Dishwasher and control method thereof

Abstract

The embodiment of the application belongs to the household appliance technology and provides a dish washing machine and a control method thereof. The dish washing machine comprises: an inner container, which is formed with a washing cavity for containing dishes to be cleaned and washing water; a spraying assembly, which is configured to spray the dishes with the washing water; a spectrum sensor, which is configured to identify the material of the dishes; a turbidity sensor, which is configured to collect the turbidity of the washing water; an ultrasonic assembly, which is configured to generate ultrasonic waves; and a controller, which is configured to: identify the material of the dishes through the material identification assembly, and determine the dirtiness of the dishes through the turbidity sensor; determine the first operation parameter of the ultrasonic assembly according to the material of the dishes and the dirtiness of the dishes; and control the spraying assembly to spray the dishes with the washing water in the cleaning stage, and control the ultrasonic assembly to operate based on the first operation parameter. The above scheme can effectively improve the cleaning effect of the dishes and reduce the cleaning time.

Description

Technical Field

[0001] This application relates to the field of household appliance technology. More specifically, it relates to a dishwasher and its control method. Background Technology

[0002] Dishwashers are popular as a productivity tool that frees up users' hands. Currently, dishwashers rely on high-pressure spraying to clean dishes, but this method has problems such as high water consumption, high energy consumption, and insufficient cleaning power for stubborn stains. Summary of the Invention

[0003] This application provides a dishwasher and its control method to improve the cleaning effect of tableware.

[0004] In a first aspect, embodiments of this application provide a dishwasher, comprising:

[0005] The inner liner forms a washing chamber for holding the tableware to be washed and the washing water;

[0006] The spray assembly is configured to spray washing water onto the tableware;

[0007] A spectral sensor, disposed in the inner liner, is configured to identify the material of the tableware;

[0008] A turbidity sensor, disposed in the washing chamber, is configured to collect the turbidity of the washing water;

[0009] An ultrasonic component, disposed within the inner liner, is configured to generate ultrasonic waves;

[0010] The controller is configured to:

[0011] The material of the tableware is identified by the spectral sensor, and the degree of dirtiness of the tableware is determined by the turbidity sensor.

[0012] The first operating parameters of the ultrasonic component are determined based on the material of the tableware and the degree of soiling of the tableware; the first operating parameters include operating duration and / or operating frequency.

[0013] During the cleaning phase, the spray assembly is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, causing the washing water sprayed onto the tableware to vibrate and clean the tableware.

[0014] The above solution can determine the operating parameters of the matching ultrasonic components according to the material and degree of dirt of the tableware. During the cleaning process, the tableware is cleaned by combining spraying and ultrasonic waves, which can effectively improve the cleaning effect, reduce cleaning time, and reduce unnecessary energy consumption.

[0015] In some embodiments, the cleaning phase includes a rinsing phase and a main washing phase, and the controller is configured to:

[0016] Based on the material of the tableware and the degree of dirtiness of the tableware, as well as the mapping relationship between the material-degree of dirtiness and the operating parameters, the first operating parameters corresponding to the rinsing stage and the main washing stage are determined respectively.

[0017] In some embodiments, the dishwasher further includes an image acquisition component, and the controller is configured to:

[0018] After the rinsing stage is completed, the cleanliness of the tableware is obtained through the image acquisition component;

[0019] If the cleanliness of the tableware does not match the preset cleanliness level, the running time and / or running frequency of the ultrasonic component corresponding to the main washing stage will be adjusted.

[0020] In some embodiments, the controller is configured to:

[0021] The washing water, at a preset volume by the spray assembly, is used to rinse the tableware.

[0022] The turbidity of the wash water after rinsing is collected by the turbidity sensor.

[0023] The degree of soiling of the tableware is determined based on the turbidity of the washing water.

[0024] In some embodiments, the dishwasher further includes a laser assembly disposed in the inner tub, and the controller is configured to:

[0025] Based on the material of the tableware, a second operating parameter for the laser component is determined; the second operating parameter includes the operating power of the laser component and / or the operating duration of the laser component.

[0026] During the drying stage, the laser component is controlled to operate according to the second operating parameters, so that the laser component emits a laser beam toward the tableware to dry the tableware.

[0027] In some embodiments, the dishwasher further includes: a distance sensor configured to detect the distance between the tableware and the laser assembly; the controller is configured to:

[0028] The second operating parameters of the laser component are determined based on the shortest distance between the tableware and the laser component and the material of the tableware.

[0029] In some embodiments, the dishwasher further includes a humidity sensor disposed in the washing chamber, and the controller is configured to:

[0030] After drying, the humidity of the tableware is determined by the humidity sensor;

[0031] If the humidity indicator of the tableware fails to meet the drying standard, then the third operating parameter of the laser component is determined based on the humidity, the material of the tableware, and the shortest distance.

