Water inlet device, dish washing machine and control method of dish washing machine

Abstract

The invention discloses a water inlet device, a dish-washing machine and a control method of the dish-washing machine, the water inlet device comprises a water softener, the water softener is provided with a resin cavity and a salt cavity, first ion exchange resin and second ion exchange resin are arranged in the resin cavity, the first ion exchange resin is suitable for replacing metal ions in water, and the second ion exchange resin is suitable for replacing metal ions in water; the second ion exchange resin is suitable for reacting with alkali in water; the electrolysis module is provided with an electrolysis inlet, an acidic water outlet and an alkaline water outlet, the electrolysis inlet is connected with the resin cavity, the alkaline water outlet is communicated to the washing cavity through a first flow path, and the acidic water outlet is communicated to the washing cavity through a second flow path. According to the water inlet device, consumable-material-reducing or consumable-material-free cleaning can be achieved, the use cost of the dish-washing machine is reduced, chemical component residues are avoided, breeding of microorganisms such as bacteria and molds is inhibited, and the sanitary safety of tableware is improved; the alkalinity in the inlet water can be removed, the electrolysis efficiency of the electrolysis module is improved, and the problem of weak acid-base caused by high alkalinity is avoided.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a water inlet device, a dishwasher, and a control method for the dishwasher. Background Technology

[0002] In related technologies, dishwashers primarily rely on the combined effects of high-temperature hot water, high-pressure spray rinsing, and specialized washing consumables to decompose grease and clean tableware. High temperature and high-pressure spray physically remove food residue, and the washing consumables enhance degreasing, water softening, and rinsing effects, ensuring that cleaning and disinfection meet standards. However, this method is highly dependent on consumables such as dishwasher powder, dishwasher tablets, water softening salt, and rinsing agents, which increases user costs in the long run. Furthermore, chemical components can easily remain on the surface of tableware, the inner walls of the dishwasher, and in the pipes, potentially entering the body with food and posing health risks. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a water inlet device that can reduce or eliminate the need for consumable cleaning, lower the operating cost of the dishwasher, avoid chemical residues, inhibit the growth of bacteria, mold, and other microorganisms, and improve the hygiene and safety of tableware; it can also remove alkalinity from the inlet water, improve the electrolysis efficiency of the electrolysis module, and avoid the problem of acid-base imbalance caused by high alkalinity.

[0004] The present invention also proposes a dishwasher having the above-described water inlet device.

[0005] The present invention also proposes a control method for a dishwasher.

[0006] According to a first aspect of the present invention, a water inlet device is used for a dishwasher, the dishwasher having an inner tank defining a washing chamber, the water inlet device comprising: a water softener having a resin chamber and a salt chamber, the resin chamber being provided with a first ion exchange resin and a second ion exchange resin, the first ion exchange resin being adapted to replace metal ions in water, and the second ion exchange resin being adapted to react with alkali in water; an electrolysis module having an electrolysis inlet, an acidic outlet and an alkaline outlet, the electrolysis inlet being connected to the resin chamber, the electrolysis module being configured to electrolyze water entering the electrolysis module into an acidic liquid and an alkaline liquid, the alkaline outlet being connected to the washing chamber via a first flow path, and / or the acidic outlet being connected to the washing chamber via a second flow path.

[0007] According to the water inlet device of the present invention, acidic and alkaline liquids are generated by electrolysis through an electrolysis module. The alkaline liquid is used for dishwasher washing, and the acidic liquid is used for dishwasher rinsing. This can reduce or eliminate the need for consumables, lower the operating cost of the dishwasher, avoid chemical residues, inhibit the growth of bacteria, mold and other microorganisms, and improve the hygiene and safety of tableware. By setting a second ion exchange resin in the resin chamber of the water softener to neutralize the alkali in the water, the second ion exchange resin can remove the alkalinity of the inlet water, improve the electrolysis efficiency of the electrolysis module, avoid the problem of acid-base imbalance caused by high alkalinity, reduce ineffective neutralization losses, and improve the working effect of the electrolysis module.

[0008] In some embodiments, the first ion exchange resin is a sodium-type ion exchange resin, and / or the second ion exchange resin is a hydrogen-type ion exchange resin.

[0009] In some embodiments, the first ion exchange resin is a sodium-type strong acid ion exchange resin having sodium sulfonate groups, and / or the second ion exchange resin is a hydrogen-type weak acid ion exchange resin having carboxylic acid groups.

[0010] In some embodiments, the second flow path includes a first pipe and a second pipe, and the water inlet device further includes a water storage tank having a water inlet and a first outlet. The first pipe is connected between the acidic water outlet and the water inlet, and one end of the second pipe is connected to the first outlet and the other end is connected to the washing chamber.

[0011] In some embodiments, the water tank further has a second outlet, which is connected to the resin chamber via a regeneration water path for supplying acidic liquid to the resin chamber for regenerating the second ion exchange resin.

[0012] In some embodiments, the salt chamber is connected to the electrolysis module via a first water path to supply brine to the electrolysis module, and the resin chamber is connected to the electrolysis module via a second water path.

[0013] In some embodiments, the water inlet device further includes a mixing tank connected between the water softener and the electrolysis module, wherein both the first water path and the second water path are connected to the electrolysis module through the mixing tank.

[0014] In some embodiments, the electrolysis module has an anode chamber and a cathode chamber, and the electrolysis module has a flow control structure configured such that the ratio of the fluid flow rate in the anode chamber to the fluid flow rate in the cathode chamber is less than 1 / 2.

[0015] According to a second aspect of the present invention, a dishwasher includes: an inner tub having a washing chamber; and a water inlet device according to a first aspect of the present invention, wherein an alkaline water outlet is connected to the washing chamber via a first flow path, and / or an acidic water outlet is connected to the washing chamber via a second flow path.

[0016] According to the dishwasher of the present invention, by providing the water inlet device described in the first aspect, the overall performance of the dishwasher is improved.

[0017] According to a third aspect of the present invention, the dishwasher is a dishwasher according to a second aspect of the present invention. The control method includes: confirming that the dishwasher meets preset resin regeneration conditions; controlling the salt chamber to deliver brine to the resin chamber for regenerating a first ion exchange resin; and controlling the water tank to deliver acidic liquid to the resin chamber through a regeneration water path for regenerating a second ion exchange resin.

[0018] According to the dishwasher control method of the present invention, by providing the water inlet device described in the first aspect, the overall performance of the dishwasher is improved.

[0019] In some embodiments, the control method further includes: during the pre-wash stage, the main wash stage, and / or the alkaline rinsing stage, the electrolysis module delivers alkaline liquid to the washing chamber through a first flow path and delivers acidic liquid to the water tank through a first pipeline; during the acidic rinsing stage, the water tank delivers acidic liquid to the washing chamber through a second pipeline.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a dishwasher according to an embodiment of the present invention.

[0022] Figure 2 This is a flowchart of a dishwasher control method according to an embodiment of the present invention.

[0023] Figure label: 100. Water inlet device; 10. Water softener; 11. Resin chamber; 12. Salt chamber; 20. Electrolysis module; 21. Alkaline water outlet; 22. Acidic water outlet; 23. Electrolysis inlet; 25. Flow control structure; 26. On / off valve; 31. First flow path; 32. Second flow path; 321. First conduit; 322. Second conduit; 33. First waterway; 34. Second waterway; 37. Reclaimed waterway; 301. Water inlet system; 60. Mixing tank; 70. First sensor; 90. Water tank; 91. Water inlet; 92. First outlet; 93. Second outlet; 200. Inner liner; 201. Washing chamber; 1000, Dishwasher; 300, Third sensor. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following is for reference. Figure 1 and Figure 2 A water inlet device 100 according to a first aspect embodiment of the present invention is described. The water inlet device 100 of this embodiment is used in a dishwasher 1000. The dishwasher 1000 has an inner tub 200 that defines a washing chamber 201. The water inlet device 100 is used to supply water into the washing chamber 201 for cleaning the tableware inside the washing chamber 201 of the inner tub 200.

[0026] like Figure 1 As shown, the water inlet device 100 according to a first aspect embodiment of the present invention includes: a water softener 10, an electrolysis module 20, a first flow path 31, and a second flow path 32.

[0027] Specifically, the water softener 10 has a resin chamber 11 and a salt chamber 12. The resin chamber 11 is provided with a first ion exchange resin and a second ion exchange resin. The first ion exchange resin is suitable for replacing metal ions in the water, and the second ion exchange resin is suitable for reacting with alkali in the water. The motor module has an electrolysis inlet 23, an acid inlet / outlet, and an alkaline outlet 21. The electrolysis inlet 23 is connected to the resin chamber 11. The electrolysis module 20 is configured to electrolyze the water entering the electrolysis module 20 into acidic and alkaline liquids. The alkaline outlet 21 is connected to the washing chamber 201 through a first flow path 31, and / or the acidic outlet 22 is connected to the washing chamber 201 through a second flow path 32.

