Control method of water softening equipment and water softening equipment

Abstract

The invention relates to the technical field of water purification equipment, particularly provides a control method of water softening equipment and the water softening equipment, and aims to solve the problems that the existing water softening equipment is not accurate enough in detection of the salt amount in a salt box, and the regeneration effect of resin is influenced. In order to achieve the purpose, the water softening equipment comprises a salt box and resin, and when a regeneration mode needs to be executed on the resin, the control method comprises the steps that water is added into the salt box and dissolved into saline water; obtaining a regeneration capacity value of the saline water; and selectively sending a salt supplementing prompt signal to the user according to the regeneration capacity value. Through the setting, on the basis of salt content detection, the regeneration capacity value of the saline water can be detected in the regeneration preparation stage of the resin so as to judge whether the regeneration capacity of the saline water can meet the regeneration requirement of the resin or not, so that a user is reminded to supplement salt in time when the regeneration capacity of the saline water is insufficient; the influence on the regeneration effect of the resin due to failure of salt content detection or failure of timely salt supplement by a user is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification equipment, and particularly provides a control method of a water softening device and the water softening device. BACKGROUND

[0002] The water softener can soften water quality, reduce the generation of scale in domestic water, improve washing effect, and is beneficial to human health. The working principle is to exchange the hardness ions such as calcium and magnesium in hard water by using resin to reduce the hardness value.

[0003] When the hardness ions in the resin reach saturation, the softening capacity is lost, and salt water needs to be introduced to exchange the hardness ions in the resin to restore the activity. A salt tank for storing salt particles is usually arranged on the water softener, and when the regeneration mode needs to be performed, water is only needed to be added to the salt tank to dissolve the salt particles into salt water. Since the amount of salt in the salt tank directly determines the regeneration capacity of the salt water, the salt needs to be supplemented in time when the amount of salt is insufficient. Therefore, some water purification equipment has a salt amount detection function, which can remind the user to supplement salt in time.

[0004] However, the existing water softening device is not accurate enough in detecting the amount of salt in the salt tank, which affects the regeneration effect of the resin.

[0005] Correspondingly, there is a need in the field for a new technical solution to solve the above problems. SUMMARY

[0006] The present application aims to solve the above technical problems, i.e., the existing water softening device is not accurate enough in detecting the amount of salt in the salt tank, which affects the regeneration effect of the resin.

[0007] In a first aspect, the present application provides a control method of a water softening device, the water softening device comprising a salt tank and a resin, when the regeneration mode needs to be performed on the resin, the control method of the present application comprises: adding water to the salt tank and dissolving it into salt water; obtaining a regeneration capacity value of the salt water; and selectively sending a salt supplement prompt signal to the user according to the regeneration capacity value.

[0008] In the preferred technical solution of the above control method, the step of "selectively sending a salt supplement prompt signal to the user according to the regeneration capacity value" specifically comprises: comparing the regeneration capacity value with a preset value; and selectively sending a salt supplement prompt signal to the user according to the comparison result.

[0009] In the preferred technical solution of the above control method, the step of "selectively sending a salt supplement prompt signal to the user according to the comparison result" specifically comprises: if the regeneration capacity value is less than the preset value, sending a salt supplement prompt signal to the user; and / or if the regeneration capacity value is not less than the preset value, not sending a salt supplement prompt signal to the user.

[0010] In the preferred technical solutions of the control method, the step of selectively sending the salt replenishment prompt signal to the user according to the comparison result specifically comprises: if the regeneration capability value is not less than the preset value, not sending the salt replenishment prompt signal to the user; and / or if the regeneration capability value is less than the preset value, further calculating a difference value between the regeneration capability value and the preset value; if the difference value is greater than the preset difference value, sending the salt replenishment prompt signal to the user; and / or if the difference value is not greater than the preset difference value, not sending the salt replenishment prompt signal to the user.