[0032] The laser component is re-controlled according to the third operating parameter to dry the tableware.

[0033] In some embodiments, the laser assembly includes a laser generator and an optical diffraction unit, the optical diffraction unit being configured to:

[0034] The laser beam generated by the laser generator is diffracted so that the diffracted laser beam covers the washing chamber.

[0035] In some embodiments, the controller is configured to:

[0036] During the drying stage, the opening angle of the dishwasher door is obtained;

[0037] When the opening angle is greater than or equal to a preset angle, the laser component is controlled to stop operating.

[0038] Secondly, embodiments of this application provide a method for controlling a dishwasher, the dishwasher comprising:

[0039] The inner liner forms a washing chamber for holding the tableware to be washed and the washing water;

[0040] The spray assembly is configured to spray washing water onto the tableware;

[0041] A spectral sensor, disposed in the inner liner, is configured to identify the material of the tableware;

[0042] A turbidity sensor, disposed in the washing chamber, is configured to collect the turbidity of the washing water;

[0043] An ultrasonic component, disposed within the inner liner, is configured to generate ultrasonic waves;

[0044] The controller is configured to:

[0045] The material of the tableware is identified by the spectral sensor, and the degree of dirtiness of the tableware is determined by the turbidity sensor.

[0046] The first operating parameters of the ultrasonic component are determined based on the material of the tableware and the degree of soiling of the tableware; the first operating parameters include operating duration and / or operating frequency.

[0047] During the cleaning phase, the spray assembly is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, causing the washing water sprayed onto the tableware to vibrate and clean the tableware.

[0048] Thirdly, embodiments of this application provide a dishwasher, including: a memory and a processor;

[0049] The memory stores computer-executed instructions;

[0050] The processor executes computer execution instructions stored in the memory, causing the processor to perform various possible implementations of the second aspect above.

[0051] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement various possible implementations of the second aspect above.

[0052] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements various possible implementations of the second aspect above.

[0053] The dishwasher and its control method provided in this application include: an inner tub with a washing chamber for accommodating tableware to be washed and washing water; a spray assembly configured to spray washing water onto the tableware; a spectral sensor disposed in the inner tub and configured to identify the material of the tableware; a turbidity sensor disposed in the washing chamber and configured to collect the turbidity of the washing water; an ultrasonic component disposed in the inner tub and configured to generate ultrasonic waves; and a controller configured to: identify the material of the tableware through the material identification assembly and determine the degree of soiling of the tableware through the turbidity sensor; determine first operating parameters of the ultrasonic component based on the material of the tableware and the degree of soiling of the tableware; the first operating parameters include operating duration and / or operating frequency; and during the washing phase, control the spray assembly to spray washing water onto the tableware and control the ultrasonic component to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, causing the washing water sprayed onto the tableware to vibrate and clean the tableware. The above solution can determine the operating parameters of the matching ultrasonic components according to the material and degree of dirt of the tableware. During the cleaning process, the tableware is cleaned by combining spraying and ultrasonic waves, which can effectively improve the cleaning effect, reduce cleaning time, and reduce unnecessary energy consumption. Attached Figure Description

[0054] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0055] Figure 1 A schematic diagram of the structure of a dishwasher provided in this application Figure 1 ;

[0056] Figure 2 A schematic diagram of the structure of a dishwasher provided in this application Figure 2 ;

[0057] Figure 3 A schematic diagram of the structure of a dishwasher provided in this application Figure 3 ;

[0058] Figure 4 A flowchart illustrating a dishwasher control method provided in this application. Figure 1 ;

[0059] Figure 5 A flowchart illustrating a dishwasher control method provided in this application. Figure 2 ;

[0060] Figure 6 A schematic diagram of the structure of a dishwasher provided in this application Figure 4 ;

[0061] Figure 7 A flowchart illustrating a dishwasher control method provided in this application. Figure 3 ;

[0062] Figure 8 A schematic diagram of the control device for the dishwasher provided in this application.

[0063] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0064] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0065] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0066] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0067] The terms "first" and "second" are configured 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 application, unless otherwise stated, "a plurality of" means two or more.

[0068] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] As a kitchen appliance, dishwashers greatly facilitate users' lives by automatically cleaning pots, bowls, chopsticks, plates, dishes, cups, and other items, and are increasingly loved by users.

[0070] Figure 1 This is a schematic diagram of the structure of a dishwasher. Figure 1 As shown, the dishwasher may include a dishwasher inner tub 10 and a door 11. The dishwasher inner tub 10 may have a washing chamber 12 and an opening. The door 11 may be provided at the opening of the dishwasher inner tub 10. Items such as pots, bowls, chopsticks, plates, dishes, and cups can be placed in the washing chamber 12 for washing.

