Reset method and device of water diversion valve and dish washing machine

Abstract

The application relates to a reset method and device of a water distribution valve and a dish washing machine. The method comprises the following steps: in the case that a power-off abnormal event occurs during switching of a water distribution component to a target state position, a reset instruction is output to a driving motor to instruct the driving motor to drive a rotating shaft to rotate, and a rotating time is determined in response to a position signal output by a position detection component; whether the water distribution component completes the reset is judged based on the rotating time; in the case that the water distribution component completes the reset, a recovery instruction is output to instruct the driving motor to drive the rotating shaft to rotate, so that the water distribution component rotates to the target state position; the application instructs the water distribution component to complete the reset and rotate to the target state position in response to the power-off abnormal event occurring during switching of the water distribution component to the target state position, so that the position deviation of the water distribution component is eliminated, the positioning of the water distribution valve is avoided, and the water distribution valve can be opened according to the program setting to spray water through corresponding spray arms.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, and in particular to a method, device, and dishwasher for resetting a water distribution valve. Background Technology

[0002] Currently, dishwashers often use water distribution valves to indicate the on / off status of each water path, thereby controlling the corresponding spray arms to spray water.

[0003] However, in the event of an abnormal power outage, if the dishwasher is powered back on shortly afterward, it will continue to execute the washing program that was running before the power outage. If a power outage occurs during the switching process of the water divider valve, the water divider valve will continue to perform the switching action after the power is restored. This will cause the blades (water divider plates) of the water divider valve to shift in position, thus affecting the accuracy of the dishwasher's washing control. Summary of the Invention

[0004] Therefore, it is necessary to provide a method, device, and dishwasher for resetting a water distribution valve that can reset the water distribution plate, in order to address the above-mentioned technical problems.

[0005] In a first aspect, this application provides a method for resetting a water distribution valve. The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the water distribution component to rotate via the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component, which is used to obtain the state position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The method includes:

[0006] In response to a power failure event that occurs during the switching of the water distribution component to the target state position, a reset command is output to the drive motor; the reset command is used to instruct the drive motor to drive the shaft to rotate in order to initiate the reset.

[0007] In response to receiving two consecutive position signals output sequentially by the position detection component, the rotation time is determined based on the two consecutive position signals;

[0008] The time taken to rotate is used to determine whether the water distribution component has completed its reset.

[0009] When the water distribution component has completed its reset, a recovery command is output. The recovery command is used to instruct the drive motor to drive the shaft to rotate so that the water distribution component rotates to the target state position.

[0010] In one embodiment, determining whether the water-dividing component has completed its reset based on the rotation time includes:

[0011] If the rotation time exceeds the preset duration, determine whether a position signal is received again from the position detection component;

[0012] If so, the water distribution component will complete its reset.

[0013] In one embodiment, it further includes:

[0014] If the rotation time is less than or equal to the preset duration, continue to obtain the next rotation time until the obtained rotation time is greater than the preset duration.

[0015] In one embodiment, in response to a power failure event occurring during the switching of the water distribution component to the target state position, a reset command is output to the drive motor, including:

[0016] After the dishwasher is powered on, in response to a power outage event that occurs during the period when the water distribution component switches to the target state position, the duration of the dishwasher's power outage is obtained.

[0017] If the power outage duration is less than or equal to the power outage threshold, a reset command is output.

[0018] In one embodiment, a third contact, a second contact, and a first contact are sequentially spaced apart along the rotation direction of the rotating shaft. The third contact, the second contact, and the first contact are used to trigger the position detection component so that the position detection component outputs a corresponding position signal. Along the rotation direction, the travel distance from the first contact to the third contact is greater than the travel distance from the third contact to the first contact.

[0019] In one embodiment, the third contact corresponds to the third state position of the water distribution component. When in the third state position, the upper spray arm and top spray arm of the dishwasher are working, while the lower spray arm of the dishwasher is not working.

