Control method of water purifier and water purifier adopting method

Abstract

The invention discloses a control method of a water purifier and the water purifier adopting the method. The control method is characterized by comprising the following steps: 1, initializing setting; 2, selecting a user age gear ax; 3, detecting dx and an actual TDS value bx, and calculating the total mineral substance amount cx actually ingested according to ax; 4, judging whether cx is greater than the total mineral substance amount ct of recommended intake or not, if so, lowering the current mineral substance retention rate ex, and circulating the step; if not, executing the step 5; 5, judging whether cx is equal to the total mineral substance amount ct recommended to be ingested or not, and if yes, returning to the step 4 if the mineral substance retention rate ex is kept unchanged; and if not, increasing the mineral retention rate ex, and returning to the step 4. The method has the advantages that by distinguishing different ages and combining water intake detection and TDS detection, the actual intake mineral total amount cx is obtained and compared with the recommended intake mineral total amount ct, the mineral retention rate can be adjusted in real time, and real intake of minerals in water according to needs is achieved.

Description

Technical Field

[0001] The invention relates to a control method for water purification equipment, in particular to a control method for a water purifier and a water purifier using the control method. Background Art

[0002] Minerals are essential trace elements for the human body. They cannot be produced by the body itself and must be taken in from the outside. As water purification products become more and more popular in people's daily lives, the water purification function alone can no longer meet the needs of some users. From the perspective of personal health, more and more users hope that the purified water is both safe and can retain the minerals in the water.

[0003] But in fact, different groups of people have different needs for mineral content in water. For example, children and the elderly need to supplement more minerals, so they hope that drinking water can retain an appropriate amount of minerals; while young people or strong people have good physical fitness and high requirements for the taste of water, so they hope that the ions in the water are as small as possible to ensure a better taste when drinking water.

[0004] At present, there are some water purification equipment on the market that can adjust the ion interception rate of water purification products according to the needs of each user and the different water quality in various places, so as to obtain water purification products with different mineral retention rates. For example, the Chinese invention patent application "A water purification device based on water quality intelligent adjustment direct drinking water equipment" with application number 202111182579.4 discloses a water purification process based on water quality intelligent adjustment direct drinking water equipment, including using intelligent adjustment direct drinking water equipment to treat raw water; the specific treatment process is as follows: Step 1, pretreatment of raw water: raw water enters the pretreatment system to pretreat the raw water; Step 2, reprocessing of raw water. The present invention adopts a hybrid process of reverse osmosis and ultrafiltration, and intelligently adjusts the primary direct drinking water produced by the primary treatment system and the secondary direct drinking water produced by the secondary treatment system to mix them to achieve the user-preset water conductivity, thereby obtaining high-quality direct drinking water that is rich in minerals and has a good taste that is more in line with the needs of the human body.

[0005] However, the water purifier in the above patent can only adjust and produce direct drinking water with pre-set parameters, and can only set one mineral retention rate each time, and cannot realize intelligent adjustment of the mineral retention rate of drinking water according to different user ages or physical conditions on the same water dispenser. Therefore, in view of the above problems existing in the prior art, the existing water purifier products need to be further optimized and improved. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a water purifier control method that can intelligently control the mineral retention rate in water purification products to achieve on-demand intake of minerals in water, in response to the above-mentioned existing technical status. This control method can meet the daily health needs of different groups of people.

[0007] The second technical problem to be solved by the present invention is to provide a water purifier that adopts the above control method to achieve its work in view of the above-mentioned existing technical status.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a control method of a water purifier, characterized in that the control method comprises the following steps:

[0009] Step 1: Start the program and set the initial mineral retention rate e0; according to different age levels ax, preset a corresponding relationship table between different TDS values ​​and the total amount of recommended mineral intake;

[0010] Step 2: Select the user age level ax;

[0011] Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax;

[0012] Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested ct at the current time point. If so, adjust the current mineral retention rate ex downward and repeat step 4; if not, execute the next step 5;

[0013] Step 5: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested ct at the current time point. If so, the current mineral retention rate ex remains unchanged and returns to step 4; if not, the current mineral retention rate ex is increased and returns to step 4.

[0014] Therefore, by adopting the above control method for circulation, when the water purifier is turned on and used, the sampling data is calculated and compared every time at a set fixed time point, and the changes in the mineral retention rate in the user's drinking water can be measured at regular intervals, thereby achieving real-time adjustment of the mineral retention rate to better meet the drinking water health needs of people of different ages.

