Kitchen appliance, control method thereof, and computer-readable storage medium

Abstract

The application discloses a control method of a kitchen appliance, which comprises the following steps: when the kitchen appliance is in a washing mode, if a door of the kitchen appliance is opened, a drainage module of the kitchen appliance is controlled to drain water in a washing cavity of the kitchen appliance; and when the door of the kitchen appliance is opened and then closed again, a water inlet module of the kitchen appliance is controlled to inject water into the washing cavity. The application also discloses a kitchen appliance and a computer readable storage medium. The application aims to avoid user scalding when opening the door and ensure that the kitchen appliance can automatically continue the washing process after the door is closed again, so as to ensure the cleaning effect of kitchen utensils such as tableware.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to control methods for kitchen appliances, kitchen appliances, and computer-readable storage media. Background Technology

[0002] With the development of economy and technology, kitchen appliances are being used more and more widely in people's daily lives. Among them, some kitchen appliances have cleaning functions, such as dishwashers, which generally heat water to a high temperature during the cleaning process and use hot water to wash dishes and other items.

[0003] When the washing process detects that the user has opened the door, the kitchen appliance will drain the washing water to prevent the user from being scalded. However, this will cause the door of the kitchen appliance to close again, making it impossible to continue washing and affecting the cleaning effect of tableware and other kitchen utensils. Summary of the Invention

[0004] The main objective of this invention is to provide a control method for kitchen appliances, kitchen appliances, and a computer-readable storage medium, which aims to prevent users from being scalded when opening the door while ensuring that the kitchen appliances can automatically continue the washing process after the door is closed again, thus ensuring the cleaning effect of tableware and other kitchen utensils.

[0005] To achieve the above objectives, the present invention provides a method for controlling a kitchen appliance, the method comprising the following steps:

[0006] When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the drain module of the kitchen appliance is controlled to drain the water in the washing chamber of the kitchen appliance.

[0007] When the door of the kitchen appliance is opened and then closed again, the water inlet module of the kitchen appliance is controlled to inject water into the washing chamber.

[0008] Optionally, before the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes:

[0009] When the door of the kitchen appliance is opened and then closed again, the first water level in the washing chamber is detected;

[0010] When the first water level is lower than the preset water level, the step of injecting water into the washing chamber by the water inlet module that controls the kitchen appliance is executed;

[0011] When the first water level is greater than or equal to the preset water level, the washing module of the kitchen appliance is controlled to start and perform the washing operation.

[0012] Optionally, after the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes:

[0013] During the process of the water inlet module injecting water into the washing chamber, the second water level in the washing chamber is detected;

[0014] When the second water level is greater than or equal to the preset water level, or when the second water level is less than the preset water level and the water injection volume of the water inlet module is greater than or equal to the set water volume, the water inlet module is controlled to stop injecting water into the washing chamber, and the washing module is controlled to start performing the washing operation.

[0015] Optionally, the step of detecting the second water level in the washing chamber includes:

[0016] The system controls the washing pump in the washing chamber to start and detects the operating current of the washing pump; when the washing pump is started, it draws water from the washing chamber and performs a water spraying operation.

[0017] The second water level is determined based on the operating current.

[0018] Optionally, the operating current includes multiple current values ​​detected at different times, and the step of determining the second water level based on the operating current includes:

[0019] Determine the average current value, maximum current value, and minimum current value corresponding to the multiple current values;

[0020] The second water level is determined based on the average current value, the maximum current value, and the minimum current value.

[0021] Optionally, the step of determining the second water level based on the average current value, the maximum current value, and the minimum current value includes:

[0022] When the average current value is less than or equal to the target current threshold, and the deviation between the maximum current value and the minimum current value is greater than or equal to the set deviation threshold, the second water level is determined to be a water level value that is less than or equal to the preset water level.

[0023] When the average current value is greater than the target current threshold, or when the deviation between the maximum current value and the minimum current value is less than the set deviation threshold, the second water level is determined to be a water level value greater than the preset water level.

[0024] The set deviation threshold and the target current threshold are both determined based on the preset water level.

[0025] Optionally, the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance includes:

[0026] Control the drainage module to turn on;

[0027] When the opening duration of the drainage module is greater than or equal to a first preset duration, the drainage module is controlled to alternately open and close.

[0028] Optionally, before the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes:

[0029] When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the water temperature inside the washing chamber is detected.

[0030] When the water temperature is greater than or equal to a set temperature threshold, the step of draining the water in the washing chamber of the kitchen appliance by controlling the drain module of the kitchen appliance is executed.

[0031] Optionally, before the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes:

[0032] When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the heating device corresponding to the washing chamber will be turned off.

