Control method for water purification apparatus and water purification apparatus

Abstract

The present application relates to the technical field of household appliances, and particularly provides a control method for a water purification device and the water purification device, aiming to solve the problem that the filter of the existing water purification device cannot realize the washing of different wastewater fluxes according to the water quality, thereby resulting in poor user experience. The water purification device comprises a booster pump and a filter, the water outlet end of the booster pump is communicated with a water inlet, the water purification device further comprises a wastewater pipe and a wastewater adjusting member, the wastewater pipe is communicated with a wastewater outlet, and the wastewater adjusting member comprises at least two wastewater valves arranged on the wastewater pipe in sequence. After starting the water purification device, the control method comprises the following steps: acquiring actual water quality information of the water inlet of the filter; and selectively adjusting the gear of each wastewater valve according to the actual water quality information. The present application can adjust the gear of each wastewater valve according to the actual water quality information of the water inlet of the filter, realize the washing of wastewater valves with different fluxes, and improve the user experience.

Description

Technical Field

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

[0002] In existing water purification equipment, purified water flows out from the clean water outlet of the filter and wastewater flows out from the wastewater outlet of the filter during water production, in order to flush the filter and extend its service life.

[0003] Currently, water purification equipment on the market typically uses filters to filter water, while wastewater valves are installed on the wastewater pipeline to throttle the flow, thereby adjusting the pressure at the front end of the filter to achieve the purpose of water purification.

[0004] In existing technologies, wastewater valves typically have only one throttling orifice, resulting in a fixed wastewater ratio in the water purification equipment. In areas with poor water quality, this leads to incomplete rinsing due to insufficient flushing volume, affecting the filter's lifespan. Conversely, in areas with good water quality, excessive flushing volume results in water waste, impacting the user experience. While some products on the market add an adjustable wastewater ratio stepper motor to the filter to achieve different wastewater flow rates, stepper motors are prone to damage after prolonged use, and impurities in the wastewater can easily clog them, causing inaccurate wastewater volume and negatively impacting the user experience.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems to at least a certain extent, that is, to solve the problem that existing water purification equipment cannot achieve different wastewater flow rates for flushing according to the quality of the influent water, resulting in a poor user experience.

[0007] In a first aspect, the present invention provides a control method for a water purification device, the water purification device comprising a booster pump and a filter connected in sequence, the filter having an inlet, a clean water outlet, and a wastewater outlet, the outlet of the booster pump being connected to the inlet, the water purification device further comprising a wastewater pipe and a wastewater regulating component, the wastewater pipe being connected to the wastewater outlet, the wastewater regulating component comprising at least two wastewater valves sequentially disposed on the wastewater pipe, each wastewater valve having a flushing position and a fully open position, the flushing flow rate of the wastewater valves decreasing sequentially from the end closer to the wastewater outlet to the end farther from the wastewater outlet, and after starting the water purification device, the control method comprising: acquiring actual water quality information of the filter inlet; and selectively adjusting the position of each wastewater valve according to the actual water quality information.

[0008] In the preferred embodiment of the above control method, the wastewater regulating component includes a first wastewater valve and a second wastewater valve sequentially disposed on the wastewater pipe. One end of the first wastewater valve is connected to the wastewater outlet, and the other end of the first wastewater valve is connected to the second wastewater valve. The flushing flow rate of the first wastewater valve is greater than the flushing flow rate of the second wastewater valve. The step of "selectively adjusting the position of each wastewater valve according to the actual water quality information" specifically includes: selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the actual water quality information.

[0009] In the preferred embodiment of the above control method, the water quality information includes the TDS value. The step of "obtaining the actual water quality information of the filter inlet" specifically includes: obtaining the actual TDS value of the filter inlet; the step of "selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the actual water quality information" specifically includes: selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the actual TDS value.

[0010] In the preferred embodiment of the above control method, the step of "selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the actual TDS value" specifically includes: comparing the actual TDS value with a preset TDS value; and selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the comparison result.

[0011] In the preferred embodiment of the above control method, the step of "selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the comparison result" specifically includes: if the actual TDS value is greater than the preset TDS value, then the first wastewater valve is adjusted to the flushing position and the second wastewater valve is adjusted to the fully open position.

[0012] In the preferred embodiment of the above control method, the step of "selectively adjusting the positions of the first wastewater valve and the second wastewater valve according to the comparison result" specifically includes: if the actual TDS value is less than or equal to the preset TDS value, then the second wastewater valve is adjusted to the flushing position, and the first wastewater valve is adjusted to the fully open position or the flushing position; or the second wastewater valve is adjusted to the flushing position, and the position of the first wastewater valve is not adjusted.

[0013] In a preferred embodiment of the above control method, after adjusting the position of each wastewater valve, the control method further includes: obtaining the current position of each wastewater valve; adjusting the outlet flow rate of the booster pump according to the current position; or obtaining the current position of each wastewater valve; obtaining the clean water flow rate of the filter's clean water inlet; and adjusting the outlet flow rate of the booster pump according to the current position and the clean water flow rate.

[0014] In the preferred embodiment of the above control method, the step of "adjusting the outlet flow rate of the booster pump according to the current gear and the clean water flow rate" specifically includes: determining the target wastewater flow rate of the wastewater pipe according to the current gear; calculating the target outlet flow rate of the booster pump according to the target wastewater flow rate and the clean water flow rate; and adjusting the outlet flow rate of the booster pump to the target outlet flow rate.

[0015] In the preferred embodiment of the above control method, the step of "adjusting the water flow rate of the booster pump" specifically includes: adjusting the duty cycle of the booster pump to adjust the water flow rate of the booster pump.

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

[0017] By adopting the above technical solution, the present invention can determine the water quality of the incoming water based on the actual water quality information at the filter inlet, and adjust the setting of each wastewater valve according to the water quality, so that the wastewater flushing flow rate is adapted to the current incoming water quality. When the water purification equipment is used in areas with poor water quality, it can avoid the filter from being clogged due to insufficient flushing flow rate, thereby extending the service life of the filter. When the water purification equipment is used in areas with good water quality, it can avoid the problem of water waste caused by excessive flushing flow rate. Thus, it can adjust the flushing water volume according to the water quality at the inlet, realize the flushing of wastewater valves with different flow rates, and improve the user experience.

[0018] Furthermore, the wastewater level of the first and second wastewater valves can be adjusted based on the actual TDS value at the filter inlet, thereby more accurately reflecting the water quality at the filter inlet. This allows for more precise adjustment of the flushing water volume of the wastewater valves based on the water quality at the filter inlet, further enhancing the user experience.