[0011] In the preferred technical solutions of the control method, the salt replenishment prompt signal comprises a first prompt signal, a second prompt signal and a third prompt signal with the degree of salt deficiency being successively increased, and the step of selectively sending the salt replenishment prompt signal to the user according to the regeneration capability value specifically comprises: comparing the regeneration capability value with a first preset value, a second preset value and a third preset value, wherein the first preset value is less than the second preset value which is less than the third preset value; if the regeneration capability value is not less than the third preset value, not sending the salt replenishment prompt signal to the user; and / or if the regeneration capability value is less than the third preset value and not less than the second preset value, sending the first prompt signal to the user; and / or if the regeneration capability value is less than the second preset value and not less than the first preset value, sending the second prompt signal to the user; and / or if the regeneration capability value is less than the first preset value, sending the third prompt signal to the user; and / or before the step of obtaining the regeneration capability value of the brine, the control method further comprises: judging whether the salt particles in the salt tank are all dissolved; and selectively obtaining the regeneration capability value of the brine according to the judgment result.

[0012] In the preferred technical solutions of the control method, the step of selectively obtaining the regeneration capability value of the brine according to the judgment result specifically comprises: if the salt particles in the salt tank are all dissolved, obtaining the regeneration capability value of the brine; and / or if the salt particles in the salt tank are not all dissolved, not obtaining the regeneration capability value of the brine.

[0013] In the preferred technical solutions of the control method, the step of obtaining the regeneration capability value of the brine specifically comprises: obtaining the conductivity of the brine; the step of selectively sending the salt replenishment prompt signal to the user according to the regeneration capability value specifically comprises: selectively sending the salt replenishment prompt signal to the user according to the conductivity; or the step of obtaining the regeneration capability value of the brine specifically comprises: obtaining the concentration value of the brine; the step of selectively sending the salt replenishment prompt signal to the user according to the regeneration capability value specifically comprises: selectively sending the salt replenishment prompt signal to the user according to the concentration value.

[0014] In a preferred embodiment of the above control method, during the normal water production process of the water softening equipment, the control method of the present invention further includes: obtaining the amount of salt in the salt tank; and selectively sending a corresponding salt replenishment prompt signal to the user based on the amount of salt.

[0015] In a preferred embodiment of the above control method, the salt replenishment prompt signal includes a fourth, a fifth, and a sixth prompt signal with progressively increasing urgency. The step of "selectively sending corresponding salt replenishment prompt signals to the user based on the salt quantity" specifically includes: comparing the salt quantity with a first preset salt quantity, a second preset salt quantity, and a third preset salt quantity, wherein the first preset salt quantity is less than the second preset salt quantity, which is less than the third preset salt quantity; if the salt quantity is less than the third preset salt quantity but not less than the second preset salt quantity, then sending the fourth prompt signal to the user; and / or if the salt quantity is less than the second preset salt quantity but not less than the first preset salt quantity, then sending the fifth prompt signal to the user; and / or if the salt quantity is less than the first preset salt quantity, then sending the sixth prompt signal to the user.

[0016] In a second aspect, the present invention provides a water softening device, the water softening device including a controller configured to perform the control method described above.

[0017] When employing the above technical solution, the water softening device of the present invention includes a brine tank and resin. When the resin needs to be regenerated, the control method of the present invention includes: adding water to the brine tank and dissolving it into brine; obtaining the regeneration capacity value of the brine; and selectively sending a salt replenishment reminder signal to the user based on the regeneration capacity value. This setup allows for the detection of the brine's regeneration capacity value after its generation to assess whether the brine's regeneration capacity meets the resin's regeneration requirements. It also promptly reminds the user to replenish salt when the brine's regeneration capacity is insufficient, thereby achieving multiple detections of salt levels and preventing situations where traditional salt level detection methods fail or the user forgets to replenish salt, resulting in insufficient resin regeneration.

[0018] Furthermore, the step of "selectively sending salt replenishment prompts to users based on the regeneration capacity value" specifically includes: comparing the regeneration capacity value with a preset value; and selectively sending salt replenishment prompts to users based on the comparison result. The preset value can be used to determine the regeneration capacity value corresponding to sufficient resin regeneration, and then the difference between the two can be used to determine whether salt is insufficient.

[0019] Furthermore, the step of "selectively sending a salt replenishment prompt signal to the user based on the comparison results" specifically includes: sending a salt replenishment prompt signal to the user if the regeneration capacity value is less than a preset value; and / or not sending a salt replenishment prompt signal to the user if the regeneration capacity value is not less than the preset value. With this setting, the system will prompt the user to replenish salt whenever the regeneration capacity value of the brine is lower than the preset value, ensuring that the resin can only be regenerated after the brine's regeneration capacity fully meets the standard, thus guaranteeing sufficient resin regeneration.