[0028] For example, the water inlet device 100 includes an inlet water passage 301, a water softener 10 connected in series with the inlet water passage 301, and the electrolysis inlet 23 of the electrolysis module 20 connected to the outlet of the inlet water passage 301. When water enters the water inlet device 100, the water is first softened by the water softener 10 and then enters the electrolysis module 20 for electrolysis. The water softener 10 includes a resin chamber 11 and a salt chamber 12. The resin chamber 11 is filled with ion exchange resin, and the salt chamber 12 stores regeneration salt (such as sodium chloride) for regenerating the ion exchange resin.

[0029] The resin chamber 11 can be filled with various ion exchange resins, including a first ion exchange resin and a second ion exchange resin. The first ion exchange resin is used to replace metal ions in the water. For example, the first ion exchange resin can replace hard metal ions such as calcium ions and magnesium ions in the water. This can effectively reduce the hardness of the water entering the electrolysis module 20, prevent calcium and magnesium ions from forming scale on the surface of the electrolysis module 20, the inner tank 200 of the dishwasher 1000, and the pipes, ensure smooth water flow in the dishwasher 1000, and ensure the electrolysis efficiency and service life of the electrolysis module 20.

[0030] It should be noted that when the alkalinity of the water entering from the inlet of water inlet channel 301 is too high, the high content of carbonate and bicarbonate ions in the water will cause the hydroxide ion concentration in the cathode chamber of electrolysis module 20 to approach saturation during continuous electrolysis. This slows down the reaction rate, and the high concentration of hydroxide ions in the anode chamber directly participates in the oxidation reaction, replacing the hydrogen ion generation pathway. This results in insufficient hydrogen ion content in the acidic liquid, leading to a lower pH value for the alkaline liquid and a higher pH value for the acidic liquid produced by electrolysis module 20. When the acidic and alkaline liquids are used to wash dishes, the washing effect will be affected. Furthermore, alkalinity varies significantly across regions, especially in northern regions where alkalinity is higher, severely impacting the electrolysis effect of electrolysis module 20.

[0031] In this embodiment, the second ion exchange resin is used to neutralize the alkali in the water. When water enters the resin chamber 11 and passes through the second ion exchange resin, the second ion exchange resin can exchange ions with alkaline ions such as hydroxide, carbonate, and bicarbonate in the water, effectively neutralizing the alkalinity of the water. As a result, when the electrolysis module 20 is working continuously, there is no longer any alkalinity to neutralize the hydrogen ions and hydroxide ions generated by electrolysis, causing the pH of the water in the anode chamber to drop faster and stabilize at a lower level, resulting in stronger acidity; the pH of the water in the cathode chamber rises more rapidly and stabilizes at a higher level, resulting in more sufficient alkalinity, thus improving the electrolysis efficiency of the electrolysis module 20, avoiding the problem of acid-base imbalance caused by high alkalinity, reducing ineffective neutralization losses, improving the working effect of the electrolysis module 20, and ensuring the cleaning effect of alkaline and acidic liquids on the tableware in the washing chamber 201.

[0032] In some examples, the electrolysis module 20 has an anode chamber and a cathode chamber. The electrolysis inlet 23 is connected to both the anode and cathode chambers. The acidic outlet 22 is connected to the anode chamber, and the alkaline outlet 21 is connected to the cathode chamber. The inlet end of the water inlet channel 301 is formed as an inlet, and the outlet end of the water inlet channel 301 is connected to the electrolysis inlet 23. When the water inlet device 100 is filled with water, the water entering the water inlet channel 301 through the inlet passes through the electrolysis inlet 23 and enters the electrolysis module 20. The water in the electrolysis inlet 23 can be divided into two parts, flowing to the anode chamber and the cathode chamber respectively. The cathode and anode of the electrolysis module 20 are respectively located in the cathode chamber and the anode chamber. When the anode and cathode are energized, a reaction occurs in the anode chamber to generate oxygen and acidic liquid, and a reaction occurs in the cathode chamber to generate hydrogen and alkaline liquid. Thus, acidic liquid and alkaline liquid are generated respectively through electrolysis.

[0033] The alkaline liquid in the cathode chamber can be delivered into the washing chamber 201 through the alkaline water outlet 21 and the first flow path 31. For example, during the washing process of the dishwasher 1000, such as when the dishwasher 1000 is in the pre-wash or main wash stage, the alkaline liquid can be delivered into the washing chamber 201 to effectively clean the dishes in the washing chamber 201. This reduces the use of consumables such as dishwasher detergent, dishwasher tablets, water softener, and rinsing agent, and can even achieve consumable-free cleaning, reducing the operating cost of the dishwasher 1000. It also prevents the chemical components of consumables from remaining on the surface of the dishes, the inner wall of the dishwasher 1000, and the pipes, avoiding health risks. In addition, the alkaline environment can inhibit the growth of bacteria, mold, and other microorganisms, achieving auxiliary sterilization and bacteriostasis, reducing the hygiene risks of dishes, and also reducing the adhesion and deposition of scale on the pipes, spray arms, and surface of the dishes in the dishwasher 1000, protecting the dishwasher 1000 and the dishes.

[0034] When rinsing is required in the washing chamber 201, the acidic liquid generated by the electrolysis module 20 can be delivered into the washing chamber 201 through the acidic outlet 22 and the second flow path 32 to rinse the tableware inside the washing chamber 201. In this embodiment, the acidic liquid is sent into the washing chamber 201 to rinse the tableware, quickly killing bacteria, fungi, and viruses on the surface of the tableware, achieving efficient sterilization and disinfection, and significantly improving the hygiene and safety of the tableware. At the same time, the acidic liquid can neutralize the alkaline substances remaining in the washing stage, avoiding the stickiness and whitening problems caused by alkaline residue, and improving the cleanliness of the rinse.

[0035] According to an embodiment of the present invention, the water inlet device 100 generates acidic and alkaline liquids through electrolysis by the electrolysis module 20. The alkaline liquid is used for washing in the dishwasher 1000, and the acidic liquid is used for rinsing in the dishwasher 1000. This reduces or eliminates the need for consumables, lowers the operating cost of the dishwasher 1000, avoids chemical residues, inhibits the growth of bacteria, mold, and other microorganisms, and improves the hygiene and safety of tableware. By providing a second ion exchange resin in the resin chamber 11 of the water softener 10 to neutralize the alkali in the water, the second ion exchange resin can remove the alkalinity in the inlet water, improve the electrolysis efficiency of the electrolysis module 20, avoid the problem of acid-base imbalance caused by high alkalinity, reduce ineffective neutralization losses, and improve the working effect of the electrolysis module 20.

[0036] In some embodiments of the present invention, such as Figure 1 As shown, the first ion exchange resin is a sodium-type ion exchange resin. For example, the first ion exchange resin can be a sodium-type cation exchange resin, and its functional groups can be one or more of sodium sulfonate groups, sodium phosphate groups, and sodium aminophosphonate groups. Therefore, sodium ions can efficiently replace hardening metal ions such as calcium and magnesium in the water, improving the replacement efficiency and effect of the first ion exchange resin, significantly reducing water hardness, and preventing scaling in the electrolysis module 20.

[0037] Furthermore, the first ion exchange resin is a sodium-type strong acid ion exchange resin with sodium sulfonate groups. This allows the first ion exchange resin to have a large exchange capacity and high selectivity for calcium and magnesium ions in water, effectively reducing water hardness and facilitating regeneration.

[0038] In some embodiments of the present invention, the second ion exchange resin is a hydrogen-form ion exchange resin. For example, the second ion exchange resin can be a hydrogen-form cation exchange resin, and its functional groups can be one or more of carboxyl, phosphonic, and sulfonic acid groups. The second ion exchange resin being a hydrogen-form ion exchange resin can release hydrogen ions into the water to neutralize alkaline substances in the water, ensuring the electrolysis effect of the electrolysis module 20, and also reducing alkaline scaling and component corrosion.

[0039] Furthermore, the second ion exchange resin is a hydrogen-form weakly acidic ion exchange resin with carboxylic acid groups. Therefore, while achieving neutralization of alkaline substances, the second ion exchange resin can have a higher exchange capacity and a milder reaction with alkalis.