[0071] Currently, the dishwasher washing process can be divided into four stages: pre-rinse, main wash, rinsing, and drying (also known as tumble drying). After the user selects a washing mode, the dishwasher starts and enters the pre-rinse stage. The dishwasher begins to inject washing water into the inner tank 10. After the water injection is complete, the dishwasher begins to rinse the items placed inside with the rinsing parameters corresponding to the washing mode (e.g., water pressure, duration, etc.), washing away some of the dirt. After rinsing is completed, the dishwasher drains the wastewater through the drain outlet and enters the main wash stage.

[0072] At the start of the main wash stage, the dishwasher begins to inject washing water into the inner tank 10. The water temperature to be heated is determined according to the main wash parameters corresponding to the washing mode. The injected washing water is heated by a heater located at the bottom of the inner tank 10. When the washing water is heated to the preset temperature, the heater is turned off, and the dishwasher begins to execute the washing program. The items to be cleaned are cleaned according to the main wash parameters corresponding to the washing mode. After the main wash stage is completed, the dishwasher drains the wastewater through the drain outlet and enters the hot rinsing stage.

[0073] At the start of the hot rinse stage, the dishwasher begins to inject washing water into the inner tank 10. The injected washing water is heated by a heater located at the bottom of the inner tank 10. When the washing water is heated to the preset temperature, the heater is turned off, and the dishwasher begins to execute the hot rinse program. The object to be cleaned is hot rinsed according to the rinsing parameters corresponding to the washing mode. After the hot rinse stage is completed, the dishwasher drains the wastewater through the drain outlet and enters the drying stage.

[0074] After entering the drying stage, the dishwasher can control the door 11 to open automatically and use the residual heat of the equipment after the hot rinsing stage to dry the object.

[0075] Currently, dishwashers rely on high-pressure spraying to clean dishes, but this method has problems such as high water consumption, high energy consumption, and insufficient cleaning power for stubborn stains.

[0076] In view of this, this application provides a dishwasher and its control method. By adding an ultrasonic component to the dishwasher, the ultrasonic component is activated simultaneously when the dishes are cleaned by spraying, so that the washing water sprayed onto the dishes vibrates, thereby effectively improving the cleaning effect and reducing energy consumption.

[0077] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0078] Figure 2 This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application, such as... Figure 2 As shown: The dishwasher includes: inner tank 10, water tank 13, heater 14, water inlet valve 15, and controller 16.

[0079] The inner tank 10 has a washing chamber 12 for accommodating the object to be washed and the washing water, as well as an opening. A door 11 may be provided at the opening of the dishwasher inner tank 10.

[0080] The water storage tank 13 has a contoured structure that matches the shape of the inner tank 10 and is fitted to the outer wall of the inner tank 10, and is used to store spare washing water.

[0081] The heater 14 is disposed adjacent to the inner tank 10 (e.g., at the bottom of the inner tank 10) and is used to start working in response to the operating command of the controller 16 to heat the washing water in the inner tank 10. Alternatively, the heater 14 can also stop working in response to the stop command of the controller 16, thus stopping the heating of the washing water in the inner tank 10.

[0082] The inlet valve 15 is connected to the inner tank 10, the water storage tank 13, and the external water inlet via an inlet pipe. It is used to open the valve in response to an opening command from the controller 16, allowing external water flow to inject washing water into the inner tank 10 and / or the water storage tank 13. Alternatively, the inlet valve 15 can also close the valve in response to a closing command from the controller 16, stopping the injection of washing water into the inner tank 10 and / or the water storage tank 13.

[0083] The controller 16 can be connected to the heater 14 and the water inlet valve 15, etc., to control the heater 14 and the water inlet valve 15 or to acquire data. Optionally, the controller 16 can be, for example, any chip with processing capabilities.

[0084] In some embodiments, the dishwasher also includes a door drive 17.

[0085] The door 11 can be located at the opening of the dishwasher inner tub 10 and is rotatably connected to the inner tub 10. When the door 11 is open, items can be placed or removed from the inner tub 10 through the opening. The door drive 17 is connected to the door and can be used to control the automatic opening and closing of the door 11.

[0086] In some embodiments, the door drive 17 may also be referred to as a door controller. The door drive 17 can respond to commands from the controller 16 to control the door 11 to open or close automatically. For example, if the controller 16 sends a command to the door drive 17 instructing the door 11 to open, the door drive 17 can respond to the command and control the door 11 to open automatically. If the controller 16 sends a command to the door drive 17 instructing the door 11 to close, the door drive 17 can respond to the command and control the door 11 to close automatically.