[0015] Preferably, the water intake dx and the actual TDS value bx at the current time point detected in step three can be compared with the preset recommended data by using a timing detection method, that is, when a set fixed time point is reached, the user's actual cumulative water intake dx and the actual TDS value bx at the fixed time point are detected.

[0016] As a further preference, the fixed time points may be pre-set, such as setting three time points every day, namely 9 am, 12 noon and 9 pm.

[0017] As another preferred embodiment, the water intake dx and the actual TDS value bx at the current time point in step 3 can also be detected by real-time detection, that is, each time water is taken, the actual cumulative water intake dx and the actual TDS value bx of the user at the time of taking water are immediately detected. This real-time detection method uses a linear comparison method. As long as the recommended total mineral intake c0 within the preselected period t0 is set, the recommended total mineral intake ct at any time point can be directly obtained through the linear relationship ct / tx=c0 / t0. Compared with the previous method of setting a fixed time point, this method of taking a linear relationship comparison point is more flexible and convenient in selecting the detection time, and the detection accuracy can also be higher.

[0018] In order to facilitate counting and realize quantitative calculation of detection results, at a selected fixed time point, as an advantage, calculation can be performed based on the accumulated number of water withdrawals, that is, the water withdrawal amount at the current time point dx=d1+d2+d3+…+dn, wherein d1, d2, d3, …, dn are respectively the single water withdrawal amounts of the user from the 1st to the nth time at the current time point, and n is a positive integer; the current actual total amount of mineral intake cx=c1+c2+c3+…+cn, wherein c1, c2, …, cn are respectively the single mineral intake amounts of the user from the 1st to the nth time at the current time point, and n is a positive integer; the mineral intake amount of a single water withdrawal ci=k×di×bx, wherein ci is the single mineral intake amount, di is the single water withdrawal amount, i takes values ​​of 1, 2, …, n, and n is a positive integer; k is an adjustment coefficient; bx is the actual TDS value currently detected corresponding to each water withdrawal amount.

[0019] In order to further improve the accuracy of the calculation results, preferably, k is a value obtained according to the absorption rate of the human body, and the value range of k is: 0<k<1.

[0020] As another preferred embodiment, another control method of a water purifier may be adopted, wherein the control method comprises the following steps:

[0021] Step 1: Start the program and initialize the settings:

[0022] Set the initial mineral retention rate e0;

[0023] According to different age levels ax, a corresponding relationship table between different TDS values ​​and the total amount of minerals recommended for intake is preset;

[0024] Step 2: Select the user age level ax;

[0025] Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax;

[0026] Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested ct at the current time point. If so, adjust the current mineral retention rate ex downward and proceed to the next step 5; if not, proceed to step 8;

[0027] Step 5: Determine whether the entire calculation cycle t0 is completed. If yes, proceed to the next step 6; if no, return to step 4;

[0028] Step 6: Determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested c0 in the entire calculation cycle t0. If so, the next calculation cycle begins, the initial mineral retention rate e0 is adjusted down by one level, and the program ends; if not, proceed to the next step 7;

[0029] Step 7: Determine whether the total amount of minerals cx currently consumed is equal to the total amount of minerals c0 cumulatively recommended to be consumed in the entire calculation cycle t0. If so, the initial mineral retention rate e0 remains unchanged and the program ends; if not, the next calculation cycle begins, the initial mineral retention rate e0 is increased by one level, and the program ends;

[0030] Step 8: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested ct at the current time point. If so, the current mineral retention rate ex remains unchanged and returns to step 5; if not, the current mineral retention rate ex is increased and returns to step 5.

[0031] In order to facilitate the quantification and calculation of the detection results, it is preferred that the water intake at the current time point dx = d1 + d2 + d3 + ... + dn, wherein d1, d2, d3, ..., dn are respectively the single water intake of the user from the 1st to the nth time at the current time point, and n is a positive integer; the current actual total amount of mineral intake cx = c1 + c2 + c3 + ... + cn, wherein c1, c2, ..., cn are respectively the single mineral intake amounts of the user from the 1st to the nth time at the current time point, and n is a positive integer; the mineral intake amount of a single water intake ci = k × di × bx, wherein ci is the single mineral intake amount, di is the single water intake, i takes values ​​of 1, 2, ..., n, and n is a positive integer; k is an adjustment coefficient; bx is the actual TDS value currently detected corresponding to each water intake.

[0032] In order to further improve the calculation accuracy, as a further preferred embodiment, k is a value obtained according to the absorption rate of the human body, and the value range of k is: 0<k<1.

