Filter core replacement reminding method and device, water purifier and storage medium

Abstract

The application relates to a filter core replacement reminding method and device, a water purifier, a storage medium and a computer program product. During operation of the water purifier, the accumulated water passing amount and the actual water passing flow rate of a filter core of the water purifier can be acquired in real time. In the case that the accumulated water passing amount does not meet the filter core replacement condition, the life expiration flow rate of the filter core is acquired, and then the life expiration flow rate and the actual water passing flow rate are compared and analyzed. In the case that the actual water passing flow rate is less than or equal to the life expiration flow rate, the minimum water passing amount of the filter core is further acquired. In the case that the accumulated water passing amount is greater than or equal to the minimum water passing amount, filter core replacement reminding information is output. According to the scheme, the filter core replacement reminding is not affected by water quality parameters in different regions, the accuracy of filter core replacement is improved, timely filter core replacement can be performed to ensure filtered water quality, and filter core waste caused by early replacement of the filter core can be avoided.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular to a filter replacement reminder method, device, water purifier, storage medium, and computer program product. Background Technology

[0002] With the development of science and technology and the improvement of people's living standards, people have increasingly higher requirements for drinking water, and water purifiers with water purification functions are gradually being widely used. The filter element is the core component of a water purifier, and its service life is limited. During long-term operation of a water purifier, the filter element needs to be replaced to ensure the water filtration effect.

[0003] Currently, filter replacement reminders are typically based on cumulative water production or cumulative water production time. However, water quality varies significantly across different regions. Existing filter replacement reminder systems can lead to filter waste in areas with good water quality, while in areas with poor water quality, filter replacement may not be timely. Summary of the Invention

[0004] Therefore, it is necessary to provide a filter replacement reminder method, device, water purifier, storage medium, and computer program product to address the problems of existing filter replacement reminder schemes, which easily lead to filter waste and untimely replacement.

[0005] This application provides a filter cartridge replacement reminder method, comprising: acquiring the cumulative water flow rate and actual water flow velocity of the filter cartridge of a water purifier in real time; when it is determined that the filter cartridge replacement conditions are not met based on the cumulative water flow rate, acquiring the life-end flow velocity of the filter cartridge; when the actual water flow velocity is less than or equal to the life-end flow velocity, acquiring the minimum water flow rate of the filter cartridge; and when the cumulative water flow rate is greater than or equal to the minimum water flow rate, outputting filter cartridge replacement reminder information.

[0006] In one embodiment, after obtaining the minimum water flow rate of the filter element when the actual water flow rate is less than or equal to the lifespan expiration flow rate, the method further includes: obtaining the cumulative water production time of the filter element when the cumulative water production time is less than the minimum water flow rate, and using the cumulative water production time to remind the filter element to be replaced.

[0007] In one embodiment, the step of reminding the filter cartridge to replace based on the cumulative water production time includes: obtaining the minimum water production time of the filter cartridge; outputting filter cartridge replacement reminder information when the cumulative water production time is greater than or equal to the minimum water production time; and returning to the step of obtaining the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time when the cumulative water production time is less than the minimum water production time.

[0008] In one embodiment, obtaining the minimum water production time of the filter element includes: obtaining the pump flow rate of the water purifier; and determining the minimum water production time of the filter element based on the pump flow rate and the minimum flow rate.

[0009] In one embodiment, after acquiring the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time, the method further includes: if the filter cartridge replacement conditions are met based on the cumulative water flow rate, outputting a filter cartridge replacement reminder message.

[0010] In one embodiment, the filter replacement reminder method further includes: determining that the filter replacement conditions are met when the cumulative water flow is greater than or equal to the rated water flow of the filter element.

[0011] In one embodiment, the method for determining the rated flow rate includes: obtaining the first filter element attenuation coefficient of the water purifier under excellent water quality conditions, and the initial flow rate of the filter element; and determining the rated flow rate of the filter element based on the first filter element attenuation coefficient, the initial flow rate, and the flow rate at the end of the filter life.

[0012] In one embodiment, after determining that the filter element replacement conditions are not met based on the cumulative water flow rate and obtaining the filter element's lifespan expiration flow rate, the method further includes: if the actual water flow rate is greater than the lifespan expiration flow rate, returning to the step of obtaining the cumulative water flow rate and actual water flow rate of the water purifier's filter element in real time.

[0013] In one embodiment, the method for determining the minimum water flow rate includes: obtaining the attenuation coefficient of the second filter element of the water purifier under poor water quality conditions, and the initial flow rate of the filter element; and determining the minimum water flow rate of the water purifier based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of the filter's lifespan.

[0014] This application provides a filter cartridge replacement reminder device, comprising: a parameter acquisition module for real-time acquisition of the cumulative water flow rate and actual water flow velocity of the filter cartridge of a water purifier; a water flow rate analysis module for acquiring the life-end flow velocity of the filter cartridge when the filter cartridge replacement conditions are not met based on the cumulative water flow rate; a flow velocity analysis module for acquiring the minimum water flow rate of the filter cartridge when the actual water flow velocity is less than or equal to the life-end flow velocity; and a replacement reminder module for outputting filter cartridge replacement reminder information when the cumulative water flow rate is greater than or equal to the minimum water flow rate.