[0087] In some embodiments, after the hot rinsing stage, the dishwasher enters the drying stage. During the drying stage, the controller 16 sends a command to the door drive 17 to instruct the door 11 to open. The door drive 17 responds to this command by automatically opening the door 11, allowing the large amount of humid water vapor generated in the inner tub 10 during the hot rinsing stage to quickly dry all components within the inner tub 10. After a preset time (e.g., 1 minute), the controller 16 sends a command to the door drive 17 to instruct the door 11 to close. The door drive 17 responds to this command by automatically closing the door 11.

[0088] After the control door 11 is closed, the controller 16 utilizes the residual heat of the dishwasher—the internal components, the inner wall of the drum, and the surface of the object—to dry the cleaned item. Simultaneously, the vacuum insulation of the water tank extends the time the dishwasher remains at a high temperature, accelerating the drying process and reducing energy consumption, resulting in a rapid and energy-efficient drying effect.

[0089] In some embodiments, the dishwasher inner tub 10 is also provided with an upper spray arm 18, a shelf 19 and a lower spray arm 20.

[0090] The shelf 19 is used to store objects to be cleaned, such as pots, bowls, ladles, and basins. The upper spray arm 18 is used to draw washing water stored in the washing chamber and spray it onto the objects stored on the shelf 19 from above to clean them. The lower spray arm 20 is used to draw washing water stored in the washing chamber and spray it onto the objects stored on the shelf 19 from below to clean them. The upper spray arm 18 and the lower spray arm 20 can be referred to as a spray assembly.

[0091] It should be understood that when a dishwasher washes an object, it may use only the upper spray arm 18 to spray water on the object, or only the lower spray arm 20 to spray water on the object, or it may use both the upper spray arm 18 and the lower spray arm 20 simultaneously to spray water on the object. The above water spraying method can be determined based on the set washing program (e.g., washing program or hot rinsing program).

[0092] In some embodiments, such as Figure 2 As shown, the dishwasher also includes a spectral sensor 21, a turbidity sensor 22, and an ultrasonic component 23. The spectral sensor 21, the turbidity sensor 22, and the ultrasonic component 23 are all disposed within the inner liner 10.

[0093] In some embodiments, a spectral sensor 21 is disposed in the inner liner 10 to collect spectral reflectance data of the tableware stored in the inner liner 10 in response to control commands from the controller 16.

[0094] A turbidity sensor 22 is disposed in the washing chamber 12 and is used to collect the turbidity of the washing water stored in the washing chamber in response to the control command of the controller 16.

[0095] An ultrasonic component 23 is disposed in the inner liner 10 and is used to emit ultrasonic waves to the tableware in the inner liner 10 in response to the control command of the controller 16.

[0096] In some embodiments, such as Figure 3 As shown, the ultrasonic component 23 includes an ultrasonic generator 231 and a transducer 232. The ultrasonic generator 231 emits a high-frequency oscillation signal, which is converted into a high-frequency mechanical oscillation signal by the transducer 232 and propagated to the surface of the tableware. By utilizing the cavitation effect of ultrasonic waves in liquid, the water sprayed onto the surface of the tableware vibrates, thereby dispersing, emulsifying, and peeling off the dirt layer on the surface of the tableware to achieve the purpose of cleaning.

[0097] In some embodiments, the transducer 232 in the ultrasonic component 23 is a multi-band transducer array. The multi-band transducer array includes multiple transducers arranged in a spiral gradient distribution in the inner tank 10, so that the high-frequency mechanical oscillation signal converted by the multi-band transducer array can cover the entire inner tank washing cavity 12, thereby improving the ultrasonic cleaning effect on the tableware in the washing cavity 12.

[0098] It should be understood that Figure 2 This description of the dishwasher's structure is merely an example of some components relevant to this application. This application does not limit whether the dishwasher includes other components.

[0099] The aforementioned controller 16 can be configured to execute a cleaning process in response to user commands. Figure 4 This is a flowchart illustrating a dishwasher control method provided in this application. Figure 3 As shown, the following steps may be included:

[0100] S401. Identify the material of the tableware using the spectral sensor, and determine the degree of dirtiness of the tableware using the turbidity sensor.

[0101] In some embodiments, when the controller receives a start signal, it can send a spectral acquisition command to the spectral acquisition sensor so that the spectral acquisition device can acquire the spectral reflectance data of the tableware.

[0102] After receiving the start signal, the controller can inject washing water into the washing chamber through the water tank and control the spray assembly to rinse the tableware with a preset amount of washing water (e.g., 100-300ml). After rinsing, the controller sends a collection command to the turbidity collection device so that the turbidity collection device can collect the turbidity of the washing water.

