Filter element service life detection method and device, water treatment equipment and storage medium

Abstract

The invention relates to the technical field of water purification, and provides a filter element service life detection method and device, water treatment equipment and a storage medium. A downstream soluble substance content value of a to-be-detected filter element is detected, and a soluble substance content threshold value is determined according to the type of the to-be-detected filter element; finally, whether the service life of the to-be-detected filter element reaches a preset replacement standard or not is detected according to the downstream soluble substance content value and the determined soluble substance content threshold value, and intelligence and automation of filter element service life detection are achieved. Compared with a traditional replacement mode based on experience or a fixed period, the decision-making mode based on data driving is more scientific and accurate.

Description

Technical Field

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

[0002] With the improvement of modern living standards, people have higher and higher requirements for the quality of drinking water. In order to ensure the safety and purity of drinking water, various water purification equipment have emerged. Among them, the filter element is the core component of the water purification equipment. Its performance and service life are directly related to the water purification effect and the health of users.

[0003] However, traditional filter replacement often relies on a fixed time period or the user's subjective judgment. This approach may not only lead to premature replacement of the filter, resulting in a waste of resources, but may also affect the water purification effect due to untimely replacement of the filter, and even pose a potential threat to the user's health. Summary of the invention

[0004] Based on this, the embodiments of the present application propose a filter element life detection method, device, water treatment equipment and storage medium, aiming to solve the technical problem of low accuracy of filter element life detection in the prior art.

[0005] The first aspect of the present application provides a filter element life detection method, the method comprising:

[0006] Detect the dissolved substance content value downstream of the filter element to be tested;

[0007] It is determined whether the life of the filter element to be tested has reached a preset replacement standard based on the downstream soluble substance content value.

[0008] Optionally, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value includes:

[0009] Obtaining a soluble substance content threshold value according to the type of the filter element to be tested;

[0010] Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the downstream soluble substance content value and the soluble substance content threshold.

[0011] Optionally, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value includes:

[0012] Detecting the upstream soluble substance content value of the filter element to be tested;

[0013] Obtaining a soluble substance content difference according to the upstream soluble substance content value and the downstream soluble substance content value;

[0014] Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the difference in the soluble substance content.

[0015] Optionally, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the difference in the soluble substance content includes:

[0016] Calculating a ratio between the soluble substance content difference and the upstream soluble substance content value;

[0017] Obtaining a ratio threshold value according to the type of the filter element to be tested;

[0018] It is determined whether the life of the filter element to be tested reaches a preset replacement standard according to the ratio value and the ratio threshold value.

[0019] Optionally, the filter element to be tested is an RO filter element, and the filter element life detection method further includes:

[0020] When the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the RO filter element, and the proportion value is higher than the proportion threshold value corresponding to the RO filter element, the remaining service life or the water production capacity of the RO filter element is determined according to the proportion value and a preset proportion-life relationship curve.

[0021] Optionally, the filter element to be tested is a mineralized filter element, and the filter element life detection method further includes:

[0022] When the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the mineralized filter element, and the ratio value is higher than the ratio threshold value corresponding to the mineralized filter element, detecting the upstream water flow velocity of the filter element to be tested;

[0023] Obtaining a proportional life relationship curve matching the water flow velocity;

[0024] The remaining service life or the amount of water that can be produced of the mineralized filter element is determined based on the ratio value and the matching ratio-life relationship curve.

[0025] Optionally, the filter element life detection method further includes:

[0026] Detecting whether the filter element to be tested is installed;

[0027] When it is detected that the filter element to be tested is not installed, a preset user prompt is issued;

[0028] When it is detected that the filter element to be tested is installed, the detection of the downstream soluble substance content value of the filter element to be tested is performed.

[0029] A second aspect of the present application provides a filter element life detection device, the device comprising:

[0030] A detection module, used to detect the downstream dissolved substance content value of the filter element to be tested;

[0031] The judgment module is used to judge whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value.

[0032] The third aspect of the present application provides a water treatment device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the filter element life detection method when executing the computer program.

[0033] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the filter element life detection method are implemented.

[0034] The filter element life detection method, device, water treatment equipment and storage medium provided in the embodiments of the present application detect the downstream soluble substance content value (such as total dissolved solids value or conductivity) of the filter element to be tested, and determine the soluble substance content threshold value according to the type of the filter element to be tested, and finally detect whether the life of the filter element to be tested reaches the preset replacement standard based on the downstream soluble substance content value and the determined soluble substance content threshold value, thereby realizing the intelligent and automated detection of the filter element life. This data-driven decision-making method is more scientific and accurate than the traditional experience-based or fixed-cycle replacement method. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a flow chart of the filter element life detection method provided in the first embodiment of the present application.

[0037] Figure 2 It is a flow chart of the filter element life detection method provided in the second embodiment of the present application.

[0038] Figure 3 It is a flow chart of the filter element life detection method provided in the third embodiment of the present application.

[0039] Figure 4 It is a schematic diagram of the positions of the RO filter element and the mineralization filter element provided in the embodiments of the present application.

[0040] Figure 5 It is a flow chart of the filter element life detection method provided in the fourth embodiment of the present application.

[0041] Figure 6 It is a functional module diagram of the filter element life detection device provided in the fifth embodiment of the present application.

[0042] Figure 7 It is a structural schematic diagram of the water treatment equipment provided in the sixth embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The filter element life detection method provided in the embodiment of the present application is mainly used in water treatment equipment in home life or office places to detect the life of one or more filter elements in the water treatment equipment.

