Water hardness adjusting method for water softener and water softener

Abstract

The application discloses a water hardness adjusting method of a water softener and the water softener. The water hardness adjusting method of the water softener comprises the following steps: obtaining raw water hardness H2 of raw water entering a main machine of the water softener; calculating soft water hardness H1 of softened water produced by the main machine of the water softener by using a software algorithm according to current soft water quantity and regenerated soft water quantity in the main machine of the water softener, wherein the soft water hardness H1=A-B*(current soft water quantity / regenerated soft water quantity); obtaining soft water flow Q1 of the softened water flowing out of the main machine of the water softener; calculating Q2 according to H 目标 *(Q1+Q2)=H1*Q1+H2*Q2, wherein H 目标 is target water hardness; and adjusting an electric adjusting valve of the water softener so that raw water flow of the raw water mixed with the softened water is Q2. The water hardness adjusting method of the water softener makes the mixed water hardness of the softened water and the raw water obtained by a user end closer to the expected hardness of the user, and is beneficial to improving the use experience of the user.

Description

Technical Field

[0001] This invention relates to the field of water softener technology, and in particular to a method for adjusting the hardness of water output from a water softener and a water softener. Background Technology

[0002] Hard water refers to water containing a high amount of soluble calcium and magnesium compounds, while soft water refers to water containing little or no soluble calcium and magnesium compounds. A water softener is a machine that softens raw water to create soft water. Bathing with softened water can help relieve dry skin and excessive dandruff, leaving the skin smooth. However, current water softeners remove a significant amount of soluble calcium and magnesium compounds, resulting in water that is "too soft." Many users, especially first-time users, find the water too slippery, which may not meet their needs.

[0003] During a regeneration cycle of a water softener, the hardness of the generated soft water is not a fixed value, but rather a fluctuating value that varies with the regeneration capacity. If users want to obtain soft water with a target hardness, they need to monitor the hardness of the soft water generated by the water softener in real time. However, existing hardness testing methods have limitations. One method uses test strips, but these cannot be integrated into the water softener for real-time hardness monitoring. Another method uses online hardness monitoring devices, but these are bulky and expensive, making them unsuitable for integration into water softeners. Summary of the Invention

[0004] The purpose of this invention is to provide a method for adjusting the hardness of water from a water softener and a water softener in general. The hardness of the water output from the user end of the water softener is adjustable, resulting in a better user experience.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A method for adjusting the hardness of water output from a water softener, used in a water softener, the method comprising:

[0007] Obtain the raw water hardness H2 of the raw water entering the water softener main unit;

[0008] Obtain the values ​​of A and B of the water softener main unit under the raw water hardness H2;

[0009] Based on the current soft water volume and the regenerated soft water volume in the main unit of the water softener, the soft water hardness H1 of the softened water produced by the main unit of the water softener is calculated using a software algorithm, wherein the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume).

[0010] Obtain the softened water flow rate Q1 of the softened water flowing out of the main unit of the water softener;

[0011] According to H 目标 Calculate Q2 using the formula ×(Q1+Q2)=H1×Q1+H2×Q2, where H 目标 Target water hardness;

[0012] Adjust the electric regulating valve of the water softener so that the raw water flow rate of the raw water mixed with the softened water is Q2.

[0013] Preferably, obtaining the values ​​of A and B corresponding to the raw water hardness H2 of the water softener main unit specifically involves: retrieving the values ​​of A and B from the constant database;

[0014] The method for establishing the constant database includes the following steps:

[0015] Select raw water with different hardness and pass it into the main unit of the water softener to conduct multiple water flow tests on the water softener;

[0016] In each water flow experiment, two sets of data H1, current soft water volume and regenerated soft water volume are collected, and the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume) are respectively substituted into the equation to obtain two equations. A and B are calculated by solving the two equations simultaneously. H1 is obtained by measuring the softened water discharged to the main unit of the water softener.

[0017] Establish a database of constants for different raw water hardness and their corresponding A and B values.

