Core replacement control method for filter element of water purifier

Abstract

The embodiment of the invention discloses a core changing control method for a filter core of a water purifier, and relates to the technical field of water purifiers, the method comprises the following steps: obtaining current raw water concentration data and at least one period operation data corresponding to the filter core of the water purifier, the period operation data comprising booster pump working time information and corresponding real-time raw water temperature information; according to the current raw water concentration data, determining corrected filter element service life information corresponding to the filter element of the water purifier, and according to the current raw water concentration data and the raw water temperature information, determining corrected water production flow velocity information corresponding to the operation data of each period; and based on each piece of corrected water production flow velocity information and the booster pump working time information, determining accumulated water production information corresponding to the filter element of the water purifier, so as to prompt the filter element of the water purifier to change the filter element based on the corrected filter element service life information and the accumulated water production information. The actual use condition of the filter element can be evaluated more accurately, and the situation that the filter element is prompted to be replaced too early or too late is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, and in particular to a filter element replacement control method for a water purifier. Background Art

[0002] In the field of water purification equipment, in order to ensure the safety and purity of water quality, regular replacement of filter elements is a key link in maintaining equipment performance and user health. When estimating the service life of the filter element, the existing water purification equipment mainly relies on the working time of the booster pump to accumulate the water flow, ignoring the actual impact of key factors such as water quality, water temperature and water inlet pressure on the performance of the filter element. The quality of water directly affects the water flux of the filter element. In areas with good water quality, the water flux of the filter element will increase. On the contrary, in areas with poor water quality, the water flux of the filter element will decrease. Seasonal changes in water temperature will cause significant fluctuations in water flux. When the water temperature is high in summer, the water flux of the filter element will increase, and when the water temperature drops in winter, the water flux of the filter element will decrease. Therefore, the estimation method that relies on the working time of the booster pump to accumulate the water flow cannot accurately reflect the actual loss of the filter element under different use environments, and it is easy to lead to the early or delayed reminder of filter element replacement. Replacing the filter element in advance will increase the economic burden of users and cause waste of resources; while delayed replacement may affect water quality safety due to the decline in filter element performance and reduce user experience.

[0003] Therefore, the traditional filter element replacement reminder relies on the working time of the booster pump to accumulate the water flow to estimate the filter element life. It cannot accurately reflect the actual wear of the filter element under different usage environments, and it is easy to cause the filter element replacement reminder to be advanced or delayed, affecting the user experience. Summary of the invention

[0004] One or more embodiments of the present specification provide a filter cartridge replacement control method for a water purifier, which is used to solve the following technical problems: the traditional filter cartridge replacement reminder relies on the working time of the booster pump to accumulate the water flow to estimate the filter cartridge life, which cannot accurately reflect the actual wear of the filter cartridge in different usage environments, and can easily lead to early or delayed filter cartridge replacement reminders, affecting user experience.

[0005] One or more embodiments of this specification adopt the following technical solutions:

[0006] One or more embodiments of the present specification provide a filter cartridge replacement control method for a water purifier, the method comprising: obtaining current raw water concentration data and at least one periodic operation data corresponding to the water purifier filter cartridge, wherein the periodic operation data comprises booster pump working time information and corresponding real-time raw water temperature information; determining the corrected filter cartridge life information corresponding to the water purifier filter cartridge through the current raw water concentration data, and determining the corrected water production flow rate information corresponding to each of the periodic operation data according to the current raw water concentration data and the raw water temperature information; determining the cumulative water production information corresponding to the water purifier filter cartridge based on each of the corrected water production flow rate information and the booster pump working time information, so as to provide a filter cartridge replacement prompt for the water purifier based on the corrected filter cartridge life information and the cumulative water production information.

[0007] Furthermore, the corrected filter element life information corresponding to the water purifier filter element is determined through the current raw water concentration data, specifically including: determining the standard filter element life information of the water purifier filter element; determining the corrected filter element life information corresponding to the water purifier filter element through the current raw water concentration data and the standard filter element life information and utilizing a preset filter element life correction model.

[0008] Furthermore, through the current raw water concentration data and the standard filter element life information, a preset filter element life correction model is utilized to determine the corrected filter element life information corresponding to the water purifier filter element, specifically including: determining the current correction ratio corresponding to the filter element life correction model through the current raw water concentration data; correcting the standard filter element life information according to the current correction ratio to determine the corrected filter element life information corresponding to the water purifier filter element.

[0009] Furthermore, based on the current raw water concentration data and the raw water temperature information, the corrected water production flow rate information corresponding to each of the periodic operation data is determined, specifically including: determining the filter element structure data of the water purifier filter element, and determining the water production flow rate mapping table corresponding to the water purifier filter element based on the filter element structure data; based on the current raw water concentration data and the raw water temperature information, matching is performed in the water production flow rate mapping table to determine the corrected water production flow rate information corresponding to each of the periodic operation data.