[0045] Water treatment equipment is a device used to improve water quality, remove impurities from water or adjust water quality, such as a water purifier, a water purifier, etc. The water treatment equipment in the embodiment of the present application is a water purifier with a mineral mineralization function. A water purifier with a mineral mineralization function refers to a type of water purification equipment that can deeply purify tap water and add mineral elements required by the human body to make the water quality reach a standard similar to that of mineral water. After removing harmful substances, the water purifier with a mineral mineralization function reincorporates minerals such as calcium, magnesium, iron, and zinc required by the human body into the water by adding a mineral-rich filter element. These minerals exist in an ionic state and are easier for the human body to absorb.

[0046] The water treatment equipment may include a filter element assembly, a filter, a reverse osmosis device, etc. The filter element assembly in the embodiment of the present application may include one or more alkaline filter elements, which are filter elements or materials used for water treatment, and their main function is to convert acidic water into alkaline water, usually by reducing the acidity of water through negative ions, thereby increasing the alkalinity of water.

[0047] One alkaline filter element corresponds to one alkaline water path. When multiple alkaline filter elements are used, the water paths between the multiple alkaline filter elements are usually set in parallel to ensure that the water flow can pass through each filter element evenly.

[0048] In the embodiment of the present application, the alkaline filter element contains alkaline substances. For multiple alkaline filter elements, the types and dissolution rates of alkaline substances contained in different alkaline filter elements are different. Therefore, the alkaline strengths of different alkaline filter elements are different, achieving different alkaline treatment effects.

[0049] The following uses two alkaline filter elements as an example to illustrate the interaction between alkaline filter elements and their effects in water treatment:

[0050] For example, in a filter element assembly, the first alkaline filter element is filled with weakly acidic ore, while the second alkaline filter element is filled with ore rich in calcium and magnesium. When the water flows through the first alkaline filter element first, the acidic substances precipitated from the first alkaline filter element can effectively promote the precipitation of calcium and magnesium in the subsequent second alkaline filter element. This promotion effect not only improves the mineralization efficiency, but also makes the water rich in minerals that are beneficial to the human body after passing through the entire filter element assembly.

[0051] For example, in a filter element assembly, the first alkaline filter element is filled with weak alkaline ore, while the second alkaline filter element is filled with zinc and copper ore. When the water flows through the first alkaline filter element first, the alkaline substances precipitated from the first alkaline filter element will inhibit the precipitation of zinc and copper elements in the second alkaline filter element. This inhibition relationship can control the content of certain minerals in water.

[0052] For example, in a filter element assembly, the first alkaline filter element is filled with alkaline ore of different contents, while the second alkaline filter element contains calcium and magnesium ore of different contents. By adjusting the flow rate of the water flow channel between the first alkaline filter element and the second alkaline filter element, the concentration of different mineralized elements can be flexibly adjusted to meet the specific needs of different users for water quality.

[0053] In the design of the filter element assembly, the arrangement and combination of different filter elements are also crucial. For example, a combination of a surface strong alkaline material (such as brucite) and an inner weak alkaline material (such as calcite) is used. This design allows the filter element to quickly release strong alkaline substances in the early stage, and as the use time goes by, the inner weak alkaline material gradually takes effect, thus ensuring that the filter element can maintain a moderate alkalinity strength throughout its service life.

[0054] By designing and combining different types of alkaline filter elements and their water path settings, precise mineralization of water can be achieved. This not only helps to improve the safety and health of water quality, but also meets the personalized needs of different users for water taste and nutritional value.

[0055] In order to ensure the safety and purity of drinking water, various water purification equipment has emerged. Among them, the filter element is the core component of water purification equipment. Its performance and service life are directly related to the water purification effect and the health of users. However, traditional filter element replacement often depends on a fixed time cycle or the user's subjective judgment. This method may not only lead to premature replacement of the filter element, resulting in a waste of resources, but also may affect the water purification effect due to untimely replacement of the filter element, and even pose a potential threat to the health of users.

[0056] In order to realize intelligent and automatic detection of filter life, the embodiment of the present application proposes a filter life detection method for water treatment equipment used in home life or office. The method aims to improve the accuracy and timeliness of filter replacement by real-time monitoring of filter life.

[0057] Figure 1 A flow chart of a filter element life detection method provided in an embodiment of the present application is provided, wherein the filter element life detection method comprises the following steps.

[0058] S11, detecting the soluble substance content value downstream of the filter element to be tested.

[0059] The filter element to be tested refers to a filter element product that needs to be tested for life. The filter element to be tested can be a reverse osmosis (RO) filter element or a mineralized filter element (alkaline filter element).

[0060] In the field of water treatment, the soluble matter content value is usually used to measure the total amount of dissolved matter in water, which may include salts, minerals, organic matter, etc. By detecting the soluble matter content value, the quality of water and the effect of water treatment equipment can be evaluated. In the embodiment of the present application, in order to more accurately detect the life of the filter element in the water treatment equipment, the soluble matter content value may include the total dissolved solids value or the conductivity.

[0061] The total dissolved solids (TDS) value refers to the total amount of solids dissolved in water, including both inorganic and organic matter. The unit of measurement is mg / L (1mg / L=1ppm), indicating how many milligrams of total dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved matter is contained in the water. Generally, the conductivity value can be used to roughly understand the salt content in the solution. The higher the conductivity, the higher the salt content, and the higher the TDS value. A TDS sensor is an instrument that reflects the mineralization degree of water quality by measuring the conductivity of water.

[0062] Conductivity is a measure of the concentration of ions in water, and it reflects the ability of dissolved substances in water to conduct electricity. Dissolved substances in water form ions, which can transmit electric current when moving in water, so conductivity can be used to evaluate the ion concentration in water. The higher the conductivity, the higher the ion concentration in the water, and it may contain more dissolved substances. During the water treatment process, conductivity can be used to monitor changes in water quality and evaluate the effectiveness of water treatment equipment.

