Dish washing machine control method and dish washing machine

Abstract

The invention relates to the technical field of washing equipment, in particular to a dish-washing machine control method and a dish-washing machine, and aims to solve the problem that an existing dish-washing machine cannot give consideration to the washing effect, energy conservation and environmental protection at the same time. In order to achieve the purpose, the dish washing machine comprises a water storage tank, a spraying device and a heating device, the water storage tank can store washing water, the spraying device can pump the washing water in the water storage tank and spray and wash tableware, and the heating device can heat the washing water in the water storage tank to a certain temperature; the control method comprises the following steps: judging the acid-base property of stains on tableware; the temperature of the washing water and / or the spraying time of the spraying device are / is controlled according to the acid-base property of the stains. Through the arrangement, tableware with different stain types can be accurately cleaned, the comprehensive energy consumption and the water consumption can be reduced while the washing effect is guaranteed, the use cost is controlled, and the use experience of a user is improved.

Description

Technical Field

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

[0002] In recent years, dishwashers have become increasingly popular due to their high cleaning efficiency. They free up users' hands and make what used to be tedious housework easier and more efficient.

[0003] To further improve the washing performance of dishwashers and meet increasingly higher user demands, engineers are constantly improving and upgrading them. For example, they are adding multiple washing modes to increase washing efficiency and enhance the washing effect.

[0004] However, existing dishwashers still have the problem of not being able to simultaneously achieve good washing results and energy efficiency.

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

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that existing dishwashers cannot simultaneously achieve both washing effect and energy saving and environmental protection.

[0007] In a first aspect, the present invention provides a control method for a dishwasher, the dishwasher including a water storage tank, a spray device, and a heating device, the water storage tank being capable of storing washing water, the spray device being capable of drawing washing water from the water storage tank to spray and rinse tableware, and the heating device being capable of heating the washing water to a certain temperature, the control method including: determining the acidity or alkalinity of stains on the tableware; and controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains.

[0008] In a preferred embodiment of the above control method, the dishwasher includes a first main wash mode, a second main wash mode, and a third main wash mode. The step of "controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains" specifically includes: selectively executing the first main wash mode, the second main wash mode, or the third main wash mode according to the acidity or alkalinity of the stains; wherein, in the first, second, and third main wash modes, the temperature of the washing water and the spraying time of the spray device are different.

[0009] In the preferred embodiment of the above control method, the step of "selectively executing the first main wash mode, the second main wash mode, or the third main wash mode according to the acidity or alkalinity of the stain" specifically includes: if the stain is acidic, then the first main wash mode is executed; and / or if the stain is neutral, then the second main wash mode is executed; and / or if the stain is alkaline, then the third main wash mode is executed.

[0010] In the preferred embodiment of the above control method, before "determining the acidity or alkalinity of the stains on the tableware", the control method of the present invention further includes: executing a pre-wash mode, wherein no detergent is added to the washing water in the pre-wash mode, and the temperature of the washing water and the spraying time of the spraying device are different from the three main wash modes; the step of "determining the acidity or alkalinity of the stains on the tableware" specifically includes: obtaining the pH value of the wastewater in the water storage tank after the pre-wash mode is completed, and recording it as the first pH value; determining the acidity or alkalinity of the stains on the tableware based on the first pH value.

[0011] In a preferred embodiment of the above control method, after the first main wash mode, the second main wash mode, or the third main wash mode has ended, the control method of the present invention further includes: obtaining the turbidity of the sewage in the water storage tank; comparing the turbidity with a preset turbidity; selectively ending the main wash task based on the comparison result, or re-executing one of the three main wash modes.

[0012] In the preferred embodiment of the above control method, the step of "selectively ending the main washing task based on the comparison result, or re-executing one of the three main washing modes" specifically includes: if the turbidity is not greater than the preset turbidity, then ending the main washing task; and / or if the turbidity is greater than the preset turbidity, then further obtaining the pH value of the wastewater, denoted as the second pH value; based on the second pH value, selectively executing the first main washing mode, the second main washing mode, or the third main washing mode once more before ending the main washing task.