[0040] In some embodiments of the present invention, such as Figure 1As shown, the second flow path 32 includes a first pipe 321 and a second pipe 322. The water inlet device 100 also includes a water storage tank 90, which has a water inlet 91 and a first outlet 92. The first pipe 321 is connected between the acidic water outlet 22 and the water inlet 91. One end of the second pipe 322 is connected to the first outlet 92 and the other end is connected to the washing chamber 201. When the cathode chamber supplies alkaline liquid to the washing chamber 201 through the alkaline outlet 21 and the first flow path 31, the acidic liquid generated in the anode chamber can be temporarily stored in the water tank 90 through the acidic outlet 22 and the first pipeline 321. This allows the electrolysis module 20 to continuously generate alkaline liquid for use in the washing chamber 201 during operation, while preventing acidic liquid from being simultaneously introduced into the washing chamber and affecting the pH of the washing liquid. During the acidic rinsing stage, the electrolysis module 20 does not need to continue electrolysis; it only needs to supply the stored acidic liquid in the water tank 90 into the washing chamber 201 to complete the acidic rinsing of the dishes. This allows for a more rational structural design of the water inlet device 100, preventing the acidic liquid in the anode chamber of the electrolysis module 20 from overflowing.

[0041] In some embodiments of the present invention, such as Figure 1 As shown, the water tank 90 also has a second outlet 93, which is connected to the resin chamber 11 via the regeneration water passage 37, for supplying acidic liquid for regenerating the second ion exchange resin to the resin chamber 11. Thus, the acidic liquid generated by the electrolysis module 20 can be used to regenerate the second ion exchange resin, reducing the difficulty of regenerating the second ion exchange resin and improving the convenience of regeneration.

[0042] In some embodiments of the present invention, such as Figure 1 As shown, the water softener 10 has a resin chamber 11 and a salt chamber 12. The salt chamber 12 is connected to the electrolysis module 20 via a first water passage 33 to supply brine to the electrolysis module 20. The resin chamber 11 is connected to the electrolysis module 20 via a second water passage 34. During the water intake process of the water inlet device 100, the softened water in the resin chamber 11 can enter the electrolysis module 20 through the second water passage 34. At the same time, the regenerated brine in the salt chamber 12 can also enter the electrolysis module 20 through the first water passage 33. By introducing regenerated brine into the electrolysis module 20, the conductivity and chloride ion concentration of the liquid in the electrolysis module 20 can be increased, thereby reducing the electrolysis difficulty of the electrolysis module 20, reducing the operating power of the electrolysis module 20, reducing energy consumption, and improving the energy efficiency of the dishwasher 1000. In addition, the increased concentration of chloride ions can help the electrolysis module 20 generate more acidic hypochlorous acid, thereby further improving the sterilization effect of the acidic liquid on the tableware in the washing chamber 201, and also improving the removal effect of alkali in the water inlet channel 301.

[0043] In some embodiments of the present invention, such as Figure 1 As shown, the water inlet device 100 also includes a mixing tank 60, which is connected between the water softener 10 and the electrolysis module 20. The first water path 33 and the second water path 34 are both connected to the electrolysis module 20 through the mixing tank 60. The brine chamber 12 delivers brine to the mixing tank 60 via the first water path 33, and the resin chamber 11 delivers soft water to the mixing tank 60 via the second water path 34. The mixing tank 60 provides sufficient space for the soft water and brine inlet water delivered by the water softener 10 to mix thoroughly. The brine and soft water are uniformly mixed in the mixing tank 60 before being delivered to the electrolysis module 20. By setting up the mixing tank 60, the soft water and brine can be fully mixed, resulting in a more uniform distribution of various ions in the water entering the electrolysis module 20, improving the electrolysis efficiency of the electrolysis module 20, and enhancing the stability and reliability of its operation.

[0044] In some embodiments of the present invention, such as Figure 1 As shown, the mixing tank 60 and the water softener 10 can be integrated into one unit. This effectively reduces the overall size of the dishwasher 1000, facilitating its installation and subsequent maintenance. It also shortens the water inlet delivery path, improves the operating efficiency of the dishwasher 1000, simplifies the internal piping layout, reduces space occupation, lowers production and assembly costs, and enhances the structural compactness of the dishwasher 1000.

[0045] In some embodiments of the present invention, such as Figure 1 As shown, the electrolysis module 20 has an anode chamber and a cathode chamber, and the electrolysis module 20 has a flow control structure 25, which is configured such that the ratio of the fluid flow rate in the anode chamber to the fluid flow rate in the cathode chamber is less than 1 / 2. For example, the flow control structure 25 is configured such that the ratio of the fluid flow rate in the anode chamber to the fluid flow rate in the cathode chamber is 0.2, 0.25, 0.3, 0.35, 0.4, or 0.45.

[0046] In some examples, the anode chamber and cathode chamber of the electrolysis module 20 may each have independent liquid inlets or liquid inlet channels, and the liquid inlet of the cathode chamber may be larger than that of the anode chamber, or the cross-sectional dimension of the liquid inlet channel of the cathode chamber may be larger than that of the liquid inlet channel of the anode chamber, or a throttling structure may be provided in the liquid inlet channel of the cathode chamber. This results in different fluid flow rates in the anode chamber and the cathode chamber.

[0047] In some examples, regulating pumps and / or pressure dividing valves are arranged upstream of the anode chamber and the cathode chamber, respectively. By controlling the speed or duty cycle of the regulating pumps, different flow rates are achieved between the anode chamber and the cathode chamber. The pressure dividing valves are used to achieve different inlet water pressures between the anode chamber and the cathode chamber, thereby controlling different inlet flow rates.

[0048] In some examples, the acidic outlet 22 and alkaline outlet 21 of the electrolysis module 20 can be equipped with outlet valves of different opening degrees to control the flow rates of the anode and cathode chambers. In some examples, the diameter of the first pipe 321 connected to the acidic outlet 22 is smaller than the diameter of the first flow path 31 connected to the alkaline outlet 21.

[0049] It should be noted that the alkaline liquid generated by the electrolysis module 20 is mainly used in the pre-wash, main wash, and rinsing stages of the dishwasher 1000, while the acidic liquid is mainly used in the rinsing stage. Therefore, in a complete washing cycle of the dishwasher 1000, the demand for alkaline liquid is greater than the demand for acidic liquid. Thus, by ensuring that the ratio of the fluid flow rate in the anode chamber to the fluid flow rate in the cathode chamber is less than 1 / 2, this embodiment avoids the electrolysis module 20 from generating excessive acidic liquid, achieving zero wastewater and saving both water and energy.

[0050] In some embodiments of the present invention, such as Figure 1 As shown, the water inlet device 100 also includes a third pipe. One end of the third pipe is connected to the water inlet of the water inlet device 100, and the other end is connected to the water storage tank 90. ​​The third pipe is used to introduce water into the water storage tank 90 to dilute the acidic liquid in the water storage tank 90. ​​In other words, the third pipe connects the water inlet of the water inlet device 100 to the water storage tank 90. ​​When it is necessary to adjust the pH value of the acidic liquid in the water storage tank 90, the water inlet can be connected to the water storage tank 90 through the third pipe, allowing tap water to be introduced into the water storage tank 90 through the water inlet and the third pipe, thereby diluting the acidic liquid in the water storage tank 90 and lowering its pH value. The diluted acidic liquid is then transported to the washing chamber 201 for rinsing the tableware in the washing chamber 201. Therefore, the pH value of acidic liquids can be effectively adjusted without introducing external chemicals or adding equipment, improving adjustment efficiency and reducing costs.

[0051] In some embodiments of the present invention, such as Figure 1 As shown, one end of the third pipe is connected to the resin chamber 11, which is adapted to deliver soft water to the water storage tank 90 through the third pipe. Thus, water entering from the inlet of the water inlet device 100 can first enter the resin chamber 11 of the water softener 10, where it is softened. After softening in the resin chamber 11, a portion of the soft water then enters the water storage tank 90 through the third pipe. This prevents hardness ions from tap water from entering the third pipe and the water storage tank 90, avoiding scale formation in these areas, effectively preventing blockage of the third pipe, and extending the overall service life of the water inlet device 100.

[0052] In some embodiments of the present invention, such as Figure 1As shown, the water inlet device 100 also includes a three-way valve, which has a first valve port, a second valve port, and a third valve port. The first valve port is connected to the resin chamber 11, the second water passage 34 is connected between the second valve port and the mixing tank 60, and the third pipeline is connected between the third valve port and the storage tank 90. ​​The first valve port can be selectively connected to the second valve port and / or the third valve port. During the electrolysis process of the electrolysis module 20, the first valve port is connected to the second valve port, and the soft water flowing out of the resin chamber 11 enters the electrolysis module 20 through the first valve port, the second valve port, and the mixing tank 60. When it is necessary to dilute the acidic liquid in the storage tank 90, the first valve port is connected to the third valve port, and the soft water flowing out of the resin chamber 11 enters the storage tank 90 through the first valve port, the third valve port, and the third pipeline. In this embodiment, by setting a three-way valve, the soft water outlet of the water softener 10 can be connected to the mixing tank 60 and the storage tank 90 respectively, which facilitates the connection between the water softener 10 and the mixing tank 60 and the storage tank 90.