[0033] After the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes:

[0034] The duration of the kitchen appliance door being closed is obtained; if the duration is less than a second preset duration, the heating device is controlled to remain in the off state.

[0035] If the duration is greater than or equal to the second preset duration, the heating device is turned on.

[0036] In addition, to achieve the above objectives, this application also proposes a kitchen appliance, the kitchen appliance comprising: a memory, a processor, and a control program of the kitchen appliance stored in the memory and executable on the processor, wherein when the control program of the kitchen appliance is executed by the processor, it implements the steps of the control method of the kitchen appliance as described in any of the preceding claims.

[0037] In addition, to achieve the above objectives, this application also proposes a computer-readable storage medium storing a control program for a kitchen appliance, which, when executed by a processor, implements the steps of the control method for the kitchen appliance as described in any of the preceding claims.

[0038] This invention proposes a control method for kitchen appliances. When the kitchen appliance is in washing mode, water in the washing chamber is drained through a drain module when the appliance door is opened to prevent burns from high-temperature steam. Furthermore, when the appliance door is opened and then closed again, the water inlet module is controlled to inject water into the washing chamber to replenish the necessary water for washing. This ensures that the washing chamber has sufficient water to continue washing after the appliance door is closed again, thus preventing burns from the user while ensuring the appliance automatically continues the washing process after the door is closed, guaranteeing the cleanliness of tableware and other kitchen utensils. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the hardware structure involved in the operation of an embodiment of the kitchen appliance of the present invention;

[0040] Figure 2 This is a flowchart illustrating an embodiment of the control method for kitchen appliances of the present invention;

[0041] Figure 3 This is a schematic flowchart of another embodiment of the control method for kitchen appliances of the present invention;

[0042] Figure 4 This is a flowchart illustrating another embodiment of the control method for kitchen appliances of the present invention.

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The main solution of this invention is: when the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the drain module of the kitchen appliance is controlled to drain the water in the washing chamber of the kitchen appliance; when the door of the kitchen appliance is opened and then closed again, the water inlet module of the kitchen appliance is controlled to inject water into the washing chamber.

[0046] In existing technology, when a kitchen appliance detects a user opening the door during the washing process, it will drain the washing water to prevent the user from being scalded. However, this will cause the door of the kitchen appliance to close again, making it impossible to continue washing and affecting the cleaning effect of tableware and other kitchen utensils.

[0047] The present invention provides the above-mentioned solution, which aims to prevent users from being scalded when opening the door while ensuring that the kitchen appliances can automatically continue to complete the washing process after the door is closed again, thus ensuring the cleaning effect of tableware and other kitchen utensils.

[0048] This invention provides a kitchen appliance, specifically a kitchen appliance with a washing function for tableware and other kitchen utensils. In this embodiment, the kitchen appliance is a dishwasher. In other embodiments, the kitchen appliance may also be a cup washer, a cabinet with a tableware washing function, or an integrated stove with a tableware washing function, etc.

[0049] In this embodiment, the kitchen appliance includes a housing and a cover. The housing contains a washing chamber for accommodating tableware and providing space for washing it. The housing has an opening communicating with the washing chamber, and the cover is openable and closable at the opening to open or close the washing chamber. It is understood that the cover is the structure that closes the opening of the washing chamber; for example, the door of a cabinet dishwasher forms the cover that closes the washing chamber opening, or the top cover of a drawer-type dishwasher forms the cover that closes the washing chamber opening. Specifically, when the cover is open (i.e., the kitchen appliance door is open), a gap is formed between the edge of the cover and the edge of the opening, allowing the interior of the washing chamber to communicate with the external environment; when the cover is closed (i.e., the kitchen appliance door is closed), the cover closes the edge of the opening, blocking the communication between the interior of the washing chamber and the external environment.

[0050] The cover may have a drive mechanism connected to it, which can control the opening or closing of the cover according to a control signal. In other embodiments, the cover may not be connected to a drive mechanism, and the cover may be opened or closed manually by the user.

[0051] Furthermore, a heating device may be installed inside the washing chamber. The heating device is specifically used to heat the water or gas inside the washing chamber to meet the washing or drying needs of the objects inside the washing chamber.

[0052] Furthermore, the washing chamber may also include a washing pump and a driver connected to the washing pump. The washing pump can be used to draw water from the washing chamber and perform a water spraying operation to improve the washing effect on the objects in the washing chamber. The driver can be used to drive the washing pump to turn on or off. In this embodiment, the washing pump is specifically a variable frequency washing pump. In other embodiments, the washing pump may also be a fixed frequency washing pump.

