Control method for water purifier and water purifier

Abstract

The present application relates to water purification equipment technical field, specifically provide a kind of control method and water purifier for water purifier, to solve the problem that the existing water purifier is caused by the fact that the sterilization of water purification pipeline cannot be effectively carried out, and the use experience of user is not good. To this end, the water purifier of the present application includes filter and sterilization device, the shell and electrolysis module are included in sterilization device, the shell has water inlet and water outlet, electrolysis module is set to be able to electrolytic out bactericidal substance, after starting sterilization device, the control method of the present application includes the following steps: the concentration C of bactericidal substance in water outlet is obtained in real time;Obtain preset concentration C0;According to the concentration C of bactericidal substance and preset concentration C0, selectively adjust the electrolysis intensity of electrolysis module. The present application can avoid the fact that the electrolysis intensity of electrolysis module is too low, and cannot effectively sterilize, while also can avoid the fact that the electrolysis intensity of electrolysis module is too high, and cause serious scale in sterilization device, greatly improve the use experience of user.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, specifically providing a control method for a water purifier and a water purifier. Background Technology

[0002] Existing ordinary reverse osmosis water purifiers, due to factors such as the ever-increasing size of the reverse osmosis membranes used, the inability of countertop models to achieve good flushing logic, the extensive use of phosphorus-based scale inhibitors, and long-term disuse, have led to bacterial growth in the areas in front of the membrane, pipes, and water tank.

[0003] In existing technologies, water purifiers cannot effectively sterilize, leading to bacterial growth and unpleasant odors in the water, which seriously affects the user experience. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems to a certain extent, that is, to solve the problem that the existing water purifiers cannot effectively sterilize the water purification pipeline, resulting in a poor user experience.

[0005] In a first aspect, the present invention provides a control method for a water purifier, the water purifier including a water purification pipeline, the water purification pipeline including a filter and a sterilization device arranged in series, the sterilization device including a housing and an electrolysis module disposed within the housing, the housing having an inlet and an outlet, the electrolysis module being configured to electrolyze a sterilizing substance, and after the sterilization device is activated, the control method including the following steps: acquiring in real time the concentration C of the sterilizing substance at the outlet; acquiring a preset concentration C0; selectively adjusting the electrolysis intensity of the electrolysis module according to the concentration C of the sterilizing substance and the preset concentration C0.

[0006] In the preferred embodiment of the control method for the water purifier described above, the step of "selectively adjusting the electrolysis intensity of the electrolysis module according to the concentration of the bactericidal substance" specifically includes: calculating the difference Δ = C - C0; comparing the difference Δ with the first preset value A1 and the second preset value A2 respectively; and selectively adjusting the electrolysis intensity of the electrolysis module according to the comparison result; wherein, A1 > 0 and A2 < 0.

[0007] In the preferred technical solution of the control method for the water purifier described above, the step of "selectively adjusting the electrolysis intensity of the electrolysis module according to the comparison result" specifically includes: if Δ > A1, then the electrolysis intensity of the electrolysis module is reduced.

[0008] In the preferred embodiment of the control method for the water purifier described above, the step of "selectively adjusting the electrolysis intensity of the electrolysis module according to the comparison result" specifically includes: if A2≤△≤A1, then the electrolysis intensity of the electrolysis module is not adjusted.

[0009] In the preferred technical solution of the control method for the water purifier described above, the step of "selectively adjusting the electrolysis intensity of the electrolysis module according to the comparison result" specifically includes: if Δ < A2, then the electrolysis intensity of the electrolysis module is increased.

[0010] In the preferred embodiment of the control method for the water purifier described above, the electrolysis module includes a first electrolysis component and a second electrolysis component. The first electrolysis component and / or the second electrolysis component includes at least one set of cathode electrodes and anode electrodes arranged sequentially. The electrolysis module also includes a proton exchange membrane. The cathode electrode and the anode electrode are arranged opposite to each other and are respectively located on both sides of the proton exchange membrane. After the sterilization device is started, the control method further includes: alternately operating the first electrolysis component and the second electrolysis component.

[0011] In the preferred embodiment of the control method for the water purifier described above, before starting the sterilization device, the control method further includes: obtaining the running time of the water purifier since the last execution of the sterilization mode; determining whether the running time has reached a set time; and selectively starting the sterilization device based on the determination result.

[0012] In the preferred technical solution of the control method for the water purifier described above, the step of "selectively activating the sterilization device according to the judgment result" specifically includes: if the judgment result is "yes", then further obtaining the current time; determining whether the current time is within a set time range; and selectively activating the sterilization device according to the judgment result.

[0013] In the preferred embodiment of the control method for the water purifier described above, after the sterilization device is started, the control method further includes: obtaining the duration for which the concentration C of the sterilizing substance is greater than a preset concentration; determining whether the duration exceeds a preset time; and selectively turning off the sterilization device based on the determination result.

[0014] In a second aspect, the present invention provides a water purifier, the water purifier including the control method for the water purifier described above.

[0015] By adopting the above technical solution, the electrolysis intensity of the electrolysis module can be selectively adjusted according to the concentration C of the bactericidal substance in the water purification pipeline and the preset concentration C0. On the one hand, it can avoid the concentration of bactericidal substance in the water purification pipeline being too low due to the electrolysis intensity of the electrolysis module being too low, thereby ensuring effective sterilization of the water purification pipeline. On the other hand, it can also avoid the serious scaling inside the sterilization device due to the electrolysis intensity of the electrolysis module being too high, and at the same time, it can avoid wasting energy and greatly improve the user experience.

[0016] Furthermore, compared to directly comparing the concentration C of the bactericidal substance with the preset concentration C0, by first calculating the difference between the concentration C of the bactericidal substance and the preset concentration C0, and then comparing the difference with the preset value, misjudgments caused by detection errors in the concentration C of the bactericidal substance can be avoided. This makes the adjustment of the electrolysis module more timely and further improves the user experience.

[0017] Furthermore, when △>A1, it indicates that the concentration of the bactericidal substance exceeds the preset concentration, that is, the concentration of the bactericidal substance in the water is too high. In this case, the electrolysis intensity of the electrolysis module needs to be reduced to prevent scaling of the electrolysis module due to excessive electrolysis intensity. At the same time, it can further reduce energy waste and further improve the user experience.

[0018] Furthermore, when A2≤△≤A1, it means that the difference between the concentration of the bactericidal substance and the preset concentration is within the preset range. In other words, the concentration of the bactericidal substance at this time is just enough to effectively sterilize the water purification circuit. At this time, without adjusting the electrolysis intensity of the electrolysis module, the sterilization effect can be guaranteed, and energy can be used rationally.

[0019] Furthermore, when △ < A2, it indicates that the concentration of the bactericidal substance is too low. Increasing the electrolysis intensity of the electrolysis module can increase the concentration of the bactericidal substance in the water, thereby avoiding the inability to effectively sterilize the water purification pipeline due to insufficient concentration of the bactericidal substance.