[0010] Furthermore, the method also includes: performing a water production flux test with multiple influencing indicators on each filter element to collect the filtering parameters of the filter element corresponding to each water production flux test, wherein the filtering parameters include flow rate parameters and filtering performance parameters, and the influencing indicators include any one or more of raw water concentration indicators and raw water temperature indicators; determining the filter element life correction model and water production flow rate mapping table corresponding to each filter element through the filtering parameters of each filter element and the test indicator data of the water production flux test.

[0011] Furthermore, the filter element life correction model and the water production flow rate mapping table corresponding to each filter element are determined through the filtering parameters of each filter element and the test index data of the water production flux test, which specifically includes: determining a plurality of specified filtering performance parameters that meet the preset performance reference data through the filtering performance parameters of each filter element, so as to determine the specified test index data and the specified water production flow rate corresponding to each specified filtering performance parameter, wherein the specified test index data includes a specified raw water temperature and a specified raw water concentration; constructing a water production flow rate mapping table for each filter element according to the specified test index data and the specified water production flow rate; determining the actual total water production of each filter element under different raw water concentrations through the plurality of specified filtering performance parameters; determining the life correction ratio under different raw water concentrations based on the actual total water production of the filter element and the theoretical total water production of the filter element, so as to construct the filter element life correction model.

[0012] Furthermore, the water production flux of each filter element is tested for multiple influencing indicators, specifically including: at a specified raw water concentration, the water production flux of each filter element is tested at different raw water temperatures; at a specified raw water temperature, the water production flux of each filter element is tested at different raw water concentrations.

[0013] Furthermore, the filtering parameters of the filter element corresponding to each of the water production flux tests are collected, specifically including: collecting the actual water production flow rate information of each of the filter elements in each of the water production flux tests, and when the cumulative water production test threshold corresponding to each of the filter elements is met, collecting the filtering performance parameters of each of the filter elements according to the preset inspection cycle, wherein the filtering performance parameters include any one or more of the desalination rate, spiked residual chlorine, residual chlorine after the filter element and residual chlorine removal rate.

[0014] Furthermore, based on each of the corrected water production flow rate information and the boost pump working time information, the cumulative water production information corresponding to the water purifier filter element is determined, specifically including: based on each of the corrected water production flow rate information and the boost pump working time information, the actual water production information corresponding to each of the periodic operation data is determined; through the actual water production information corresponding to each of the periodic operation data, the cumulative water production information corresponding to the water purifier filter element is determined.

[0015] Furthermore, based on the corrected filter cartridge life information and the cumulative water production information, a filter cartridge replacement prompt is given to the water purifier, specifically including: determining the average water production information corresponding to the water purifier filter cartridge through each corrected water production flow rate information and the booster pump working time information; determining the filter cartridge water production threshold corresponding to the corrected filter cartridge life information based on the average water production information and the corrected filter cartridge life information; when the cumulative water production information exceeds the filter cartridge water production threshold, determining that the water purifier filter cartridge is in a replacement state to trigger the filter cartridge replacement prompt.

[0016] At least one of the above-mentioned technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects: through the above-mentioned technical solutions, the current raw water concentration data and periodic operation data (including the working time of the booster pump and the real-time raw water temperature) can be obtained in real time, so as to more accurately evaluate the actual use of the filter element, avoid prompting to replace the filter element too early or too late, and ensure that the filter element is replaced in time when it is close to its design life, so as to maintain the best water purification effect of the water purifier; by considering the influence of raw water concentration and temperature on the performance of the filter element, the replacement standard of the filter element can be set more scientifically, and unnecessary replacement can be avoided before the performance of the filter element has not obviously declined, thereby extending the service life of the filter element and reducing the cost of use; accurate core replacement prompts can ensure that users are reminded before the performance of the filter element declines, avoid the decline in water purification effect due to aging of the filter element, thereby improving the user's drinking water experience, reducing unnecessary replacement operations and reducing the user's maintenance burden; by reasonably controlling the replacement timing of the filter element, waste generated by frequent replacement of the filter element can be reduced, which is in line with the concept of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. In the drawings:

[0018] Figure 1 A flow chart of a filter element replacement control method for a water purifier provided in an embodiment of this specification. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0020] The embodiments of this specification provide a filter cartridge replacement control method for a water purifier. It should be noted that the execution subject in the embodiments of this specification can be a server or any device with data processing capabilities. Figure 1 A flow chart of a method for controlling the replacement of a filter element of a water purifier provided in an embodiment of this specification, such as Figure 1 As shown, it mainly includes the following steps:

[0021] Step S101, obtaining current raw water concentration data and at least one cycle operation data corresponding to the water purifier filter element.

[0022] The periodic operation data includes the booster pump working time information and the corresponding real-time raw water temperature information.

[0023] In one embodiment of the present specification, when a user uses a water purifier, the current raw water concentration data in the current working environment of the water purifier filter element of the water purifier is obtained. There are multiple ways to obtain the current raw water concentration data. One is to detect and store it when it is powered on for the first time, and the other is to detect it multiple times.