[0033] Preferably, the water intake dx and the actual TDS value bx at the current time point detected in step three can be compared with the preset recommended data by using a timing detection method, that is, when a set fixed time point is reached, the user's actual cumulative water intake dx and the actual TDS value bx at the fixed time point are detected.

[0034] As a further preference, the fixed time points may be pre-set, such as setting three time points every day, namely 9 am, 12 noon and 9 pm.

[0035] As another preferred embodiment, the water intake dx and the actual TDS value bx at the current time point in step 3 can also be detected by real-time detection, that is, each time water is taken, the actual cumulative water intake dx and the actual TDS value bx of the user at the time of taking water are immediately detected. This real-time detection method uses a linear comparison method. As long as the recommended total mineral intake c0 within the preselected period t0 is set, the recommended total mineral intake ct at any time point can be directly obtained through the linear relationship ct / tx=c0 / t0. Compared with the previous method of setting a fixed time point, this method of taking a linear relationship comparison point is more flexible and convenient in selecting the detection time, and the detection accuracy can also be higher.

[0036] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: a water purifier, including a water inlet, a purification device and a water outlet, characterized in that: the water path control of the water purifier from the water inlet through the purification device to the water outlet adopts the control method described in the above claims.

[0037] Preferably, the purification device includes a pre-filter element, a solenoid valve, a booster pump and a composite filter element which are connected in sequence by pipelines, the water inlet is connected to the inlet of the pre-filter element, the water outlet is connected to the outlet of the composite filter element, and the water outlet includes a wastewater outlet provided with a wastewater solenoid valve and a clean water outlet for users.

[0038] In order to facilitate the real-time detection of TDS, preferably, a TDS detection device is further provided between the composite filter element and the booster pump.

[0039] In order to further improve the purification effect of drinking water, as a further preferred embodiment, a post-filter element is provided before the purified water outlet of the composite filter element.

[0040] In order to simplify the water connection and achieve balanced water outlet, preferably, the composite filter element includes at least two inner core components, and the outlets of all inner core components are connected to the clean water outlet after passing through a mixing valve.

[0041] Compared with the prior art, the advantages of the present invention are: in this application, different ages are distinguished, and water intake detection and TDS detection at set time points are combined to obtain the actual total amount of mineral intake cx. According to the comparison with the preset recommended total amount of mineral intake ct, the mineral retention rate can be adjusted in real time to achieve true on-demand intake of minerals in water, thereby meeting the health needs of different groups of people; the solution of the present application is simple and easy to implement, and there is no need to change the structure of the existing equipment. Only a simple TDS sensor and water intake detection sensor need to be added to realize real-time detection of the total amount of mineral intake, allowing users to grasp their drinking water quality status at any time. It is more intelligent and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is one of the flow charts of the water purifier control method according to an embodiment of the present invention.

[0043] Figure 2 This is the second flow chart of the water purifier control method according to an embodiment of the present invention.

[0044] Figure 3 This is a functional structure block diagram of a water purifier product according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings.

[0046] like Figure 3 As shown, the water purifier of this embodiment can adopt various existing purification equipments. The water purifier includes a pre-filter, a solenoid valve, a booster pump, TDS, a composite filter, a mixing valve and a post-filter element connected in sequence through pipelines from the water inlet to the water outlet, wherein the water inlet is connected to the inlet of the pre-filter element, TDS is used to detect the TDS value in the water, the outlet of the composite filter element includes a wastewater outlet provided with a wastewater solenoid valve and a clean water outlet for users, and the composite filter element includes at least two inner core components (inner core component 1 and inner core component 2), and the outlets of all inner core components are output from the clean water outlet after the water is discharged from the mixing valve. In order to further improve the filtering effect, the clean water is purified by the post-filter element and provided to the end customers for drinking. The functional structure of the water purifier belongs to conventional technology and will not be elaborated here.

[0047] In order to meet the needs of different groups of people for the total amount of minerals that need to be ingested through drinking water every day, the above-mentioned water purifier of the present application can adopt the following two control methods to achieve intelligent adjustment of the mineral retention rate in purified water.

[0048] Specifically, Figure 1 As shown, the first control method of the water purifier of the present application includes the following steps:

[0049] Step 1: Start the program and set the initial mineral retention rate e0; according to different age levels ax, preset the corresponding relationship table between different TDS values ​​and the total amount of recommended mineral intake, as shown in Table 1 below;

[0050]

[0051] Table 1

[0052] In this application, the age levels are divided into four levels, namely 0-10 years old, 10-20 years old, 20-30 years old and over 30 years old. The recommended total amount of mineral intake corresponding to each level in Table 1 can be a range of values.