[0020] Furthermore, the step of "selectively sending a salt replenishment prompt signal to the user based on the comparison results" specifically includes: if the regeneration capacity value is not less than a preset value, then no salt replenishment prompt signal is sent to the user; and / or if the regeneration capacity value is less than the preset value, then the difference between the regeneration capacity value and the preset value is further calculated; if the difference is greater than the preset difference, then a salt replenishment prompt signal is sent to the user; and / or if the difference is not greater than the preset difference, then no salt replenishment prompt signal is sent to the user. With this setting, as long as the regeneration capacity value of the brine is not significantly different from the preset value, the user will not be prompted to replenish salt. Instead, the equipment will be allowed to complete the regeneration mode first, and salt replenishment will only be performed after the regeneration mode ends, ensuring the timeliness of the regeneration mode and the continuity of equipment operation.

[0021] Furthermore, the salt replenishment prompt signal of the present invention includes a first prompt signal, a second prompt signal, and a third prompt signal with progressively increasing salt deficiency levels. The step of "selectively sending salt replenishment prompt signals to the user based on the regeneration capacity value" specifically includes: comparing the regeneration capacity value with a first preset value, a second preset value, and a third preset value, wherein the first preset value is less than the second preset value and less than the third preset value; if the regeneration capacity value is not less than the third preset value, then no salt replenishment prompt signal is sent to the user; and / or if the regeneration capacity value is less than the third preset value and not less than the second preset value, then a first prompt signal is sent to the user; and / or if the regeneration capacity value is less than the second preset value and not less than the first preset value, then a second prompt signal is sent to the user; and / or if the regeneration capacity value is less than the first preset salt value, then a third prompt signal is sent to the user; and / or before "obtaining the regeneration capacity value of the brine", the control method of the present invention further includes: determining whether all salt particles in the salt tank have dissolved; and selectively obtaining the regeneration capacity value of the brine based on the determination result.

[0022] Furthermore, the step of "selectively obtaining the regeneration capacity value of the brine based on the judgment result" specifically includes: if all the salt particles in the salt tank have dissolved, then the regeneration capacity value of the brine is obtained; and / or if not all the salt particles in the salt tank have dissolved, then the regeneration capacity value of the brine is not obtained. With this setting, if the salt particles are not completely dissolved, it indicates that the brine has reached saturation and the regeneration capacity meets the requirements, thus eliminating the need to further test the regeneration capacity value of the brine, simplifying the salt quantity detection procedure.

[0023] Furthermore, the step of "obtaining the regeneration capacity value of the brine" specifically includes: obtaining the conductivity of the brine; the step of "selectively sending a salt replenishment prompt signal to the user based on the regeneration capacity value" specifically includes: selectively sending a salt replenishment prompt signal to the user based on the conductivity; or the step of "obtaining the regeneration capacity value of the brine" specifically includes: obtaining the concentration value of the brine; the step of "selectively sending a salt replenishment prompt signal to the user based on the regeneration capacity value" specifically includes: selectively sending a salt replenishment prompt signal to the user based on the concentration value. This configuration provides multiple methods for detecting the regeneration capacity value, facilitating flexible implementation.

[0024] Furthermore, during the normal water production process of the water softening equipment, the control method of the present invention also includes: acquiring the salt level in the brine tank; and selectively sending a corresponding salt replenishment reminder signal to the user based on the salt level. With this setup, the salt level can be routinely monitored at any stage of equipment operation to ensure sufficient salt and avoid affecting the progress of the regeneration mode.

[0025] Furthermore, the salt replenishment alert signals include a fourth, fifth, and sixth alert signal, with the urgency level increasing sequentially. The step of "selectively sending appropriate salt replenishment alert signals to the user based on the salt level" specifically includes: comparing the salt level with a first, second, and third preset salt level, where the first preset salt level is less than the second, which in turn is less than the third; if the salt level is less than the third preset salt level but not less than the second preset salt level, then a fourth alert signal is sent to the user; and / or if the salt level is less than the second preset salt level but not less than the first preset salt level, then a fifth alert signal is sent to the user; and / or if the salt level is less than the first preset salt level, then a sixth alert signal is sent to the user. This setting allows for the urgency level of salt replenishment to be graded based on the remaining salt level in the salt tank, with the alert intensity increasing progressively to ensure that the user can replenish salt in a timely manner.