[0018] Preferably, the water hardness adjustment method of the water softener further includes:

[0019] To obtain the specific value of the regenerated soft water volume, the regenerated soft water volume = C × D / H2 / 1000 × 1.0278;

[0020] Where D is the amount of resin;

[0021] C = Experimental regenerated soft water volume / 1.0278 × 1000 × 350 / D, where the experimental regenerated soft water volume is the amount of soft water generated during one regeneration cycle of the water softener when the water softener is tested as a whole with a raw water hardness of 350.

[0022] Preferably, the resin amount D is in the range of 10L≤D≤20L; and / or, the C is in the range of 20000≤C≤50000.

[0023] Preferably, obtaining the raw water hardness H2 of the raw water entering the water softener unit specifically includes:

[0024] Select hardness testing paper;

[0025] The hardness test paper is immersed in a container filled with raw water and soaked for a first target time T1.

[0026] Remove the hardness test paper and shake off any remaining water on it.

[0027] The hardness test paper is allowed to react with the second target in air for a time T2.

[0028] The hardness test paper that changes color is compared with the color card to obtain the original water hardness H2.

[0029] Preferably, obtaining the raw water hardness H2 of the raw water entering the water softener unit specifically includes:

[0030] Establish a database of tap water hardness in different regions;

[0031] Locate the water softener and obtain its location information;

[0032] The hardness of tap water at the location of the water softener is retrieved from the hardness database and used as the raw water hardness H2.

[0033] Preferably, the water hardness adjustment method of the water softener further includes:

[0034] To obtain the current soft water volume, the current soft water volume = regenerated soft water volume - used soft water volume;

[0035] The amount of soft water used is cumulatively measured by a first flow meter located downstream of the soft water outlet of the main unit of the water softener.

[0036] Preferably, the softened water flow rate Q1 of the softened water flowing out of the water softener main unit is specifically as follows:

[0037] The soft water flow rate Q1 is measured using a first flow meter located downstream of the soft water outlet of the main unit of the water softener.

[0038] Preferably, the electric regulating valve of the water softener is adjusted so that the flow rate of the raw water mixed with the softened water is Q2, specifically:

[0039] Operate the electric regulating valve located at the connection between the raw water inlet pipe and the connecting water pipe on the water softener to change the ratio of raw water flowing to the main unit of the water softener to raw water flowing to the connecting water pipe;

[0040] A second flow meter installed on the connecting water pipe displays the flow rate through the connecting water pipe to the soft water outlet pipe in real time;

[0041] Determine whether the flow rate data displayed by the second flow meter is equal to the calculated raw water flow rate Q2. If so, stop operating the electric regulating valve.

[0042] A water softener, using the aforementioned method for adjusting the hardness of the water output, comprises: a main unit; a piping assembly including a raw water inlet pipe, a softened water outlet pipe, a connecting pipe, and an electric regulating valve, wherein the raw water inlet pipe is connected to the raw water inlet of the main unit, the softened water outlet pipe is connected to the softened water outlet of the main unit, one end of the connecting pipe is connected to the raw water inlet pipe, and the other end is connected to the softened water outlet pipe, and the electric regulating valve is located at the junction of the raw water inlet pipe and the connecting pipe; and a flow component including a first flow meter and a second flow meter, wherein the first flow meter is located on the softened water outlet pipe and near the softened water outlet, and the second flow meter is located on the connecting pipe.

[0043] The beneficial effects of this invention are:

[0044] The water hardness adjustment method for a water softener provided by this invention includes: obtaining the raw water hardness H2 of the raw water entering the water softener main unit; calculating the soft water hardness H1 of the softened water produced by the water softener main unit using a software algorithm based on the current soft water volume and the regenerated soft water volume in the water softener main unit, wherein the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume); obtaining the soft water flow rate Q1 of the softened water flowing out of the water softener main unit; and adjusting the hardness H1 of the softened water produced by the water softener main unit based on the current soft water volume and the regenerated soft water volume in the water softener main unit. 目标 Calculate Q2 using the formula ×(Q1+Q2)=H1×Q1+H2×Q2, where H 目标 To achieve the target output water hardness, the electric regulating valve of the water softener is adjusted so that the raw water flow rate mixed with softened water is Q2. This water softener output hardness adjustment method can calculate the real-time hardness of the softened water generated in the water softener unit based on a software algorithm. This real-time hardness is related to the regeneration capacity of the water softener unit. Compared to using a fixed softened water hardness value as the basis for mixing softened water and raw water, using the real-time hardness value of softened water as the basis for mixing softened water and raw water results in the final mixed water hardness obtained by the user being closer to the user's desired hardness, which is beneficial to improving the user experience. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the water softener provided by the present invention;

