Water purification component of household appliance and control method thereof, household appliance

Abstract

The present application relates to the field of electrodialysis technology and provides a water purification component for a household appliance, a control method thereof, and a household appliance. The water purification component of the household appliance includes: a water purification module disposed on the main waterway of the water purification component; a cleaning component disposed upstream of the water purification module, the cleaning component being used to place laundry and selectively connected to the main waterway where the water purification module is located; the cleaning component being adapted to be connected to a power supply in a switchable manner. The water purification component of the household appliance provided in the embodiments of the present application can reduce scale on the water purification module and improve water purification performance.

Description

Technical Field

[0001] The present application relates to the technical field of electrodialysis, and in particular to a water purification component of a household appliance, a control method thereof, and the household appliance. Background Art

[0002] In order to improve water safety, electrodialysis is used in related technologies to achieve water purification. Specifically, a large number of ions in the water are adsorbed by the electrodialysis membrane stack in the water purification module, thereby purifying the water quality.

[0003] However, during the water purification process, one end of the electrodialysis membrane stack of the water purification module will adsorb a large amount of ions, such as calcium and magnesium ions. Therefore, long-term water purification will lead to the formation of scale such as calcium carbonate and magnesium carbonate on the electrodialysis membrane stack of the water purification module, causing the membrane stack to be blocked and under pressure, thereby causing the water purification capacity to decrease or even lose the water purification capacity, resulting in poor water purification effect. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a water purification component for a household appliance, which can reduce scale on the water purification module and improve the water purification effect.

[0005] The present application also proposes a method for controlling a water purification component of a household appliance.

[0006] The present application also provides a household appliance.

[0007] The present application also provides an electronic device.

[0008] The present application also provides a computer-readable storage medium.

[0009] The present application also proposes a computer program product.

[0010] According to the first embodiment of the present application, a water purification component of a household appliance includes:

[0011] A water purification module provided on the main water channel of the water purification assembly;

[0012] A cleaning component is provided upstream of the water purification module, the cleaning component is used to put in laundry, and the cleaning component can be selectively connected to the main water channel where the water purification module is located;

[0013] The cleaning component is adapted to be connected to a power supply in an on-off manner.

[0014] The water purification component of the household appliance provided in the embodiment of the present application is configured such that a cleaning component is arranged upstream of the water purification module so that when scale appears on the electrodialysis membrane stack in the water purification module, the electrodialysis membrane stack in the water purification module can be cleaned by the cleaning component, thereby reducing the scale on the water purification module and improving the water purification effect.

[0015] According to one embodiment of the present application, the cleaning component includes a storage container for placing laundry and a first valve;

[0016] The storage container is arranged on a branch upstream of the water purification module and connected to the main waterway where the water purification module is located;

[0017] The first valve is arranged on the water inlet of the storage container.

[0018] According to one embodiment of the present application, it further includes:

[0019] a current detector connected to the water purification module to detect the current value of any electrodialysis membrane stack in the water purification module;

[0020] a controller, configured to obtain, through the current detector, first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage, and, if any of the first current values ​​is outside a preset range, activate the cleaning component to clean the corresponding working electrodialysis membrane stack;

[0021] Wherein, the working electrodialysis membrane stack is the electrodialysis membrane stack in the water purification module to which the preset voltage is applied.

[0022] According to one embodiment of the present application, the controller is further configured to:

[0023] A second current value of the cleaned working electrodialysis membrane stack is obtained, and it is determined that the second current value is outside a preset range, and the corresponding working electrodialysis membrane stack switching electrode is controlled.

[0024] According to one embodiment of the present application, the controller is further configured to:

[0025] Obtaining a third current value of the working electrodialysis membrane stack at a preset voltage after switching electrodes;

[0026] It is determined that the third current value is outside the preset range, and it is determined that the electrode of the working electrodialysis membrane stack is abnormal. A prompt message is generated according to the unique serial number of the working electrodialysis membrane stack with the abnormal electrode.

[0027] According to one embodiment of the present application, the controller is further configured to:

[0028] The working electrodialysis membrane stack with abnormal electrodes is turned off, and the power supply is controlled to apply the preset voltage to the standby electrodialysis membrane stack in the water purification module, and the standby electrodialysis membrane stack working under the preset voltage is calibrated as the working electrodialysis membrane stack.

[0029] According to one embodiment of the present application, it further includes:

[0030] a water channel switching component connected to the water outlet side of the water purification module and used to switch the water channel downstream of the water purification module;

[0031] The controller is further configured to control the water channel switching component to switch the water channel downstream of the water purification module when controlling the corresponding working electrodialysis membrane stack to switch electrodes.

[0032] According to one embodiment of the present application, it further includes:

[0033] A first detector is used to detect the total dissolved solids value of the water entering the water purification module to determine the TDS of the water;

[0034] A second detector is used to detect the total dissolved solids value of the water output from the water purification module to determine the output water TDS;

[0035] The controller is specifically configured to determine a cleaning time according to the inlet water TDS and the outlet water TDS, so as to control the cleaning component to clean the water purification module according to the cleaning time.

[0036] According to one embodiment of the present application, it further includes:

[0037] a water tank, wherein the water inlet of the water tank is connected to the soft water channel downstream of the water purification module;

[0038] The second valve is arranged on the water inlet of the water tank.

[0039] A household appliance according to an embodiment of the second aspect of the present application includes:

[0040] A water purification component for a household appliance as described in any of the above embodiments.

[0041] A method for controlling a water purification component of a household appliance according to an embodiment of the third aspect of the present application is applied to the water purification component of the household appliance as described in the above embodiment, including:

[0042] Obtaining first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage;

[0043] determining that any of the first current values ​​is outside a preset range, starting the cleaning component to clean the corresponding working electrodialysis membrane stack;

[0044] Wherein, the working electrodialysis membrane stack is the electrodialysis membrane stack in the water purification module to which the preset voltage is applied.

[0045] According to the electronic device of the fourth embodiment of the present application, it includes a processor and a memory storing a computer program, and when the processor executes the computer program, it implements the control method of the water purification component of the household appliance described in any of the above embodiments.