[0020] Furthermore, after the sterilization device is started, by alternating the operation of the first electrolysis component and the second electrolysis component, the operating time of the first electrolysis component and the second electrolysis component can be reduced, thereby reducing the heat generated by the first electrolysis component and the second electrolysis component, which in turn reduces the scaling of the first electrolysis component and the second electrolysis component, extends the service life of the sterilization device, and further improves the user experience.

[0021] Furthermore, compared to the method of activating the sterilization device by having the user operate the sterilization button on the water purifier, by obtaining the running time of the water purifier since the last sterilization mode, and activating the sterilization device to sterilize the water purifier when the running time reaches the user-set time, the water purifier can be automatically sterilized more promptly and conveniently, which helps to improve the user's drinking water health and further enhances the user experience.

[0022] Furthermore, if the judgment result is "yes", it means that a long time has passed since the water purifier last executed the sterilization mode. At this time, the cleanliness of the water purifier is not good. In this case, further obtaining the current time and judging whether the current time is within the set time range can avoid sterilizing the water purifier during peak water usage periods, which would affect the user's normal water use and further improve the user experience.

[0023] Furthermore, by judging whether the concentration of the bactericidal substance exceeds the preset concentration for a longer period of time, it is possible to determine whether the bactericidal substance in the water can be maintained within the effective bactericidal concentration range for a long time. Based on the judgment result, the sterilization device can be selectively shut down in a timely manner to end the sterilization process, thereby further reducing energy waste and reducing scaling of the electrolysis module.

[0024] Furthermore, the water purifier provided by the present invention, based on the above-described technical solution, incorporates the control method for water purifiers described above, and thus possesses the beneficial effects of the control method for water purifiers described above. Compared with the water purifier before the improvement, the water purifier of the present invention has better sterilization effect, lower energy waste, and longer service life of sterilization device. At the same time, the water quality of the water purifier is better, and the user experience is also better. Attached Figure Description

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a connection diagram of a first embodiment of the water purification circuit of the present invention;

[0027] Figure 2 This is a connection diagram of a second embodiment of the water purification circuit of the present invention;

[0028] Figure 3 This is a connection diagram of a third embodiment of the water purification circuit of the present invention;

[0029] Figure 4 This is a connection diagram of Embodiment 4 of the water purification circuit of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a first embodiment of the sterilization device of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the sterilization device of the present invention;

[0032] Figure 7 This is a flowchart of the control method for a water purifier according to the present invention;

[0033] Figure 8 This is a flowchart of an embodiment of the control method for a water purifier according to the present invention.

[0034] List of reference numerals in the attached diagram:

[0035] 11. Inlet pipe; 12. Inlet solenoid valve; 13. Raw water tank; 131. Raw water chamber; 132. Wastewater chamber; 2. Pretreatment filter element; 3. Booster pump; 4. Sterilization device; 41. Shell; 410. Electrolysis chamber; 411. Inlet; 412. Outlet; 4201. Cathode plate; 4202. Anode plate; 4211. First cathode electrode; 4212. First anode electrode; 422. 4221. Second cathode electrode; 4222. Second anode electrode; 4 23. Proton exchange membrane; 4241. Negative electrode post; 4242. Positive electrode post; 43. Water distribution plate; 431. Water distribution hole; 51. Reverse osmosis membrane filter element; 52. Composite filter element; 531. Wastewater pipe; 532. Wastewater proportional valve; 6. Return pipe; 61. Circulation pump; 62. Check valve; 7. Reversing valve; 71. First interface; 72. Second interface; 73. Third interface; 8. High-pressure switch; 91. Faucet; 92. Pure water tank; 921. Cold tank; 922. Hot tank. Detailed Implementation

[0036] 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 present invention and are not intended to limit the scope of protection of the present invention.

[0037] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," "outer," "top," and "bottom," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In view of the problem mentioned in the background art that existing water purifiers cannot effectively sterilize the water purification pipes, resulting in a poor user experience, the present invention provides a water purifier, which includes a shell and a water purification pipe disposed inside the shell. The shell is provided with a water inlet component and a water outlet component, and the two ends of the water purification pipe are respectively connected to the water inlet component and the water outlet component.

[0040] Specifically, please refer to Figures 1 to 4 , Figure 1 This is a connection diagram of a first embodiment of the water purification circuit of the present invention; Figure 2 This is a connection diagram of a second embodiment of the water purification circuit of the present invention; Figure 3 This is a connection diagram of a third embodiment of the water purification circuit of the present invention; Figure 4 This is a connection diagram of Embodiment 4 of the water purification circuit of the present invention.

[0041] like Figure 1 and Figure 4 As shown, the water purification pipeline of the present invention includes a filter and a sterilization device 4 arranged in series. The sterilization device 4 includes a housing 41 and an electrolysis module. The housing 41 has an electrolysis chamber 410. The two ends of the housing 41 are respectively provided with an inlet 411 and an outlet 412 communicating with the electrolysis chamber 410. The electrolysis module is installed in the electrolysis chamber 410 and is configured to electrolyze sterilizing substances. The sterilizing substances flow out from the outlet 412 to sterilize the water purification pipeline.

[0042] With this setup, the electrolysis module can electrolyze bactericidal substances, oxidizing and decomposing bacteria and organic matter in the water flow. This sterilizes the water purifier's pipes, preventing bacterial growth from affecting the user's drinking water health and ensuring the user's drinking water safety.

[0043] It should be noted that, in practical applications, those skilled in the art can configure the filter as only a reverse osmosis membrane filter element 51, or the filter can be configured as a pretreatment filter element 2 and a reverse osmosis membrane filter element 51, wherein the water outlet of the pretreatment filter element 2 is connected to the water inlet of the reverse osmosis membrane filter element 51. Alternatively, the filter can be configured as a pretreatment filter element 2, a reverse osmosis membrane filter element 51, and a post-filter element, wherein the water outlet of the pretreatment filter element 2 is connected to the water inlet of the reverse osmosis membrane filter element 51, and the water inlet of the post-filter element is connected to the purified water end of the reverse osmosis membrane filter element 51, etc. Such adjustments and changes to the specific configuration of the filter do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0044] It should also be noted that, in practical applications, those skilled in the art can configure the water inlet component as a water inlet pipe 11 and a water inlet solenoid valve 12 installed on the water inlet pipe 11, or the water inlet pipe 11 can be configured as a raw water tank 13, etc. Such adjustments and changes to the specific configuration type of the water inlet component do not deviate from the principle and scope of the present invention and should all be included within the protection scope of the present invention.

[0045] It should also be noted that, in practical applications, those skilled in the art can set the water outlet component as a faucet 91 or a water outlet, or it can be set as a water purification tank, etc. Such adjustments and changes to the specific setting type of the water outlet component do not deviate from the principle and scope of the present invention and should all be included within the protection scope of the present invention.