[0019] Furthermore, compared to the method of first calculating the difference between the actual TDS value and the preset TDS value, then comparing the difference with the preset value, and selectively adjusting the positions of the first and second wastewater valves based on the comparison result, the method of directly comparing the actual TDS value with the preset TDS value and selectively adjusting the positions of the first and second wastewater valves based on the comparison result allows for a more intuitive determination of the relationship between the TDS value at the filter inlet and the preset TDS value. This makes it easier to adjust the positions of the first and second wastewater valves based on the actual TDS value and the preset TDS value.

[0020] Furthermore, if the actual TDS value is greater than the preset TDS value, it indicates that the water quality in the inlet pipe is relatively poor. If the filter is not flushed with a large flow of water after purifying the water in the inlet pipe, it will cause the filter to become clogged, affecting its service life. In this case, by adjusting the first wastewater valve to the flushing position and the second wastewater valve to the fully open position, a large flow of water can be flushed off, ensuring that impurities attached to the filter surface are washed off, preventing filter clogging, extending the filter's service life, and thus improving the user experience.

[0021] Furthermore, if the actual TDS value is less than or equal to the preset TDS value, it indicates that the water quality in the inlet pipe is relatively good. After the filter purifies the water, only a small amount of impurities adhere to the surface of the filter. By adjusting the second wastewater valve to the flushing setting, the amount of flushing water used can be reduced. In this way, not only can the impurities attached to the filter be washed away, but water resources can also be saved, water resource utilization can be improved, and the user experience can be further enhanced.

[0022] Furthermore, by adjusting the output flow of the booster pump after adjusting each wastewater valve, the current flushing flux can be determined based on the current setting of each wastewater valve after adjustment. The output flow of the booster pump can then be adjusted to match the current flushing flux. On the one hand, this avoids the normal operation of the water purification equipment due to insufficient output flow of the booster pump; on the other hand, it avoids water waste due to excessive output flow of the booster pump and reduces the noise generated by the booster pump, further improving the user experience.

[0023] Furthermore, compared to determining the target outlet flow rate of the booster pump by looking up a table, determining the target wastewater flow rate first, and then calculating the target outlet flow rate of the booster pump based on the target wastewater flow rate and the clean water flow rate, allows for a more accurate and faster calculation of the target outlet flow rate of the booster pump, thus facilitating the adjustment of the booster pump's outlet flow rate to the target outlet flow rate.

[0024] Furthermore, by adjusting the duty cycle of the booster pump to regulate its output flow rate, the adjustment of the booster pump's output flow rate can be made more accurate, thereby further improving the utilization rate of water resources, extending the service life of the filter, and ultimately enhancing the user experience.

[0025] Furthermore, the water purification device provided by the present invention, based on the above technical solution, possesses the beneficial effects of the aforementioned water purification device due to the adoption of the control method described above. Compared with the water purification device before the improvement, the water purification device of the present invention has a longer service life, saves more water, generates less noise during operation, and provides a better user experience. Attached Figure Description

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a schematic diagram of the connection structure of the water purification device of the present invention;

[0028] Figure 2 This is a flowchart of the control method of the present invention;

[0029] Figure 3 This is a flowchart of a first embodiment of the control method of the present invention;

[0030] Figure 4 This is a flowchart of a second embodiment of the control method of the present invention;

[0031] Figure 5 This is a flowchart of a third embodiment of the control method of the present invention.

[0032] List of reference numerals in the attached diagram:

[0033] 11. Raw water inlet; 12. Clean water outlet; 13. Wastewater outlet; 21. First inlet pipe; 211. TDS detection component; 22. Second inlet pipe; 3. Booster pump; 4. Filter; 41. Inlet; 42. Clean water outlet; 43. Wastewater outlet; 5. Wastewater pipe; 51. First wastewater valve; 52. Second wastewater valve; 6. Clean water pipe; 61. Flow detection component. Detailed Implementation

[0034] 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.

[0035] It should be noted that in the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly, for example, they can refer 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.

[0037] Please see Figure 1 , Figure 1 This is a schematic diagram of the connection structure of the water purification device of the present invention.

[0038] like Figure 1As shown, the water purification device of the present invention includes a booster pump 3 and a filter 4 connected in sequence. The filter 4 has an inlet 41, a clean water outlet 42, and a wastewater outlet 43. The outlet of the booster pump 3 is connected to the inlet 41 of the filter 4. The water purification device also includes a wastewater pipe 5 and a wastewater regulating component installed on the wastewater pipe 5. One end of the wastewater pipe 5 is connected to the wastewater outlet 43, and the other end of the wastewater pipe 5 is connected to the wastewater outlet 13 of the water purification device. The wastewater regulating component includes at least two wastewater valves installed in sequence on the wastewater pipe 5. Each wastewater valve has a fully open position and a flushing position. The flow rate of the flushing positions of the multiple wastewater valves decreases sequentially from the end closer to the wastewater outlet 43 to the end farther away from the wastewater outlet 43.

[0039] With this setup, by installing multiple wastewater valves with different flushing flows on the wastewater pipe 5, the flushing water flow can be adjusted by changing the position of the multiple wastewater valves, thus facilitating flushing with different wastewater flows.

[0040] It should be noted that the flow rate of the flushing position in this invention refers to the flow rate of water flowing out of the wastewater valve when the wastewater valve is adjusted to the flushing position; correspondingly, the flow rate of the fully open position in this invention refers to the flow rate of water flowing out of the wastewater valve when the wastewater valve is adjusted to the fully open position.

[0041] It should be noted that when the wastewater valve is in the fully open position, the wastewater valve is equivalent to a connected pipeline.

[0042] It should be noted that, in practical applications, those skilled in the art can configure the outlet of the booster pump 3 to be directly connected to the inlet 41 of the filter 4, or the booster pump 3 can be configured to be connected to the inlet 41 of the filter 4 through an inlet pipe, etc. Such adjustments and changes to the specific connection method between the booster pump 3 and the filter 4 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.

[0043] Preferably, such as Figure 1 As shown, the water purification device of the present invention also includes a first inlet pipe 21 and a second inlet pipe 22. One end of the first inlet pipe 21 is connected to the raw water inlet 11 of the water purification device, and the other end of the first inlet pipe 21 is connected to the inlet end of the booster pump 3. One end of the second inlet pipe 22 is connected to the outlet end of the booster pump 3, and the other end of the second inlet pipe 22 is connected to the inlet 41 of the filter 4.

[0044] It should be noted that, in practical applications, those skilled in the art can set filter 4 as a pre-filter, or filter 4 as a reverse osmosis membrane filter, or filter 4 as any other possible form, etc. Such adjustments and changes to the specific setting type of filter 4 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.