[0053] In some embodiments of the present invention, such as Figure 1 As shown, a switching valve 26 is connected in series on the second pipeline 322. The switching valve 26 controls the opening and closing of the second pipeline 322. During the acid rinsing stage, the switching valve 26 can be switched to the open state, allowing the acidic liquid in the water tank 90 to enter the washing chamber 201 through the second pipeline 322. After the water filling in the washing chamber 201 is complete, the switching valve 26 can be switched to the closed state, and the water tank 90 and the washing chamber 201 are no longer connected. This allows for convenient control of the opening and closing of the second pipeline 322.

[0054] In some embodiments of the present invention, such as Figure 1 As shown, when the switch valve 26 is in the open state, the acidic liquid in the water tank 90 is suitable for entering the washing chamber 201 under the action of gravity. For example, along the direction of gravity, the water tank 90 can be arranged above the preset washing liquid level in the washing chamber 201. In this way, there is no need to install a drive pump on the second pipeline 322, which can save energy.

[0055] A dishwasher 1000 according to a second aspect embodiment of the present invention includes: an inner tank 200 and a water inlet device 100 according to the first aspect embodiment of the present invention described above. The inner tank 200 has a washing chamber 201, an alkaline water outlet 21 is connected to the washing chamber 201 through a first flow path 31, and / or an acidic water outlet 22 is connected to the washing chamber 201 through a second flow path 32.

[0056] According to the dishwasher 1000 of the present invention, by providing the water inlet device 100 of the first aspect embodiment, the electrolysis module 20 of the water inlet module electrolyzes to generate acidic liquid and alkaline liquid. The alkaline liquid is used for washing in the dishwasher 1000, and the acidic liquid is used for rinsing in the dishwasher 1000. This can reduce or eliminate the need for consumables, reduce the operating cost of the dishwasher 1000, avoid chemical residues, inhibit the growth of bacteria, mold and other microorganisms, and improve the hygiene and safety of tableware. By providing a second ion exchange resin for neutralizing the alkali in the water in the resin chamber 11 of the water softener 10, the second ion exchange resin can remove the alkalinity in the inlet water, improve the electrolysis efficiency of the electrolysis module 20, avoid the problem of acid-base imbalance caused by high alkalinity, reduce ineffective neutralization losses, and improve the working effect of the electrolysis module 20.

[0057] According to a third aspect embodiment of the present invention, the dishwasher 1000 is a dishwasher 1000 according to the second aspect embodiment of the present invention described above. The control method includes: confirming that the dishwasher 1000 meets preset resin regeneration conditions; controlling the salt chamber 12 to deliver brine to the resin chamber 11 for regenerating the first ion exchange resin; and controlling the water tank 90 to deliver acidic liquid to the resin chamber 11 through the regeneration water path 37 for regenerating the second ion exchange resin.

[0058] In some examples, the preset resin regeneration conditions may include at least one of the following conditions: the dishwasher 1000 has accumulated a preset number of washes, the dishwasher 1000 has accumulated a preset water intake, the water hardness at the outlet of the water softener 10 has reached a preset hardness value, and the water alkalinity at the outlet of the water softener 10 has reached a preset alkalinity value.

[0059] When the dishwasher 1000 meets the preset resin regeneration conditions, it can enter the resin regeneration mode. During resin regeneration in the resin chamber 11, the salt chamber 12 can be controlled to first supply brine to the resin chamber 11 to regenerate the first ion exchange resin. Then, the water tank 90 can be controlled to supply acidic liquid to the resin chamber 11 through the regeneration water passage 37 to regenerate the second ion exchange resin. Alternatively, the water tank 90 can be controlled to first supply acidic liquid to the resin chamber 11 through the regeneration water passage 37 to regenerate the second ion exchange resin, and then the salt chamber 12 can be controlled to supply brine to the resin chamber 11 to regenerate the first ion exchange resin. In other words, the regeneration of the first and second ion exchange resins is performed sequentially but not synchronously, although the specific order of regeneration is not limited.

[0060] According to the control method of the dishwasher 1000 of the present invention, when the dishwasher 1000 meets the preset resin regeneration conditions, the first ion exchange resin and the second ion exchange resin in the resin chamber 11 can be regenerated successively by the brine in the salt chamber 12 and the acidic liquid in the water tank 90. ​​This can improve the convenience of regenerating the first ion exchange resin and the second ion exchange resin, reduce the resin regeneration cost, and improve the operating cost and service life of the dishwasher 1000.

[0061] In some embodiments of the present invention, such as Figure 1 As shown, the control method further includes: during the pre-wash stage, the main wash stage, and / or the alkaline rinsing stage, controlling the electrolysis module 20 to deliver alkaline liquid into the washing chamber 201 through the first flow path 31, and to deliver acidic liquid into the water tank 90 through the first pipeline 321.

[0062] For example, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201 only when the dishwasher 1000 enters the pre-wash stage; or, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201 only when the dishwasher 1000 enters the main wash stage; or, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201 only when the dishwasher 1000 enters the alkaline rinsing stage; or, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201 during both the pre-wash and main wash stages. During the pre-wash stage, the alkaline liquid is used to rinse away surface dust and loose stains on the tableware, thereby reducing the cleaning pressure during the main wash stage. During the main wash stage, the alkaline liquid effectively breaks down stubborn grease on the tableware.

[0063] For example, during the pre-wash stage, main wash stage, and / or alkaline rinsing stage, soft water in resin chamber 11 enters mixing tank 60 through second water passage 34. At the same time, brine in salt chamber 12 enters mixing tank 60 through first water passage 33. After the soft water and brine are mixed in mixing tank 60, they enter electrolysis module 20. The alkaline liquid and hydrogen generated by electrolysis module 20 in cathode chamber enter washing chamber 201 through alkaline outlet 21 and first flow path 31 for pre-washing, main washing, or rinsing of tableware. The acidic liquid generated by electrolysis module 20 in anode chamber enters storage tank 90 for temporary storage through acidic outlet 22 and first pipeline 321.

[0064] In the above embodiments, the alkaline liquid generated by the electrolysis module 20 has a strong cleaning ability, emulsifying grease and decomposing food residues. It can replace traditional chemical detergents, enabling dishwasher 1000 to perform consumable-free cleaning. This not only improves the cleaning efficiency and effect of dishwasher 1000 and reduces daily operating costs, but also avoids the health hazards caused by consumable residues, achieving green and environmentally friendly washing and improving the safety of tableware. At the same time, the alkaline liquid can flexibly adapt to the cleaning needs of the pre-wash and main wash stages. During the pre-wash stage, it quickly rinses away floating dust and debris from the surface of the tableware, while during the main wash stage, it deeply decomposes stubborn grease and burnt stains. It can be targeted to clean the tableware according to its actual degree of dirtiness, avoiding incomplete or over-washing, reducing water and electricity waste, and fully ensuring the cleaning effect on the surface of the tableware.

[0065] In some embodiments of the present invention, such as Figure 1 As shown, the control method includes: during the acidic rinsing stage, controlling the water tank 90 to supply acidic liquid into the washing chamber 201. This allows the acidic liquid to rapidly kill bacteria, fungi, and viruses on the surface of the tableware during the rinsing process, achieving highly efficient sterilization and disinfection, and significantly improving the hygiene and safety of the tableware. Simultaneously, the acidic liquid neutralizes any alkaline substances remaining from the washing stage, preventing the tableware from becoming sticky or turning white due to alkaline residue, and improving the cleanliness of the rinse.

[0066] In some examples, during the acidic rinsing stage, the water tank 90 supplies an acidic liquid with a pH of 4-6 to the washing chamber 201. For example, the pH of the acidic liquid supplied to the washing chamber 201 can be 4, 4.5, 5, 5.5, or 6. For instance, during the pre-wash or main wash stage, the acidic liquid generated by the electrolysis module 20 is supplied to the water tank 90. ​​At this time, the pH of the acidic liquid in the water tank 90 is 2-3. When it is determined that the acidic rinsing stage needs to be entered, the water inlet module adjusts the pH of the acidic liquid in the water tank 90, for example, by dilution, neutralization, or adsorption of ions, to raise the pH of the acidic liquid to 4-6, and then supplies the diluted acidic liquid to the washing chamber 201 to rinse the dishes. During the acidic rinsing stage, the water tank 90 is controlled to deliver acidic liquid with a pH value of 4-6 into the washing chamber 201. This can effectively rinse and disinfect the tableware while avoiding corrosion of the inner tank 200, the dish rack, and the tableware, thus ensuring the overall service life of the dishwasher 1000.

