Filter element service life prediction method and device, water purification equipment and storage medium

Abstract

The invention provides a filter element service life prediction method and device, water purification equipment and a storage medium, and the method comprises the steps: detecting the current water yield of a wastewater end under the condition that a filter element reaches an osmotic equilibrium state; based on the first corresponding relation, determining the current total dissolved solid matter concentration corresponding to the current wastewater amount; the first corresponding relationship is used for indicating a corresponding relationship between a plurality of water outlets corresponding to the wastewater end and a plurality of total dissolved solid substance concentrations of the water inlet end; based on the current total soluble solid substance concentration, predicting the residual life of the filter element to obtain life prediction information; the life prediction information is used for indicating the life balance state of the filter element. Based on the RO reverse osmosis technology, the corresponding current total dissolved solid matter concentration is determined according to the current water yield of the wastewater end, then the residual life of the filter element is predicted according to the current TDS value, accuracy is high, and potential safety hazards caused by the fact that a TDS meter is arranged in water purification equipment are also avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a filter element life prediction method, device, water purification equipment and storage medium. Background Art

[0002] The water purification equipment currently on the market calculates the natural time through built-in or networked means. When the natural time accumulates to a certain threshold, it is determined that the filter element has reached its lifespan. Alternatively, the total flow is calculated through the water pump and the flow through the water pump. When the total flow reaches a threshold, it is determined that the filter element has reached its lifespan.

[0003] However, the above method cannot accurately evaluate the actual life of the filter element, which reduces the accuracy and efficiency of the life detection of the filter element of the water purification equipment. The user cannot choose whether to replace the filter element according to the actual life of the filter element, which may increase the failure rate of the water purification equipment and cause unsafe water quality, or replace the filter element in advance, resulting in waste and reduced user satisfaction. In addition, it is also impossible to calculate the life of the filter element according to the actual total dissolved solids concentration (TDS). Most TDS meters in the prior art use metal probes to determine the TDS value by detecting the current value between the metal probes. If a TDS meter is built into the water path of the water purification equipment, it may cause problems such as metal rust or scaling, posing a safety hazard, making it impossible for the life prediction method of the filter element in the existing water purification equipment to take into account both accuracy and safety. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a filter element life prediction method, device, water purification equipment and storage medium; the technical solution is as follows:

[0005] In one aspect, the present invention provides a filter element life prediction method, which is applied to a water purification device having a filter element, wherein the filter element comprises a water inlet end, a purified water outlet end, and a waste water outlet end; comprising:

[0006] When the filter element reaches an osmotic equilibrium state, detecting the current water output of the wastewater end;

[0007] Based on the first corresponding relationship, determining the current total dissolved solid concentration corresponding to the current wastewater volume; the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid concentrations of the water inlet end;

[0008] Based on the current total dissolved solids concentration, the remaining life of the filter element is predicted to obtain life prediction information; the life prediction information is used to indicate the remaining life status of the filter element.

[0009] Further, the water purification equipment includes a water inlet pipe connected to the water inlet end, a water outlet pipe connected to the pure water outlet end, and a wastewater pipe connected to the wastewater outlet end, the water inlet pipe is provided with a water inlet pump and a water inlet valve, the water outlet pipe is provided with a water outlet valve, and the wastewater pipe is provided with a wastewater valve; before detecting the current water output of the wastewater end, the method further includes:

[0010] When the water inlet pump, the water inlet valve, the water outlet valve and the wastewater valve are opened,

[0011] Obtaining the water inlet flow rate of the water inlet pipe;

[0012] When the water inlet flow rate reaches a first preset flow rate, controlling the water inlet pump, the water inlet valve, the water outlet valve and the waste water valve to close;

[0013] In response to the filter element reaching an osmotic equilibrium state, the wastewater valve is controlled to open, and the step of detecting the current water output of the wastewater end is performed.

[0014] Furthermore, the remaining life of the filter element is predicted based on the current total dissolved solids concentration, and the life prediction information obtained includes:

[0015] estimating the cumulative total water output of the water outlet pipeline according to the current total dissolved solids concentration and the current water output of the water outlet pipeline;

[0016] When the accumulated total water output exceeds the preset water output, it is determined that the life prediction information indicates that the remaining life of the filter element has expired.

[0017] Further, after estimating the cumulative total water output of the water outlet pipe according to the current total dissolved solids concentration and the current water output of the water outlet pipe, the method further includes:

[0018] When the accumulated total water output is less than or equal to the preset water output, it is determined that the life prediction information indicates the remaining life balance of the filter element.

[0019] Furthermore, when the filter element reaches an osmotic equilibrium state, before detecting the current water output of the wastewater end, the method further includes:

[0020] Detecting the current usage time of the water purification device;

[0021] If the current usage time meets the preset time condition, the step of detecting the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state is executed.