[0046] The following four embodiments illustrate in detail the specific implementation of the water purification circuit of the water purifier of the present invention.

[0047] Example 1:

[0048] like Figure 1 As shown, the water purification circuit of the present invention includes an inlet pipe 11, a pretreatment filter element 2, a booster pump 3, a sterilization device 4, a reverse osmosis membrane filter element 51, and a faucet 91 connected in sequence. An inlet solenoid valve 12 is provided on the inlet pipe 11. One end of the inlet pipe 11 is connected to the inlet port of the water purifier, and the other end of the inlet pipe 11 is connected to the pretreatment filter element 2. The water purification circuit also includes a wastewater pipe 531 and a wastewater solenoid valve 532 provided on the wastewater pipe 531. One end of the wastewater pipe 531 is connected to the wastewater outlet of the reverse osmosis membrane filter element 51, and the other end of the wastewater pipe 531 is connected to the wastewater port of the water purifier.

[0049] With this setup, the sterilization device 4 is placed between the pretreatment filter cartridge 2 and the reverse osmosis membrane filter cartridge 51. On the one hand, this allows the water filtered by the pretreatment filter cartridge 2 to flow into the sterilization device 4 and the reverse osmosis membrane filter cartridge 51, thereby preventing impurities in the water from clogging the sterilization device 4 and the reverse osmosis membrane filter cartridge 51 and extending their service life. On the other hand, during sterilization, the sterilizing substances output by the sterilization device 4 can enter the reverse osmosis membrane filter cartridge 51 to sterilize it, preventing clogging caused by bacterial growth in the reverse osmosis membrane filter cartridge 51 and further improving the user experience.

[0050] It should be noted that in practical applications, the sterilization device 4 is not limited to being placed between the booster pump 3 and the reverse osmosis membrane filter element 51. For example, the sterilization device 4 can also be placed upstream of the booster pump 3, etc. Such adjustments and changes to the specific placement of the sterilization device 4 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0051] Preferably, the sterilization device 4 is placed between the booster pump 3 and the reverse osmosis membrane filter element 51.

[0052] Preferably, such as Figure 1As shown, the water purification circuit of the present invention also includes a high-pressure switch 8. The high-pressure switch 8 is set in the flow path between the water purification end of the reverse osmosis membrane filter element 51 and the faucet 91. The high-pressure switch 8 is communicatively connected to the booster pump 3 and the inlet solenoid valve 12.

[0053] By setting a high-pressure switch 8, when the user takes water, the high-pressure switch 8 closes when it detects a decrease in pressure in the pipeline and transmits this signal to the booster pump 3 and the inlet solenoid valve 12. The booster pump 3 and the inlet solenoid valve 12 start and begin producing water. When the water taking ends, the high-pressure switch 8 opens when it detects an increase in pressure in the pipeline and transmits this signal to the booster pump 3. The booster pump 3 stops working, and the inlet solenoid valve 12 closes, meaning the water purifier stops producing water. This achieves intelligent water taking by the water purifier and further enhances the user experience.

[0054] Preferably, the water purifier also includes an electronic control board, which is communicatively connected to the inlet solenoid valve 12, the wastewater proportional valve 532, the booster pump 3, and the high-pressure switch 8.

[0055] When the water purifier is in water production mode, the faucet 91 is opened, the inlet solenoid valve 12 and the wastewater proportioning valve 532 are opened, the sterilization device 4 is not working, the water entering the inlet pipe 11 through the inlet port enters the pretreatment filter 2, the water filtered by the pretreatment filter 2 is then pumped by the booster pump 3 into the sterilization device 4 and the reverse osmosis membrane filter 51 in sequence, the pure water filtered by the reverse osmosis membrane filter 51 flows out from the faucet 91 through the high-pressure switch 8, and the wastewater produced by filtration flows out from the wastewater pipe 531 through the wastewater proportioning valve 532.

[0056] When the water purifier is in sterilization mode, the faucet 91 is closed, the inlet solenoid valve 12 and the booster pump 3 are started, and then the wastewater proportional valve 532 and the sterilization device 4 are started. The electrolysis module electrolyzes the sterilizing substance, and the water containing the sterilizing substance flows into the reverse osmosis membrane filter element 51 and then flows out through the wastewater proportional valve 532 to achieve sterilization. After sterilization is completed, the wastewater proportional valve 532, the inlet solenoid valve 12 and the sterilization device 4 are closed.

[0057] Example 2:

[0058] like Figure 2As shown, the water purification circuit of the present invention includes an inlet pipe 11, a sterilization device 4, a reversing valve 7, a pretreatment filter element 2, a booster pump 3, a reverse osmosis membrane filter element 51, and a faucet 91 connected in sequence. An inlet solenoid valve 12 is provided on the inlet pipe 11. One end of the inlet pipe 11 is connected to the inlet port of the water purifier, and the other end of the inlet pipe 11 is connected to the pretreatment filter element 2. The water purification circuit also includes a wastewater pipe 531 and a wastewater solenoid valve 532 provided on the wastewater pipe 531. One end of the wastewater pipe 531 is connected to the wastewater outlet of the reverse osmosis membrane filter element 51, and the other end of the wastewater pipe 531 is connected to the wastewater port of the water purifier. The reversing valve 7 includes a first interface 71, a second interface 72, and a third interface 73. The first interface 71 is connected to the sterilization device 4, the second interface 72 is connected to the inlet end of the pretreatment filter element 2, and the third interface 73 is connected to the purified water end of the reverse osmosis membrane filter element 51 through a return pipe.

[0059] Preferably, such as Figure 1 As shown, the water purification circuit of the present invention also includes a high-pressure switch 8. The high-pressure switch 8 is set in the flow path between the water purification end of the reverse osmosis membrane filter element 51 and the faucet 91. The high-pressure switch 8 is communicatively connected to the booster pump 3 and the inlet solenoid valve 12.

[0060] By setting a high-pressure switch 8, when the user takes water, the high-pressure switch 8 closes when it detects a decrease in pressure in the pipeline and transmits this signal to the booster pump 3 and the inlet solenoid valve 12. The booster pump 3 and the inlet solenoid valve 12 start and begin producing water. When the water taking ends, the high-pressure switch 8 opens when it detects an increase in pressure in the pipeline and transmits this signal to the booster pump 3. The booster pump 3 stops working, and the inlet solenoid valve 12 closes, meaning the water purifier stops producing water. This achieves intelligent water taking by the water purifier and further enhances the user experience.

[0061] When the water purifier is in water production mode, the faucet 91 is opened, the inlet solenoid valve 12 and the wastewater proportioning valve 532 are opened, the sterilization device 4 is not working, and the water entering the inlet pipe 11 through the inlet port enters the sterilization device 4 and the pretreatment filter 2 in sequence. The water filtered by the pretreatment filter 2 is then pumped into the reverse osmosis membrane filter 51 by the booster pump 3 in sequence. The pure water filtered by the reverse osmosis membrane filter 51 flows out from the faucet 91 through the high-pressure switch 8, and the wastewater produced by filtration flows out from the wastewater pipe 531 through the wastewater proportioning valve 532.