[0020] The second contact point corresponds to the second state position of the water distribution component. When in the second state position, the lower spray arm, upper spray arm, and top spray arm of the dishwasher are working. The second state position is the reset point of the water distribution component.

[0021] The first contact point corresponds to the first state position of the water distribution component. When in the first state position, the lower spray arm and the top spray arm of the dishwasher are working, while the upper spray arm of the dishwasher is not working.

[0022] In one embodiment, the preset duration is the time required for the shaft to complete the rotation amount; the rotation amount is one-third of the circumference of the shaft.

[0023] Secondly, this application also provides a reset device for a water distribution valve. The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the water distribution component to rotate via the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component, which is used to obtain the state position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The device includes:

[0024] The reset control module is used to respond to a power failure event that occurs during the rotation of the water distribution component to the target state position, and output a reset command to the drive motor; the reset command is used to instruct the drive motor to drive the shaft to rotate.

[0025] The time acquisition module is used to determine the rotation time based on two consecutive position signals received from the position detection component.

[0026] The reset judgment module is used to determine whether the water distribution component has completed the reset based on the rotation time.

[0027] The recovery control module is used to output a recovery command after the water distribution component has completed its reset. The recovery command is used to instruct the drive motor to drive the shaft to rotate so that the water distribution component rotates to the target state position.

[0028] Thirdly, this application also provides a dishwasher. It includes a main control board and a water distribution valve connected to the main control board;

[0029] The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the rotating shaft to rotate, which in turn drives the water distribution component connected to the rotating shaft to rotate, thereby switching the water path. The water distribution valve also includes a position detection component for connecting to the dishwasher's main control board. The position detection component is used to obtain the status position of the water distribution component by detecting the rotation position of the rotating shaft, and outputs a corresponding position signal to the main control board.

[0030] The main control board is used to execute the aforementioned method for resetting the water distribution valve.

[0031] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the aforementioned method for resetting the water distribution valve.

[0032] The aforementioned water distribution valve reset method, device, and dishwasher, in the event of a power outage during the switching of the water distribution component to the target state position, output a reset command to the drive motor, instructing the drive motor to rotate the shaft. Responding to a position signal received from a position detection component, the rotation time is determined based on two consecutive position signals. The rotation time is used to determine whether the water distribution component has completed its reset. If the water distribution component has completed its reset, a recovery command is output, instructing the drive motor to rotate the shaft, causing the water distribution component to rotate to the target state position. This application, by responding to a power outage during the switching of the water distribution component to the target state position, instructs the water distribution component to reset, and upon completion of the reset, instructs the water distribution component to rotate to the target state position. This eliminates the positional deviation that occurs when a power outage occurs during the switching of the water distribution component to the target state position, ensuring that the water distribution valve can open the corresponding spray arm for water spraying according to the programmed requirements. The accuracy of the identification is improved by recognizing the two position signals and the rotation time during the reset process. Attached Figure Description

[0033] Figure 1 This is a structural block diagram of a dishwasher in one embodiment;

[0034] Figure 2 This is a flowchart illustrating the method for resetting the water distribution valve in one embodiment;

[0035] Figure 3 This is a schematic diagram of the shaft structure in one embodiment;

[0036] Figure 4 This is a flowchart illustrating the reset method for the water distribution valve in another embodiment;

[0037] Figure 5 This is a structural block diagram of the resetting device for the water distribution valve in one embodiment. Detailed Implementation

[0038] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0040] It is understood that, and should be noted, the terms “first” and “second” in this application are used to distinguish different objects, rather than to describe a specific order.

[0041] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0042] Currently, dishwashers typically have a water distribution valve in the sink, which has a lower spray arm outlet, a top spray arm outlet, and an upper spray arm outlet. The water distribution valve has a water distribution plate, which is driven by a motor to control the flow of water through different outlets.

[0043] However, if the dishwasher experiences an abnormal power outage and is powered back on within a short period (three minutes), it will continue to run according to the program in which the power was cut off. This will cause the water distribution component (water distribution plate) to shift position, and the water distribution valve will not be able to open the corresponding spray arm to spray water as required by the program.