[0045] Preferably, the filter 4 of the present invention is a pre-filter.

[0046] It should be noted that, in practical applications, those skilled in the art can configure the water inlet 42 of the pre-filter to connect to the water purification pipe, so that purified water flows from the water inlet 42 into the water purification pipe for user use. Alternatively, the water inlet 42 of the pre-filter can be configured to connect to the inlet of the reverse osmosis membrane filter element, so that purified water flows from the water inlet 42 into the reverse osmosis membrane filter element for secondary purification. Or, the water inlet 42 of the pre-filter can be configured to connect to the inlet of the post-filter element, so that purified water flows from the water inlet 42 into the post-filter element to improve the water quality, 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.

[0047] For example, such as Figure 1 As shown, the water purification device of the present invention also includes a water purification pipe 6, one end of which is connected to the water purification port 42 of the filter 4, and the other end of which is connected to the water purification outlet 12 of the water purification device.

[0048] See next Figure 2 , Figure 2 This is a flowchart of the control method for a water purification device according to the present invention.

[0049] like Figure 2 As shown, after the water purification equipment is started, the control method of the present invention includes the following steps:

[0050] S1000: Obtain the actual water quality information at the inlet 41 of filter 4;

[0051] S2000: Selectively adjusts the setting of each wastewater valve based on actual water quality information.

[0052] With this setup, the water quality of the incoming water can be determined based on the actual water quality information at the inlet 41 of the filter 4. The setting of each wastewater valve can then be adjusted according to the incoming water quality, ensuring that the wastewater flushing flow rate matches the current incoming water quality. When the water purification equipment is used in areas with poor water quality, it can prevent the filter 4 from becoming clogged due to insufficient flushing flow rate, thus extending the filter 4's lifespan. When the water purification equipment is used in areas with good water quality, it can avoid water waste caused by excessive flushing flow rate. This allows for adjustment of the flushing water volume based on the incoming water quality, enabling different flow rates of wastewater valve flushing and improving the user experience.

[0053] It should be noted that, in practical applications, those skilled in the art can configure the water purification equipment to acquire the actual water quality information of the inlet 41 of the filter 4 when the equipment is first installed and used, and selectively adjust the level of each wastewater valve based on the actual water quality information. Alternatively, the water purification equipment can be configured to acquire the actual water quality information of the inlet 41 of the filter 4 after each power outage and restart, and selectively adjust the level of each wastewater valve based on the actual water quality information. Furthermore, the actual water quality information of the inlet 41 of the filter 4 can be acquired in real time during the use of the water purification equipment, and the level of each wastewater valve can be selectively adjusted based on the actual water quality information, etc. 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.

[0054] Preferably, after the water purification equipment is powered off and restarted, the actual water quality information of the inlet 41 of the filter 4 is obtained, and the setting of each wastewater valve is selectively adjusted according to the actual water quality information.

[0055] With this setup, on the one hand, compared to setting the water purifier to only acquire the actual water quality information at the inlet of filter 4 during initial installation and selectively adjust the setting of each wastewater valve based on the actual water quality information and preset water quality information, setting the water purifier to acquire the actual water quality information at the inlet 41 of filter 4 after a power outage and restart can prevent the water purifier from failing to adjust the flushing setting of the wastewater valve in a timely manner based on the actual water quality information at the inlet 41 after changing its usage location.

[0056] It should be noted that, in practical applications, those skilled in the art can configure the wastewater regulating component as two wastewater valves sequentially arranged on the wastewater pipe 5, thereby achieving the regulation of two flushing flows. Alternatively, the wastewater regulating component can be configured as three wastewater valves sequentially arranged on the wastewater pipe 5, thereby achieving the regulation of three flushing flows. Furthermore, the wastewater regulating component can be configured as multiple wastewater valves sequentially arranged on the wastewater pipe 5, thereby achieving the regulation of multiple flushing flows, and so on. Such adjustments and changes to the specific number of wastewater valves 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.

[0057] The following describes a specific embodiment of the present invention in detail, taking the case where the wastewater regulating component includes two wastewater valves as an example.

[0058] like Figure 1 As shown, the wastewater regulating component of the present invention includes a first wastewater valve 51 and a second wastewater valve 52 sequentially arranged on the wastewater pipe 5. The first wastewater valve 51 is arranged close to the wastewater outlet 43, and the second wastewater valve 52 is arranged away from the wastewater outlet 43. The flushing flow rate of the first wastewater valve 51 is greater than the flushing flow rate of the second wastewater valve 52.

[0059] With this setup, water delivered to the inlet 41 of the filter 4 by the booster pump 3 is filtered by the filter 4, and the filtered clean water flows out from the clean water outlet 42. The wastewater produced by filtration is discharged through the wastewater pipe 5. By setting the first wastewater valve 51 and the second wastewater valve 52, different flow rates of flushing water can be achieved by adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52. On the one hand, this makes the flushing of the filter 4 more thorough; on the other hand, it saves water resources and improves the user experience.

[0060] It should be noted that the flow rate of the flushing position of the first wastewater valve 51 refers to the flow rate of wastewater flowing out of the wastewater outlet 43 when the first wastewater valve 51 is in the flushing position and the second wastewater valve 52 is in the fully open position; the flow rate of the flushing position of the second wastewater valve 52 refers to the flow rate of wastewater flowing out of the wastewater outlet 43 when the second wastewater valve 52 is in the flushing position and the first wastewater valve 51 is in the fully open position.

[0061] It should also be noted that since the first wastewater valve 51 and the second wastewater valve 52 are connected in series on the wastewater pipe 5, the water flowing out of the wastewater outlet 43 of the filter 4 first passes through the first wastewater valve 51 and then through the second wastewater valve 52. When the first wastewater valve 51 is in the fully open position, the first wastewater valve 51 is equivalent to a connected pipeline, that is, all the water flowing out of the wastewater outlet 43 of the filter 4 flows into the second wastewater valve 52; when the second wastewater valve 52 is in the fully open position, the second wastewater valve 52 is equivalent to a connected pipeline, that is, all the water flowing out of the first wastewater valve 51 can flow out of the wastewater pipe 5.

[0062] The following section details the relationship between the positions of the first and second wastewater valves and the flushing flow rate, using several scenarios as examples.

[0063] For example, the flushing flow rate of the first wastewater valve 51 is 800cc, and the flushing flow rate of the second wastewater valve 52 is 400cc.

