Water purifiers and water purifier control methods

Abstract

This application relates to a water purifier and a water purifier control method. The water purifier includes: a pressure detection device installed at the inlet of the pre-filter cartridge for detecting water pressure; a first flow detection device installed at the outlet of the water purification branch for detecting the outlet flow rate; a controller for acquiring the water pressure and outlet flow rates; determining a water pressure reference value based on the water pressure; acquiring a first start-up flushing flow rate value based on the water pressure reference value; comparing the outlet flow rate value with the first start-up flushing flow rate value to obtain a first comparison result; and controlling the flushing device to flush the pre-filter cartridge based on the first comparison result. The flushing device is used to flush the pre-filter cartridge in response to the control command of the controller. In this solution, the water purifier can more accurately control the flushing device to flush the pre-filter cartridge under different water pressures, avoiding situations such as failure to flush in time or wasted water during flushing, thereby extending the service life of the pre-filter cartridge.

Description

Technical Field

[0001] This application relates to the field of water purifier technology, and in particular to a water purifier, a water purifier control method, a storage medium, and a computer program product. Background Technology

[0002] A water purifier includes a pre-filter, which is a crucial component in the system. It is typically connected to the water inlet. The raw water requiring filtration enters the purifier through this inlet, and the pre-filter performs the first stage of filtration, removing harmful substances such as sediment, rust, bacteria, colloids, and large amounts of organic matter, resulting in purified water.

[0003] In traditional technologies, the cleaning methods for the pre-filter in a water purifier include manual disassembly and rinsing, and automatic rinsing. When the pre-filter is cleaned automatically, the flow rate after attenuation is detected by a flow meter to determine whether to activate the automatic rinsing of the pre-filter.

[0004] However, the flow rate of the pre-filter varies due to differences in tap water pressure. When the tap water pressure is high, the flow rate is also high, which can lead to the pre-filter not being flushed when it should. Conversely, when the tap water pressure is low, the flow rate is low, which can cause the pre-filter to automatically flush when it doesn't need to, resulting in wasted water. Therefore, relying on a single, fixed flow rate to determine whether flushing is needed can lead to inconsistencies between the result and the actual dirt level of the filter, resulting in delayed flushing or wasted water. Summary of the Invention

[0005] Therefore, it is necessary to provide a water purifier and water purifier control method, computer-readable storage medium and computer program product that can more accurately activate the flushing function to address the above-mentioned technical problems.

[0006] In a first aspect, this application provides a water purifier. The water purifier includes:

[0007] A pressure detection device is installed at the water inlet of the pre-filter cartridge to detect the water pressure at the water inlet.

[0008] The first flow detection device is installed at the outlet end of the water purification branch and is used to detect the flow rate value at the outlet end.

[0009] The controller is configured to acquire the water pressure value detected by the pressure detection device and the outflow rate value detected by the first flow detection device; determine a water pressure reference value based on the water pressure value; acquire a first start-up flushing flow rate value based on the water pressure reference value; compare the outflow rate value with the first start-up flushing flow rate value to obtain a first comparison result; and control the flushing device to flush the pre-filter element based on the first comparison result; wherein the water pressure reference value is the average value of the water pressure values ​​detected cumulatively over a first preset time period when no water is being drawn.

[0010] A rinsing device is used to rinse the pre-filter in response to a control command from the controller.

[0011] In one embodiment, the water purifier further includes:

[0012] The second flow detection device is installed at the inlet or wastewater end of the reverse osmosis membrane filter element and is used to detect the flushing flow rate of the reverse osmosis membrane filter element.

[0013] The controller is further configured to acquire the flushing flow rate value detected by the second flow detection device; acquire the second start-up flushing flow rate value according to the water pressure reference value; compare the flushing flow rate value with the second start-up flushing flow rate value to obtain a second comparison result; and control the flushing device to flush the pre-filter according to the second comparison result.

[0014] In one embodiment, the controller is specifically used to obtain the correspondence between the water pressure reference value and the first start flushing flow rate value; determine the first preset water pressure range into which the water pressure reference value falls; and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

[0015] In one embodiment, the controller is specifically configured to control the flushing device to flush the pre-filter when the first comparison result is that the outflow rate is not greater than the first start-up flushing flow rate.