[0044] The water distribution valve reset method provided in this application embodiment can be applied to, for example, Figure 1 The dishwasher 100 shown includes a main control board 102 and a water distribution valve 104, with the main control board 102 connected to the water distribution valve 104.

[0045] Furthermore, the water distribution valve 104 may include a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the rotating shaft to rotate, thereby rotating the water distribution component connected to the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component, which is used to obtain the status position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The main control board 102 receives and outputs corresponding working instructions and signals to instruct the drive motor in the water distribution valve 104 to drive the water distribution component in the water distribution valve 104 to complete the reset, eliminating the positional offset of the water distribution plate. Then, the main control board 102 instructs the water distribution component to rotate to the corresponding position (target status position) according to the program running in the dishwasher 100 when the power is off, ensuring that the water distribution valve 104 can open the corresponding spray arm to perform water spraying operation according to the program setting requirements.

[0046] In one embodiment, such as Figure 2 As shown, a method for resetting a water distribution valve is provided. Taking the application of this method to the main control board as an example, the method includes the following steps:

[0047] S202, in response to a power failure abnormality event that occurs during the switching of the water distribution component to the target state position, outputs a reset command to the drive motor; the reset command is used to instruct the drive motor to drive the shaft to rotate, so as to initiate the reset.

[0048] Specifically, the main control board detects a power failure event during the switching of the water distribution component to the target state position and outputs a reset command to the drive motor, instructing the drive motor in the water distribution valve to drive the rotating shaft to rotate; wherein, the rotating shaft is connected to the water distribution component, and when the rotating shaft rotates, the water distribution component rotates with the rotating shaft to initiate the reset.

[0049] In one embodiment, in response to a power failure event occurring during the switching of the water distribution component to the target state position, a reset command is output to the drive motor, including:

[0050] After the dishwasher is powered on, in response to a power outage event that occurs during the period when the water distribution component switches to the target state position, the duration of the dishwasher's power outage is obtained.

[0051] If the power outage duration is less than or equal to the power outage threshold, a reset command is output.

[0052] The power outage threshold can be set according to the actual situation. If the power outage threshold is too long, the water in the dishwasher may cool down and the dishwasher may need to be restarted. In this embodiment, the power outage threshold is 3 minutes as an example. The target status bit can be set according to the actual situation.

[0053] Specifically, the main control board can obtain the power outage duration based on the power outage and power-on status. The power outage duration can be used to characterize the duration of the abnormal power outage event in the dishwasher. The main control board obtains the power outage duration after the water valve is powered on. If the power outage duration is less than or equal to 3 minutes (power outage threshold), the main control board outputs a reset command. If the power outage duration is greater than 3 minutes (power outage threshold), the dishwasher's washing program needs to be restarted, that is, the washing program before the power outage will not continue.

[0054] In this embodiment, a power outage threshold is set according to the actual situation, the power outage duration and the power outage threshold are compared, and corresponding operations are performed based on the comparison results, thereby resetting the water distribution valve or restarting the dishwasher program.

[0055] S204, in response to receiving two consecutive position signals output sequentially by the position detection component, determines the rotation time based on the two consecutive position signals.

[0056] Specifically, the main control board responds to receiving the first position signal and the second position signal (two consecutive position signals) sequentially output by the position detection component, and obtains the time interval between receiving the first position signal and receiving the second position signal based on the first position signal and the second position signal, that is, obtains the rotation time.

[0057] S206, determine whether the water distribution component has completed reset based on the rotation time.

[0058] Specifically, the main control board determines the state of the water distribution component based on the acquired rotation time, and determines the completion of the water distribution component's reset based on the state of the water distribution component.

[0059] It should be noted that the state position of the water distribution component can include a first state position, a second state position, and a third state position; wherein, when the water distribution component is in the second state position, it means that the water distribution component has completed the reset, that is, the second state position is the reset state position; the third state position can be the state position adjacent to the second state position along the rotation direction of the shaft, that is, the third state position is the state position preceding the second state position along the rotation direction.