[0046] According to the computer-readable storage medium of the fifth embodiment of the present application, a computer program is stored thereon, and when the computer program is executed by a processor, the control method of the water purification component of the household appliance described in any of the above embodiments is implemented.

[0047] According to the computer program product of the sixth embodiment of the present application, it includes a computer program, which, when executed by a processor, implements the control method of the water purification component of a household appliance described in any of the above embodiments.

[0048] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0049] By arranging a cleaning component upstream of the water purification module, when scale appears in the electrodialysis membrane stack in the water purification module, the electrodialysis membrane stack in the water purification module can be cleaned by the cleaning component, thereby reducing the scale on the water purification module and improving the water purification effect.

[0050] Furthermore, by turning on the cleaning component to clean the working electrodialysis membrane stack when it is detected that the current of the working electrodialysis membrane stack is outside the preset range, the cleaning component can be effectively controlled to remove scale by utilizing the characteristic that scaling of the electrodialysis membrane stack will increase or decrease the current, thereby improving the descaling efficiency.

[0051] Furthermore, by switching the electrodes of the cleaned working electrodialysis membrane stack and then detecting the current value of the working electrodialysis membrane stack, electrodialysis membrane stacks with abnormal electrodes can be effectively discovered, thereby improving water safety.

[0052] Furthermore, the inlet TDS and outlet TDS are used to determine the cleaning time, thereby improving the cleaning efficiency of the water purification module. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0054] Figure 1 This is a schematic structural diagram of a water purification component of a household appliance provided in an embodiment of the present application;

[0055] Figure 2 This is a schematic diagram of the connection structure between each electrodialysis membrane stack and the power supply provided in the embodiment of the present application;

[0056] Figure 3 This is a structural diagram of a water purification component of a household appliance provided in another embodiment of the present application;

[0057] Figure 4 This is a structural diagram of a water purification component of a household appliance provided in yet another embodiment of the present application;

[0058] Figure 5 This is a schematic structural diagram of a water purification component of a household appliance provided in another embodiment of the present application;

[0059] Figure 6 This is a structural diagram of a water purification component of a household appliance provided in another embodiment of the present application;

[0060] Figure 7 1 is a flow chart of a method for controlling a water purification component of a household appliance provided in an embodiment of the present application;

[0061] Figure 8 It is a structural diagram of an electronic device provided in an embodiment of the present application.

[0062] Among them, 1. Water purification module; 2. Cleaning components; 3. Electrodialysis membrane stack; 4. Storage container; 5. First valve; 6. Current detector; 7. Water channel switching component; 8. First detector; 9. Second detector; 11. First water chamber; 12. Second water chamber; 13. First reversing valve; 14. Second reversing valve; 15. First flow limiting valve; 16. Second flow limiting valve; 100. Power supply; 200. Second valve; 300. Water tank. DETAILED DESCRIPTION

[0063] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0064] In order to better understand the solution, the professional terms involved in the embodiments of this application are first explained.

[0065] The electrodialysis membrane stack is composed of multiple anion and cation exchange membranes. Under the action of an external DC electric field, the selective permeability of the ion exchange membrane to ions in the solution is used to cause ion migration of anions and cations in the solution. The anion and cation exchange membranes are passed through the two membranes to achieve the purpose of desalination or concentration of the water, thereby purifying the water.

[0066] Below, the water purification component of the household appliance and its control method, and the household appliance provided in the embodiments of the present application will be introduced and explained in detail through several specific embodiments.

[0067] like Figure 1As shown, in one embodiment, a water purification component of a household appliance is provided, comprising:

[0068] A water purification module 1 is provided on the main water channel of the water purification assembly;

[0069] A cleaning component 2 is provided upstream of the water purification module 1, and is used to place laundry. The cleaning component 2 can be optionally connected to the main water channel where the water purification module 1 is located;

[0070] The cleaning component 2 is adapted to be connected to and disconnected from the power supply 100 .

[0071] In one embodiment, the water purification module 1 can be composed of one or more electrodialysis membrane stacks 3. Considering that in the electrodialysis membrane stack, the voltage that each pair of membranes withstands is certain, if the number of membranes in the electrodialysis membrane stack needs to be increased to improve performance, the voltage applied to the electrodialysis membrane stack needs to be increased accordingly. However, when using an electrodialysis membrane stack to purify water in household appliances, the voltage cannot be increased due to the limited operating voltage of the household appliances. Therefore, in some embodiments, a plurality of electrodialysis membrane stacks 3 can be connected in series to form the water purification module 1, and the electrodialysis membrane stacks 3 can be connected in parallel to the power supply 100, so that the same voltage can be used for multiple electrodialysis membrane stacks to purify water at the same time, thereby enhancing the filtration effect without increasing the voltage, and thus improving the water purification effect when the voltage applied to the electrodialysis membrane stack is limited.

[0072] In one embodiment, the connection diagram between each electrodialysis membrane stack 3 and the power supply 100 is as follows: Figure 2 As shown, the electrodialysis membrane stacks 3 are arranged in sequence, and at the same time, the electrodialysis membrane stacks 3 are connected in parallel to the power supply 100, so that the power supply 100 can control multiple electrodialysis membrane stacks 3 to perform water purification through the same voltage.

[0073] In one embodiment, during water production, the power supply 100 applies voltage to each electrodialysis membrane stack 3. The first electrodialysis membrane stack 3 in the water purification module 1 receives raw water and purifies the raw water through electrodialysis technology, producing purified water with adjustable TDS (Total Dissolved Solids). This water has the advantages of adjustable freshwater quality, high recovery rate, and a purified water output ratio of up to 90%. The electrodialysis membrane stack is an electrochemical water purification module composed of ion exchange membranes, flow channels, and electrodes. Ions are driven by the electric field to move in a directional manner. The selective permeation of the ion exchange membranes causes separation of concentrated and fresh water, resulting in wastewater and soft water. Under the action of the electric field, the orderly arrangement of the anion and cation exchange membranes divides the electrodialysis membrane stack into an ordered purified water chamber and a concentrated water chamber. Soft water enters the purified water chamber, while wastewater enters the concentrated water chamber. In the water path of the water purification component, the soft water path connects to the purified water chamber, and the wastewater path connects to the concentrated water chamber. After passing through the first electrodialysis membrane stack 3 for purification treatment on the waterway, the raw water treated by the first electrodialysis membrane stack 3 flows along the waterway to the next electrodialysis membrane stack 3 for purification treatment, and so on. Finally, the soft water treated by the water purification module 1 is transported to the water storage equipment for storing soft water through the soft water channel, and the wastewater obtained after purification treatment is discharged through the wastewater waterway.