[0022] Furthermore, the current usage duration satisfies a preset duration condition including:

[0023] The current usage time indicates that the water purification device is powered on for the first time or the usage time of the water purification device reaches a preset usage time.

[0024] Furthermore, the method further comprises:

[0025] During the water purification process of the water purification device, detecting the current wastewater flow in the wastewater pipeline when the wastewater valve is open;

[0026] When the current wastewater flow rate is zero, the wastewater valve is controlled to be closed, the water inlet valve, the water outlet valve and the water inlet pump are controlled to be opened, and the water outlet time of the water outlet pipe is detected;

[0027] When the water outlet time reaches a preset time, the water inlet valve, the water inlet pump and the water outlet valve are controlled to be closed, the waste water valve is controlled to be opened, and the total amount of waste water in the waste water pipeline is detected;

[0028] When the total amount of wastewater is greater than or equal to the preset water volume, it is determined that the filter element is in an abnormal state.

[0029] In another aspect, the present invention provides a filter element life prediction device, comprising:

[0030] A wastewater end detection module, used to detect the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state;

[0031] A total dissolved solid matter concentration determination module, used to determine the current total dissolved solid matter concentration corresponding to the current wastewater volume based on a first corresponding relationship; the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid matter concentrations of the water inlet end;

[0032] A prediction module is used to predict the remaining life of the filter element based on the current total dissolved solids concentration to obtain life prediction information; the life prediction information is used to indicate the remaining life status of the filter element.

[0033] On the other hand, the present invention also provides a water purification device, including a filter element, wherein the filter element includes a water inlet end, a pure water outlet end and a wastewater end, and the remaining life of the filter element is predicted based on the filter element life prediction method described in any of the above items.

[0034] On the other hand, the present invention provides a storage medium, in which at least one instruction or at least one program is stored, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the filter element life prediction method as described above.

[0035] The implementation of the present invention has the following beneficial effects:

[0036] The present invention is based on RO reverse osmosis technology. When the osmotic pressure inside the filter element reaches an osmotic equilibrium state, there is a first corresponding relationship between the water output at the wastewater end and the total dissolved solids concentration (TDS value) at the water inlet end. The corresponding current total dissolved solids concentration is determined according to the detected current water output at the wastewater end, and then the remaining life of the filter element is predicted based on the current TDS value, so as to obtain life prediction information indicating the remaining life state of the filter element. This avoids the potential safety hazards such as metal rust or scaling caused by setting a TDS meter in the water path of the water purification equipment, and can accurately predict the remaining life of the filter element, thereby achieving a balance between the accuracy of filter element life prediction and the safety of the water purification equipment, thereby improving user satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A simplified waterway diagram of a water purification device provided by an embodiment of the present invention;

[0039] Figure 2 A logical structure diagram of a filter element life prediction method provided by an embodiment of the present invention;

[0040] Figure 3 A logical structure diagram of a triggering method for detecting the water output from a wastewater end provided by an embodiment of the present invention;

[0041] Figure 4 A logical structure diagram of a method for determining life prediction information provided by an embodiment of the present invention;

[0042] Figure 5 A logical structure diagram of a method for determining the usage time of a water purification device provided by an embodiment of the present invention;

[0043] Figure 6 A logical structure diagram of a method for detecting abnormal state of a filter element provided by an embodiment of the present invention;

[0044] Figure 7 A schematic diagram of the structure of a filter element life prediction device provided by an embodiment of the present invention;

[0045] Figure 8 The present invention provides a hardware structure block diagram of an electronic device for executing a filter element life prediction method according to an embodiment of the present invention.

[0046] The reference numerals correspond to:

[0047] 1-filter element, 2-water inlet pipe, 21-water inlet pump, 22-water inlet valve, 3-water outlet pipe, 31-water outlet valve, 4-wastewater pipe, 41-wastewater valve. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, and therefore cannot be understood as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention can be implemented in an order other than the following diagrams or the following descriptions. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0050] In view of the problem in the prior art that it is difficult to strike a balance between the accuracy of predicting the remaining life of a filter element in a water purification device and the safety of the water circuit of the water purification device, an embodiment of the present invention provides a filter element life prediction method, device, water purification device and storage medium. The filter element life prediction method is applied to the water purification device provided by the embodiment of the present invention, and the filter element life prediction method is implemented based on the filter element life prediction device provided by the embodiment of the present invention.