[0060] In one embodiment, determining whether the water-dividing component has completed its reset based on the rotation time includes:

[0061] If the rotation time exceeds the preset duration, determine whether a position signal is received again from the position detection component;

[0062] If so, the water distribution component will complete its reset.

[0063] The preset duration can be set according to the actual situation.

[0064] Specifically, if the rotation time obtained by the main control board is greater than the preset time, it can be indicated that the state position corresponding to the second position signal is the third state position; that is, when the main control board receives the position signal output from the position detection component again, it indicates that the water distribution component is in the second state position, and at this time the water distribution component completes the reset.

[0065] In some examples, the time required for the water distribution component to switch from the state position corresponding to the first position signal (first state position) to the state position corresponding to the second position signal (third state position) is the same as the time required to complete two-thirds of the rotation axis circumference, and the time required for the water distribution component to switch from the third state position to the second state position is the same as the time required to complete one-sixth of the rotation axis circumference. In this case, the preset duration can be between the time required to complete one-sixth of the rotation axis circumference and the time required to complete two-thirds of the rotation axis circumference.

[0066] In this embodiment of the application, based on the comparison result of rotation time and preset duration, if the rotation time is greater than the preset duration and a position signal is received again from the position detection component, it is determined that the water distribution component has completed the reset, thereby eliminating the position offset that occurs when a power failure event occurs during the switching of the water distribution component to the target state position.

[0067] In one embodiment, it further includes:

[0068] If the rotation time is less than or equal to the preset duration, continue to obtain the next rotation time until the obtained rotation time is greater than the preset duration.

[0069] Specifically, if the main control board detects that the rotation time is less than or equal to the preset duration, it indicates that the water distribution component has not switched to the third state position. At this time, the drive motor continues to drive the shaft to rotate to obtain the next rotation time until the obtained rotation time is greater than the preset duration.

[0070] In this embodiment of the application, by comparing the rotation time and the preset duration, it is determined whether the water distribution component has rotated to the previous state position (the third state position) along the rotation direction, thus ensuring the accuracy of the water distribution valve reset.

[0071] In one embodiment, the preset duration is the time required for the shaft to complete the rotation amount; the rotation amount is one-third of the circumference of the shaft.

[0072] Specifically, in this embodiment of the application, the preset duration is set to the time required for the rotating shaft to rotate one-third of the circumference of the rotating shaft.

[0073] S208, when the water distribution component has completed the reset, outputs a recovery command. The recovery command is used to instruct the drive motor to drive the shaft to rotate so that the water distribution component rotates to the target state position.

[0074] Specifically, when the water distribution component has completed its reset, the main control board outputs a recovery command, instructing the drive motor to drive the rotating shaft to rotate, thereby causing the water distribution component to rotate to the target state position.

[0075] In one embodiment, such as Figure 3 As shown, a third contact, a second contact, and a first contact are sequentially spaced along the rotation direction of the rotating shaft. The third contact, the second contact, and the first contact are used to trigger the position detection component so that the position detection component outputs a corresponding position signal. Along the rotation direction, the travel distance from the first contact to the third contact is greater than the travel distance from the third contact to the first contact.

[0076] Specifically, such as Figure 3 As shown, Figure 3The arrows indicate the direction of rotation of the shaft; depending on the direction of rotation of the shaft, the state of the water distribution component can be switched as follows: from the first state to the third state; from the third state to the second state; from the second state to the first state.

[0077] Furthermore, the rotation of the shaft can drive the water distribution component to rotate. The first state position can correspond to the first contact point; the second state position can correspond to the second contact point; the third state position can correspond to the third contact point; the target state position can be any one of the first state position, the second state position, and the third state position.

[0078] For example, when the target state is the first state, the water distribution component first switches to the second state (the water distribution component completes the reset), and then switches back to the first state; when the target state is the second state, the water distribution component completes the reset and switches to the target state simultaneously, without needing to switch again.