[0074] In some embodiments, the voltage polarity on the same side of each electrodialysis membrane stack 3 is the same. Figure 1 As shown, each electrodialysis membrane stack 3 has an upper electrode and a lower electrode. After voltage is applied to each electrodialysis membrane stack 3, the upper electrodes of each electrodialysis membrane stack 3 have the same polarity, such as all are positive electrodes, and the lower electrodes of each electrodialysis membrane stack 3 have the same polarity, such as all are negative electrodes. In this way, the purified water chambers or concentrated water chambers of each electrodialysis membrane stack 3 are on the same side.

[0075] When the water purification module 1 includes multiple electrodialysis membrane stacks 3, in order to avoid confusion between the soft water waterway and the wastewater waterway of the water purification component, in one embodiment, the purified water chambers between the electrodialysis membrane stacks 3 are connected, and the concentrated water chambers between the electrodialysis membrane stacks 3 are connected. In this way, when each electrodialysis membrane stack 3 is performing water purification, in each electrodialysis membrane stack 3, except for the first electrodialysis membrane stack 3 in the waterway, the purified water chambers of the remaining electrodialysis membrane stacks 3 will only receive soft water obtained after purification treatment by the previous electrodialysis membrane stack 3, and the concentrated water chambers will only receive wastewater obtained after purification treatment by the previous electrodialysis membrane stack 3, thereby avoiding confusion between the soft water waterway and the wastewater waterway of the water purification component and improving the water purification effect.

[0076] To prevent the voltage applied to a particular electrodialysis membrane stack from interfering with the remaining electrodialysis membrane stacks, in one embodiment, an insulating separator may be provided between the electrodes of any two adjacent electrodialysis membrane stacks. In two adjacent electrodialysis membrane stacks 3, the first electrodialysis membrane stack has a first electrode and a second electrode, while the second electrodialysis membrane stack has a third electrode and a fourth electrode. Water enters the first electrodialysis membrane stack 3 from the side end and reaches the second electrode. The second and third electrodes are separated by an insulating separator. Water flows from the third electrode to the fourth electrode and then flows out. During operation, the two membrane stacks are simultaneously controlled by a power supply. When the first electrode is negative, the second electrode is positive, and the two membrane stacks are identical. At this time, the third electrode is negative and the fourth electrode is positive.

[0077] In one embodiment, any two adjacent electrodialysis membrane stacks can share the same electrode. Specifically, in two adjacent electrodialysis membrane stacks 3, the first electrodialysis membrane stack has a first and second electrode, while the second electrodialysis membrane stack has a third and fourth electrode. The second and third electrodes serve as common electrodes. Water flows from the first side electrode into the preceding electrodialysis membrane stack 3, then reaches the common electrode, then from the common electrode to the fourth electrode, before flowing out.

[0078] In one embodiment, the cleaning component 2 is arranged upstream of the water purification module 1, and the cleaning component 2 is provided with a medium introduction port. The cleaning component 2 can be pre-loaded with washings, or when needed, for example, when the electrodialysis membrane stack 3 in the water purification module 1 needs to be cleaned, the washings can be immediately introduced into the cleaning component 2 through the medium introduction port. When cleaning the electrodialysis membrane stack 3 in the water purification module 1, the cleaning component 2 is turned on, so that the washings introduced into the cleaning component are merged into the main water channel, and the water flow through the main water channel sequentially impacts each electrodialysis membrane stack 3 in the water purification module 1, thereby flushing the electrodialysis membrane stack 3. The washings can be citric acid powder. During cleaning, the citric acid powder dissolves under the impact of the water flow, producing acidic water, which flows along the main water channel to the water purification module 1, flushing each electrodialysis membrane stack 3 in the water purification module 1, and then removing the scale on the electrodialysis membrane stack 3.

[0079] By arranging a cleaning component upstream of the water purification module, when scale appears in the electrodialysis membrane stack in the water purification module, the electrodialysis membrane stack in the water purification module can be cleaned by the cleaning component, thereby reducing the scale on the water purification module and improving the water purification effect.

[0080] In one embodiment, if Figure 3 As shown, the cleaning component 2 includes a storage container 4 for placing washings and a first valve 5;

[0081] The storage container 4 is arranged on the branch upstream of the water purification module 1 and connected to the main waterway where the water purification module 1 is located;

[0082] The first valve 5 is arranged on the water inlet of the storage container 4 .

[0083] In one embodiment, since the main waterway is used to transport raw water to the water purification module for purification during daily water purification, to prevent laundry in storage container 4 from entering the water purification module along with the raw water during water purification, thereby affecting water safety, the storage container 4 can be placed on a branch of the main waterway. When the water purification module is purifying water, the first valve 5 is closed. At this time, the raw water directly enters the water purification module through the main waterway for filtration and does not enter the storage container 4. This ensures that laundry does not enter the water purification module during the water purification process, thereby improving water safety. When the electrodialysis membrane stack 3 in the water purification module 1 needs to be cleaned, the first valve 5 is opened. At this time, raw water enters the storage container 4 through the first valve 5, carrying away laundry, such as citric acid powder, that has been pre-stored or added to the storage container 4 in real time. The raw water is dissolved under the impact of the water flow, producing acidic water. The acidic water then flows into the main waterway from the water outlet of the storage container 4 and enters the water purification module 1 along the main waterway to clean scale on the electrodialysis membrane stack 3.