[0046] Figure 2 This is a flowchart of the water hardness adjustment method for a water softener provided by the present invention.

[0047] In the picture:

[0048] 100. Water softener main unit; 200. Piping assembly; 210. Raw water inlet pipe; 211. First raw water pipe; 212. Second raw water pipe; 220. Soft water outlet pipe; 221. First soft water pipe; 222. Second soft water pipe; 230. Connecting water pipe; 240. Electric regulating valve; 300. Flow assembly; 310. First flow meter; 320. Second flow meter. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0050] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0053] This invention discloses a water softener, such as Figure 1As shown, the water softener includes a main unit 100, a piping assembly 200, and a flow meter 300. The main unit 100 is a device used to soften raw water into softened water; its internal structure is existing technology and will not be described in detail here.

[0054] The piping assembly 200 is used to input raw water into the water softener main unit 100 and output softened water into the water softener main unit 100. Specifically, the piping assembly 200 includes a raw water inlet pipe 210, a softened water outlet pipe 220, a connecting water pipe 230, and an electric regulating valve 240. One end of the raw water inlet pipe 210 is connected to the raw water source, which can be a tap water source, and the other end of the raw water inlet pipe 210 is connected to the raw water inlet of the water softener main unit 100. One end of the softened water outlet pipe 220 is connected to the user end, through which the user can connect to water, and the other end of the softened water outlet pipe 220 is connected to the softened water outlet of the water softener main unit 100. One end of the connecting water pipe 230 is connected to the raw water inlet pipe 210, and the other end of the connecting water pipe 230 is connected to the softened water outlet pipe 220. An electric regulating valve 240 is located at the connection between the raw water inlet pipe 210 and the connecting water pipe 230. By operating the electric regulating valve 240, the proportion of raw water entering the water softener 100 and the connecting water pipe 230 can be changed. This proportion is between 0% and 100%. That is, the raw water entering the raw water inlet pipe 210 from the raw water source is diverted to the water softener 100 and the connecting water pipe 230 through the electric regulating valve 240. The ratio of the raw water volume entering the water softener 100 to the total raw water volume is between 0% and 100%, and the ratio of the raw water volume entering the connecting water pipe 230 to the total raw water volume is also between 0% and 100%. The sum of the two is the total amount of raw water entering the raw water inlet pipe 210 from the raw water source.

[0055] The flow component 300 includes a first flow meter 310 and a second flow meter 320. The first flow meter 310 is installed on the soft water outlet pipe 220 and near the soft water outlet, while the second flow meter 320 is installed on the connecting water pipe 230. The first flow meter 310 displays not only the real-time flow rate of softened water flowing from the soft water outlet of the water softener unit 100, but also the cumulative flow rate of softened water flowing from the soft water outlet. The second flow meter 320 displays not only the real-time flow rate entering the connecting water pipe 230, but also the cumulative flow rate of raw water that passes through the connecting water pipe 230 and finally enters the soft water outlet pipe 220 to mix with the softened water.

[0056] Optionally, the raw water inlet pipe 210 includes a first raw water pipe 211 and a second raw water pipe 212, and the first raw water pipe 211 and the second raw water pipe 212 are connected to one end of the connecting water pipe 230 through a first tee connector.

[0057] Optionally, the soft water outlet pipe 220 includes a first soft water pipe 221 and a second soft water pipe 222, and the first soft water pipe 221 and the second soft water pipe 222 are connected to the other end of the connecting water pipe 230 through a second tee connector.