[0103] In some embodiments, after acquiring the spectral reflectance data, a preset mapping relationship between spectral reflectance data and materials can be queried (for example, this mapping relationship is stored in the controller in the form of a mapping table) to determine the materials included in the tableware. For example, when the spectral reflectance data is between A and B, the corresponding tableware material may include glass or iron; when the spectral reflectance data is between B and C, the corresponding tableware material may include glass, iron, plastic, etc.

[0104] In some embodiments, after obtaining the turbidity of the washing water, the degree of soiling of the tableware can be determined based on a preset mapping relationship between the degree of soiling and turbidity. For example, the degree of soiling of the tableware can be divided into three levels: low, medium, and high.

[0105] S402. Determine the first operating parameters of the ultrasonic component based on the material of the tableware and the degree of dirtiness of the tableware; the first operating parameters include the operating duration and / or operating frequency.

[0106] In some embodiments, after obtaining the material and degree of soiling of the tableware, the material and degree of soiling can be input into a pre-trained prediction model to obtain the first operating parameters output by the prediction model. The training dataset may include the material and degree of soiling of multiple sample tableware and the first sample operating parameters (label data). The training method for the prediction model can refer to existing training methods.

[0107] In some embodiments, after obtaining the material and degree of soiling of the tableware, a database can be queried to determine the first operating parameters. The database stores the operating parameters of the ultrasound waves corresponding to different tableware types and degrees of soiling.

[0108] S403. During the cleaning stage, the spray assembly is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, thereby causing the washing water sprayed onto the tableware to vibrate and clean the tableware.

[0109] In some embodiments, after entering the cleaning stage, the controller can control the operation of the ultrasonic component based on the first operating parameters while controlling the spray assembly to spray washing water onto the tableware.

[0110] It should be understood that the cleaning phase includes a rinsing phase (pre-rinse) and a main washing phase, and the first operating parameters may include the operating parameters corresponding to each phase.

[0111] It should be understood that the spray parameters (e.g., water temperature, water pressure, duration, etc.) used by the spray assembly to spray washing water onto the tableware can be determined using methods found in the prior art. For example, they can be determined based on the cleaning mode selected by the user.

[0112] In some embodiments, after the washing stage is completed, the dishwasher enters the rinsing stage, which is implemented in a manner similar to the rinsing process in the prior art, and will not be described in detail here.

[0113] The dishwasher control method provided in this application identifies the material of the tableware using a spectral sensor and determines the degree of soiling using a turbidity sensor. Based on the material and degree of soiling of the tableware, first operating parameters of the ultrasonic component are determined. These first operating parameters include operating duration and / or operating frequency. During the washing phase, the spray component is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, causing the ultrasonic component to emit ultrasonic waves towards the tableware, thereby vibrating the sprayed washing water and cleaning the tableware. This method determines the matching operating parameters of the ultrasonic component based on the material and degree of soiling of the tableware. Using a combination of spraying and ultrasonic waves during the washing process effectively improves the cleaning effect, reduces washing time, and minimizes unnecessary energy consumption. Furthermore, determining the ultrasonic operating parameters based on the material of the tableware improves adaptability to different materials and reduces damage to the tableware (e.g., reducing scratches on plastic tableware surfaces).

[0114] In some embodiments, to further improve the cleaning effect, the dishwasher can also adjust the first operating parameters of the ultrasonic component in real time during the cleaning process.

[0115] Figure 5 A flowchart illustrating the dishwasher control method provided in this application embodiment. Figure 3 ,like Figure 5 As shown, it includes:

[0116] S501. After the rinsing stage is completed, the cleanliness of the tableware is obtained through an image acquisition device.

[0117] In some embodiments, the dishwasher further includes an image acquisition device disposed in the inner tub for acquiring image data of tableware in the washing chamber.

[0118] In some embodiments, the higher the cleanliness, the better the cleaning effect of the tableware. The controller can control the image acquisition device to acquire image data of the tableware at the end of the rinsing stage and determine the cleanliness of the tableware based on the image data.

[0119] For example, the controller can perform color analysis (such as the yellow of oil stains, the milky white of protein residues), texture analysis (such as calculating the Local Binary Pattern (LBP) or Gray-Level Co-occurrence Matrix (GLCM) to compare the texture differences between clean and stained areas) on the image data, or use YOLO or Faster R-CNN algorithms to analyze the image data to determine the cleanliness of the tableware.

[0120] S502. If the cleanliness does not match the preset cleanliness, the running time and / or running frequency of the ultrasonic component corresponding to the main washing stage shall be adjusted.