[0024] In the multiple detection method, the inlet water quality can be detected by the built-in TDS sensor, and real-time detection can be performed each time the water purification is running to obtain the current raw water concentration data corresponding to the filter element. The built-in TDS sensor can detect the raw water concentration in real time each time the water purification is running, which can ensure that users are aware of the current water quality at any time and respond immediately to changes in water quality. Generally, the water quality in a region does not differ much, so during the continuous operation of the water purifier, the raw water concentration of the filter element does not change much. Therefore, a periodic detection method can also be set. Given that the water quality in the same region is relatively stable, setting up periodic detection can reduce the workload of the sensor and extend its service life, while still maintaining monitoring of water quality changes.

[0025] In the method of detecting and storing at the first power-on, if the user moves across regions and the water purifier is used across regions, the raw water concentration will deviate. To address this issue, an automatic detection process for the raw water concentration can be set up to adapt to the drastic changes in water quality in the water purifier equipment. Each time the machine is powered on, the TDS sensor is automatically triggered to collect the raw water concentration detection process. For the situation where users move across regions, the function of automatically detecting the raw water concentration on power-on is set to quickly adapt to changes in water quality in the new environment, ensure that the water purifier can work effectively in the new environment, and ensure the safety of users' water use.

[0026] The replacement of the filter element of the water purifier is related to the water purification process of the water purifier. Therefore, it is also necessary to obtain each water purification process during the use of the filter element of the water purifier. Defining a water purification process as an operation cycle helps to accurately record and analyze the use of the water purifier. Obtain the cycle operation data corresponding to each operation cycle. Each cycle operation data includes the working time information of the booster pump in each operation cycle and the corresponding real-time raw water temperature information in the operation cycle.

[0027] Step S102, determine the corrected filter life information corresponding to the water purifier filter element through the current raw water concentration data, and determine the corrected water production flow rate information corresponding to each cycle operation data according to the current raw water concentration data and raw water temperature information.

[0028] In actual application scenarios, if external factors (such as raw water concentration, temperature, frequency of use, etc.) are not considered, the service life of the filter element is mainly affected by its own structure and the selected filter element filter mesh material, precision and other factors. Therefore, when the structural design of the water purifier's filter element and the filter mesh selection are finalized, without considering external factors, its filtration life under a certain water quality is relatively fixed. However, due to areas with better water quality, the water production flux of the same selected filter element will increase. On the contrary, if it is in areas with poor water quality, the water production flux of the same selected filter element will decrease. In other words, there are differences in the service life of the filter element under different water qualities. The corrected filter element life information corresponding to the water purifier filter element is determined by the current raw water concentration data of the current water purifier filter element.

[0029] In addition, when the raw water concentration is high, that is, the water contains more impurities, particulate matter, etc., these impurities may be intercepted when passing through the filter element, resulting in clogging of the filter element or a decrease in filtration efficiency, thereby affecting the water production flow rate; on the contrary, when the raw water concentration is low, the filtration burden of the filter element is reduced, and the water production flow rate is relatively fast. Generally speaking, at higher water temperatures, the viscosity of water decreases and the fluidity increases, which is conducive to the flow of water through the filter element, thereby increasing the water production flow rate; at lower water temperatures, the viscosity of water increases and the fluidity decreases, which may slow down the speed of water flowing through the filter element, resulting in a decrease in the water production flow rate. For water purifiers using RO (reverse osmosis) technology, the water production rate of the RO membrane is particularly closely related to temperature. The filtration process of the RO membrane requires a certain amount of energy to overcome the osmotic pressure of water, and temperature is one of the important factors affecting the movement speed of water molecules. Therefore, the water production rate of the RO membrane increases with increasing temperature and decreases with decreasing temperature. That is to say, affected by the raw water concentration and raw water temperature, the water production flow rate corresponding to the water purifier filter element is different. Therefore, according to the current raw water concentration data and raw water temperature information, the corrected water production flow rate information corresponding to each cycle operation data is determined.

[0030] The corrected filter element life information corresponding to the water purifier filter element is determined through the current raw water concentration data, specifically including: determining the standard filter element life information of the water purifier filter element; determining the corrected filter element life information corresponding to the water purifier filter element through the current raw water concentration data and the standard filter element life information and utilizing a preset filter element life correction model.

[0031] In one embodiment of the present specification, first, the standard filter cartridge life information of the water purifier filter is determined. The standard filter cartridge life information here is usually obtained by testing under laboratory conditions using standard water quality (such as water within a certain range of TDS value, hardness, pH value, etc.), based on the expected life of the filter cartridge under ideal or average conditions of use, to guide users or manufacturers to understand the basic performance of the filter cartridge. The standard filter cartridge life information can be expressed in units of processed water volume (such as liters), and is usually provided in the product manual, technical specification sheet or official website. Through the current raw water concentration data and the standard filter cartridge life information, the preset filter cartridge life correction model is used to determine the corrected filter cartridge life information corresponding to the water purifier filter cartridge.