[0058] In this embodiment, the water softener also includes a control mechanism. The control mechanism is communicatively connected to the first flow meter 310, the second flow meter 320, and the electric regulating valve 240. The control mechanism can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the electric regulating valve 240 to automatically perform its function.

[0059] Based on the aforementioned water softener, this invention also discloses a method for adjusting the hardness of the water output from a water softener. This method is used in water softeners, such as... Figure 2 As shown, the method for adjusting the hardness of the water output from this water softener includes:

[0060] Obtain the raw water hardness H2 of the raw water entering the water softener main unit 100;

[0061] Obtain the values ​​of A and B for the water softener unit 100 under the raw water hardness H2;

[0062] Based on the current soft water volume and the regenerated soft water volume in the water softener main unit 100, the soft water hardness H1 of the softened water produced by the water softener main unit 100 is calculated using a software algorithm, where the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume).

[0063] Obtain the softened water flow rate Q1 of the softened water flowing out of the water softener unit 100;

[0064] According to H 目标 Calculate Q2 using the formula ×(Q1+Q2)=H1×Q1+H2×Q2, where H 目标 Target water hardness;

[0065] Adjust the electric regulating valve 240 of the water softener so that the raw water flow rate of the raw water mixed with the softened water is Q2.

[0066] Compared to existing water softeners that cannot obtain the real-time hardness of the softened water produced by the main unit and can only use a fixed value, resulting in an inability to accurately control the final output water hardness, the water softener hardness adjustment method provided by this invention can calculate the real-time hardness of the softened water generated within the main unit 100 of the water softener based on a software algorithm. This real-time hardness is related to the regeneration capacity of the main unit. Instead of using a fixed softened water hardness value as the basis for mixing softened water and raw water, using the real-time hardness value of the softened water as the basis for mixing softened water and raw water, and using this real-time hardness to control the mixing ratio of raw water and softened water, makes the hardness of the final mixed water obtained by the user closer to the user's desired hardness, which is beneficial to improving the user experience.

[0067] In some embodiments, obtaining the values ​​of A and B corresponding to the raw water hardness H2 for the water softener host 100 specifically involves retrieving the values ​​of A and B from a constant database.

[0068] The process of creating a constant database includes the following steps:

[0069] Select raw water with different hardness and pass it into the main unit 100 of the water softener to conduct multiple water flow tests on the water softener.

[0070] In each water flow experiment, two sets of data H1, current soft water volume and regenerated soft water volume were collected, and the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume) were respectively substituted into the equation to obtain two equations. The two equations were combined to calculate A and B. H1 was obtained by measuring the softened water discharged to the main unit 100 of the water softener.

[0071] Establish a database of constants for different raw water hardness and their corresponding A and B values.

[0072] In some embodiments, the method for adjusting the hardness of the water output from a water softener further includes: obtaining a specific value for the amount of regenerated soft water, wherein the amount of regenerated soft water = C × D / H2 / 1000 × 1.0278; where D is the amount of resin; C = experimental regenerated soft water / 1.0278 × 1000 × 350 / D, and the experimental regenerated soft water is the amount of soft water generated in one regeneration cycle of the water softener when the water softener is tested as a whole with a raw water hardness of 350; the parameters 1000 and 1.0278 in the above formula are commonly accepted parameters in the water softener industry.

[0073] In one specific embodiment, the resin volume D contained in the water softener unit 100 is 13L, and the raw water hardness is tested according to the standard 350. Through actual water flow experiments, the water softener in this embodiment can produce 1m³ of soft water. 2Therefore, we can calculate: C = 1 / 1.0278 × 1000 × 350 / 13 = 27671.5 ≈ 27672. In this embodiment, the formula for calculating the amount of regenerated soft water from the water softener is: Regenerated soft water volume = 27672 × 13 / H2 / 1000 × 1.0278. Based on this formula, we can calculate the amount of regenerated soft water that this model can produce under different raw water hardness conditions.

[0074] Therefore, we can deduce that: water hardness H1 = AB × {current soft water volume / (27672 × 13 / H2 / 1000 × 1.0278)}.