[0064] Scenario 1:

[0065] If the first wastewater valve 51 is in the flushing position and the second wastewater valve 52 is in the fully open position, then the flow rate of water flowing out of the wastewater pipe 5 is 800cc, which means that a large flow rate of 800cc can be achieved for flushing.

[0066] Scenario 2:

[0067] If the first wastewater valve 51 is in the flushing position and the second wastewater valve 52 is in the flushing position, then the flow rate of water flowing out of the wastewater pipe 5 is 400cc, which means that a small flow rate of 400cc can be achieved for flushing.

[0068] Scenario 3:

[0069] If the first wastewater valve 51 is in the fully open position and the second wastewater valve 52 is in the flushing position, then the flow rate of water flowing out from the wastewater valve 5 is 400cc, which means that a small flow rate of 400cc can be achieved for flushing.

[0070] It should be noted that, in practical applications, those skilled in the art can set the water quality information to the TDS value of water, or the water quality information to the turbidity of water, etc. Such adjustments and changes to the specific setting type of water quality information do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0071] Preferably, the water quality information of the present invention is the TDS value.

[0072] The steps for “obtaining the actual water quality information of the inlet 41 of filter 4” specifically include:

[0073] S1100: Obtain the actual TDS value of the inlet 41 of filter 4;

[0074] The steps of "selectively adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52 based on actual water quality information" specifically include:

[0075] S2100: Selectively adjust the positions of the first wastewater valve 51 and the second wastewater valve 52 according to the actual TDS value.

[0076] With this setting, the wastewater levels of the first wastewater valve 51 and the second wastewater valve 52 can be adjusted according to the actual TDS value of the inlet 41 of the filter 4, thereby more accurately reflecting the water quality of the incoming water. This allows for more accurate adjustment of the flushing flow of the wastewater valve based on the water quality at the inlet 41 of the filter 4, further enhancing the user experience.

[0077] It should be noted that, in practical applications, those skilled in the art can directly access the water in the first inlet pipe 21 to test the TDS value of the water to obtain the actual TDS value of the filter 4 inlet 41. Alternatively, a TDS detection component can be installed on the inlet pipe to detect the TDS value of the water in the inlet pipe, etc. Such adjustments and changes to the specific method of obtaining the actual TDS value of the filter 4 inlet 41 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.

[0078] Preferably, such as Figure 1 As shown, the water purification device of the present invention also includes a TDS detection component 211, which is disposed on the first water inlet pipe 21 and is used to detect the TDS value of the water in the first water inlet pipe 21.

[0079] With this setup, by installing a TDS detection component 211 on the first water inlet pipe 21, the TDS value of the water in the first water inlet pipe 21 can be obtained more directly and conveniently, thereby further improving the user experience.

[0080] It should be noted that in practical applications, the TDS detection component 211 is not limited to being set on the first water inlet pipe 21. For example, the TDS detection component 211 can also be set on the second water inlet pipe 22, 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.

[0081] It should also be noted that, in practical applications, those skilled in the art can set the number of TDS detection components 211 to only one, or the number of TDS detection components 211 to multiple, etc. Such adjustments and changes to the specific number of TDS detection components 211 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0082] Preferably, such as Figure 1 As shown, the number of TDS detection components 211 is set to one.

[0083] It should be noted that, in practical applications, those skilled in the art may obtain only the detection value of one TDS detection component 211 as the actual TDS value, or may continuously obtain multiple TDS detection values ​​and calculate the average value of the multiple TDS detection values ​​as the actual TDS value, etc. Such adjustments and changes to the specific method of obtaining the actual TDS value of the inlet 41 of the filter 4 do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0084] Preferably, multiple TDS detection values ​​are continuously acquired, and the average value of the multiple TDS detection values ​​is calculated as the actual TDS value.

[0085] This setting improves the accuracy of the actual TDS value, avoids the impact of detection error of TDS detection component 211 on the accuracy of the actual TDS value, and also avoids the impact of impurities mixed in the water inlet pipe on the accuracy of the actual TDS value, thus further enhancing the user experience.

[0086] It should be noted that, in practical applications, those skilled in the art can directly calculate the average value as the actual TDS value based on the multiple TDS values ​​obtained, or remove the maximum and minimum values ​​from the multiple TDS values ​​and then calculate the average value as the actual TDS value, 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.

[0087] Preferably, the maximum and minimum values ​​are removed from the multiple TDS values ​​obtained, and then the average value is calculated as the actual TDS value.

[0088] For example, the acquired multiple TDS values ​​are denoted as T1, T2, T3, T4, and T5, respectively.

[0089] T1=140ppm; T2=150ppm; T3=152ppm; T4=154ppm; T5=160ppm;

[0090] Then, T min =T1=140ppm; T max =T5=160ppm, and remove these two values ​​before calculating the average;

[0091] Actual TDS value = (T2 + T3 + T4) ÷ 3 = 152 ppm.

[0092] That is, the actual TDS value of the inlet 41 of filter 4 is 152 ppm.

[0093] It should be noted that, in practical applications, those skilled in the art can set the preset TDS value to a fixed value, or the preset TDS value can be set to an input value that is input by the user to the controller of the water purification device, etc. Such adjustments and changes to the specific setting method of the preset TDS value do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0094] Preferably, the preset TDS value is set as the input value that is input by the user to the controller of the water purification device.

[0095] By setting the preset TDS value to a fixed value, rather than setting it to a fixed value, the preset TDS value can be adjusted according to the actual needs of different users. This allows for personalized design to meet user needs and further enhance the user experience.

[0096] It should be noted that, in practical applications, those skilled in the art can obtain the preset TDS value by inputting the specific value of the preset TDS value through a remote control that is connected to the water purification equipment, or by operating the buttons on the water purification equipment to input the specific value of the preset TDS value, etc. Such adjustments and changes to the specific method of obtaining the preset TDS value do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0097] Preferably, the preset TDS value is obtained by inputting the specific value of the preset TDS value through operating the button on the water purification device.

[0098] It should be noted that in practical applications, those skilled in the art can set the specific value of the preset TDS based on experience or experiments.

[0099] For example, the preset TDS value is set to 150 ppm.

[0100] It should also be noted that, in practical applications, those skilled in the art can directly compare the actual TDS value with the preset TDS value, and selectively adjust the positions of the first wastewater valve 51 and the second wastewater valve 52 based on the comparison result. Alternatively, they can first calculate the difference between the actual TDS value and the preset TDS value, and then compare the difference with the preset value. Based on the comparison result, they can selectively adjust the positions of the first wastewater valve 51 and the second wastewater valve 52. Or, they can first calculate the ratio between the actual TDS value and the preset TDS value, and then compare the ratio with the preset value. Based on the comparison result, they can selectively adjust the positions of the first wastewater valve 51 and the second wastewater valve 52, 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.

