Washing machine dehydration control method and device, washing machine and storage medium

Abstract

The embodiment of the invention discloses a washing machine dewatering control method and device, a washing machine and a storage medium, and the method comprises the steps: in the process of executing a dewatering function, increasing the rotating speed of an inner cylinder of the washing machine to a first preset rotating speed, and controlling the inner cylinder to drain water; after continuously operating at the first preset rotating speed for a first preset duration, determining whether the washing machine finishes draining; after determining that the washing machine finishes drainage, controlling the rotating speed of the inner drum to be reduced to a second preset rotating speed, and injecting water into the inner drum; after the water level of the inner cylinder reaches the preset water level, the rotating speed of the inner cylinder is increased to a third preset rotating speed, and the water level fluctuation amplitude of the preset water level is obtained; if the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold value, high-speed dehydration operation is executed. Eccentric weight increase caused by incomplete drainage is effectively avoided, the risks of vibration and barrel collision in the dewatering process are greatly reduced, the working reliability of the washing machine is improved, and the service life of the washing machine is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laundry machine dehydration technology, and in particular to a laundry machine dehydration control method, a laundry machine dehydration control device, a laundry machine and a computer readable storage medium. BACKGROUND

[0002] In the existing laundry machine technology, especially in the dehydration process of the drum laundry machine, there is a problem that the low-speed eccentricity error caused by the diagonal eccentricity cannot be identified. The unbalanced distribution of clothes in the diagonal direction of the drum can present a false balanced state at low speed, causing the system to misjudge that the load is uniform, and then allowing to enter high-speed dehydration. Once entering high-speed rotation dehydration, the real eccentricity will cause severe vibration. In addition, the fixed time-dependent drainage process is prone to incomplete drainage or misjudgment of completion.

[0003] In the case of incomplete drainage or excessive vibration, it is still running, which is easy to cause barrel collision, displacement and other faults, affecting the stability and service life of the laundry machine. SUMMARY

[0004] In view of the above problems, the present application is proposed to provide a laundry machine dehydration control method, a laundry machine dehydration control device, a laundry machine and a computer readable storage medium which overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above problems, the first aspect of the embodiments of the present application provides a laundry machine dehydration control method, which comprises: During the execution of the dehydration function, the rotational speed of the inner drum of the laundry machine is increased to a first preset rotational speed, and the inner drum is controlled to drain water; After running at the first preset rotational speed for a first preset time, it is determined whether the laundry machine is drained; After determining that the laundry machine is drained, the rotational speed of the inner drum is reduced to a second preset rotational speed, and the inner drum is injected with water; After the water level of the inner drum reaches a preset water level, the rotational speed of the inner drum is increased to a third preset rotational speed, and the water level fluctuation amplitude of the preset water level is obtained; If the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold, a high-speed dehydration operation is performed.

[0006] Optionally, the rotational speed of the inner drum of the laundry machine is increased to a first preset rotational speed, which comprises: Obtain the current load weight in the laundry machine; Based on the current load weight, the acceleration of the inner drum is determined; According to the acceleration of the inner drum, the rotational speed of the inner drum is increased to a first preset rotational speed.

[0007] Optionally, the controlling the inner drum to drain includes: monitoring a water level or water pressure change of the inner drum during the running at the first preset rotating speed; if a fluctuation value of the water level or the water pressure is within a preset stable fluctuation range, controlling the inner drum to drain; if the fluctuation value of the water level or the water pressure is not within the preset stable fluctuation range, controlling the inner drum to continue running at the first preset rotating speed until the fluctuation value of the water level or the water pressure is within the preset stable fluctuation range.

[0008] Optionally, the determining whether the washing machine is completed with the draining after the running at the first preset rotating speed for the first preset duration includes: periodically weighing the washing machine to obtain a plurality of weighing values; determining whether the washing machine is completed with the draining according to the plurality of weighing values.

[0009] Optionally, the determining whether the washing machine is completed with the draining according to the plurality of weighing values includes: when detecting that a difference between two consecutive weighing values is less than or equal to a preset first weight change threshold, determining that the washing machine is completed with the draining.

[0010] Optionally, the method further includes: when obtaining the water level fluctuation amplitude of the preset water level at the third preset rotating speed, obtaining a vibration acceleration of the inner drum; when the water level fluctuation amplitude exceeds the fluctuation amplitude threshold and / or the vibration acceleration exceeds an acceleration threshold, performing a leveling intervention operation; the leveling intervention operation includes controlling the washing machine to stop running and issuing a prompt information to guide a user to redistribute a load or adjust a position of the washing machine.

[0011] Optionally, before performing the high-speed dehydration operation, the method further includes: weighing a load in the washing machine to obtain a pre-dehydration load weight; determining a difference between the pre-dehydration load weight and a last weighing value in a plurality of weighing values obtained by periodically weighing the washing machine; determining whether the inner drum performs the high-speed dehydration operation according to the difference.

[0012] Optionally, the determining whether the inner drum performs the high-speed dehydration operation according to the difference includes: if the difference does not exceed a second weight change threshold, performing the high-speed dehydration operation; If the difference exceeds the second weight change threshold, return to the operation of increasing the rotation speed of the inner drum to the first preset rotation speed.

[0013] Optionally, the fluctuation amplitude threshold is determined based on a current load weight in the washing machine and / or the third preset rotation speed.

[0014] According to a second aspect of the embodiments of the present application, a washing machine dehydration control device is provided, the device comprising: an inner drum speed-up control module configured to increase the rotation speed of an inner drum of the washing machine to a first preset rotation speed during execution of a dehydration function, and control the inner drum to drain water; an inner drum drainage determination module configured to determine whether the washing machine is completed with water drainage after the inner drum is continuously operated at the first preset rotation speed for a first preset time length; an inner drum speed-down control module configured to decrease the rotation speed of the inner drum to a second preset rotation speed and inject water into the inner drum after it is determined that the washing machine is completed with water drainage; a water level fluctuation amplitude acquisition module configured to increase the rotation speed of the inner drum to a third preset rotation speed after the water level of the inner drum reaches a preset water level, and acquire a water level fluctuation amplitude of the preset water level; a dehydration operation execution module configured to execute a high-speed dehydration operation if the water level fluctuation amplitude does not exceed a fluctuation amplitude threshold.

[0015] Optionally, the inner drum speed-up control module comprises: a current load weight acquisition submodule configured to acquire a current load weight in the washing machine; a speed-up acceleration determination submodule configured to determine a speed-up acceleration of the inner drum based on the current load weight; an inner drum rotation speed increase submodule configured to increase the rotation speed of the inner drum to the first preset rotation speed according to the speed-up acceleration.

[0016] Optionally, the inner drum speed-up control module comprises: a water level and water pressure monitoring submodule configured to monitor a change in water level or water pressure of the inner drum during operation at the first preset rotation speed; an inner drum drainage control submodule configured to control the inner drum to drain water if a fluctuation value of the water level or the water pressure is within a preset stable fluctuation range, and control the inner drum to continue operation at the first preset rotation speed until the fluctuation value of the water level or the water pressure is within the preset stable fluctuation range if the fluctuation value of the water level or the water pressure is not within the preset stable fluctuation range.

[0017] Optionally, the inner drum drainage determination module comprises: A load weighing sub-module is configured to periodically weigh the washing machine to obtain a plurality of weighing values. A washing machine draining determination sub-module is configured to determine whether the washing machine is completed with draining according to the plurality of weighing values.

[0018] Optionally, the washing machine draining determination sub-module comprises: A draining completion determination unit is configured to determine that the washing machine is completed with draining when it is detected that a difference between two consecutive weighing values is less than or equal to a preset first weight change threshold.