[0084] In one embodiment, the water purification component further includes a controller (not shown), wherein the controller may be a single chip microcomputer or a terminal device. The controller may be used to set the cleaning time of the water purification module and control the opening or closing of the cleaning component according to the set cleaning time. Among them, the cleaning time of the water purification module may be pre-set, such as 10 minutes, 20 minutes or 30 minutes. In certain embodiments, multiple cleaning time gears may be pre-set, such as a cleaning time of 10 minutes corresponding to the first gear and a cleaning time of 20 minutes corresponding to the second gear. The user may select the corresponding cleaning gear to clean the water purification module as needed, thereby improving the flexibility of the cleaning control of the water purification module.

[0085] In one embodiment, the controller can also control the power supply 100 to apply voltage to the electrodialysis membrane stacks 3. Considering that if there are multiple electrodialysis membrane stacks 3 in the water purification module, and that it is sometimes not necessary to activate all of them to achieve optimal water purification results during the water purification process, the controller can control a corresponding number of electrodialysis membrane stacks 3 to operate according to the water purification requirements. For example, if there are N electrodialysis membrane stacks in the water purification module 1, the controller can directly control the power supply to apply voltage to a fixed number, such as two, of the N electrodialysis membrane stacks 3, so that only two of the N electrodialysis membrane stacks 3 are activated as working electrodialysis membrane stacks for water purification. The remaining electrodialysis membrane stacks 3 can serve as standby electrodialysis membrane stacks. When a higher purification effect is required, such as when the user selects a higher purification level, the power supply can be controlled to apply a preset voltage to a corresponding number of standby electrodialysis membrane stacks, causing them to operate as working electrodialysis membrane stacks. Where N>2. Alternatively, the controller may pre-store a correspondence between multiple numerical intervals and the number of electrodialysis membrane stacks that are turned on. The controller may obtain the total dissolved solids value of the raw water flowing into the purification module 1, and determine the number of electrodialysis membrane stacks that need to be turned on based on the numerical interval to which the total dissolved solids value of the obtained raw water belongs, so as to control the power supply to apply voltage to the corresponding number of electrodialysis membrane stacks, so that they can act as working electrodialysis membrane stacks to perform purification work.

[0086] When the electrodialysis membrane stack is fouled, the current of the electrodialysis membrane stack will increase or decrease under the premise of applying the same preset voltage to the electrodialysis membrane stack. Therefore, in one embodiment, Figure 3 As shown, it also includes:

[0087] a current detector 6 connected to the water purification module 1 to detect the current value of any electrodialysis membrane stack 3 in the water purification module 1;

[0088] The controller is further configured to obtain, through the current detector 6, first current values ​​of the working electrodialysis membrane stacks in the water purification module 1 at a preset voltage, and to activate the cleaning component to clean the water purification module 1 if any first current value is outside a preset range;

[0089] The working electrodialysis membrane stack is the electrodialysis membrane stack 3 in the water purification module 1 to which a preset voltage is applied.

[0090] In one embodiment, each of the electrodialysis membrane stacks 3 in the water purification module 1 is connected to a current detector 6, and one current detector 6 is used to obtain the current value of a corresponding electrodialysis membrane stack. The current detector can be a current sensor. When the power supply applies a preset voltage to the electrodialysis membrane stack 3, the current detector 6 can directly obtain the current value of the electrodialysis membrane stack. Alternatively, the current detector 6 can also be an electric field strength sensor. The electric field strength sensor can be used to sense the intensity of the electric field formed by the power supply through the electrodes in the electrodialysis membrane stack 3, thereby obtaining the current of the electrodialysis membrane stack 3 through the intensity of the electric field. After the current detector 6 obtains the current of the electrodialysis membrane stack 3 connected thereto, the current of the electrodialysis membrane stack 3 is sent to the controller. When the current detector 6 detects an electrodialysis membrane stack to which a preset voltage is applied by the power supply, that is, a working electrodialysis membrane stack, the current value detected by it is a first current value.

[0091] In one embodiment, the controller is configured to, after receiving a first current value from the working electrodialysis membrane stack via the current detector 6, compare the first current value with a preset range, and determine an electrode detection result of the working electrodialysis membrane stack based on the comparison result, thereby determining whether the working electrodialysis membrane stack is fouled and, further, whether the purification efficiency of the working electrodialysis membrane stack is affected. The preset range can be a preset value, such as 1.45A, or a preset interval, such as [1.45A, 1.50A].

[0092] In one embodiment, when the electrodialysis membrane stack 3 operates for a long time, electrode scaling may occur, affecting the ionization effect and reducing the purification efficiency of the electrodialysis membrane stack. Furthermore, due to electrode scaling, the current of the electrodialysis membrane stack may increase or decrease under the premise of applying the same preset voltage to the electrodialysis membrane stack. Therefore, it can be seen that under the premise of applying the same voltage, after obtaining the first current value of the working electrodialysis membrane stack, the first current value can be compared with a preset range to determine whether the current of the working electrodialysis membrane stack is too large or too small. If it is greater than the preset range, it is determined that the current is too large, and it can be determined that the working electrodialysis membrane stack may be scaled. At this time, the controller can control the cleaning component to activate, allowing the washing to flow into the water purification module 1 along with the water flow, thereby cleaning the working electrodialysis membrane stack and removing the scale on the working electrodialysis membrane stack. At the same time, since the washing flow passes through the water purification module 1, when there are multiple electrodialysis membrane stacks 3 in the water purification module 1, all electrodialysis membrane stacks 3 can also be cleaned simultaneously.

[0093] By starting the cleaning component to clean the working electrodialysis membrane stack when it is detected that the current of the working electrodialysis membrane stack is outside the preset range, the cleaning component is used to clean the working electrodialysis membrane stack. The characteristic that scaling of the electrodialysis membrane stack will increase or decrease the current is utilized to effectively control the cleaning component to remove scale, thereby improving the descaling efficiency.

[0094] Taking into account that scale may remain when the working electrodialysis membrane stack is cleaned, the water purification effect may still not be optimal. Therefore, in one embodiment, the controller is also used to obtain the second current value of the working electrodialysis membrane stack after cleaning the working electrodialysis membrane stack whose first current value is outside the preset range, determine that the second current value is outside the preset range, and control the corresponding working electrodialysis membrane stack to switch the electrode.