[0032] Through the current raw water concentration data and the standard filter element life information, the preset filter element life correction model is used to determine the corrected filter element life information corresponding to the water purifier filter element, specifically including: through the current raw water concentration data, determining the current correction ratio corresponding to the filter element life correction model; according to the current correction ratio, correcting the standard filter element life information to determine the corrected filter element life information corresponding to the water purifier filter element.

[0033] In one embodiment of the present specification, after selecting the filter element, during the design process of the water purification device, the influence of the raw water concentration on the use of the filter element is analyzed to construct a filter element life correction model, which is preset in the water purification device. Through the current raw water concentration data, the corresponding TDS gear is matched, and through the TDS gear, the current correction ratio corresponding to the filter element life correction model is determined. It should be noted that water quality sampling is carried out on the water quality of each region to determine the TDS (mg / L) range and proportion of the water quality of each region, and the following results are obtained: the proportion of TDS <= 150 is 32%, the proportion of 150 < TDS <= 250 is 32%, the proportion of 250 < TDS <= 350 is 14%, the proportion of 350 < TDS <= 450 is 6%, the proportion of 450 < TDS <= 550 is 8%, and the proportion of 550 < TDS <= 550 is 8%. Therefore, TDS is divided into the following gears according to the distribution proportion: 0 < TDS <= 150, 150 < TDS <= 300, 300 < TDS <= 550, and 550 < TDS. Among them, the gear corresponding to 300 < TDS <= 550 is the reference gear. Through the current raw water concentration data, the current TDS gear to which the operation of the water purifier filter element belongs is matched, and the current correction ratio corresponding to the current TDS gear is determined. Using the current correction ratio, the standard filter element life information is corrected to obtain the corrected filter element life information. For example, if the current correction ratio is +20%, the corresponding corrected filter element life information is the standard filter element life *

[0034] (1 + 20%), if the current correction ratio is -10%, the corresponding corrected filter element life information is the standard filter element life * (1 - 10%).

[0035] By adjusting the filter element life according to the raw water TDS value, it can be ensured that the filter element operates under the conditions most suitable for its working environment. For water with a low TDS value, the filter element may not need to be replaced frequently, thus extending its actual service life; for water with a high TDS value, it can give an early warning of the filter element replacement requirement, avoid damage to the filter element due to overuse or affect the water quality. Precise filter element life correction can reduce unnecessary filter element replacements, thus saving the user's economic cost; the replacement time of the filter element can be reasonably arranged according to the corrected filter element life information, avoiding the inconvenience caused by premature or late replacement of the filter element, and the personalized service experience can improve the user's satisfaction.

[0036] According to the current raw water concentration data and the raw water temperature information, the corrected water production flow rate information corresponding to each cycle operation data is determined, specifically including: determining the filter element structure data of the water purifier filter element, and based on the filter element structure data, determining the water production flow rate mapping table corresponding to the water purifier filter element; based on the current raw water concentration data and the raw water temperature information, matching in the water production flow rate mapping table to determine the corrected water production flow rate information corresponding to each cycle operation data.

[0037] In one embodiment of the present specification, the filter element structure data of the water purifier filter element is determined, and the filter element structure data here is used to distinguish the filter element specifications of the water purifier filter element. According to the filter element specifications of the water purifier filter element, the water production flow rate mapping table corresponding to the water purifier filter element is matched in a variety of filter elements. The water production flow rate mapping table here includes water production flow rate information at different temperatures and different TDS gears. Through the current raw water concentration data and the raw water temperature information, matching is performed in the water production flow rate mapping table to determine the corrected water production flow rate information corresponding to each cycle operation data. It should be noted that since the raw water concentration data may change according to the user's change of use area, the raw water temperature will change according to the season of use, and the current raw water concentration and the current raw water temperature can be collected once in each operation cycle to match the corrected water production flow rate information corresponding to each operation cycle.

[0038] The following table is a table of water production flow rates corresponding to a 1300G filter element and a 1000G filter element provided in the embodiments of this specification. As shown in the following table, there is a difference in water production flow rate under the 1300G filter element and under the 1000G filter element.

[0039]

[0040] According to the table above, when the raw water TDS remains unchanged, when the temperature is 10℃, the flow rate is 1.373L / min, and when the temperature is 20℃, the flow rate is 2.280L / min. The flow rate values ​​of the two temperature ranges are quite different. The accuracy of the filter element calculation can be improved by averaging the flow rate at the intermediate temperature. For example, when the current temperature is 15℃, the current flow rate is 1.373+{(2.280-1.373) / 10}*5=1.827L / min.

[0041] By collecting the raw water concentration and temperature information in real time and matching them in the water flow rate mapping table, it can ensure that the water flow rate of the water purifier is accurate in each operation cycle, which helps to improve water purification efficiency and reduce resource waste or water quality problems caused by improper flow rate. The water flow rate at different TDS gears and temperatures may be different. Through precise matching, it can ensure that the water purifier can maintain stable water quality under different water quality and temperature conditions.