[0062] When the water purifier is in sterilization mode, the faucet 91 is closed, the high-pressure switch 8 is activated, the wastewater proportional valve 532 and sterilization device 4 are opened with a delay, the first port 71 and the second port 72 of the reversing valve 7 are connected, and the rinsing is performed for a first set time. Then, the reversing valve 7 is switched to connect the first port 71 and the third port 73, the inlet solenoid valve 12, the wastewater proportional valve 532 and the sterilization device 4 are closed, the booster pump 3 is turned on, and the booster pump 3 delivers the residual water in the water circuit from the inlet end of the reverse osmosis membrane filter element 51 to the pretreatment filter element 2, and then delivers it to the purified water end of the reverse osmosis membrane filter element 51 through the return pipe to form a circulation, which flushes and sterilizes the pipeline. After the second set time of rinsing, the reversing valve 7 is switched to connect the first port 71 and the second port 72.

[0063] Example 3:

[0064] like Figure 3 As shown, the water purification circuit of the present invention includes a raw water tank 13, a pretreatment filter element 2, a booster pump 3, a composite filter element 52, a sterilization device 4, and a pure water tank 92 connected in sequence. The composite filter element 52 is a composite filter element of a reverse osmosis membrane filter element and a post-filter element. The raw water tank 13 is provided with a raw water chamber 131 and a wastewater chamber 132. The raw water chamber 131 of the raw water tank 13 is connected to the pretreatment filter element 2. The water purification circuit also includes a wastewater pipe 531 and a wastewater solenoid valve 532 installed on the wastewater pipe 531. One end of the wastewater pipe 531 is connected to the wastewater outlet of the composite filter element (the wastewater outlet of the reverse osmosis membrane filter element), and the other end of the wastewater pipe 531 is connected to the wastewater chamber 132 of the raw water tank 13.

[0065] like Figure 3 As shown, the purified water circuit also includes a return pipe 6 and a circulation pump 61 installed on the return pipe 6. One end of the return pipe 6 is connected to the pure water tank 92, and the other end of the return pipe 6 is connected to the original water chamber 131. The circulation pump 61 is used to pump the water in the pure water tank 92 back to the original water chamber 131.

[0066] Preferably, a water level detection component (not shown in the figure) is also provided inside the pure water tank 92, which is used to detect the water level inside the pure water tank 92.

[0067] Preferably, such as Figure 3 As shown, the water purification circuit of the present invention also includes a cold tank 921 and a hot tank 922, both of which are connected to the pure water tank 92.

[0068] When the water purifier is in water production mode, the sterilization device 4 is not working. The tap water in the raw water chamber 131 is filtered by the pretreatment filter element 2 and then pumped into the reverse osmosis membrane filter element of the composite filter element 52 by the booster pump 3. The pure water after being filtered by the reverse osmosis membrane filter element enters the pure water tank 92 through the sterilization device 4. The wastewater generated by filtration flows out from the wastewater pipe 531 through the wastewater proportioning valve 532. When the water level detection component detects that the water level in the pure water tank 92 has reached the first preset water level, the booster pump 3 is turned off and the water production ends.

[0069] When the water purifier is in sterilization mode, the water level in the pure water tank 92 is first detected by the water level detection component. If the water level in the pure water tank 92 is higher than the second preset water level (where the second preset water level is lower than the first preset water level), the circulation pump 61 is started to drain the water in the pure water tank 92 into the raw water chamber 131 of the raw water tank 13, until the water level in the pure water tank 92 is lower than the second preset water level. When the water level detection component detects that the water level in the pure water tank 92 is lower than the second preset water level, the sterilization device 4 and the booster pump 3 are started, and the water in the raw water chamber... After being filtered by the pretreatment filter, the water is pumped by the booster pump 3 into the composite filter 52, then passes through the sterilization device 4 to release sterilizing substances, and then flows into the pure water tank 92. When the water level detection component detects that the water level in the pure water tank 92 has reached the first preset water level, the booster pump 3 and the sterilization device 4 are turned off. After a set standby time, the circulation pump 61 is started to pump the water in the pure water tank 92 back into the original water tank 13. After a set standby time, the water purifier is switched to the water production mode. When the water level in the pure water tank 92 reaches the first preset water level, the water purifier stops.

[0070] Example 4:

[0071] like Figure 4 As shown, the water purification circuit of the present invention includes an inlet component, a booster pump 3, a pretreatment filter element 2, a composite filter element 52, a sterilization device 4, and a pure water tank 92 connected in sequence. The composite filter element 52 is a composite filter element of a reverse osmosis membrane filter element and a post-filter element. The water purification circuit also includes a wastewater pipe 531 and a wastewater solenoid valve 532 installed on the wastewater pipe 531. One end of the wastewater pipe 531 is connected to the wastewater port of the reverse osmosis membrane filter element, and the other end of the wastewater pipe 531 is connected to the wastewater port of the water purifier.

[0072] The water purification circuit in this embodiment also includes a return pipe 6, a circulation pump 61 and a one-way valve 62 installed on the return pipe 6. One end of the return pipe 6 is connected to the water inlet of the pretreatment filter element 2, and the other end of the return pipe 6 is connected to the pure water tank 92. The circulation pump 61 can pump water from the pure water tank 92 into the pretreatment filter element 2, and the one-way valve 62 can prevent the booster pump 3 from delivering water into the return pipe 6.

[0073] Preferably, the pure water tank 92 in this embodiment is further provided with a water level detection component (not shown in the figure), which is used to detect the water level in the pure water tank 92.

[0074] Preferably, the water purification circuit of this embodiment also includes a cold tank 921 and a hot tank 922, both of which are connected to the pure water tank 92.

[0075] When the water purifier is in water production mode, the sterilization device 4 does not work. The booster pump 3 delivers the tap water in the inlet pipe 11 to the pretreatment filter 2 through the inlet solenoid valve 12. The water filtered by the pretreatment filter 2 is then delivered to the composite filter 52, which is composed of the reverse osmosis membrane filter and the post-filter. The pure water filtered by the reverse osmosis membrane filter 51 is then filtered by the post-filter to improve its taste before flowing into the pure water tank 92. The wastewater produced by filtration is discharged from the wastewater pipe 531 through the wastewater proportioning valve 532. When the water level detection component in the pure water tank 92 detects that the water level in the pure water tank 92 has reached the first preset water level, the booster pump 3 and the inlet solenoid valve 12 are turned off to stop water production.