[0019] Optionally, the apparatus further comprises: A vibration acceleration obtaining module is configured to obtain a vibration acceleration of the inner drum when obtaining the water level fluctuation amplitude of the preset water level at the third preset rotating speed. An intervention operation performing module is configured to perform a leveling intervention operation when the water level fluctuation amplitude exceeds the fluctuation amplitude threshold and / or the vibration acceleration exceeds an acceleration threshold; the leveling intervention operation comprises stopping the operation of the washing machine and issuing a prompt information to guide the user to redistribute the load or adjust the position of the washing machine.

[0020] Optionally, before performing the high-speed dehydration operation, the apparatus further comprises: A pre-dehydration load weighing module is configured to weigh the load in the washing machine to obtain a pre-dehydration load weight. A weighing value difference determining module is configured to determine a difference between the pre-dehydration load weight and a last weighing value in the plurality of weighing values obtained by periodically weighing the washing machine. A dehydration performing determining module is configured to determine whether the inner drum performs the high-speed dehydration operation according to the difference.

[0021] Optionally, the dehydration performing determining module comprises: A dehydration operation determining sub-module is configured to perform the high-speed dehydration operation if the difference does not exceed a second weight change threshold; and return to the operation of increasing the rotating speed of the inner drum to the first preset rotating speed if the difference exceeds the second weight change threshold.

[0022] Optionally, the fluctuation amplitude threshold is determined based on the current load weight in the washing machine and / or the third preset rotating speed.

[0023] According to a third aspect of the embodiments of the present application, a washing machine is provided, comprising a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to implement the steps of the washing machine dehydration control method according to any one of the above aspects.

[0024] According to a fourth aspect of the embodiments of the present application, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to implement the steps of the laundry machine dehydration control method according to any one of the above.

[0025] The technical solutions provided by the embodiments of the present application can include the following beneficial effects: The embodiments of the present application disclose a laundry machine dehydration control method, device, laundry machine and storage medium, and the method comprises the following steps: during execution of a dehydration function, the rotational speed of an inner drum of the laundry machine is raised to a first preset rotational speed, and the inner drum is controlled to drain water; after the inner drum is continuously operated at the first preset rotational speed for a first preset time length, it is determined whether the laundry machine has completed water draining; after it is determined that the laundry machine has completed water draining, the rotational speed of the inner drum is reduced to a second preset rotational speed, and the inner drum is filled with water; after the water level of the inner drum reaches a preset water level, the rotational speed of the inner drum is raised to a third preset rotational speed, and the water level fluctuation amplitude of the preset water level is obtained; and if the water level fluctuation amplitude does not exceed a fluctuation amplitude threshold, a high-speed dehydration operation is performed. By continuously operating the inner drum at the first preset rotational speed for the first preset time length, the load of the inner drum is redistributed under the action of centrifugal force, and vibration caused by directly raising the speed due to misjudgment of balance is avoided. The water draining state is dynamically monitored during continuous operation, and the eccentricity is effectively prevented from being aggravated due to incomplete water draining. The series of steps of reducing the rotational speed, filling the inner drum with water to the preset water level, raising the rotational speed to the third preset rotational speed and detecting the water level fluctuation can deduce the real-time stability state of the entire load distribution, so that the high-speed dehydration stage can be started in the optimal balanced state, the vibration and the risk of the inner drum being hit during the dehydration process are greatly reduced, and the reliability and the service life of the laundry machine are improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a step flow chart of a laundry machine dehydration control method provided by the embodiments of the present application; Figure 2 is a step flow chart of another laundry machine dehydration control method provided by the embodiments of the present application; Figure 3 is a flow diagram of laundry machine dehydration of a laundry machine dehydration control method provided by the embodiments of the present application; Figure 4 is a structural block diagram of a laundry machine dehydration control device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] The traditional method continues to run in the case of incomplete drainage or excessive vibration, which is easy to cause faults such as barrel collision and displacement, and affects the stability and service life of the washing machine.

[0029] One of the core ideas of the embodiment of the present application is that by continuously running at the first preset speed for the first preset time length, the drainage state is dynamically monitored during the continuous running, which effectively avoids the aggravation of eccentricity caused by incomplete drainage. The series of steps of reducing the speed, water injection to the preset water level, and then lifting to the third preset speed for water level fluctuation detection, thereby ensuring that the high-speed dehydration stage can be started in the optimal balance state, greatly reducing the vibration and barrel collision risk in the dehydration process.

[0030] Reference Figure 1 A step flow chart of a washing machine dehydration control method provided by the embodiment of the present application is shown, and the method specifically comprises the following steps: Step 101, in the process of executing the dehydration function, the speed of the inner drum of the washing machine is raised to a first preset speed, and the inner drum is controlled to drain water; In the existing washing machine technology, especially in the dehydration process of the drum washing machine, there is a problem that the low-speed eccentricity error caused by the diagonal eccentricity cannot be identified. This error is in a balanced state at low speed, and it is difficult to judge whether the clothes distribution is truly uniform, thereby affecting the vibration control in the subsequent high-speed dehydration process. The method continues to run in the case of excessive vibration, which is easy to cause faults such as barrel collision and displacement, and affects the stability and service life of the washing machine.

[0031] The embodiment of the present application solves the technical problems that the diagonal eccentricity cannot be identified at low speed in the dehydration process of the washing machine, the drainage control is inaccurate, the vibration monitoring is not timely, and the water level control is unreasonable, which easily causes the problems such as barrel collision and displacement.

[0032] The washing machine is a modern household electrical appliance integrating machinery, electronics and automatic control, and its main function is to efficiently clean clothes, bedclothes and other fabrics through programmed washing, rinsing and dehydration processes. The core structure usually includes an outer box body supporting and protecting internal components; the washing / dehydration barrel is usually a double structure of an outer barrel (water containing barrel) and an inner drum (dehydration barrel with holes).

[0033] The inner drum, also known as the dehydration barrel or washing barrel, is a metal drum with holes that directly contains clothes and rotates with them in the washing machine. It is a key executive component for generating and realizing washing mechanical force. Uneven distribution of clothes (such as heavy on one side) will cause the center of mass of the inner drum to deviate from the rotation center. During dehydration, the water in the clothes is thrown out through the small holes on the inner drum wall by centrifugal force and enters the outer barrel to be discharged.

[0034] The first preset rotating speed refers to a key target rotating speed value at which the inner tub is lifted and maintained during an initial stage of the execution of the dehydration function of the washing machine, for the purpose of exposing the eccentric state and determining the completion of drainage. The core feature is that the first preset rotating speed is lower than the resonance rotating speed of the washing machine, but significantly higher than the rotating speed for low-speed weighing or shaking.

[0035] The rotating speed is raised to the first preset rotating speed (for example, 800 rpm), at which the centrifugal force generated is large enough to pull the inner tub with any unbalanced load to a displacement from the rotation center, so that the weighing sensor, water level / pressure sensor or acceleration sensor can clearly and reliably detect the unbalanced state. The continuous operation at the first preset rotating speed ensures that most of the water in the laundry can be continuously and effectively drained out by the centrifugal force at this rotating speed.

[0036] In the embodiment of the present application, the first preset rotating speed is strictly lower than the resonance rotating speed of the whole machine, while achieving the two key technical purposes of eccentric pre-exposure and dynamic drainage by a continuous, stable and high enough centrifugal force field under the premise of absolute safety.