[0042] Step S103, based on each corrected water production flow rate information and booster pump working time information, determine the cumulative water production information corresponding to the water purifier filter element, and provide a filter replacement prompt for the water purifier filter element based on the corrected filter element life information and the cumulative water production information.

[0043] Based on each corrected water production flow rate information and the boost pump working time information, the cumulative water production information corresponding to the water purifier filter element is determined, specifically including: based on each corrected water production flow rate information and the boost pump working time information, the actual water production information corresponding to each cycle operation data is determined; through the actual water production information corresponding to each cycle operation data, the cumulative water production information corresponding to the water purifier filter element is determined.

[0044] In one embodiment of the present specification, the actual water production information corresponding to each cycle operation data is determined by correcting the water production flow rate information and the booster pump working time information in the manner of correcting the water production flow rate × the booster pump working time × the unit time conversion coefficient. The unit time conversion coefficient is used to convert the time unit (such as seconds) into the time basis (such as minutes or hours) of the water production. In addition to the time conversion, the possible flow unit conversion can also be considered. The actual water production information corresponding to each operation cycle is superimposed to obtain the cumulative water production information corresponding to the water purifier filter element. It is also possible to initialize a variable of cumulative water production to 0 when the filter element starts to be used. Each water purification process corresponds to an operation cycle. After the actual water production information of this operation cycle is calculated at the end of this operation cycle, it is superimposed on the variable corresponding to the cumulative water production to determine the cumulative water production information corresponding to the water purifier filter element. The actual water production and cumulative water production of each operation cycle are stored in the internal memory of the water purifier or on the cloud server for subsequent query and analysis. The actual water production of the current operating cycle and the cumulative water production of the filter element can also be displayed to the user through the water purifier's display screen or mobile phone APP and other interfaces.

[0045] By correcting the water production flow rate, the working time of the booster pump and the precise calculation of the unit time conversion coefficient, the actual water production information of each operation cycle can be determined very accurately, and the actual water production of each operation cycle can be recorded and calculated in real time, thereby realizing real-time monitoring of the water production performance of the water purifier filter element, which helps to discover potential problems in time so that timely measures can be taken to deal with them; by initializing the cumulative water production variable and superimposing it at the end of each operation cycle, the cumulative water production information of the filter element can be easily tracked and recorded, providing clear data support for the replacement and maintenance of the filter element, avoiding the decline in water purification effect or excessive filter element due to untimely replacement. Problems with usage; storing the actual water production and cumulative water production in the water purifier's internal memory or on a cloud server not only ensures data security and reliability, but also facilitates subsequent data query and analysis. Users or managers can view the actual water production of the current operating cycle and the cumulative water production of the filter element at any time through the water purifier's display screen, mobile phone APP and other interfaces, so as to understand the operating status of the water purifier; by showing the user the actual water production of the current operating cycle and the cumulative water production of the filter element, the system realizes information transparency, and users can intuitively understand the operating status of the water purifier and the usage status of the filter element, so as to use the water purifier more confidently.

[0046] Based on the corrected filter element life information and the cumulative water production information, the water purifier filter element is prompted to be replaced, specifically including: determining the average water production information corresponding to the water purifier filter element through each corrected water production flow rate information and the boost pump working time information; determining the filter element water production threshold corresponding to the corrected filter element life information based on the average water production information and the corrected filter element life information; when the cumulative water production information exceeds the filter element water production threshold, determining that the water purifier filter element is in a replacement state to trigger the replacement reminder.

[0047] In one embodiment of the present specification, the corrected filter cartridge life information can be directly determined as the filter cartridge water production threshold. When the cumulative water production information exceeds the filter cartridge water production threshold, the water purifier filter cartridge is determined to be in a replacement state to trigger the cartridge replacement prompt. In actual use, there may be a situation where the cumulative water production before a certain water purification process is less than the water production corresponding to the corrected filter cartridge life, but the cumulative water production after the water purification process is greater than the corrected filter cartridge life. In this case, the last water purification effect will not meet the standard, affecting the user experience. In order to avoid the above problems, the cumulative water production information corresponding to the water purifier filter cartridge is obtained through each of the corrected water production flow rate information and the booster pump working time information, and the number of cycles of the water purifier filter cartridge operation cycle is obtained. The average water production information corresponding to the water purifier filter cartridge is determined by the ratio of the cumulative water production information and the number of cycles. The average water production information here represents the current user's habit when using the water purifier, that is, the average water production each time.