[0095] In one embodiment, after the working electrodialysis membrane stack is cleaned, the current of the working electrodialysis membrane stack can be detected again to obtain a second current value; if the second current value is still outside the preset range, it is determined that it may be caused by scale still remaining on the working electrodialysis membrane stack. Since it has been cleaned by the cleaning component, in actual situations, there is not much scale remaining on the working electrodialysis membrane stack. At this time, the electrodes of the working electrodialysis membrane stack can be switched. After a period of time of switching the electrodes, the scale formed on the surface of the electrodes can be automatically cleaned, so that the current of the working electrodialysis membrane stack tends to normal. If the water purification module includes multiple working electrodialysis membrane stacks, in order to avoid confusion between the soft water waterway and the wastewater waterway, when switching the electrodes of the working electrodialysis membrane stack whose second current value is outside the preset range, all other working electrodialysis membrane stacks also need to switch electrodes.

[0096] Due to the shedding of the graphite coating on the electrode, the current of the electrodialysis membrane stack will also increase or decrease under the premise of applying the same preset voltage to the electrodialysis membrane stack. Therefore, after switching the electrodes of the working electrodialysis membrane stack after cleaning, after a preset period of time, the third current value of the working electrodialysis membrane stack is obtained. If the third current value obtained at this time is within the preset range, it can be determined that the abnormality of the second current value is caused by electrode scaling, the graphite coating on the electrode has not fallen off, and the working electrodialysis membrane stack can still be used normally. If the third current value is outside the preset range, it can be determined that the abnormality of the second current value is caused by the shedding of the graphite coating on the electrode. The electrode abnormality caused by the working electrodialysis membrane stack is unusable. At this time, the working electrodialysis membrane stack with the abnormal electrode is shut down.

[0097] By switching the electrodes of the cleaned working electrodialysis membrane stack and then detecting the current value of the working electrodialysis membrane stack, the electrodialysis membrane stack with abnormal electrodes can be effectively found, thereby improving water safety.

[0098] In one embodiment, the controller includes a communication module. When an electrode abnormality is determined to be present in a working electrodialysis membrane stack, the controller can communicate with an external terminal via the communication module, such as WIFI or ZigBee, to ensure timely detection of the abnormality. When an electrode abnormality is detected in the electrodialysis membrane stack, a prompt message indicating the electrode abnormality is generated and transmitted to the external terminal via the communication module. This allows the user of the external terminal to promptly be informed of the abnormality in the working electrodialysis membrane stack, thereby enabling the user to repair the electrodialysis membrane stack after receiving the prompt message. The external terminal can be a terminal equipped with a user application corresponding to the water purification module to which the working electrodialysis membrane stack belongs.

[0099] Considering that there are multiple working electrodialysis membrane stacks, if an electrode abnormality is detected, it will be difficult to quickly determine which working electrodialysis membrane stack is abnormal and repair it. Therefore, in one embodiment, the prompt information includes a unique serial number corresponding to the working electrodialysis membrane stack.

[0100] In one embodiment, each electrodialysis membrane stack 3 is pre-set with a unique serial number. After applying a preset voltage to each electrodialysis membrane stack 3 to obtain multiple working electrodialysis membrane stacks, if an abnormal current is detected in a working electrodialysis membrane stack, the serial number corresponding to the abnormal working electrodialysis membrane stack is added to a prompt message, and the prompt message with the serial number is sent to an external terminal, so that the user of the external terminal can quickly locate the abnormal working electrodialysis membrane stack based on the serial number in the prompt message and repair it.

[0101] If there are multiple working electrodialysis membrane stacks to purify water together, when one working electrodialysis membrane stack is abnormal, the remaining working electrodialysis membrane stacks can still purify water, thereby avoiding the situation where one working electrodialysis membrane stack is abnormal and cannot purify water, thereby improving water safety.

[0102] In one embodiment, when there are multiple electrodialysis membrane stacks in the water purification module, in order to save power resources, a preset voltage may be applied to only some of the electrodialysis membrane stacks in the water purification module to make them serve as working electrodialysis membrane stacks, and the remaining electrodialysis membrane stacks are in a closed state to serve as standby electrodialysis membrane stacks. When the electrode detection result of the working electrodialysis membrane stack is detected as an electrode abnormality, the working electrodialysis membrane stack is unusable and the working electrodialysis membrane stack is shut down. At the same time, the power supply is controlled to apply a preset voltage to any standby electrodialysis membrane stack to make it serve as a normal working electrodialysis membrane stack to replace the abnormal working electrodialysis membrane stack to perform water purification work, so that when an abnormality occurs in the electrode of a working electrodialysis membrane stack, the water purification efficiency can still be maintained.

[0103] In one embodiment, if Figure 5 As shown, the water purification component also includes:

[0104] A water channel switching component 7 is connected to the water outlet side of the water purification module 1 and is used to switch the water channel downstream of the water purification module 1;

[0105] The controller is also used to control the water channel switching component 7 to switch the water channel downstream of the water purification module 1 when controlling the corresponding working electrodialysis membrane stack to switch electrodes.

[0106] In one embodiment, when controlling the working electrodialysis membrane stack to switch electrodes, the controller adjusts the states of all valves in the water switching assembly 7 to switch the water path downstream of the water purification module 1 to ensure that the soft water path and the waste water path of the water purification assembly are not confused, so that the water production effect of the water purification assembly is not affected by changes in the water production mode.

[0107] In one embodiment, if Figure 5 As shown, the electrodialysis membrane stack 2 may include a first water chamber 11 and a second water chamber 12 , each of which may have an inlet and an outlet.