[0015] This application provides a water purifier, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the above-described filter replacement reminder method.

[0016] This application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described filter replacement reminder method.

[0017] This application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described filter replacement reminder method.

[0018] The aforementioned filter replacement reminder method, device, water purifier, storage medium, and computer program product can acquire the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time during operation, and use these data to analyze and remind the filter cartridge to replace. Specifically, if the cumulative water flow rate determines that the filter cartridge replacement conditions are not met, the filter cartridge's lifespan expiration flow rate is obtained, and then compared and analyzed with the actual flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow rate, the minimum water flow rate of the filter cartridge is further obtained. If the cumulative water flow rate is greater than or equal to the minimum water flow rate, a filter cartridge replacement reminder is output. This solution incorporates the actual flow velocity, which is directly related to the water quality of the area where the water purifier is located, into the filter cartridge replacement reminder analysis. When the cumulative water flow rate determines that the filter cartridge replacement conditions are not met, it does not simply assume that the filter cartridge does not need to be replaced, but further combines the actual flow velocity, the minimum water flow rate of the filter cartridge, and the lifespan expiration flow rate to perform a filter cartridge replacement reminder analysis. This ensures that filter replacement reminders are not affected by water quality parameters in different areas, improving the accuracy of filter replacement. It allows for timely filter replacement to ensure filtered water quality and avoids premature filter replacement that could lead to waste. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the filter replacement reminder method in one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the filter replacement reminder method in another embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the cumulative water production time analysis process in one embodiment of this application;

[0023] Figure 4This is a schematic diagram of the cumulative water production time analysis process in another embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the filter replacement reminder method in another embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the filter replacement reminder method in another embodiment of this application;

[0026] Figure 7 This is a flowchart illustrating the filter replacement reminder process in one embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the filter replacement reminder device in one embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the filter replacement reminder device in another embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the internal structure of a water purifier in one embodiment of this application. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0031] The filter replacement reminder method provided in this application is applied to water purifiers. Specifically, the water purifier referred to in this application is any device equipped with a filter and having water purification function. It can be a single-function water purifier or a device with water purification and other functions, such as an air purifier-water purifier, an air conditioner-water purifier, etc., and is not specifically limited.

[0032] Please see Figure 1 This application provides a filter replacement reminder method, including steps 102, 104, 106 and 108.

[0033] Step 102: Obtain the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time.

[0034] Specifically, the cumulative water flow rate is the total amount of water that flows through the filter cartridge during its current use; the actual water flow rate is the actual amount of water flowing through the filter cartridge per unit time. In real-world scenarios, a flow meter is installed at the filter cartridge to collect the cumulative water flow rate and actual water flow rate, and then send this data to the water purifier's processor.

[0035] It is understandable that, in one embodiment, to ensure that the water purifier's filter cartridge reaches the end of its service life in a timely manner, after the water purifier is turned on, it is necessary to collect the cumulative water flow rate and actual water flow velocity of the filter cartridge in real time for replacement reminder analysis, that is, to perform a life analysis on the filter cartridge. The method of obtaining the cumulative water flow rate and actual water flow velocity in real time is not unique. In one embodiment, an acquisition cycle can be set, and the flow meter can periodically send the collected cumulative water flow rate and actual water flow velocity to the water purifier's processor.

[0036] Step 104: If the filter element replacement conditions are not met based on the cumulative water flow, obtain the filter element's lifespan expiration flow rate.

[0037] Specifically, the lifespan end-of-life flow rate is the water flow rate when the filter element reaches the end of its service life. In real-world scenarios, the lifespan end-of-life flow rate will vary depending on factors such as the filter element material. Therefore, in one embodiment, for different water purifiers, the lifespan end-of-life flow rate can be stored in a preset format in the water purifier's processor, and can be directly recalled when needed later.

[0038] After obtaining the cumulative water flow rate and actual flow velocity of the filter cartridge, the processor first performs a lifespan analysis based on the cumulative water flow rate. If the cumulative water flow rate determines that the filter cartridge has not reached its lifespan, meaning it does not meet the replacement criteria, then to ensure the accuracy of the final filter cartridge replacement reminder and guarantee the quality of purified water, the processor will retrieve the lifespan expiration flow rate and combine it with the actual flow velocity to correct the filter cartridge replacement reminder, resulting in a more accurate replacement reminder.

[0039] Step 106: When the actual water flow rate is less than or equal to the flow rate at the end of the filter life, obtain the minimum water flow rate of the filter element.