[0051] like Figure 1 As shown, an embodiment of the present invention provides a water purification device, including a filter element 1, which is used to filter water to achieve a water purification function. The filter element 1 includes a water inlet end, a pure water outlet end and a wastewater end. The water purification device also includes a water inlet pipe 2 connected to the water inlet end, a water outlet pipe 3 connected to the pure water outlet end and a wastewater pipe 4 connected to the wastewater outlet end. The water inlet pipe 2 is provided with an inlet pump 21 and an inlet valve 22. The inlet pump 21 is used to draw external water and provide pressure for the water in the inlet pipe 2. The inlet valve 22 is used to control the on-off of the inlet pipe 2; the outlet pipe 3 is provided with an outlet valve 31, and the outlet valve 31 is used to control the on-off of the outlet pipe; the wastewater pipe 4 is provided with a wastewater valve 41, which is used to control the on-off of the wastewater pipe 4.

[0052] In the prediction process of the filter element life prediction method, first, when the filter element reaches the osmotic equilibrium state, the current water output of the wastewater end is detected; then, based on the first corresponding relationship, the current total dissolved solids concentration corresponding to the current wastewater volume is determined; the first corresponding relationship is used to indicate the correspondence between multiple water outputs corresponding to the wastewater end and multiple total dissolved solids concentrations at the water inlet end; then, based on the current total dissolved solids concentration, the remaining life of the filter element is predicted to obtain life prediction information; the life prediction information is used to indicate the remaining life state of the filter element. The filter element life prediction method determines the corresponding current total dissolved solids concentration (TDS value) according to the detected current water output of the wastewater end, and then predicts the remaining life of the filter element based on the current TDS value, and obtains the life prediction information used to indicate the remaining life state of the filter element, avoiding the safety hazards such as metal rust or scaling that may be caused by setting a TDS meter in the water channel of the water purification equipment, and can accurately predict the remaining life of the filter element, achieving a balance between the accuracy of the filter element life prediction and the safety of the water purification equipment, and improving user satisfaction.

[0053] The following is a detailed description of the filter element life prediction method according to the embodiment of the present invention. Figure 2 , the method comprising:

[0054] S101, when the filter element reaches an osmotic equilibrium state, detecting the current water output of the wastewater end.

[0055] Among them, the filter element 1 adopts RO reverse osmosis technology, and a RO reverse osmosis membrane is arranged in the filter element. When the pressure on the concentrated water side is greater than the osmotic pressure, reverse osmosis occurs, and the solvent moves to the pure water side. The osmotic pressure depends on the concentration of the concentrated water side (i.e., the TDS value of the tap water in the inlet pipe) and the temperature. When the pressure of the inlet pump 21 (i.e., the water pressure on the concentrated water side) is fixed, the concentrated water side gradually decreases with the gradual decrease of the solvent, causing the osmotic pressure to gradually increase. After the pressure of the inlet pump 21 and the osmotic pressure reach equilibrium, no osmosis occurs, i.e., the osmotic equilibrium state is reached.

[0056] In some exemplary embodiments, the current water output from the wastewater end may be monitored by a sensor element, such as a flow meter, or may be determined by monitoring a liquid level signal from a water storage device at the wastewater end.

[0057] It should be noted that water pressure will affect the osmotic balance. In this embodiment, the wastewater end is set at the bottom of the filter element to control the water pressure. During the osmotic balance process, the water pressure is only the pressure generated by the water's own weight. However, after the osmosis is completed, the drainage pump cannot be used to drain the water. This avoids the situation where the drainage pump will cause a large change in the water pressure, resulting in the original osmotic balance being broken, and also avoids the problem that the water pump's generally poor consistency makes it impossible to evaluate the impact of the water pump on the osmotic balance.

[0058] Furthermore, the filter element commonly used at present is rolled, and the filter element in this embodiment is placed vertically, which avoids the adverse effect of the horizontal placement of the filter element on the osmotic balance phenomenon and is conducive to the discharge of concentrated water.

[0059] S103: Based on the first corresponding relationship, determine the current total dissolved solids concentration corresponding to the current wastewater volume.

[0060] Among them, the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid concentrations at the water inlet end. The first corresponding relationship between multiple water outputs and multiple TDS values ​​can be obtained through repeated laboratory tests and pre-stored in the form of a table. In this step, the table can be directly looked up based on the current wastewater volume to quickly determine the corresponding TDS value, saving computing power and improving efficiency.

[0061] According to the principle of osmotic equilibrium, under the condition of the same water inlet volume, the higher the initial concentration on the concentrated water side, the easier it is to reach the osmotic equilibrium state in advance, and the less water on the pure water side, that is, the more wastewater, the TDS value of the tap water at the inlet end can be determined according to the current water output at the wastewater end. The calculation is convenient and accurate, and there is no need to set a TDS meter in the pipes of the water purification equipment, which effectively avoids the safety hazards caused by metal rust or scaling and improves water quality safety.