[0079] In one embodiment, the third contact corresponds to the third state position of the water distribution component. When in the third state position, the upper spray arm and top spray arm of the dishwasher are working, while the lower spray arm of the dishwasher is not working.

[0080] The second contact point corresponds to the second state position of the water distribution component. When in the second state position, the lower spray arm, upper spray arm, and top spray arm of the dishwasher are working. The second state position is the reset point of the water distribution component.

[0081] The first contact point corresponds to the first state position of the water distribution component. When in the first state position, the lower spray arm and the top spray arm of the dishwasher are working, while the upper spray arm of the dishwasher is not working.

[0082] Specifically, with the total water consumption of the dishwasher remaining constant, the water pressure sprayed by the dishwasher is at its maximum when the water distribution component is in the third state position; the water pressure sprayed by the dishwasher is at its minimum when the water distribution component is in the second state position; and the water pressure sprayed by the dishwasher is moderate when the water distribution component is in the first state position.

[0083] Optionally, the travel distance from the third contact to the second contact is equal to the travel distance from the second contact to the first contact.

[0084] Furthermore, during the switching process of the water distribution component, the time consumed for the water pressure sprayed by the dishwasher to switch from low to medium is relatively short, while the time consumed for the water pressure sprayed by the dishwasher to switch from medium to high is relatively long. This application sets the overall switching process of the water distribution component as follows: from the second state position to the first state position to the third state position (counterclockwise rotation), the water pressure sprayed by the dishwasher gradually increases, making the switching and reset processes smoother and more accurate. This avoids problems such as rapid changes in the water pressure sprayed by the dishwasher causing the pressure of the water distribution component to fluctuate and making it easy to misposition. In addition, the noise generated when the water pressure sprayed by the dishwasher switches from low to high is relatively large. In this application, the switching time corresponding to the water pressure sprayed by the dishwasher switching from low to high is short, achieving a certain noise reduction effect.

[0085] In some examples, if the state position of the water divider is set to the state position corresponding to the relatively moderate water pressure after the shaft rotates to the second contact (reset point), the reset time is relatively moderate; if the state position of the water divider is set to the state position corresponding to the relatively minimum water pressure after the microswitch contacts the first contact, the reset time is relatively longest; if the state position of the water divider is set to the state position corresponding to the relatively maximum water pressure after the microswitch contacts the third contact, the reset time is relatively shortest. Therefore, when the rotation time is longer than the preset time, by reasonably setting the position of each state position, that is, setting the reset point at the position corresponding to the second contact, the reset process is smoother, the noise is lower, and the reset time is shorter.

[0086] Understandably, when the microswitch contacts the contact point, the microswitch outputs a corresponding position signal to the dishwasher's main control board. After receiving the signal, the main control board will continue to supply power to the drive motor through the relay for a period of time, so that the contact point of the rotating shaft completely passes through the microswitch, that is, the microswitch stops outputting the position signal, and the water distribution valve completes the corresponding switching.

[0087] To facilitate understanding by those skilled in the art, the reset method of the water distribution valve is explained below with reference to a specific example. The time required for the water distribution component to switch from the third state position to the second state position is one-sixth of the time required for the water distribution plate (water distribution component) to rotate one revolution. The time required for the water distribution component to switch from the second state position to the first state position is one-sixth of the time required for the water distribution plate to rotate one revolution. The time required for the water distribution component to switch from the first state position to the third state position is two-thirds of the time required for the water distribution plate to rotate one revolution.

[0088] like Figure 4 As shown, if the main control board determines that the dishwasher was not powered on again within 3 minutes after the power outage during the water valve switching process, the dishwasher will continue to run according to the program settings.