[0037] The laundry may present a false balance at a low speed, especially a diagonal eccentricity that is difficult to detect. By raising to and maintaining the first preset rotating speed (for example, 800 rpm for at least 3 minutes), sufficient centrifugal force forces the real unbalanced state of the load to act on the inner tub, so that the eccentric displacement is amplified and can be reliably captured by the water level / pressure or vibration sensor, solving the fundamental defect of the traditional method of misjudging the balance at a low speed. The traditional timed drainage cannot adapt to the drainage characteristics of different loads, and the steps of the embodiment couple the drainage with the periodic weighing at the first preset rotating speed. Continuous weighing before and after the speed-up and during the stable operation, when it is detected that the continuous weighing values tend to be equal, it is determined that the water that can be drained out at the current centrifugal force level has been completely drained out. This dynamic criterion based on the tendency of mass change to zero fundamentally avoids the risk of subsequent vibration caused by incomplete drainage (residual water aggravating eccentricity) or premature end of drainage, and lays a precise initial condition for the stability of the whole dehydration process.

[0038] Step 102, after continuously operating at the first preset rotating speed for a first preset time length, determining whether the washing machine is drained. In the embodiment of the present application, the first preset time length is used as an observation window to evaluate and confirm the result of the centrifugal drainage process. After experiencing a drainage cycle based on a high centrifugal force field, the sensor data needs to be comprehensively judged for convergence to determine whether the conditions for entering the next stage are met.

[0039] The core criterion for determining whether the draining is completed is based on periodic weighing data analysis. During the whole process of maintaining the rotation speed at the first preset rotation speed, the total mass data of the load is obtained at a fixed or adaptive period. When the system detects that the difference between the continuously obtained weighing values tends to zero or is less than a preset minimum threshold, it is determined that the draining is completed. Under the centrifugal force generated by the current rotation speed, the water in the clothes that can be effectively removed has reached a dynamic balance, and continuing to maintain this rotation speed cannot remove more water. This dynamic determination method based on the change rate of mass tending to zero completely eliminates the traditional extensive control relying on fixed time length, and realizes the accurate identification of the end of draining.

[0040] Step 103, after determining that the draining of the washing machine is completed, the rotation speed of the inner drum is reduced to a second preset rotation speed, and water is injected into the inner drum; The second preset rotation speed is a transition rotation speed, and its set value is significantly lower than that of the first preset rotation speed, usually in the range of 0-200 revolutions per minute.

[0041] After being reduced to the second preset rotation speed, the system controls water injection, and accurately maintains the water level at a specific position higher than the bottom of the barrel and lower than the heating pipe. The second preset rotation speed hardly generates an influential centrifugal force, avoiding the water being splashed out. Injecting water into the inner drum creates a "buffer layer" or "isolation layer", which can effectively block the condensate water generated by the temperature difference between the inner and outer drums and the residual water splashed due to shaking, so that it cannot fall back onto the clothes in the inner drum, thereby fundamentally eliminating the risk of the clothes being wetted again during the dehydration stage, and directly improving the dryness and washing quality of the final clothes.

[0042] In the embodiment of the application, the rotation speed is significantly reduced from the first preset rotation speed to the second preset rotation speed which is extremely low. The reduction in speed actively removes the strong centrifugal field used for draining and eccentricity detection before, so that the load in the washing machine returns from a relatively high energy state to a nearly static state with extremely low interference.

[0043] Water is injected into the inner drum rotating at a static or low speed until a preset and accurately controlled water level (higher than the bottom of the barrel and lower than the heating pipe) is reached. This part of water acts as an isolation layer to prevent condensate water and splashed water from wetting the clothes again, directly improving the dehydration quality. Together with the inner drum, it forms an extremely sensitive "inertial liquid mass" in nature. Any slight movement of the inner drum caused by potential eccentricity or imbalance will be amplified as significant water surface fluctuations due to the inertia of water, thereby converting mechanical vibration signals into liquid level signals that are easier to capture by the water level sensor, and realizing the monitoring of system stability.

[0044] Step 104, after the water level of the inner drum reaches the preset water level, the rotation speed of the inner drum is increased to a third preset rotation speed, and the water level fluctuation amplitude of the preset water level is obtained; The third preset rotating speed is the final check rotating speed of the whole dehydration preparation process. It is usually set to a value lower than or equal to the first preset rotating speed, for example, 600 rpm. The increase of the rotating speed from the extremely low second preset rotating speed to the medium-high third preset rotating speed is equivalent to exerting a significant centrifugal force without losing control. This force field is sufficient to stimulate and amplify the tiny eccentricity of the residual load and any soft defects (such as damping aging, uneven installation) that may exist in the washing machine suspension system.

[0045] The water level fluctuation amplitude is the core criterion for system stability, and is not simply the change in water level, but refers to the peak value (difference between maximum and minimum values) of the periodic or non-periodic oscillation of the water surface at the preset water level in the inner drum under the third preset rotating speed, which is caused by the vibration or eccentric motion of the inner drum. When the inner drum produces slight vibration due to residual eccentricity or unstable suspension, the water with inertia and fluidity will amplify and convert the slight mechanical vibration of the inner drum into significant water surface fluctuation that can be easily observed by the naked eye or sensors.

[0046] In the embodiments of the present application, the core purpose is to actively stimulate and quantify the dynamic unbalanced state of the system at a safe and controllable rotating speed, so as to make the final judgment on whether it is safe to enter the final high-speed dehydration. The premise is that the inner drum has been filled and stabilized at the preset water level. The rotating speed is increased from the second preset rotating speed at rest or extremely low speed to the third preset rotating speed. The third preset rotating speed is a medium rotating speed significantly higher than daily shaking but lower than the dangerous resonance zone. During the stable operation at the third preset rotating speed, the fluctuation amplitude of the preset water level is continuously monitored in real time.

[0047] In step 105, if the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold, a high-speed dehydration operation is performed.

[0048] In the embodiments of the present application, the water level fluctuation amplitude obtained and quantified in real time is compared with the preset fluctuation amplitude threshold. This threshold is intelligently adjusted according to the current load weight and the third preset rotating speed, ensuring that the judgment standard is strict and reasonable, and can adapt to different working conditions.

[0049] If the threshold is not exceeded, it proves that the inner drum, load, suspension and water as a sensor remain stable operation at the third preset rotating speed. It is inferred that the system can still remain stable operation at a higher target dehydration rotating speed. Therefore, the final high-speed dehydration operation is triggered, and the rotating speed of the inner drum is increased to the preset highest dehydration rotating speed to complete the efficient dehydration task. If the threshold is exceeded, it indicates that the system has shown a tendency to lose stability in the test, and its operation has exceeded the safety boundary. The request to enter the high-speed dehydration will be immediately rejected, and the protection mechanism (such as stopping, alarming, prompting the user to redistribute the clothes or adjust the position of the washing machine) will be triggered, so as to completely intercept the risk of collision, displacement and other failures before they occur.

[0050] Referring to Figure 2 , a step flow chart of another laundry machine dehydration control method provided by an embodiment of the present application is shown, and the method specifically includes the following steps: Step 201, during the execution of the dehydration function, the rotation speed of the inner drum of the laundry machine is raised to a first preset rotation speed, and the inner drum is controlled to drain water; Before starting the eccentricity detection, the laundry machine first raises the inner drum to a first preset rotation speed (for example, 800 rpm) lower than the resonance rotation speed, and continues to run at this rotation speed for a period of time. During this process, the system continuously monitors the change of the water level frequency (water level height), until the water level frequency tends to be stable and no longer changes, indicating that the eccentricity state has appeared at this time. Tending to be stable means that there is basically no change, or the fluctuation value is stable, without large fluctuations.