[0053] Furthermore, the washing chamber may also include a temperature sensor, which can be used to detect the water temperature inside the washing chamber.

[0054] Furthermore, the kitchen appliance may also include a drainage module, which may include a drain valve located at the drain outlet of the washing chamber. When the drain valve is opened, water in the washing chamber can be discharged to the outside of the washing chamber through the drain outlet. Furthermore, the drainage module may also include a drain pump, which may be located in a drainage channel outside the washing chamber that communicates with the drain outlet. When the drain pump is activated, water in the washing chamber can be discharged to the outside of the washing chamber through the drain outlet.

[0055] Furthermore, the kitchen appliance may also include a water inlet module, which may include a water inlet valve located at the water inlet of the washing chamber. When the water inlet valve is open, water from outside the washing chamber can be injected into the washing chamber through the water inlet. Furthermore, the water inlet module may also include a water inlet pump, which may be located inside the washing chamber or in a water inlet channel outside the washing chamber communicating with the water inlet. When the water inlet pump is turned on, water from outside the washing chamber can be injected into the interior of the washing chamber through the water inlet.

[0056] Furthermore, kitchen appliances may also include control devices, see reference. Figure 1 The aforementioned drive mechanism 1 of the cover, heating device 2, driver 3 of the washing pump, temperature sensor 4, drainage module 5, and water inlet module 6 can all be connected to the control device here.

[0057] In this embodiment of the invention, reference is made to Figure 1 The control device for the kitchen appliance includes: a processor 1001 (e.g., CPU), a memory 1002, a timer 1003, etc. The memory 1002 can be a high-speed RAM or a stable memory (non-volatile memory), such as a disk storage device. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0058] In this embodiment, the control device includes a door opening protection controller and a water level detector connected to the door opening protection controller. The aforementioned cover drive mechanism 1, heating device 2, temperature sensor 4, drainage module 5, and water inlet module 6 can all be connected to the door opening protection controller, so that the door opening protection controller can perform user safety protection operations when the door is opened during the washing process and water replenishment control operations after the door is closed again, based on the connected components. The water level detector can be connected to the aforementioned washing pump driver 3, so that the water level detector can determine the current water level in the washing chamber by detecting the operating current of the driver.

[0059] The door opening protection controller and the water level detector can be on the same hardware board, on the same microcontroller, or on two separate microcontrollers.

[0060] Those skilled in the art will understand that Figure 1 The device structure shown does not constitute a limitation on the device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0061] like Figure 1 As shown, the memory 1002, which is a computer-readable storage medium, may include a control program for kitchen appliances. Figure 1In the device shown, the processor 1001 can be used to call the control program of the kitchen appliance stored in the memory 1002 and execute the relevant steps of the control method of the kitchen appliance in the following embodiments.

[0062] This invention also provides a method for controlling kitchen appliances, applied to control the aforementioned kitchen appliances.

[0063] Reference Figure 2 This application proposes an embodiment of a control method for kitchen appliances. In this embodiment, the control method for the kitchen appliances includes:

[0064] Step S10: When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, control the drain module of the kitchen appliance to drain the water in the washing chamber of the kitchen appliance.

[0065] When a kitchen appliance is in washing mode, it specifically refers to the operating mode in which the kitchen appliance uses water at a temperature greater than or equal to the preset temperature to wash the objects inside the washing chamber.

[0066] The "opening the kitchen appliance door" mentioned here specifically refers to opening the cover of the washing chamber in the aforementioned kitchen appliance. The cover can open upon receiving an opening command from the user, or it can be opened manually by the user.

[0067] Specifically, the kitchen appliance door is considered open when a user inputs an open command. At this time, the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber can be performed before or simultaneously with the door opening action. Specifically, in this embodiment, to improve user safety when opening the door, after an open command is received, the cover can be kept closed while the drain module drains the water from the washing chamber. During drainage, the water level in the washing chamber can be detected. If the water level is less than or equal to the safe water level, the cover can be opened; if the water level is greater than the safe water level, the cover can be kept closed while the drain module continues to drain. Here, the safe water level is the highest permissible water level at which the steam generated by the water in the washing chamber will not scald the user. Further, in this embodiment, to ensure the user is not scalded by steam, the cover is only opened after all the water in the washing chamber has been drained during the process of keeping the cover closed and controlling the drain module to drain the water from the washing chamber.