[0026] Furthermore, the water softening device provided by the present invention, based on the above-mentioned control method, possesses the technical effects of the above-mentioned control method. Compared with the water softening device before the improvement, the water softening device of the present invention has two different salt content detection schemes, which can effectively supplement the shortcomings of the existing salt content detection schemes, improve the accuracy and reliability of salt content detection, and ensure the regeneration effect of resin. Attached Figure Description

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of the water softening device of the present invention; Figure 2This is a flowchart of the control method for the water softening equipment of the present invention; Figure 3 This is a flowchart of a first embodiment of the control method for the water softening equipment of the present invention; Figure 4 This is a flowchart of a second embodiment of the control method for the water softening equipment of the present invention; Figure 5 This is a flowchart of a third embodiment of the control method for the water softening equipment of the present invention.

[0028] List of reference signs: 1. Salt tank; 2. Softening filter; 3. Regeneration pipeline; 4. Horizontal bar. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0030] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "front," "rear," etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0031] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Based on the background art, existing water softening equipment suffers from inaccurate salt level detection in the brine tank, affecting resin regeneration. This invention provides a control method and the water softening equipment itself. By detecting the regeneration capacity of the brine during the resin regeneration preparation stage, it determines whether the brine's regeneration capacity meets the resin's regeneration requirements. Furthermore, when the brine's regeneration capacity is insufficient, it promptly reminds the user to add salt, preventing the failure of traditional salt level detection methods or the user's failure to add salt in a timely manner from affecting the resin regeneration effect.

[0033] Specifically, such as Figure 1As shown, the water softening device of the present invention includes a salt tank 1, a water supply pipeline, a softening filter 2, and a regeneration pipeline 3. The salt tank 1 can store salt particles. The salt tank 1 is connected to an external water source through the water supply pipeline. The water supply pipeline can introduce water into the salt tank 1 to dissolve the salt particles into brine. The softening filter 2 is filled with resin. The two ends of the regeneration pipeline 3 are connected to the salt tank 1 and the softening filter 2 respectively, and can introduce the brine in the salt tank 1 into the resin layer for softening.

[0034] In a preferred embodiment of the salt tank 1 of the present invention, a horizontal grid 4 is provided at the bottom of the salt tank 1, which divides the salt tank 1 into upper and lower chambers. The two chambers are connected by water permeable holes on the horizontal grid 4. Salt particles are placed on the horizontal grid 4. The outlet of the water supply pipe is connected to the lower chamber. When the resin needs to be regenerated, water is first introduced into the lower chamber through the water supply pipe. As the water volume increases, the water level gradually rises and overflows the horizontal grid 4 through the water permeable holes to dissolve the salt particles. Since the maximum salt dissolution capacity of water is determined, the salt particles will not continue to dissolve when the brine reaches saturation. Therefore, this setting facilitates the control of the salt dissolution capacity by controlling the water supply volume.

[0035] Once the water replenishment amount is determined, insufficient salt content will result in a lack of sodium ions in the brine to replace calcium and magnesium ions in the resin, leading to inadequate resin regeneration and affecting the resin's softening ability.

[0036] Therefore, in order to monitor the amount of salt in salt tank 1 in real time, a salt detection device, such as an infrared detector, is also installed in salt tank 1. Specifically, the remaining amount of salt can be obtained by detecting the height of the salt particles in salt tank 1, and the user will be reminded to add salt in time when the amount of salt is insufficient.

[0037] However, in practical use, infrared detectors have certain limitations. Due to the limited range of their rays, they cannot cover all areas within the salt tank 1, and can only detect the height of salt particles within a limited area. If the distribution of salt particles is not uniform, differences in the height of salt particles in different areas will occur, leading to deviations in the salt quantity detection results. In addition, reflected light from the inner wall of the salt tank 1 and external ambient light can also interfere with the infrared light, affecting the detection results and resulting in false alarms of insufficient salt when the salt quantity is sufficient, or missed alarms when the salt quantity is insufficient.