[0062] In some exemplary embodiments, when the water temperature in the filter element is close to the inlet water temperature and the water pressure is constant, the inlet water volume of the inlet pipe is a, and the concentrated water side is pressurized by the inlet pump, causing reverse osmosis to occur inside the filter element. At this time, the water level on the concentrated water side drops, and the water level on the pure water side rises. In this process, the inlet pump is turned off, that is, the pressurization on the concentrated water side is canceled. Under the osmosis phenomenon, the water level on the concentrated water side is gradually generated and finally stops. The water volume on the concentrated water side when it stops is b. The proportional relationship between a and b corresponds to the TDS value, so that the current TDS value can be determined based on the current wastewater volume detected, and the calculation is accurate, convenient and efficient.

[0063] In addition, the TDS value of the water in the water inlet pipe is not fixed. In the process of determining the TDS value, the TDS value and the subsequent filter life prediction can be corrected multiple times through software algorithms to improve the accuracy of the subsequent filter life prediction.

[0064] In addition, during a single detection process, the water output from the wastewater end is 300mL~2L; it can be understood that the water output from the wastewater end can be any point value between 300mL~2L; illustratively, the water output from the wastewater end can be 300mL, 500mL, 800mL, 1L, 1200mL, 1500mL, 2L, etc.; in this way, it can avoid excessive prediction errors caused by inaccurate measurements due to insufficient water volume, and avoid waste caused by excessive water volume due to limitations on the volume of the water purification equipment.

[0065] During the detection process, the water temperature in the filter element is 10℃~25℃; it can be understood that the water temperature can be any point value between 10℃~25℃; illustratively, the water temperature can be 10℃, 12℃, 15℃, 20℃, 23℃, 25℃, etc.; the tested water temperature is close to the tap water temperature, avoiding the influence of temperature changes on the osmotic balance, and improving the water output at the wastewater end and the accuracy and reliability of the TDS value.

[0066] S105, predicting the remaining life of the filter element based on the current total dissolved solids concentration to obtain life prediction information.

[0067] The life prediction information is used to indicate the remaining life status of the filter element; if the filter element still has a remaining life, it means that the filter element can still be used; if the filter element's life is terminated, it means that the filter element can no longer perform an effective filtering function and needs to be replaced or cleaned; the method of determining the current TDS value based on the current wastewater volume and then predicting the life of the filter element can greatly improve the prediction accuracy, avoid the waste of manpower and filter elements caused by premature replacement of the filter element, reduce the failure rate of the filter element and water purification equipment, improve water quality safety, and further avoid the safety risks that may arise from installing a TDS meter in the water purification equipment, greatly improving user satisfaction.

[0068] Specifically, Figure 3 As shown, before detecting the current water output of the wastewater end, that is, before step S101, the method further includes:

[0069] S202, obtaining the water inlet flow rate of the water inlet pipe when the water inlet pump, the water inlet valve, the water outlet valve and the wastewater valve are in an open state.

[0070] S204, when the water inlet flow rate reaches a first preset flow rate, controlling the water inlet pump, the water inlet valve, the water outlet valve and the waste water valve to close.

[0071] S206, in response to the filter element reaching an osmotic equilibrium state, controlling the wastewater valve to open, and executing the step of detecting the current water output of the wastewater end.

[0072] Among them, first, each pipeline in the water purification equipment is connected so that the incoming water can flow into the water inlet pipe, the water outlet pipe and the wastewater pipe; then, the water inlet flow rate is monitored in real time and judged whether it reaches the first preset flow rate. If it does not reach the first preset flow rate, it means that the filter element and each pipeline are not full of water, and the TDS value cannot be determined according to the current water output. The water inlet pump, the water inlet valve, the water outlet valve and the wastewater valve are kept in the open state until the water inlet flow rate reaches the first preset flow rate, indicating that the filter element and each pipeline are full of water. At this time, the infiltration phenomenon can occur so as to facilitate the subsequent osmotic equilibrium state. Under this condition, the TDS value can be accurately estimated. At this time, the water inlet pump, the water inlet valve, the water outlet valve and the wastewater valve are controlled to be closed, so that the inside of the filter element is in a relatively closed state, so that the infiltration phenomenon can proceed stably until the osmotic equilibrium state is reached. The wastewater valve can be controlled to open to detect the current water output at the wastewater end, thereby improving the detection accuracy and reliability of the current water output.

[0073] In some exemplary embodiments, the first preset flow rate may be set according to actual conditions. The first preset flow rate may be a specific value or a range of values, which is not specifically limited in the present invention.