[0040] Specifically, the minimum flow rate is the minimum amount of water that can flow through the filter cartridge when it reaches the end of its service life. In real-world scenarios, even the same filter cartridge will have different cumulative water flow rates when it reaches its service life under different water quality conditions. Therefore, for the same water purifier or filter cartridge made of the same material, a corresponding minimum flow rate can be configured based on the actual scenario. In this embodiment, after obtaining the flow rate at the end of the service life, the processor compares and analyzes this flow rate with the actual flow rate. When the actual flow rate is less than or equal to the flow rate at the end of the service life, it indicates that the filter cartridge is at risk of reaching its service life, and further analysis based on the minimum flow rate is needed to determine whether the filter cartridge has reached its service life.

[0041] Step 108: If the cumulative water flow is greater than or equal to the minimum water flow, output a filter replacement reminder message.

[0042] Specifically, after determining that the water purifier's filter cartridge is at risk of reaching the end of its service life by combining the actual water flow rate and the flow rate at which the cartridge reaches the end of its service life, the processor will compare and analyze the cumulative water flow with the minimum water flow. The minimum water flow represents the minimum amount of water that can flow through the filter cartridge when it reaches the end of its service life. If the analysis shows that the cumulative water flow is greater than the minimum water flow, it indicates that the water purifier is operating under poor water quality conditions, causing the actual water flow rate to be less than or equal to the flow rate at the end of the filter cartridge's service life. Therefore, in this case, it can be directly assumed that the filter cartridge has reached the end of its service life, and the processor will output a filter cartridge replacement reminder message, thus reminding the user to replace the filter cartridge.

[0043] The aforementioned filter replacement reminder method can acquire the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time during operation, and use these data to analyze and remind users to replace the filter cartridge. Specifically, if the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the filter cartridge's lifespan expiration flow rate is obtained, and then compared with the actual flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow rate, the minimum water flow rate of the filter cartridge is further obtained. If the cumulative water flow rate is greater than or equal to the minimum flow rate, a filter cartridge replacement reminder is output. This scheme incorporates the actual flow velocity, which is directly related to the water quality of the area where the water purifier is located, into the filter cartridge replacement reminder analysis. When the cumulative water flow rate determines that the filter cartridge replacement condition is not met, it does not simply assume that the filter cartridge does not need to be replaced, but rather further combines the actual flow velocity, the minimum water flow rate of the filter cartridge, and the lifespan expiration flow rate to perform a filter cartridge replacement reminder analysis. This ensures that filter replacement reminders are not affected by water quality parameters in different areas, improving the accuracy of filter replacement. It allows for timely filter replacement to ensure filtered water quality and avoids premature filter replacement that could lead to waste.

[0044] Please see Figure 2 In one embodiment, after step 106, the method further includes step 202.

[0045] Step 202: If the cumulative water flow is less than the minimum water flow, obtain the cumulative water production time of the filter element, and remind the filter element to be replaced based on the cumulative water production time.

[0046] Specifically, the cumulative water production time is the total duration of water filtration performed by the currently used filter cartridge in the water purifier. It should be noted that the method for obtaining the cumulative water production time is not unique; in one embodiment, it can be obtained through a timer configured in the water purifier. It is understood that in one embodiment, the water purifier's filter cartridge performs water filtration while the water pump operates. Therefore, the pump's operating time (i.e., the cumulative operating time of the pump under the current filter cartridge) can be used as the cumulative water production time, and the appropriate method can be selected based on actual needs. It is understood that in real-world scenarios, after the filter cartridge is replaced, both the cumulative water production time and the cumulative water flow will be reset to zero.

[0047] When the processor obtains the minimum water flow rate of the filter cartridge and compares it with the cumulative water flow rate, if the cumulative water flow rate is less than the minimum water flow rate, it indicates that the cumulative water flow rate of the filter cartridge has not yet reached the standard for its service life. However, before this, the actual water flow rate is detected to be less than or equal to the flow rate at the end of its service life. Therefore, it can be considered that the flow meter is malfunctioning in this situation, that is, there is a problem with the detection of the actual water flow rate or the cumulative water flow rate. In order to ensure that a replacement reminder is issued when the filter cartridge reaches its service life, this embodiment will change to using the cumulative water production time of the filter cartridge for the replacement reminder.

[0048] The above solution requires further analysis based on the cumulative water production time to remind users to replace the filter cartridge when the actual water flow rate is less than or equal to the lifespan end flow rate, but the cumulative water flow has not reached the minimum flow rate. This avoids issues arising from abnormalities detected by the testing agency, ensuring water quality for users while minimizing filter cartridge waste.

[0049] Please see Figure 3 In one embodiment, the filter cartridge is reminded to be replaced based on the cumulative water production time, including steps 302 and 304.

[0050] Step 302: Obtain the minimum water production time of the filter cartridge.

[0051] Step 304: If the cumulative water production time is greater than or equal to the minimum water production time, output a filter replacement reminder message.

[0052] If the cumulative water production time is less than the minimum water production time, return to the step of obtaining the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time.