[0063] A sensor may be arranged downstream of the filter element to be tested, and the sensor is used to detect the dissolved substance content value downstream of the filter element to be tested. The dissolved substance content value downstream is the dissolved substance content value after the water flows through the filter element.

[0064] S12, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value.

[0065] After detecting the downstream soluble substance content value, the life corresponding to the downstream soluble substance content value can be queried according to the preset database table and the actual use time, and then it can be judged whether the life of the filter element to be tested reaches the preset replacement standard. The database table records the corresponding relationship between the soluble substance content value, the use time and the filter element life.

[0066] The embodiment of the present application can accurately evaluate the actual filtering effect of the filter element by detecting the downstream soluble substance content value of the filter element, thereby judging whether the life of the filter element to be tested reaches the preset replacement standard based on the actual filtering effect, thereby avoiding the situation of replacing the filter element too early or too late.

[0067] In order to further improve the detection accuracy of the filter element life, while considering the downstream soluble substance content value of the filter element to be tested, combined with some other parameters, jointly determine whether the life of the filter element to be tested has reached the preset replacement standard. Among them, the second embodiment is to jointly determine whether the life of the filter element to be tested has reached the preset replacement standard based on the type of the filter element to be tested and the downstream soluble substance content value, and the third embodiment is to jointly determine whether the life of the filter element to be tested has reached the preset replacement standard based on the type of the filter element to be tested, the upstream soluble substance content value and the downstream soluble substance content value.

[0068] Figure 2 A flow chart of a filter element life detection method provided in an embodiment of the present application is provided, wherein the filter element life detection method comprises the following steps.

[0069] S21, detecting the soluble substance content value downstream of the filter element to be tested.

[0070] A TDS sensor or conductivity meter is set downstream of the filter element to be tested. The TDS sensor is used to detect the TDS value downstream of the filter element to be tested, and the conductivity meter is used to detect the conductivity downstream of the filter element to be tested. The TDS value or conductivity downstream of the filter element to be tested is used as the downstream soluble substance content value of the filter element to be tested.

[0071] S22, obtaining a soluble substance content threshold value according to the type of the filter element to be tested.

[0072] Different types of filter elements have different removal capabilities and lifespans for soluble substances in water due to differences in type (RO filter element, mineralized filter element, etc.) and / or material (such as activated carbon, ceramic, polypropylene, etc.), structure (such as granular, fibrous, membrane, etc.), filtration accuracy (such as microfiltration, ultrafiltration, reverse osmosis, etc.). Therefore, it is necessary to set corresponding thresholds for soluble substance content for filter elements of different types and / or materials, structures, filtration accuracy, etc. The type, material, structure, filtration accuracy, etc. of the filter element can be obtained from the filter element's manual, label, or information provided by the manufacturer.

[0073] After obtaining the type and / or material, structure, filtration accuracy and other information of the filter element to be tested, the soluble substance content threshold that matches the type and / or material, structure, filtration accuracy and other information of the filter element to be tested is queried from the locally stored database table.

[0074] Exemplarily, assuming that the filter element to be tested is an RO filter element, the soluble substance content threshold is a preset first soluble substance content threshold; assuming that the filter element to be tested is a mineralized filter element, the soluble substance content threshold is a preset second soluble substance content threshold.

[0075] S23, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value and the soluble substance content threshold value.

[0076] The measured downstream soluble substance content value is compared with the obtained soluble substance content threshold value. If the downstream soluble substance content value is lower than or equal to the obtained soluble substance content threshold value, it indicates that the filtering effect of the filter element is good, and it is determined that the life of the filter element to be tested has not reached the preset replacement standard. If the downstream soluble substance content value is higher than the obtained soluble substance content threshold value, it may indicate that the filtering capacity of the filter element has decreased, and it is determined that the life of the filter element to be tested has reached the preset replacement standard.

[0077] This application detects the downstream soluble substance content value (such as total dissolved solids value or conductivity) of the filter element to be tested, determines the soluble substance content threshold value according to the type of the filter element to be tested, and finally detects whether the life of the filter element to be tested reaches the preset replacement standard based on the downstream soluble substance content value and the determined soluble substance content threshold value, thereby realizing the intelligent and automated detection of the filter element life. This data-driven decision-making method is more scientific and accurate than the traditional experience-based or fixed-cycle replacement method.

[0078] Figure 3 A flow chart of a filter element life detection method provided in an embodiment of the present application is provided, wherein the filter element life detection method comprises the following steps.

[0079] S31, detecting the soluble substance content value downstream of the filter element to be tested.

[0080] A first TDS sensor or a first conductivity meter is arranged downstream of the filter element to be tested, the first TDS sensor is used to detect the TDS value downstream of the filter element to be tested, and the first conductivity meter is used to detect the conductivity downstream of the filter element to be tested. The TDS value or conductivity downstream of the filter element to be tested is used as the downstream soluble substance content value of the filter element to be tested.

[0081] S32, detecting the upstream soluble substance content value of the filter element to be tested.

[0082] A second TDS sensor or a second conductivity meter is arranged upstream of the filter element to be tested, the second TDS sensor is used to detect the TDS value upstream of the filter element to be tested, and the second conductivity meter is used to detect the conductivity upstream of the filter element to be tested. The TDS value or conductivity upstream of the filter element to be tested is used as the upstream soluble substance content value of the filter element to be tested.

[0083] S33, obtaining a soluble substance content difference according to the upstream soluble substance content value and the downstream soluble substance content value.

[0084] The soluble substance content difference can be obtained based on the absolute value of the difference between the upstream soluble substance content value and the downstream soluble substance content value. The soluble substance content difference can be the absolute value of the difference in TDS values ​​upstream and downstream of the filter element to be tested, or the absolute value of the difference in conductivity upstream and downstream of the filter element to be tested.