[0016] In one embodiment, the controller is specifically used to obtain the correspondence between the water pressure reference value and the second start flushing flow rate value; determine the second preset water pressure range into which the water pressure reference value falls; and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

[0017] In one embodiment, the controller is specifically configured to increment the cumulative occurrence count of the corresponding situation by 1 when the second comparison result is that the flushing flow rate value is not greater than the second start flushing flow rate; and to control the flushing device to flush the pre-filter when the cumulative occurrence count is greater than a preset number.

[0018] Secondly, this application also provides a method for controlling a water purifier. The method includes:

[0019] Obtain the water pressure value at the inlet of the pre-filter and the water flow rate value at the outlet of the water purification branch;

[0020] Based on the water pressure value, a water pressure reference value is determined; the water pressure reference value is the average value of the water pressure values ​​detected during a first preset detection period when no water is taken.

[0021] Based on the water pressure reference value, obtain the first start-up flushing flow rate value;

[0022] The outflow rate value is compared with the first start-up flushing flow rate value to obtain a first comparison result;

[0023] Based on the first comparison result, the pre-filter element is controlled to be flushed.

[0024] Thirdly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the above-described method.

[0025] Fourthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the steps of the method described above.

[0026] The aforementioned water purifier, water purifier control method, storage medium, and computer program product determine a water pressure reference value based on the water pressure value detected by the pressure detection device; obtain a first start-up flushing flow rate value based on the water pressure reference value before water intake; and achieve more precise control of the flushing device to flush the pre-filter under different water pressures based on the water flow rate value during water intake and the first start-up flushing flow rate value, thus avoiding situations such as failure to flush in time or wasted flushing water, thereby extending the service life of the pre-filter. Attached Figure Description

[0027] Figure 1 This is a structural block diagram of a water purifier in one embodiment;

[0028] Figure 2 This is a structural diagram showing the location of the second flow detection device in a water purifier in one embodiment;

[0029] Figure 3 A structural diagram showing the location of the second flow detection device in a water purifier in another embodiment;

[0030] Figure 4 This is a structural diagram showing the location of the second flow detection device in a water purifier in yet another embodiment;

[0031] Figure 5 This is a flowchart illustrating a water purifier control method in one embodiment;

[0032] Figure 6 This is a flowchart illustrating the water purifier control method in another embodiment;

[0033] Figure 7 This is a flowchart illustrating the water purifier control method in yet another embodiment;

[0034] Figure 8 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0037] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0038] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0039] In traditional technology, filter cartridges are cleaned either manually or automatically. When automatic flushing is used, a flow meter detects the reduced flow rate to determine whether to activate it. However, due to variations in tap water pressure, the filter cartridge's outlet flow rate differs. When the tap water pressure is high, the outlet flow rate is also high, potentially causing the filter cartridge to fail to flush when it should. Conversely, when the tap water pressure is low, the outlet flow rate is low, leading to automatic flushing activating when it's unnecessary and wasting water.

[0040] To solve the above problems, a water purifier is provided, comprising:

[0041] The pressure detection device 102 is installed at the water inlet end of the pre-filter element and is used to detect the water pressure value at the water inlet end.

[0042] The pressure detection device 102 is installed in the water purifier at the inlet of the pre-filter cartridge. It is used to detect the pressure value of the water at the inlet, which is the inlet water pressure value. The inlet water pressure value includes the water pressure value during water intake and the water pressure value during non-water intake.

[0043] For example, the pressure detection device 102 can detect the water flowing through the inlet of the pre-filter in real time and obtain the corresponding water pressure value. The pressure detection device can be a pressure sensor, and its specific location can be set in the water flow branch of the raw water outlet, that is, the inlet of the pre-filter.

[0044] Specifically, when the pressure detection device is a pressure sensor, it is located at the inlet end of the filter element. When the water purifier is working, the raw water that needs to be filtered enters the water purifier through the raw water inlet. The pre-filter element in the water purifier filters the raw water, and the filtered wastewater flows out through the wastewater outlet, while the remaining water flows out through the purified water branch.

[0045] The first flow detection device 104 is installed at the outlet end of the water purification branch and is used to detect the flow rate value at the outlet end.

[0046] The first flow detection device 104 is installed in the water purifier, and its position can be set at the outlet end of the water purification branch, for detecting the outlet flow rate of the water purification branch. Specifically, the first flow detection device can be a flow meter.

[0047] For example, the first flow detection device 104 detects the water flowing through the outlet of the water purification branch in real time to obtain the corresponding flow value.