[0053] Specifically, the minimum water production time is the shortest cumulative water production time before the filter cartridge reaches its lifespan. In real-world scenarios, even the same filter cartridge will have different cumulative water production times under different water quality conditions before reaching its lifespan. Therefore, for the same water purifier or filter cartridge made of the same material, a corresponding minimum water production time can be configured based on the actual scenario. In this embodiment, the processor pre-stores the current minimum water production time of the water purifier. When the processor analyzes the cumulative water flow and the minimum water flow and determines that the cumulative water flow is less than the minimum water flow, it retrieves the minimum water production time and combines it with the cumulative water production time to analyze the filter cartridge's lifespan.

[0054] If the processor detects that the cumulative water production time is greater than or equal to the minimum water production time, it considers the filter cartridge to have reached its lifespan and will output a filter cartridge replacement reminder to remind the user to replace the filter cartridge. If the processor detects that the cumulative water production time is less than the minimum water production time, it considers the filter cartridge to have not reached its lifespan and will return to the operation of obtaining the cumulative water flow and actual water flow rate of the water purifier's filter cartridge in real time, starting the next round of filter cartridge lifespan analysis.

[0055] This solution analyzes the lifespan of water purifier filters based on the minimum water production time of the filter cartridge, thereby ensuring timely replacement reminders when the filter cartridge reaches its service life and guaranteeing the water purification quality of the water purifier.

[0056] Please see Figure 4 In one embodiment, step 302 includes steps 402 and 404.

[0057] Step 402: Obtain the water flow rate of the water purifier's pump.

[0058] Step 404: Determine the minimum water production time of the filter element based on the pump flow rate and minimum flow rate.

[0059] Specifically, the pump flow rate, also known as the water flow speed output by the pump in a water purifier, can be measured in seconds per liter. As shown in the example above, the minimum flow rate is the minimum amount of water that can flow through the filter cartridge when it reaches the end of its service life, and its unit can also be liters. Therefore, in practical scenarios, by combining the pump flow rate and the minimum flow rate, the shortest cumulative water production time when the filter cartridge reaches its service life can be obtained. This solution analyzes the minimum water production time using the pump flow rate and the minimum flow rate to ensure the accuracy of the minimum water production time.

[0060] In a more detailed embodiment, the minimum water production time is determined as follows: tmin = Lmin × t, where tmin represents the minimum water production time and Lmin represents the minimum water flow rate. In this embodiment, the pump running time is used as the minimum water production time.

[0061] Please see Figure 5 In one embodiment, after step 102, the method further includes step 502.

[0062] Step 502: If the filter element replacement conditions are met based on the cumulative water flow, output a filter element replacement reminder message.

[0063] Specifically, when the processor acquires the cumulative water flow and analyzes whether the filter replacement conditions are met based on this flow, it may encounter situations where the filter replacement conditions are met. In this case, there is no need to continue analyzing based on the actual water flow rate; the filter is directly determined to have reached its service life, and a filter replacement reminder is output for replacement. This allows for timely replacement reminders when the filter reaches its service life, ensuring the water purification quality of the water purifier.

[0064] It should be noted that the method of determining whether the filter element replacement condition is met based on the cumulative water flow is not the only one. In one embodiment, the filter element replacement reminder method further includes: determining that the filter element replacement condition is met when the cumulative water flow is greater than or equal to the rated water flow of the filter element.

[0065] Specifically, the rated flow rate is the cumulative amount of water that the filter cartridge can flow through under normal conditions until it reaches the end of its service life. For the same filter cartridge, the rated flow rate is generally greater than the minimum flow rate. In this embodiment, the rated flow rate is pre-stored in the water purifier's processor. During operation, the rated flow rate is retrieved and compared with the cumulative flow rate. When the cumulative flow rate is greater than or equal to the rated flow rate, the filter cartridge is considered to have reached its service life, and a filter cartridge replacement reminder is issued. Conversely, when the cumulative flow rate is less than the rated flow rate, the filter cartridge replacement condition is not met, and subsequent lifespan analysis is initiated. This solution, which uses the filter cartridge's rated flow rate to determine whether a filter cartridge needs replacement, has high accuracy.

[0066] In one embodiment, the method for determining the rated flow rate includes: obtaining the attenuation coefficient of the first filter element under excellent water quality conditions and the initial flow rate of the filter element; and determining the rated flow rate of the filter element based on the attenuation coefficient of the first filter element, the initial flow rate, and the flow rate at the end of its lifespan.

[0067] Specifically, excellent water quality conditions refer to conditions with relatively good water quality. This can be distinguished by total dissolved solids (TDS) and total organic carbon (TOC). When TDS or TOC is below a certain threshold, it is considered an excellent water quality condition. Initial flow rate refers to the flow rate that the filter cartridge can achieve during the first water filtration. Specifically, this can be the initial flow rate under normal water quality conditions or the initial flow rate under excellent water quality conditions; the choice depends on actual needs and is not limited to any particular condition.