[0013] In the preferred embodiment of the above control method, while "selectively executing the first main wash mode, the second main wash mode, or the third main wash mode", the control method of the present invention further includes: selectively adding an acidic neutralizer or an alkaline neutralizer to the water storage tank according to the acidity or alkalinity of the stain.

[0014] In the preferred embodiment of the above control method, the step of "selectively adding an acidic neutralizer or an alkaline neutralizer to the water tank according to the acidity or alkalinity of the stain" specifically includes: if the stain is acidic, then adding the alkaline neutralizer; and / or if the stain is alkaline, then adding the acidic neutralizer.

[0015] In a preferred embodiment of the above control method, after the main wash task is completed, the control method of the present invention further includes: executing a rinsing mode; in the rinsing mode, the spraying time of the spray device is different from that of the three main wash modes and the pre-wash mode.

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

[0017] With the above technical solution adopted, the dishwasher of the present invention includes a water storage tank, a spray device, and a heating device. The water storage tank can store washing water, the spray device can draw washing water from the water storage tank to spray and rinse the tableware, and the heating device can heat the washing water to a certain temperature. The control method includes: determining the acidity or alkalinity of stains on the tableware; and controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains. Through this configuration, the temperature of the washing water and / or the rinsing time can be adaptively adjusted according to different types of stains on the tableware, achieving precise stain removal. This not only improves the washing effect but also saves energy and water consumption, achieving the goal of energy saving and efficiency improvement.

[0018] Furthermore, the dishwasher of the present invention includes a first main wash mode, a second main wash mode, and a third main wash mode. The step of "controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains" specifically includes: selectively executing the first main wash mode, the second main wash mode, or the third main wash mode according to the acidity or alkalinity of the stains; wherein, in the first, second, and third main wash modes, the temperature of the washing water and the spraying time of the spray device are different. Through this setting, the dishwasher is configured with three main wash modes to respectively match stains of different acidity or alkalinity on the tableware, achieving precise stain removal, improving the cleaning effect while reducing energy consumption and water usage.

[0019] Furthermore, the control method of the present invention further includes: if the stain is acidic, then executing a first main wash mode; and / or if the stain is neutral, then executing a second main wash mode; and / or if the stain is alkaline, then executing a third main wash mode. Through this setting, the acidity or alkalinity of the stain is classified as acidic, neutral, and alkaline, so that cleaning is performed by executing the first, second, and third main wash modes, achieving precise removal of the stain.

[0020] Furthermore, before "determining the acidity or alkalinity of stains on tableware," the control method of the present invention further includes: executing a pre-wash mode, in which no detergent is added to the washing water, and the temperature of the washing water and the spraying time of the spray device are different from those of the three main wash modes; the step of "determining the acidity or alkalinity of stains on tableware" specifically includes: obtaining the pH value of the wastewater in the water tank after the pre-wash mode ends, and recording it as the first pH value; determining the acidity or alkalinity of stains on tableware based on the first pH value. With this setup, on the one hand, the stains accumulated on the tableware can be pre-treated, softening and decomposing them first, reducing the cleaning difficulty of the subsequent main wash mode, and further improving the washing effect of the dishwasher; on the other hand, this detection method can accurately detect the acidity or alkalinity of the stains, providing an accurate basis for selecting different main wash modes; and thirdly, the principle of this detection method is simple and easy to implement, without requiring excessive detection equipment.

[0021] Furthermore, after the first main wash mode, the second main wash mode, or the third main wash mode has ended, the control method of the present invention further includes: obtaining the turbidity of the sewage in the water storage tank; comparing the turbidity with a preset turbidity; selectively ending the main wash task based on the comparison result, or re-executing one of the three main wash modes.