[0076] When the water purifier is in sterilization mode, the water level in the pure water tank 92 is first detected by the water level detection component. If the water level in the pure water tank 92 is higher than the second preset water level, the water is manually or automatically drained to the second preset water level. When the water level detection component detects that the water level in the pure water tank 92 is lower than the second preset water level, the inlet solenoid valve 12, the booster pump 3, and the sterilization device 4 are activated until the water level in the pure water tank 92 reaches the first preset water level. Then, the inlet solenoid valve 12, the booster pump 3, and the sterilization device 4 are closed, and the water is left to stand for a third set time. Then, the circulation pump 61 is activated to sequentially transport the water in the pure water tank 92 to the pretreatment filter element 2 and the composite filter element 52. Finally, the water flows out from the wastewater pipe 531 through the wastewater proportioning valve 532. When the water level detection component detects that the water level in the pure water tank 92 has reached the second preset water level, the water production mode is activated until the water level in the pure water tank 92 reaches the first preset water level.

[0077] It should be noted that although the present invention is described using the above four embodiments to illustrate the water purification circuit of the present invention, this is not limiting. The control method of the present invention is also applicable to any other possible water purification circuit, etc. Such adjustments and changes to the specific configuration of the water purification circuit do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0078] It should also be noted that the present invention does not impose any restrictions on the specific structural form of the electrolysis module, as long as it can be installed in the housing 41 and can electrolyze bactericidal substances when energized and allow the bactericidal substances to flow out from the outlet 412. Such adjustments and changes to the specific structural form of the electrolysis module do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0079] See next Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of Embodiment 1 of the sterilization device of the present invention. Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the sterilization device of the present invention.

[0080] The following is combined with Figure 5 and Figure 6 The specific embodiments of the electrolysis module of the present invention will be described in detail below.

[0081] Example 1:

[0082] like Figure 5 As shown, the electrolysis module of the present invention includes a cathode plate 4201, a proton exchange membrane 423 and an anode plate 4202 arranged sequentially along the water flow direction. The edge of the cathode plate 4201 is connected to the inner wall of the housing 41 through a first elastic member, and the edge of the anode plate 4202 is connected to the inner wall of the housing 41 through a second elastic member. A first water passage hole is provided on the cathode electrode, a second water passage hole is provided on the proton exchange membrane 423, and a third water passage hole (not shown in the figure) is provided on the anode electrode.

[0083] It should be noted that, in practical applications, those skilled in the art can set the anode plate 4202 as a diamond electrode, or it can set the anode plate 4202 as a stainless steel electrode, etc. Such adjustments and changes to the specific setting type of the anode plate 4202 do not deviate from the principle and scope of the present invention, and should all be included within the protection scope of the present invention.

[0084] Preferably, the anode plate 4202 of the present invention is a diamond electrode.

[0085] Preferably, such as Figure 5 As shown, an elastic element is also provided inside the housing 41. One end of the elastic element abuts against the cathode plate 4201, and the other end of the elastic element abuts against the inner wall of the housing 41. The elastic element can keep the cathode plate 4201 in a state of micro-vibration, which can reduce the deposition of scale on the cathode plate 4201.

[0086] Preferably, such as Figure 5 As shown, a water distribution plate 43 is also provided inside the housing 41. The water distribution plate 43 is provided with multiple water distribution holes 431. Water entering the housing 41 from the water inlet 411 is diverted into multiple water distribution holes 431 under the action of the water distribution plate 43, thereby improving the electrolysis efficiency of the electrolysis module.

[0087] Example 2:

[0088] like Figure 6As shown, the electrolysis module of the present invention includes a first electrolysis component and a second electrolysis component. The first electrolysis component includes a first cathode electrode 4211 and a first anode electrode 4212 arranged in sequence. The second electrolysis component includes a second cathode electrode 4221 and a second anode electrode 4222 arranged in sequence. The electrolysis module also includes a proton exchange membrane 423. The first cathode electrode 4211 and the first anode electrode 4212 are arranged opposite to each other and are respectively located on both sides of the proton exchange membrane 423. The second cathode electrode 4221 and the second anode electrode 4222 are arranged opposite to each other and are respectively located on both sides of the proton exchange membrane 423.

[0089] The first cathode electrode 4211 and the second cathode electrode 4221 can be selectively electrically connected to the cathode lead, the first anode electrode 4212 and the second cathode electrode 4221 can be selectively electrically connected to the anode lead, the cathode lead is electrically connected to the negative terminal 4241, and the anode electrode is electrically connected to the positive terminal 4242.

[0090] It should be noted that, in practical applications, those skilled in the art can set the number of the first cathode electrode 4211 and the first anode electrode 4212 to one, or the number of the first cathode electrode 4211 and the first anode electrode 4212 to two, or the number of the first cathode electrode 4211 and the first anode electrode 4212 to multiple, etc. Such adjustments and changes to the specific number of the first cathode electrode 4211 and the first anode electrode 4212 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0091] Preferably, such as Figure 6 As shown, there are two first cathode electrodes 4211 and two first anode electrodes 4212.

[0092] It should be noted that, in practical applications, those skilled in the art can set the number of the second cathode electrode 4221 and the second anode electrode 4222 to one, or the number of the second cathode electrode 4221 and the second anode electrode 4222 to two, or the number of the second cathode electrode 4221 and the second anode electrode 4222 to multiple, etc. Such adjustments and changes to the specific number of the second cathode electrode 4221 and the second anode electrode 4222 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0093] Preferably, such as Figure 6 As shown, there are two of each of the second cathode electrode 4221 and the second anode electrode 4222.

[0094] By setting the number of the first cathode electrode 4211, the first anode electrode 4212, the second cathode electrode 4221, and the second anode electrode 4222 to two, it is possible to avoid the electrolysis module failing to work properly due to a failure of one of the electrodes.

[0095] It should be noted that the structure of the shell 41 in Embodiment 2 and the connection structure between the electrolysis module and the shell 41 are the same as those in Embodiment 1, and will not be described again here.

[0096] It should also be noted that although this application describes the specific configuration of the electrolysis module using the above two embodiments, this is not restrictive. As long as it can electrolyze bactericidal substances and sterilize the purified water circuit, etc., such adjustments and changes to the specific structural form of the electrolysis module do not deviate from the principles and scope of this invention and should be included within the protection scope of this invention.

[0097] The control method of the present invention will now be described using the structure of the electrolysis module described in Example 2.

[0098] The water purifier of the present invention includes a water purification pipeline, the water purification pipeline includes a filter and a sterilization device 4 arranged in series, the sterilization device 4 includes a housing 41 and an electrolysis module disposed in the housing 41, the electrolysis module is configured to electrolyze a sterilizing substance to sterilize the water purification pipeline.

[0099] See next Figure 7 , Figure 7 This is a flowchart of the control method for a water purifier according to the present invention.