[0051] In addition, the water pressure change data of the inner drum is obtained in real time through the pressure sensor to replace the traditional water level frequency detection method, to determine whether the water level is stable. Compared with the traditional water level sensor, the pressure sensor has faster response and higher precision, improving the reliability and real-time performance of the detection.

[0052] In the embodiment of the present application, under the premise of ensuring absolute safety, the two key technical purposes of eccentricity pre-exposure and dynamic drainage are achieved at the same time through a continuous, stable and high enough centrifugal force field, and the first preset rotation speed is strictly lower than the resonance rotation speed of the whole machine.

[0053] The clothes may present a false balance at low speed, especially the diagonal eccentricity which is difficult to detect. By raising to the first preset rotation speed and maintaining running (for example, 800 rpm, for at least 3 minutes), the sufficient centrifugal force forces the real unbalance state of the load to fully act on the inner drum, so that the eccentric displacement is amplified, and thus can be reliably captured by the water level / pressure or vibration sensor, solving the fundamental defect of the traditional method that misjudges the balance at low speed. The traditional timed drainage cannot adapt to the drainage characteristics of different loads, and the step of the present embodiment couples the drainage with the periodic weighing depth at the first preset rotation speed. Continuous weighing is performed before and after the speed-up and during the stable running, and when it is detected that the continuous weighing values tend to be equal, it is determined that the water that can be drained at the current centrifugal force level has been completely drained. This dynamic criterion based on the tendency of the mass change to zero fundamentally avoids the risk of subsequent vibration caused by incomplete drainage (residual water aggravating the eccentricity) or premature end of the drainage, laying a precise initial condition for the stability of the entire dehydration process.

[0054] In some embodiments, the step 201 can include the following sub-steps: Sub-step S11, obtaining the current load weight in the laundry machine; Sub-step S12, determining the speed-up acceleration of the inner drum based on the current load weight; In sub-step S13, the rotating speed of the inner drum is raised to a first preset rotating speed according to the speed-up acceleration.

[0055] In the speed-up phase, the speed-up curve is dynamically adjusted according to the load weight fed back by the weighing sensor. For example, when a light load is detected, a fast speed-up strategy is adopted to improve efficiency; when a heavy load is detected, a gentle speed-up strategy is adopted to avoid mechanical impact caused by sudden acceleration, thereby improving operation stability. For example, according to load division, less than 3 kg belongs to light load, 4-5 kg belongs to standard load, and more than 5 kg belongs to heavy load. When the load is light, the fast speed-up has little effect; when the load is heavy, the gentle speed-up is adopted, and the effect on the whole machine is little when the resonance point is not reached.

[0056] In the embodiment of the present application, the load weight perception and adaptive control are introduced to form a dynamic speed-up strategy based on load. The current load weight in the washing machine is obtained, and the accurate mass of the load is obtained by the weighing sensor at the beginning of the dehydration program. The load is converted into a quantifiable key parameter, which provides a basis for subsequent personalized control.

[0057] Based on the current load weight, the speed-up acceleration of the inner drum is determined, and an optimal speed-up acceleration is calculated or selected according to the current load weight through a preset rule or mapping relationship. A large speed-up acceleration is adopted for light load (such as M≤3 kg). Because the inertia of light load is small, the risk of impact vibration caused by fast speed-up is low, the detection period can be shortened, and the overall dehydration efficiency can be improved. A small speed-up acceleration is adopted for heavy load (such as M>5 kg). Because the inertia of heavy load is large, sudden acceleration can easily produce a large inertial torque, which can cause impact on the motor, belt and suspension system, and can trigger uncontrollable vibration in advance. Gentle acceleration can ensure a smooth speed-up process and protect the mechanical structure. A moderate speed-up acceleration is adopted for standard load (such as 3 kg<M≤5 kg), which balances between efficiency and protection. The uniform speed-up curve is changed into a dynamic curve that matches the load characteristics.

[0058] According to the speed-up acceleration, the rotating speed of the inner drum is raised to a first preset rotating speed. According to the determined acceleration, the motor is controlled to smoothly raise the rotating speed of the inner drum to the target value of the first preset rotating speed. No matter how heavy the load is, the rotating speed of the inner drum of the washing machine can be safely and efficiently raised to the first preset rotating speed in the most appropriate way.

[0059] The intelligent feedback in the speed-up process solves the potential problems caused by ignoring the load inertia difference in the traditional method: fast acceleration for light load to reduce waiting time; stable acceleration for heavy load to reduce noise and shaking. The stress impact on mechanical parts (especially the driving system and suspension) is avoided, and the service life is prolonged. The accurate exposure of the eccentric state caused by the additional disturbance introduced by the speed-up process itself is avoided, and the subsequent detection result is more reliable.

[0060] In some embodiments, the step 201 can further include the following sub-steps: Sub-step S21, monitoring the water level or water pressure change of the inner drum during the operation at the first preset rotating speed; Sub-step S22, if the fluctuation value of the water level or the water pressure is within the preset stable fluctuation range, controlling the inner drum to drain water; Sub-step S23, if the fluctuation value of the water level or the water pressure is not within the preset stable fluctuation range, controlling the inner drum to continue operating at the first preset rotating speed until the fluctuation value of the water level or the water pressure is within the preset stable fluctuation range.

[0061] In the embodiments of the present application, the change of the first physical quantity related to the water level of the inner drum is continuously monitored during the operation at the first preset rotating speed; the first physical quantity is the water level height measured by the liquid level sensor or the water pressure of the inner drum measured by the pressure sensor. An indirect representation signal reflecting the eccentric state of the load is obtained in real time. When the inner drum shakes due to eccentricity, it will cause the water level in the drum to fluctuate sharply or the water pressure to change periodically.

[0062] It is judged whether the fluctuation value of the water level or the water pressure is maintained within the preset stable fluctuation range in the continuous monitoring time; if yes, it is determined that the eccentric state of the load has been stabilized, and the inner drum is triggered to perform the water draining operation. Only when the fluctuation of the water level / water pressure becomes smooth and regular (the fluctuation value is within the preset range), it means that the clothes in the inner drum have reached a dynamic balance distribution under the centrifugal force of the first preset rotating speed, the eccentric state has been fully exposed and no longer changes sharply. At this time, the water draining is started, which can ensure that the amount of drained water is stable, and the subsequent weighing to determine the completion of the water draining is also more reliable.

[0063] If the fluctuation value of the water level or the water pressure is not within the preset stable fluctuation range, the inner drum is controlled to continue operating at the first preset rotating speed until the stable condition is met, or an abnormal processing procedure is performed after a maximum continuous operating time is reached. If the fluctuation cannot be stabilized after a long time of operation, it indicates that the load can be in a special state that cannot be automatically balanced (such as a single thick and heavy article closely adhering to the drum wall).

[0064] At this time, the inner cylinder continues to run at the first preset rotating speed until the water level or the fluctuation value of the water pressure is within the preset stable fluctuation range. Based on the accurate judgment of whether the physical signal (water level / water pressure fluctuation) meets the stable standard, state-based feedback control is realized instead of pure time control. Only the load that meets the state can enter the next step (drainage and drainage completion judgment). Blind drainage is prevented when the load is still in a state of severe shaking and eccentricity, which leads to mechanical vibration interference in the drainage process itself and uneven efficiency. The subsequent weighing reading jumps greatly due to vibration, and it is impossible to accurately determine whether the drainage is completed.