[0068] In addition, sensors can be installed on the edge of the opening on the housing that fits the cover. Different characteristic signals are generated on the sensors when the cover is opened and closed. Therefore, by acquiring the sensor's detection signal and comparing it with a pre-set first characteristic signal for door opening, a match indicates the kitchen appliance door is open; a mismatch indicates the door is not open. Specifically, if the sensor's detection signal contains the first characteristic signal corresponding to the kitchen appliance's door opening action, it indicates the cover is opening. At this time, the drain module of the kitchen appliance can be controlled to drain the water from the washing chamber, reducing the amount of steam generated during door opening. Lowering the water level also keeps the generated high-temperature steam further away from the opening, effectively preventing users from being scalded by steam during door opening.

[0069] It should be noted that the water inlet module is in the closed state during the drainage process of the washing chamber, and it is forbidden to inject water into the washing chamber.

[0070] Step S20: When the door of the kitchen appliance is opened and then closed again, control the water inlet module of the kitchen appliance to inject water into the washing chamber.

[0071] The kitchen appliances being turned off here specifically refers to closing the cover of the washing chamber in the aforementioned kitchen appliances.

[0072] Specifically, after the door of the kitchen appliance is opened, it can be assumed that the door has been closed again upon receiving a user-inputted closing command. Furthermore, a sensor can be installed on the edge of an opening on the housing that fits the cover. Different characteristic signals are generated on the sensor when the cover is opened and closed. Therefore, by acquiring the sensor's detection signal and comparing it with a pre-set second characteristic signal for closing the door, a match indicates the door has been closed again; a mismatch indicates the door has not been closed. Water is then injected into the washing chamber via the water inlet module after or simultaneously with the door being closed again.

[0073] The control parameters during the water filling process of the water inlet module (such as water filling rate, water volume, and / or water filling time) can be preset fixed parameters or parameters determined based on the actual operating conditions of the kitchen appliances. For example, kitchen appliances can be set with different types of washing modes, each corresponding to different washing temperatures, water consumption, and / or washing times. Based on this, when the door of the kitchen appliance is closed again after being opened, the appliance can be controlled to resume operation in the washing mode before the door was opened.

[0074] The washing mode of the kitchen appliance before its door is opened can be determined, and the control parameters of the water inlet module for the water injection process can be determined based on this washing mode.

[0075] This invention proposes a control method for kitchen appliances. When the kitchen appliance is in washing mode, the water in the washing chamber is drained through the drain module when the door is opened to prevent the user from being burned by the high-temperature steam generated by the hot water. Furthermore, when the door of the kitchen appliance is opened and then closed again, the water inlet module of the kitchen appliance is controlled to inject water into the washing chamber to replenish the water required for washing. This ensures that there is sufficient water in the washing chamber to continue washing after the door is closed again, thereby preventing the user from being scalded when opening the door and ensuring that the kitchen appliance can automatically continue to complete the washing process after the door is closed again, thus ensuring the cleaning effect of tableware and other kitchen utensils.

[0076] Furthermore, based on the above embodiments, another embodiment of the control method for kitchen appliances of this application is proposed. In this embodiment, reference is made to... Figure 3 If step S20a is defined as controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, then before step S20a, the following steps are also included:

[0077] Step S21: When the door of the kitchen appliance is opened and then closed again, detect the first water level in the washing chamber.

[0078] The first water level can be detected by a water level sensor inside the washing chamber; it can also be determined by the operating parameters of other water level-related modules inside the washing chamber.

[0079] Step S22: Determine whether the first water level is lower than the preset water level;

[0080] When the first water level is lower than the preset water level, step S20a is executed; when the first water level is greater than or equal to the preset water level, step S23 is executed.

[0081] Step S23: Control the washing module of the kitchen appliance to start and perform the washing operation.

[0082] The preset water level here refers to the minimum water level required for the current washing operation. Specifically, different models of kitchen appliances correspond to different preset water levels; different types of washing modes correspond to different preset water levels. In this embodiment, the preset water level ranges from 1.5L to 2.5L. In other embodiments, the preset water level can be set to other values ​​according to actual needs, such as 3L, 4L, etc.

[0083] The washing module specifically includes a washing pump (which sprays water to rinse objects inside the washing chamber) and / or a heating device (which heats the water inside the washing chamber), etc.

[0084] When the first water level is lower than the preset water level, it indicates that the water level in the washing chamber is too low, preventing normal washing in the current washing mode. In this case, the water inlet module is controlled to inject water into the washing chamber to reach the preset water level. During this process, the washing module stops performing washing operations (e.g., turning off the heating device and / or turning off the washing pump) to avoid washing abnormalities (e.g., dry burning) or affecting the washing effect. When the first water level is greater than or equal to the preset water level, it indicates that the water level in the washing chamber is high enough to meet the normal washing requirements of the current washing mode. In this case, the washing module can be controlled to start performing washing operations (e.g., turning on the heating device and / or turning off the washing pump), and the water inlet module can be controlled to close to prevent excessive water from affecting the washing effect.