[0085] The difference in dissolved matter content indicates the change in dissolved matter content in water during the treatment process and can be used to evaluate the performance of water treatment equipment.

[0086] S34, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the difference in the content of soluble substances.

[0087] After obtaining the difference in the soluble substance content, it can be determined whether the life of the filter element to be tested has reached a preset replacement standard based on the downstream soluble substance content value.

[0088] The embodiment of the present application directly reflects the ability of the filter element to remove soluble substances in water by comparing the soluble substance content values ​​upstream and downstream of the filter element and calculating the difference in soluble substance content, which is an important basis for judging the life of the filter element. When the difference in soluble substance content reaches or exceeds the preset threshold, it indicates that the filtering performance of the filter element has significantly decreased and needs to be replaced in time. This data-driven replacement strategy can prevent the filter element from failing due to excessive use and ensure water quality safety. By detecting the difference in soluble substance content, the replacement cycle of the filter element can be optimized. It not only avoids the waste of resources caused by premature replacement of the filter element, but also prevents the decline in purification effect due to untimely replacement.

[0089] In an optional embodiment, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the difference in the soluble substance content includes:

[0090] Calculating a ratio between the soluble substance content difference and the upstream soluble substance content value;

[0091] Obtaining a ratio threshold value according to the type of the filter element to be tested;

[0092] It is determined whether the life of the filter element to be tested reaches a preset replacement standard according to the ratio value and the ratio threshold value.

[0093] Divide the difference in dissolved matter content by the upstream dissolved matter content value to obtain the ratio value. The ratio value indicates the percentage of dissolved matter removed by the filter element to the total dissolved matter content in the upstream water. If the filter element to be tested is an RO filter element, the ratio between the difference in dissolved matter content and the upstream dissolved matter content value is called the desalination rate. If the filter element to be tested is a mineralized filter element, the ratio between the difference in dissolved matter content and the upstream dissolved matter content value is called the mineral element precipitation rate.

[0094] Different types of filter elements have different removal capabilities and lifespans for soluble substances in water due to differences in type (RO filter element, mineralized filter element, etc.) and / or material (such as activated carbon, ceramic, polypropylene, etc.), structure (such as granular, fibrous, membrane, etc.), filtration accuracy (such as microfiltration, ultrafiltration, reverse osmosis, etc.). Therefore, it is necessary to set corresponding ratio thresholds for filter elements of different types and / or materials, structures, filtration accuracy, etc. The type, material, structure, filtration accuracy, etc. of the filter element can be obtained from the filter element's manual, label, or information provided by the manufacturer.

[0095] After obtaining the type and / or material, structure, filtration accuracy and other information of the filter element to be tested, a ratio threshold matching the type and / or material, structure, filtration accuracy and other information of the filter element to be tested is queried from a locally stored database table.

[0096] Exemplarily, assuming that the filter element to be tested is an RO filter element, the ratio threshold is a preset first ratio threshold; assuming that the filter element to be tested is a mineralized filter element, the ratio threshold is a preset second ratio threshold.

[0097] The calculated ratio value is compared with the obtained ratio threshold value. If the ratio value is higher than the obtained ratio threshold value, it means that the filter element has a good filtering effect and can effectively remove soluble substances in the water, and it is determined that the life of the filter element to be tested has not reached the preset replacement standard. If the ratio value is lower than the obtained ratio threshold value, it may indicate that the filtering capacity of the filter element has decreased, or the filter element has reached the end of its service life, and it is determined that the life of the filter element to be tested has reached the preset replacement standard.

[0098] In the above optional implementation, by calculating the ratio between the difference in soluble substance content and the upstream soluble substance content value, and comparing it with the ratio threshold corresponding to the type of filter element to be tested, the actual filtering effect of the filter element can be evaluated more accurately; by obtaining the ratio threshold according to the filter element type, it can be ensured that the judgment standard matches the filter element characteristics, thereby improving the accuracy of the judgment.

[0099] The above-mentioned embodiment 2 and the above-mentioned embodiment 3 are two parallel embodiments, and the embodiment 2 and the embodiment 3 describe different methods to realize the detection of the filter element life. In the embodiment 2, the filter element life is judged by directly comparing the downstream soluble substance content value (such as TDS value or conductivity value) with the obtained soluble substance content threshold value, which is a simple and direct method. In the embodiment 3, the concepts of proportional value and proportional threshold value are introduced. The filter element life is judged by calculating the ratio between the soluble substance content difference and the upstream soluble substance content value, and comparing the ratio with the proportional threshold value obtained according to the filter element type. This method is more flexible and accurate, because the embodiment 3 not only considers the differences in filtering performance of different types of filter elements, but also considers the impact of changes in upstream water quality on the filtering effect of the filter element.

[0100] The above embodiment describes the filter element life detection method using a single filter element in a water treatment device as an example. In order to more comprehensively illustrate this process, the filter element life detection method will be described below using two filter elements included in the water treatment device as an example.

[0101] See also Figure 4As shown in the figure, the water treatment equipment includes an RO filter element and a mineral filter element. In the water treatment equipment, the water first passes through the RO filter element. The RO filter element uses reverse osmosis technology to effectively remove dissolved solids, bacteria, viruses and most harmful substances in the water to ensure that the water quality is initially purified. Subsequently, the water treated by the RO filter element will continue to flow through the mineral filter element. The main function of the mineral filter element is to add minerals beneficial to the human body, such as calcium and magnesium, to the water, thereby improving the taste and nutritional value of the water and making the treated water more suitable for human drinking.