[0100] like Figure 7 As shown, after activating the sterilization device 4, the control method of the present invention includes the following steps:

[0101] S100: Real-time acquisition of the concentration C of the bactericidal substance inside the shell 41;

[0102] S200: Obtain the preset concentration C0;

[0103] S300: Selectively adjust the electrolysis intensity of the electrolysis module according to the concentration C of the bactericidal substance and the preset concentration C0.

[0104] With this setting, the electrolysis intensity of the electrolysis module can be selectively adjusted according to the concentration C of the bactericidal substance in the water purification pipeline and the preset concentration C0. On the one hand, it can avoid the concentration of bactericidal substance in the water purification pipeline being too low due to the electrolysis intensity of the electrolysis module being too low, thus ensuring effective sterilization of the water purification pipeline. On the other hand, it can also avoid the serious scaling inside the sterilization device 4 due to the electrolysis intensity of the electrolysis module being too high, and at the same time, it can avoid wasting energy, greatly improving the user experience.

[0105] It should be noted that the bactericidal substances electrolyzed by the electrolysis module are ozone, hydroxyl groups, and other substances with bactericidal effects. In practical applications, those skilled in the art can set the bactericidal substance to ozone according to actual needs, and adjust the electrolysis intensity of the electrolysis module according to the concentration of ozone and the preset concentration. Alternatively, the bactericidal substance can be set to hydroxyl groups and the electrolysis intensity of the electrolysis module can be adjusted according to the concentration of hydroxyl groups and the corresponding preset concentration. Or, the bactericidal substance can be set to ozone, hydroxyl groups, and other substances, and the electrolysis intensity of the electrolysis module can be adjusted according to the concentration of ozone, hydroxyl groups, and other substances and the corresponding preset concentration. Such adjustments and changes to the specific setting type of the bactericidal substance do not deviate from the principles and scope of this invention and should all be included within the protection scope of this invention.

[0106] Preferably, the bactericidal substance is ozone, that is, the electrolysis intensity of the electrolysis module is selectively adjusted according to the ozone concentration and the preset ozone concentration.

[0107] It should be noted that, in practical applications, those skilled in the art can obtain the concentration of the bactericidal substance at the outlet 412 at set intervals to achieve real-time acquisition of the concentration of the bactericidal substance at the outlet 412, or they can continuously obtain the concentration of the bactericidal substance at the outlet 412 to achieve real-time acquisition of the concentration of the bactericidal substance at the outlet 412, and so on. Such adjustments and changes to the specific method of obtaining the concentration of the bactericidal substance at the outlet 412 in real time do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0108] Preferably, the concentration of the bactericidal substance at the outlet 412 is obtained at a set time interval. For example, the concentration of the bactericidal substance at the outlet 412 is obtained at a 5-second interval.

[0109] It should be noted that in practical applications, those skilled in the art can directly collect the water to be tested and test the concentration of the bactericidal substance in the water, or they can install a concentration detection component on the water purification pipeline and obtain the concentration of the bactericidal substance by the value displayed by the concentration detection component, etc. Such adjustments and changes to the specific testing method for the concentration of the bactericidal substance do not deviate from the principle and scope of the present invention and should all be included within the protection scope of the present invention.

[0110] Preferably, the water purification pipeline of the present invention further includes a concentration detection component (not shown in the figure), and the concentration of the bactericidal substance is obtained by the value displayed by the concentration detection component.

[0111] It should be noted that, in practical applications, those skilled in the art can set the concentration detection component as a spectrophotometer, or set the concentration detection component in any other possible form, etc. Such adjustments and changes to the specific setting type of the concentration detection component do not deviate from the principles and scope of the present invention, and should all be included within the protection scope of the present invention.

[0112] Preferably, the concentration detection component of the present invention is a spectrophotometer.

[0113] It should be noted that, in practical applications, those skilled in the art can obtain the preset concentration by the value entered by the user on the control panel of the water purifier, or by the value entered by the user on a mobile device connected to the water purifier, or by having the preset concentration directly embedded into the controller of the water purifier at the factory, etc. Such adjustments and changes to the specific method of obtaining the preset concentration do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0114] Preferably, the preset concentration is obtained by the value entered by the user on the control panel of the water purifier.

[0115] With this setting, the specific value of the preset concentration can be adjusted according to the local water quality, thereby adjusting the concentration range of the bactericidal substance according to the water quality. On the one hand, it can avoid the bactericidal substance concentration being too low, resulting in insufficient sterilization; on the other hand, it can avoid the bactericidal substance concentration being too high, resulting in energy waste. At the same time, it can also reduce scaling of the sterilization device 4.

[0116] It should be noted that the concentrations of the above-mentioned bactericidal substances were all measured under the condition of a set water flow rate.

[0117] It should also be noted that, in practical applications, those skilled in the art can directly compare the concentration C of the bactericidal substance with the preset concentration C0, and selectively adjust the electrolysis intensity of the electrolysis module based on the comparison result. Alternatively, they can first calculate the difference between the concentration C of the bactericidal substance and the preset concentration C0, and then compare the difference with the preset value. Based on the comparison result, they can selectively adjust the electrolysis intensity of the electrolysis module. Or, they can first calculate the ratio between the concentration C of the bactericidal substance and the preset concentration C0, and then compare the ratio with the preset value. Based on the comparison result, they can selectively adjust the electrolysis intensity of the electrolysis module, and so on. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0118] See next Figure 8 , Figure 8 This is a flowchart of an embodiment of the user water purifier control method of the present invention.

[0119] Preferably, such as Figure 8 As shown, the step of "selectively adjusting the electrolysis intensity of the electrolysis module according to the concentration C of the bactericidal substance and the preset concentration C0" specifically includes:

[0120] S310: Calculate the difference Δ = C - C0;

[0121] S320: Compare the difference Δ with the first preset value A1 and the second preset value A2 respectively;

[0122] S330: Based on the comparison results, selectively adjust the electrolysis intensity of the electrolysis module;

[0123] Where A1 > 0, A2 < 0.

[0124] Compared to directly comparing the concentration C of the bactericidal substance with the preset concentration C0, this setting avoids misjudgments caused by detection errors in the concentration C of the bactericidal substance by first calculating the difference between the concentration C and the preset concentration C0 and then comparing the difference with the preset value. This makes the adjustment of the electrolysis module more timely and further improves the user experience.

[0125] Preferably, such as Figure 8 As shown, the step of "selectively adjusting the electrolysis intensity of the electrolysis module based on the comparison results" specifically includes:

[0126] S331: If △>A1, then reduce the electrolysis intensity of the electrolysis module.

[0127] With this setting, when △>A1, it indicates that the concentration of the bactericidal substance exceeds the preset concentration, meaning that the concentration of the bactericidal substance in the water is too high. In this case, the electrolysis intensity of the electrolysis module needs to be reduced to prevent scaling of the electrolysis module due to excessive electrolysis intensity. At the same time, it can further reduce energy waste and improve the user experience.