[0022] Furthermore, the control method of the present invention further includes: if the turbidity is not greater than a preset turbidity, then ending the main wash task; and / or if the turbidity is greater than the preset turbidity, then further obtaining the pH value of the wastewater, recording it as a second pH value; based on the second pH value, selectively executing a first main wash mode, a second main wash mode, or a third main wash mode once more before ending the main wash task. With this setting, the amount of stains on the tableware can be assessed based on the turbidity of the wastewater after the first main wash mode, thereby assessing the difficulty of cleaning the tableware, so that the number of main washes can be selectively increased according to the difficulty of cleaning the tableware, achieving the purpose of enhancing the washing effect.

[0023] Furthermore, the control method of the present invention further includes: while "selectively executing the first main wash mode, the second main wash mode or the third main wash mode", the control method of the present invention also includes: selectively adding an acidic neutralizer or an alkaline neutralizer into the water tank according to the acidity or alkalinity of the stain.

[0024] Furthermore, the control method of the present invention further includes: if the stain is acidic, then adding an alkaline neutralizing agent; and / or if the stain is alkaline, then adding an acidic neutralizing agent. With this arrangement, the acidity or alkalinity of the stain can be neutralized using a neutralizing agent, further enhancing the washing effect.

[0025] Furthermore, after the main wash cycle is completed, the control method of the present invention further includes: executing a rinsing mode; in the rinsing mode, the spraying time of the spray device is different from that of the three main wash modes and the pre-wash mode. With this setting, detergent residue left on the dishes during the main wash cycle can be rinsed away with clean water, avoiding any harm to human health caused by detergent.

[0026] Furthermore, the dishwasher provided by the present invention, based on the above-mentioned control method, possesses the technical effects of the above-mentioned control method. Compared with the dishwasher before the improvement, the dishwasher of the present invention has significantly improved washing effect, energy saving and economy, resulting in a better user experience. Attached Figure Description

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a flowchart of the control method for the dishwasher of the present invention;

[0029] Figure 2 This is a flowchart of an embodiment of the dishwasher control method of the present invention. Detailed Implementation

[0030] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that in the description of this invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] As pointed out in the background art, existing dishwashers cannot simultaneously achieve both effective cleaning and energy conservation. This invention provides a dishwasher control method and dishwasher that, by detecting the acidity or alkalinity of stains on the dishes, precisely controls the water temperature and spray time during the main wash cycle. Furthermore, it can continue to detect the turbidity of the wastewater after one main wash cycle and control the number of main wash cycles based on the turbidity, achieving precise cleaning and energy efficiency.

[0033] Specifically, the dishwasher of the present invention includes a water storage tank, a spray device, and a heating device. The water storage tank can store washing water, the spray device can draw washing water from the water storage tank to rinse the dishes, and the heating device can heat the washing water in the water storage tank to a certain temperature.

[0034] For example, the water storage tank of the present invention is located at the bottom of the dishwasher. When the dishwasher is running, the water storage tank can be filled with water by an external water source. The spray device is usually configured as multiple rotatable spray arms. During the operation of the spray device, it can draw the washing water in the water storage tank and spray high-pressure water jets onto the tableware to achieve the effect of rinsing the tableware. As the spray arms continuously spray water jets onto the tableware, the water jets will eventually all flow back into the water storage tank. Therefore, when the water storage tank reaches the calibrated value, the spray device can circulate the washing water in the water storage tank for rinsing.

[0035] The heating device can be installed in the water storage tank or spray device. It is usually set as an electric heating component such as an electric heating tube or electric heating wire. By controlling the start and stop of the heating device, the circulating washing water can be heated to the preset temperature. Under the washing of high temperature water flow, it is more conducive to softening and decomposing the stains on the tableware, making the stains easier to clean.

[0036] Based on the above-described dishwasher structure, the present invention also provides a dishwasher control method, such as... Figure 1 As shown, the control method of the present invention includes:

[0037] S200: Determine the acidity or alkalinity of stains on tableware;

[0038] S300: Control the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stain.

[0039] Because tableware holds a variety of foods, the stains left on it have different acidity or alkalinity. For example, tea stains are alkaline, while oil stains are acidic. If the same cleaning method (such as the same water temperature and spraying time) is used for different types of stains, the cleaning effect will be poor or the energy and water consumption will be high, making it impossible to achieve both simultaneously.

