outlet, 104 filter housing slot, 105 panel mounting hole;

[0067] 2 inner shell assembly, 21 front shell, 22 rear cover, 201 filter element accommodating chamber, 202 air supply chamber, 203 air inlet hole;

[0068] 3 filter element;

[0069] 4 fans;

[0070] 5 magnetic cover assembly, 51 cover body, 52 handle, 501 handle receiving slot;

[0071] 6. Control panel;

[0072] 7. Power supply box. DETAILED DESCRIPTION

[0073] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0074] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0075] The air purifier and filter element replacement control method according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0076] Example 1

[0077] like Figures 1 to 8 As shown, this embodiment discloses an air purifier, which includes: an outer shell component 1, the outer shell component 1 is provided with a accommodating chamber 101, a filter hole 102 and an air outlet 103, and the accommodating chamber 101, the filter hole 102 and the air outlet 103 are connected in sequence; an inner shell component 2, the inner shell component 2 is arranged on the outer shell component 1 and is located in the accommodating chamber 101, the inner shell component 2 is provided with a filter element accommodating chamber 201, an air supply chamber 202 and an air inlet 203, the filter hole 102, the filter element The accommodating chamber 201, the air inlet hole 203, the air supply chamber 202 and the air outlet 103 are connected in sequence; the filter element 3, the filter element 3 is arranged on the outer shell component 1 and / or the inner shell component 2, the filter element 3 is located in the filter element accommodating chamber 201, and the filter element 3 is arranged opposite to the filter hole 102; the fan 4, the fan 4 is arranged on the inner shell component 2, the fan 4 is located in the air supply chamber 202, the air inlet side of the fan 4 is connected with the filter element accommodating chamber 201, and the air outlet side of the fan 4 is connected with the air outlet 103.

[0078] The present application discloses an air purifier, which is mainly composed of an outer shell component 1, an inner shell component 2, a filter element 3 and a fan 4. By arranging the filter element 3 in a filter element accommodating chamber 201 provided in the inner shell component 2, the filter element 3 is protected. In daily use of the air purifier, the filter element 3 may be subjected to external collision, extrusion or vibration. If the filter element 3 is directly exposed to the outside, these external forces can easily damage the filter element 3, resulting in a decrease in the filtering performance of the filter element 3 or even complete failure. Placing the filter element 3 in a special accommodating chamber can effectively avoid the direct effect of these external forces and extend the service life of the filter element. The fan 4 is arranged on the inner shell component 2, and the inner shell component 2 is arranged on the outer shell component 1. The outside air is driven by the fan 4, passes through the filter element 3 from the filter hole 102 arranged on the outer shell component 1, and then enters the air supply chamber 202 through the air inlet hole 203 after being filtered by the filter element 3, and finally blown out from the air outlet 103. Firstly, the filter hole 102 in this structure plays a preliminary filtering role, filtering out larger impurity particles in the air first, preventing them from entering the interior of the air purifier and clogging the filter element 3, so that the filtering function of the filter element 3 is greatly reduced. Secondly, the filter element 3 removes some harmful substances, odors or dust from the air to ensure that the air in the user's environment remains clean. Air purifiers can effectively remove inhalable particles in the air. They can also quickly capture and filter larger particles such as dust, pollen, and pet dander. At the same time, air purifiers filter and purify the air, reduce the humidity and nutrient content in the air, and create environmental conditions that are not conducive to the reproduction of microorganisms, thereby inhibiting the growth and reproduction of microorganisms such as bacteria and mold. This is of great significance for preventing indoor items from mold and deterioration, and reducing the occurrence of diseases such as respiratory infections.