[0068] In real-world scenarios, the flow rate of the filter cartridge decreases with usage time, and this decrease rate varies depending on water quality conditions. Therefore, a test system can be built in an experimental setting, taking into account the filter cartridge material and area, to measure the first filter cartridge's attenuation coefficient and initial flow rate under ideal water quality conditions. Subsequently, by combining the first filter cartridge attenuation coefficient, initial flow rate, and flow rate at the end of the filter's lifespan, the rated flow rate of the water purifier's filter cartridge can be calculated.

[0069] In a more detailed embodiment, the rated flow rate is calculated as follows: Lmax = (QB0 - QB1) / kma, where Lmax represents the rated flow rate, kma represents the first filter element attenuation coefficient, QB0 represents the initial flow rate, and QB1 represents the flow rate at the end of the filter's lifespan.

[0070] Please see Figure 6 In one embodiment, after step 104, the method further includes: if the actual water flow rate is greater than the lifespan expiration flow rate, returning to the step of real-time acquisition of the cumulative water flow volume and actual water flow rate of the water purifier's filter cartridge.

[0071] Specifically, when the processor compares the flow rate at the end of the filter's lifespan with the actual flow rate, there may be instances where the actual flow rate exceeds the lifespan end-of-life flow rate. In this case, not only does the cumulative water flow not meet the filter replacement criteria, but the actual flow rate also does not reach the lifespan end-of-life flow rate. Therefore, it can be directly determined that the filter has not reached its lifespan, and no replacement reminder is needed. Thus, the process returns to retrieving the cumulative water flow and actual flow rate of the water purifier's filter in real time, initiating the next round of filter lifespan analysis. This solution ensures accurate replacement reminders and timely reminders when the filter reaches its lifespan, improving the water purifier's operational reliability.

[0072] In one embodiment, the method for determining the minimum water flow rate includes: obtaining the attenuation coefficient of the second filter element of the water purifier under poor water quality conditions, and the initial flow rate of the filter element; and determining the minimum water flow rate of the water purifier based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of the filter's lifespan.

[0073] Specifically, poor water quality conditions, also known as conditions with poor water quality, can be distinguished using parameters such as TDS and TOC. If TDS or TOC exceeds a certain threshold, it is considered a poor water quality condition. The initial flow velocity and the flow velocity at the end of the lifespan are consistent with the parameters used in the rated flow rate analysis in the above embodiments.

[0074] Similarly, in an experimental setting, a test system can be built, taking into account the material and area of ​​the water purifier's filter cartridge, to measure the attenuation coefficient of the second filter cartridge under poor water quality conditions. Then, by combining the attenuation coefficient of the second filter cartridge, the initial flow rate, and the flow rate at the end of its lifespan, the minimum water flow rate of the water purifier's filter cartridge can be calculated.

[0075] In a more detailed embodiment, the minimum flow rate is calculated as follows: Lmin = (QB0 - QB1) / kmin, where Lmin represents the minimum flow rate, kmin represents the second filter element attenuation coefficient, QB0 represents the initial flow rate, and QB1 represents the flow rate at the end of the filter's lifespan.

[0076] Please see Figure 7 To facilitate understanding of the technical solution of this application, the following detailed embodiments will be used to explain and illustrate this application.

[0077] First, based on the filter material and area of ​​the water purifier, experiments were conducted with the entire system. Under excellent water quality conditions, the first filter attenuation coefficient kmax was obtained, thus calculating the rated flow rate Lmax = (QB0 - QB1) / kmax. Under poor water quality conditions, the second filter attenuation coefficient kmin was obtained, thus determining the minimum flow rate Lmin = (QB0 - QB1) / kmin, where QB0 is the initial flow rate of the filter and QB1 is the flow rate at the end of the filter's lifespan. Next, using the water pump's flow rate t (seconds / liter), the minimum flow rate Lmin was converted to a pump running time tmin = Lmin × t. The pump running time tmin was used as the minimum water production time of the filter. QB1, tmin, Lmin, and Lmax were pre-stored in the processor for later use.

[0078] During the operation of the water purifier, the flow meter obtains the cumulative water flow, actual water flow rate, and cumulative water production time in real time.

[0079] 1. When the cumulative water flow reaches the rated water flow Lmax of the filter element (that is, the cumulative water flow is greater than or equal to Lmax), the filter element is deemed to have reached the end of its lifespan, and the user is prompted to replace the filter element; otherwise, proceed to step 2.

[0080] 2. Compare and analyze the actual water flow rate with QB1. If the actual water flow rate is greater than the filter cartridge's lifespan limit, it is assumed that the filter cartridge has not reached its lifespan, the water purifier is operating normally, and the system returns to re-acquire the cumulative water volume, actual water flow rate, and cumulative water production time. If the actual water flow rate is less than or equal to the filter cartridge's lifespan limit, further analysis is performed in conjunction with the minimum water volume Lmin and the cumulative water volume.

[0081] Specifically, if the cumulative water flow is detected to be greater than or equal to the minimum water flow Lmin, it is considered that the water purifier is being used in a poor water quality environment, the filter cartridge is deemed to be due, and the user is prompted to replace the cartridge; if the cumulative water flow is detected to be less than the minimum water flow Lmin, it is considered that the flow meter is malfunctioning, and the lifespan analysis is instead based on the cumulative water production time.