[0038] Based on this, the water softening equipment of the present invention is equipped with a brine detection device, such as a conductivity sensor or a salt concentration meter, in the brine tank. This device can obtain the regeneration capacity of the brine after the salt particles dissolve in the water. The regeneration capacity of the brine is used to assess whether it meets the regeneration requirements of the resin, thus preventing the introduction of brine with insufficient regeneration capacity into the resin and affecting the regeneration effect of the resin.

[0039] Preferably, such as Figure 2As shown, when a regeneration mode needs to be performed on the resin, the control method provided by this invention includes: S100: Add water to the salt tank and dissolve it into brine; S200: Obtain the regeneration capacity value of the brine; S200: Based on the regeneration capacity value, selectively send salt replenishment prompt signals to the user.

[0040] It should be noted that the regeneration capacity value characterizes the regeneration capacity of the brine on the resin, that is, the ability to replace calcium and magnesium ions in the resin. It is related to the concentration of sodium ions in the brine. In practical applications, the regeneration capacity value can be the concentration of the brine or the conductivity of the brine, etc.

[0041] Specifically, when the resin needs to be regenerated, a preset amount of water is first injected into the brine tank through the water supply line. Then, the system is allowed to stand for a period of time to allow the salt particles to fully dissolve. The standing time can be flexibly set according to the water volume, but is usually more than 40 minutes. After the salt particles and water are fully dissolved, the system does not immediately introduce the brine into the resin. Instead, it first tests the regeneration capacity of the brine to assess whether the regeneration capacity meets the resin's regeneration requirements. If the regeneration capacity of the brine is insufficient, the system will promptly remind the user to add salt and pause the regeneration mode. The brine will only be introduced into the resin for regeneration after the salt content has been replenished and reaches the preset regeneration capacity value.

[0042] By assessing the regeneration capacity of the brine before the formal start of the resin regeneration mode, traditional detection methods such as infrared detection devices can be effectively supplemented, preventing situations where traditional salt quantity detection methods fail or users forget to add salt, resulting in insufficient resin regeneration.

[0043] More preferably, such as Figure 3 and Figure 4 As shown, the step of "selectively sending salt replenishment prompts to users based on regeneration capacity values" specifically includes: S310: Compare the regeneration capacity value with the preset value; S320: Based on the comparison results, selectively send salt replenishment prompts to the user.

[0044] The preset value can be used to determine the regeneration capacity value corresponding to the full regeneration of the resin, and then the difference between the two can be used to determine whether salt replenishment is needed. Preferably, in this application, the preset value is set to the regeneration capacity value corresponding to saturated brine at room temperature.

[0045] In a first preferred embodiment of the control method of the present invention, such as Figure 3 As shown, the step of "selectively sending salt replenishment prompts to users based on comparison results" specifically includes: S321: If the regeneration capacity value is not less than the preset value, no salt replenishment prompt signal will be sent to the user; S322: If the regeneration capacity value is less than the preset value, a salt replenishment prompt signal is sent to the user.

[0046] In other words, the system will prompt the user to add salt whenever the regeneration capacity of the brine is lower than the preset value. Only after the regeneration capacity of the brine fully meets the standard can the resin be regenerated, thus ensuring the regeneration effect of the resin.

[0047] In a second preferred embodiment of the control method of the present invention, such as Figure 4 As shown, the step of "selectively sending salt replenishment prompts to users based on comparison results" specifically includes: S321: If the regeneration capacity value is not less than the preset value, no salt replenishment prompt signal will be sent to the user; S322: If the regeneration capacity value is less than the preset value, then the difference between the regeneration capacity value and the preset value is further calculated; S323: If the difference is greater than the preset difference, a salt replenishment prompt signal is sent to the user; S324: If the difference is not greater than the preset difference, no salt replenishment prompt signal will be sent to the user.

[0048] Specifically, when the obtained regeneration capacity value is less than the preset value, the system will not directly send a salt replenishment prompt signal to the user. Instead, it will further calculate the difference between the two. If the difference between the regeneration capacity value and the preset value is small, it means that the actual regeneration capacity is not much different from the ideal regeneration capacity, and the impact on the resin regeneration effect is limited. Therefore, the system will not prompt the user to replenish salt, but will prioritize completing the regeneration mode. Salt replenishment will only be performed after the regeneration mode ends, avoiding the time wasted on salt replenishment and dissolution, and ensuring the timeliness of the regeneration mode and the continuity of equipment operation. Only when the regeneration capacity value differs significantly from the preset value will a salt replenishment prompt signal be sent to the user, and the regeneration mode will be paused.