[0067] In some embodiments of the present invention, such as Figure 1 As shown, before controlling the water tank 90 to deliver acidic liquid to the washing chamber 201, the control method further includes: obtaining the total amount of acidic liquid delivered by the electrolysis module 20 to the water tank 90; confirming that the dishwasher 1000 has entered the acidic rinsing stage; and delivering the soft water in the resin chamber 11 to the water tank 90 through the third pipeline.

[0068] The total amount of acidic liquid delivered by the electrolysis module 20 to the water tank 90 can be determined based on the electrolysis time of the electrolysis module 20 or the total amount of alkaline liquid delivered by the electrolysis module 20 to the washing chamber 201. Alternatively, a level sensor or a load sensor can be installed in the water tank 90 to directly detect the total amount of acidic liquid in the water tank 90. ​​Then, based on the total amount of acidic liquid, the planned amount of water to be delivered to the water tank 90 can be determined, where the planned amount of water can be determined based on the pH value set for rinsing. Then, when the control module of the dishwasher 1000 receives the instruction for the acidic rinsing stage, it can connect the resin chamber 11 and the water tank 90 through the third pipe to deliver the planned amount of soft water into the water tank 90, thereby diluting the acidic liquid in the water tank 90 to the target pH value.

[0069] In the above embodiment, the total amount of acidic liquid in the water tank 90 is first obtained, and then soft water is injected into the water tank 90. ​​This can dilute the acidic liquid in the water tank 90 to a suitable pH range, thereby achieving effective rinsing and disinfection of tableware without corroding the inner liner 200, the bowl basket, and the tableware.

[0070] In some embodiments of the present invention, such as Figure 1 As shown, the pre-wash stage can perform one or more pre-washes. During at least one pre-wash, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201, and the dishwasher 1000 uses the alkaline liquid to pre-wash the dishes in the washing chamber 201. The number of pre-washes in the pre-wash stage can be flexibly adjusted according to the degree of soiling of the dishes; for example, the number of pre-washes can be one, two, three, or more. By flexibly setting the number of pre-washes in the pre-wash stage and combining it with alkaline liquid cleaning, some grease can be broken down in advance, preventing a large amount of dirt from spreading in the washing chamber 201, reducing the washing pressure in the main wash stage, and improving the cleaning efficiency of the dishwasher 1000.

[0071] In some embodiments of the present invention, such as Figure 1 As shown, the main wash stage may include one or more main washes. During at least one main wash, the electrolysis module 20 delivers alkaline liquid into the washing chamber 201, and the dishwasher 1000 uses the alkaline liquid to clean the dishes in the washing chamber 201. The number of main washes in the main wash stage can be flexibly adjusted according to the degree of soiling of the dishes; for example, the number of main washes can be one, two, three, or more. During the main wash process, the alkaline liquid continuously softens and removes grease, fully utilizing the cleaning power of the alkaline liquid. By flexibly setting the number of main washes in the main wash stage and coordinating with alkaline liquid cleaning, stubborn stains on the surface of the dishes can be broken down layer by layer, ensuring cleaning effect, avoiding incomplete cleaning of dishes, and improving the reliability of the control method.

[0072] In some embodiments of the present invention, such as Figure 1As shown, during the main wash stage, when the electrolysis module 20 delivers alkaline liquid into the washing chamber 201, the control method may further include: controlling the pH value of the alkaline liquid generated by the electrolysis module 20 to ensure that the pH value of the alkaline liquid meets a preset pH value. The preset pH value can be determined based on the degree of soiling of the tableware. The pH value of the alkaline liquid directly affects its cleaning ability and corrosiveness to the tableware; a higher pH value results in stronger cleaning ability but also greater corrosiveness. The dishwasher 1000 adjusts the operating parameters of the electrolysis module 20 according to the preset pH range to ensure that the pH value of the alkaline liquid remains stable within the preset range. For example, the preset pH value may be no less than 11. By controlling the pH value of the alkaline liquid, its cleaning ability can be matched to the degree of soiling of the tableware, adapting to different washing needs. This ensures effective cleaning while protecting the tableware from damage and extending its lifespan.

[0073] In some embodiments of the present invention, such as Figure 1 As shown, controlling the pH value of the alkaline liquid produced by the electrolysis module 20 can include adjusting the electrolysis power of the electrolysis module 20, thereby controlling the pH value of the alkaline liquid produced by the electrolysis module 20. The electrolysis power and the pH value of the alkaline liquid are positively correlated; the higher the power, the more vigorous the electrolysis reaction, and the higher the pH value of the generated alkaline liquid.

[0074] In this embodiment, the electrolysis power can be flexibly adjusted according to actual needs. For example, when a high-pH alkaline liquid is required, the electrolysis power can be increased to enhance the electrolysis reaction intensity; when a low-pH alkaline liquid is required, the electrolysis power can be decreased to weaken the electrolysis reaction intensity. For complex washing processes, the electrolysis power can be adjusted in stages to provide alkaline liquids with different pH values ​​at different washing stages. Controlling the pH value of the alkaline liquid by adjusting the electrolysis power is simple to operate and has a rapid response, enabling quick adaptation to different washing scenarios and achieving flexible control over the pH value of the alkaline liquid, thus improving the intelligence level of the dishwasher 1000.

[0075] In some embodiments of the present invention, such as Figure 1 As shown, the control method may further include: acquiring the washing difficulty of the dishes in the washing chamber 201, and controlling the pH value of the alkaline liquid according to the washing difficulty, wherein the greater the washing difficulty, the higher the pH value of the alkaline liquid. The washing difficulty can be determined by detecting the turbidity of the water flow in the dishwasher 1000, the oil content, or the type of stains on the dishes, or it can be manually selected by the user. By adjusting the pH value of the alkaline liquid according to the washing difficulty, precise cleaning can be achieved, avoiding waste of water and electricity resources or incomplete cleaning due to the pH value of the alkaline liquid being too high or too low, thus saving energy and resources while ensuring cleaning effect.

[0076] For example, if the water flow in the dishwasher 1000 has high turbidity and a high oil content, it can be determined as a high-difficulty wash, and the pH value of the alkaline liquid should be increased accordingly. Conversely, if the water flow has low turbidity and a low oil content, it can be determined as a low-difficulty wash, and the pH value of the alkaline liquid should be decreased accordingly. Similarly, tableware stains can be categorized as light oil stains, heavy scorch stains, sticky residue, and colored sauce residue. Tableware with light oil stains can be determined as a low-difficulty wash, and the pH value of the alkaline liquid should be decreased accordingly. Tableware with heavy scorch stains can be determined as a high-difficulty wash, and the pH value of the alkaline liquid should be increased accordingly. Tableware with sticky residue or colored sauce stains can have their pH value adjusted according to the stubbornness of the stains. Additionally, users can manually select the washing difficulty level according to the actual condition of the tableware, and the dishwasher 1000 will adjust the pH value of the alkaline liquid accordingly.

[0077] In some embodiments of the present invention, such as Figure 1 As shown, the preset pH value can be greater than or equal to 11. When the pH value of the alkaline liquid is greater than or equal to 11, it has a strong detergency and can quickly break down grease stains, making it suitable for cleaning tableware stained with heavy oil. By setting the preset pH value to be greater than or equal to 11, it can be ensured that the detergency of the alkaline liquid meets the cleaning needs of daily and heavily soiled tableware, while not damaging common tableware materials such as ceramic and stainless steel, thus meeting the washing needs of various tableware.

[0078] In some embodiments of the present invention, such as Figure 1 As shown, during the main wash stage, when the electrolysis module 20 delivers alkaline liquid to the washing chamber 201, the control method may further include: delivering nanobubbles into the washing chamber 201. Nanobubbles are characterized by their small size and strong adsorption capacity, enabling them to penetrate into the tiny crevices on the surface of tableware, adsorbing dirt particles, cleaning hard-to-reach areas, and improving the cleaning effect. Furthermore, the bursting of nanobubbles generates localized high pressure, which can further loosen stubborn stains adhering to the surface of the tableware, enhancing the cleaning effect through the physical action of bubble bursting. By delivering nanobubbles into the washing chamber 201, the cleaning ability of the dishwasher 1000 can be enhanced, and the cleaning depth of the dishwasher 1000 can be increased.