[0102] A sensor 1 is arranged upstream of the RO filter element, and the sensor 1 is used to detect the soluble substance content value (such as TDS value or conductivity) upstream of the RO filter element. A sensor 2 is arranged downstream of the RO filter element, and the sensor 2 is used to detect the soluble substance content value downstream of the RO filter element. A sensor 3 is arranged downstream of the mineralized filter element, and the sensor 3 is used to detect the soluble substance content value downstream of the mineralized filter element. Since the downstream of the RO filter element is also the upstream of the mineralized filter element), the soluble substance content value upstream of the mineralized filter element is the same as the soluble substance content value downstream of the RO filter element. That is, the sensor 2 is located between the RO filter element and the mineralized filter element, and the soluble substance content value detected by the sensor 2 is used as both the soluble substance content value downstream of the RO filter element and the soluble substance content value upstream of the mineralized filter element.

[0103] In other embodiments, a sensor 1 may be provided upstream of the RO filter element, and the sensor 1 is used to detect the content value of dissolved substances upstream of the RO filter element. A sensor 2 may be provided downstream of the RO filter element, and the sensor 2 is used to detect the content value of dissolved substances downstream of the RO filter element. Similarly, a sensor 3 may be provided upstream of the mineralized filter element, and the sensor 3 is used to detect the content value of dissolved substances upstream of the mineralized filter element. A sensor 4 may be provided downstream of the mineralized filter element, and the sensor 4 is used to detect the content value of dissolved substances downstream of the mineralized filter element.

[0104] The present application embodiment does not impose any restrictions on the setting of the sensor. Figure 4 The positions given in the figure are used as examples to describe the method of simultaneously detecting the life of multiple filter elements in a water treatment device.

[0105] Figure 5 A flow chart of a filter element life detection method provided in an embodiment of the present application is provided, wherein the filter element life detection method comprises the following steps.

[0106] S50, detect whether an RO filter element or a mineralized filter element is installed.

[0107] After the water treatment equipment is correctly connected to the power supply, press the power switch to power on the water treatment equipment. Then, press the reset button to restore the water treatment equipment to its initial state. Start the water treatment equipment and put it into normal working state.

[0108] The installation state of the RO filter element is detected by a first detection circuit inside the water treatment device. The installation state of the mineralization filter element is detected by a second detection circuit inside the water treatment device.

[0109] If the water treatment device detects that any one of the RO filter element and the mineralization filter element is not installed, step S51 is executed. If the water treatment device detects that the RO filter element and the mineralization filter element are both correctly installed, step S52 is executed.

[0110] S51, issuing a preset user prompt.

[0111] When it is detected that there is no RO filter or mineral filter installed, the water treatment device will issue a warning sound, display an error code or message, and prompt the user to install the filter. At the same time, the water treatment device will stop discharging water to prevent unfiltered water from flowing out directly.

[0112] S52, respectively detecting the content values ​​of soluble substances in the upstream and downstream of the RO filter element, and at the same time, respectively detecting the content values ​​of soluble substances in the upstream and downstream of the mineralization filter element.

[0113] A sensor is installed upstream of the RO filter element (i.e., the water inlet end) to detect the water quality before entering the RO filter element, and is recorded as the upstream soluble substance content value (such as TDS1). A sensor is installed downstream of the RO filter element (i.e., the water outlet end) to detect the water quality after being treated by the RO filter element, and is recorded as the downstream soluble substance content value (such as TDS2).

[0114] The dissolved matter content value can also be detected upstream of the mineralization filter (i.e. downstream of the RO filter) as a reference before mineralization. A sensor is installed downstream of the mineralization filter to detect the water quality after the mineralization filter is treated and recorded as the downstream dissolved matter content value (such as TDS3).

[0115] S53, calculating a first difference value according to the upstream and downstream soluble substance content values ​​of the RO filter element, and calculating a desalination rate according to the first difference value.

[0116] The difference between the upstream and downstream soluble matter content values ​​of the RO filter element is calculated to obtain the soluble matter content difference, that is, the first difference. The first difference reflects the ability of the RO filter element to remove soluble matter.

[0117] The ratio between the difference in the soluble substance content of the RO filter element and the soluble substance content value upstream thereof is calculated as the desalination rate. The desalination rate is the percentage of the soluble substances removed by the RO filter element to the total soluble substances. Optionally, desalination rate = (the soluble substance content value upstream of the RO filter element - the soluble substance content value downstream of the RO filter element) / the soluble substance content value upstream of the RO filter element × 100% = the difference in the soluble substance content of the RO filter element / the soluble substance content value upstream of the RO filter element × 100%.

[0118] S54, when the downstream soluble substance content value of the RO filter element is higher than a first threshold value, or the desalination rate is lower than a desalination rate threshold value, it is determined that the life of the RO filter element has reached a preset replacement standard.

[0119] The first threshold is the soluble substance content threshold corresponding to the RO filter element. The desalination rate threshold is the ratio threshold corresponding to the RO filter element.

[0120] If the soluble substance content value downstream of the RO filter element is higher than the first threshold value, that is, the soluble substance content value downstream of the RO filter element is higher than the soluble substance content threshold value corresponding to the RO filter element, it means that the filtering effect of the RO filter element has decreased and may not be able to effectively remove soluble substances in the water.

[0121] If the desalination rate is lower than the desalination rate threshold, that is, the ratio between the difference in the soluble substance content of the RO filter element and the soluble substance content value of the upstream is lower than the ratio threshold corresponding to the RO filter element, it also indicates that the filtering performance of the RO filter element is insufficient.

[0122] When any of the above conditions is met, it is determined that the life of the RO filter element has reached the preset replacement standard.

[0123] S55, when the downstream soluble substance content value of the RO filter element is lower than the first threshold value and the desalination rate is higher than the desalination rate threshold value, the remaining service life or the water production capacity of the RO filter element is determined according to the desalination rate and a preset first relationship curve.