[0048] The controller 106 is configured to acquire the water pressure value detected by the pressure detection device and the outflow rate value detected by the first flow detection device; determine a water pressure reference value based on the water pressure value; acquire a first start-up flushing flow rate value according to the water pressure reference value; compare the outflow rate value with the first start-up flushing flow rate value to obtain a first comparison result; and control the flushing device to flush the pre-filter according to the first comparison result; wherein the water pressure reference value is the average value of the water pressure values ​​detected cumulatively over a first preset time period when no water is drawn.

[0049] The water pressure value includes the water pressure value detected when no water is being drawn and the water pressure value detected when water is being drawn. The water pressure reference value can be obtained based on the water pressure value detected by the pressure detection device 102. The water pressure reference value is the average value of the water pressure values ​​detected cumulatively over a first preset time period when no water is being drawn. The first comparison result includes two cases: one is that the water flow rate is not greater than the first start flushing flow rate, and the other is that the water flow rate is greater than the first start flushing flow rate.

[0050] For example, the first preset duration can be an empirical value. This invention is not limited thereto.

[0051] Specifically, the controller 106 can be connected to the pressure detection device 102 and the first flow detection device 104. Based on the water pressure value detected by the pressure detection device 102, a water pressure reference value is determined; based on the water pressure reference value, a first start-up flushing flow value is obtained; the outlet flow value detected by the first flow detection device 104 is compared with the first start-up flushing flow value, and based on the first comparison result, it is determined whether to generate a control command to control the flushing device 108 to flush the pre-filter, thereby realizing the start-up flushing function of the filter in the water purifier.

[0052] The rinsing device 108 is used to rinse the pre-filter in response to the control command of the controller.

[0053] The flushing device 108 is a device that can flush the pre-filter cartridge in the water purifier. Specifically, the position of the flushing device in the water purifier can be set according to the actual situation, as long as it can achieve the purpose of flushing the pre-filter cartridge.

[0054] Specifically, the flushing device 108 can be connected to the controller 106 to respond to the control of the controller 106, thereby flushing the pre-filter in the water purifier.

[0055] In the aforementioned water purifier, the controller determines a water pressure reference value based on the water pressure value detected by the pressure detection device; it obtains the first start-up flushing flow rate value based on the water pressure reference value before water is drawn; and based on the water flow rate value during the water drawing process and the first start-up flushing flow rate value, it can more accurately control the flushing device to flush the pre-filter under different water pressures, avoiding situations such as failure to flush in time or wasted water during flushing, thereby extending the service life of the pre-filter.

[0056] In one embodiment, the water purifier further includes:

[0057] The second flow detection device is installed at the inlet or wastewater end of the reverse osmosis membrane filter element and is used to detect the flushing flow rate of the reverse osmosis membrane filter element.

[0058] The second flow detection device is installed in the water purifier, and its location can be at the inlet or wastewater end of the reverse osmosis membrane filter element. It is used to detect the flushing flow rate of the reverse osmosis membrane filter element. The flushing flow rate is the recorded flow rate of water required to perform the flushing process when the reverse osmosis membrane filter element is flushed. Specifically, the second flow detection device can be a flow meter.

[0059] The reverse osmosis membrane filter is the core component of a reverse osmosis water purifier. It receives the incoming water from the solenoid valve and pressure pump. The pressure pump applies pressure to the raw water, allowing water molecules and ionic minerals to pass through the membrane, resulting in potable water. However, most dissolved inorganic salts (including heavy metals), organic matter, bacteria, and viruses cannot pass through the membrane, becoming undrinkable wastewater.

[0060] In one example, if the water purifier includes two filter cartridges: a pre-filter and a reverse osmosis membrane filter, the second flow detection device can be located at either the inlet or wastewater end of the reverse osmosis membrane filter.

[0061] In another example, if the water purifier includes three filter cartridges: a pre-filter, a composite filter, and a reverse osmosis membrane filter, since the entire water circuit is essentially open during reverse osmosis membrane flushing, the second flow detection device can be positioned at the inlet end of the composite filter, or at the inlet or wastewater end of the reverse osmosis membrane filter, to detect the flushing flow rate of the reverse osmosis membrane filter. Specifically, refer to... Figure 2This diagram illustrates the structure of a water purifier, including a pressure sensor, a raw water inlet, a pre-filter, an inlet solenoid valve, a pressure stabilizing pump, a reverse osmosis membrane filter, a post-filter, a wastewater outlet, a purified water outlet, a purified water valve, a first flow meter, a second flow meter, a wastewater valve, a check valve, a high-pressure switch, and water flow branches between these components. The second flow meter is located at the inlet end of the composite filter.