[0079] In some embodiments of the present invention, such as Figure 1 As shown, delivering nanobubbles into the washing chamber 201 may include: the electrolysis module 20 delivering the gas generated by electrolysis along with the alkaline liquid into the washing chamber 201. During the electrolysis process, the electrolysis module 20 generates hydrogen gas, which forms nano-sized nanobubbles under the action of high-pressure water flow, and can enter the washing chamber 201 along with the alkaline liquid. By utilizing the gas generated by electrolysis to generate nanobubbles and simultaneously delivering the nanobubbles and alkaline liquid, synergistic cleaning by the bubbles and alkaline liquid is achieved, improving washing efficiency. This eliminates the need for an additional nanobubble generating device, simplifying the structure of the dishwasher 1000.

[0080] In some embodiments of the present invention, such as Figure 1 As shown, during the rinsing stage, the dishwasher 1000 performs one or more rinses. During at least one rinse, the electrolysis module 20 can deliver acidic liquid into the washing chamber 201. The dishwasher 1000 uses this acidic liquid to rinse the dishes in the washing chamber 201. The number of rinses during the rinsing stage can be flexibly adjusted according to actual needs; for example, the number of rinses can be one, two, three, or more. For dishes with low washing difficulty, one rinse is sufficient for neutralization and disinfection. For dishes with high washing difficulty, multiple rinses are required to ensure that the acidic liquid completely neutralizes any alkaline liquid residue and kills bacteria. By flexibly setting the number of rinses and using acidic liquid cleaning, it is ensured that alkaline liquid residue on the surface of the dishes is completely neutralized, improving the sterilization effect, enhancing the cleanliness and safety of the dishes, and protecting the user's health.

[0081] In some embodiments of the present invention, such as Figure 1 As shown, the pre-wash stage, main wash stage, and rinsing stage can be performed sequentially; or, the main wash stage includes multiple main washes, the rinsing stage includes multiple rinsings, with at least one rinsing performed between two main washes, or, multiple main washes and multiple rinsings are performed alternately.

[0082] For example, the washing cycle of a dishwasher 1000 can be executed sequentially: the pre-wash, main wash, and rinse stages can be performed in that order. Alternatively, the washing cycle can be pre-wash, main wash, and rinse, suitable for everyday lightly soiled dishes. The pre-wash stage uses alkaline liquid to remove surface dust and loose grease, reducing the cleaning pressure on the main wash stage. The main wash stage adjusts the pH of the alkaline liquid to break down residual stains and simultaneously delivers nanobubbles to enhance the cleaning effect. The rinse stage uses acidic liquid to neutralize any alkaline residue and complete sterilization. The pre-wash, main wash, and rinse stages are seamlessly integrated, balancing cleaning efficiency with ease of operation.

[0083] For example, the washing cycle sequence of a dishwasher (model 1000) can alternate between the main wash and rinse cycles. The main wash cycle includes multiple washes, and the rinse cycle includes multiple rinses, with at least one rinse occurring between two main washes. The washing cycle sequence can be pre-wash, main wash, rinse, main wash, rinse, suitable for dishes with stubborn stains. Inserting a rinse between two main washes can neutralize some of the alkaline liquid residue on the surface of the dishes, while the water flow loosens deep-seated stubborn stains. The neutralized surface of the dishes is more easily penetrated by the alkaline liquid in the subsequent main wash, allowing the main wash to more efficiently break down residual stains and achieve a layer-by-layer cleaning effect.

[0084] For example, the washing cycle of a dishwasher 1000 can be executed sequentially with the main wash and rinse cycles. The main wash includes multiple washes, and the rinse cycle includes multiple rinses. These multiple main washes and multiple rinses can be performed alternately. The washing cycle sequence can be pre-wash, main wash, main wash, rinse, rinse, suitable for dishes with large areas of dirt. The first two main washes use a high-pH alkaline liquid combined with nano-bubbles to continuously impact and break down stubborn stains on the surface of the dishes. The last two rinses first use clean water to initially rinse away surface dirt, and then use an acidic liquid to deeply neutralize any remaining alkaline liquid and complete sterilization. The alternation of multiple main washes and multiple rinses can thoroughly remove stains and chemical residues from the surface of the dishes, ensuring the cleanliness and safety of the dishes.

[0085] In some examples, during the rinsing stage, the final rinse is performed with an acidic liquid; during the rinsing stage, the first rinse is performed with an alkaline liquid.

[0086] For example, the rinsing stage of the dishwasher 1000 includes a first rinse and a last rinse. The control method of the dishwasher 1000 includes: in the pre-wash stage, the main wash stage and the first rinse, the electrolysis module 20 delivers alkaline liquid to the washing chamber 201 through the first flow path 31, and the amount of water entering each time is 4L; in the last rinse of the rinsing stage, the water tank 90 delivers acidic liquid to the washing chamber 201, and the total amount of acidic liquid delivered is 4L.

[0087] In some embodiments of the present invention, the dishwasher 1000 may further include: a first sensor 70 and a flow control component. The first sensor 70 is disposed in the mixing tank 60 and is used to detect the conductivity of the liquid in the mixing tank 60. The flow control component is connected in series with the first water path 33 and is used to control the amount of liquid delivered from the salt chamber 12 to the mixing tank 60. The flow control component is electrically connected to the first sensor 70.

[0088] In some examples, the first sensor 70 can be a TDS (Total Dissolved Solids) sensor, an electrode conductivity sensor, an inductive conductivity sensor, an ultrasonic conductivity sensor, etc. Before the softened water and brine in the resin chamber 11 and the brine chamber 12 are introduced into the mixing tank 60, only raw water is introduced into the mixing tank 60. At this time, the first sensor 70 can directly detect the conductivity of the raw water. When the softened water and brine are introduced into the mixing tank 60, and the softened water and brine are mixed in the mixing tank 60 and enter the electrolysis module 20, the first sensor 70 can monitor the change in the conductivity of the water entering the mixing tank 60 in real time. The detection data can be transmitted to the dishwasher 1000 via electrical signals, or it can be directly presented in numerical form on the display panel of the dishwasher 1000, which makes it easy to intuitively understand the water quality.

[0089] In this embodiment, by setting the first sensor 70, the conductivity data of the incoming water in the mixing tank 60 can be obtained in real time and accurately, providing a data basis for adjusting the brine delivery volume and ensuring that the incoming water always meets the requirements of the electrolysis module 20. At the same time, the detection function of the first sensor 70 can realize real-time monitoring of the raw water quality, promptly detect water quality abnormalities or water circuit failures, and improve the safety and intelligence level of the dishwasher 1000.

[0090] In some examples, the flow control device can be a pump or valve. When the first sensor 70 detects that the conductivity of the inlet water in the mixing tank 60 is lower than the target value, the flow control device can increase the opening or increase the pump speed to increase the amount of brine delivered from the brine chamber 12 to the mixing tank 60. When the inlet water conductivity is detected to be close to the target value, the flow control device can decrease the opening, reduce the pump speed, or shut down directly to reduce the amount of brine delivered, thereby achieving dynamic adjustment of the inlet water conductivity in the mixing tank 60. By setting the flow control device and electrically connecting it to the first sensor 70, the brine delivery amount can be adjusted according to the received signal from the first sensor 70, controlling the brine delivery and ensuring that the inlet water conductivity remains stable within the target range, thus reducing the electrolysis energy consumption of the dishwasher 1000.

[0091] It should be noted that the conductivity of raw water in a conventional dishwasher 1000 is relatively low. This not only results in higher operating power and energy consumption for the electrolysis module 20, but also imposes higher compatibility standards on the electronic control hardware of the dishwasher 1000, affecting its practical application compatibility.

[0092] In this embodiment, by setting a first sensor 70 in the dishwasher 1000, the conductivity of the inlet water in the mixing tank 60 can be precisely controlled in combination with the different raw water quality conditions across the country, so that the conductivity is stably within the conductivity range required by the electrolysis module 20, thereby effectively adapting to the differences in water quality in different regions and taking into account the working efficiency and practical application effect of the electrolysis module 20.

[0093] In some embodiments of the present invention, the flow control component can be a water pump, or it can be a control valve. For example, the flow control component can be a water pump for actively delivering brine, achieving active and quantitative delivery of brine to adapt to different flow requirements. The water pump can be a micro gear pump to precisely control the brine delivery volume, suitable for low-flow, high-precision adjustment scenarios. Alternatively, the flow control component can be a control valve for adjusting the brine flow rate through its opening degree. It has a simple structure and low cost, and can be flexibly selected according to the actual scenario. The control valve can be an electric proportional regulating valve to achieve linear control of the brine delivery volume, suitable for adjustment scenarios with different conductivity. Or, the control valve can be a solenoid valve to achieve rapid on / off switching of the brine delivery volume, suitable for scenarios requiring frequent adjustment. By selecting different types of flow control components, the dishwasher 1000 can be adapted to different usage scenarios, improving its versatility and adaptability.