[0049] Regarding the regeneration capacity value, this application provides two preferred implementation methods.

[0050] In a first preferred embodiment, the regeneration capacity value is the conductivity of the brine. The conductivity of the brine is obtained by installing a conductivity sensor (such as a conductivity test probe) at the bottom of the brine tank. Therefore, the control method of the present invention includes: To obtain the conductivity of the salt water; Based on conductivity, selectively send salt replenishment prompts to users; If the conductivity is less than the preset conductivity, a salt replenishment prompt signal is sent to the user; If the conductivity is not less than the preset conductivity, no salt replenishment prompt signal will be sent to the user. Or If the conductivity is less than the preset conductivity, then the difference between the conductivity and the preset conductivity is further calculated. If the difference is greater than the preset difference, a salt replenishment prompt signal will be sent to the user; If the difference is not greater than the preset difference, no salt replenishment prompt signal will be sent to the user.

[0051] The preset conductivity is preferably set to 1.5 mS / cm, and the preset difference is preferably set to 0.3 mS / cm.

[0052] In a second preferred embodiment, the regeneration capacity value is the concentration value of the brine. The concentration value of the brine is obtained by installing a brine concentration meter at the bottom of the brine tank. Therefore, the control method of the present invention includes: Obtain the concentration value of the saline solution; Based on the concentration value, selectively send salt replenishment reminder signals to the user; If the concentration value is lower than the preset concentration value, a salt replenishment prompt signal will be sent to the user; If the concentration value is not less than the preset concentration value, no salt replenishment prompt signal will be sent to the user. Or If the concentration value is less than the preset concentration value, the difference between the concentration value and the preset concentration value is further calculated. If the difference is greater than the preset difference, a salt replenishment prompt signal will be sent to the user; If the difference is not greater than the preset difference, no salt replenishment prompt signal will be sent to the user.

[0053] The preset concentration value is preferably set to 26.5%, and the preset difference value is preferably set to 2.5%.

[0054] Furthermore, to further improve the accuracy of salt replenishment, preferably, this application can also divide the salt replenishment prompt signal into a first prompt signal, a second prompt signal, and a third prompt signal according to the principle of progressively increasing salt deficiency. Therefore, the step of "selectively sending salt replenishment prompt signals to users based on regeneration capacity values" specifically includes: The regeneration capacity value is compared with a first preset value, a second preset value, and a third preset value, wherein the first preset value is less than the second preset value and the third preset value. If the regeneration capacity value is not less than the third preset value, no salt replenishment prompt signal will be sent to the user; If the regeneration capacity value is less than the third preset value and not less than the second preset value, a first prompt signal will be sent to the user. If the regeneration capacity value is less than the second preset value and not less than the first preset value, a second prompt signal is sent to the user. If the regeneration capacity value is less than the first preset salt value, a third prompt signal will be sent to the user.

[0055] If the regeneration capacity is the conductivity, then the first preset value is preferably set to 0.5 mS / cm, the second preset value is set to 1.0 mS / cm, and the third preset value is set to 1.5 mS / cm.

[0056] If the regeneration capacity value is a concentration value, then it is preferable to set the first preset value to 5%, the second concentration value to 15%, and the third concentration value to 26.5%.

[0057] Accordingly, the first prompt signal is a flashing yellow light + APP message push, the message being "Insufficient salt, it is recommended to add salt at least the first amount"; the second prompt signal is a flashing red light + buzzer alarm + APP message push, the message being "Insufficient salt, it is recommended to add salt at least the second amount", and the system will also disable the automatic operation of the regeneration mode; the third prompt signal is an APP message push, the message being "Insufficient salt, it is recommended to add salt at least the third amount", wherein the first amount of salt added is less than the second amount of salt added, which is less than the third amount of salt added. In this application, taking an 8kg salt tank as an example, the preferred setting is 2kg for the first amount of salt added, 4kg for the second amount of salt added, and 6kg for the third amount of salt added.