[0124] When the downstream soluble substance content value of the RO filter element is lower than the first threshold value (the soluble substance content threshold value corresponding to the RO filter element), and the desalination rate is higher than the desalination rate threshold value, it means that the RO filter element is currently in a good working condition and can effectively filter impurities in the water.

[0125] The first relationship curve is preset and describes the relationship between the desalination rate of the RO filter element and its remaining service life or the amount of water that can be produced. According to the position of the current desalination rate on the first relationship curve, the remaining service life (usually expressed in time, such as days, weeks, months, etc.) or the amount of water that can be produced (i.e., how much water the RO filter element can still process before reaching the replacement standard) of the RO filter element can be estimated, and the remaining service life or amount of water that can be produced of the RO filter element can be provided to the user.

[0126] In order to establish a model that can accurately reflect the relationship between the desalination rate of the RO filter element and the remaining service life or the amount of water that can be produced of the RO filter element, a large amount of experimental data can be collected. These data include the desalination rate and the remaining service life or the amount of water that can be produced of water quality samples before and after treatment with different types of RO filter elements. For each type of RO filter element, a function model is established by simulating the relationship between the desalination rate and the remaining service life or the amount of water that can be produced before and after treatment with the RO filter element, and a first relationship curve is obtained.

[0127] S56, calculating a second difference value according to the upstream and downstream soluble substance content values ​​of the mineralized filter element, and calculating a mineral element precipitation rate according to the second difference value.

[0128] The difference between the upstream and downstream dissolved matter content values ​​of the mineralized filter element is calculated to obtain the dissolved matter content difference, i.e., the second difference. The second difference reflects the change of dissolved matter by the mineralized filter element, including the possible increase in mineral content.

[0129] Calculate the ratio between the difference in the soluble substance content of the mineralized filter element and the soluble substance content value upstream of the mineralized filter element as the mineral element precipitation rate. The mineral element precipitation rate is the percentage of the soluble substances (mainly minerals) increased downstream of the mineralized filter element to the total increase. Optionally, mineral element precipitation rate = (the downstream soluble substance content value of the mineralized filter element - the upstream soluble substance content value of the mineralized filter element) / the upstream soluble substance content value of the mineralized filter element × 100% = the difference in the soluble substance content of the mineralized filter element / the upstream soluble substance content value of the mineralized filter element × 100%.

[0130] S57, when the downstream soluble substance content value of the mineralized filter element is higher than the second threshold value, or the mineral element precipitation rate is lower than the mineral element precipitation rate threshold value, it is determined that the life of the mineralized filter element has reached a preset replacement standard.

[0131] The second threshold is the soluble substance content threshold corresponding to the mineralized filter element. The mineral element precipitation rate threshold is the ratio threshold corresponding to the mineralized filter element.

[0132] If the downstream soluble substance content value of the mineralized filter element is higher than the second threshold value, that is, the downstream soluble substance content value of the mineralized filter element is higher than the soluble substance content threshold value corresponding to the mineralized filter element, it means that the mineralization effect of the mineralized filter element has decreased and more minerals may not be effectively precipitated.

[0133] If the mineral element precipitation rate is lower than the mineral element precipitation rate threshold, that is, the ratio between the difference in soluble substance content of the mineralized filter element and the soluble substance content value of the upstream is lower than the ratio threshold corresponding to the mineralized filter element, it also indicates that the mineralization effect of the mineralized filter element is insufficient.

[0134] When any of the above conditions is met, it is determined that the life of the mineralized filter element has reached the preset replacement standard.

[0135] S58, when the soluble substance content value downstream of the mineralized filter element is higher than the second threshold value, and the mineral element precipitation rate is higher than the mineral element precipitation rate threshold value, detecting the water flow velocity upstream of the mineralized filter element.

[0136] When the soluble substance content value downstream of the mineralized filter element is higher than the second threshold value (the soluble substance content threshold value corresponding to the mineralized filter element), and the mineral element precipitation rate is higher than the mineral element precipitation rate threshold value, it means that the mineralized filter element is currently in a good working condition and can effectively increase the mineral content in the water.

[0137] In order to further evaluate the performance and life of the mineralized filter element, the upstream water flow velocity of the mineralized filter element can be tested. Water flow velocity is one of the important factors affecting the mineralization effect. Too fast or too slow water flow may affect the life and performance of the mineralized filter element.

[0138] A water flow velocity sensor or flow meter is arranged upstream of the mineralized filter element, and the water flow velocity sensor or flow meter is used to detect the water flow velocity upstream of the mineralized filter element. The water flow velocity indicates the speed of the water flow before passing through the mineralized filter element, and reflects the flow state of the water before entering the mineralized filter element.

[0139] S59, obtaining a second relationship curve matching the water flow velocity, and determining the remaining service life of the mineralized filter element according to the mineral element precipitation rate and the matching second relationship curve.

[0140] The second relationship curve is pre-set and describes the relationship between the mineral element precipitation rate of the mineralized filter element and its remaining service life or the amount of water that can be produced. According to the position of the current mineral element precipitation rate on the second relationship curve, the remaining service life (usually expressed in time, such as days, weeks, months, etc.) or the amount of water that can be produced (i.e., how much water the mineralized filter element can still process before reaching the replacement standard) of the mineralized filter element can be estimated, and the remaining service life or amount of water that can be produced of the mineralized filter element can be provided to the user.

[0141] In order to establish a model that can accurately reflect the relationship between the mineral element precipitation rate of the mineralized filter element and the remaining service life or water production of the mineralized filter element, a large amount of experimental data can be collected. These data include the mineral element precipitation rate and remaining service life or water production of water quality samples before and after different types of mineralized filter elements are used to treat different water flow rates. For each type of mineralized filter element, a function model is established by simulating the relationship between the mineral element precipitation rate and the remaining service life or water production before and after the mineralized filter element is treated with different water flow rates, and the second relationship curve is obtained.