[0048] When determining the filter element water production threshold corresponding to the corrected filter element life information through the average water production information and the corrected filter element life information, the filter element water production threshold can be set to the difference between the water production corresponding to the corrected filter element life information and the water production corresponding to the average water production information. In addition to the above method, an advance amount or safety margin is set based on the corrected filter element life information (assuming that it is in units of water production) and the average water production information. By calculating the ratio of the average water production information and the corrected filter element life information, the safety margin ratio is determined, and the filter element water production threshold is determined according to the following formula: filter element water production threshold = corrected filter element life information × (1-safety margin ratio). It should be noted that a reasonable safety margin is set to ensure that when the filter element is close to its design life, the water purification effect is still up to standard, and user feedback on the element replacement prompt can also be collected to continuously optimize the setting method of the filter element water production threshold. By accurately predicting the replacement time of the filter element, users can be reminded before the filter element performance declines, avoiding the decline in water purification effect due to filter element aging, thereby ensuring that users can always enjoy high-quality water purification services; by monitoring the actual use of the filter element (such as cumulative water production, average water production, etc.), the filter element water production threshold can be set more scientifically to avoid waste caused by premature replacement of the filter element, while also ensuring that the filter element can still work normally when it is close to its design life; for users, reasonable setting of the filter element water production threshold can reduce unnecessary filter element replacement costs and reduce the cost of using the water purifier. For manufacturers, by providing intelligent filter element management solutions, the market competitiveness of products can be enhanced to attract more consumers; by real-time monitoring of filter element usage and issuing replacement reminders in advance, equipment failure or damage caused by filter element aging can be avoided, and the overall reliability and stability of the water purifier can be improved.

[0049] When the cumulative water production information exceeds the filter element water production threshold, the water purifier triggers the filter replacement reminder to remind the user to replace the filter element in time. Set the filter element replacement reminder function according to the cumulative water production. When the cumulative water production reaches the preset replacement threshold, the system will automatically send a reminder signal to notify the user to replace the filter element in time. This intelligent reminder function not only improves user convenience, but also helps to extend the service life of the water purifier and maintain the water purification effect.

[0050] Next, the implementation process of the filter element life correction model and the water production flow rate mapping table in the embodiments of this specification is explained through the following embodiments.

[0051] The method also includes: performing a water production flux test with multiple influencing indicators on each filter element to collect the filtering parameters of the filter element corresponding to each water production flux test, wherein the filtering parameters include flow rate parameters and filtering performance parameters, and the influencing indicators include any one or more of raw water concentration indicators and raw water temperature indicators; determining the filter element life correction model and water production flow rate mapping table corresponding to each filter element through the filtering parameters of each filter element and the test indicator data of the water production flux test.

[0052] The water production flux of each filter element is tested with multiple influencing indicators, including: at a specified raw water concentration, the water production flux of each filter element is tested at different raw water temperatures; at a specified raw water temperature, the water production flux of each filter element is tested at different raw water concentrations.

[0053] In one embodiment of the present specification, since there are filter elements of various specifications and each filter element has different properties, multiple water production flux tests are performed on each filter element under multiple influencing indicators, and the filtering parameters reflecting the performance of the filter element during each water production flux test are collected. Through the filtering parameters and the test index data of each water production flux test, a filter element life correction model and a water production flow rate mapping table corresponding to each filter element are constructed. It should be noted that the influencing index here refers to an index that affects the performance of the filter element. The influencing index in the embodiment of the present specification is the raw water concentration index and the raw water temperature index. For example, the water inlet pressure is determined to be 0.1Mpa~0.4Mpa, the raw water concentration index is controlled unchanged, and the raw water temperature index is changed to perform multiple water production flux tests, and the raw water temperature index is controlled unchanged and the raw water concentration index is changed to perform multiple water production flux tests. The example of the water production flux test is as follows. Controlling the raw water temperature index unchanged and changing the raw water concentration index includes the following water production flux tests: testing the water production flux by adding spiked water such as configuring 100TDS and at a constant water temperature of 15°C; testing the water production flux by adding spiked water such as configuring 250TDS and at a constant water temperature of 15°C; testing the water production flux by adding spiked water such as configuring 500TDS and at a constant water temperature of 15°C. Controlling the raw water concentration index unchanged and changing the raw water temperature index includes the following water production flux tests: testing the water production flux by adding spiked water such as configuring 500TDS and at a constant water temperature of 10°C; testing the water production flux by adding spiked water such as configuring 500TDS and at a constant water temperature of 20°C; testing the water production flux by adding spiked water such as configuring 500TDS and at a constant water temperature of 30°C.

[0054] Collecting the filtering parameters of the filter element corresponding to each water production flux test specifically includes: collecting the actual water production flow rate information of each filter element in each water production flux test, and when the cumulative water production test threshold corresponding to each filter element is met, collecting the filtering performance parameters of each filter element according to the preset inspection cycle, wherein the filtering performance parameters include any one or more of the desalination rate, spiked residual chlorine, residual chlorine after the filter element and residual chlorine removal rate.