[0062] For example, refer to Figure 3 The diagram shows the location of the second flow detection device (second flow meter) in another type of water purifier. The second flow detection device is located at the inlet end of the reverse osmosis membrane filter element.

[0063] refer to Figure 4 The diagram shows the location of the second flow detection device in another type of water purifier. The second flow detection device (second flow meter) is located at the wastewater end of the reverse osmosis membrane filter element.

[0064] Specifically, Figures 2 to 4 In the diagram, the first flow meter is the first flow detection device; the second flow meter is the second flow detection device; and the direction of the arrow indicates the direction of water flow.

[0065] The controller 106 is further configured to acquire the flushing flow rate value detected by the second flow detection device; acquire the second start-up flushing flow rate value according to the water pressure reference value; compare the flushing flow rate value with the second start-up flushing flow rate value to obtain a second comparison result; and control the flushing device to flush the pre-filter according to the second comparison result.

[0066] The second comparison result includes two cases: one is that the flushing flow rate is not greater than the second start-up flushing flow rate, and the other is that the flushing flow rate is not greater than the second start-up flushing flow rate.

[0067] Specifically, the controller 106 is also used to connect to the second flow detection device to obtain the flushing flow value detected by the second flow detection device; obtain the second start flushing flow value according to the water pressure reference value; compare the flushing flow value with the second start flushing flow value, and determine whether to generate a control command based on the comparison result, so as to control the flushing device 108 to flush the pre-filter, thereby realizing the start flushing function of the pre-filter in the water purifier.

[0068] In the above embodiment, the flushing flow rate value is obtained; a second start-up flushing flow rate value is obtained based on the water pressure reference value; the flushing flow rate value is compared with the second start-up flushing flow rate value to obtain a second comparison result. This enables a more accurate determination of whether to start flushing the pre-filter under different water pressures, avoiding situations such as failure to flush in time or wasted flushing water, thereby extending the service life of the pre-filter.

[0069] In one embodiment, the controller 106 is specifically used to obtain the correspondence between the water pressure reference value and the first start flushing flow rate value; determine the first preset water pressure range into which the water pressure reference value falls; and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

[0070] The controller 106 stores multiple sets of correspondences between first preset water pressure ranges and first start-up flushing flow rates. Specifically, the larger the pressure value in the first preset water pressure range, the larger the corresponding first start-up flushing flow rate.

[0071] In practical application, for example, four sets of correspondences between the first preset water pressure range and the first starting flushing flow rate value are established. For the first set, when the first preset water pressure range is greater than or equal to 0.4 MPa, the corresponding first starting flushing flow rate value is a1; for the second set, when the first preset water pressure range is less than 0.4 MPa but greater than or equal to 0.25 MPa, the corresponding first starting flushing flow rate value is a2; for the third set, when the first preset water pressure range is less than 0.25 MPa but greater than or equal to 0.15 MPa, the corresponding first starting flushing flow rate value is a3; and for the fourth set, when the first preset water pressure range is less than 0.15 MPa but greater than or equal to 0.1 MPa, the corresponding first starting flushing flow rate value is a4. Where a1 > a2 > a3 > a4, and a1, a2, a3, and a4 can be fixed values ​​set based on experience.

[0072] For example, if the water pressure at the inlet is consistently very low, indicating a low water pressure state, the flushing device can be controlled to flush the pre-filter when the cumulative purified water volume recorded by the flow meter reaches a set threshold.

[0073] In the above embodiment, the controller 106 determines the first preset water pressure range into which the water pressure reference value falls, and uses the first starting flushing flow rate value corresponding to the first preset water pressure range as the first starting flushing flow rate value corresponding to the water pressure reference value. Based on the correspondence between the first preset water pressure range and the first starting flushing flow rate value, it can accurately obtain the corresponding first starting flushing flow rate value under different water pressures.

[0074] In one embodiment, the controller 106 is specifically used to control the flushing device to flush the pre-filter when the first comparison result is that the outflow rate is not greater than the first start flushing flow rate.

[0075] The first comparison result includes two cases: one is that the outflow rate is not greater than the first start-up flushing flow rate, and the other is that the outflow rate is greater than the first start-up flushing flow rate.

[0076] In the above embodiment, when the outflow rate is not greater than the first start flushing flow rate, the controller 106 sends a control command to the flushing device to control the flushing device to flush the pre-filter cartridge. This can more accurately determine whether the filter cartridge flushing function needs to be started, achieving a more precise and intelligent start flushing function, reducing water waste and extending the service life of the pre-filter cartridge.