[0142] The above optional implementation manner considers the water flow velocity of the mineralized filter element and selects a suitable second relationship curve from a plurality of preset second relationship curves according to the water flow velocity, thereby more accurately calculating the remaining service life of the mineralized filter element based on the selected second relationship curve, thereby improving the accuracy of the mineralized filter element life monitoring.

[0143] The filter element life detection method of the present application can be integrated into the control system of the water treatment equipment to realize the automation of the filter element life detection. When the filter element life reaches the preset replacement standard, the system can automatically issue a replacement reminder, or even automatically shut down the water treatment equipment to avoid using an aged filter element, thereby ensuring the safety and purity of drinking water. By realizing the intelligence and automation of the filter element life detection, the filter element life detection method of the present application not only improves the accuracy of filter element replacement, avoids the waste of resources and health risks caused by replacing the filter element too early or too late, but also the method has a simple structure and is easy to implement. It is applicable to water treatment equipment of various types and specifications and has broad promotion value and application prospects.

[0144] In an optional embodiment, the method further comprises:

[0145] The remaining service life is displayed using a preset display method.

[0146] After the remaining service life is monitored, the remaining service life is displayed on the display interface at the end of the water channel, so that people can intuitively understand when the water treatment equipment needs to be replaced.

[0147] The preset display modes may include one or a combination of the following: color coding, chart display, digital display, etc.

[0148] Color coding is based on the range of remaining service life, using different colors for coding. For example, green means sufficient remaining service life, yellow means it is about to reach the replacement standard, and red means it has exceeded the replacement standard. This color coding method can intuitively reflect the water quality status and facilitate users to quickly judge.

[0149] The chart display shows the changing trend of the remaining service life through bar charts, line charts, etc. These charts can clearly show the changes of the remaining service life over time, space and other factors, which helps users find potential problems or patterns.

[0150] Digital display directly displays the remaining service life on the display screen. This method can provide accurate data information, which is convenient for users to conduct quantitative analysis and comparison.

[0151] At the same time, digital display can also be combined with color coding, chart display, color bars or lights to form a more comprehensive information display method.

[0152] In actual applications, the preset display mode can be flexibly adjusted according to user needs, application scenarios and other factors.

[0153] The above optional implementation mode performs a visual display after the remaining service life is monitored, which can improve the user experience and enhance the data readability.

[0154] Figure 6 It is a functional module diagram of the filter element life detection device provided in an embodiment of the present application.

[0155] In some embodiments, the filter element life detection device 60 may include a plurality of functional modules composed of program code segments. The program code of each program segment in the filter element life detection device 60 may be stored in a memory of the water treatment device and executed by at least one processor to execute (see Figure 1 Description) Filter element life detection function.

[0156] In this embodiment, the filter element life detection device 60 can be divided into multiple functional modules according to the functions it performs. The functional modules may include: a detection module 601, a judgment module 602, a determination module 603 and an installation module 604. The module referred to in this application refers to a series of computer-readable instruction segments that can be executed by at least one processor and can complete a fixed function, which is stored in a memory. In this embodiment, the functions of each module will be described in detail in subsequent embodiments.

[0157] The detection module 601 is used to detect the soluble substance content value downstream of the filter element to be tested;

[0158] The judgment module 602 is used to judge whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value.

[0159] In an optional embodiment, the judging module 602 judges whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value, including:

[0160] Obtaining a soluble substance content threshold value according to the type of the filter element to be tested;

[0161] Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the downstream soluble substance content value and the soluble substance content threshold.

[0162] In another optional embodiment, the judging module 602 judges whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value, including:

[0163] Detecting the upstream soluble substance content value of the filter element to be tested;

[0164] Obtaining a soluble substance content difference according to the upstream soluble substance content value and the downstream soluble substance content value;

[0165] Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the difference in the soluble substance content.

[0166] Wherein, judging whether the life of the filter element to be tested reaches a preset replacement standard according to the difference in the content of the soluble substance comprises:

[0167] Calculating a ratio between the soluble substance content difference and the upstream soluble substance content value;

[0168] Obtaining a ratio threshold value according to the type of the filter element to be tested;

[0169] It is determined whether the life of the filter element to be tested reaches a preset replacement standard according to the ratio value and the ratio threshold value.

[0170] The determination module 603 is used to determine the remaining service life or the amount of water that can be produced of the RO filter element according to the proportional value and a preset proportional-life relationship curve when the filter element to be tested is an RO filter element, the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the RO filter element, and the proportional value is higher than the proportional threshold value corresponding to the RO filter element.

[0171] The detection module 602 is also used to detect the upstream water flow velocity of the filter element to be tested when the filter element to be tested is a mineralized filter element and when the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the mineralized filter element and the ratio value is higher than the ratio threshold value corresponding to the mineralized filter element.

[0172] The determination module 603 is further used to obtain a proportional life relationship curve matching the water flow velocity; and determine the remaining service life or the amount of water that can be produced of the mineralized filter element according to the proportional value and the matching proportional life relationship curve.

[0173] The installation module 604 is used to detect whether the filter element to be tested is installed; when it is detected that the filter element to be tested is not installed, a preset user prompt is issued.

[0174] The detection module 601 is also used to detect the soluble substance content value downstream of the filter element to be tested when it is detected that the filter element to be tested is installed.

[0175] It should be understood that the various variations and specific embodiments of the filter element life detection method provided in the above-mentioned embodiments are also applicable to the filter element life detection device in this embodiment. Through the detailed description of the aforementioned filter element life detection method, those skilled in the art can clearly know the implementation process of the filter element life detection device in this embodiment. For the sake of brevity of the specification, it will not be described in detail here.