[0040] Based on this, the dishwasher of the present invention is equipped with an acid-alkalinity detection module, which determines the acidity or alkalinity of the stains by detecting the pH value of the stains. At the same time, since stains of different acidity or alkalinity exhibit different cleaning difficulties under different rinsing times and water temperatures, for example, alkaline substances are more likely to coagulate and are more difficult to dissolve than acidic or neutral substances, and are more likely to leave stubborn marks on tableware, making them more difficult to clean. Therefore, cleaning alkaline stains requires increasing the washing intensity, such as appropriately increasing the rinsing time and increasing the temperature of the washing water.

[0041] Therefore, the control method of the present invention can adaptively adjust the temperature of the washing water and / or the rinsing time according to the acidity or alkalinity of the stains, so as to achieve precise stain removal and achieve the best washing effect. At the same time, it also helps to reduce the overall energy consumption and water consumption of the dishwasher, thereby achieving the purpose of energy saving and efficiency improvement.

[0042] Furthermore, in a preferred embodiment of the present invention, detergents of different acidity or alkalinity can be selectively added according to the acidity or alkalinity of the stain, and the amount added can be precisely controlled according to the specific acidity or alkalinity of the stain to further improve the washing effect.

[0043] Preferably, such as Figure 2 As shown, the dishwasher of the present invention includes a first main wash mode, a second main wash mode, and a third main wash mode. The step of "controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains" specifically includes:

[0044] S310: Depending on the acidity or alkalinity of the stain, selectively execute the first main wash mode, the second main wash mode, or the third main wash mode;

[0045] In the first, second, and third main wash modes, the temperature of the washing water and the spraying time of the spray device are different.

[0046] Based on the above functional settings, the dishwasher of the present invention needs to go through a pre-wash stage, a main wash stage, and a rinsing stage in the entire washing process. Among them, in the main wash stage, the dishwasher of the present invention has three main wash modes set according to different washing intensities:

[0047] For example, in the first main wash mode, washing water is injected into the water storage tank, the heating device is controlled to heat the washing water in the water storage tank to a first temperature, detergent is added to the washing water in the water storage tank, and the spray device is controlled to run for a first time.

[0048] In the second main wash mode, wash water is injected into the water storage tank, the heating device is controlled to heat the wash water in the water storage tank to the second temperature, detergent is added to the wash water in the water storage tank, and the spray device is controlled to run for the second time.

[0049] In the third main wash mode, wash water is injected into the water storage tank, the heating device is controlled to heat the wash water in the water storage tank to the third temperature, detergent is added to the wash water in the water storage tank, and the spray device is controlled to run for the third time.

[0050] Among them, the second temperature is less than the first temperature, which is less than the third temperature, and the second time is less than the first time, which is less than the third time.

[0051] Preferably, the first temperature is set to 45°C, the second temperature is set to 40°C, and the third temperature is set to 50°C;

[0052] The first time interval is set to 60 minutes, the second time interval to 50 minutes, and the third time interval to 70 minutes.

[0053] This results in the washing intensity and energy consumption of the third main wash mode being greater than that of the first main wash mode, which in turn is greater than that of the second main wash mode.

[0054] By setting three main wash modes and detecting the acidity or alkalinity of stains before the main wash, the three main wash modes can be matched to stains with different acidity or alkalinity. Through precise control of the dishwasher, stains can be precisely removed, improving the washing effect while reducing the overall energy consumption and water consumption of the dishwasher.

[0055] Preferably, such as Figure 2 As shown, the steps of "selectively performing the first, second, or third main wash cycle based on the acidity or alkalinity of the stain" specifically include:

[0056] S311: If the stain is acidic, execute the first main wash cycle; and / or

[0057] S312: If the stain is neutral, perform a second main wash cycle; and / or

[0058] S313: If the stain is alkaline, perform the third main wash cycle.