[0077] In one embodiment, the controller 106 is specifically used to obtain the correspondence between the water pressure reference value and the second start flushing flow rate value; determine the second preset water pressure range into which the water pressure reference value falls; and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

[0078] The controller 106 pre-stores multiple sets of correspondences between second preset water pressure ranges and second start-up flushing flow rates. Specifically, the larger the pressure value in the second preset water pressure range, the larger the corresponding second start-up flushing flow rate.

[0079] In practical application, for example, four sets of correspondences between the second preset water pressure range and the second start-up flushing flow rate are established. For the first set, when the second preset water pressure range is greater than or equal to 0.4 MPa, the corresponding second start-up flushing flow rate is b1; for the second set, when the second preset water pressure range is less than 0.4 MPa but greater than or equal to 0.25 MPa, the corresponding second start-up flushing flow rate is b2; for the third set, when the second preset water pressure range is less than 0.25 MPa but greater than or equal to 0.15 MPa, the corresponding second start-up flushing flow rate is b3; and for the fourth set, when the second preset water pressure range is less than 0.15 MPa but greater than or equal to 0.1 MPa, the corresponding second start-up flushing flow rate is b4. Here, b1 > b2 > b3 > b4, and b1, b2, b3, and b4 can be fixed values ​​set based on experience.

[0080] In the above embodiment, the controller 106 determines the second preset water pressure range into which the water pressure reference value falls, and uses the second start-up flushing flow rate value corresponding to the second preset water pressure range as the second start-up flushing flow rate value corresponding to the water pressure reference value. Based on the correspondence between the second preset water pressure range and the second start-up flushing flow rate value, it can accurately obtain the corresponding second start-up flushing flow rate value under different water pressures.

[0081] In one embodiment, the controller 106 is specifically configured to increment the cumulative occurrence count of the corresponding situation by 1 when the second comparison result is that the flushing flow rate value is not greater than the second start flushing flow rate; and to control the flushing device to flush the pre-filter when the cumulative occurrence count is greater than a preset number.

[0082] The second comparison result includes two cases: one is that the flushing flow rate is not greater than the second start-up flushing flow rate, and the other is that the flushing flow rate is not greater than the second start-up flushing flow rate.

[0083] For example, when the flushing flow rate is not greater than the second start flushing flow rate, the controller 106 increments the cumulative occurrence count of the corresponding situation by 1, so that when the cumulative occurrence count is greater than a preset number, the controller controls the flushing device to flush the pre-filter. Specifically, the preset number can be set based on empirical values, and this invention does not limit it.

[0084] In practice, the preset number of flushes is usually set to 3. That is, when the flushing flow rate of the reverse osmosis membrane filter element after 3 flushes is not greater than the second start flushing flow rate, the flushing of the pre-filter element is triggered, and then the cumulative number of flushes is reset to zero.

[0085] In the above embodiment, when the outflow rate is not greater than the first start flushing flow rate, the controller 106 increments the cumulative occurrence count of the corresponding situation by 1. When the cumulative occurrence count is greater than the preset count, the controller sends a control command to the flushing device to control the flushing device to flush the pre-filter. This can more accurately determine whether the filter flushing function needs to be started, achieving a more precise and intelligent start flushing function, reducing water waste, and extending the service life of the pre-filter.

[0086] In one embodiment, such as Figure 5 As shown, a water purifier control method is provided, including:

[0087] Step 502: Obtain the water pressure value at the inlet of the pre-filter and the water flow rate value at the outlet of the water purification branch.

[0088] A pressure detection device is installed at the inlet of the pre-filter in the water purifier to detect the water pressure. The water pressure at the inlet includes the water pressure during water intake and the water pressure during non-water intake. The pressure detection device can be a pressure sensor, and its specific location can be set in the water flow branch of the raw water outlet, that is, at the inlet of the pre-filter.

[0089] A flow detection device is installed at the outlet of the water purification branch of the water purifier. The flow detection device is used to detect the water flow rate at the outlet of the water branch.

[0090] Step 504: Based on the water pressure value, determine the water pressure reference value; the water pressure reference value is the average value of the water pressure values ​​detected during the first preset detection period when no water is taken.

[0091] The water pressure value includes the water pressure detected when no water is being drawn and the water pressure detected when water is being drawn. A water pressure reference value is obtained based on the water pressure values ​​detected by the pressure detection device. The water pressure reference value is the average of the water pressure values ​​detected over a first preset time period when no water is being drawn.