[0121] In some embodiments, when the cleanliness level corresponding to the rinsing stage is obtained, this cleanliness level can be compared with a preset cleanliness level. If they do not match (e.g., are inconsistent, or the difference is greater than the preset value), that is, the cleanliness level is not up to standard, the running time and / or operating frequency of the ultrasonic component corresponding to the main washing stage can be adjusted. For example, the operating frequency of the ultrasonic component in the main washing stage can be increased and / or the running time of the ultrasonic component can be extended.

[0122] For example, the controller can input the current cleanliness level, the preset cleanliness level, and the first operating parameters corresponding to the main wash stage into a pre-trained model to obtain the adjusted first operating parameters corresponding to the main wash stage output by the model.

[0123] In some embodiments, after the main wash phase is completed, the controller can also obtain the cleanliness level corresponding to that phase through an image acquisition device. If the cleanliness level corresponding to that phase is still not up to standard, the main wash can be repeated. When repeating the main wash, the first operating parameters of the ultrasonic component and the spray parameters during the main wash can be determined based on the current cleanliness level.

[0124] In some embodiments, after rinsing, the controller may also perform a drying process to dry the tableware.

[0125] Figure 6 A schematic diagram of another dishwasher provided in this application embodiment is shown below. Figure 6 As shown, the dishwasher also includes a laser assembly 24.

[0126] The laser component 24 is disposed in the inner liner 10 and is used to emit a laser beam to the tableware in the inner liner 10 in response to the control command of the controller 16.

[0127] In some embodiments, the laser beam emitted by the laser component 24 is an infrared laser.

[0128] In some embodiments, the laser assembly 24 includes a laser generator 241 and an optical diffraction unit 242, which are connected via an optical path. The laser generator 241 emits a laser beam, and the optical diffraction unit 242 diffracts the laser beam generated by the laser generator 241 so that the diffracted laser beam covers the washing chamber.

[0129] It should be understood that Figure 6This is merely an illustrative representation of the laser component's placement within the inner liner. Those skilled in the art can adjust the laser component's placement within the inner liner according to actual needs. This application does not limit the placement of the laser component within the inner liner.

[0130] Figure 7 A flowchart illustrating another dishwasher control method provided in this application embodiment is shown below. Figure 7 As shown, it includes:

[0131] S701. Determine the second operating parameters of the laser component based on the material of the tableware; the second operating parameters include the operating power of the laser component and / or the operating duration of the laser component.

[0132] In some embodiments, after obtaining the material of the tableware, the material can be input into a pre-trained prediction model to obtain the second operating parameters output by the prediction model. The training dataset may include the materials of multiple sample tableware and the second sample operating parameters (label data). The training method for the prediction model can refer to existing training methods.

[0133] In some embodiments, the material of the tableware can be obtained by querying a database to determine the second operating parameter. The database stores operating parameters of the laser component corresponding to different tableware materials.

[0134] In some embodiments, the dishwasher further includes a distance sensor disposed in the inner tub for detecting the distance between the tableware and the laser assembly.

[0135] In some embodiments, there may be multiple tableware items in the washing chamber, and the distance detected by the distance sensor may also be multiple. When the controller obtains multiple distances detected by the distance sensor, it may take the shortest distance as the distance between the tableware items and the laser component.

[0136] In some embodiments, the controller can input the distance between the tableware and the laser component and the material of the tableware into a pre-trained prediction model to obtain a second operating parameter output by the prediction model. By using parameters in two dimensions—material and distance—the accuracy of the determined second operating parameter of the laser component can be improved.

[0137] S702. During the drying stage, the laser component is controlled to operate according to the second operating parameters so that the laser component emits a laser beam toward the tableware to dry the tableware.

[0138] In some embodiments, the controller can control the operation of the laser component according to the second operating parameters, so that the laser beam emitted by the laser component irradiates the surface of the tableware, so that water molecules absorb the energy of the laser beam and convert it into heat energy, thereby achieving targeted dehydration of the tableware.

[0139] In some embodiments, the dishwasher further includes a humidity sensor disposed in the inner tub for detecting the humidity of the tableware.

[0140] In some embodiments, after drying is completed, the controller can control the humidity sensor to detect the humidity of the tableware. If the detected humidity is greater than a preset value, it indicates that the drying process is not up to standard. The controller can then determine the third operating parameters of the laser component based on the humidity, the material of the tableware, and the shortest distance. Based on the third operating parameters, the controller can re-control the operation of the laser component to dry the tableware.

[0141] For example, the controller can query a preset data table based on the humidity, the material of the tableware, and the shortest distance, or obtain the third operating parameter using a pre-trained model.

[0142] In some embodiments, since laser beam leakage can cause harm to users, the controller can also obtain the opening angle of the dishwasher door through the door drive during the drying process. When the opening angle is greater than or equal to a preset angle* (e.g., 5°), the controller controls the laser assembly to stop operating and cut off the laser output to avoid the leaked laser beam causing harm to the user.