[0065] Step 202, after continuously running at the first preset rotating speed for a first preset time length, determining whether the washing machine is drained. In the embodiment of the present application, the first preset time length is used as an observation window to evaluate and confirm the result of the centrifugal drainage process. After experiencing a drainage cycle based on a high centrifugal force field, sensor data needs to be comprehensively judged for convergence to determine whether the conditions for entering the next stage are met.

[0066] The core criterion for determining whether the drainage is completed is based on periodic weighing data analysis. During the entire process of maintaining the rotating speed at the first preset rotating speed, the total mass data of the load is obtained at a fixed or adaptive period. When the system detects that the difference between the continuously obtained weighing values tends to zero or is less than a preset minimum threshold, it is determined that the drainage is completed. Under the action of the centrifugal force generated at the current rotating speed, the water in the clothes that can be effectively removed has reached a dynamic balance, and it is impossible to remove more water by continuing to maintain this rotating speed. This dynamic determination method based on the change rate of mass tending to zero completely eliminates the traditional extensive control relying on fixed time length, and realizes the accurate identification of the end of drainage.

[0067] In some embodiments, the step 202 can include the following sub-steps: Sub-step S31, periodically weighing the washing machine to obtain a plurality of weighing values; Sub-step S32, determining whether the washing machine is drained according to the plurality of weighing values.

[0068] When the water level frequency stabilizes, the washing machine starts to reduce the speed to a second preset rotating speed and performs weighing detection at the rotating speed to obtain the current load. The time length under different load conditions is controlled by controlling the time of water level frequency stabilization, so as to control the dehydration time. According to the weighing result, the system automatically adjusts the drainage time, so that the water level gradually decreases but remains within a reasonable range during the operation of the drainage pump, so as to facilitate subsequent detection and use.

[0069] The long water level frequency stabilization time indicates that the load in the whole machine is large, and water will drip from the load to the inner and outer drums during the draining process, resulting in a long draining time and a long water level frequency stabilization time, which has an impact on the draining time in the case of a large load.

[0070] In the embodiment of the present application, the weighing values of the washing machine are obtained at fixed or variable periods during and after the operation at the first preset rotating speed, to obtain a time sequence of weighing values b1, b2, b3, …, bn. These weighing values are instantaneous reflections of the total mass of the inner drum, the load and the water contained therein. The periodic weighing of the washing machine can be at equal time intervals, or the sampling frequency can be adaptively adjusted according to the data change rate. The decrease of each weighing value directly reflects the mass of water discharged outside the machine at that moment due to the centrifugal force. Therefore, this sequence essentially describes the “change rate of the draining mass with time (or with the sampling period)”.

[0071] The weighing value sequence is analyzed to determine whether it satisfies a convergence condition representing that the draining tends to end; if it does, it is determined that the washing machine has completed draining. The absolute difference Δb = |b n -b n-1 | between two consecutive weighing values is calculated. Δb is compared with a preset weight change threshold ε. If Δb ≤ ε, it is considered that, under the current measurement accuracy and system state, the mass of the load has substantially changed. Under the current rotating speed, no water can be effectively drained in unit time, and the draining process has reached a dynamic balance, at which point it is determined that the draining is completed.

[0072] The threshold ε can be a fixed small value, or a variable dynamically adjusted according to the load weight M (for example, the heavier the load, the larger the absolute amount of residual water allowed, and the threshold ε can be adjusted accordingly), so that the judgment is more adaptive and reasonable.

[0073] All subsequent problems caused by a fixed draining time that is too short (resulting in incomplete draining and increased residual water eccentricity) or too long (resulting in low efficiency) are fundamentally eliminated. The completion of draining is a convergent state based on physical facts (unchanging mass), which ensures that the moisture content of the load has reached the lowest level that can be achieved under the current centrifugal force when entering the next link, laying an optimal foundation for stability.

[0074] In some embodiments, the step S32 can include the following sub-step: Sub-step S321, when it is detected that the difference between two consecutive weighing values is less than or equal to a preset first weight change threshold, it is determined that the washing machine has completed draining.

[0075] In the embodiment of the present application, when it is detected that the difference between two consecutive weighing values is less than or equal to a preset first weight change threshold, it is determined that the washing machine has completed draining. If |bn -b n-1 If |≤ε, then drainage is considered complete. n The latest weighing value, b n-1 The previous weighing value is given, and ε is the preset first weight change threshold. The difference approaches zero (less than the threshold ε), which means that the rate of change of the weighing sequence {b1, b2, ..., bn} has converged to a negligible level, indicating that the total mass (load and residual water) in the washing machine remains almost unchanged between the two sampling intervals.

[0076] The determination is based on the assumption that, under the centrifugal force generated by the current rotation speed, the water that can be removed from the clothing by this force field has reached a dynamic equilibrium. Continuing to maintain the current rotation speed will not effectively remove more water. The judgment is based on two consecutive data points, rather than a single data jump, which effectively filters out false triggers caused by momentary shaking of the inner drum, occasional sensor noise, etc., resulting in a very stable and reliable decision. By continuously monitoring the weight and comparing the result with a set value (threshold ε), a crucial state transition decision (drainage complete) is made based on the comparison result, making the determination of whether drainage is complete more accurate.

[0077] Step 203: After confirming that the washing machine has finished draining, control the rotation speed of the inner drum to decrease to the second preset speed, and inject water into the inner drum; After drainage is complete, the washing machine stops draining and refills with water to a level higher than the bottom of the tub but lower than the heating element. This water level setting ensures that water inside the tub will not enter the inner drum due to agitation during subsequent speed-up processes, while also providing sufficient water for vibration monitoring. The water filling process is controlled by both a water level sensor and a pressure sensor to ensure that the water level is accurately controlled within the specified range.

[0078] In this embodiment of the invention, the rotation speed is significantly reduced from a relatively high first preset speed to an extremely low second preset speed. This speed reduction actively removes the strong centrifugal force field previously used for drainage and eccentricity detection, allowing the load inside the washing machine to return from a relatively high-energy state to a near-static, minimally disturbed baseline state.

[0079] Water is poured into the stationary or slowly rotating inner drum until a preset, precisely controlled water level is reached (above the bottom of the drum, below the heating element). This water acts as an insulating layer, preventing condensation and splashing water from re-wetting the clothes, directly improving the spin-drying quality. Together with the inner drum, it forms an inherently highly sensitive "inertial liquid mass." Any minute movement of the inner drum caused by potential eccentricity or imbalance will be amplified into significant water surface fluctuations due to the inertia of the water. This converts the mechanical vibration signal into a liquid level signal that is more easily captured by the water level sensor, enabling the monitoring of system stability.

[0080] Step 204, after the water level of the inner tub reaches the preset water level, the rotating speed of the inner tub is increased to a third preset rotating speed, and the water level fluctuation amplitude of the preset water level is obtained. The washing machine is again accelerated to a third preset rotating speed (for example, 600 rpm) and continues to run at this rotating speed for a period of time. During this process, the system monitors the water level fluctuation in real time. If the water level fluctuation amplitude exceeds the set threshold, it indicates that the suspension system is unstable, and the washing machine will immediately stop running and prompt the user to re-level the washing machine to prevent the bucket from shifting. The threshold value in the water level fluctuation amplitude exceeding the set threshold value is related to the load weight and / or the current rotating speed.

[0081] To improve the accuracy of the suspension system state evaluation, a multi-sensor fusion technology is used, including water level sensors, acceleration sensors, and weighing sensors, to comprehensively analyze the running state of the washing machine. For example, by detecting the vibration acceleration of the inner tub through the acceleration sensor, combined with the water level fluctuation data, it is determined whether the suspension system is in an abnormal state. If the multi-sensor data comprehensively determines that there is eccentricity or instability in the suspension, the leveling mechanism is triggered, prompting the user to adjust the position of the washing machine to ensure stable operation. When the acceleration sensor requirement is not met, re-determination will be carried out to avoid misjudgment. If one of the other sensors shows an error while the other is normal, the next step will continue, and if both of the other sensors are abnormal, it is determined that there is an error, mainly based on the vibration acceleration.