[0079] like Figure 1 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further defines: it also includes a magnetic cover assembly 5, the housing assembly 1 is provided with a filter housing groove 104, and the magnetic cover assembly 5 is arranged on the housing assembly 1 and the cover is arranged at the filter housing groove 104. By arranging the magnetic cover assembly 5 in the filter housing groove 104 provided in the housing assembly 1, when the user needs to replace the filter element 3 of the air purifier, he can easily and quickly open the magnetic cover assembly, remove the old filter element and install a new filter element through the characteristics of magnetic adsorption. The user does not need to use tools or perform complicated operations, just a slight pull, and the magnetic cover assembly 5 will separate, which greatly improves the efficiency and convenience of replacing the filter element. At the same time, during the operation of the air purifier, in order to ensure the purification effect, it is necessary to prevent unfiltered air from directly entering the air purifier around the filter element 3. The magnetic cover assembly 5 is tightly installed in the filter housing groove 104, which can form a good seal to prevent air from leaking from the connection between the magnetic cover assembly 5 and the filter housing groove 104, and ensure that all air entering the air purifier can be effectively filtered by the filter element 3.

[0080] like Figure 2 and Figure 8 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the magnetic cover assembly 5 includes a cover body 51 and a handle 52, the cover body 51 is provided with a handle receiving groove 501, and the handle 52 is penetrated on the cover body 51 and limited at the handle receiving groove 501. By setting the handle 52 on the handle receiving groove 501 provided on the cover body 51, and the handle 52 is penetrated on the cover body 51, the user can easily grasp the handle and easily apply force to take out the magnetic cover assembly 5, take out the filter element 3 in the air purifier for cleaning or replacement, ensure that the air purifier can continuously and effectively remove various pollutants in the air, maintain a good purification effect, ensure the cleanliness and health of the indoor air, and timely replace the filter element 3 can reduce the working pressure of the purifier and extend its service life. At the same time, the handle 52 is set in the handle receiving groove 501 to protect the handle 52 to a certain extent, reduce the possibility of being hit by the outside world, and ensure its firmness, thereby extending the service life of the magnetic cover assembly 5.

[0081] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, in addition to the features of the above-mentioned embodiments, the present embodiment further defines that: the housing assembly 1 includes a filter housing 11, a rear housing 12, a bottom housing 13 and a top housing 14; the filter housing 11 and the rear housing 12 are both mounted on the bottom housing 13; the top housing 14 is disposed on the filter housing 11 and the rear housing 12; the filter housing 11, the rear housing 12, the bottom housing 13 and the top housing 14 are enclosed together to form a receiving chamber 101. By mounting the filter housing 11 and the rear housing 12 on the bottom housing 13, and disposing the top housing 14 on the filter housing 11 and the rear housing 12, the housing components are mutually mounted and combined to form a stable overall structure, ensuring that the internal fan 4 and other components can work stably during the operation of the air purifier, reducing vibration, noise and other problems caused by the unstable housing structure, and improving the stability of the structure. This combination of shells can reasonably plan the air entry, filtration and exhaust paths according to the internal structural design, improve the air purification efficiency, and at the same time, when a component of the air purifier fails or is damaged, the corresponding shell part can be disassembled and repaired in a targeted manner, reducing the maintenance cost and difficulty. By designing the filter shell 11 separately and clamping it on the bottom shell, it is convenient for users to open the filter shell and quickly replace the internal filter to ensure the purification effect and performance of the air purifier. Because the filter shell 11, the rear shell 12, the bottom shell 13 and the top shell 14 are jointly enclosed to form the accommodating chamber 101, a closed space is provided for the fan 4 and other components inside the air purifier, which effectively prevents external dust, water vapor, collisions, etc. from damaging these key components, and prolongs the service life and stability of the internal components.

[0082] like Figure 4 As shown, in addition to the features of the above-mentioned embodiment, the present embodiment further defines that: the filter housing 11 is provided with a filter hole 102, the number of the filter holes 102 is multiple, the filter holes 102 are circular, and the multiple filter holes 102 are evenly distributed on the filter housing 11. By providing multiple filter holes 102 on the filter housing 11, and the multiple filter holes 102 are evenly distributed on the filter housing 11, the evenly distributed filter holes 102 can ensure that air enters the interior of the air purifier evenly from all directions. This makes the filtration load of each part of the filter housing 11 more uniform when the air passes through the filter housing 11, improves the overall utilization rate and service life of the filter screen, avoids the problem of premature failure due to local overuse, and the setting of multiple filter holes 102 increases the area and channel of the air intake, so that more air can enter the interior of the purifier for filtering and purification per unit time, thereby improving the purification efficiency and speed of the air purifier, and can purify the indoor air faster. At the same time, the filter hole 102 is set to be circular, so that the resistance of air passing through is relatively small, and the flow is smoother. The small air flow resistance helps to reduce the workload of the fan 4, reduce energy consumption, and reduce the noise generated by the air flow. The circular filter hole 102 has no sharp corners and edges, and impurities such as particulate matter and dust in the air are not easy to accumulate and clog at the filter hole 102 when passing through, which is conducive to keeping the filter hole 102 unobstructed and maintaining a stable air intake flow and purification efficiency.