[0085] In addition, in other embodiments, when the first water level is detected to have not reached the preset water level, the washing module can be controlled to start and perform the washing operation as needed during the water injection process through the water inlet module; when the first water level is detected to have reached the preset water level, in addition to controlling the washing module to start and perform the washing operation, the water inlet module can also be controlled to open as needed.

[0086] In this embodiment, by detecting the first water level, the washing process can be automatically continued when there is sufficient water in the washing chamber, and water can be automatically replenished when there is insufficient water. This ensures that even if the washing process is interrupted by opening and closing the door, the kitchen utensils such as tableware in the washing chamber can still achieve a better cleaning effect. Moreover, the whole process does not require user operation, making it convenient for users to use.

[0087] In other embodiments, if the drainage process of the drainage module in step S10 is to discharge all the water in the washing chamber to the outside of the washing chamber, then steps S21 and S22 can be skipped, and step S20a can be executed directly.

[0088] Furthermore, in this embodiment, referring to Figure 3 After step S20a, the following steps are also included:

[0089] Step S30: During the process of the water inlet module injecting water into the washing chamber, the second water level in the washing chamber is detected;

[0090] During the process of the water inlet module injecting water into the washing chamber, the second digital detection step can be executed in real time or at set intervals.

[0091] The second water level can be detected by a water level sensor inside the washing chamber; it can also be determined by acquiring the operating parameters of other water level-related modules inside the washing chamber.

[0092] Step S40: When the second water level is greater than or equal to the preset water level, or when the second water level is less than the preset water level and the water injection volume of the water inlet module is greater than or equal to the set water volume, control the water inlet module to stop injecting water into the washing chamber, and control the washing module of the kitchen appliance to start and perform the washing operation.

[0093] When the detected second water level reaches the preset water level, it indicates that the current water volume in the washing chamber meets the washing water requirements of the current washing mode. At this time, the water inlet module is closed to stop water replenishment, and the washing module is started to perform the washing operation. This ensures that there is sufficient water to continue washing after the kitchen appliance is opened and closed, thus guaranteeing the washing effect of the items in the washing chamber. When the detected second water level does not reach the preset water level, it indicates that the current water volume in the washing chamber does not meet the washing water requirements of the current washing mode. At this time, the water inlet module remains open to continue replenishing water to the washing chamber until the water volume in the washing chamber meets the washing requirements.

[0094] The water volume of the water inlet module can be detected by a flow meter installed at the water inlet or water inlet channel, or by analyzing the water level detection data of the water storage device (which is connected to the water inlet of the washing chamber through the water inlet channel) (e.g., detecting water intake). Here, if the detected second water level does not reach the preset water level, but the water volume injected into the washing chamber by the water inlet module reaches the set water volume, it can be considered that the low water level is due to the operation of certain water treatment modules in the washing chamber (e.g., a water extraction module installed in the washing chamber that extracts some water from the washing chamber for subsequent washing operations). Since the total water volume in the washing chamber is sufficient to meet the washing needs, the water inlet module is shut off to stop water replenishment, and the washing module is started to perform the washing operation. This ensures that the kitchen appliances can continue washing with sufficient water after the door is opened and closed, thus guaranteeing the washing effect on the objects in the washing chamber. Specifically, the set water volume can be greater than or equal to the target water volume corresponding to the preset water level.

[0095] In this embodiment, during the water filling process of the water inlet module, the water level and water volume are monitored to identify whether the water volume in the washing chamber is sufficient to meet the washing requirements. When there is enough water in the washing chamber to meet the washing requirements, the water filling is automatically stopped and the washing continues. This ensures that even if the washing process is interrupted by opening and closing the door, the kitchen utensils such as tableware in the washing chamber can still achieve a better cleaning effect. Moreover, the whole process does not require user operation, making it convenient for users.

[0096] In other embodiments, steps S30 and S40 described above may not be performed. During the execution of step S20a, the duration of water injection by the water inlet module can be counted. When the duration is greater than or equal to the target duration, the water volume in the washing chamber is considered to have met the washing requirements. At this time, the water inlet module can be stopped to stop water injection, and the washing module can be controlled to start the washing operation. The target duration can be determined based on a preset water level. Different preset water levels correspond to different target durations, thus ensuring that washing can continue after the door is closed without water level detection.

[0097] Furthermore, based on the above embodiments, another embodiment of the control method for kitchen appliances of this application is proposed. In this embodiment, reference is made to... Figure 4 The process of detecting the second water level in the washing chamber is as follows:

[0098] Step S50: Control the washing pump in the washing chamber to turn on and detect the operating current of the washing pump; when the washing pump is turned on, it draws water from the washing chamber and performs a water spraying operation.