[0074] In some exemplary embodiments, whether the filter element reaches the osmotic equilibrium state can be determined by monitoring the standing time. When the standing time does not reach the preset standing time, it means that the osmotic process is still occurring inside the filter element, and the state after step S204 is maintained to continue the osmotic process. When the standing time reaches the preset standing time, it means that the filter element has fully reached the osmotic equilibrium state. In some exemplary embodiments, the preset standing time can be set according to actual conditions. The preset standing time can be a specific value, such as 1h, or a value range, such as 1h~2h. The present invention does not make specific limitations on this.

[0075] Specifically, the preset standing time is 1h to 4h; it can be understood that the preset standing time can be any point value between 1h and 4h; illustratively, the preset standing time can be 1h, 1.5h, 2h, 2.5h, 3h, 3.5h, 4h, etc.; in this way, it can ensure that the infiltration phenomenon is fully completed, improve the estimated accuracy of the TDS value, and avoid adverse effects on the normal use of the water purification equipment.

[0076] Specifically, Figure 4 As shown, the remaining life of the filter element is predicted based on the current total dissolved solids concentration, and the life prediction information obtained includes:

[0077] S301, estimating the cumulative total water output of the water outlet pipe according to the current total dissolved solids concentration and the current water output of the water outlet pipe.

[0078] S303: When the accumulated total water output exceeds a preset water output, determining that the life prediction information indicates that the remaining life of the filter element has expired.

[0079] Specifically, after estimating the cumulative total water output of the water output pipeline according to the current total dissolved solids concentration and the current water output of the water output pipeline, the method further includes:

[0080] S305: When the accumulated total water output is less than or equal to a preset water output, determine that the life prediction information indicates the remaining life balance of the filter element.

[0081] Among them, the TDS value can be further converted into a coefficient α, and the cumulative total water output c of the outlet pipe can be estimated based on the coefficient α and the recorded current water output β of the outlet pipe, where c=c0+α×β, and the coefficient α and the current water output β of the outlet pipe are cleared to execute the subsequent S303 step or S305 step. The estimation process is simple, efficient and accurate.

[0082] The preset water output is the total water output that can be used by a filter element with a coefficient α of 1 under a fixed TDS setting value; if the cumulative total water output is greater than the preset water output, it indicates that the filter element has reached the end of its life and needs to be replaced or cleaned to avoid causing a greater failure in the water purification equipment; and if the cumulative total water output is less than or equal to the preset water output, it indicates that the filter element still has some life left and can continue to be used without causing any failure, and also avoids waste of filter elements caused by frequent replacement. At this time, after step S305, you can return to the initial stage of the filter element life prediction method, such as the following step S402, and restart a new round of prediction.

[0083] In some exemplary embodiments, the preset water output may be set according to actual conditions. The preset water output may be a specific value or a range of values, which is not specifically limited in the present invention.

[0084] In addition, when the TDS value is abnormal, an alarm signal can also be directly generated. The alarm signal may include at least one of an indicator light signal and a buzzer signal to indicate that the indicator light switches to a lit state and the buzzer sounds, thereby giving an alarm to the user and prompting the user to check whether the water quality is abnormal.

[0085] Specifically, Figure 5 As shown, when the filter element reaches an osmotic equilibrium state, before detecting the current water output of the wastewater end, that is, before step S101, the method further includes:

[0086] S402, detecting the current usage time of the water purification device;

[0087] S404, if the current usage time meets the preset time condition, execute the step of detecting the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state.

[0088] Among them, the preset time condition is used to indicate whether the water purification equipment has reached the set usage time, so as to determine whether the filter element needs to be replaced; if the current usage time meets the preset time condition, step S101 is further executed. If the current usage time does not meet the preset time condition, it means that the filter element can still be used, and there is no need to further determine the life of the filter element by calculating the TDS value. The prediction accuracy is good and computing power is greatly saved.

[0089] Specifically, the current usage duration meets the preset duration condition including:

[0090] The current usage time indicates that the water purification device is powered on for the first time or the usage time of the water purification device has reached the preset usage time.

[0091] Among them, in the process of judging in step S404, it is first judged whether the water purification device is powered on for the first time. If so, the current usage time meets the preset time condition, and step S101 is directly executed to further predict the remaining life of the filter element; if it is not the first time to be powered on, it is further judged whether the usage time has reached the preset usage time.

[0092] If the usage time has not reached the preset usage time, it means that the filter element still has a remaining life. There is no need to further calculate the TDS value based on the water output at the wastewater end and then predict the remaining life of the filter element. At this time, you can return to step S402 to re-test to improve the real-time performance of the prediction method, with high prediction accuracy and good prediction reliability. If the usage time reaches the preset usage time, the current usage time will be cleared, and then step S101 will be directly executed to further predict the remaining life of the filter element, improve the prediction precision, and further improve the prediction accuracy and reliability.