[0083] like Figure 2 and Figure 5 As shown, in addition to the features of the above-mentioned embodiments, this embodiment further defines: the top shell 14 includes a top shell body 141 and air guide plates 142, the top shell body 141 is arranged on the filter shell 11 and the rear shell 12, the number of the air guide plates 142 is multiple, and the multiple air guide plates 142 are distributed at intervals on the top shell body 141, and air outlets 103 are formed between adjacent air guide plates 142. The top shell 14 is formed by setting the top shell body 141 on the filter shell 11 and the rear shell 12 and setting a plurality of air guides 142 on the top shell body 141. Since the plurality of air guides 142 are arranged at intervals on the top shell body 141 and form an air outlet 103, the purified air can be rectified and guided, and the direction and angle of the air outlet can be controlled to a certain extent, so that the air purifier can deliver the purified air to the required area in a targeted manner, and the airflow can be discharged more regularly and orderly, thereby improving the targetedness and effectiveness of air purification, and at the same time reducing the generation of turbulence and vortices, and avoiding the situation where the air outlet is strong in some areas and weak in some areas, thereby improving the efficiency and stability of the air outlet. Secondly, the regular air outlet 103 helps to reduce the friction and turbulent noise during the air flow, making the air purifier quieter during operation and improving the user experience.

[0084] like Figure 2 , Figure 6 and Figure 7As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the inner shell component 2 includes a front shell 21 and a rear cover 22, the front shell 21 is arranged on the outer shell component 1, the front shell 21 is provided with an air inlet 203, the rear cover 22 is arranged on the front shell 21, and the rear cover 22 and the front shell 21 form an air supply chamber 202, and the air supply chamber 202 is in a turbine shape. By arranging the front shell 21 on the outer shell component 1, providing the air inlet 203 on the front shell 21, and arranging the rear cover 22 on the front shell 21 to form the inner shell component 2 and forming the air supply chamber 202 inside, a stable and specific flow space and path is provided for the air. The formed air supply chamber 202 can play a certain buffering role, so that the pressure and flow rate of the purified air are balanced in the chamber, thereby outputting a relatively stable wind speed and air volume, ensuring that the purified air of the air purifier can be continuously and stably delivered to the surrounding space. At the same time, designing the air supply chamber 202 into a turbine shape helps to make the air flow in the chamber more uniform and smooth, reduce energy loss and waste, improve the energy utilization efficiency of the air purifier, and reduce energy consumption. The structure of the turbine chamber can absorb and block the noise generated by the airflow to a certain extent, reduce the spread of air flow noise, make the air purifier quieter during operation, and enhance the user experience.

[0085] like Figure 6 and Figure 7 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the number of air inlet holes 203 is multiple, the multiple air inlet holes 203 are evenly arranged on the front shell 21, and the multiple air inlet holes 203 are distributed in a ring shape. By providing multiple air inlet holes 203 on the front shell 21, the setting of multiple air inlet holes 203 increases the number of channels and the total area for the purified air to enter the inside of the air purifier, so that more purified air can enter the device per unit time, thereby improving the working efficiency of the air purifier. Since the multiple air inlet holes 203 are evenly and circumferentially arranged on the front shell 21, it can be ensured that the air enters uniformly from all directions of the device, avoiding the problem of uneven air intake caused by the concentrated air entering from only one direction. At the same time, the circumferential uniform air intake method can better promote the circulation of indoor air. The air is sucked into the air purifier from all directions and then discharged, which speeds up the renewal speed of the indoor air, so that the air in the entire space can be purified faster, and the user's experience is guaranteed. The multiple air inlet holes 203 are connected to the air supply cavity 202 so that the purified air can smoothly enter from the air inlet holes 203 and then be sent out through the air supply cavity 202, forming a complete and continuous air flow path to ensure the smooth progress of the air purification process.