[0092] For example, the first preset duration can be an empirical value. This invention is not limited thereto.

[0093] Step 506: Obtain the first start-up flushing flow rate value based on the water pressure reference value.

[0094] For example, multiple sets of corresponding relationships can be preset in the water purifier to determine the corresponding first start flushing flow rate value based on the water pressure reference value.

[0095] Step 508: Compare the outflow rate with the first start-up flushing flow rate to obtain a first comparison result.

[0096] The first comparison result includes two cases: one is that the outflow rate is not greater than the first start-up flushing flow rate, and the other is that the outflow rate is greater than the first start-up flushing flow rate.

[0097] Step 510: Based on the first comparison result, control the pre-filter element to be rinsed.

[0098] In the above water purifier control method, a water pressure reference value is determined based on the water pressure value; the first start-up flushing flow rate value is obtained based on the water pressure reference value before water is drawn; and the pre-filter is flushed more accurately under different water pressures based on the water flow rate value during water drawing and the first start-up flushing flow rate value, thus avoiding situations such as failure to flush in time or wasted water during flushing, thereby extending the service life of the pre-filter.

[0099] In one embodiment, step 506 includes:

[0100] Step 5062: Obtain the correspondence between the water pressure reference value and the first start flushing flow rate value.

[0101] Step 5064: Determine the first preset water pressure range into which the water pressure reference value falls, and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

[0102] The water purifier stores multiple pre-set relationships between first preset water pressure ranges and first start-up flushing flow rates. Specifically, the higher the pressure value within the first preset water pressure range, the higher the corresponding first start-up flushing flow rate.

[0103] In the above embodiments, by determining the first preset water pressure range into which the water pressure reference value falls, the first starting flushing flow rate value corresponding to the first preset water pressure range is taken as the first starting flushing flow rate value corresponding to the water pressure reference value. Based on the correspondence between the first preset water pressure range and the first starting flushing flow rate value, it is applicable to accurately obtaining the corresponding first starting flushing flow rate value under different water pressures.

[0104] In one embodiment, step 510 includes:

[0105] Step 5102: If the first comparison result is that the outflow rate is not greater than the first start flushing flow rate, control the pre-filter to be flushed.

[0106] In this water purifier, the controller sends a control command to the flushing device when the outflow rate is not greater than the first start flushing flow rate. This controls the flushing device to flush the pre-filter, enabling more precise determination of whether the filter flushing function needs to be activated. This achieves a more accurate and intelligent start flushing function, reducing water waste and extending the service life of the pre-filter.

[0107] In one embodiment, reference Figure 6 This illustrates another method for controlling a water purifier, including:

[0108] Step 602: Obtain the flushing flow rate value of the reverse osmosis membrane filter element.

[0109] The flushing flow rate is the recorded flow rate of water required to perform the flushing process when the reverse osmosis membrane filter element is flushed. During reverse osmosis membrane flushing, the entire water circuit is essentially connected, so the location of the second flow detection device used to measure the flushing flow rate can be set according to the actual structure of the water purifier, ensuring that the flushing flow rate of the reverse osmosis membrane filter element can be detected.

[0110] Step 604: Obtain the second start-up flushing flow rate value based on the water pressure reference value.

[0111] Step 606: Compare the flushing flow rate value with the second start-up flushing flow rate value to obtain a second comparison result.

[0112] The second comparison result includes two cases: one is that the flushing flow rate is not greater than the second start-up flushing flow rate, and the other is that the flushing flow rate is not greater than the second start-up flushing flow rate.

[0113] Step 608: Based on the second comparison result, control the pre-filter element to be rinsed.

[0114] In the above embodiment, the flushing flow rate value is obtained; a second start-up flushing flow rate value is obtained based on the water pressure reference value; the flushing flow rate value is compared with the second start-up flushing flow rate value to obtain a second comparison result. This enables a more accurate determination of whether to start flushing the pre-filter under different water pressures, avoiding situations such as failure to flush in time or wasted flushing water, thereby extending the service life of the pre-filter.

[0115] In one embodiment, step 604 includes:

[0116] Step 6042: Obtain the correspondence between the water pressure reference value and the second start flushing flow rate value.

[0117] Step 6044: Determine the second preset water pressure range into which the water pressure reference value falls, and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

[0118] The water purifier stores multiple pre-set relationships between second preset water pressure ranges and second start-up flushing flow rates. Specifically, the higher the pressure value within the second preset water pressure range, the higher the corresponding second start-up flushing flow rate.