[0082] In the embodiments of the present application, the core purpose is to actively stimulate and quantify the dynamic unbalanced state of the system at a safe and controllable rotating speed, so as to make a final judgment on whether it can safely enter the final high-speed dehydration. The premise is that the inner tub has been filled and stabilized at a preset water level. The rotating speed is increased from the second preset rotating speed at rest or very low speed to the third preset rotating speed. The third preset rotating speed is a medium rotating speed that is significantly higher than daily shaking but lower than the dangerous resonance zone. During the stable operation at the third preset rotating speed, the fluctuation amplitude of the preset water level is continuously monitored in real time.

[0083] Step 205, if the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold, a high-speed dehydration operation is performed.

[0084] In some embodiments, the fluctuation amplitude threshold is determined based on the current load weight in the washing machine and / or the third preset rotating speed.

[0085] If the water level fluctuation is within the allowable range, it is determined that the eccentric state is acceptable, and the washing machine enters the high-speed dehydration phase; otherwise, the system prompts the user to check and adjust the position of the washing machine to ensure stable operation. When the system prompts the user to re-level the washing machine, it mainly refers to re-leveling the load (i.e., clothes) and adjusting the position of the washing machine.

[0086] Since the inherent dynamic characteristics of the washing machine system are quite different under different load weights and different rotation speeds, a fixed threshold will inevitably lead to frequent false positives when the load is light or false negatives when the load is heavy. The embodiments of the present application dynamically associate the threshold with the current load weight and the third preset rotation speed, so that the judgment standard can be adapted to the real-time working condition. Specifically, the system can pre-set an empirical model or a calculation formula according to the load-rotation speed mapping, and real-time calculate the reasonable water level fluctuation upper limit allowed in the current state. For example, the heavier the load and the higher the rotation speed, the greater the system inertia, and the threshold of the allowed physical swing amplitude (corresponding to water level fluctuation) may be adjusted accordingly, and vice versa. This ensures that the "stable / unstable" decision of the system is based on the benchmark that matches the working condition under any load and test rotation speed, thereby improving the detection sensitivity while greatly reducing the misjudgment rate, making the final spin permission decision safe and accurate.

[0087] In the embodiments of the present application, the water level fluctuation amplitude obtained and quantified in real time is compared with the preset fluctuation amplitude threshold. This threshold is intelligently adjusted according to the current load weight and the third preset rotation speed, ensuring that the decision standard is strict and reasonable, and can adapt to different working conditions.

[0088] If the threshold is not exceeded, it proves that the inner drum, load, suspension and water as a sensor are running stably at the third preset rotation speed. It is inferred that the system can still run stably at a higher target spin speed. Therefore, the final high-speed spin operation is triggered, and the inner drum rotation speed is increased to the preset highest spin speed, to complete the efficient spin task. If the threshold is exceeded, it indicates that the system has shown instability tendency in the test and its operation has exceeded the safety boundary. The request to enter high-speed spin will be immediately rejected, and the protection mechanism (such as shutdown, alarm, prompting the user to redistribute the clothes or adjust the position of the washing machine) will be triggered, thereby completely intercepting the risk of collision, displacement and other failures before they occur.

[0089] In some embodiments, the following steps need to be performed before performing the step 205: Step S41, weighing the load in the washing machine to obtain the load weight before spin; Step S42, determining the difference between the load weight before spin and the last weighing value in the plurality of weighing values obtained by periodically weighing the washing machine; Step S43, determining whether the inner drum performs the high-speed spin operation according to the difference.

[0090] Before entering high-speed dewatering, the system will again perform a quick weighing to confirm that the load distribution has not changed significantly. If there is a significant change (such as clothes moving), the eccentricity monitoring process is re-executed to ensure the safety of the dewatering process. If the quick weighing finds that the load has changed, the eccentricity monitoring process is re-executed, and if the conditions for high-speed dewatering operation are met, the dewatering continues, if not, the eccentricity monitoring continues until the dewatering requirements are met, if it continues to not meet, when a certain time does not meet, the dewatering will be stopped.

[0091] In embodiments of the present application, before performing high-speed dewatering operation, a load state verification is performed to capture the unperceived load state changes that may occur in the previous dynamic test. The load in the washing machine is weighed to obtain the load weight before dewatering. At the critical point of entering high-speed dewatering, the latest weight of the current load is obtained. At this time, the inner drum is usually at a low speed (such as just dropped from the third preset speed or at rest) to ensure accurate weighing.

[0092] The difference between the load weight before dewatering and the last weighing value obtained by periodic weighing is determined. The mass change of the load before performing high-speed dewatering operation is quantified. The load at the time of determining that the drainage is completed at the first preset speed and the current weight after going through the subsequent "low-speed water injection, medium-speed (third preset speed) test" and other links. If there is no abnormality, the two should be basically consistent.

[0093] According to the difference, it is determined whether the inner drum performs high-speed dewatering operation. If ΔW≤δ (δ is a preset minimum weight deviation threshold), it is determined that the load state is stable and consistent, and no significant change affecting the balance has occurred (such as clothes not moving in large scale, no abnormal water increase or decrease). The system allows high-speed dewatering operation. If ΔW>δ, it is determined that the load state has changed abnormally, which may be due to the redistribution of clothes, changing the center of mass. There is unmeasured water entering (such as condensate accumulation dripping) or accidental discharge.

[0094] Connecting the dewatering before and the drainage completion, the washing machine system stable state verification is performed. If the weight difference is too large, it proves that the washing machine system stable state has been destroyed and must be stopped. Through the weight comparison, the robustness and absolute safety of the system in dealing with unpredictable interference are greatly improved.

[0095] In some embodiments, the step S43 can include the following sub-steps: Sub-step S431, if the difference does not exceed the second weight change threshold, the high-speed dewatering operation is performed; if the difference exceeds the second weight change threshold, the operation of raising the speed of the inner drum to the first preset speed is returned to.

[0096] In the embodiments of the present application, if the difference between the weight before dehydration and the weight on the drainage basis is within the allowable range of the second weight change threshold (usually a preset minimum value), the high-speed dehydration is approved to be executed, which proves that the load state remains stable and consistent after going through the entire detection process. If the difference exceeds the threshold, the safety rollback mechanism process is triggered, which is not a local adjustment, but directly returns to the starting point of the process, that is, the operation of "increasing the inner drum speed to the first preset speed". This design means that the system determines that the load state has changed unacceptably and fundamentally (such as a large displacement of clothes or accidental wetting), and all previous detection and balancing results based on the old state have been invalidated. Therefore, the system chooses to abandon all intermediate states and performs a complete reset and re-detection, thereby eliminating any risks that may be caused during high-speed dehydration due to state mutation in the most conservative and reliable way, ensuring the absoluteness of the safety strategy.

[0097] At step 206, when the water level fluctuation amplitude of the preset water level is obtained at the third preset speed, the vibration acceleration of the inner drum is obtained. At this stage, the system will also combine the weighing data and acceleration sensor feedback to comprehensively judge whether the load distribution is uniform. If it is detected that there is a large deviation in the load distribution, the user is prompted to adjust the clothes distribution or reduce the load to optimize the subsequent dehydration effect.