[0058] Since brine stops dissolving salt particles once it reaches saturation, the presence of undissolved salt particles in the tank after water is injected and fully dissolved indicates saturation. If undissolved salt particles remain, the brine is saturated and possesses sufficient regeneration capacity. In this case, further regeneration capacity testing is unnecessary, and the brine can be directly introduced into the resin for regeneration, simplifying the salt content detection process. Specifically, undissolved salt particles can be detected using an infrared detector or by installing a high-definition vision device in the brine tank.

[0059] Preferably, such as Figure 5 As shown, before "obtaining the regeneration capacity value of the brine", the control method of the present invention further includes: S400: Determines whether all the salt particles in the salt tank have dissolved; S500: Based on the judgment result, selectively obtain the regeneration capacity value of the brine.

[0060] More preferably, the step of "selectively obtaining the regeneration capacity value of the brine based on the judgment result" specifically includes: S510: If all the salt particles in the salt tank have dissolved, obtain the regeneration capacity value of the brine. S520: If not all salt particles in the salt tank are dissolved, the regeneration capacity value of the brine is not obtained.

[0061] Traditional salinity detection devices (such as infrared detectors) can detect salinity at any stage of the equipment. For example, by detecting salinity during the normal water production stage of the equipment, salinity monitoring can be normalized. By acquiring changes in salinity in real time, users can be given advance reminders to replenish salinity.

[0062] Preferably, during the normal water production process of the water softening equipment, the control method of the present invention further includes: To determine the amount of salt in the salt tank; Based on the salt level, the system selectively sends corresponding salt replenishment reminders to the user.

[0063] This allows for routine monitoring of salt levels at any stage of equipment operation, ensuring sufficient salt levels and preventing disruption to the regeneration process.

[0064] Similarly, the salt replenishment alert signals also include a fourth, fifth, and sixth alert signal, with the urgency of salt replenishment increasing sequentially. The step of "selectively sending appropriate salt replenishment alert signals to the user based on the salt level" specifically includes: The amount of salt is compared with the first preset amount of salt, the second preset amount of salt, and the third preset amount of salt, wherein the first preset amount of salt is less than the second preset amount of salt, which is less than the third preset amount of salt. If the amount of salt is less than the third preset amount of salt and not less than the second preset amount of salt, a fourth prompt signal will be sent to the user. If the amount of salt is less than the second preset amount of salt and not less than the first preset amount of salt, a fifth prompt signal will be sent to the user. If the salt content is less than the first preset salt content, a sixth prompt signal will be sent to the user.

[0065] This setting allows for the classification of the urgency of salt replenishment based on the remaining salt level in the salt tank, with the warning intensity increasing progressively to ensure users can replenish salt in a timely manner.

[0066] For example, the first preset salt amount is preferably set to 1% of the standard salt amount, the second preset salt amount is set to 5% of the standard salt amount, and the third preset salt amount is set to 20% of the standard salt amount.

[0067] Correspondingly, the fourth warning signal is a flashing yellow light + APP message push, with the message "Insufficient salt, it is recommended to replenish within 3 days"; the fifth warning signal is a flashing red light + buzzer alarm + APP message push, with the message "Please replenish salt immediately, otherwise the supply of soft water will be stopped after 24 hours", and the system will also disable the automatic operation of the regeneration mode; the sixth warning signal is an APP message push, with the message "Soft water supply has stopped, please replenish salt and reset", and the raw water inlet will be closed to stop water production.

[0068] It should be noted that after the fifth prompt signal is sent for a certain period of time, preferably 24 hours, the system will automatically send a sixth prompt signal.

[0069] Furthermore, the water softening device provided by the present invention, based on the above-mentioned control method, possesses the technical effects of the above-mentioned control method. Compared with the water softening device before the improvement, the water softening device of the present invention has two different salt content detection schemes, which can effectively supplement the shortcomings of the existing salt content detection schemes, improve the accuracy and reliability of salt content detection, and ensure the regeneration effect of resin.

[0070] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control method of a water softening apparatus, characterized by, The soft water equipment comprises a salt tank (1) and resin, and the control method of the present application comprises the following steps: water is added to the salt tank (1) and dissolved into brine; a regeneration capacity value of the brine is obtained; a salt replenishment prompt signal is selectively sent to the user according to the regeneration capacity value.

2. The control method according to claim 1, characterized by, The step of "selectively sending a salt replenishment prompt signal to the user according to the regeneration capacity value" specifically comprises the following steps: comparing the regeneration capacity value with a preset value; selectively sending a salt replenishment prompt signal to the user according to the comparison result.