[0101] Preferably, the step of "selectively adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52 according to the actual TDS value and the preset TDS value" specifically includes:

[0102] S2110: Compare the actual TDS value with the preset TDS value;

[0103] S2120: Based on the comparison results, selectively adjust the positions of the first wastewater valve 51 and the second wastewater valve 52.

[0104] Compared to the method of first calculating the difference between the actual TDS value and the preset TDS value, then comparing the difference with the preset value, and selectively adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52 based on the comparison result, this setting allows for a more intuitive determination of the relationship between the TDS value at the inlet of the filter 4 and the preset TDS value. This makes it easier to adjust the positions of the first wastewater valve 51 and the second wastewater valve 52 based on the actual TDS value and the preset TDS value.

[0105] Preferably, the step of "selectively adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52 according to the comparison results" specifically includes:

[0106] S2121: If the actual TDS value is greater than the preset TDS value, adjust the first wastewater valve 51 to the flushing position and adjust the second wastewater valve 52 to the fully open position.

[0107] With this setting, if the actual TDS value is greater than the preset TDS value, it indicates that the water quality in the inlet pipe is relatively poor. After the filter 4 purifies the water in the inlet pipe, if the filter 4 is not flushed with a large flow of water, it will cause the filter 4 to become clogged, affecting its service life. At this time, by adjusting the first wastewater valve 51 to the flushing position and the second wastewater valve 52 to the fully open position, a large flow of flushing can be achieved, thereby ensuring that the impurities attached to the surface of the filter 4 are flushed off, preventing the filter 4 from becoming clogged, improving the service life of the filter 4, and thus improving the user experience.

[0108] Preferably, the step of "selectively adjusting the positions of the first wastewater valve 51 and the second wastewater valve 52 according to the comparison results" specifically includes:

[0109] S2122: If the actual TDS value is less than or equal to the preset TDS value, adjust the second wastewater valve 52 to the flushing position, and do not adjust the position of the first wastewater valve 51.

[0110] With this setting, when the actual TDS value is less than or equal to the preset TDS value, it indicates that the water quality in the inlet pipe is relatively good. After the filter 4 purifies the water, only a small amount of impurities adhere to the surface of the filter 4. By adjusting the position of the second wastewater valve 52 to the flushing position, the amount of flushing water used can be reduced. In this way, not only can the impurities attached to the filter 4 be flushed clean, but water resources can also be saved, the utilization rate of water resources can be improved, and the user experience can be further enhanced.

[0111] It should be noted that in practical applications, when the actual TDS value is less than or equal to the preset TDS value, it is not limited to adjusting the second wastewater valve 52 to the flushing position without adjusting the position of the first wastewater valve 51. For example, the second wastewater valve 52 can be adjusted to the flushing position and the first wastewater valve 51 can be adjusted to the fully open position, or the second wastewater valve 52 can be adjusted to the flushing position and the first wastewater valve 51 can be adjusted to the flushing position, 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.

[0112] Preferably, when the actual TDS value is less than or equal to the preset TDS value, the second wastewater valve 52 is adjusted to the flushing position, and the position of the first wastewater valve 51 is not adjusted.

[0113] With this setting, when the actual TDS value is less than or equal to the preset TDS value, it indicates that the water quality at the inlet 41 of the filter 4 is good. At this time, it is only necessary to adjust the second wastewater valve 52 to the flushing position to achieve small-flow flushing. Not adjusting the position of the first wastewater valve 51 can reduce the adjustment frequency of the first wastewater valve 51, thereby improving the service life of the first wastewater valve 51.

[0114] It should be noted that not adjusting the position of the first wastewater valve 51 means that before adjusting the first wastewater valve 51 and the second wastewater valve 52, if the first wastewater valve 51 is in the flushing position, then the first wastewater valve 51 is kept in the flushing position; if the first wastewater valve 51 is in the fully open position, then the first wastewater valve 51 is kept in the fully open position.

[0115] The adjustment process of the first wastewater valve and the second wastewater valve of the present invention is described in detail below with reference to several scenarios.

[0116] Set the preset TDS to 150 ppm.

[0117] Scenario 1:

[0118] If the actual TDS value is 170ppm, then the actual TDS value of 170ppm is greater than the preset TDS of 150ppm. In this case, the first wastewater valve 51 is adjusted to the flushing position, and the second wastewater valve 52 is adjusted to the fully open position.

[0119] Scenario 2:

[0120] If the actual TDS value is 150ppm, then the actual TDS value is the preset TDS value of 150ppm. In this case, the second wastewater valve 52 is adjusted to the flushing position, and the position of the first wastewater valve 51 is not adjusted.

[0121] Scenario 3:

[0122] If the actual TDS value is 140ppm, then the actual TDS value of 140ppm < the preset TDS of 150ppm. In this case, the second wastewater valve 52 is adjusted to the flushing position, and the position of the first wastewater valve 51 is not adjusted.

[0123] It should be noted that although the present invention is described using the example of a wastewater regulating component including two wastewater valves, this is not restrictive. For example, the control method of the present invention is also applicable to situations where the wastewater regulating component includes multiple wastewater valves, 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.

[0124] It should also be noted that when both the first wastewater valve 51 and the second wastewater valve 52 are in the fully open position, the water purification equipment is in manual flushing mode, that is, the outflow of wastewater pipe 5 is adjusted to the maximum, so that the user can manually flush the filter 4.

[0125] It should also be noted that after adjusting the setting of each wastewater valve, the booster pump 3 can be made to operate at the same water flow rate, or the water flow rate of the booster pump 3 can be adjusted and the booster pump 3 can be made to operate at different water flow rates, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present invention and should be included within the protection scope of the present invention.

[0126] Preferably, after adjusting the setting of each wastewater valve, the flow rate of the booster pump 3 is adjusted.

[0127] The following two examples illustrate specific implementations of booster pump regulation.

[0128] Example 1:

[0129] Preferably, after adjusting the setting of each wastewater valve, the control method of the present invention further includes:

[0130] Get the current setting of each wastewater valve;

[0131] Adjust the water flow rate of booster pump 3 according to the current gear.

[0132] With this setting, the current flushing flow rate can be determined based on the current setting of each wastewater valve after adjustment, and the output flow rate of booster pump 3 can be adjusted to match the current flushing flow rate. On the one hand, this can avoid affecting the normal use of the water purification equipment due to the insufficient output flow rate of booster pump 3; on the other hand, it can avoid water waste due to the excessive output flow rate of booster pump 3, and reduce the noise generated by the operation of booster pump 3, further improving the user experience.