[0075] Furthermore, assuming the raw water hardness H2 is 350, then 27672 × 13 / 350 / 1000 × 1.0278 = 1.056 ≈ 1. If the current soft water volume measured in the experiment is 1 m³, then... 2 At that time, the actual measured water hardness was 10; the current soft water volume was 0 m³. 2 At that time, the actual measured water hardness was 30. Substituting these two sets of data into the above formula, we can calculate A = 30 and B = 20.

[0076] Therefore, in this embodiment, the final algorithm formula is: Water hardness H1 = 30 - 20 × {Current soft water volume / (27672 × 13 / H2 / 1000 × 1.0278)}. According to the above formula, as long as the raw water hardness H2 and the current soft water volume are obtained, the current water hardness value can be calculated.

[0077] Optionally, the resin quantity D can be in the range of 10L ≤ D ≤ 20L. For example, the resin quantity D can be set to 10L, 11L, 12L, 13L, 140L, 15L, 16L, 17L, 18L, 19L, or 20L. It should be noted that the resin quantity D can be increased by increasing the storage space for the resin. Of course, the resin quantity D can be any other value within the range of 10L ≤ D ≤ 20L. In some other embodiments, the resin quantity D can also be greater than 20L, for example, it can be set to 30L, 40L, or 50L, depending on the requirements.

[0078] Optionally, the value range of C is: 20000 ≤ C ≤ 50000. For example, C can be 20000, 25000, 30000, 35000, 40000, 45000, or 50000. For water softeners of the same type and specifications, C is a fixed value; for different types or specifications of water softeners, C may be the same or different, and can be measured by performing a whole-machine test on the water softener.

[0079] To obtain the hardness of the raw water entering the water softener unit 100, in some embodiments, a test strip method is used to test the hardness of the raw water. Specifically, obtaining the raw water hardness H2 entering the water softener unit 100 includes:

[0080] Select hardness testing paper;

[0081] Immerse the hardness test paper in a container filled with raw water and continue immersing it for the first target time T1. Specifically, first, fill a container with a certain amount of raw water, then immerse the hardness test paper completely in the container and maintain the immersion state until the immersion time reaches the first target time T1. The first target time T1 depends on the selected hardness test paper. For some hardness test papers, the first target time T1 can be 2 seconds.

[0082] Remove the hardness test strip and shake off any remaining water.

[0083] Allow the hardness test strip to react in the air for a second target duration T2; in one embodiment, the second target duration T2 can be 15s; of course, in other embodiments, the second target duration T2 is set to a different duration depending on the hardness test strip selected.

[0084] The hardness test paper that changes color is compared with the color card to obtain the hardness H2 of the raw water.

[0085] It should be noted that besides the test strip method, other methods can be used to determine the raw water hardness H2, such as the soap reagent method, the compound indicator method, and the conductivity method. Furthermore, this method for testing raw water hardness H2 is also applicable to obtaining the soft water hardness H1 value in water flow experiments.

[0086] Since the raw water sources within the same city are generally the same, the raw water hardness H2 is generally the same for water softeners located in the same city. Therefore, a raw water hardness database of H2 values ​​for raw water from different cities can be established. Thus, the raw water hardness H2 of the water entering the water softener unit 100 can also be obtained by calling the raw water hardness data from this database.

[0087] Specifically, obtaining the raw water hardness H2 of the raw water entering the water softener main unit 100 includes:

[0088] Establish a database of tap water hardness in different regions;

[0089] Locate the water softener and obtain its location information;

[0090] The hardness of tap water in the geographical location of the water softener is retrieved from the hardness database and used as the raw water hardness H2.

[0091] In some embodiments, the method for adjusting the hardness of the water outlet of the water softener further includes: obtaining the specific value of the current soft water volume, wherein the current soft water volume = the regenerated soft water volume - the used soft water volume; wherein the used soft water volume is cumulatively measured by a first flow meter 310 located downstream of the soft water outlet of the water softener main unit 100.