[0128] Preferably, such as Figure 8 As shown, the step of "selectively adjusting the electrolysis intensity of the electrolysis module based on the comparison results" specifically includes:

[0129] S332: If A2≤△≤A1, then the electrolysis intensity of the electrolysis module is not adjusted.

[0130] With this setting, when A2≤△≤A1, it means that the difference between the concentration of the bactericidal substance and the preset concentration is within the preset range. In other words, the concentration of the bactericidal substance at this time is just enough to effectively sterilize the water purification circuit. At this time, without adjusting the electrolysis intensity of the electrolysis module, the sterilization effect can be guaranteed, and energy can be used rationally.

[0131] Preferably, such as Figure 8 As shown, the step of "selectively adjusting the electrolysis intensity of the electrolysis module based on the comparison results" specifically includes:

[0132] S333: If △ < A2, then increase the electrolysis intensity of the electrolysis module.

[0133] With this setting, when △ < A2, it indicates that the concentration of the bactericidal substance is too low. Increasing the electrolysis intensity of the electrolysis module can increase the concentration of the bactericidal substance in the water, thereby avoiding the inability to effectively sterilize the water purification pipeline due to insufficient concentration of the bactericidal substance.

[0134] It should be noted that, in practical applications, those skilled in the art can adjust the electrolytic intensity of the electrolytic module by adjusting the current of the electrolytic module, or by adjusting the voltage of the electrolytic module, or by simultaneously adjusting both the current and voltage of the electrolytic module, etc. Such adjustments and changes to the specific method of adjusting the electrolytic intensity do not deviate from the principles and scope of this invention and should all be included within the protection scope of this invention.

[0135] Preferably, the step of "adjusting the electrolysis intensity of the electrolysis module" specifically includes:

[0136] Adjust the current and voltage of the electrolysis module to regulate the electrolysis intensity.

[0137] With this setup, since the resistance changes during electrolysis, it is impossible to quickly adjust the electrolysis intensity of the electrolysis module to the required value by adjusting the current or voltage alone. By simultaneously adjusting the current and voltage of the electrolysis module (that is, by adjusting the power of the electrolysis module), the electrolysis intensity can be quickly adjusted.

[0138] It should be noted that in practical applications, the user can activate the sterilization device 4 to sterilize the water purifier by operating the sterilization button on the water purifier. Alternatively, the user can obtain the running time of the water purifier since the last sterilization mode was executed, and activate the sterilization device 4 to sterilize the water purifier when the running time reaches the set time, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0139] Preferably, before activating the sterilization device 4, the control method of the present invention further includes:

[0140] Get the running time of the water purifier since the last sterilization mode was executed;

[0141] Determine if the runtime has reached the set duration;

[0142] Based on the judgment results, the sterilization device 4 is selectively activated.

[0143] With this setup, compared to the method of activating the sterilization device 4 by having the user operate the sterilization button on the water purifier, this method obtains the running time of the water purifier since the last sterilization mode execution. When the running time reaches the user-set time, the sterilization device 4 is activated to sterilize the water purifier, which enables more timely and convenient automatic sterilization of the water purifier. This helps improve the user's drinking water health and further enhances the user experience.

[0144] Preferably, the step of "selectively activating the sterilization device 4 based on the judgment result" specifically includes:

[0145] If the judgment result is "no", then the sterilization device 4 will not be activated.

[0146] With this setting, if the judgment result is "no", it means that the time since the water purifier last executed the sterilization mode is relatively short, and the cleanliness level of the water purifier is relatively high, so there is no need to start the sterilization device 4.

[0147] Preferably, the step of "selectively activating the sterilization device 4 based on the judgment result" specifically includes:

[0148] If the judgment result is "yes", then the current time is obtained.

[0149] Determine if the current time is within a set time range;

[0150] Based on the judgment results, the sterilization device 4 is selectively activated.

[0151] With this setting, if the judgment result is "yes", it means that a long time has passed since the water purifier last executed the sterilization mode. At this time, the cleanliness of the water purifier is not good. In this case, further obtaining the current time and judging whether the current time is within the set time range can avoid sterilizing the water purifier during peak water usage periods, which would affect the user's normal water use and further improve the user experience.

[0152] Preferably, the step of "selectively activating the sterilization device 4 based on the judgment result" specifically includes:

[0153] If the judgment result is "no", then the sterilization device 4 will be activated.

[0154] If the judgment result is "yes", then the sterilization device 4 will not be activated.

[0155] With this setting, if the judgment result is "no", it means that the current time is not within the set time range, that is, the current time is not the peak water usage period. At this time, the sterilization device 4 will be activated to sterilize the water purifier in a timely manner. If the judgment result is "yes", it means that the current time is within the set time range, that is, the current time is the peak water usage period. At this time, the sterilization device 4 will not be activated, which can avoid sterilization during the peak water usage period and affect the user's normal water use, further improving the user experience.

[0156] It should be noted that in practical applications, those skilled in the art can determine the specific value of the set duration based on experience or experimentation.

[0157] For example, the duration is set to 10 days.

[0158] It should be noted that, in practical applications, those skilled in the art can configure the electrolysis module as only one electrolysis component, or as two electrolysis components, or even as multiple electrolysis components, etc. Such adjustments and changes to the specific configuration type of the electrolysis module do not deviate from the principles and scope of the present invention and should all be included within the protection scope of the present invention.

[0159] Preferably, the electrolysis module of the present invention includes a first electrolysis component and a second electrolysis component. The first electrolysis component and the second electrolysis component include at least one set of cathode electrodes and anode electrodes arranged sequentially. The electrolysis module also includes a proton exchange membrane 423. The cathode electrodes and anode electrodes are arranged opposite to each other and are respectively located on both sides of the proton exchange membrane 423. After the sterilization device 4 is started, the control method of the present invention further includes:

[0160] The first and second electrolysis units operate alternately.

[0161] With this setup, after the sterilization device 4 is activated, the first electrolysis component and the second electrolysis component operate alternately, which reduces the operating time of the first electrolysis component and the second electrolysis component, thereby reducing the heat generated by the first electrolysis component and the second electrolysis component, and further reducing the scaling of the first electrolysis component and the second electrolysis component, extending the service life of the sterilization device 4, and further improving the user experience.

[0162] It should be noted that in practical applications, the first electrolytic component can be started first, running for a first preset time, then shut down, and the second electrolytic component started, running for a second preset time, and so on, alternating between the first and second electrolytic components. Alternatively, the second electrolytic component can be started first, running for a second preset time, then shut down, and the first electrolytic component started, running for a first preset time, and so on, alternating between the first and second electrolytic components. Such adjustments and changes to the specific operating methods of alternating between the first and second electrolytic components do not deviate from the principles and scope of this invention and should all be included within the protection scope of this invention.

[0163] Preferably, the step of "alternating operation of the first electrolysis unit and the second electrolysis unit" specifically includes:

[0164] Start the first electrolysis unit and run it for a first preset time;

[0165] The first electrolysis unit is shut down, the second electrolysis unit is started, and the second electrolysis unit is run for a second preset time.