[0086] like Figure 2 and Figure 5As shown, in addition to the features of the above-mentioned embodiments, this embodiment is further defined as follows: a control panel 6 is also included, the housing component 1 is provided with a panel mounting hole 105, and the control panel 6 is arranged on the housing component 1 and located at the panel mounting hole 105. By arranging the panel mounting hole 105 on the top shell 14 in the housing component 1 and arranging the control panel 6 at the panel mounting hole 105, the user can conveniently operate and control the device on the outer surface of the air purifier, and can adjust various functional parameters without opening the device housing or performing complicated operations, thereby increasing the convenience of operation. At the same time, through the control panel 6 installed on the surface of the housing, the user can intuitively see the working status of the air purifier, air quality indicators and other information, which is convenient for the user to understand the operation status and air purification effect of the device in real time, so as to make corresponding adjustments and maintenance in time.

[0087] like Figure 2 and Figure 3 As shown, in addition to the features of the above-mentioned embodiment, this embodiment is further defined as follows: it also includes a power supply box 7, which is arranged on the inner shell component 2 and located in the accommodating chamber 101. By arranging the power supply box 7 on the inner shell component 2 and in the accommodating chamber 101, firstly, the space inside the air purifier can be fully utilized to avoid the additional increase in the external volume of the device, so that the structure of the air purifier is more compact and the placement space is saved. At the same time, the direct damage to the power supply box 7 caused by external collision, extrusion, dust, water vapor, etc. can be reduced, the risk of failure of the power supply box 7 is reduced, and its stability and safety are improved. Furthermore, since the power supply box 7 is located in the accommodating chamber 101, the heat generated by the power supply box 7 during operation can be dissipated in time by utilizing the air flow inside the air purifier, so as to prevent the power supply box 7 from being damaged due to overheating, extend the service life of the power supply box 7, ensure the long-term and stable operation of the air purifier, and improve the user's satisfaction.

[0088] like Figures 1 to 8 As shown, in addition to the features of the above-mentioned embodiments, the present embodiment is further defined as follows: it also includes a plurality of flow meters, and the plurality of flow meters are respectively located at the air inlet, the air supply chamber and the air outlet. The flow meter located at the air inlet can accurately measure the air flow entering the fan. The flow meter arranged in the air supply chamber can accurately measure the air flow during the fan processing process. The flow meter at the air outlet measures the outlet flow of the processed air. The distributed flow meter configuration allows real-time monitoring of the flow of air during the entire purification process. The flow data at multiple locations are fed back to the control system to support the implementation of intelligent control strategies.

[0089] Example 2

[0090] like Fig. 9 As shown, this embodiment discloses a filter element replacement control method, and the filter element replacement control method includes the following steps:

[0091] S1. Obtain the overall excess air volume of the fan;

[0092] S2, monitor the current change of the fan and obtain the load condition of the fan;

[0093] S3. Obtain the blocking degree of the filter element through the load condition of the fan and the overall air flow rate;

[0094] S4. When the blocking degree of the filter element exceeds the preset value, it will remind you to replace the filter element.

[0095] By accurately measuring the overall excess air volume of the fan, the air flow processed by the air purifier can be understood in real time. This helps ensure the stable operation of the system under different loads and working conditions. Monitoring the current changes of the fan can accurately reflect the load of the fan. Through the current data, the working status of the fan, including the load size and change trend, can be inferred. The blockage degree of the filter element can be intelligently calculated using the load condition and the overall excess air volume of the fan. By combining the fan load with the excess air volume data through an algorithm or model, the dust accumulation and blockage of the filter element can be accurately evaluated. Set a preset filter element blockage threshold. Once the filter element blockage degree exceeds the preset value, the system will promptly issue a reminder signal to prompt the user or operation and maintenance personnel to replace the filter element. This effectively extends the service life of the air purifier and ensures the continuous and efficient operation of the air purifier. By real-time monitoring and intelligent control of the filter element blockage degree, unnecessary energy waste can be avoided and the energy efficiency ratio of the air purifier can be improved. Timely replacement of the filter element can also maintain the optimal performance of the equipment and ensure the provision of clean and healthy air.