[0089] When the main control board determines that the dishwasher will be powered on again within 3 minutes after a power outage during the water valve switching process, the water valve drive motor (drive motor) will be continuously powered on, and the drive shaft will start to rotate. The main control board determines the rotation time based on two consecutive position signals output by the position detection component. The position detection component outputs a position signal once each time it triggers the water valve sensor switch, and the rotation time can also refer to the time between two consecutive triggers of the water valve sensor switch.

[0090] If the rotation time does not exceed one-third of the time required for the water divider to rotate one-third of its circumference, it can be considered that the water divider has rotated to the first state position. The water divider valve drive motor continues to be powered, the drive shaft starts to rotate and the rotation time is calculated again until the rotation time exceeds one-third of the time required for the water divider to rotate one-third of its circumference.

[0091] When the rotation time exceeds one-third of the time required for the water divider to complete one revolution, that is, when the rotation time exceeds one-third of the time required for the water divider to rotate one-third of its circumference, it can be indicated that the water divider has rotated to the first state position. The water divider valve drive motor drives the shaft to rotate the water divider to the next microswitch trigger point (position detection component trigger point), that is, the water divider valve drive motor drives the shaft to rotate the water divider to the reset point (second state position). After the initial reset is completed, the main control board instructs the water divider to rotate to the corresponding position according to the dishwasher's operating program during the power outage, and the dishwasher continues to operate according to the program settings.

[0092] In the aforementioned method for resetting the water distribution valve, if a power outage occurs during the switching of the water distribution component to the target state position, a reset command is output to the drive motor to instruct the drive motor to drive the shaft to rotate. In response to the position signal received from the position detection component, the rotation time is determined based on two consecutive position signals. The rotation time is used to determine whether the water distribution component has completed its reset. If the water distribution component has completed its reset, a recovery command is output to instruct the drive motor to drive the shaft to rotate, so that the water distribution component rotates to the target state position. This application, by resetting the water distribution component and then instructing it to rotate to the target state position and continue operating according to the corresponding program, eliminates the positional offset of the water distribution plate, ensuring the accuracy of the water distribution valve reset and enabling the water distribution valve to open the corresponding spray arm for water spraying according to the program settings.

[0093] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0094] Based on the same inventive concept, this application also provides a water distribution valve resetting device for implementing the above-mentioned water distribution valve resetting method. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more water distribution valve resetting device embodiments provided below can be found in the limitations of the water distribution valve resetting method described above, and will not be repeated here.

[0095] In one embodiment, such as Figure 5 As shown, a reset device 500 for a water distribution valve is provided. The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the water distribution component to rotate via the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component, which is used to obtain the state position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The device includes:

[0096] The reset control module 501 is used to output a reset command to the drive motor in response to a power failure abnormality event that occurs during the rotation of the water distribution component to the target state position; the reset command is used to instruct the drive motor to drive the rotating shaft to rotate.

[0097] The time acquisition module 502 is used to determine the rotation time based on two consecutive position signals output sequentially by the position detection component in response to receiving two consecutive position signals.

[0098] The reset judgment module 503 is used to determine whether the water distribution component has completed the reset based on the rotation time.

[0099] The recovery control module 504 is used to output a recovery command when the water distribution component has completed the reset. The recovery command is used to instruct the drive motor to drive the rotating shaft to rotate so that the water distribution component rotates to the target state position.

[0100] In one embodiment, the reset judgment module 503 is further configured to determine whether a position signal output from the position detection component is received again if the rotation time is greater than a preset duration.

[0101] If so, the water distribution component will complete its reset.

[0102] In one embodiment, the reset judgment module 503 is further configured to continue to acquire the next rotation time if the rotation time is less than or equal to a preset duration, until the acquired rotation time is greater than the preset duration.

[0103] In one embodiment, the reset control module 501 is further configured to, after the dishwasher is powered on, in response to a power failure event that occurs during the period when the water distribution component switches to the target state position, obtain the power failure duration of the dishwasher.

[0104] If the power outage duration is less than or equal to the power outage threshold, a reset command is output.