[0108] In one embodiment, the first water chamber 11 and the second water chamber 12 are used to store soft water or wastewater. In certain embodiments, if the upper electrode of the working electrodialysis membrane stack is a positive electrode and the lower electrode is a negative electrode, that is, the working electrodialysis membrane stack is in the positive electrolysis water production mode, the first water chamber 11 is a purified water chamber for storing soft water, and the second water chamber 12 is a concentrated water chamber for storing wastewater. Correspondingly, the water path connecting the first water chamber 11 is a soft water path, and the water path connecting the second water chamber 12 is a wastewater path. It will be understood that if a voltage is applied to the working electrodialysis membrane stack so that the upper electrode of the working electrodialysis membrane stack is a negative electrode and the lower electrode is a positive electrode, that is, the working electrodialysis membrane stack is in the negative electrolysis water production mode, the first water chamber 11 is a concentrated water chamber for storing wastewater, and the second water chamber 12 is a purified water chamber for storing soft water. Correspondingly, the water path connecting the first water chamber 11 is a wastewater path, and the water path connecting the second water chamber 12 is a soft water path.

[0109] In one embodiment, if Figure 5As shown, the waterway switching assembly 7 includes a first reversing valve 13 and a second reversing valve 14. The first end of the first reversing valve 13 is connected to the water outlet of the first water chamber 11. During the water production process, the first end of the first reversing valve 13 is in communication with the water outlet of the first water chamber 11, receiving the soft water or wastewater flowing out of the first water chamber 11. The second end of the first reversing valve 13 is connected to the soft water outlet, and the third end of the first reversing valve 13 is connected to the wastewater outlet. The first end of the second reversing valve 14 is connected to the water outlet of the second water chamber 12. During the water production process, the first end of the second reversing valve 14 is in communication with the water outlet of the second water chamber 12, receiving the soft water or wastewater flowing out of the second water chamber 12. The second end of the second reversing valve 14 is connected to the soft water outlet, and the third end of the second reversing valve 14 is connected to the wastewater outlet. The first and second reversing valves 13 and 14 may be three-way reversing valves.

[0110] When the water production mode is positive, the first water chamber 11 functions as a purified water chamber. The controller then controls the second end of the first reversing valve 13 to connect to the soft water outlet, forming a soft water path. It also controls the third end of the first reversing valve 13 to close, allowing the first reversing valve 13 to direct the soft water drawn from the first water chamber 11 through the soft water path. Simultaneously, when the water production mode is positive, the second water chamber 12 functions as a concentrated water chamber. The controller then controls the second end of the second reversing valve 14 to close and connect the third end of the second reversing valve 14 to the wastewater outlet, forming a wastewater path for wastewater discharge.

[0111] Similarly, when the water production mode is negative-charge water production, the first water chamber 11 functions as a concentrated water chamber. At this point, the controller controls the second end of the first reversing valve 13 to close and the third end of the first reversing valve 13 to connect to the wastewater outlet, forming a wastewater waterway for wastewater discharge. Simultaneously, when the water production mode is negative-charge water production, the second water chamber 12 functions as a purified water chamber. At this point, the controller controls the second end of the second reversing valve 14 to connect to the soft water outlet and controls the third end of the second reversing valve 14 to close, allowing the second reversing valve 14 to direct the soft water drawn from the second water chamber 12 into the soft water waterway.

[0112] Through the above method, it is ensured that only soft water flows into the water storage device, so that the water quality of the water purification module is not affected by the switching electrodes of the electrodialysis membrane stack.

[0113] In one embodiment, if Figure 6 As shown, the water purification component also includes:

[0114] The first detector 8 is used to detect the total dissolved solids value of the water entering the water purification module and determine the TDS of the water;

[0115] The second detector 9 is used to detect the total dissolved solids value of the water discharged from the water purification module and determine the TDS of the water;

[0116] The controller is specifically used to determine the cleaning time according to the inlet water TDS and the outlet water TDS, so as to control the cleaning component to clean the water purification module 1 according to the cleaning time.

[0117] In one embodiment, the first detector 8 is disposed in the water inlet path of the water purification module 1, such as between the water purification module 1 and the cleaning component 2, or upstream of the cleaning component 2, to detect the TDS of the raw water flowing into the water purification module 1 to obtain the inlet TDS of the water purification module 1. Based on the obtained inlet TDS value, the number of milligrams of dissolved solids dissolved in each liter of raw water and the water quality of the raw water can be determined, thereby detecting the water quality of the water inlet to the water treatment component of the household appliance. The first detector 8 can be a TDS sensor. The unit of TDS can be mg / L, indicating the number of milligrams of dissolved solids dissolved in each liter of water. TDS can reflect the water quality. The larger the TDS value, that is, the more dissolved solids dissolved in each liter of water, the worse the water quality.

[0118] In one embodiment, a second detector 9 is disposed in the soft water path of the water purification module 1 and is used to detect the TDS of the soft water flowing out of the water purification module 1 to obtain the outlet TDS of the water purification module 1. Based on the obtained outlet TDS value, the number of milligrams of dissolved solids per liter of the soft water and the water quality of the soft water can be determined. The second detector 9 can be a TDS sensor.

[0119] In one embodiment, the controller can directly determine the cleaning time based on the inlet water TDS. If the controller pre-stores a correspondence between the inlet water TDS and the cleaning time, upon obtaining the inlet water TDS, the controller can query the cleaning time corresponding to the inlet water TDS and then control the cleaning component to clean the water purification module based on the cleaning time.

[0120] Alternatively, the controller can directly determine the cleaning duration based on the outlet water TDS. If the controller pre-stores a correspondence between outlet water TDS and cleaning duration, upon obtaining the outlet water TDS, it can query the cleaning duration corresponding to the outlet water TDS and then control the cleaning component to clean the water purification module based on the cleaning duration.

[0121] Since the difference between the inlet TDS and the outlet TDS can directly reflect the cleaning effect, to improve the cleaning efficiency of the water purification module 1, after obtaining the inlet TDS and the outlet TDS, the cleaning time can be determined based on the difference between the inlet TDS and the outlet TDS. For example, the controller pre-stores a corresponding relationship between the difference between the inlet TDS and the outlet TDS and the cleaning time. After determining the difference between the inlet TDS and the outlet TDS, the cleaning time corresponding to the difference can be queried. The cleaning component can then be controlled to clean the water purification module based on the cleaning time, thereby improving the cleaning efficiency of the water purification module.