[0053] Step 2: Select the user's age level ax.

[0054] Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax;

[0055] Considering that the user may not only take water once before a fixed time point, but may take water multiple times, in order to improve the calculation accuracy, the calculation can be performed based on the total amount of water taken before the selected fixed time point. Specifically, the calculation of the actual total amount of mineral intake cx is achieved through the following steps ①-③:

[0056] ① Set the water intake at the current time point to dx = d1 + d2 + d3 + ... + dn, where d1, d2, d3, ..., dn are the single water intakes of the user from the first to the nth time at the current time point, and n is a positive integer;

[0057] ② The amount of minerals ingested in a single water intake is ci = k × di × bx, where ci is the amount of minerals ingested in a single time, di is the amount of water taken in a single time, i is 1, 2, ..., n, and n is a positive integer; bx is the actual TDS value currently detected corresponding to each water intake; k is the adjustment coefficient. In order to further improve the accuracy of the calculation result, k is the value obtained according to the human body absorption rate, and the value range of k is: 0 < k < 1;

[0058] ③ The total amount of minerals actually ingested at present is cx=c1+c2+c3+…+cn, where c1, c2, …, cn are the single mineral intake amounts of the user from the 1st to the nth time, respectively, and n is a positive integer.

[0059] Therefore, by adopting the above control method for circulation, when the water purifier is turned on and used, data sampling, calculation and comparison are performed every time at a set fixed time point, so as to regularly detect and discover the changes in the mineral retention rate in the user's drinking water, thereby realizing real-time adjustment of the mineral retention rate according to the drinking water health needs of people of different ages.

[0060] The timed detection method is used to compare the calculated data with the preset recommended data, that is, the total amount of minerals recommended in Table 1 is refined and divided into the total amount of minerals corresponding to several fixed time points set in advance, such as setting three time points every day, namely 9 am (t10), 12 noon (t20) and 9 pm (t30), see Table 2 below;

[0061]

[0062] Table 2

[0063] Therefore, at the three fixed time points mentioned above every day, the actual cumulative water intake dx and the actual TDS value bx are tested, and then the calculated results are compared with the total amount of minerals recommended for intake in Table 2.

[0064] Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals ct recommended for ingestion at the corresponding current time point in Table 2. If so, adjust the current mineral retention rate ex downward and return to step 4; if not, proceed to step 5;

[0065] Step 5: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested ct at the current time point. If so, the current mineral retention rate ex remains unchanged and returns to step 4; if not, the current mineral retention rate ex is increased and returns to step 4.

[0066] A real-time detection method can also be used to compare the calculated data with the preset recommended data, that is, when taking water at any time point, the user's actual water intake dx and the actual TDS value bx at that time point are detected, and the amount of mineral intake at that time point is calculated as ci=k×di×bx, wherein ci is the single mineral intake amount, di is the single water intake amount, and bx is the currently detected actual TDS value corresponding to the current water intake amount; k is the adjustment coefficient, which is a value obtained based on the human body's absorption rate, and the value range of k is: 0<k<1.

[0067] The preset recommended data for the current time point can be obtained by linear comparison. As long as the recommended total mineral intake c0 within the pre-selected calculation period t0 (such as one week, one day, or several hours, etc.) is set, the recommended total mineral intake ct at any time point tx can be directly obtained through the linear relationship ct / tx=c0 / t0. As long as the user takes water at any time, the recommended total mineral intake ct at that time can be obtained, thereby realizing the comparison between the actual calculation result at that time and the recommended total mineral intake ct at that time.

[0068] Compared with the comparison method of setting several fixed time points, the linear comparison method can further subdivide the total mineral content data corresponding to different age groups in Table 1 within the preset calculation period t0, and can obtain more linear and continuous comparison points. The sampling points are more random, and the comparable data are more diverse and comprehensive, making the final adjustment effect more accurate.

[0069] like Figure 2 As shown, this is the second control method of the water purifier of the present application. The second method is an improvement on the first control method, and specifically includes the following steps:

[0070] Step 1: Start the program and initialize the settings:

[0071] Set the initial mineral retention rate e0;

[0072] According to different age levels ax, a corresponding relationship table between different TDS values ​​and the recommended total amount of mineral intake is preset. Among them, the recommended mineral intake corresponding to different age groups under different TDS can be found in Table 1. These data are preset in the host through the program.