[0098] In the embodiments of the present application, when the water level fluctuation amplitude of the preset water level is obtained at the third preset speed, the vibration acceleration of the inner drum is obtained, which is a data parallel collection and information complementary enhancement in the multi-sensor fusion decision strategy. The core purpose of this step is to synchronously collect signals representing system stability from two different physical dimensions, providing a richer and more reliable evidence chain for the final comprehensive safety decision.

[0099] The water level fluctuation amplitude is an indirect high-sensitivity indicator reflecting the inner drum shaking from the macro liquid motion level, while the vibration acceleration is a physical quantity directly measuring the vibration of the inner drum from the structural mechanics level. Synchronously obtaining these two key parameters makes the washing machine stability judgment more accurate when both indicate stability or both indicate abnormalities. When the signals of the two parameters are contradictory (for example, the water level fluctuation is normal but the vibration is slightly large), the vibration acceleration is mainly used as the criterion, and the water level fluctuation is used for supplementary analysis, thereby effectively avoiding false positives, failures or interference of a single sensor, and significantly improving the robustness, fault tolerance and decision accuracy of the entire stability evaluation system. This marks the upgrade of the system from relying on simple judgment of a single data source to intelligent diagnosis based on multi-source information fusion.

[0100] Step 207, when the water level fluctuation amplitude exceeds the fluctuation amplitude threshold value, and / or the vibration acceleration exceeds the acceleration threshold value, a leveling intervention operation is performed; the leveling intervention operation includes controlling the washing machine to stop running, and issuing a prompt information to guide the user to redistribute the load or adjust the washing machine position.

[0101] In the embodiment of the present application, when any of the real-time monitored water level fluctuation amplitude and / or vibration acceleration exceeds the respective dynamic threshold value, the system immediately determines that the current dehydration state has a high risk. At this time, instead of passively bearing or trying to adjust internally, the system actively performs a "leveling intervention operation". This operation contains two levels: first, immediately control the washing machine to stop running, physically terminate the continuation and deterioration of the risk state; second, issue clear prompt information to the user through the human-machine interface, convert the abstract sensor data anomaly into specific and operable user guidance ("redistribute the load" or "adjust the washing machine position"), so as to call the user's intelligence to complete the physical leveling work that the machine itself cannot complete. This realizes a closed loop from machine automatic diagnosis to man-machine cooperative troubleshooting, and ensures that when the algorithm cannot internally resolve the risk, there is still a reliable external intervention path to ensure absolute safety.

[0102] Reference Figure 3 , a washing machine dehydration flowchart of a washing machine dehydration control method provided by an embodiment of the present application is shown, Figure 3 The complete process of the washing machine dehydration control method of the embodiment of the present application is shown: from the start of lifting the inner drum to the first preset rotating speed, first, whether to start draining is determined by monitoring whether the water level / water pressure fluctuation is stable; periodic weighing is performed during the draining stage, and when the difference between the two consecutive weighing values is less than or equal to the first weight change threshold value, it is determined that the draining is completed; then, the speed is reduced to the second preset rotating speed and water is injected to the preset water level, and then the speed is increased to the third preset rotating speed to perform the suspension system stability check. If the water level fluctuation amplitude and / or the vibration acceleration exceeds the threshold value at this time, the leveling intervention operation is performed, and if it does not exceed, the load weight before dehydration is obtained and compared with the weighing value when the draining is completed. If the difference does not exceed the second weight change threshold value, the high-speed dehydration operation is finally performed, otherwise, the initial step is returned to re-detect and balance.

[0103] The embodiment of the application discloses a washing machine dehydration control method, device, washing machine and storage medium, and the method comprises the following steps: in the process of executing the dehydration function, the rotating speed of the inner drum of the washing machine is increased to a first preset rotating speed, and the inner drum is controlled to drain water; after the inner drum is continuously operated at the first preset rotating speed for a first preset time, it is determined whether the washing machine is completely drained; after it is determined that the washing machine is completely drained, the rotating speed of the inner drum is reduced to a second preset rotating speed, and the inner drum is injected with water; after the water level of the inner drum reaches a preset water level, the rotating speed of the inner drum is increased to a third preset rotating speed, and the water level fluctuation amplitude of the preset water level is obtained; if the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold, a high-speed dehydration operation is performed. By continuously operating the inner drum at the first preset rotating speed for the first preset time, the load of the inner drum is redistributed under the action of centrifugal force, thereby avoiding vibration caused by directly increasing the speed due to misjudgment of balance. The drainage state is dynamically monitored during continuous operation, thereby effectively avoiding the aggravation of eccentricity caused by incomplete drainage. The series of steps of reducing the rotating speed, injecting water to the preset water level, and then increasing the rotating speed to the third preset rotating speed for water level fluctuation detection can deduce the real-time stability state of the entire load distribution, thereby ensuring that the high-speed dehydration stage can be started under the optimal balance state, greatly reducing the vibration and barrel collision risk in the dehydration process, and improving the reliability and service life of the washing machine.

[0104] It should be noted that, for the method embodiment, in order to simply describe, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the application is not limited by the action sequence described, because according to the embodiment of the application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions involved are not necessarily essential for the embodiment of the application.

[0105] Referring to Figure 4 , a structural block diagram of a washing machine dehydration control device provided by the embodiment of the application is shown, and the device specifically comprises the following modules: The inner drum speed-up control module 301 is used for increasing the rotating speed of the inner drum of the washing machine to a first preset rotating speed in the process of executing the dehydration function, and controlling the inner drum to drain water; The inner drum drainage determination module 302 is used for determining whether the washing machine is completely drained after the inner drum is continuously operated at the first preset rotating speed for a first preset time; The inner drum speed-down control module 303 is used for reducing the rotating speed of the inner drum to a second preset rotating speed after it is determined that the washing machine is completely drained, and injecting water into the inner drum; The water level fluctuation amplitude acquisition module 304 is used for increasing the rotating speed of the inner drum to a third preset rotating speed after the water level of the inner drum reaches a preset water level, and acquiring the water level fluctuation amplitude of the preset water level; The dehydration operation execution module 305 is configured to perform a high-speed dehydration operation if the water level fluctuation amplitude does not exceed the fluctuation amplitude threshold.

[0106] In some embodiments, the inner drum speed-up control module 301 comprises: A current load weight obtaining sub-module is configured to obtain a current load weight in the washing machine. A speed-up acceleration determining sub-module is configured to determine a speed-up acceleration of the inner drum based on the current load weight. An inner drum rotating speed increasing sub-module is configured to increase the rotating speed of the inner drum to a first preset rotating speed according to the speed-up acceleration.

[0107] In some embodiments, the inner drum speed-up control module 301 comprises: A water level and water pressure monitoring sub-module is configured to monitor changes in the water level or water pressure of the inner drum during operation at the first preset rotating speed. An inner drum drainage control sub-module is configured to control the inner drum to drain if the fluctuation value of the water level or water pressure is within a preset stable fluctuation range, and control the inner drum to continue operating at the first preset rotating speed until the fluctuation value of the water level or water pressure is within the preset stable fluctuation range if the fluctuation value of the water level or water pressure is not within the preset stable fluctuation range.

[0108] In some embodiments, the inner drum drainage determining module 302 comprises: A load weighing sub-module is configured to periodically weigh the washing machine to obtain a plurality of weighing values. A washing machine drainage determining sub-module is configured to determine whether the washing machine has completed drainage according to the plurality of weighing values.

[0109] In some embodiments, the washing machine drainage determining sub-module comprises: A drainage completion determining unit is configured to determine that the washing machine has completed drainage when it is detected that the difference between two consecutive weighing values is less than or equal to a preset first weight change threshold.