[0094] In some embodiments of the present invention, the dishwasher 1000 may further include a control module connected to the first sensor 70 and a flow control component. The control module controls the flow control component based on the conductivity value detected by the first sensor 70 to control the amount of liquid delivered from the brine chamber 12 to the mixing tank 60. The control module may be a microcontroller, microprocessor, embedded controller, etc. The control module pre-stores the target range and adjustment algorithm for the inlet water conductivity. When the first sensor 70 transmits the detected inlet water conductivity data to the control module, the control module outputs a corresponding control signal to the flow control component to control the brine delivery volume. By controlling the flow control component based on the conductivity value detected by the first sensor 70, automated adjustment of the brine delivery can be achieved without manual intervention, improving the intelligence level of the dishwasher 1000 and ensuring stable inlet water conductivity in the mixing tank 60.

[0095] In some embodiments of the present invention, the dishwasher 1000 may further include a flow sensor for detecting the inlet water flow rate of the dishwasher 1000. The flow sensor is electrically connected to a control module, and the control module controls the amount of liquid delivered from the salt chamber 12 to the mixing tank 60 based on the inlet water flow rate detected by the flow sensor. For example, the flow sensor may be a turbine flow meter, an ultrasonic flow meter, an electromagnetic flow meter, a vortex flow meter, etc. The installation position of the flow sensor can be flexibly set. For example, the flow sensor can be connected in series on the upstream side of the water softener 10 in the direction of water inlet flow to directly detect the raw water flow rate entering the dishwasher 1000. Alternatively, the flow sensor can be connected in series between the mixing tank 60 and the electrolysis module 20 to detect the inlet water flow rate entering the electrolysis module 20, which is consistent with the raw water flow rate. Or, the flow sensor can be connected in series at the outlet of the electrolysis module 20. Since the acidic liquid and alkaline liquid generated by the electrolysis module 20 are not used simultaneously during the washing process of the dishwasher 1000, the detection value of the flow sensor needs to be corrected in combination with the preset generation ratio of acidic liquid and alkaline liquid to indirectly estimate the raw water flow rate.

[0096] In this embodiment, by setting a flow sensor, the raw water flow data of the dishwasher 1000 can be collected in real time. The control module can dynamically adjust the amount of brine delivered from the brine chamber 12 to the mixing tank 60 based on the raw water flow data, further improving the accuracy of the inlet water conductivity adjustment in the mixing tank 60, adapting to different raw water flow scenarios, and ensuring stable electrolysis effect. For example, when the raw water flow increases, the control module will correspondingly increase the brine delivery volume to avoid the inlet water conductivity deviating from the target range due to fluctuations in the raw water flow. At the same time, the detection data of the flow sensor can also help the control module determine whether the raw water is normal. If an abnormal flow is detected, the control module can trigger an alarm signal to remind the user to check whether the raw water circuit is blocked or the water supply is interrupted, improving the safety and fault warning capability of the dishwasher 1000.

[0097] In some embodiments of the present invention, the flow sensor can be connected in series on the upstream side of the water softener 10 in the direction of water inlet flow. The flow sensor can directly detect the flow rate of the raw water entering the dishwasher 1000, which is convenient for detection. The control module can estimate the brine delivery volume based on the raw water flow rate and the required inlet water conductivity, avoiding delays in conductivity adjustment due to the lag in the flow sensor's detection of the raw water flow rate. At the same time, arranging the flow sensor on the upstream side of the water softener 10 in the direction of water inlet flow keeps the flow sensor away from the corrosive liquid in the brine chamber 12, reducing the risk of corrosion of the flow sensor, extending its service life, and reducing maintenance costs.

[0098] In some embodiments of the present invention, the dishwasher 1000 may further include a second sensor, which is used to detect the conductivity of the raw water entering the dishwasher 1000 and is electrically connected to the control module. The second sensor may be a TDS (Total Dissolved Solids) sensor, an electrode-type conductivity sensor, an inductive conductivity sensor, an ultrasonic conductivity sensor, etc. The second sensor may be positioned upstream of the water softener 10 in the direction of water inlet flow to directly detect the conductivity of the raw water entering the dishwasher 1000. The raw water conductivity data can be used as initial parameters for the control module to calculate the brine delivery volume. The electrical connection between the second sensor and the control module allows the detected raw water conductivity data to be transmitted to the control module in real time. The control module can adjust the brine delivery volume according to changes in the raw water conductivity; for example, when the raw water conductivity is high, the brine delivery volume can be appropriately reduced, and when the raw water conductivity is low, the brine delivery volume can be appropriately increased, so that the conductivity of the water entering the mixing tank 60 quickly reaches the target range.

[0099] In this embodiment, by setting a second sensor, the raw water conductivity data of the dishwasher 1000 can be acquired in real time. The control module combines the raw water conductivity and raw water flow rate to provide data basis for adjusting the brine delivery volume, avoiding errors in adjusting the inlet water conductivity due to fluctuations in the raw water conductivity. At the same time, the detection function of the second sensor can realize real-time monitoring and long-term monitoring of the raw water quality, promptly detecting water quality abnormalities or water circuit faults. By analyzing the trend of raw water conductivity changes through the control module, the ion exchange resin of the water softener 10 can be replaced in a timely manner or the soft water regeneration salt in the brine chamber 12 can be replenished, ensuring that the water softener 10 is always in good working condition, and improving the maintenance convenience, safety, and intelligence level of the dishwasher 1000.

[0100] In some embodiments of the present invention, the first sensor 70 can be a TDS sensor. The TDS sensor indirectly reflects the conductivity of the influent water in the mixing tank 60 by detecting the total dissolved solids content, facilitating the control module's calculation of the brine delivery volume, simplifying the control algorithm, and improving conductivity regulation efficiency. The TDS sensor has the characteristics of a wide detection range, fast response speed, corrosion resistance, and high detection accuracy, accurately capturing real-time changes in the conductivity of the influent water. At the same time, the TDS sensor is compact, easy to install and arrange within the mixing tank 60, and convenient for daily use and maintenance. Using a TDS sensor as the first sensor 70 provides reliable data for the adjustment of the flow control components, ensuring the accuracy and stability of the influent water conductivity detection in the mixing tank 60, and improving the operational stability of the dishwasher 1000.

[0101] In some embodiments of the present invention, the second sensor can be a TDS sensor. The TDS sensor indirectly reflects the conductivity of the raw water in the dishwasher 1000 by detecting the total dissolved solids content in the raw water. This allows the control module to combine the raw water flow data collected by the flow sensor to estimate the amount of brine delivered from the brine chamber 12 to the mixing tank 60. The TDS sensor has the characteristics of wide detection range, fast response speed, corrosion resistance, and high detection accuracy. It can accurately capture real-time changes in the conductivity of the raw water in the dishwasher 1000, providing reliable data for water quality monitoring. At the same time, the TDS sensor is small in size, easy to install in the raw water circuit, and convenient for daily use and maintenance. Using the TDS sensor as the second sensor provides data for the comprehensive control of the control module, ensuring the accuracy of water quality monitoring and the stability of control, and improving the operational stability of the dishwasher 1000.

[0102] In some embodiments of the present invention, the dishwasher 1000 may further include a third sensor 300, which is disposed within the inner tub 200 and is a TDS sensor. The third sensor 300 indirectly reflects the conductivity of the liquid within the inner tub 200 by detecting the total dissolved solids content in the water, and monitors the water quality status in real time during the washing and rinsing stages of the dishwasher 1000, thereby determining the cleanliness of the tableware and the residual amount of the electrolyzed liquid. After the rinsing stage, if the TDS value of the residual liquid detected by the third sensor 300 is higher than a preset threshold, the dishwasher 1000 will enter an additional rinsing stage until the value meets the standard and the tableware is clean and meets the washing requirements.

[0103] In this embodiment, the TDS sensor has a wide detection range, fast response, corrosion resistance, and high accuracy. Its compact size allows for flexible placement within the inner tank 200, making it convenient to use and maintain. The detection data from the third sensor 300 can be linked with the first sensor 70 and the second sensor to achieve water quality control throughout the entire washing process of the dishwasher 1000, from water intake to washing. It can also serve as a basis for adaptive adjustment during the washing stage, ensuring effective cleaning of tableware, preventing residual wastewater from affecting health, and preventing over-washing that wastes energy, thus improving the intelligence, reliability, and user experience of the dishwasher 1000.

[0104] In some embodiments of the present invention, such as Figure 1 As shown, the control method of the dishwasher 1000 further includes: obtaining the target conductivity of the liquid in the mixing tank 60; and controlling the amount of liquid delivered from the salt chamber 12 to the mixing tank 60 according to the target conductivity.