[0099] It should be noted that the washing pump pumps water in and spray water simultaneously.

[0100] During the process of detecting the operating current after the washing pump is powered on, the washing pump can maintain operation at a preset power. This preset power can be a fixed parameter set in advance, a parameter determined based on the current washing mode, or a parameter determined based on the first water level. Furthermore, in other embodiments, during the process of detecting the operating current after the washing pump is powered on, the washing pump can operate at a varying power according to a preset pattern.

[0101] The operating current of the washing pump can be detected by a current detection module connected to the washing pump, or by the current detection circuit built into the controller.

[0102] The operating current can be the current value of the washing pump detected at a certain moment; or it can include the current values ​​of the washing pump detected at multiple different moments.

[0103] It should be noted that during the current detection process, the water inlet module operates with fixed parameters to inject water into the washing chamber at a uniform rate.

[0104] Step S60: Determine the second water level based on the operating current.

[0105] Different operating currents correspond to different second water levels. The correspondence between operating current and second water level can be preset, such as a calculated relationship or a mapping relationship. Based on this preset correspondence, the second water level corresponding to the current operating current can be determined.

[0106] Among them, the operating current and the second water level have different correspondences under different operating power of washing pumps. Based on this, the correspondence between the operating current and the second water level can be obtained according to the current fixed operating power value or the change law of the operating power of the washing pump. The second water level corresponding to the current operating current can be determined based on the obtained correspondence.

[0107] In this embodiment, since the resistance of the washing pump to pump water varies at different water levels, its operating current will also vary. Here, the operating current of the washing pump is used to detect the current second water level in the washing chamber, so that the water level information in the washing chamber can be effectively detected without the need to install an additional water level sensor, thus saving costs.

[0108] In this embodiment, the operating current includes multiple current values ​​detected at different times, and the step of determining the second water level based on the operating current includes:

[0109] Step S61: Determine the average current value, maximum current value, and minimum current value corresponding to the multiple current values;

[0110] The number of current values ​​used to determine the second water level can be selected according to actual needs. Specifically, the current of the washing pump can be detected at set intervals within a preset time period to obtain multiple current values. The average current value is obtained by calculating the average of these multiple current values. The preset time period and the set interval can be determined based on the water injection rate of the water inlet module. The obtained multiple current values ​​are compared pairwise, and the current value with the largest value is taken as the maximum current value, and the current value with the smallest value is taken as the minimum current value.

[0111] Step S62: Determine the second water level based on the average current value, the maximum current value, and the minimum current value.

[0112] Different average, minimum, and maximum current values ​​correspond to different second water levels. The correspondence between these values ​​and the second water level can be preset, and can be a calculated relationship, a mapping relationship, etc. Based on this correspondence, the second water level corresponding to the current washing pump's average, minimum, and maximum current values ​​can be determined. For example, defining the average current value as I... E The maximum current value is I max The minimum current value is I min The water level is M, and we can pre-establish M = f(I) E I max I minBased on the functional relationship between the current values ​​of the washing pump, after determining the average current, minimum current, and maximum current, these values ​​can be substituted into M = f(I). E I max I min The current water level in the washing chamber is calculated using the function.

[0113] In this embodiment, since the water level of the washing pump changes over time during the simultaneous pumping and spraying process, the current of the washing pump is at its minimum at the lowest water level and at its maximum at the highest water level. The average current over a certain period of time can represent the approximate amount of water injected during that period. Based on this, this embodiment combines the average, maximum, and minimum values ​​of multiple current values ​​of the washing pump detected at different times to determine the second water level. This ensures that the determined second water level accurately represents the actual water level in the washing chamber, ensuring the accuracy of the determined first or second water level. Based on the first or second water level, the corresponding water replenishment and washing operations can be executed in a timely manner, ensuring that the kitchen appliances can quickly resume the normal washing process after the door is opened and closed during the washing process.

[0114] Specifically, in this embodiment, step S62 includes: when the average current value is less than or equal to the target current threshold and the deviation between the maximum current value and the minimum current value is greater than or equal to a set deviation threshold, determining the second water level as a water level value less than or equal to the preset water level; when the average current value is greater than the target current threshold, or when the deviation between the maximum current value and the minimum current value is less than the set deviation threshold, determining the second water level as a water level value greater than the preset water level; wherein, both the set deviation threshold and the target current threshold are determined based on the preset water level.