[0143] In summary, drying using laser components allows for optimization of the laser wavelength to target the absorption peak of water molecules, improving energy utilization and thus increasing drying efficiency. It also features quiet operation: no fan noise and low operating noise. Furthermore, the specific wavelength of the laser can inhibit the growth of microorganisms such as E. coli.

[0144] In some embodiments, after drying, the controller can upload the material and degree of soiling of the tableware, as well as the first operating parameters of the ultrasonic components during the cleaning process, to the cloud, so that the cloud can update the corresponding model based on the uploaded data. After the cloud has updated the corresponding model, it can send the updated model to the controller, so that the controller can use the updated model in subsequent cleaning processes.

[0145] The controller can also upload the second operating parameters of the laser component during the drying stage, as well as the material of the tableware, to the cloud, so that the cloud can update the corresponding model based on the uploaded data. After the corresponding model is updated in the cloud, it can be sent to the controller so that the controller can use the updated model in subsequent drying processes.

[0146] In some embodiments, after drying is complete, the controller may also send a cleaning report to the user's client. The cleaning report may include cleaning time, water consumption, electricity consumption, drying time, etc., so that the user can understand the entire cleaning process.

[0147] Based on the above embodiments, this application also provides a dishwasher control device.

[0148] Figure 8 This is a schematic diagram of the structure of the dishwasher control device provided in the embodiments of this application, as shown below. Figure 8 As shown, it includes:

[0149] The processing module 801 is used to identify the material of the tableware through the spectral sensor and to determine the degree of dirtiness of the tableware through the turbidity sensor.

[0150] The determining module 802 is used to determine the first operating parameters of the ultrasonic component based on the material of the tableware and the degree of dirtiness of the tableware; the first operating parameters include the operating duration and / or operating frequency.

[0151] The control module 803 is used to control the spray assembly to spray washing water onto the tableware during the washing stage, and to control the operation of the ultrasonic component based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, thereby causing the washing water sprayed onto the tableware to vibrate and clean the tableware.

[0152] In some embodiments, the determining module 802 is further configured to determine the first operating parameters corresponding to the rinsing stage and the main washing stage respectively, based on the material of the tableware and the degree of dirtiness of the tableware, as well as the mapping relationship between the material-degree of dirtiness and the operating parameters.

[0153] In some embodiments, the determining module 802 is further configured to acquire the cleanliness of the tableware through the image acquisition component after the rinsing stage; if the cleanliness of the tableware does not match the preset cleanliness, the running time and / or running frequency of the ultrasonic component corresponding to the main washing stage are adjusted.

[0154] In some embodiments, the processing module 801 is further configured to control the washing water with a preset amount of water from the spray assembly to rinse the tableware; collect the turbidity of the washing water after rinsing using the turbidity sensor; and determine the degree of dirtiness of the tableware based on the turbidity of the washing water.

[0155] In some embodiments, the determining module 802 is further configured to determine a second operating parameter of the laser component based on the material of the tableware; the second operating parameter includes the operating power of the laser component and / or the operating duration of the laser component; during the drying stage, the laser component is controlled to operate according to the second operating parameter so that the laser component emits a laser beam toward the tableware to dry the tableware.

[0156] In some embodiments, the determining module 802 is further configured to determine a second operating parameter of the laser component based on the shortest distance between the tableware and the laser component and the material of the tableware.

[0157] In some embodiments, the determining module 802 is further configured to determine the humidity of the tableware by means of the humidity sensor after drying; if the humidity of the tableware indicates that the drying is not up to standard, then a third operating parameter of the laser component is determined based on the humidity, the material of the tableware and the shortest distance.

[0158] In some embodiments, the control module 803 is further configured to acquire the opening angle of the dishwasher door during the drying stage; and control the laser assembly to stop operating when the opening angle is greater than or equal to a preset angle.

[0159] The dishwasher control device provided in this application is used to execute the technical solution of the dishwasher control method provided in any of the foregoing embodiments. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0160] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. These modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented in software via processing element calls, while others are implemented in hardware. Each module can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as program code in the device's memory, and its functions can be called and executed by a processing element. Furthermore, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each of the above modules can be completed through integrated logic circuits in the processor element or through software instructions.