[0166] It should also be noted that in practical applications, the first preset duration can be set to be equal to the second preset duration, or the first preset duration and the second preset duration can be set to be unequal, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0167] Specifically, in practical applications, those skilled in the art can set the specific values ​​of the first preset duration and the second preset duration based on experience or experimentation.

[0168] For example, the first preset duration is 2 minutes and the second preset duration is 2 minutes.

[0169] The control method of the present invention further includes:

[0170] The duration for which the concentration of the bactericidal substance is greater than the preset concentration;

[0171] Determine if the duration exceeds the preset time;

[0172] Based on the judgment results, the sterilization device 4 is selectively shut down.

[0173] With this setting, it is possible to determine whether the concentration of the bactericidal substance is greater than the preset concentration for a longer period of time, thereby determining whether the bactericidal substance in the water can be maintained within the effective bactericidal concentration range for a long time. Based on the judgment result, the sterilization device 4 can be selectively shut down in a timely manner to end the sterilization process, which can further reduce energy waste and reduce scaling of the electrolysis module.

[0174] It should be noted that in practical applications, those skilled in the art can set the specific value of the preset time based on experience or experimentation.

[0175] For example, the preset time is 10 minutes.

[0176] Preferably, the step of "selectively shutting off the sterilization device 4 based on the judgment result" specifically includes:

[0177] If the judgment result is "yes", then the sterilization device 4 is turned off.

[0178] With this setting, if the judgment result is "yes", it means that the concentration of the bactericidal substance has been greater than the preset concentration for a longer period of time, which is sufficient to effectively sterilize the water circuit. At this time, timely shutdown of the sterilization device 4 can reduce energy waste and avoid the phenomenon of severe scaling caused by the long-term operation of the sterilization device 4, thus extending the service life of the sterilization device 4.

[0179] Preferably, the step of "selectively shutting off the sterilization device 4 based on the judgment result" specifically includes:

[0180] If the judgment result is "no", then the sterilization device 4 will not be turned off.

[0181] With this setting, if the judgment result is "no", it means that although the concentration of the bactericidal substance is greater than the preset concentration, the duration has not exceeded the preset time. That is, the water purification circuit cannot be effectively sterilized at this time. If the sterilization device 4 is not turned off, the bactericidal substance can be continuously released to avoid incomplete sterilization due to the short sterilization time.

[0182] The specific embodiments of the control method of the present invention are described in detail below with reference to the following situations.

[0183] Set C0 = 0.4ppm, A1 = 0.7ppm, and A2 = -0.1ppm.

[0184] Scenario 1:

[0185] If the concentration of the bactericidal substance at the outlet 412 is C = 1.2 ppm at a certain moment, then Δ = C - C0 = (1.2 - 0.4) ppm = 0.8 ppm > A1, and the electrolysis intensity of the electrolysis module will be reduced.

[0186] Scenario 2:

[0187] If at a certain moment the concentration of the bactericidal substance at outlet 412 is C = 0.1 ppm, and Δ = C - C0 = (0.1 - 0.4) ppm = -0.3 ppm < A2, then the electrolysis intensity of the electrolysis module will be increased.

[0188] Scenario 3:

[0189] If at a certain moment the concentration of the bactericidal substance at outlet 412 is C = 0.7 ppm, Δ = C - C0 = (0.7 - 0.4) ppm = 0.3 ppm, and A2 ≤ Δ ≤ A1, then the electrolysis intensity of the electrolysis module will not be adjusted.

[0190] Scenario 4:

[0191] If at a certain moment the concentration of the bactericidal substance at outlet 412 is detected to be C = 1.1 ppm, Δ = C - C0 = (1.1 - 0.4) ppm = 0.7 ppm, Δ = A1, then the electrolysis intensity of the electrolysis module will not be adjusted.

[0192] Scenario 5:

[0193] If at a certain moment the concentration of the bactericidal substance at outlet 412 is detected to be C = 0.3 ppm, Δ = C - C0 = (0.3 - 0.4) ppm = -0.1 ppm, Δ = A2, then the electrolysis intensity of the electrolysis module will not be adjusted.

[0194] In addition, the present invention also provides a water purifier including a controller configured to perform the control method for the water purifier described above.

[0195] It should be noted that the controller is connected to the concentration detection component to realize intelligent detection of the concentration of bactericidal substances at the water outlet 412. The controller is also connected to the sterilization device 4 to realize intelligent sterilization of the water purifier.

[0196] 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 for a water purifier, characterized in that, The water purifier includes a water purification pipeline, which includes a filter and a sterilization device arranged in series. The sterilization device includes a housing and an electrolysis module disposed within the housing. The housing has an inlet and an outlet. The electrolysis module is configured to electrolyze a sterilizing substance, which flows out from the outlet to sterilize the water purification pipeline. After activating the sterilization device, the control method includes the following steps: The concentration C of the bactericidal substance at the water outlet is obtained in real time; Obtain the preset concentration C0; Calculate the difference Δ = C - C0; The difference Δ is compared with the first preset value A1 and the second preset value A2 respectively; If Δ > A1, then the electrolysis intensity of the electrolysis module will be reduced; Alternatively, if A2≤△≤A1, then the electrolysis intensity of the electrolysis module is not adjusted; Alternatively, if △ < A2, then adjust to increase the electrolysis intensity of the electrolysis module; Where A1 > 0, A2 < 0; The duration for which the concentration C of the bactericidal substance is greater than a preset concentration; Determine whether the duration exceeds a preset time; Based on the judgment result, the sterilization device is selectively turned off.

2. The control method for a water purifier according to claim 1, characterized in that, The electrolysis module includes a first electrolysis component and a second electrolysis component. The first electrolysis component and / or the second electrolysis component includes at least one set of cathode electrodes and anode electrodes arranged sequentially. The electrolysis module also includes a proton exchange membrane. The cathode electrode and the anode electrode are arranged opposite to each other and are respectively located on both sides of the proton exchange membrane. After the sterilization device is started, the control method further includes: The first electrolysis unit and the second electrolysis unit are operated alternately.

3. The control method for a water purifier according to claim 1, characterized in that, Before activating the sterilization device, the control method further includes: Obtain the running time of the water purifier since the last execution of the sterilization mode; Determine whether the runtime has reached the set duration; Based on the judgment result, the sterilization device is selectively activated.

4. The control method for a water purifier according to claim 3, characterized in that, The step of "selectively activating the sterilization device based on the judgment result" specifically includes: If the judgment result is "yes", then the current time is obtained. Determine whether the current time is within the set time range; Based on the judgment result, the sterilization device is selectively activated.

5. A water purifier, characterized in that, The water purifier includes a controller configured to perform the control method for the water purifier as described in any one of claims 1 to 4.

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