[0055] In the above example, the actual water production flow rate information of the filter element is collected for each water production flux test process, and when the cumulative water production test threshold corresponding to each filter element is met, the filtration performance parameters of each filter element are collected according to the preset inspection cycle. The filtration performance parameters include any one or more of the desalination rate, spiked residual chlorine, residual chlorine after the filter element, and residual chlorine removal rate. It should be noted that the cumulative water production test threshold here can be determined by empirical data, and the cumulative water production test threshold of filter elements of different specifications is determined by the filter element life attenuation under the worst water quality. The inspection cycle is set according to actual needs. The smaller the inspection cycle is set, the more accurate the final life correction ratio will be, but the same workload will be greater.

[0056] The filter element life correction model and the water production flow rate mapping table corresponding to each filter element are determined through the filtering parameters of each filter element and the test index data of the water production flux test, which specifically includes: determining a plurality of specified filtering performance parameters that meet the preset performance reference data through the filtering performance parameters of each filter element, so as to determine the specified test index data and the specified water production flow rate corresponding to each specified filtering performance parameter, wherein the specified test index data includes a specified raw water temperature and a specified raw water concentration; constructing a water production flow rate mapping table for each filter element according to the specified test index data and the specified water production flow rate; determining the actual total water production of each filter element under different raw water concentrations through the plurality of specified filtering performance parameters; determining the life correction ratio under different raw water concentrations based on the actual total water production of the filter element and the theoretical total water production of the filter element, so as to construct the filter element life correction model.

[0057] In one embodiment of the present specification, it should be noted that the filtering performance parameters of the filter element are used to reflect the filtering effect of the filter element, and the performance reference data here is the reference data corresponding to the filtering capacity of the filter element under normal circumstances. Through the filtering performance parameters of each filter element, multiple specified filtering performance parameters that meet the preset performance reference data are determined, that is, the situation that meets the filtering requirements. In this case, for each specified filtering performance parameter, the corresponding test conditions are found, that is, the specified test index data, including the specified raw water temperature and the specified raw water concentration. At the same time, the specified water production flow rate achieved under these test conditions is recorded. According to the specified test index data (specified raw water temperature and specified raw water concentration) and the corresponding specified water production flow rate, a water production flow rate mapping table for each filter element is constructed, including the corresponding water production flow rate of the filter element at different raw water temperatures and concentrations.

[0058] By means of multiple specified filtration performance parameters, the actual total water production of each filter element at different raw water concentrations can be calculated; based on the actual total water production of the filter element and the theoretical total water production of the filter element (i.e., the designed water production of the filter element under standard conditions), the life correction ratio at different raw water concentrations can be calculated. This ratio reflects the degree of shortening or prolonging of the filter element life under actual use conditions relative to the theoretical life. By associating these correction ratios with the corresponding raw water concentrations, a filter element life correction model is constructed to predict the remaining life of the filter element at different raw water concentrations, providing users with the accurate time to replace the filter element. The following is an example of a filter element life correction model provided by the embodiments of this specification. When 0 < TDS <= 150, the corresponding filter element life correction ratio is +20%; when 150 < TDS <= 300, the corresponding filter element life correction ratio +10% = 24200L; when 300 < TDS <= 550, the corresponding filter element life correction ratio is +0%; when TDS > 550, the corresponding filter element life correction ratio is -10%. The water quality of the user's home water supply remains stable all year round. Therefore, after the machine is installed, the total water production of the filter element can be determined after collecting the water supply TDS multiple times without changing the usage area.

[0059] Through the above technical solutions, by obtaining the current raw water concentration data and cycle operation data (including the working time of the booster pump and the real-time raw water temperature) in real time, the actual usage of the filter element can be evaluated more accurately, avoiding premature or late prompt for replacing the filter element, ensuring that the filter element is replaced in time when it is close to its designed life, so as to maintain the best water purification effect of the water purifier; by considering the influence of raw water concentration and temperature on the filter element performance, the replacement standard of the filter element can be set more scientifically, avoiding unnecessary replacement before the filter element performance has significantly declined, thus prolonging the service life of the filter element and reducing the usage cost; the accurate filter element replacement prompt can ensure that users are reminded before the filter element performance declines, avoiding the decline of the water purification effect caused by filter element aging, thus improving the user's drinking experience, and reducing unnecessary replacement operations can also reduce the user's maintenance burden; by reasonably controlling the replacement timing of the filter element, the waste generated by frequent filter element replacement can be reduced, which conforms to the environmental protection concept.

[0060] Those skilled in the art should understand that the embodiments of this specification can be provided as a method, a system, or a computer program product. Therefore, this specification can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, this specification can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0061] This specification is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of this specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0062] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0063] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0064] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0065] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0066] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0067] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0068] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A filter element replacement control method for a water purifier, characterized in that: The method comprises: Obtaining current raw water concentration data and at least one periodic operation data corresponding to the water purifier filter element, wherein the periodic operation data includes booster pump working time information and corresponding real-time raw water temperature information; Determine the corrected filter life information corresponding to the filter element of the water purifier through the current raw water concentration data, and determine the corrected water production flow rate information corresponding to each of the periodic operation data according to the current raw water concentration data and the raw water temperature information; Based on each of the corrected water production flow rate information and the booster pump working time information, the cumulative water production information corresponding to the water purifier filter element is determined, so as to provide a filter replacement prompt for the water purifier filter element based on the corrected filter element life information and the cumulative water production information.