[0115] A higher preset water level results in a higher target current threshold, and a higher preset water level also results in a lower set deviation threshold. When the total water volume in the washing chamber is large, the pumping resistance of the washing pump is greater, requiring a larger operating current. Conversely, when the total water volume is small, the pumping resistance is smaller, requiring a smaller operating current. Furthermore, when the total water volume in the washing chamber is large, the water level change caused by the pumping and spraying of water is smaller; conversely, when the total water volume is small, the water level change caused by the pumping and spraying of water is larger. Therefore, by comparing the average current value with the target current threshold, and comparing the deviation between the maximum and minimum current values ​​with the set deviation threshold, the system can accurately reflect whether the current water level in the washing chamber is higher or lower than the preset water level. This determines the current water level range without needing to determine the specific current water level value. This allows for rapid acquisition of the current water level in the washing chamber, and based on the determined water level, the system controls the further actions of the kitchen appliances, ensuring that the kitchen appliances can quickly resume normal washing operations after the door is opened and closed.

[0116] In other embodiments, after the door is closed, it is not necessary to detect the first water level; water can be directly injected through the water inlet module, and control can be performed based on the second water level according to the scheme in this embodiment during the water injection process. It should be noted that when the control process of the kitchen appliance in any of the above embodiments involves water level detection, the current water level of the washing chamber, such as the first water level mentioned above, can be detected by analogy with the scheme mentioned in this embodiment.

[0117] Furthermore, based on any of the above embodiments, in this embodiment, before the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes: when the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, detecting the water temperature in the washing chamber; when the water temperature is greater than or equal to a set temperature threshold, executing the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance. When the water temperature is less than the set temperature threshold, the drain module can be closed to prevent drainage. The set temperature threshold is specifically the maximum allowable water temperature that can protect the user from scalding by the steam generated by the water in the washing chamber. The set temperature threshold can be determined according to the model of the kitchen appliance. The water temperature in the washing chamber is specifically detected by a temperature sensor installed in the washing chamber. Here, when the water temperature is greater than or equal to the set temperature threshold, it indicates that the user is at risk of scalding before draining the water from the washing chamber, thereby effectively avoiding unnecessary drainage, further ensuring that the user can quickly enter and continue the washing process after opening and closing the door, ensuring the cleaning effect of tableware and other kitchen utensils.

[0118] Furthermore, based on any of the above embodiments, in this embodiment, the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance includes: controlling the drain module to open; and controlling the drain module to alternately open and close when the opening duration of the drain module is greater than or equal to a first preset duration. The first preset duration can be set according to actual conditions. Since drain modules (such as drain pumps) are prone to malfunctions such as insufficient starting power when used for too long, this may cause the drain module to fail to start normally when it is controlled to open. Therefore, in this embodiment, when the opening duration of the drain module is greater than or equal to the first preset duration, controlling the drain module to alternately open and close helps to increase the starting torque of the drain module, ensuring that the drain module can start and operate smoothly, which is conducive to the drainage of water in the washing chamber, thereby achieving effective protection for the user. Furthermore, when the opening duration of the drainage module is greater than or equal to the first preset duration, water level detection can be performed in the manner mentioned in the above embodiments. If the detected water level is greater than the set water level, it indicates that the drainage module has failed to start drainage normally. In this case, the drainage module can be controlled to alternately open and close to ensure that the water in the washing chamber can be smoothly discharged to the outside. If the detected water level is less than or equal to the set water level, it indicates that the drainage module can start drainage normally. In this case, the drainage module can be controlled to maintain continuous operation to improve drainage efficiency.

[0119] Furthermore, based on any of the above embodiments, in this embodiment, before the step of controlling the drain module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes: when the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, controlling the heating device corresponding to the washing chamber to turn off. Turning off the heating device before draining the water from the washing chamber can effectively reduce the water temperature in the washing chamber, and at the same time avoid generating a large amount of steam that could scald the user when there is little water, thereby further improving the user's safety when opening the door during the washing process. In addition to turning off the heating device, all other loads in the kitchen appliance except for the drain module can also be turned off, which helps to increase the rate of temperature decrease in the washing chamber.

[0120] Based on this, after the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes: obtaining the duration of the kitchen appliance door being closed; if the duration is less than a second preset duration, controlling the heating device to remain off; if the duration is greater than or equal to the second preset duration, controlling the heating device to turn on. The second preset duration can be set according to actual needs, for example, it can be set to 1s, 2s, or 3s. If other loads are all off during the drainage process, other loads can be turned on simultaneously with the heating device to ensure the normal use of the kitchen appliance.