[0133] It should be noted that, in practical applications, those skilled in the art can adjust the flow rate of the booster pump 3 by adjusting its rotation speed, or by adjusting its duty cycle, etc. Such adjustments and changes to the specific adjustment method of the booster pump 3 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0134] Preferably, the step of "adjusting the outlet flow rate of booster pump 3" specifically includes:

[0135] Adjust the duty cycle of booster pump 3 to adjust the water flow rate of booster pump 3.

[0136] By adjusting the duty cycle of the booster pump 3 to regulate its water flow rate, the adjustment of the booster pump 3's water flow rate can be made more accurate, further enhancing the user experience.

[0137] It should be noted that the booster pump motor uses pulse width modulation (PWM), which means that the power supply provides power to the motor in the form of square wave pulses at a specific frequency. The duty cycle is the duration of the high level in one cycle divided by the duration of one cycle. Therefore, the higher the duty cycle, the longer the high level output time and the stronger the output effect.

[0138] The following describes in detail a specific embodiment of booster pump regulation, taking the wastewater regulating components, including the first wastewater valve and the second wastewater valve, as an example.

[0139] Preferably, after adjusting the first wastewater valve 51 and the second wastewater valve 52, the control method of the present invention further includes:

[0140] Obtain the current gear position of the first wastewater valve 51 and record it as the first gear position;

[0141] Obtain the current position of the second wastewater valve 52 and record it as the second position;

[0142] Adjust the duty cycle of booster pump 3 according to the first and second gears to adjust the water flow rate of booster pump 3.

[0143] It should be noted that, based on the current position of the first wastewater valve 51 and the second wastewater valve 52, the relative size of the outflow of wastewater pipe 5 can be determined. If the outflow of wastewater pipe 5 is larger, it means that more flushing water is required, that is, the outflow of booster pump needs to be increased to meet the flushing of filter 4. Correspondingly, if the outflow of wastewater pipe 5 is smaller, it means that less flushing water is required, that is, the outflow of booster pump 3 needs to be reduced to save water and reduce the noise of booster pump 3.

[0144] It should also be noted that before each water purification device's booster pump leaves the factory, the duty cycle of the voltage across the motor of booster pump 3 (hereinafter referred to as the booster pump's voltage duty cycle) is adjusted to obtain the voltage across the motor of booster pump 3 and the water flow rate of booster pump 3 corresponding to each voltage duty cycle. This yields data on the duty cycle of each voltage and the corresponding water flow rate of booster pump 3, establishing the correspondence between the voltage duty cycle of booster pump 3 and the water flow rate of booster pump 3. In other words, the higher the voltage duty cycle of booster pump 3, the greater the water flow rate of booster pump 3.

[0145] It should be noted that the adjustment of the water flow rate of the booster pump 3 is not limited to adjusting the voltage duty cycle of the booster pump 3. For example, the water flow rate of the booster pump 3 can also be adjusted by adjusting the current duty cycle of the booster pump 3, etc. Such flexible adjustments and changes do not deviate from the scope of protection of this invention. Of course, it is preferable to adjust the water flow rate of the booster pump 3 by adjusting the voltage duty cycle of the booster pump 3.

[0146] For ease of study, the voltage duty cycle of booster pump 3 is used as the vertical axis, and the water flow rate of booster pump 3 is used as the horizontal axis. The relationship between the voltage duty cycle of booster pump 3 and the water flow rate of booster pump 3 is considered as a straight line, i.e.

[0147] D = k × Q + b, where D is the voltage duty cycle of booster pump 3, Q is the water flow rate of booster pump 3, and k is a constant.

[0148] Through testing, when the voltage duty cycle of booster pump 3 was adjusted to D1, the measured water flow rate of booster pump 3 was Q1.

[0149] When the voltage duty cycle of booster pump 3 is adjusted to D2, the measured outlet water flow rate of booster pump 3 is Q2.

[0150] When the voltage duty cycle of booster pump 3 is adjusted to D3, the measured outlet water flow rate of booster pump 3 is Q3.

[0151] Substitute any two sets of values ​​above into the formula D = k × Q + b, that is...

[0152] D1 = k × Q1 + b;

[0153] D2 = k × Q2 + b;

[0154] D3 = k × Q3 + b;

[0155] The specific values ​​of k and b can then be obtained, which gives the relationship between the voltage duty cycle of booster pump 3 and the water flow rate of booster pump 3.

[0156] It should be noted that, in practical applications, those skilled in the art can adjust the duty cycle of the booster pump 3 based on experience to adjust the water flow rate of the booster pump 3, or they can adjust the duty cycle of the booster pump 3 based on experiments to adjust the water flow rate of the booster pump 3, etc. Such adjustments and changes to the specific adjustment method of the duty cycle of the booster pump 3 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.

[0157] Specifically, if the outflow of wastewater pipe 5 is larger, it means that more flushing water is needed, and the duty cycle of booster pump 3 is larger; if the outflow of wastewater pipe 5 is smaller, it means that less flushing water is needed, and the duty cycle of booster pump 3 is smaller.

[0158] Preferably, the step of "adjusting the duty cycle of the booster pump 3 according to the first gear and the second gear" specifically includes:

[0159] If the first gear is the flushing gear or the fully open gear and the second gear is the flushing gear, then adjust the booster pump 3 to the first preset duty cycle;

[0160] If the first gear is the flushing gear and the second gear is the fully open gear, then adjust the booster pump 3 to the second preset duty cycle;

[0161] The first preset duty cycle is less than the second preset duty cycle.

[0162] With this setting, when the first setting is the flushing setting or the fully open setting, and the second setting is the flushing setting, it indicates that the flushing water volume is small. Adjusting the booster pump 3 to a smaller duty cycle can reduce the output flow of the booster pump 3, thus reducing the noise of the booster pump 3 while meeting the flushing water volume requirements. When the first setting is the flushing setting and the second setting is the fully open setting, adjusting the booster pump 3 to a larger duty cycle can match the output water volume of the booster pump 3 with the flushing water volume, thereby avoiding the impact on normal water production or the cleaning of the filter 4 due to the insufficient output water volume of the booster pump 3.

[0163] Preferably, the control method of the present invention further includes: if both the first gear and the second gear are in the fully open position, then the booster pump 3 is adjusted to a third preset duty cycle, wherein the third preset duty cycle is greater than the first preset duty cycle and the third preset duty cycle is greater than the second preset duty cycle.

[0164] It should be noted that, in practical applications, those skilled in the art can set the specific values ​​of the first preset duty cycle and the second preset duty cycle based on experience or experimentation.