[0059] Specifically, for acidic stains, which are of moderate cleaning difficulty, the system will automatically execute the first main wash mode with moderate cleaning intensity and energy consumption. For neutral stains, which are relatively easy to clean, the system will automatically execute the second main wash mode with the lowest cleaning intensity and energy consumption to reduce energy and water consumption. For alkaline stains, which are the most difficult to clean, the system will automatically execute the third main wash mode with the highest cleaning intensity and energy consumption to ensure the washing effect.

[0060] By precisely controlling the dishwasher, stains can be cleaned accurately, improving washing performance and reducing overall energy consumption and water usage.

[0061] Preferably, such as Figure 2 As shown, before "determining the acidity or alkalinity of stains on tableware", the control method of the present invention further includes:

[0062] S100: Execute the pre-wash mode. In the pre-wash mode, no detergent is added to the washing water, and the temperature of the washing water and the spraying time of the spray device are different from the three main wash modes.

[0063] Specifically, washing water is injected into the water storage tank, the heating device is controlled to heat the washing water in the water storage tank to a fourth temperature, and the spray device is controlled to run for a fourth time.

[0064] In this scheme, the fourth time is preferably set to 10 minutes and the fourth temperature is set to 30°C.

[0065] The pre-wash mode pre-treats the stains accumulated on the dishes by using warm water to soften and break them down, reducing the difficulty of cleaning and making the main wash mode easier, thus further improving the dishwasher's washing performance.

[0066] Continue reading Figure 2 The specific steps for "determining the acidity or alkalinity of stains on tableware" include:

[0067] S210: Obtain the pH value of the wastewater in the storage tank after the pre-wash mode ends, and record it as the first pH value;

[0068] S220: Determine the acidity or alkalinity of stains on tableware based on the first pH value.

[0069] For example, a pH value detection module is installed in the water storage tank, which can detect the pH value of the wastewater after rinsing the tableware in the pre-wash mode to determine the overall acidity and alkalinity of the stains.

[0070] Specifically, when the first pH value is between 0 and 7, it indicates that the stain is acidic; when the first pH value is between 7 and 14, it indicates that the stain is alkaline; and when the first pH value is equal to 7, it indicates that the stain is neutral.

[0071] This testing method can accurately detect the acidity or alkalinity of stains, providing a precise basis for selecting different main wash modes. At the same time, the testing method is technically mature and easy to implement, requiring only the installation of a pH meter, without the need for additional testing equipment.

[0072] Preferably, such as Figure 2 As shown, after the first main wash mode, the second main wash mode, or the third main wash mode has ended, the control method of the present invention further includes:

[0073] S400: Obtain the turbidity of the wastewater in the storage tank;

[0074] S500: Compares the turbidity with the preset turbidity;

[0075] S610: If the turbidity is not greater than the preset turbidity, then end the main wash task; and / or

[0076] S620: If the turbidity is greater than the preset turbidity, then the pH value of the wastewater is further obtained and recorded as the second pH value;

[0077] S630: Based on the second pH value, selectively execute the first main wash mode, the second main wash mode, or the third main wash mode once more before ending the main wash task.

[0078] For example, after the first main wash, the control method of the present invention can also detect the turbidity of the wastewater in the water tank at this time by using a turbidity sensor installed at the bottom of the water tank. Specifically, as the spray device operates, the amount of water stored in the water tank increases continuously. When the water level exceeds the height of the turbidity sensor, the turbidity sensor starts to work. It can detect the turbidity of the washing water in real time and send it to the controller of the dishwasher in a synchronous manner. The controller uses the turbidity of the washing water to assess the amount of oil accumulation.

[0079] It should be noted that since the turbidity of the washing water changes with the increase or decrease of the wastewater concentration, the system will use the maximum turbidity detected by the turbidity sensor during actual operation.

[0080] For example, the turbidity sensor uses an infrared sensing component to calculate the data received by the light and convert it into a change in turbidity output. When light passes through a certain amount of water, the amount of light transmitted depends on the degree of turbidity of the water, and the turbidity of the washing water is calculated accordingly. Therefore, the turbidity in the water tank is not a fixed value, but changes dynamically according to the actual situation during the washing process. It can be equivalent to data such as light transmittance. By comparing it with the preset turbidity in the system, the amount of dirt accumulation can be assessed.