3. The control method according to claim 2, characterized by, The step of "selectively sending a salt replenishment prompt signal to the user according to the comparison result" specifically comprises the following steps: if the regeneration capacity value is less than the preset value, a salt replenishment prompt signal is sent to the user; and / or if the regeneration capacity value is not less than the preset value, no salt replenishment prompt signal is sent to the user.

4. The control method according to claim 2, characterized by, The step of "selectively sending a salt replenishment prompt signal to the user according to the comparison result" specifically comprises the following steps: if the regeneration capacity value is not less than the preset value, no salt replenishment prompt signal is sent to the user; and / or if the regeneration capacity value is less than the preset value, a difference value between the regeneration capacity value and the preset value is further calculated; if the difference value is greater than a preset difference value, a salt replenishment prompt signal is sent to the user; and / or if the difference value is not greater than the preset difference value, no salt replenishment prompt signal is sent to the user.

5. The control method according to claim 1, characterized by, The salt replenishment prompt signal comprises a first prompt signal, a second prompt signal and a third prompt signal with the degree of salt deficiency being successively increased, and the step of "selectively sending a salt replenishment prompt signal to the user according to the regeneration capacity value" specifically comprises the following steps: comparing the regeneration capacity value with a first preset value, a second preset value and a third preset value, wherein the first preset value is less than the second preset value which is less than the third preset value; if the regeneration capacity value is not less than the third preset value, no salt replenishment prompt signal is sent to the user; and / or if the regeneration capacity value is less than the third preset value and not less than the second preset value, the first prompt signal is sent to the user; and / or if the regeneration capacity value is less than the second preset value and not less than the first preset value, the second prompt signal is sent to the user; and / or if the regeneration capacity value is less than the first preset value, the third prompt signal is sent to the user; and / or Before the step of "obtaining the regeneration capacity value of the brine", the control method of the present application further comprises the following steps: judging whether the salt particles in the salt tank (1) are all dissolved; selectively obtaining the regeneration capacity value of the brine according to the judgment result.

6. The control method according to claim 5, characterized by The step of "selectively obtaining the regeneration capacity value of the brine according to the judgment result" specifically comprises the following steps: if the salt particles in the salt tank (1) have all been dissolved, the regeneration capacity value of the brine is obtained; and / or if the salt particles in the salt tank (1) have not all been dissolved, the regeneration capacity value of the brine is not obtained.

7. The control method according to claim 1, characterized by, The step of "obtaining the regeneration capacity value of the brine" specifically comprises the following steps: obtaining the conductivity of the brine; The step of "selectively sending a salt replenishment prompt signal to the user according to the regeneration capacity value" specifically comprises the following steps: According to the conductivity, a salt replenishment prompt signal is selectively sent to the user; or The step of "obtaining the regeneration capability value of the brine" specifically comprises: Obtaining a concentration value of the brine; The step of "selectively sending a salt replenishment prompt signal to the user according to the regeneration capability value" specifically comprises: According to the concentration value, a salt replenishment prompt signal is selectively sent to the user.

8. The control method according to any one of claims 1 to 7, characterized by, In the process of normal water production of the water softening device, the control method further comprises: Obtaining the salt amount in the salt tank (1); According to the salt amount, a corresponding salt replenishment prompt signal is selectively sent to the user.

9. The control method according to claim 8, characterized by, The salt replenishment prompt signal comprises fourth, fifth and sixth prompt signals with the emergency degree of salt replenishment being sequentially increased, and the step of "selectively sending a corresponding salt replenishment prompt signal to the user according to the salt amount" specifically comprises: Comparing the salt amount with a fourth, fifth and sixth preset salt amount, wherein the first preset salt amount is less than the second preset salt amount, which is less than the third preset salt amount; If the salt amount is less than the third preset salt amount and not less than the second preset salt amount, the fourth prompt signal is sent to the user; and / or If the salt amount is less than the second preset salt amount and not less than the first preset salt amount, the fifth prompt signal is sent to the user; and / or If the salt amount is less than the first preset salt amount, the sixth prompt signal is sent to the user.

10. A water softening apparatus characterised in that, The water softening device comprises a controller configured to execute the control method according to any one of claims 1 to 9.

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