[0093] In some exemplary embodiments, the preset usage time can be set according to actual conditions. The preset usage time can be a specific value, such as a preset usage time of 1 month, or a value range of 1 month to 1.5 months. The present invention does not make any specific limitation on this.

[0094] Specifically, Figure 6 As shown, the method also includes:

[0095] S501, during the water purification process of the water purification device, detecting the current wastewater flow in the wastewater pipe with the wastewater valve open.

[0096] S503, when the current wastewater flow is zero, control the wastewater valve to close, control the water inlet valve, the water outlet valve and the water inlet pump to open, and detect the water outlet time of the water outlet pipe.

[0097] S505, when the water outlet time reaches a preset time, the water inlet valve, the water inlet pump and the water outlet valve are controlled to be closed, the wastewater valve is controlled to be opened, and the total amount of wastewater in the wastewater pipe is detected.

[0098] S507: When the total amount of wastewater is greater than or equal to a preset amount of wastewater, determine that the filter element is in an abnormal state.

[0099] In this step, when the filter element is clogged or the filter element has a short life, the pore size of the RO filter membrane inside the filter element decreases, the permeation rate slows down, and the amount of clean water output per unit time and per unit water inlet decreases, resulting in an increase in the amount of wastewater. By detecting the amount of wastewater, it is possible to determine whether the filter element is operating normally, thereby improving the safety and stability of the water purification process of the water purification equipment.

[0100] In some exemplary embodiments, the preset time can be set according to actual conditions. The preset time can be a specific value, such as 1 minute, or a value range, such as 1 minute to 2 minutes. The present invention does not make any specific limitation on this.

[0101] The preset water volume is used to indicate the critical water volume at which the filter element becomes abnormal or ends its life. In some exemplary embodiments, the preset water volume can be set according to actual conditions. The preset water volume can be a specific value or a range of values, and the present invention does not specifically limit this.

[0102] Among them, firstly, the wastewater valve is controlled to be opened to drain the wastewater in the filter element, and the current wastewater flow in the wastewater pipe is detected to determine whether the wastewater in the filter element has been drained; then, if it is detected that the current wastewater flow is not zero, it means that the wastewater in the filter element has not been drained, and the wastewater valve is kept in an open state until the current wastewater flow is detected to be zero, indicating that the wastewater in the filter element has been drained. At this time, the wastewater valve is controlled to be closed, the water inlet valve, the water outlet valve and the water inlet pump are controlled to be opened, and the water outlet time of the water outlet pipe is detected; if the water outlet time does not reach the preset time, the S is kept In step 503, the wastewater valve is closed, and the water inlet valve, the water outlet valve and the water inlet pump are opened until it is detected that the water outlet time reaches the preset time; then, the relationship between the water inlet valve, the water inlet pump and the water outlet valve is controlled, and the wastewater valve is controlled to open, and the total amount of wastewater in the wastewater pipe is detected. If the total amount of wastewater is less than the preset water volume, it means that the filter element can still be used normally. If the wastewater volume is greater than or equal to the preset water volume, it means that the filter element is abnormal or has reached the end of its life and needs to be replaced or cleaned. At this time, a warning signal can be generated to remind the user to replace the filter element to avoid malfunction of the water purification equipment.

[0103] Corresponding to the filter element life prediction method provided in the above embodiment of the present invention, the filter element life prediction device provided in the embodiment of the present invention can implement the filter element life prediction method in the above method embodiment, wherein, Figure 7 As shown, the filter element life prediction device may include:

[0104] The wastewater end detection module 710 is used to detect the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state;

[0105] The TDS determination module 720 is used to determine the current total dissolved solid concentration corresponding to the current wastewater volume based on a first corresponding relationship; the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid concentrations of the water inlet end;

[0106] The prediction module 730 is used to predict the remaining life of the filter element based on the current total dissolved solids concentration to obtain life prediction information; the life prediction information is used to indicate the remaining life status of the filter element.

[0107] Specifically, the filter element life prediction device may also include:

[0108] An inlet flow detection module, used to obtain the inlet flow of the inlet pipe when the inlet pump, the inlet valve, the outlet valve and the wastewater valve are opened;

[0109] A water circuit control module, used for controlling the water inlet pump, the water inlet valve, the water outlet valve and the waste water valve to close when the water inlet flow rate reaches a first preset flow rate;

[0110] A response control module is used to control the wastewater valve to open in response to the filter element reaching an osmotic equilibrium state, and execute the step of detecting the current water output of the wastewater end.