[0110] In some embodiments, the apparatus further comprises: A vibration acceleration obtaining module is configured to obtain the vibration acceleration of the inner drum when obtaining the water level fluctuation amplitude of the preset water level at the third preset rotating speed. An intervention operation execution module is configured to perform a leveling intervention operation when the water level fluctuation amplitude exceeds the fluctuation amplitude threshold and / or the vibration acceleration exceeds an acceleration threshold; the leveling intervention operation comprises stopping the operation of the washing machine and issuing a prompt information to guide the user to redistribute the load or adjust the position of the washing machine.

[0111] In some embodiments, before performing the high-speed dehydration operation, the device further comprises: a pre-dehydration load weighing module configured to weigh a load in the washing machine to obtain a pre-dehydration load weight; a difference value determining module configured to determine a difference value between the pre-dehydration load weight and a last weighing value in a plurality of weighing values obtained by periodically weighing the washing machine; a dehydration execution determining module configured to determine whether the inner drum performs the high-speed dehydration operation according to the difference value.

[0112] In some embodiments, the dehydration execution determining module comprises: a dehydration operation determining sub-module configured to perform the high-speed dehydration operation if the difference value does not exceed a second weight change threshold value, and return to the operation of increasing the rotation speed of the inner drum to the first preset rotation speed if the difference value exceeds the second weight change threshold value.

[0113] In some embodiments, the fluctuation amplitude threshold value is determined based on a current load weight in the washing machine and / or the third preset rotation speed.

[0114] For the device embodiments, since they are basically similar to the system embodiments, they are described more simply, and the relevant parts refer to the part of the method embodiments.

[0115] The embodiments of the present application also provide a washing machine, which comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements each process of the washing machine dehydration control method embodiments and achieves the same technical effects, and thus no further description is given herein.

[0116] The embodiments of the present application also provide a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and the computer program, when executed by a processor, implements each process of the washing machine dehydration control method embodiments and achieves the same technical effects, and thus no further description is given herein.

[0117] It should be noted that, in this document, the terms "comprising" and "including" or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles, or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent in such processes, methods, articles, or devices. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of another identical element in the process, method, article, or device including the element.

[0118] Furthermore, it is noted that the scope of the methods and apparatus of the disclosed embodiments are not limited to what can be precisely set forth in the description above, but can include both structural and functional equivalents thereof. Furthermore, various examples set forth in the description above are not specifically described with reference to any particular aspect or embodiment of the application, but are described in connection with the examples, and are thus included in the scope of the application.

[0119] Those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of instructions to make a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) execute the method described in each embodiment of the present application.

[0120] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims.

Claims

1. A spin control method for a washing machine, characterized by, The method comprises: During the dehydration function, the rotation speed of the inner drum of the washing machine is raised to a first preset rotation speed, and the inner drum is controlled to drain water; After running at the first preset rotation speed for a first preset time, it is determined whether the washing machine has completed water draining; After determining that the washing machine has completed water draining, the rotation speed of the inner drum is reduced to a second preset rotation speed, and the inner drum is filled with water; After the water level of the inner drum reaches a preset water level, the rotation speed of the inner drum is raised to a third preset rotation speed, and the water level fluctuation amplitude of the preset water level is obtained; If the water level fluctuation amplitude does not exceed a fluctuation amplitude threshold, a high-speed dehydration operation is performed.

2. The laundry machine spin control method of claim 1, wherein, The rotation speed of the inner drum of the washing machine is raised to a first preset rotation speed, comprising: Obtain the current load weight in the washing machine; Based on the current load weight, determine the acceleration of the inner drum; According to the acceleration, the rotation speed of the inner drum is raised to a first preset rotation speed.

3. The laundry machine spin control method of claim 1, wherein, The inner drum is controlled to drain water, comprising: During running at the first preset rotation speed, the water level or water pressure change of the inner drum is monitored; If the fluctuation value of the water level or the water pressure is within a preset stable fluctuation range, the inner drum is controlled to drain water; If the fluctuation value of the water level or the water pressure is not within the preset stable fluctuation range, the inner drum is controlled to continue running at the first preset rotation speed until the fluctuation value of the water level or the water pressure is within the preset stable fluctuation range.

4. The laundry machine spin control method of claim 1, wherein, After running at the first preset rotation speed for a first preset time, it is determined whether the washing machine has completed water draining, comprising: Periodically weigh the washing machine to obtain a plurality of weighing values; According to the plurality of weighing values, it is determined whether the washing machine has completed water draining.

5. The laundry machine spin control method of claim 4, wherein, According to the plurality of weighing values, it is determined whether the washing machine has completed water draining, comprising: When it is detected that the difference between two consecutive weighing values is less than or equal to a preset first weight change threshold, it is determined that the washing machine has completed water draining.

6. The laundry machine spin control method of claim 1, wherein, The method further comprises: When obtaining the water level fluctuation amplitude of the preset water level at the third preset rotation speed, the vibration acceleration of the inner drum is obtained; When the water level fluctuation amplitude exceeds the fluctuation amplitude threshold, and / or the vibration acceleration exceeds an acceleration threshold, a leveling intervention operation is performed; the leveling intervention operation comprises controlling the washing machine to stop running, and issuing a prompt information to guide the user to redistribute the load or adjust the position of the washing machine.

7. The laundry machine spin control method of claim 4, wherein, Before performing the high-speed dehydration operation, further comprising: Weigh the load in the washing machine to obtain the pre-dehydration load weight; Determine the difference between the pre-dehydration load weight and the last weighing value in the plurality of weighing values obtained by periodically weighing the washing machine; According to the difference, it is determined whether the inner drum performs the high-speed dehydration operation.

8. The laundry machine spin control method of claim 7, wherein, According to the difference, it is determined whether the inner drum performs the high-speed dehydration operation, comprising: If the difference does not exceed a second weight change threshold, the high-speed dehydration operation is performed; If the difference exceeds the second weight change threshold, return to the operation of raising the rotation speed of the inner drum to a first preset rotation speed.

9. The laundry machine spin control method of claim 2, wherein, The fluctuation amplitude threshold is determined based on a current load weight in the washing machine and / or the third preset rotating speed.

10. A laundry machine spin control apparatus, characterized by, The device comprises: an inner drum speed-up control module, configured to increase a rotating speed of an inner drum of the washing machine to a first preset rotating speed during execution of a dehydration function, and control the inner drum to drain water; an inner drum drainage determination module, configured to determine whether the washing machine is completed with water drainage after the inner drum is continuously operated at the first preset rotating speed for a first preset time length; an inner drum speed-down control module, configured to decrease the rotating speed of the inner drum to a second preset rotating speed after it is determined that the washing machine is completed with water drainage, and inject water into the inner drum; a water level fluctuation amplitude acquisition module, configured to increase the rotating speed of the inner drum to a third preset rotating speed after a water level of the inner drum reaches a preset water level, and acquire a water level fluctuation amplitude of the preset water level; a dehydration operation execution module, configured to execute a high-speed dehydration operation if the water level fluctuation amplitude does not exceed a fluctuation amplitude threshold.

11. A laundry machine characterized by comprise: a processor, a memory, and a computer program stored in the memory and executable on the processor, and the computer program, when executed by the processor, implements the steps of the washing machine dehydration control method according to any one of claims 1-9.

12. A computer-readable storage medium, characterized in that, a computer program is stored in the computer readable storage medium, and the computer program, when executed by the processor, implements the steps of the washing machine dehydration control method according to any one of claims 1-9.

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