[0165] The booster pump adjustment process of Example 1 is described in detail below with reference to the following scenarios.

[0166] For example, the first preset duty cycle is set to 60%, the second preset duty cycle is 80%, and the third preset duty cycle is 100%.

[0167] Scenario 1:

[0168] If both the first and second gears are flushing gears, adjust the duty cycle of booster pump 3 to 60%.

[0169] Scenario 2:

[0170] If the first gear is fully open and the second gear is flushing, then adjust the duty cycle of the booster pump 3 to 60%.

[0171] Scenario 3:

[0172] If the first gear is the flushing gear and the second gear is the fully open gear, then adjust the duty cycle of the booster pump 3 to 80%.

[0173] Scenario 4:

[0174] If the first and second gears are in the fully open position, adjust the duty cycle of booster pump 3 to 100%.

[0175] Example 2:

[0176] Preferably, after adjusting the setting of each wastewater valve, the control method of the present invention further includes:

[0177] Obtain the clean water flow rate at the clean water inlet 42 of filter 4;

[0178] Adjust the output flow rate of booster pump 3 according to the current gear and water flow rate.

[0179] By setting up the system to obtain the current setting of each wastewater valve and the clean water flow rate at the clean water inlet 42 of the filter 4, and adjusting the booster pump 3 according to the current setting and clean water flow rate, the booster pump 3 can be adjusted more accurately to match the water flow rate of the booster pump 3 with the current flushing flow rate, thereby further improving the user experience.

[0180] It should be noted that, in practical applications, those skilled in the art can set a flow detection component at the water inlet 42 of the filter 4 and use the flow detection component to detect the water flow rate at the water inlet 42 of the filter 4. Alternatively, they can directly collect the water at the water inlet 42 and calculate the water flow rate based on the volume of the water and the time it takes for the water to flow out. Such adjustments and changes to the specific method of obtaining the water flow rate do not deviate from the scope of protection of this invention.

[0181] Preferably, such as Figure 1As shown, the water purification device of the present invention also includes a flow detection component 61 disposed on the water purification pipe 6, and the water purification flow at the water purification outlet 42 is obtained by the flow detection component 61.

[0182] With this setup, the water flow rate at the water inlet 42 of filter 4 can be obtained more conveniently and accurately.

[0183] It should be noted that, in practical applications, those skilled in the art can configure the flow detection component 61 as a flow meter, or as a flow sensor, etc. Such adjustments and changes to the specific configuration of the flow detection component 61 do not deviate from the protection scope of this invention.

[0184] Preferably, the flow detection component 61 is configured as a flow meter.

[0185] It should be noted that, in practical applications, those skilled in the art can determine the target water flow rate of the booster pump 3 by looking up a table, and adjust the water flow rate of the booster pump 3 to the target water flow rate. That is, the target water flow rate of the booster pump 3 can be determined by looking up the correspondence table between the current gear, the clean water flow rate, and the water flow rate of the booster pump 3. Alternatively, the target wastewater flow rate can be determined based on the current gear, and then the target water flow rate of the booster pump 3 can be calculated based on the target wastewater flow rate and the clean water flow rate, and the water flow rate of the booster pump 3 can be adjusted to the target water flow rate, 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.

[0186] Preferably, the step of "adjusting the outlet flow rate of booster pump 3 according to the current gear and purified water flow rate" specifically includes:

[0187] Determine the target wastewater flow rate for wastewater pipe 5 based on the current gear position;

[0188] Calculate the target outlet flow rate of booster pump 3 based on the target wastewater flow rate and the target clean water flow rate;

[0189] Adjust the flow rate of booster pump 3 to the target flow rate.

[0190] With this setup, compared to determining the target outlet flow rate of booster pump 3 by looking up a table, determining the target wastewater flow rate first and then calculating the target outlet flow rate of booster pump 3 based on the target wastewater flow rate and the clean water flow rate allows for a more accurate and faster calculation of the target outlet flow rate of booster pump 3. This makes it easier to adjust the outlet flow rate of booster pump 3 to the target outlet flow rate by adjusting booster pump 3.

[0191] It should be noted that the water flowing out from the outlet of the booster pump 3 flows into the filter 4 through the inlet 41 of the filter 4. Part of the water entering the filter 4 is purified by the filter 4 and flows out from the clean water outlet 42 of the filter 4, while the other part flows out from the waste water outlet 43 of the filter 4 through the waste water pipe 5. If the water flow rate from the waste water outlet 43 is just enough to flush the filter 4, then the waste water flow rate from the waste water pipe 5 is the target waste water flow rate. Correspondingly, if the water flow rate from the outlet of the booster pump 3 is just the sum of the target waste water flow rate and the clean water flow rate, then the water flow rate from the booster pump 3 is the target water flow rate. That is, when the water flow rate of the booster pump 3 is adjusted to the target water flow rate, the water flow rate from the waste water outlet 43 is just enough to flush the filter 4, thereby saving water resources and improving the user experience.

[0192] For example, such as Figure 1 As shown, the wastewater regulating component includes a first wastewater valve 51 and a second wastewater valve 52 sequentially arranged on the wastewater pipe 5, wherein the flushing flow rate of the first wastewater valve 51 is Q. f1 (Unit: cc), the flow rate of the flushing position of the second wastewater valve 52 is Q. f2 (Unit: cc), where Q f1 >Q f2 Within a set time period T, the target wastewater flow rate from wastewater pipe 5 is Q. F (Unit is m) 3 / h), where t is the set duration (in hours).

[0193] For consistency of units, 1cc = 1mL = 1 × 10⁻⁶ -6 m 3 ;

[0194] The process of determining the target wastewater flow rate of the present invention will be described in detail below with reference to the following scenarios.

[0195] Scenario 1:

[0196] If the first wastewater valve 51 is in the flushing position and the second wastewater valve 52 is in the fully open position, then the water flow rate from the wastewater pipe 5 is Q. f1 The target wastewater flow rate is:

[0197] Q F =Q f1 ÷t×10 -6 .

[0198] Scenario 2:

[0199] If the first wastewater valve 51 is in the fully open position and the second wastewater valve 52 is in the flushing position, then the water flow rate from the wastewater pipe 5 is Q. f2 The target wastewater flow rate is:

[0200] Q F =Q f2 ÷t×10 -6 .

[0201] Scenario 3:

[0202] If the first wastewater valve 51 and the second wastewater valve 52 are both in the flushing position, then the water flow rate from the wastewater pipe 5 is Q. f2 That is, the target wastewater flow rate is Q. F =Q f2 ÷t×10 -6 .