2. A filter element replacement control method for a water purifier according to claim 1, characterized in that: Determining the corrected filter element life information corresponding to the water purifier filter element through the current raw water concentration data, specifically including: Determine standard filter life information of the water purifier filter; The corrected filter element life information corresponding to the water purifier filter element is determined by using the current raw water concentration data and the standard filter element life information and a preset filter element life correction model.

3. A filter element replacement control method for a water purifier according to claim 2, characterized in that: The corrected filter cartridge life information corresponding to the filter cartridge of the water purifier is determined by using the current raw water concentration data and the standard filter cartridge life information and a preset filter cartridge life correction model, specifically including: Determine the current correction ratio corresponding to the filter element life correction model according to the current raw water concentration data; According to the current correction ratio, the standard filter element life information is corrected to determine the corrected filter element life information corresponding to the water purifier filter element.

4. A filter element replacement control method for a water purifier according to claim 1, characterized in that: Determining the corrected water production flow rate information corresponding to each of the periodic operation data according to the current raw water concentration data and the raw water temperature information specifically includes: Determine the filter element structure data of the water purifier filter element, and determine the water production flow rate mapping table corresponding to the water purifier filter element based on the filter element structure data; Based on the current raw water concentration data and the raw water temperature information, a match is performed in the produced water flow rate mapping table to determine the corrected produced water flow rate information corresponding to each of the periodic operation data.

5. A filter element replacement control method for a water purifier according to any one of claims 1 to 4, characterized in that: The method further comprises: Performing a water production flux test with multiple influencing indicators on each filter element to collect filtering parameters of the filter element corresponding to each water production flux test, wherein the filtering parameters include flow rate parameters and filtering performance parameters, and the influencing indicators include any one or more of a raw water concentration indicator and a raw water temperature indicator; The filter element life correction model and the water production flow rate mapping table corresponding to each filter element are determined through the filtration parameters of each filter element and the test index data of the water production flux test.

6. A filter element replacement control method for a water purifier according to claim 5, characterized in that: The filter element life correction model and the water production flow rate mapping table corresponding to each filter element are determined by the filtering parameters of each filter element and the test index data of the water production flux test, specifically including: Determine a plurality of specified filtration performance parameters that meet preset performance reference data through the filtration performance parameters of each filter element, so as to determine the specified test index data and the specified water production flow rate corresponding to each of the specified filtration performance parameters, wherein the specified test index data includes a specified raw water temperature and a specified raw water concentration; Constructing a water production flow rate mapping table for each filter element according to the specified test index data and the specified water production flow rate; Determine the actual total amount of water produced by each filter element at different raw water concentrations through the multiple specified filtration performance parameters; Based on the actual total water production of the filter element and the theoretical total water production of the filter element, the life correction ratio under different raw water concentrations is determined to construct the filter element life correction model.

7. A filter element replacement control method for a water purifier according to claim 6, characterized in that: Each filter element is tested for water flux with multiple influencing indicators, including: Under the specified raw water concentration, the water production flux of each filter element at different raw water temperatures was tested; At a specified raw water temperature, the water production flux of each filter element was tested at different raw water concentrations.

8. A filter element replacement control method for a water purifier according to claim 5, characterized in that: Collecting the filtering parameters of the filter element corresponding to each of the water production flux tests specifically includes: The actual water production flow rate information of each filter element in each water production flux test is collected, and when the cumulative water production test threshold corresponding to each filter element is met, the filtration performance parameters of each filter element are collected according to the preset inspection cycle, wherein the filtration performance parameters include any one or more of the desalination rate, spiked residual chlorine, residual chlorine after the filter element and residual chlorine removal rate.

9. A filter element replacement control method for a water purifier according to any one of claims 1 to 4, characterized in that: Based on each of the corrected water production flow rate information and the booster pump working time information, the cumulative water production information corresponding to the water purifier filter element is determined, specifically including: Based on each of the corrected water production flow rate information and the booster pump working time information, determining the actual water production information corresponding to each of the periodic operation data; The accumulated water production information corresponding to the filter element of the water purifier is determined by the actual water production information corresponding to each of the cycle operation data.

10. A filter element replacement control method for a water purifier according to any one of claims 1 to 4, characterized in that: Based on the corrected filter cartridge life information and the accumulated water production information, prompting the water purifier filter cartridge to be replaced specifically includes: Determine the average water production information corresponding to the water purifier filter element through each of the corrected water production flow rate information and the booster pump working time information; Based on the average water production information and the corrected filter element life information, determining a filter element water production threshold corresponding to the corrected filter element life information; When the accumulated water production information exceeds the filter element water production threshold, it is determined that the filter element of the water purifier is in a replacement state to trigger the element replacement prompt.

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