[0081] According to the national drinking water standards, the turbidity of drinking water shall not exceed 1 NTU. When the water source and water purification technology are limited, the turbidity of drinking water shall not exceed 3 NTU. Therefore, the preset turbidity in this plan is preferably set at 5 NTU.

[0082] If the turbidity is not greater than the preset turbidity and the washing water is relatively clear, it means that the amount of stains on the dishes is small, and one main wash cycle is enough to clean the dishes, so you can end the main wash task directly.

[0083] If the turbidity is greater than the preset turbidity and the washing water is relatively cloudy, it means that there is a large amount of dirt accumulated on the dishes, and an additional main wash cycle is needed to clean the dishes.

[0084] In summary, adding turbidity detection allows us to assess the amount of stains on the dishes based on the turbidity of the wastewater after the first main wash, thereby assessing the difficulty of cleaning the dishes. This enables us to selectively increase the number of main washes based on the difficulty of cleaning the dishes, thus enhancing the washing effect.

[0085] Preferably, the step of "selectively executing the first main wash mode, the second main wash mode, or the third main wash mode again based on the second pH value" specifically includes:

[0086] The second pH value is compared with a preset value, which is preferably set to 7.

[0087] If the second pH value is greater than 0 and not greater than 7, then execute the first main wash mode again and then end the main wash task.

[0088] If the second pH value is 7, then execute the second main wash mode once more and then end the main wash task;

[0089] If the second pH value is greater than 7 and less than 14, then execute the third main wash mode once more and then end the main wash task.

[0090] The control logic here is the same as the first main wash mode, that is, the pH value range is divided into three intervals using preset values ​​to represent the acidic, neutral and alkaline intervals respectively. Then, the corresponding main wash mode is executed according to the interval of the second pH value. By selectively executing the first, second or third main wash mode, it matches acidic stains, neutral stains or alkaline stains respectively, so as to achieve precise removal of stains.

[0091] Preferably, while selectively executing the first main wash mode, the second main wash mode, or the third main wash mode, the control method of the present invention further includes:

[0092] Depending on the acidity or alkalinity of the stain, selectively add acidic or alkaline neutralizing agents to the water tank.

[0093] Among them, acidic neutralizers contain acidic substances such as citric acid, while alkaline neutralizers contain alkaline substances such as sodium hydroxide or calcium carbonate, which can neutralize the alkaline or acidic substances in the stains respectively.

[0094] Preferably, the step of "selectively adding an acidic neutralizer or an alkaline neutralizer to the water tank according to the acidity or alkalinity of the stain" specifically includes:

[0095] If the stain is acidic, add an alkaline neutralizer; and / or

[0096] If the stain is alkaline, add an acidic neutralizer.

[0097] Furthermore, in another preferred embodiment of the present invention, the amount of neutralizing agent can be precisely controlled according to the specific pH value of the stain to achieve a better acid-base neutralization effect and further enhance the washing effect.

[0098] Preferably, such as Figure 2 As shown, after the main washing task is completed, the control method of the present invention further includes:

[0099] S700: Execute rinsing mode;

[0100] In the rinsing mode, the spraying time of the spray device is different from that of the three main wash modes and the pre-wash mode.

[0101] After the main wash cycle is completed, the washing water containing detergent and stains in the tank is drained, and the stains and residues on the dishes are rinsed away. However, a large amount of detergent foam will still remain on the dishes and needs to be rinsed. At this time, the dishwasher enters the rinse cycle. Specifically, in the rinse cycle, the spray device is turned on separately and runs for the fifth time. In this solution, the fifth time is preferably set to 5 minutes, and no detergent is added. The dishes are repeatedly rinsed with clean water. After the rinse cycle ends, the entire washing process is completed, thereby rinsing away the detergent residue on the dishes from the main wash cycle and avoiding any harm to human health caused by detergent.