[0121] In this embodiment, if the water level in the washing chamber does not reach the preset water level when the duration is greater than or equal to the second preset duration, the heating device can be turned on to preheat the water in the washing chamber before the washing operation, thereby improving the washing efficiency of subsequent washing operations. In other embodiments, if the water level in the washing chamber does not reach the preset water level when the duration is greater than or equal to the second preset duration, the heating device can be turned off until the water level reaches the preset water level or the water volume is greater than or equal to the set water volume during the washing operation, at which point the heating device is turned on.

[0122] In this embodiment, when the door is opened to drain water during the washing process and then closed again, the heating device is turned on after a delay. This ensures that the heating device is turned on only when there is a certain amount of water in the washing chamber, avoiding dry burning of the washing chamber in the initial stage after closing the door, which is beneficial to the normal use of kitchen appliances.

[0123] Furthermore, embodiments of the present invention also propose a computer-readable storage medium storing a control program for a kitchen appliance, wherein when the control program for the kitchen appliance is executed by a processor, it implements the relevant steps of any embodiment of the control method for the kitchen appliance described above.

[0124] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0125] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0126] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, kitchen appliance, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0127] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for controlling a kitchen appliance, characterized in that, The method for controlling the kitchen appliances includes the following steps: When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the drain module of the kitchen appliance is controlled to drain the water in the washing chamber of the kitchen appliance. When the door of the kitchen appliance is opened and then closed again, the water inlet module of the kitchen appliance is controlled to inject water into the washing chamber. During the process of the water inlet module injecting water into the washing chamber, the second water level in the washing chamber is detected; When the second water level in the washing chamber is greater than or equal to the preset water level, or when the second water level in the washing chamber is less than the preset water level and the water injection volume of the water inlet module is greater than or equal to the set water volume, the water inlet module is controlled to stop injecting water into the washing chamber, and the washing module is controlled to start performing the washing operation. The step of detecting the second water level in the washing chamber includes: The system controls the washing pump inside the washing chamber to start and detects multiple current values ​​of the washing pump at different times; when the washing pump is started, it draws water from the washing chamber and performs a water spraying operation. Determine the average current value, maximum current value, and minimum current value corresponding to the multiple current values; When the average current value is less than or equal to the target current threshold, and the deviation between the maximum current value and the minimum current value is greater than or equal to the set deviation threshold, the second water level in the washing chamber is determined to be a water level value less than or equal to the preset water level. When the average current value is greater than the target current threshold, or when the deviation between the maximum current value and the minimum current value is less than the set deviation threshold, the second water level in the washing chamber is determined to be a water level value greater than the preset water level; wherein, the set deviation threshold and the target current threshold are both determined based on the preset water level.

2. The control method for kitchen appliances as described in claim 1, characterized in that, Before the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes: When the door of the kitchen appliance is opened and then closed again, the first water level in the washing chamber is detected; When the first water level is lower than the preset water level, the step of injecting water into the washing chamber by the water inlet module that controls the kitchen appliance is executed; When the first water level is greater than or equal to the preset water level, the washing module of the kitchen appliance is controlled to start and perform the washing operation.

3. The control method for kitchen appliances as described in claim 1, characterized in that, The step of controlling the drainage module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance includes: Control the drainage module to turn on; When the opening duration of the drainage module is greater than or equal to a first preset duration, the drainage module is controlled to alternately open and close.

4. The control method for kitchen appliances as described in any one of claims 1 to 3, characterized in that, Before the step of controlling the drainage module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes: When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the water temperature inside the washing chamber is detected. When the water temperature is greater than or equal to a set temperature threshold, the step of draining the water in the washing chamber of the kitchen appliance by controlling the drain module of the kitchen appliance is executed.

5. The control method for kitchen appliances as described in any one of claims 1 to 3, characterized in that, Before the step of controlling the drainage module of the kitchen appliance to drain the water from the washing chamber of the kitchen appliance, the method further includes: When the kitchen appliance is in washing mode, if the door of the kitchen appliance is opened, the heating device corresponding to the washing chamber will be turned off. After the step of controlling the water inlet module of the kitchen appliance to inject water into the washing chamber, the method further includes: The duration of the kitchen appliance door being closed is obtained; if the duration is less than a second preset duration, the heating device is controlled to remain in the off state. If the duration is greater than or equal to the second preset duration, the heating device is turned on.

6. A kitchen appliance, characterized in that, The kitchen appliance includes: a memory, a processor, and a control program for the kitchen appliance stored in the memory and executable on the processor. When the control program for the kitchen appliance is executed by the processor, it implements the steps of the control method for the kitchen appliance as described in any one of claims 1 to 5.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for a kitchen appliance, which, when executed by a processor, implements the steps of the control method for a kitchen appliance as described in any one of claims 1 to 5.

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