[0096] like Fig.10 As shown, in addition to the features of the above embodiment, this embodiment further defines: the specific steps of step S1 are as follows:

[0097] S11, collecting flow data of the air inlet, air supply cavity and air outlet of the fan;

[0098] S12, filtering the collected flow data to remove noise and mutation data in the measurement to ensure smooth and reliable flow data;

[0099] S13, performing consistency check on the flow data of the air inlet, air supply cavity and air outlet to verify the reliability of the data;

[0100] S14, calculating the overall air flow rate according to the flow data of the air inlet, the air supply cavity and the air outlet;

[0101] S15. Regularly analyze the collected flow data, evaluate the stability of the system and the accuracy of the measurement, identify potential deviations or anomalies, and make timely adjustments and corrections.

[0102] By collecting the flow data of the air inlet, air supply cavity and air outlet of the fan, the system can monitor and record the flow of air in different parts in real time, so as to accurately grasp the operating status of the entire system. The collected flow data is filtered to remove noise and mutation data in the measurement to ensure smooth and reliable flow data. This helps to avoid data fluctuations caused by sensor errors or environmental changes and improve the accuracy and stability of the data. The flow data of the air inlet, air supply cavity and air outlet are checked for consistency to verify the reliability and accuracy of the data. This ensures that the data collected by the system at each measurement point is consistent and reliable, providing a reliable basis for subsequent data analysis and calculation. According to the flow data of the air inlet, air supply cavity and air outlet, the overall air flow is calculated by weighted average method. The flow data collected at different locations are weighted using weights to ensure that the contribution of the flow at different locations to the overall air flow is reasonably distributed according to their importance, so as to accurately calculate the total air flow handled by the system. The collected flow data is analyzed regularly to evaluate the stability of the system and the accuracy of the measurement. By identifying possible deviations or abnormal situations, the system can make timely adjustments and corrections to ensure that the air purifier continues to operate stably and efficiently.

[0103] like Fig.11 As shown, in addition to the features of the above embodiment, this embodiment further defines: the specific steps of step S14 are as follows:

[0104] S141, obtaining weights of traffic data collected at different locations;

[0105] S142, calculating the overall excess air volume by a weighted average method;

[0106] S143. The formula for calculating the overall excess air volume by weighted average method is as follows:

[0107] Qoverall=Winlet·Qinlet+Wduct·Qduct+Woutlet·Qoutlet

[0108] Among them, Qoverall is the overall air volume, Qinlet is the flow data of the air inlet, Qduct is the flow data of the air supply cavity, Qoutlet is the flow data of the air outlet, Winlet is the weight of the air inlet, Wduct is the weight of the air supply cavity, and Woutlet is the weight of the air outlet.

[0109] By using the weighted average method to calculate the overall airflow, it is ensured that the flow data collected at different locations are reasonably weighted according to their importance. The weights of the flow data collected at different locations can be determined based on factors such as the location of the flow sensor, the length and complexity of the flow path. Reasonable weight distribution can more accurately calculate the overall airflow, improve the credibility of the data and the stability of the system. By continuously monitoring the overall airflow, the system can provide real-time feedback on the current air treatment efficiency. By regularly analyzing and evaluating the overall airflow data, the possibility of filter blockage or other problems can be predicted, and measures can be taken in advance to avoid equipment failure or performance degradation, thereby improving the reliability and durability of the air purifier.

[0110] In addition to the features of the above-mentioned embodiment, the present embodiment further defines: The specific steps of step S141 are as follows: Through experiments or field tests, collect flow data at different locations, analyze the actual contribution of each location under different working conditions, and obtain weight coefficients based on the actual data so that it can accurately reflect the actual situation. The flow data at different locations collected through experiments or field tests can accurately reflect the actual contribution of each location to the overall air flow under different working conditions. This method of determining weight coefficients based on experimental data enables the system to adjust and optimize the weighted calculation of flow data.