[0105] like Figure 1 As shown, the target conductivity can be obtained through various means. For example, the target conductivity can be set according to the actual water quality, or the target conductivity can be set by the control module based on conductivity adjustment data from historical washing, or the target conductivity can be set according to the temperature, operating power, and other conditions of the electrolysis module 20, ensuring the safe operation of the electrolysis module 20. Combining these multiple acquisition methods improves the flexibility and accuracy of target conductivity determination, providing a reasonable basis for subsequent control of the brine delivery volume, and enabling the dishwasher 1000's control method to adapt to diverse usage needs and operating conditions.

[0106] like Figure 1 As shown, the brine chamber 12 delivers brine to the mixing tank 60 via the first water path 33. The first water path 33 is connected in series with a flow controller. The control module can receive the inlet water conductivity detected by the first sensor 70 in real time and compare it with the target conductivity. If the inlet water conductivity is lower than the target conductivity, the control module outputs a control signal to the flow controller to increase the opening of the flow controller or increase the pump speed, thereby increasing the amount of brine delivered from the brine chamber 12 to the mixing tank 60. If the inlet water conductivity approaches the target conductivity, the control module controls the flow controller to decrease the opening or reduce the pump speed, thereby reducing the amount of brine delivered and ensuring that the inlet water conductivity in the mixing tank 60 reaches the target conductivity value.

[0107] In this embodiment, the flow control component can be adjusted by the control module according to the comparison result between the target conductivity and the conductivity of the inlet water, so as to achieve precise control of the brine delivery volume, ensure that the conductivity of the inlet water in the mixing tank 60 is stable within the target conductivity range, reduce the operating power of the electrolysis module 20, provide a guarantee for the electrolysis module 20 to efficiently generate the electrolyte, and improve the convenience of the control method of the dishwasher 1000.

[0108] In some embodiments of the present invention, such as Figure 1 As shown, obtaining the target conductivity of the liquid in the mixing tank 60 may include: obtaining the raw water conductivity and raw water flow rate of the dishwasher 1000, obtaining the preset pH value of the liquid required for washing in the inner tank 200, and obtaining the operating power of the electrolysis module 20; the target conductivity can be obtained based on the raw water conductivity, raw water flow rate, preset pH value, and operating power.

[0109] In some examples, such as Figure 1 As shown, the conductivity of the raw water can be obtained by either the second sensor or the first sensor 70. For example, the second sensor is positioned upstream of the water inlet flow direction of the water softener 10, directly detecting the raw water conductivity value, and the detection data is transmitted to the control module in real time. Alternatively, when the water softener 10 is not supplying softened water and brine to the mixing tank 60, only raw water is introduced into the mixing tank 60; in this case, the conductivity detected by the first sensor 70 is the raw water conductivity. The raw water flow rate can be obtained by a flow sensor, which is positioned upstream of the water inlet flow direction of the water softener 10, and can directly detect the raw water flow rate.

[0110] The preset pH value of the liquid required for washing in the inner tank 200 is set by the dishwasher 1000 according to the specific washing stage. For example, the preset pH value for the main wash stage of the dishwasher 1000 is strongly alkaline to enhance the cleaning power. The operating power of the electrolysis module 20 can be obtained from the operating power of the dishwasher 1000. By acquiring the raw water conductivity, raw water flow rate, preset pH value, and operating power respectively, all factors affecting the target conductivity can be comprehensively considered, providing a comprehensive and reliable data basis for obtaining the target conductivity and ensuring the rationality and accuracy of the target conductivity.

[0111] In some examples, such as Figure 1 As shown, the target conductivity can be obtained based on the acquired raw water conductivity, raw water flow rate, preset pH value, and operating power. The specific range of the target conductivity is obtained through experimental simulation. During the experiment, by changing the values ​​of raw water conductivity, raw water flow rate, preset pH value, and operating power, the conductivity of the influent in the mixing tank 60 was recorded when the acidic and alkaline liquids produced by the electrolysis module 20 reached the preset pH value under different combinations. Through data fitting and analysis, a mathematical model was established between the raw water conductivity, raw water flow rate, preset pH value, operating power, and target conductivity. Establishing a mathematical model through experimental simulation to obtain the target conductivity ensures a high degree of matching between the target conductivity and actual operating conditions, avoiding large deviations between theoretical calculations and actual situations. At the same time, the accumulation and fitting of experimental data can cover various operating conditions, making the acquisition of the target conductivity applicable to different regional water qualities and different washing needs, thus improving the adaptability and accuracy of the control method.

[0112] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0113] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0114] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0115] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0116] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water inlet device (100), characterized in that, For a dishwasher (1000) having an inner tub (200) defining a washing chamber (201), characterized in that the water inlet device (100) comprises: A water softener (10) has a resin chamber (11) and a salt chamber (12). The resin chamber (11) is provided with a first ion exchange resin and a second ion exchange resin. The first ion exchange resin is suitable for replacing metal ions in the water, and the second ion exchange resin is suitable for reacting with alkali in the water. An electrolysis module (20) has an electrolysis inlet (23), an acidic outlet (22), and an alkaline outlet (21). The electrolysis inlet (23) is connected to the resin chamber (11). The electrolysis module (20) is configured to electrolyze water entering the electrolysis module (20) into an acidic liquid and an alkaline liquid. The alkaline outlet (21) is connected to the washing chamber (201) through a first flow path (31), and / or the acidic outlet (22) is connected to the washing chamber (201) through a second flow path (32).

2. The water inlet device (100) according to claim 1, characterized in that, The first ion exchange resin is a sodium-type ion exchange resin, and / or the second ion exchange resin is a hydrogen-type ion exchange resin.

3. The water inlet device (100) according to claim 2, characterized in that, The first ion exchange resin is a sodium-type strong acid ion exchange resin with sodium sulfonate groups, and / or the second ion exchange resin is a hydrogen-type weak acid ion exchange resin with carboxylic acid groups.

4. The water inlet device (100) according to claim 1, characterized in that, The second flow path (32) includes a first pipe (321) and a second pipe (322). The water inlet device (100) also includes a water storage tank (90), which has a water inlet (91) and a first outlet (92). The first pipe (321) is connected between the acidic water outlet (22) and the water inlet (91). One end of the second pipe (322) is connected to the first outlet (92) and the other end is connected to the washing chamber (201).

5. The water inlet device (100) according to claim 4, characterized in that, The water tank (90) also has a second outlet (93), which is connected to the resin chamber (11) via a regeneration water passage (37) for supplying acidic liquid to the resin chamber (11) for regenerating the second ion exchange resin.

6. The water inlet device (100) according to any one of claims 1-5, characterized in that, The salt chamber (12) is connected to the electrolysis module (20) through the first water passage (33) to deliver brine to the electrolysis module (20), and the resin chamber (11) is connected to the electrolysis module (20) through the second water passage (34).

7. The water inlet device (100) according to claim 6, characterized in that, The water inlet device (100) also includes a mixing tank (60), which is connected between the water softener (10) and the electrolysis module (20). The first water path (33) and the second water path (34) are both connected to the electrolysis module (20) through the mixing tank (60).

8. The water inlet device (100) according to claim 1, characterized in that, The electrolysis module (20) has an anode chamber and a cathode chamber, and the electrolysis module (20) has a flow control structure (25) configured to make the ratio of the fluid flow rate of the anode chamber to the fluid flow rate of the cathode chamber less than 1 / 2.

9. A dishwasher (1000), characterized in that, include: Inner liner (200), the inner liner (200) having a washing chamber (201); According to any one of claims 1-8, the alkaline water outlet (21) is connected to the washing chamber (201) through a first flow path (31), and / or the acidic water outlet (22) is connected to the washing chamber (201) through a second flow path (32).

10. A control method for a dishwasher (1000), characterized in that, The dishwasher (1000) is the dishwasher (1000) according to claim 9, and the control method includes: Confirm that the dishwasher (1000) meets the preset resin regeneration conditions; The brine chamber (12) is controlled to supply brine to the resin chamber (11) for regenerating the first ion exchange resin; The water tank (90) is controlled to deliver acidic liquid to the resin chamber (11) through the regeneration water path (37) for regenerating the second ion exchange resin.

11. The control method for the dishwasher (1000) according to claim 10, characterized in that, The control method further includes: During the pre-wash stage, main wash stage and / or alkaline rinsing stage, the electrolysis module (20) delivers alkaline liquid into the washing chamber (201) through the first flow path (31) and delivers acidic liquid into the water tank (90) through the first pipeline (321); During the acid rinsing stage, the water tank (90) delivers acidic liquid into the washing chamber (201) through the second pipeline (322).

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