[0082] When analyzing the lifespan based on the cumulative water production time, if the cumulative water production time is greater than or equal to the minimum water production time tmin, the filter cartridge is deemed to have reached its lifespan and a replacement reminder is issued; if the cumulative water production time is less than the minimum water production time, the water purifier operates normally and returns to reacquire the cumulative water flow, actual water flow rate, and cumulative water production time.

[0083] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0084] Based on the same inventive concept, this application also provides a filter replacement reminder device for implementing the filter replacement reminder method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the filter replacement reminder device provided below can be found in the limitations of the filter replacement reminder method described above, and will not be repeated here.

[0085] Please see Figure 8 This application provides a filter replacement reminder device, including a parameter acquisition module 802, a water flow analysis module 804, a flow rate analysis module 806, and a replacement reminder module 808.

[0086] The parameter acquisition module 802 is used to acquire the cumulative water flow rate and actual water flow velocity of the filter element of the water purifier in real time; the water flow rate analysis module 804 is used to acquire the filter element's life-end flow velocity when the filter element replacement conditions are not met based on the cumulative water flow rate; the flow velocity analysis module 806 is used to acquire the minimum water flow rate of the filter element when the actual water flow velocity is less than or equal to the life-end flow velocity; the replacement reminder module 808 is used to output filter element replacement reminder information when the cumulative water flow rate is greater than or equal to the minimum water flow rate.

[0087] Please see Figure 9 In one embodiment, after the flow rate analysis module 806, the device also includes a water production time analysis module 902.

[0088] The water production time analysis module 902 is used to obtain the cumulative water production time of the filter cartridge when the cumulative water flow is less than the minimum water flow, and to remind the filter cartridge to be replaced based on the cumulative water production time.

[0089] In one embodiment, the water production time analysis module 902 is also used to obtain the minimum water production time of the filter cartridge; if the cumulative water production time is greater than or equal to the minimum water production time, it outputs a filter cartridge replacement reminder message.

[0090] In one embodiment, the water production time analysis module 902 obtains the water flow rate of the water purifier's pump; based on the pump flow rate and the minimum flow rate, it determines the minimum water production time of the filter element.

[0091] In one embodiment, the replacement reminder module 808 is further configured to output filter element replacement reminder information when it is determined, based on the cumulative water flow, that the filter element replacement conditions are met.

[0092] In one embodiment, the flow rate analysis module 806 is also used to return to the control parameter acquisition module 802 to perform the operation of real-time acquisition of the cumulative water flow and actual water flow rate of the filter element of the water purifier when the actual water flow rate is greater than the life-end flow rate.

[0093] The various modules in the aforementioned filter replacement reminder device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0094] The aforementioned filter replacement reminder device can acquire the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time during operation, and analyze these data to provide replacement reminders. Specifically, if the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the device obtains the filter cartridge's lifespan expiration flow rate, and then compares and analyzes this flow rate with the actual flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow rate, the device further obtains the minimum water flow rate of the filter cartridge. If the cumulative water flow rate is greater than or equal to the minimum flow rate, a filter cartridge replacement reminder is output. This solution incorporates the actual flow velocity, which is directly related to the water quality of the area where the water purifier is located, into the filter cartridge replacement reminder analysis. When the cumulative water flow rate determines that the filter cartridge replacement condition is not met, it does not simply assume that the filter cartridge does not need to be replaced, but rather further analyzes the actual flow velocity, the minimum water flow rate, and the lifespan expiration flow rate to provide a replacement reminder. This ensures that filter replacement reminders are not affected by water quality parameters in different areas, improving the accuracy of filter replacement. It allows for timely filter replacement to ensure filtered water quality and avoids premature filter replacement that could lead to waste.

[0095] Please see Figure 10 This application provides a water purifier, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the following steps for a filter replacement reminder method:

[0096] The system acquires the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time. If the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the system acquires the filter cartridge's lifespan expiration flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow velocity, the system acquires the minimum water flow rate of the filter cartridge. If the cumulative water flow rate is greater than or equal to the minimum water flow rate, the system outputs a filter cartridge replacement reminder message.

[0097] In one embodiment, when the processor executes the computer program, it further performs the following steps: when the cumulative water flow is less than the minimum water flow, it obtains the cumulative water production time of the filter cartridge and reminds the filter cartridge to be replaced based on the cumulative water production time.

[0098] In one embodiment, when the processor executes the computer program, it also performs the following steps: obtaining the minimum water production time of the filter cartridge; and outputting a filter cartridge replacement reminder message when the cumulative water production time is greater than or equal to the minimum water production time.

[0099] In one embodiment, when the processor executes the computer program, it also performs the following steps: obtaining the water flow rate of the water purifier's pump; and determining the minimum water production time of the filter cartridge based on the water flow rate and the minimum water flow volume.