[0111] like Fig.12 As shown, in addition to the features of the above embodiment, this embodiment further defines: the specific steps of step S2 are as follows:

[0112] S21. Configure a current sensor to collect current data during the operation of the fan in real time;

[0113] S22, filtering the data obtained from the current sensor to remove possible noise and interference to obtain a stable and reliable current signal;

[0114] S23. Evaluate the load condition based on the current size. The expression is: , where I is the current of the fan measured in real time, Imin is the minimum allowable value of the current, corresponding to the minimum load or no-load state of the fan, and Irated is the maximum allowable value of the current, corresponding to the rated load state of the fan.

[0115] Configuring a current sensor can collect current data in real time during the operation of the fan. This can directly reflect the current working status and load conditions of the fan, and provide real-time monitoring and feedback for the system operation status. The data obtained from the current sensor is filtered to remove possible noise and interference to obtain a smooth and reliable current signal. This ensures that the system can accurately capture and analyze current changes in complex environments and different working conditions, and improves the accuracy and stability of the data. Based on the real-time current data to evaluate the load conditions, the system can monitor in real time whether there are abnormal current values ​​(exceeding or falling below the preset range), and issue alarms or make automatic adjustments in a timely manner. This helps prevent equipment overload or underutilization and optimize equipment operation and maintenance strategies.

[0116] like Fig.13 As shown, in addition to the features of the above embodiments, this embodiment further defines:

[0117] S31. Use the comprehensive changes in air volume and load conditions to calculate the blocking degree of the filter element. The blocking degree formula is as follows: , where: D is the degree of filter element blocking, k is the calibration coefficient, L is the fan load, L0 is the fan load when the system is installed, Q0 is the overall excess air volume at the initial stage of system installation, and Q is the real-time overall excess air volume;

[0118] S32. Using the load condition L and the overall air flow rate Q acquired in real time, the above formula is applied to calculate the blocking degree D of the filter element in real time.

[0119] By comprehensively considering the changes in the air volume and fan load, the blockage degree of the filter element can be calculated in real time. This formula can reflect the actual blockage of the filter element during operation, helping to timely identify the working status and health of the filter element. The calibration coefficient k plays an adjustment and calibration role in the formula, and can be adjusted according to the actual situation of the specific system and environmental changes. This makes the calculation of the blockage degree more accurate and reliable, in line with actual operational needs. : Based on the blockage degree D calculated in real time, a preventive maintenance plan can be formulated to regularly clean or replace the filter element to maintain efficient operation and long-term stability of the system. This helps to reduce maintenance costs, extend equipment life, and ensure that the air purification effect continues to meet standards.

[0120] like Fig.14 As shown, in addition to the features of the above embodiment, this embodiment further defines: after step S32, there are the following steps:

[0121] S33. Regularly analyze historical data, identify the causes of filter plugging problems, and develop continuous optimization strategies;

[0122] S34. Optimize the filter element blocking degree calculation model based on actual operation data to improve prediction accuracy;

[0123] S35. Through intelligent analysis, possible faults and problems can be identified in advance, and preventive maintenance measures can be taken to reduce downtime and maintenance costs.

[0124] By regularly analyzing historical data on the degree of filter plugging, the causes of plugging problems can be identified and continuous optimization strategies can be developed. This data-driven improvement approach can continuously improve system performance and filter life, effectively avoiding recurring problems. Based on actual operating data, the calculation model of the degree of filter plugging can be continuously optimized to improve the accuracy of predictions. This ensures that the system can more accurately assess the degree of filter plugging, so that timely measures can be taken to avoid equipment performance degradation or damage. Through intelligent analysis, possible faults and problems can be identified in advance, and preventive maintenance measures can be taken. This can effectively reduce downtime and maintenance costs, improve the operational reliability and stability of the system, and ensure the continuous and efficient operation of the equipment. Through optimization strategies and preventive maintenance measures, operating costs can be significantly reduced. Reduce downtime and maintenance costs caused by faults, while extending the service life of filters and equipment, and improving overall economic benefits.