[0073] Step 2: Select the user age level ax. This step can be manually input by the user.

[0074] Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax;

[0075] The calculation of the total amount of minerals actually ingested cx is still implemented by referring to steps ①-③ in the first control method. The comparison between the calculation result and the recommended data can adopt the timed detection comparison method mentioned in the first control method, or the real-time detection comparison method.

[0076] Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested ct at the current time point. If so, adjust the current mineral retention rate ex downward and proceed to the next step 5; if not, proceed to step 8;

[0077] Step 5: Determine whether the entire calculation cycle t0 is completed. If yes, proceed to the next step 6; if no, return to step 4;

[0078] Step 6: Determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested c0 in the entire calculation cycle t0. If so, the next calculation cycle begins, the initial mineral retention rate e0 is adjusted down by one level, and the program ends; if not, proceed to the next step 7;

[0079] Step 7: Determine whether the total amount of minerals cx currently consumed is equal to the total amount of minerals c0 cumulatively recommended to be consumed in the entire calculation cycle t0. If so, the initial mineral retention rate e0 remains unchanged and the program ends; if not, the next calculation cycle begins, the initial mineral retention rate e0 is increased by one level, and the program ends;

[0080] Step 8: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested ct at the current time point. If so, the current mineral retention rate ex remains unchanged and returns to step 5; if not, the current mineral retention rate ex is increased and returns to step 5.

[0081] In the second control method, a calculation cycle judgment is added. The actual total mineral amount cx is compared with the recommended total mineral intake c0 within the set calculation cycle. Through the comparison result, the gear of the initial mineral retention rate e0 before the start of the next new calculation cycle is adjusted (that is, according to the user's mineral intake in the previous cycle, the mineral retention rate e0 is appropriately adjusted to the most appropriate gear to better match the user's personal drinking water situation). This can effectively avoid excessive fluctuations in the mineral retention rate ex during use in real-time adjustment, thereby ensuring the stability and reliability of equipment operation.

[0082] In this application, different ages are distinguished, and water intake and TDS tests at set time points are combined to obtain the actual total amount of mineral intake cx. Based on the comparison with the preset recommended total amount of mineral intake ct, the mineral retention rate can be adjusted in real time to achieve true on-demand intake of minerals in water, thereby meeting the health needs of different groups of people.

Claims

1. A method for controlling a water purifier, characterized in that: The control method comprises the following steps: Step 1: Start the program and set the initial mineral retention rate e0; according to different age levels ax, preset a corresponding relationship table between different TDS values ​​and the total amount of recommended mineral intake; Step 2: Select the user age level ax; Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax; Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested ct at the current time point. If so, adjust the current mineral retention rate ex downward and return to step 4; if not, proceed to step 5; Step 5: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested ct at the current time point. If so, the current mineral retention rate ex remains unchanged and returns to step 4; if not, the current mineral retention rate ex is increased and returns to step 4.

2. The control method of the water purifier according to claim 1, characterized in that: The water intake at the current time point dx=d1+d2+d3+…+dn, wherein d1, d2, d3, …, dn are the single water intakes of the user from the 1st to the nth time, and n is a positive integer; The total amount of minerals actually ingested at present cx=c1+c2+c3+…+cn, wherein c1, c2, …, cn are the single mineral intake amounts of the user from the 1st to the nth time at the current time point, and n is a positive integer; The amount of mineral intake in a single water intake is ci=k×di×bx, where ci is the amount of mineral intake in a single time, di is the amount of water taken in a single time, i is 1, 2, ..., n, and n is a positive integer; k is the adjustment coefficient; bx is the actual TDS value currently detected corresponding to each water intake.

3. The control method of the water purifier according to claim 2, characterized in that: The k is a value obtained according to the absorption rate of the human body, and the value range of k is: 0<k<1.

4. The control method of the water purifier according to claim 1, characterized in that: In step 3, the water intake dx and the actual TDS value bx at the current time point are detected by a timing detection method, that is, when a set fixed time point is reached, the actual cumulative water intake dx and the actual TDS value bx of the user at the fixed time point are detected.

5. The control method of the water purifier according to claim 4, characterized in that: The fixed time points are three time points set every day, namely 9 am, 12 noon and 9 pm.