[0092] In some embodiments, obtaining the soft water flow rate Q1 of the softened water flowing out of the water softener host 100 specifically involves measuring the soft water flow rate Q1 using a first flow meter 310 located downstream of the soft water outlet of the water softener host 100.

[0093] Optionally, the first flow meter 310 is an ultrasonic flow meter, an electromagnetic flow meter, or a vortex flow meter, all of which have the function of displaying instantaneous flow and cumulative flow.

[0094] In some embodiments, adjusting the electric regulating valve 240 of the water softener to make the raw water flow rate of the raw water mixed with the softened water Q2 specifically means:

[0095] Operate the electric regulating valve 240 located at the connection between the raw water inlet pipe 210 and the connecting water pipe 230 on the water softener to change the ratio of raw water flowing to the water softener main unit 100 to raw water flowing to the connecting water pipe 230.

[0096] The second flow meter 320 installed on the connecting water pipe 230 displays the flow rate through the connecting water pipe 230 to the soft water outlet pipe 220 in real time;

[0097] Determine whether the flow data displayed by the second flow meter 320 is equal to the calculated raw water flow rate Q2. If so, stop operating the electric regulating valve 240.

[0098] Optionally, the second flow meter 320 is an ultrasonic flow meter, an electromagnetic flow meter, or a vortex flow meter, all of which have the function of displaying instantaneous flow and cumulative flow.

[0099] Regarding how to use H 目标 Calculate Q2 using the formula ×(Q1+Q2)=H1×Q1+H2×Q2, with an example as follows:

[0100] Assuming the hard water has a hardness of 350 and a volume of 0.5L, and the soft water has a hardness of 20 and a volume of 1L, then the hardness of the mixed water is (20×1+350×0.5) / 1.5=130.

[0101] Regarding the adjustment of the electric regulating valve 240 of the water softener, the raw water flow rate mixed with the softened water is Q2. Taking the outlet water hardness H1 = 30 - 20 × {current softened water volume / (27672 × 13 / H2 / 1000 × 1.0278)} as an example, the following is an illustration:

[0102] Assuming the raw water hardness is 350 and the current soft water volume is 1m³ 2 At that time, according to the water hardness H1 = 30 - 20 × {current soft water volume / (27672 × 13 / H2 / 1000 × 1.0278)}, the water hardness H1 is calculated to be 10. If the user requires soft water with a hardness of 50, according to 50 × (Q1 + Q2) = 10 × Q1 + 350 × Q2, if Q1 is 20 L / min, then Q2 needs to be 2.67 L / min. At this point, simply adjust the electric regulating valve 240 until the value displayed on the second flow meter 320 is 2.67 L / min.

[0103] The present invention also discloses a computer-readable storage medium storing a water softener outlet water hardness adjustment program, which, when executed by a processor, can implement the steps of the above-described water softener outlet water hardness adjustment method.

[0104] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for adjusting the hardness of water output from a water softener, characterized in that, For use in a water softener, the method for adjusting the hardness of the water output from the water softener includes: Obtain the raw water hardness H2 of the raw water entering the water softener main unit (100); Obtain the values ​​of A and B of the water softener main unit (100) under the raw water hardness H2; Based on the current soft water volume and the regenerated soft water volume in the water softener main unit (100), the soft water hardness H1 of the softened water produced by the water softener main unit (100) is calculated using a software algorithm, wherein the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume). Obtain the softened water flow rate Q1 of the softened water flowing out of the main unit (100) of the water softener; According to H 目标 Calculate Q2 using the formula ×(Q1+Q2)=H1×Q1+H2×Q2, where H 目标 Target water hardness; Adjust the electric regulating valve (240) of the water softener so that the raw water flow rate of the raw water mixed with the softened water is Q2.

2. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, The specific steps to obtain the values ​​of A and B of the water softener main unit (100) under the raw water hardness H2 are as follows: retrieve the values ​​of A and B from the constant database; The method for establishing the constant database includes the following steps: Select raw water with different hardness and pass it into the main unit (100) of the water softener to conduct multiple water flow tests on the water softener; In each water flow experiment, two sets of data on H1, current soft water volume and regenerated soft water volume are collected, and the soft water hardness H1 = AB × (current soft water volume / regenerated soft water volume) is substituted into the equation to obtain two equations. The two equations are combined to calculate A and B. H1 is obtained by measuring the softened water discharged to the main unit (100) of the water softener. Establish a database of constants for different raw water hardness and their corresponding A and B values.

3. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, The method for adjusting the hardness of the water softener output also includes: To obtain the specific value of the regenerated soft water volume, the regenerated soft water volume = C × D / H2 / 1000 × 1.0278; Where D is the amount of resin; C = Experimental regenerated soft water volume / 1.0278 × 1000 × 350 / D, where the experimental regenerated soft water volume is the amount of soft water generated during one regeneration cycle of the water softener when the water softener is tested as a whole with a raw water hardness of 350.

4. The method for adjusting the hardness of water from a water softener according to claim 3, characterized in that, The range of resin quantity D is: 10L≤D≤20L; And / or, the range of C is: 20000≤C≤50000.

5. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, Obtaining the raw water hardness H2 of the raw water entering the water softener main unit (100) specifically includes: Select hardness testing paper; The hardness test paper is immersed in a container filled with raw water and soaked for a first target time T1. Remove the hardness test paper and shake off any remaining water on it. The hardness test paper is allowed to react with the second target in air for a time T2. The hardness test paper that changes color is compared with the color card to obtain the original water hardness H2.

6. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, Obtaining the raw water hardness H2 of the raw water entering the water softener main unit (100) specifically includes: Establish a database of tap water hardness in different regions; Locate the water softener and obtain its location information; The hardness of tap water at the location of the water softener is retrieved from the hardness database and used as the raw water hardness H2.

7. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, The method for adjusting the hardness of the water softener output also includes: To obtain the current soft water volume, the current soft water volume = regenerated soft water volume - used soft water volume; The amount of soft water used is cumulatively measured by a first flow meter (310) located downstream of the soft water outlet of the main unit (100) of the water softener.

8. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, Specifically, the softened water flow rate Q1 of the softened water flowing out of the main unit (100) of the water softener is obtained as follows: The soft water flow rate Q1 is measured using a first flow meter (310) located downstream of the soft water outlet of the main unit (100) of the water softener.

9. The method for adjusting the hardness of water output from a water softener according to claim 1, characterized in that, Adjusting the electric regulating valve (240) of the water softener to make the raw water flow rate of the raw water mixed with the softened water Q2 is specifically as follows: Operate the electric regulating valve (240) located at the connection between the raw water inlet pipe (210) and the connecting water pipe (230) on the water softener to change the ratio of raw water flowing to the main unit (100) of the water softener to raw water flowing to the connecting water pipe (230); A second flow meter (320) installed on the connecting water pipe (230) displays in real time the flow rate through the connecting water pipe (230) to the soft water outlet pipe (220); Determine whether the flow data displayed by the second flow meter (320) is equal to the calculated raw water flow rate Q2. If so, stop operating the electric regulating valve (240).

10. A water softener, characterized in that, The water softener output water hardness adjustment method according to any one of claims 1-9, wherein the water softener comprises: Water softener main unit (100); Piping assembly (200), the piping assembly (200) includes a raw water inlet pipe (210), a soft water outlet pipe (220), a connecting water pipe (230) and an electric regulating valve (240). The raw water inlet pipe (210) is connected to the raw water inlet of the water softener main unit (100). The soft water outlet pipe (220) is connected to the soft water outlet of the water softener main unit (100). One end of the connecting water pipe (230) is connected to the raw water inlet pipe (210) and the other end is connected to the soft water outlet pipe (220). The electric regulating valve (240) is located at the connection between the raw water inlet pipe (210) and the connecting water pipe (230). The flow component (300) includes a first flow meter (310) and a second flow meter (320). The first flow meter (310) is installed on the soft water outlet pipe (220) and is located near the soft water outlet. The second flow meter (320) is installed on the connecting water pipe (230).

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