[0176] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, all or part of the steps of the filter element life detection method are implemented.

[0177] See also Figure 7 , which is a schematic diagram of the structure of the water treatment device provided in the embodiment of the present application. In a preferred embodiment of the present application, the water treatment device 7 includes a memory 701 , at least one processor 702 , and at least one communication bus 703 .

[0178] Those skilled in the art should understand that Figure 7 The structure of the water treatment device shown does not constitute a limitation of the embodiments of the present application. The water treatment device 7 may also include more or less other hardware or software than shown in the figure, or a different arrangement of components.

[0179] In some embodiments, the water treatment device 7 is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application-specific integrated circuits, programmable gate arrays, digital processors, and embedded devices. The water treatment device 7 may also include client devices, which include but are not limited to any electronic product that can interact with a client through a keyboard, mouse, remote control, touchpad, or voice control device, such as a personal computer, tablet computer, smart phone, digital camera, etc.

[0180] It should be noted that the water treatment equipment 7 is only an example, and other existing or future electronic products that are suitable for the present application should also be included in the protection scope of the present application and included here by reference.

[0181] In some embodiments, a computer program is stored in the memory 701, and when the computer program is executed by the at least one processor 702, all or part of the steps in the filter element life detection method as described above are implemented. The memory 701 includes a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc memory, magnetic disk memory, magnetic tape memory, or any other computer-readable medium that can be used to carry or store data. Further, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, and the like.

[0182] In some embodiments, the at least one processor 702 is the control core (CrolUnit) of the water treatment device 7, and uses various interfaces and lines to connect the various components of the entire water treatment device 7, and executes various functions and processes data of the water treatment device 7 by running or executing the program or module stored in the memory 701, and calling the data stored in the memory 701. For example, when the at least one processor 702 executes the computer program stored in the memory, it implements all or part of the steps of the filter element life detection method described in the embodiment of the present application; or implements all or part of the functions of the filter element life detection device. The at least one processor 702 can be composed of an integrated circuit, for example, it can be composed of a single packaged integrated circuit, or it can be composed of multiple integrated circuits with the same function or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips.

[0183] In some embodiments, the at least one communication bus 703 is configured to realize the connection communication between the memory 701 and the at least one processor 702, etc. Although not shown, the water treatment equipment 7 may also include a power supply (such as a battery) for powering each component. Preferably, the power supply may be logically connected to the at least one processor 702 through a power management device, so as to realize the functions of managing charging, discharging, and power consumption management through the power management device. The power supply may also include any components such as one or more DC or AC power supplies, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, etc. The water treatment equipment 7 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0184] The above-mentioned integrated unit implemented in the form of a software function module can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling a water treatment device (which can be a personal computer, water treatment device, or network device, etc.) or a processor to execute part of the method described in each embodiment of the present application.

[0185] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0186] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Claims

1. A filter element life detection method, characterized in that: The filter element life detection method comprises: Detect the dissolved substance content value downstream of the filter element to be tested; It is determined whether the life of the filter element to be tested has reached a preset replacement standard based on the downstream soluble substance content value.

2. The filter element life detection method according to claim 1, characterized in that: The step of judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value includes: Obtaining a soluble substance content threshold value according to the type of the filter element to be tested; Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the downstream soluble substance content value and the soluble substance content threshold.

3. The filter element life detection method according to claim 1, characterized in that: The step of judging whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value includes: Detecting the upstream soluble substance content value of the filter element to be tested; Obtaining a soluble substance content difference according to the upstream soluble substance content value and the downstream soluble substance content value; Whether the life of the filter element to be tested reaches a preset replacement standard is determined based on the difference in the soluble substance content.

4. The filter element life detection method according to claim 3, characterized in that: The step of judging whether the life of the filter element to be tested reaches a preset replacement standard according to the difference in the content of the soluble substance comprises: Calculating a ratio between the soluble substance content difference and the upstream soluble substance content value; Obtaining a ratio threshold value according to the type of the filter element to be tested; It is determined whether the life of the filter element to be tested reaches a preset replacement standard according to the ratio value and the ratio threshold value.

5. The filter element life detection method according to claim 4, characterized in that: The filter element to be tested is an RO filter element, and the filter element life detection method further includes: When the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the RO filter element, and the proportion value is higher than the proportion threshold value corresponding to the RO filter element, the remaining service life or the water production capacity of the RO filter element is determined according to the proportion value and a preset proportion-life relationship curve.

6. The filter element life detection method according to claim 4, characterized in that: The filter element to be tested is a mineralized filter element, and the filter element life detection method further includes: When the downstream soluble substance content value is lower than the soluble substance content threshold value corresponding to the mineralized filter element, and the ratio value is higher than the ratio threshold value corresponding to the mineralized filter element, detecting the upstream water flow velocity of the filter element to be tested; Obtaining a proportional life relationship curve matching the water flow velocity; The remaining service life or the amount of water that can be produced of the mineralized filter element is determined based on the ratio value and the matching ratio-life relationship curve.

7. The filter element life detection method according to claim 1, characterized in that: The filter element life detection method also includes: Detecting whether the filter element to be tested is installed; When it is detected that the filter element to be tested is not installed, a preset user prompt is issued; When it is detected that the filter element to be tested is installed, the detection of the downstream soluble substance content value of the filter element to be tested is performed.

8. A filter element life detection device, characterized in that: The filter element life detection device comprises: A detection module, used to detect the downstream dissolved substance content value of the filter element to be tested; The judgment module is used to judge whether the life of the filter element to be tested reaches a preset replacement standard according to the downstream soluble substance content value.

9. A water treatment device, characterized in that: The water treatment equipment includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the filter element life detection method as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the filter element life detection method as described in any one of claims 1 to 7 are implemented.

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