[0100] In one embodiment, when the processor executes the computer program, it further performs the following steps: if it determines that the filter element replacement conditions are met based on the cumulative water flow, it outputs a filter element replacement reminder message.

[0101] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining that the filter element replacement conditions are met when the cumulative water flow is greater than or equal to the rated water flow of the filter element.

[0102] In one embodiment, when the processor executes the computer program, it further performs the following steps: obtaining the first filter element attenuation coefficient and the initial flow rate of the filter element under excellent water quality conditions; and determining the rated flow rate of the filter element based on the first filter element attenuation coefficient, the initial flow rate, and the flow rate at the end of its lifespan.

[0103] In one embodiment, when the processor executes the computer program, it further implements the following steps: if the actual water flow rate is greater than the lifespan expiration flow rate, it returns to the step of obtaining the cumulative water flow volume and actual water flow rate of the water purifier's filter cartridge in real time.

[0104] In one embodiment, when the processor executes the computer program, it further performs the following steps: obtaining the attenuation coefficient of the second filter element of the water purifier under poor water quality conditions, and the initial flow rate of the filter element; determining the minimum flow rate of the water purifier based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of the filter's lifespan.

[0105] Those skilled in the art will understand that Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0106] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0107] The system acquires the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time. If the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the system acquires the filter cartridge's lifespan expiration flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow velocity, the system acquires the minimum water flow rate of the filter cartridge. If the cumulative water flow rate is greater than or equal to the minimum water flow rate, the system outputs a filter cartridge replacement reminder message.

[0108] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: when the cumulative water flow is less than the minimum water flow, it obtains the cumulative water production time of the filter cartridge and reminds the filter cartridge to be replaced based on the cumulative water production time.

[0109] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the minimum water production time of the filter cartridge; and outputting a filter cartridge replacement reminder message when the cumulative water production time is greater than or equal to the minimum water production time.

[0110] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: obtaining the water flow rate of the water purifier's pump; and determining the minimum water production time of the filter cartridge based on the water flow rate and the minimum water flow volume.

[0111] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining that the filter element replacement conditions are met when the cumulative water flow is greater than or equal to the rated water flow of the filter element.

[0112] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the first filter element attenuation coefficient and the initial flow rate of the filter element under excellent water quality conditions; and determining the rated flow rate of the filter element based on the first filter element attenuation coefficient, the initial flow rate, and the flow rate at the end of its lifespan.

[0113] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: if the actual water flow rate is greater than the lifespan end flow rate, returning to the step of obtaining the cumulative water flow and actual water flow rate of the water purifier's filter cartridge in real time.

[0114] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the attenuation coefficient of the second filter element of the water purifier under poor water quality conditions, and the initial flow rate of the filter element; determining the minimum flow rate of the water purifier based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of the filter's lifespan.

[0115] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0116] The system acquires the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time. If the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the system acquires the filter cartridge's lifespan expiration flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow velocity, the system acquires the minimum water flow rate of the filter cartridge. If the cumulative water flow rate is greater than or equal to the minimum water flow rate, the system outputs a filter cartridge replacement reminder message.

[0117] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: when the cumulative water flow is less than the minimum water flow, it obtains the cumulative water production time of the filter cartridge and reminds the filter cartridge to be replaced based on the cumulative water production time.

[0118] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the minimum water production time of the filter cartridge; and outputting a filter cartridge replacement reminder message when the cumulative water production time is greater than or equal to the minimum water production time.

[0119] In one embodiment, when the computer program is executed by the processor, it also performs the following steps: obtaining the water flow rate of the water purifier's pump; and determining the minimum water production time of the filter cartridge based on the water flow rate and the minimum water flow volume.

[0120] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining that the filter element replacement conditions are met when the cumulative water flow is greater than or equal to the rated water flow of the filter element.

[0121] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the first filter element attenuation coefficient and the initial flow rate of the filter element under excellent water quality conditions; and determining the rated flow rate of the filter element based on the first filter element attenuation coefficient, the initial flow rate, and the flow rate at the end of its lifespan.

[0122] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: if the actual water flow rate is greater than the lifespan end flow rate, returning to the step of obtaining the cumulative water flow and actual water flow rate of the water purifier's filter cartridge in real time.

[0123] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the attenuation coefficient of the second filter element of the water purifier under poor water quality conditions, and the initial flow rate of the filter element; determining the minimum flow rate of the water purifier based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of the filter's lifespan.