[0111] Specifically, the prediction module 730 may include:

[0112] A cumulative water output estimation module, used for estimating the cumulative total water output of the water output pipeline according to the current total dissolved solids concentration and the current water output of the water output pipeline;

[0113] The first filter element life determination module is used to determine that the life prediction information indicates that the remaining life of the filter element has expired when the cumulative total water output exceeds a preset water output.

[0114] Specifically, the prediction module 730 may further include:

[0115] The second filter element life determination module is used to determine the remaining life balance of the filter element indicated by the life prediction information when the cumulative total water output is less than or equal to the preset water output.

[0116] Specifically, the filter element life prediction device may also include:

[0117] A duration detection module, used to detect the current usage duration of the water purification device;

[0118] The duration judgment module is used to execute the step of detecting the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state if the current usage duration meets the preset duration condition.

[0119] Specifically, the filter element life prediction device may also include:

[0120] A wastewater flow detection module, used to detect the current wastewater flow in the wastewater pipeline when the wastewater valve is open during the water purification process of the water purification equipment;

[0121] A first control detection module is used to control the wastewater valve to close, control the water inlet valve, the water outlet valve and the water inlet pump to open, and detect the water outlet time of the water outlet pipe when the current wastewater flow rate is zero;

[0122] A second control and detection module is used to control the water inlet valve, the water inlet pump and the water outlet valve to close, control the wastewater valve to open, and detect the total amount of wastewater in the wastewater pipeline when the water outlet time reaches a preset time;

[0123] The filter element abnormal state confirmation module is used to determine that the filter element is in an abnormal state when the total amount of wastewater is greater than or equal to a preset water volume.

[0124] It should be noted that the filter life prediction device provided in the above embodiment, when realizing its function, only uses the division of the above functional modules as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the filter life prediction device provided in the above embodiment belongs to the same concept as the method embodiment. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0125] The filter element life prediction device includes a processor and a memory, wherein the processor (or CPU (Central Processing Unit)) is the core component of the filter element life prediction device, and its function is mainly to interpret memory instructions and process data fed back by each module; the structure of the processor is roughly divided into an operation logic component and a register component, etc. The operation logic component mainly performs related logical calculations (such as shift operations, logical operations, fixed-point or floating-point arithmetic operations and address operations, etc.), and the register component is used to temporarily store instructions, data and addresses.

[0126] The memory is a memory device that can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system, which may include but is not limited to: Windows system (an operating system), Linux (an operating system), etc., and the present invention does not limit this; in addition, it can also store application programs required for functions, for example, at least one instruction suitable for being loaded and executed by the processor is also stored in the storage space of the memory, and these instructions can be one or more computer programs (including program codes); and the data storage area can store data created according to the use of the device, etc.; accordingly, the memory can also include a memory controller to provide the processor with access to the memory.

[0127] The method embodiments provided in the embodiments of the present invention may be executed in electronic devices such as mobile terminals, computer terminals, servers or similar computing devices. Figure 8 1 is a hardware structure block diagram of an electronic device for predicting the life of a filter element provided by an embodiment of the present invention. Figure 8As shown, the electronic device 800 may have relatively large differences due to different configurations or performances, and may include one or more central processing units (CPU) 810 (the processor 810 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 830 for storing data, and one or more storage media 820 (such as one or more mass storage devices) for storing application programs 823 or data 822. Among them, the memory 830 and the storage medium 820 can be short-term storage or permanent storage. The program stored in the storage medium 820 may include one or more modules, each of which may include a series of instruction operations in the electronic device. Furthermore, the central processing unit 810 can be configured to communicate with the storage medium 820 to execute a series of instruction operations in the storage medium 820 on the electronic device 800. The electronic device 800 may also include one or more power supplies 860, one or more wired or wireless network interfaces 850, one or more input and output interfaces 840, and / or one or more operating systems 821, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

[0128] The input / output interface 840 may be used to receive or send data via a network. The specific example of the network may include a wireless network provided by a communication provider of the electronic device 800. In one example, the input / output interface 840 includes a network adapter (Network Interface Controller, NIC), which may be connected to other network devices via a base station so as to communicate with the Internet. In one example, the input / output interface 840 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0129] It can be understood by those skilled in the art that Figure 8 The structure shown is for illustration only and does not limit the structure of the above electronic device. Figure 8 More or fewer components as shown, or with Figure 8 Different configurations are shown.

[0130] An embodiment of the present invention also provides a storage medium, in which at least one instruction or at least one program is stored, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the filter element life prediction method described above; optionally, the storage medium can be located in at least one network server among multiple network servers of a computer network; in addition, the storage medium can include but is not limited to random access memory (RAM), read-only memory (ROM), non-volatile memory (NVM), U disk, mobile hard disk, disk storage device, flash memory device, other volatile solid-state storage devices and other storage media that can store program codes.