[0122] In one embodiment, if Figure 6 As shown, the water purification assembly may further include a first flow limiting valve 15 and a second flow limiting valve 16. The first flow limiting valve 15 is connected to the water inlet of the first water chamber 11, and the second flow limiting valve 16 in the flow limiting assembly is connected to the water inlet of the second water chamber 12. The first flow limiting valve 15 and the second flow limiting valve 16 are electrically connected to the controller. Both the first flow limiting valve 15 and the second flow limiting valve 16 may be solenoid valves, which are flow controllable and easy to control by the controller. A solenoid valve is a valve body controlled by electromagnetics. Its operating principle is as follows: The solenoid valve contains a sealed chamber with holes at different locations, each connected to a different oil pipe. A piston sits in the center of the chamber, flanked by two electromagnets. The valve body is attracted to the side to which the magnet coil is energized. Controlling the movement of the valve body opens or closes different oil drain holes. The oil inlet hole is normally open, allowing hydraulic oil to enter different oil drain pipes. The oil pressure then pushes the piston in the oil cylinder, which in turn drives the piston rod, which in turn drives the mechanical device. Therefore, controlling the current flowing through the electromagnets controls the mechanical movement. The first and second flow limiting valves 15 and 16 are solenoid valves with the same flow rate, for example, both have a flow rate of 2000 ml / min.

[0123] When flushing the water purification module, the controller can simultaneously open the first flow limiting valve 15 and the second flow limiting valve 16 on the main water line, thereby achieving a comprehensive flushing of the water purification module 1. When purifying water, the controller can control the opening and closing of the first flow limiting valve 15 and the second flow limiting valve 16 to limit the flow direction of the raw water. If the first flow limiting valve 15 is opened and the second flow limiting valve 16 is closed, the raw water can be controlled to enter the first water chamber 11 of the first working electrodialysis membrane stack; if the first flow limiting valve 15 is closed and the second flow limiting valve 16 is opened, the raw water can be controlled to enter the second water chamber 12 of the first working electrodialysis membrane stack.

[0124] In one embodiment, the water purification component further comprises:

[0125] A water tank 300, the water inlet of the water tank 300 is connected to the soft water channel downstream of the water purification module 1;

[0126] The second valve 200 is provided on the water inlet of the water tank.

[0127] In one embodiment, a water tank 300 is disposed downstream of the water channel switching assembly 7 and connected to the second ends of the first reversing valve 13 and the second reversing valve 14. It is used to store the soft water flowing out of the water purification module 1. Before the controller controls the cleaning unit 2 to clean the water purification module 1, the controller controls the second valve 200 to close. This prevents the cleaned water from flowing into the water tank 300 while the cleaning unit 2 is cleaning the water purification module 1, thereby improving water safety.

[0128] The control method of the water purification component of the household appliance provided in the present application is described below. The control method of the water purification component of the household appliance described below can be referenced to the water purification component of the household appliance described above.

[0129] In one embodiment, if Figure 7 As shown, a control method for a water purification component of a household appliance is provided, wherein the water purification component of the household appliance is the water purification component of any of the above embodiments, and a controller applied to the water purification component of the household appliance includes:

[0130] Step 101, obtaining first current values ​​of each working electrodialysis membrane stack in a water purification module at a preset voltage;

[0131] Step 102: determining that any first current value is outside a preset range, starting a cleaning component to clean the corresponding working electrodialysis membrane stack;

[0132] Among them, the working electrodialysis membrane stack is an electrodialysis membrane stack in the water purification module to which a preset voltage is applied.

[0133] By arranging a cleaning component upstream of the water purification module, when scale appears in the electrodialysis membrane stack in the water purification module, the electrodialysis membrane stack in the water purification module can be cleaned by the cleaning component, thereby reducing the scale on the water purification module and improving the water purification effect.

[0134] In one embodiment, the control method further includes:

[0135] A second current value of the cleaned working electrodialysis membrane stack is obtained, and it is determined that the second current value is outside a preset range, and the corresponding working electrodialysis membrane stack is controlled to switch electrodes.

[0136] In one embodiment, the control method further includes:

[0137] Obtaining a third current value of the working electrodialysis membrane stack at a preset voltage after switching the electrodes;

[0138] It is determined that the third current value is outside the preset range, and it is determined that the electrode of the working electrodialysis membrane stack is abnormal. A prompt message is generated according to the unique serial number of the working electrodialysis membrane stack with the abnormal electrode.

[0139] In one embodiment, the control method further includes:

[0140] Shut down the working electrodialysis membrane stack with abnormal electrodes, and control the power supply to apply a preset voltage to the standby electrodialysis membrane stack in the water purification module, and calibrate the standby electrodialysis membrane stack working at the preset voltage as the working electrodialysis membrane stack.

[0141] In one embodiment, the water purification component is as follows Figure 5 As shown, the control method further includes:

[0142] When controlling the corresponding working electrodialysis membrane stack to switch electrodes, the water channel switching component is controlled to switch the water channel downstream of the water purification module.

[0143] In one embodiment, controlling the water channel switching component to switch the water channel downstream of the water purification module includes:

[0144] Control the first reversing valve to communicate with the soft water outlet to form a soft water path, and control the second reversing valve to communicate with the waste water outlet to form a waste water path of the water purification component; or,

[0145] The second reversing valve is controlled to communicate with the soft water outlet to form a soft water path of the water purification component, and the first reversing valve is controlled to communicate with the waste water outlet to form a waste water path of the water purification component.

[0146] Through the above method, the soft water outlet only discharges soft water, the waste water outlet only discharges waste water, the soft water channel and the waste water channel do not cross, so that the water quality of the water purification module is not affected by the electrode switching of the working electrodialysis membrane stack.

[0147] In one embodiment, the water purification component of the household appliance is Figure 6 As shown, the control method further includes:

[0148] The cleaning time is determined according to the inlet TDS and outlet TDS of the water, so as to control the cleaning components to clean the water purification module according to the cleaning time;

[0149] Among them, the inlet TDS is the total dissolved solids value of the water entering the water purification module, and the outlet TDS is the total dissolved solids value of the water leaving the water purification module.