[0125] In addition to the features of the above embodiments, the present embodiment further defines: the method for obtaining the calibration coefficient is as follows: prepare multiple air purifiers and conduct experiments using filter cartridges with different degrees of blockage; record the initial load condition L0 and the initial overall air flow Q0 of each air purifier when using a new filter cartridge; gradually increase the blockage degree of the filter cartridge, and record the real-time load condition L and the overall air flow Q under different blockage states; clean the data, remove outliers and noise, and ensure the accuracy of the data; calculate the average load condition L and the average overall air flow Q under each blockage degree; obtain the calibration coefficient k through the known blockage degree D: , according to the experimental data, calculate the actual blocking degree D under each blocking state; for each experimental data point, use the above formula to calculate the value of k; calculate the k values ​​of multiple data points, and take the average value as the final calibration coefficient. The calibration coefficient k is calculated by experimental data to ensure that the coefficient can accurately reflect the actual situation under different blocking degrees. This method eliminates individual differences and random errors through multiple experiments and data averaging, making the calibration coefficient more accurate and reliable. The use of calibration coefficients can improve the accuracy of the filter element blocking degree calculation model, ensure that the predicted blocking degree is consistent with the actual situation, thereby improving the overall performance of the system and the air purification effect. The calibration coefficient acquisition method based on actual experimental data enables system optimization to be based on a solid data foundation. This data-driven optimization method can effectively improve the scientificity and rationality of the system and ensure the implementation effect of the optimization strategy. By conducting experiments at different blocking degrees, the system can adapt to changes in different working conditions and environments, ensuring that the filter element blocking degree can be accurately evaluated under various conditions of use, so that corresponding maintenance measures can be taken in a timely manner.

[0126] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A filter element replacement control method, characterized in that: The filter element replacement control method comprises the following steps: S1. Obtain the overall excess air volume of the fan; S2, monitor the current change of the fan and obtain the load condition of the fan; S3. Obtain the blocking degree of the filter element through the load condition of the fan and the overall air flow rate; The specific steps of step S3 are as follows: S31. Use the comprehensive changes in air volume and load conditions to calculate the blocking degree of the filter element. The blocking degree formula is as follows: , where: D is the degree of filter element blocking, k is the calibration coefficient, L is the fan load, L0 is the fan load when the system is installed, Q0 is the overall excess air volume at the initial stage of system installation, and Q is the real-time overall excess air volume; S32, using the load condition L and the overall air flow rate Q obtained in real time, applying the above formula to calculate the blocking degree D of the filter element in real time; S33. Regularly analyze historical data, identify the causes of filter plugging problems, and develop continuous optimization strategies; S34. Optimize the filter element blocking degree calculation model based on actual operation data to improve prediction accuracy; S35. Through intelligent analysis, possible faults and problems can be identified in advance, and preventive maintenance measures can be taken to reduce downtime and maintenance costs; S4: When the blocking degree of the filter element exceeds the preset value, it will remind you to replace the filter element; The specific steps of step S1 are as follows: S11, collecting flow data of the air inlet, air supply cavity and air outlet of the fan; S12, filtering the collected flow data to remove noise and mutation data in the measurement to ensure smooth and reliable flow data; S13, performing consistency check on the flow data of the air inlet, air supply cavity and air outlet to verify the reliability of the data; S14, calculating the overall air flow rate according to the flow data of the air inlet, the air supply cavity and the air outlet; S15. Regularly analyze the collected flow data, evaluate the stability of the system and the accuracy of the measurement, identify potential deviations or anomalies, and make timely adjustments and corrections; The specific steps of step S14 are as follows: S141, obtaining weights of traffic data collected at different locations; S142, calculating the overall excess air volume by a weighted average method; S143. The formula for calculating the overall excess air volume by weighted average method is as follows: Qoverall=Winlet·Qinlet+Wduct·Qduct+Woutlet·Qoutlet Among them, Qoverall is the overall air volume, Qinlet is the flow data of the air inlet, Qduct is the flow data of the air supply cavity, Qoutlet is the flow data of the air outlet, Winlet is the weight of the air inlet, Wduct is the weight of the air supply cavity, and Woutlet is the weight of the air outlet; The specific steps of step S2 are as follows: S21. Configure a current sensor to collect current data during the operation of the fan in real time; S22, filtering the data obtained from the current sensor to remove possible noise and interference to obtain a stable and reliable current signal; S23. Evaluate the load condition based on the current size. The expression is: , where I is the current of the fan measured in real time, Imin is the minimum allowable value of the current, corresponding to the minimum load or no-load state of the fan, and Irated is the maximum allowable value of the current, corresponding to the rated load state of the fan; The method for obtaining the calibration coefficient is as follows: Prepare multiple air purifiers and conduct experiments using filters with different degrees of blockage; Record the initial load condition L0 and initial overall airflow Q0 of each air purifier when using a new filter element; Gradually increase the blocking degree of the filter element and record the real-time load L and overall air flow Q under different blocking states; Clean the data, remove outliers and noise, and ensure data accuracy; Calculate the average load condition L and average overall excess air volume Q at each blocking level; The calibration factor k is obtained by using the known blocking degree D: , based on the experimental data, calculate the actual blocking degree D under each blocking state; For each experimental data point, calculate the value of k using the above formula; Calculate the k value of multiple data points and take the average value as the final calibration coefficient.