6. The control method of the water purifier according to claim 1, characterized in that: In step 3, the water intake dx and the actual TDS value bx at the current time point are detected by a real-time detection method, that is, each time water is taken, the actual cumulative water intake dx and the actual TDS value bx of the user at the time of water taking are immediately detected.

7. A method for controlling a water purifier, characterized in that: The control method comprises the following steps: Step 1: Start the program and initialize the settings: Set the initial mineral retention rate e0; According to different age levels ax, a corresponding relationship table between different TDS values ​​and the total amount of minerals recommended for intake is preset; Step 2: Select the user age level ax; Step 3: Detect the water intake dx at the current time point and the actual TDS value bx detected currently, and calculate the total amount of minerals actually ingested cx according to the selected user age level ax; Step 4: determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested ct at the current time point. If so, adjust the current mineral retention rate ex downward and proceed to the next step 5; if not, proceed to step 8; Step 5: Determine whether the entire calculation cycle t0 is completed. If yes, proceed to the next step 6; if no, return to step 4; Step 6: Determine whether the total amount of minerals actually ingested cx is greater than the total amount of minerals recommended to be ingested c0 in the entire calculation cycle t0. If so, the next calculation cycle begins, the initial mineral retention rate e0 is adjusted down by one level, and the program ends; if not, proceed to the next step 7; Step 7: Determine whether the total amount of minerals cx currently consumed is equal to the total amount of minerals c0 cumulatively recommended to be consumed in the entire calculation cycle t0. If so, the initial mineral retention rate e0 remains unchanged and the program ends; if not, the next calculation cycle begins, the initial mineral retention rate e0 is increased by one level, and the program ends; Step 8: Determine whether the total amount of minerals actually ingested cx is equal to the total amount of minerals recommended to be ingested at the current time point ct. If so, the current mineral retention rate ex remains unchanged and returns to step 5; if not, the current mineral retention rate ex is increased and returns to step 5.

8. The control method of the water purifier according to claim 7, characterized in that: The water intake at the current time point is dx=d1+d2+d3+…+dn, where d1, d2, d3, …, dn are the single water intakes of the user from the 1st to the nth time at the current time point, and n is a positive integer; The total amount of minerals actually ingested at present cx=c1+c2+c3+…+cn, wherein c1, c2, …, cn are the single mineral intake amounts of the user from the 1st to the nth time at the current time point, and n is a positive integer; The amount of mineral intake in a single water intake is ci=k×di×bx, where ci is the amount of mineral intake in a single time, di is the amount of water taken in a single time, i is 1, 2, ..., n, and n is a positive integer; k is the adjustment coefficient; bx is the actual TDS value currently detected corresponding to each water intake.

9. The control method of the water purifier according to claim 8, characterized in that: The k is a value obtained according to the absorption rate of the human body, and the value range of k is: 0<k<1.

10. The control method of the water purifier according to claim 7, characterized in that: In step 3, the water intake dx and the actual TDS value bx at the current time point are detected by a timing detection method, that is, when a set fixed time point is reached, the actual cumulative water intake dx and the actual TDS value bx of the user at the fixed time point are detected.

11. The control method of the water purifier according to claim 10, characterized in that: The fixed time points are three time points set every day, namely 9 am, 12 noon and 9 pm.

12. The control method of the water purifier according to claim 7, characterized in that: In step 3, the water intake dx and the actual TDS value bx at the current time point are detected by a real-time detection method, that is, each time water is taken, the actual cumulative water intake dx and the actual TDS value bx of the user at the time of water taking are immediately detected.

13. A water purifier, comprising a water inlet, a purification device and a water outlet, characterized in that: The water path control of the water purifier from the water inlet through the purification device to the water outlet adopts the control method described in any one of claims 1 to 12.

14. The water purifier according to claim 13, characterized in that: The purification device includes a pre-filter element, a solenoid valve, a booster pump and a composite filter element which are connected in sequence by pipelines. The water inlet is connected to the inlet of the pre-filter element, the water outlet is connected to the outlet of the composite filter element, and the water outlet includes a wastewater outlet provided with a wastewater solenoid valve and a clean water outlet for users.

15. The water purifier according to claim 14, characterized in that: A TDS detection device is also arranged between the composite filter element and the booster pump.

16. The water purifier according to claim 14, characterized in that: A post-filter element is also arranged before the purified water outlet of the composite filter element.

17. The water purifier according to claim 14, characterized in that: The composite filter element comprises at least two inner core components, and the outlets of all the inner core components are connected to the clean water outlet after the water is discharged through a mixing valve.

Images