[0161] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0162] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0163] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0164] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0165] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0166] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0167] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0168] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0169] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0170] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A dishwasher, characterized in that, include: The inner liner forms a washing chamber for holding the tableware to be washed and the washing water; The spray assembly is configured to spray washing water onto the tableware; A spectral sensor, disposed in the inner liner, is configured to identify the material of the tableware; A turbidity sensor, disposed in the washing chamber, is configured to collect the turbidity of the washing water; An ultrasonic component, disposed within the inner liner, is configured to generate ultrasonic waves; The controller is configured to: The material of the tableware is identified by the spectral sensor, and the degree of dirtiness of the tableware is determined by the turbidity sensor. The first operating parameters of the ultrasonic component are determined based on the material of the tableware and the degree of soiling of the tableware; the first operating parameters include operating duration and / or operating frequency. During the cleaning phase, the spray assembly is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, causing the washing water sprayed onto the tableware to vibrate and clean the tableware. The dishwasher further includes a laser assembly disposed in the inner tub, and the controller is configured to determine a second operating parameter of the laser assembly based on the material of the tableware; the second operating parameter includes the operating power of the laser assembly and / or the operating duration of the laser assembly. During the drying stage, the laser component is controlled to operate according to the second operating parameters, so that the laser component emits a laser beam toward the tableware to dry the tableware; The dishwasher further includes: a distance sensor configured to detect the distance between the tableware and the laser assembly; and a controller configured to determine a second operating parameter of the laser assembly based on the shortest distance between the tableware and the laser assembly and the material of the tableware.

2. The dishwasher according to claim 1, characterized in that, The cleaning phase includes a rinsing phase and a main washing phase, and the controller is configured to: Based on the material of the tableware and the degree of dirtiness of the tableware, as well as the mapping relationship between the material-degree of dirtiness and the operating parameters, the first operating parameters corresponding to the rinsing stage and the main washing stage are determined respectively.

3. The dishwasher according to claim 2, characterized in that, The dishwasher further includes an image acquisition component, and the controller is configured to: After the rinsing stage is completed, the cleanliness of the tableware is obtained through the image acquisition component; If the cleanliness of the tableware does not match the preset cleanliness level, the running time and / or running frequency of the ultrasonic component corresponding to the main washing stage will be adjusted.

4. The dishwasher according to any one of claims 1-3, characterized in that, The controller is configured to: The spray assembly is controlled to rinse the tableware with a preset amount of washing water; The turbidity of the wash water after rinsing is collected by the turbidity sensor. The degree of soiling of the tableware is determined based on the turbidity of the washing water.

5. The dishwasher according to claim 1, characterized in that, The dishwasher further includes a humidity sensor disposed in the washing chamber, and the controller is configured to: After drying, the humidity of the tableware is determined by the humidity sensor; If the humidity indicator of the tableware fails to meet the drying standard, then the third operating parameter of the laser component is determined based on the humidity, the material of the tableware, and the shortest distance. The laser component is re-controlled according to the third operating parameter to dry the tableware.

6. The dishwasher according to claim 5, characterized in that, The laser assembly includes a laser generator and an optical diffraction unit, wherein the optical diffraction unit is configured as follows: The laser beam generated by the laser generator is diffracted so that the diffracted laser beam covers the washing chamber.

7. The dishwasher according to any one of claims 1-6, characterized in that, The controller is configured to: During the drying stage, the opening angle of the dishwasher door is obtained; When the opening angle is greater than or equal to a preset angle, the laser component is controlled to stop operating.

8. A method for controlling a dishwasher, characterized in that, The dishwasher includes: The inner liner forms a washing chamber for holding the tableware to be washed and the washing water; The spray assembly is configured to spray washing water onto the tableware; A spectral sensor, disposed in the inner liner, is configured to identify the material of the tableware; A turbidity sensor, disposed in the washing chamber, is configured to collect the turbidity of the washing water; An ultrasonic component, disposed within the inner liner, is configured to generate ultrasonic waves; A laser assembly disposed within the inner liner; The controller is configured to: The material of the tableware is identified by the spectral sensor, and the degree of dirtiness of the tableware is determined by the turbidity sensor. The first operating parameters of the ultrasonic component are determined based on the material of the tableware and the degree of soiling of the tableware; the first operating parameters include operating duration and / or operating frequency. During the cleaning phase, the spray assembly is controlled to spray washing water onto the tableware, and the ultrasonic component is controlled to operate based on the first operating parameters, so that the ultrasonic component emits ultrasonic waves toward the tableware, causing the washing water sprayed onto the tableware to vibrate and clean the tableware. The controller is further configured to: determine a second operating parameter of the laser component based on the material of the tableware; the second operating parameter includes the operating power of the laser component and / or the operating duration of the laser component; During the drying stage, the laser component is controlled to operate according to the second operating parameters, so that the laser component emits a laser beam toward the tableware to dry the tableware; It also includes: a distance sensor configured to detect the distance between the tableware and the laser component; the controller is configured to: determine a second operating parameter of the laser component based on the shortest distance between the tableware and the laser component and the material of the tableware.

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