2. An air purifier, used to execute the filter element replacement control method according to claim 1, characterized in that: The air purifier comprises: A housing component (1), the housing component (1) being provided with a receiving cavity (101), a filter hole (102) and an air outlet (103), the receiving cavity (101), the filter hole (102) and the air outlet (103) being connected in sequence; an inner shell component (2), the inner shell component (2) being arranged on the outer shell component (1) and located in the accommodating cavity (101), the inner shell component (2) being provided with a filter element accommodating cavity (201), an air supply cavity (202) and an air inlet hole (203), the filter hole (102), the filter element accommodating cavity (201), the air inlet hole (203), the air supply cavity (202) and the air outlet (103) being connected in sequence; A filter element (3), the filter element (3) being arranged on the outer shell component (1) and / or the inner shell component (2), the filter element (3) being located in the filter element accommodating cavity (201), and the filter element (3) being arranged opposite to the filter hole (102); a fan (4), the fan (4) being arranged on the inner shell assembly (2), the fan (4) being located in the air supply cavity (202), the air inlet side of the fan (4) being in communication with the filter element accommodating cavity (201), and the air outlet side of the fan (4) being in communication with the air outlet (103); A plurality of flow meters, wherein the plurality of flow meters are respectively located at the air inlet (203), the air supply cavity (202) and the air outlet (103); The inner shell component (2) comprises a front shell (21) and a rear cover (22); the front shell (21) is arranged on the outer shell component (1); the front shell (21) is provided with the air inlet hole (203); the rear cover (22) is arranged on the front shell (21); the rear cover (22) and the front shell (21) form the air supply cavity (202); the air supply cavity (202) is in a turbine shape; there are a plurality of air inlet holes (203); the plurality of air inlet holes (203) are evenly arranged on the front shell (21); and the plurality of air inlet holes (203) are distributed in a ring shape.

3. The air purifier according to claim 2, characterized in that: It also comprises a magnetic cover assembly (5), the housing assembly (1) is provided with a filter housing groove (104), and the magnetic cover assembly (5) is arranged on the housing assembly (1) and covers the filter housing groove (104).

4. The air purifier according to claim 2, characterized in that: The housing assembly (1) comprises a filter housing (11), a rear housing (12), a bottom housing (13) and a top housing (14); the filter housing (11) and the rear housing (12) are both mounted on the bottom housing (13); the top housing (14) is arranged on the filter housing (11) and the rear housing (12); the filter housing (11), the rear housing (12), the bottom housing (13) and the top housing (14) are collectively enclosed to form the accommodating cavity (101).

5. The air purifier according to claim 4, characterized in that: The filter housing (11) is provided with the filter holes (102), the number of the filter holes (102) is multiple, the filter holes (102) are circular, and the multiple filter holes (102) are evenly distributed on the filter housing (11); And / or the top shell (14) comprises a top shell body (141) and air guide plates (142), the top shell body (141) being arranged on the filter shell (11) and the rear shell (12), the number of the air guide plates (142) being multiple, the multiple air guide plates (142) being distributed at intervals on the top shell body (141), and the air outlet (103) being formed between adjacent air guide plates (142).

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