[0102] Furthermore, the dishwasher provided by the present invention, based on the above-mentioned control method, possesses the technical effects of the above-mentioned control method. Compared with the dishwasher before the improvement, the dishwasher of the present invention has significantly improved washing effect, energy saving and economy, resulting in a better user experience.

[0103] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control method for a dishwasher, the dishwasher comprising a water storage tank, a spray device, and a heating device, wherein the water storage tank is capable of storing washing water, the spray device is capable of drawing washing water from the water storage tank to spray and rinse tableware, and the heating device is capable of heating the washing water to a certain temperature, characterized in that... The control method includes: Determine the acidity or alkalinity of the stains on the tableware; The temperature of the washing water and / or the spraying time of the spraying device are controlled according to the acidity or alkalinity of the stain.

2. The control method according to claim 1, characterized in that, The dishwasher includes a first main wash mode, a second main wash mode, and a third main wash mode. The step of "controlling the temperature of the washing water and / or the spraying time of the spray device according to the acidity or alkalinity of the stains" specifically includes: Depending on the acidity or alkalinity of the stain, the first main wash mode, the second main wash mode, or the third main wash mode may be selectively executed. In the first, second, and third main wash modes, the temperature of the washing water and the spraying time of the spray device are different.

3. The control method according to claim 2, characterized in that, The step of "selectively executing the first main wash mode, the second main wash mode, or the third main wash mode according to the acidity or alkalinity of the stain" specifically includes: If the stain is acidic, then execute the first main wash mode; and / or If the stain is neutral, then execute the second main wash mode; and / or If the stain is alkaline, then execute the third main wash mode.

4. The control method according to claim 2, characterized in that, Before "determining the acidity or alkalinity of the stains on the tableware", the control method of the present invention further includes: Perform pre-wash mode; In the pre-wash mode, no detergent is added to the wash water, and the temperature of the wash water and the spraying time of the spray device are different from those of the three main wash modes. The specific steps of "determining the acidity or alkalinity of the stains on the tableware" include: The pH value of the wastewater in the water storage tank after the pre-washing mode is completed is obtained and recorded as the first pH value; The acidity or alkalinity of the stains on the tableware is determined based on the first pH value.

5. The control method according to claim 2, characterized in that, After the first main wash mode, the second main wash mode, or the third main wash mode has ended, the control method of the present invention further includes: Obtain the turbidity of the wastewater in the water storage tank; The turbidity is compared with a preset turbidity; Based on the comparison results, the main wash task can be selectively terminated, or one of the three main wash modes can be re-executed.

6. The control method according to claim 5, characterized in that, The steps of "selectively ending the main washing task based on the comparison results, or re-executing one of the three main washing modes" specifically include: If the turbidity is not greater than the preset turbidity, then the main wash task ends; and / or If the turbidity is greater than the preset turbidity, then the pH value of the wastewater is further obtained and recorded as the second pH value; Based on the second pH value, the first main wash mode, the second main wash mode, or the third main wash mode are selectively executed once more before the main wash task ends.

7. The control method according to claim 2, characterized in that, While selectively executing the first main wash mode, the second main wash mode, or the third main wash mode, the control method of the present invention further includes: Depending on the acidity or alkalinity of the stain, an acidic neutralizer or an alkaline neutralizer may be selectively added to the water storage tank.

8. The control method according to claim 7, characterized in that, The step of "selectively adding an acidic neutralizer or an alkaline neutralizer to the water storage tank according to the acidity or alkalinity of the stain" specifically includes: If the stain is acidic, then the alkaline neutralizing agent is added; and / or If the stain is alkaline, then the acidic neutralizing agent is added.

9. The control method according to claim 4, characterized in that, After the main washing task is completed, the control method of the present invention further includes: Perform a rinse cycle; In the rinsing mode, the spraying time of the spray device is different from that of the three main wash modes and the pre-wash mode.

10. A dishwasher, characterized in that, The dishwasher includes a controller configured to perform the control method according to any one of claims 1 to 9.

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