[0131] According to one aspect of the present invention, a computer program product or a computer program is provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the above-mentioned various optional implementations.

[0132] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0133] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0134] What is described above are only some embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that the present invention may be subject to various changes and improvements, and any modifications, equivalent substitutions and improvements made in accordance with the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A filter element life prediction method, applied to a water purification device having a filter element, wherein the filter element comprises a water inlet end, a clean water outlet end and a waste water outlet end; characterized in that: include: When the filter element reaches an osmotic equilibrium state, detecting the current water output of the wastewater end; Based on the first corresponding relationship, determining the current total dissolved solid concentration corresponding to the current wastewater volume; the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid concentrations of the water inlet end; Based on the current total dissolved solids concentration, the remaining life of the filter element is predicted to obtain life prediction information; the life prediction information is used to indicate the remaining life status of the filter element.

2. The filter element life prediction method according to claim 1, characterized in that: The water purification equipment comprises a water inlet pipe connected to the water inlet end, a water outlet pipe connected to the pure water outlet end, and a wastewater pipe connected to the wastewater outlet end, the water inlet pipe is provided with a water inlet pump and a water inlet valve, the water outlet pipe is provided with a water outlet valve, and the wastewater pipe is provided with a wastewater valve; before detecting the current water output of the wastewater end, the method further comprises: When the water inlet pump, the water inlet valve, the water outlet valve and the wastewater valve are opened, Obtaining the water inlet flow rate of the water inlet pipe; When the water inlet flow rate reaches a first preset flow rate, controlling the water inlet pump, the water inlet valve, the water outlet valve and the waste water valve to close; In response to the filter element reaching an osmotic equilibrium state, the wastewater valve is controlled to open, and the step of detecting the current water output of the wastewater end is performed.

3. The filter element life prediction method according to claim 2, characterized in that: The remaining life of the filter element is predicted based on the current total dissolved solids concentration, and the life prediction information obtained includes: estimating the cumulative total water output of the water outlet pipeline according to the current total dissolved solids concentration and the current water output of the water outlet pipeline; When the accumulated total water output exceeds the preset water output, it is determined that the life prediction information indicates that the remaining life of the filter element has expired.

4. The filter element life prediction method according to claim 3, characterized in that: After estimating the cumulative total water output of the water outlet pipeline according to the current total dissolved solids concentration and the current water output of the water outlet pipeline, the method further includes: When the accumulated total water output is less than or equal to the preset water output, it is determined that the life prediction information indicates the remaining life balance of the filter element.

5. The filter element life prediction method according to any one of claims 1 to 4, characterized in that: When the filter element reaches an osmotic equilibrium state, before detecting the current water output of the wastewater end, the method further includes: Detecting the current usage time of the water purification device; If the current usage time meets the preset time condition, the step of detecting the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state is executed.

6. The filter element life prediction method according to claim 5, characterized in that: The current usage duration meeting the preset duration condition includes: The current usage time indicates that the water purification device is powered on for the first time or the usage time of the water purification device reaches a preset usage time.

7. The filter element life prediction method according to any one of claims 1 to 4, characterized in that: The method further comprises: During the water purification process of the water purification device, detecting the current wastewater flow in the wastewater pipeline when the wastewater valve is open; When the current wastewater flow rate is zero, the wastewater valve is controlled to be closed, the water inlet valve, the water outlet valve and the water inlet pump are controlled to be opened, and the water outlet time of the water outlet pipe is detected; When the water outlet time reaches a preset time, the water inlet valve, the water inlet pump and the water outlet valve are controlled to be closed, the waste water valve is controlled to be opened, and the total amount of waste water in the waste water pipeline is detected; When the total amount of wastewater is greater than or equal to the preset water volume, it is determined that the filter element is in an abnormal state.

8. A filter element life prediction device, characterized in that: include: A wastewater end detection module, used to detect the current water output of the wastewater end when the filter element reaches an osmotic equilibrium state; A total dissolved solid matter concentration determination module, used to determine the current total dissolved solid matter concentration corresponding to the current wastewater volume based on a first corresponding relationship; the first corresponding relationship is used to indicate the corresponding relationship between multiple water outputs corresponding to the wastewater end and multiple total dissolved solid matter concentrations of the water inlet end; A prediction module is used to predict the remaining life of the filter element based on the current total dissolved solids concentration to obtain life prediction information; the life prediction information is used to indicate the remaining life status of the filter element.

9. A water purification device, characterized in that: It comprises a filter element, the filter element comprises a water inlet end, a pure water outlet end and a waste water end, and the remaining life of the filter element is predicted based on the filter element life prediction method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement the filter element life prediction method as described in any one of claims 1-7.

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