[0119] In the above embodiments, by determining the second preset water pressure range into which the water pressure reference value falls, the second starting flushing flow rate value corresponding to the second preset water pressure range is used as the second starting flushing flow rate value corresponding to the water pressure reference value. Based on the correspondence between the second preset water pressure range and the second starting flushing flow rate value, this method can accurately obtain the corresponding second starting flushing flow rate value under different water pressures.

[0120] In one embodiment, step 608 includes:

[0121] Step 6082: If the second comparison result is that the flushing flow rate is not greater than the second start flushing flow rate, increment the cumulative occurrence count of the corresponding situation by 1; if the cumulative occurrence count is greater than the preset count, control the pre-filter to be flushed.

[0122] The second comparison result includes two cases: one is that the flushing flow rate is not greater than the second start-up flushing flow rate, and the other is that the flushing flow rate is not greater than the second start-up flushing flow rate.

[0123] For example, when the flushing flow rate is not greater than the second start flushing flow rate, the cumulative occurrence count of the corresponding situation is incremented by 1. If the cumulative occurrence count is greater than a preset number, the pre-filter element is controlled to be flushed. Specifically, the preset number can be set based on empirical values, and this invention does not limit it.

[0124] In the above embodiments, by observing the flushing status of the reverse osmosis membrane filter element, it is possible to more accurately determine whether the filter element flushing function needs to be activated, thereby achieving a more precise and intelligent activation of the flushing function, reducing water waste, and extending the service life of the pre-filter element.

[0125] To better understand the complete process of water purifier control in the embodiments of the present invention, a complete example is provided for illustration. (Refer to...) Figure 7 The diagram illustrates a flow chart of the water purifier control in yet another embodiment, including the following steps:

[0126] Step 702: Obtain the water pressure value at the inlet of the pre-filter and the water flow rate value at the outlet of the water purification branch.

[0127] Step 704: Determine the water pressure reference value based on the water pressure reference value.

[0128] Specifically, the water pressure reference value is the average value of the water pressure detected over a first preset time period when no water is drawn.

[0129] Step 706: Obtain the correspondence between the water pressure reference value and the first start flushing flow rate value; determine the first preset water pressure range into which the water pressure reference value falls, and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

[0130] Step 708: Compare the outflow rate with the first start-up flushing flow rate. If the outflow rate is not greater than the first start-up flushing flow rate, control the pre-filter to be flushed.

[0131] Step 710: Obtain the flushing flow rate value of the reverse osmosis membrane filter element.

[0132] Step 712: Obtain the correspondence between the water pressure reference value and the second start flushing flow rate value; determine the second preset water pressure range into which the water pressure reference value falls, and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

[0133] Step 714: Compare the flushing flow rate value with the second start flushing flow rate value. If the flushing flow rate value is not greater than the second start flushing flow rate value, increment the cumulative occurrence count of the corresponding situation by 1. If the cumulative occurrence count is greater than the preset count, control the pre-filter to be flushed.

[0134] In this embodiment, a water pressure reference value is determined based on the water pressure value; a first start-up flushing flow rate value is obtained based on the water pressure reference value before water intake; and the pre-filter is flushed more accurately under different water pressures based on the outflow flow rate value during water intake and the first start-up flushing flow rate value, thus avoiding situations such as failure to flush in time or wasted water during flushing, thereby extending the service life of the pre-filter.

[0135] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0136] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 8As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores water pressure values ​​detected by a pressure detection device, outlet water flow values ​​detected by a first flow detection device, and flushing flow values ​​detected by a second flow detection device. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a water purifier control method.

[0137] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0138] In one embodiment, a computer device is provided, which may be a controller in a water purifier, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the water purifier control method of the above embodiments.

[0139] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the water purifier control method of the above embodiments.

[0140] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0141] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0142] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0143] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A water purifier, characterized in that, The water purifier includes: A pressure detection device is installed at the inlet end of the pre-filter cartridge to detect the water pressure value at the inlet end; wherein, the pre-filter cartridge in the water purifier filters the raw water, the filtered wastewater flows out from the wastewater outlet, and the remaining water flows out from the purified water branch. The first flow detection device is installed at the outlet end of the water purification branch and is used to detect the flow rate value at the outlet end. The controller is configured to acquire the water pressure value detected by the pressure detection device and the outflow rate value detected by the first flow detection device; determine a water pressure reference value based on the water pressure value; acquire a first start-up flushing flow rate value based on the water pressure reference value; compare the outflow rate value with the first start-up flushing flow rate value to obtain a first comparison result; and control the flushing device to flush the pre-filter element based on the first comparison result; wherein the water pressure reference value is the average value of the water pressure values ​​detected cumulatively over a first preset time period when no water is being drawn. A rinsing device is used to rinse the pre-filter in response to a control command from the controller.