[0203] Due to the target wastewater flow rate Q F and water purification flow rate Q J The sum of these values ​​is the target outlet flow rate Q of booster pump 3. i Q i =Q F +Q J .

[0204] Therefore, when the output of booster pump 3 is adjusted to the target output Q, the output flow rate of booster pump 3 just meets the requirements for water production and flushing. That is, while meeting the requirements of filter 4 to filter clean water, it can ensure that the water flow from wastewater outlet 43 is just enough to flush filter 4, making the flushing water of filter 4 more reasonable and improving the utilization rate of water resources.

[0205] It should be noted that, in practical applications, those skilled in the art can adjust the flow rate of the booster pump 3 by adjusting its rotation speed, or by adjusting its duty cycle, etc. Such adjustments and changes to the specific adjustment method of the booster pump 3 do not deviate from the principles and scope of the present invention and should be included within the protection scope of the present invention.

[0206] Preferably, the step of "adjusting the outlet flow rate of booster pump 3" specifically includes:

[0207] Adjust the duty cycle of booster pump 3 to adjust the water flow rate of booster pump 3.

[0208] By adjusting the duty cycle of the booster pump 3 to regulate its output water flow rate, the output water flow rate of the booster pump 3 can be adjusted more accurately, further enhancing the user experience.

[0209] It should be noted that, as mentioned earlier, the higher the duty cycle of the booster pump 3, the greater the water flow rate of the booster pump 3. For each water purification device, the corresponding relationship between the duty cycle of the booster pump 3 and the water flow rate of the booster pump 3 can be obtained, that is, D=k×Q+b, where k>0 and b is a constant. The specific determination process of the corresponding relationship between the duty cycle of the booster pump 3 and the water flow rate of the booster pump 3 will not be elaborated here.

[0210] If the target outlet flow rate of booster pump 3 is Q i In order to adjust the outlet flow rate of booster pump 3 to the target outlet flow rate Q i Then, simply follow the formula:

[0211] D i =k×Q i +b;

[0212] To calculate the target duty cycle D of booster pump 3 i And adjust the duty cycle of booster pump 3 to the target duty cycle D. i That's all.

[0213] In addition, the present invention also provides a water purification device including a controller configured to perform the control method described above.

[0214] It should be noted that those skilled in the art can configure the controller to communicate with the TDS detection component 211 and the flow detection component 61 to achieve intelligent detection of the water quality at the inlet 41 of the filter 4 and the flow rate at the purified water outlet 42.

[0215] It should also be noted that those skilled in the art can also configure the controller to communicate with the first wastewater valve 51 and the second wastewater valve 52 to achieve intelligent adjustment of the gear positions of the first wastewater valve 51 and the second wastewater valve 52.

[0216] 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 purification device, characterized in that, The water purification equipment includes a booster pump and a filter connected in sequence. The filter has an inlet, a clean water outlet, and a wastewater outlet. The outlet of the booster pump is connected to the inlet. The water purification equipment also includes a wastewater pipe and a wastewater regulating component. The wastewater pipe is connected to the wastewater outlet. The wastewater regulating component includes at least two wastewater valves sequentially arranged on the wastewater pipe. Each wastewater valve has a flushing position and a fully open position. The flow rate of the flushing position of the wastewater valve decreases sequentially from the end closer to the wastewater outlet to the end farther away from the wastewater outlet. After starting the water purification equipment, the control method includes: Obtain the actual water quality information at the inlet of the filter; Based on the actual water quality information, the setting of each wastewater valve is selectively adjusted; After adjusting the position of each of the wastewater valves, the control method further includes: Obtain the current gear position of each of the wastewater valves; Adjust the water flow rate of the booster pump according to the current gear position; or Obtain the current gear position of each of the wastewater valves; Obtain the clean water flow rate at the clean water inlet of the filter; Adjust the output flow rate of the booster pump according to the current gear and the purified water flow rate.

2. The control method according to claim 1, characterized in that, The wastewater regulating component includes a first wastewater valve and a second wastewater valve sequentially disposed on the wastewater pipe. One end of the first wastewater valve is connected to the wastewater outlet, and the other end of the first wastewater valve is connected to the second wastewater valve. The flow rate of the flushing setting of the first wastewater valve is greater than the flow rate of the flushing setting of the second wastewater valve. The step of selectively adjusting the setting of each wastewater valve based on the actual water quality information specifically includes: Based on the actual water quality information, the positions of the first wastewater valve and the second wastewater valve are selectively adjusted.

3. The control method according to claim 2, characterized in that, The water quality information includes TDS values. The step of obtaining the actual water quality information at the inlet of the filter specifically includes: Obtain the actual TDS value at the inlet of the filter; The step of selectively adjusting the positions of the first wastewater valve and the second wastewater valve based on the actual water quality information specifically includes: Based on the actual TDS value, the positions of the first wastewater valve and the second wastewater valve are selectively adjusted.

4. The control method according to claim 3, characterized in that, The step of selectively adjusting the positions of the first wastewater valve and the second wastewater valve based on the actual TDS value specifically includes: Compare the actual TDS value with the preset TDS value; Based on the comparison results, the positions of the first wastewater valve and the second wastewater valve are selectively adjusted.

5. The control method according to claim 4, characterized in that, The step of selectively adjusting the positions of the first wastewater valve and the second wastewater valve based on the comparison results specifically includes: If the actual TDS value is greater than the preset TDS value, then the first wastewater valve is adjusted to the flushing position and the second wastewater valve is adjusted to the fully open position.

6. The control method according to claim 4, characterized in that, The step of selectively adjusting the positions of the first wastewater valve and the second wastewater valve based on the comparison results specifically includes: If the actual TDS value is less than or equal to the preset TDS value, then the second wastewater valve is adjusted to the flushing position, and the first wastewater valve is adjusted to the fully open position or the flushing position; or Adjust the second wastewater valve to the flushing position, without adjusting the position of the first wastewater valve.

7. The control method according to claim 1, characterized in that, The step of adjusting the output flow rate of the booster pump according to the current gear and the purified water flow rate specifically includes: Based on the current gear position, determine the target wastewater flow rate of the wastewater pipe; Calculate the target outlet flow rate of the booster pump based on the target wastewater flow rate and the target clean water flow rate; Adjust the flow rate of the booster pump to the target flow rate.

8. The control method according to claim 1 or 7, characterized in that, The step of adjusting the outlet flow rate of the booster pump specifically includes: Adjust the duty cycle of the booster pump to adjust the water flow rate of the booster pump.

9. A water purification device, characterized in that, The water purification device includes a controller configured to perform the control method according to any one of claims 1 to 8.

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