[0150] Figure 8 An example of a physical structure diagram of an electronic device is shown below. Figure 8 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call a computer program in the memory 830 to execute the steps of the control method of the water purification component of the household appliance, for example, including:

[0151] Obtaining first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage;

[0152] Determining that any first current value is outside a preset range, starting a cleaning component to clean the corresponding working electrodialysis membrane stack;

[0153] Among them, the working electrodialysis membrane stack is an electrodialysis membrane stack in the water purification module to which a preset voltage is applied.

[0154] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0155] On the other hand, an embodiment of the present application further provides a storage medium, the storage medium including a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the control method of the water purification component of the household appliance provided in the above embodiments, for example, including:

[0156] Obtaining first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage;

[0157] Determining that any first current value is outside a preset range, starting a cleaning component to clean the corresponding working electrodialysis membrane stack;

[0158] Among them, the working electrodialysis membrane stack is an electrodialysis membrane stack in the water purification module to which a preset voltage is applied.

[0159] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, which stores a computer program. The computer program is used to cause a processor to execute the steps of the methods provided in the above embodiments, for example, including:

[0160] Obtaining first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage;

[0161] Determining that any first current value is outside a preset range, starting a cleaning component to clean the corresponding working electrodialysis membrane stack;

[0162] Among them, the working electrodialysis membrane stack is an electrodialysis membrane stack in the water purification module to which a preset voltage is applied.

[0163] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0164] In one embodiment, a household appliance is further provided, comprising: the water purification component of the household appliance of any of the above embodiments or the electronic device of the above embodiments.

[0165] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0166] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water purification component for a household appliance, characterized in that: include: A water purification module provided on the main water channel of the water purification assembly; A cleaning component is provided upstream of the water purification module, the cleaning component is used to put in laundry, and the cleaning component can be selectively connected to the main water channel where the water purification module is located; The cleaning component is adapted to be connected to a power supply in an on-off manner; a current detector connected to the water purification module to detect the current value of any electrodialysis membrane stack in the water purification module; a controller, configured to obtain, through the current detector, first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage, and, if any of the first current values ​​is outside a preset range, activate the cleaning component to clean the corresponding working electrodialysis membrane stack; Wherein, the working electrodialysis membrane stack is an electrodialysis membrane stack in the water purification module to which the preset voltage is applied; the water purification module includes at least one electrodialysis membrane stack; The controller is further configured to obtain a second current value of the cleaned working electrodialysis membrane stack, determine that the second current value is outside a preset range, and control the corresponding working electrodialysis membrane stack to switch electrodes.

2. The water purification component of a household appliance according to claim 1, characterized in that: The cleaning component includes a storage container for placing laundry and a first valve; The storage container is arranged on a branch upstream of the water purification module and connected to the main waterway where the water purification module is located; The first valve is arranged on the water inlet of the storage container.

3. The water purification component of a household appliance according to claim 1, characterized in that: The controller is also used to: Obtaining a third current value of the working electrodialysis membrane stack at a preset voltage after switching electrodes; It is determined that the third current value is outside the preset range, and it is determined that the electrode of the working electrodialysis membrane stack is abnormal. A prompt message is generated according to the unique serial number of the working electrodialysis membrane stack with the abnormal electrode.

4. The water purification component of a household appliance according to claim 3, characterized in that: The controller is also used to: The working electrodialysis membrane stack with abnormal electrodes is turned off, and the power supply is controlled to apply the preset voltage to the standby electrodialysis membrane stack in the water purification module, and the standby electrodialysis membrane stack working under the preset voltage is calibrated as the working electrodialysis membrane stack.

5. The water purification component of a household appliance according to claim 1, characterized in that: Also includes: a water channel switching component connected to the water outlet side of the water purification module and used to switch the water channel downstream of the water purification module; The controller is further configured to control the water channel switching component to switch the water channel downstream of the water purification module when controlling the corresponding working electrodialysis membrane stack to switch electrodes.

6. The water purification component of a household appliance according to claim 1, characterized in that: Also includes: A first detector is used to detect the total dissolved solids value of the water entering the water purification module to determine the TDS of the water; A second detector is used to detect the total dissolved solids value of the water output from the water purification module to determine the output water TDS; The controller is specifically configured to determine a cleaning time according to the inlet water TDS and the outlet water TDS, so as to control the cleaning component to clean the water purification module according to the cleaning time.

7. The water purification component of a household appliance according to any one of claims 1 to 6, characterized in that: Also includes: a water tank, wherein the water inlet of the water tank is connected to the soft water channel downstream of the water purification module; The second valve is arranged on the water inlet of the water tank.

8. A household appliance, characterized in that: include: A water purification component for a household appliance according to any one of claims 1 to 7.

9. A method for controlling a water purification component of a household appliance, characterized in that: A water purification component for a household appliance according to any one of claims 1 to 7, comprising: Obtaining first current values ​​of each working electrodialysis membrane stack in the water purification module at a preset voltage; determining that any of the first current values ​​is outside a preset range, starting the cleaning component to clean the corresponding working electrodialysis membrane stack; Wherein, the working electrodialysis membrane stack is the electrodialysis membrane stack in the water purification module to which the preset voltage is applied.

10. The control method of the water purification component of a household appliance according to claim 9, characterized in that: Applied to the water purification component of the household appliance according to claim 6, the control method further comprises: determining a cleaning time according to the inlet water TDS and the outlet water TDS, and controlling the cleaning component to clean the water purification module according to the cleaning time; The inlet TDS is the total dissolved solids value of the water entering the water purification module, and the outlet TDS is the total dissolved solids value of the water exiting the water purification module.

11. An electronic device comprising a processor and a memory storing a computer program, characterized in that: When the processor executes the computer program, the method for controlling the water purification component of a household appliance according to any one of claims 9 to 10 is implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the water purification component of a household appliance according to any one of claims 9 to 10 is implemented.

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