2. The water purifier according to claim 1, characterized in that, Also includes: The second flow detection device is installed at the inlet or wastewater end of the reverse osmosis membrane filter element and is used to detect the flushing flow rate of the reverse osmosis membrane filter element. The controller is further configured to acquire the flushing flow rate value detected by the second flow detection device; acquire the second start-up flushing flow rate value based on the water pressure reference value; and compare the flushing flow rate value with the second start-up flushing flow rate value to obtain a second comparison result. Based on the second comparison result, the flushing device is controlled to flush the pre-filter.

3. The water purifier according to claim 1, characterized in that, The controller is specifically used to obtain the correspondence between the water pressure reference value and the first start flushing flow rate value; determine the first preset water pressure range into which the water pressure reference value falls; and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

4. The water purifier according to claim 1, characterized in that, The controller is specifically used to control the flushing device to flush the pre-filter when the first comparison result is that the outflow rate is not greater than the first start-up flushing flow rate.

5. The water purifier according to claim 2, characterized in that, The controller is specifically used to obtain the correspondence between the water pressure reference value and the second start flushing flow rate value; determine the second preset water pressure range into which the water pressure reference value falls; and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

6. The water purifier according to claim 2, characterized in that, The controller is specifically configured to increment the cumulative occurrence count of the corresponding situation by 1 when the second comparison result is that the flushing flow rate value is not greater than the second start flushing flow rate; and to control the flushing device to flush the pre-filter when the cumulative occurrence count is greater than a preset number.

7. A water purifier control method, characterized in that, The method includes: Obtain the water pressure value at the inlet of the pre-filter and the water flow rate value at the outlet of the water purification branch; wherein, the pre-filter in the water purifier filters the raw water, the filtered wastewater flows out from the wastewater outlet, and the remaining water flows out from the water purification branch. Based on the water pressure value, a water pressure reference value is determined; the water pressure reference value is the average value of the water pressure values ​​detected during a first preset detection period when no water is taken. Based on the water pressure reference value, obtain the first start-up flushing flow rate value; The outflow rate value is compared with the first start-up flushing flow rate value to obtain a first comparison result; Based on the first comparison result, the pre-filter element is controlled to be flushed.

8. The method according to claim 7, characterized in that, The method further includes: Obtain the flushing flow rate value of the reverse osmosis membrane filter element; Based on the water pressure reference value, obtain the second start-up flushing flow rate value; The flushing flow rate value is compared with the second start-up flushing flow rate value to obtain a second comparison result; Based on the second comparison result, the pre-filter element is controlled to be flushed.

9. The method according to claim 7, characterized in that, The step of obtaining the first start-up flushing flow rate value based on the water pressure reference value includes: Obtain the correspondence between the water pressure reference value and the first start flushing flow rate value; Determine the first preset water pressure range into which the water pressure reference value falls, and take the first start flushing flow rate value corresponding to the first preset water pressure range as the first start flushing flow rate value corresponding to the water pressure reference value.

10. The method according to claim 7, characterized in that, The step of controlling the rinsing of the pre-filter element based on the first comparison result includes: If the first comparison result indicates that the outflow rate is not greater than the first start-up flushing flow rate, the pre-filter element is controlled to be flushed.

11. The method according to claim 8, characterized in that, The step of obtaining the second start-up flushing flow rate value based on the water pressure reference value includes: Obtain the correspondence between the water pressure reference value and the second start flushing flow rate value; Determine the second preset water pressure range into which the water pressure reference value falls, and take the second start flushing flow rate value corresponding to the second preset water pressure range as the second start flushing flow rate value corresponding to the water pressure reference value.

12. The method according to claim 8, characterized in that, The step of controlling the rinsing of the pre-filter element based on the second comparison result includes: If the second comparison result indicates that the flushing flow rate is not greater than the second start flushing flow rate, the cumulative occurrence count of the corresponding situation is incremented by 1; if the cumulative occurrence count is greater than the preset count, the pre-filter is flushed.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the water purifier control method according to any one of claims 7 to 12.

14. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the water purifier control method according to any one of claims 7 to 12.

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