[0105] In one embodiment, a third contact, a second contact, and a first contact are sequentially spaced apart along the rotation direction of the rotating shaft. The third contact, the second contact, and the first contact are used to trigger the position detection component so that the position detection component outputs a corresponding position signal. Along the rotation direction, the travel distance from the first contact to the third contact is greater than the travel distance from the third contact to the first contact.

[0106] In one embodiment, the third contact corresponds to the third state position of the water distribution component. When in the third state position, the upper spray arm and top spray arm of the dishwasher are working, while the lower spray arm of the dishwasher is not working.

[0107] The second contact point corresponds to the second state position of the water distribution component. When in the second state position, the lower spray arm, upper spray arm, and top spray arm of the dishwasher are working. The second state position is the reset point of the water distribution component.

[0108] The first contact point corresponds to the first state position of the water distribution component. When in the first state position, the lower spray arm and the top spray arm of the dishwasher are working, while the upper spray arm of the dishwasher is not working.

[0109] In one embodiment, the preset duration is the time required for the shaft to complete the rotation amount; the rotation amount is one-third of the circumference of the shaft.

[0110] Each module in the aforementioned water distribution valve reset device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the main control board of the dishwasher in hardware form or independent of it, or stored in the dishwasher's memory in software form, so that the main control board can call and execute the corresponding operations of each module.

[0111] In one embodiment, a dishwasher is provided. The dishwasher includes a main control board and a water distribution valve connected to the main control board;

[0112] The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the rotating shaft to rotate, thereby rotating the water distribution component connected to the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component for connecting to the dishwasher's main control board. The position detection component is used to obtain the status position of the water distribution component by detecting the rotation position of the rotating shaft, and outputs a corresponding position signal to the main control board. The main control board is used to execute the above-mentioned water distribution valve reset method.

[0113] The water-distributing component can refer to a component used for distributing water, such as a water-distributing plate. In this embodiment, the water-distributing component is described as a water-distributing plate. The position detection component can refer to a component used for detecting the state position of the rotating shaft (the state position of the water-distributing plate), such as a micro switch.

[0114] Specifically, the main control board is connected to the drive motor, the rotating shaft, and the water distribution component. The main control board outputs a reset command to instruct the drive motor to rotate the rotating shaft and drive the water distribution component connected to the rotating shaft to rotate, thereby achieving water circuit switching. The position detection component is used to obtain the status position of the water distribution component by detecting the rotation position of the rotating shaft, and outputs the corresponding position signal (two consecutive position signals) to the main control board. The main control board obtains the rotation time based on the two consecutive position signals, compares the rotation time with the preset duration, and thereby realizes the reset of the water distribution valve. When the water distribution component has completed the reset, it outputs a recovery command to instruct the drive motor to drive the rotating shaft to rotate, so that the water distribution component rotates to the target status position.

[0115] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the above-described method for resetting the water distribution valve.

[0116] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0117] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for resetting a water distribution valve, characterized in that, The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the water distribution component to rotate via the rotating shaft to achieve water path switching. The water distribution valve also includes a position detection component, which is used to obtain the state position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The method includes: In response to a power failure event that occurs during the switching of the water distribution component to the target state position, a reset command is output to the drive motor; the reset command is used to instruct the drive motor to drive the rotating shaft to rotate in order to initiate a reset. In response to receiving two consecutive position signals sequentially output by the position detection component, the rotation time is determined based on the two consecutive position signals; wherein, the two consecutive position signals include a first position signal and a second position signal, and the rotation time is the time interval between receiving the first position signal and receiving the second position signal; The water-distributing component is determined based on the rotation time to see if it has completed its reset. When the water distribution component completes its reset, a recovery command is output. The recovery command instructs the drive motor to drive the rotating shaft to rotate, so that the water distribution component rotates to the target state position. The step of determining whether the water-dividing component has completed its reset based on the rotation time includes: If the rotation time is greater than a preset duration, determine whether a position signal is received again from the position detection component; If so, the water distribution component has completed its reset. If the rotation time is less than or equal to the preset duration, continue to obtain the next rotation time until the obtained rotation time is greater than the preset duration; The circumference of the rotating shaft is provided with a third contact, a second contact, and a first contact at intervals along the rotation direction of the rotating shaft. The third contact, the second contact, and the first contact are used to trigger the position detection component so that the position detection component outputs a corresponding position signal. Along the rotation direction, the travel distance from the first contact to the third contact is greater than the travel distance from the third contact to the first contact. The preset duration is the time required for the shaft to complete the rotation amount; the rotation amount is one-third of the circumference of the shaft.