[0124] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0125] The aforementioned water purifier, storage medium, and computer program products can acquire the cumulative water flow rate and actual flow velocity of the water purifier's filter cartridge in real time during operation. This data is used to analyze and remind the filter cartridge to replace. Specifically, if the cumulative water flow rate determines that the filter cartridge replacement condition is not met, the filter cartridge's lifespan expiration flow rate is obtained, and then compared with the actual flow velocity. If the actual flow velocity is less than or equal to the lifespan expiration flow rate, the minimum water flow rate of the filter cartridge is further obtained. If the cumulative water flow rate is greater than or equal to the minimum flow rate, a filter cartridge replacement reminder is output. This solution incorporates the actual flow velocity, which is directly related to the water quality of the area where the water purifier is located, into the filter cartridge replacement reminder analysis. When the cumulative water flow rate determines that the filter cartridge replacement condition is not met, it does not simply assume that replacement is unnecessary. Instead, it further combines the actual flow velocity, the minimum water flow rate, and the lifespan expiration flow rate to perform a filter cartridge replacement reminder analysis. This ensures that filter replacement reminders are not affected by water quality parameters in different areas, improving the accuracy of filter replacement. It allows for timely filter replacement to ensure filtered water quality and avoids premature filter replacement that could lead to waste.

[0126] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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 embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A filter replacement reminder method, characterized in that, include: Real-time acquisition of the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge; If the filter element replacement conditions are not met based on the cumulative water flow, the life-end flow rate of the filter element is obtained; the life-end flow rate is the water flow rate when the filter element reaches its service life. When the actual water flow rate is less than or equal to the lifespan end flow rate, the minimum water flow rate of the filter element is obtained; the minimum water flow rate represents the minimum amount of water that the filter element can cumulatively flow through when it reaches the end of its service life. If the cumulative water flow is greater than or equal to the minimum water flow, a filter replacement reminder message will be output. If the cumulative water flow is less than the minimum water flow, the cumulative water production time of the filter element is obtained, and the filter element is reminded to be replaced based on the cumulative water production time.

2. The filter replacement reminder method according to claim 1, characterized in that, The method of reminding the filter cartridge to be replaced based on the cumulative water production time includes: Obtain the minimum water production time of the filter element; If the cumulative water production time is greater than or equal to the minimum water production time, a filter replacement reminder message will be output. If the cumulative water production time is less than the minimum water production time, return to the step of obtaining the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time.

3. The filter replacement reminder method according to claim 2, characterized in that, The process of obtaining the minimum water production time for the filter element includes: Obtain the water flow rate of the pump in the water purifier; The minimum water production time of the filter element is determined based on the pump flow rate and the minimum flow rate.

4. The filter replacement reminder method according to claim 1, characterized in that, After acquiring the cumulative water flow rate and actual water flow velocity of the water purifier's filter cartridge in real time, the method further includes: If the cumulative water flow determines that the filter cartridge replacement conditions are met, a filter cartridge replacement reminder message will be output.

5. The filter replacement reminder method according to claim 1, characterized in that, Also includes: If the cumulative water flow is greater than or equal to the rated water flow of the filter element, the filter element replacement condition is determined to be met.

6. The filter replacement reminder method according to claim 5, characterized in that, The method for determining the rated flow rate includes: The attenuation coefficient of the first filter element of the water purifier under excellent water quality conditions and the initial flow rate of the filter element are obtained. The rated flow rate of the filter element is determined based on the attenuation coefficient of the first filter element, the initial flow rate, and the flow rate at the end of its service life.

7. The filter replacement reminder method according to any one of claims 1-6, characterized in that, After determining that the filter element replacement conditions are not met based on the cumulative water flow, and obtaining the filter element's lifespan expiration flow rate, the process further includes: If the actual water flow rate is greater than the lifespan expiration flow rate, return to the step of obtaining the cumulative water flow and actual water flow rate of the water purifier's filter cartridge in real time.

8. The filter replacement reminder method according to any one of claims 1-6, characterized in that, The method for determining the minimum flow rate includes: The attenuation coefficient of the second filter element of the water purifier under poor water quality conditions and the initial flow rate of the filter element are obtained. The minimum flow rate of the water purifier is determined based on the attenuation coefficient of the second filter element, the initial flow rate, and the flow rate at the end of its lifespan.

9. A filter replacement reminder device, characterized in that, include: The parameter acquisition module is used to obtain the cumulative water flow and actual water flow rate of the water purifier's filter cartridge in real time. The water flow analysis module is used to obtain the life-end flow rate of the filter element when it is determined from the cumulative water flow that the filter element does not meet the replacement conditions; the life-end flow rate is the water flow rate when the filter element reaches its service life. The flow rate analysis module is used to obtain the minimum water flow rate of the filter element when the actual water flow rate is less than or equal to the life-end flow rate; the minimum water flow rate represents the minimum amount of water that the filter element can cumulatively flow through when it reaches the end of its service life. The replacement reminder module is used to output filter cartridge replacement reminder information when the cumulative water flow is greater than or equal to the minimum water flow. The water production time analysis module is used to obtain the cumulative water production time of the filter element when the cumulative water flow is less than the minimum water flow, and to remind the filter element to be replaced based on the cumulative water production time.

10. A water purifier, characterized in that, The device includes a memory and a processor, the memory storing a computer program, characterized in that the processor executes the computer program to implement the steps of the filter replacement reminder method according to any one of claims 1 to 8.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the filter replacement reminder method according to any one of claims 1 to 8.

12. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the filter replacement reminder method according to any one of claims 1 to 8.

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