2. The method according to claim 1, characterized in that, The response to a power outage event occurring during the switching of the water distribution component to the target state position, including outputting a reset command to the drive motor, includes: After the dishwasher is powered on, in response to a power outage event that occurs during the period when the water distribution component switches to the target state position, the duration of the power outage of the dishwasher is obtained. If the power outage duration is less than or equal to the power outage threshold, the reset command is output.

3. The method according to claim 1, characterized in that, The third contact point corresponds to the third state position of the water distribution component. When it is in the third state position, the upper spray arm and top spray arm of the dishwasher are working, and the lower spray arm of the dishwasher is not working. The second contact point corresponds to the second state position of the water distribution component. When it is in the second state position, the lower spray arm, upper spray arm, and top spray arm of the dishwasher are working. The second state position is the reset point of the water distribution component. The first contact point corresponds to the first state position of the water distribution component. When it is in the first state position, the lower spray arm and the top spray arm of the dishwasher are working, while the upper spray arm of the dishwasher is not working.

4. A reset device for a water distribution valve, characterized in that, The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the water distribution component to rotate via the rotating shaft to achieve water path switching. The water distribution valve also includes a position detection component, which is used to obtain the state position of the water distribution component by detecting the rotation position of the rotating shaft, and output a corresponding position signal. The device includes: A reset control module is used to respond to a power failure event that occurs during the rotation of the water distribution component to the target state position, and output a reset command to the drive motor; the reset command is used to instruct the drive motor to drive the rotating shaft to rotate; The time acquisition module is used to determine the rotation time based on the two consecutive position signals output sequentially by the position detection component in response to receiving the two consecutive position signals; wherein the two consecutive position signals include a first position signal and a second position signal, and the rotation time is the time interval between receiving the first position signal and receiving the second position signal; A reset judgment module is used to determine whether the water-dividing component has completed reset based on the rotation time. The recovery control module is used to output a recovery command when the water distribution component has completed the reset. The recovery command is used to instruct the drive motor to drive the rotating shaft to rotate so that the water distribution component rotates to the target state position. The reset judgment module is further configured to determine whether a position signal is received again from the position detection component when the rotation time is greater than a preset duration; if so, the water-dividing component completes the reset. The reset judgment module is further configured to continue to acquire the next rotation time if the rotation time is less than or equal to the preset duration, until the acquired rotation time is greater than the preset duration; The circumference of the rotating shaft is provided with a third contact, a second contact, and a first contact at intervals along the rotation direction of the rotating shaft. The third contact, the second contact, and the first contact are used to trigger the position detection component so that the position detection component outputs a corresponding position signal. Along the rotation direction, the travel distance from the first contact to the third contact is greater than the travel distance from the third contact to the first contact. The preset duration is the time required for the shaft to complete the rotation amount; the rotation amount is one-third of the circumference of the shaft.

5. A dishwasher, characterized in that, Includes a main control board and a water distribution valve connected to the main control board; The water distribution valve includes a drive motor, a rotating shaft, and a water distribution component connected in sequence. The drive motor drives the rotating shaft to rotate, thereby rotating the water distribution component connected to the rotating shaft to achieve water circuit switching. The water distribution valve also includes a position detection component for connecting to the dishwasher main control board. The position detection component is used to obtain the status position of the water distribution component by detecting the rotation position of the rotating shaft, and outputs a corresponding position signal to the main control board. The main control board is used to execute the method according to any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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