A clothing treatment device, a dehydration control method and device thereof

Abstract

The present invention provides a laundry treatment device and its dehydration control method and device. The dehydration control method includes: in the dehydration stage, initially determining whether the laundry in the drum is dehydrated cleanly according to the conduction state of the water level probe; when it is initially determined that the laundry in the drum is dehydrated cleanly, further determining whether the laundry in the drum is dehydrated cleanly in combination with the motor operation parameters; when it is further determined that the laundry in the drum is dehydrated cleanly, controlling the motor of the laundry treatment device to stop rotating and ending the dehydration. The present invention adopts a method combining a water level probe and a control program to determine the dehydration situation of the laundry in the drum, that is, first using the conduction state of the water level probe to initially determine the dehydration situation, and then using the motor acceleration process for auxiliary dryness determination, increasing the accuracy of the dryness determination result, so as to be able to flexibly adjust the dehydration time, while ensuring the dehydration effect, also reducing unnecessary power consumption to a certain extent.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing treatment equipment, and particularly relates to a clothing treatment equipment and its dehydration control method and device. Background Art

[0002] When a washing machine dewatering, the dewatering duration is mostly preset and fixed. However, the water content and dewatering rate of different clothing materials are different, and the preset dewatering duration may not ensure the dewatering effect of the clothing. Reasonably setting the dewatering duration can, to a certain extent, ensure the service life of the washing machine and reduce unnecessary power consumption while ensuring the dewatering effect.

[0003] In the related art, the dewatering program of a washing machine includes multiple dewatering stages with different target speeds. During the dewatering process, according to the time when the washing machine reaches the target speed and / or the current water level frequency value in the inner barrel obtained, the washing machine is controlled to jump to different dewatering stages, making the entire dewatering process more flexible, achieving the purpose of saving time and electricity, and improving the user experience. However, most of the liquid level sensors used in traditional washing machines are for air pressure detection. The air pressure state in the barrel cannot be guaranteed during the rotation of the washing machine barrel. At this time, the measured water level frequency is not accurate, and it is unreasonable to judge the water level situation in the barrel based on this. Summary of the Invention

[0004] In view of this, the present invention provides a clothing treatment equipment and its dehydration control method and device to solve the problem that the existing washing machine cannot ensure the dewatering effect when dewatering with a preset dewatering duration.

[0005] To solve the above technical problems, in the first aspect of the present invention, a dehydration control method for a clothing treatment equipment is provided. The clothing treatment equipment is provided with an inner barrel and an outer barrel, and a water level probe is provided at the bottom of the outer barrel. The conduction state of the water level probe represents the dehydration state of the clothes in the barrel. The dehydration control method includes:

[0006] During the dewatering stage, initially judge whether the clothes in the barrel are dehydrated cleanly according to the conduction state of the water level probe;

[0007] When initially judging that the clothes in the barrel are dehydrated cleanly, then judge whether the clothes in the barrel are dehydrated cleanly in combination with the motor operation parameters;

[0008] When judging again that the clothes in the barrel are dehydrated cleanly, control the motor of the clothing treatment equipment to stop rotating and end the dewatering.

[0009] Further optionally, initially judging whether the clothes in the barrel are dehydrated cleanly according to the conduction state of the water level probe includes:

[0010] When the water level probe is conductive, it is considered that the clothes in the barrel are not dehydrated cleanly;

[0011] When it is detected that the water level probe is continuously non-conductive within a preset time, it is initially determined that the clothes in the drum are dehydrated cleanly.

[0012] Further optionally, the laundry treatment device is provided with a probe detection stage, and initially determines whether the clothes in the drum are dehydrated cleanly according to the conduction state of the water level probe, including:

[0013] Execute the probe detection stage to determine whether the water level probe is conductive;

[0014] When it is first determined that the water level probe is non-conductive, end the probe detection stage and start timing;

[0015] When the timing duration reaches the first preset duration, execute the probe detection stage again;

[0016] When it is determined again that the water level probe is non-conductive, it is initially determined that the clothes in the drum are dehydrated cleanly.

[0017] Further optionally, the motor operation parameters include the motor speed. Judging whether the clothes in the drum are dehydrated cleanly in combination with the motor operation parameters includes:

[0018] Control the motor to accelerate multiple times with the same starting current, the same initial speed, and the same target speed, and record the acceleration time used for each acceleration of the motor;

[0019] Judge whether the dehydration is clean according to the acceleration time of the motor for multiple accelerations.

[0020] Further optionally, at least during two adjacent acceleration operations, insert a dehydration operation.

[0021] Further optionally, executing the probe detection stage includes:

[0022] Monitor the status information of the water level probe;

[0023] When the status information of the water level probe is preset information, it is regarded as the water level probe being non-conductive.

[0024] Further optionally, the motor operation parameters include the motor speed. Judging whether the clothes in the drum are dehydrated cleanly in combination with the motor operation parameters includes:

[0025] Control the motor speed to accelerate from the first speed to the second speed twice successively, and correspondingly record the first acceleration duration and the second acceleration duration;

[0026] Judge whether the clothes in the drum are dehydrated cleanly according to the first acceleration duration and the second acceleration duration.

[0027] Further optionally, controlling the motor speed to accelerate from the first speed to the second speed twice successively includes:

[0028] Control the motor speed to accelerate from the first speed to the second speed, and record the first acceleration duration;

[0029] Control the motor speed to drop back to the first speed, and control the motor to run at the first speed for a second preset duration;

[0030] Control the motor speed to accelerate to the second speed, and record the second acceleration duration.

[0031] Further optionally, determine whether the clothes in the drum are dehydrated cleanly according to the first acceleration duration and the second acceleration duration, including:

[0032] A1. Determine whether the difference between the first acceleration duration and the second acceleration duration is less than or equal to a preset value; if so, execute A2; if not, execute A3;

[0033] A2. Determine that the clothes in the drum have been dehydrated cleanly;

[0034] A3. Re-determine the first acceleration duration and the second acceleration duration, and execute step A1 with the re-determined first acceleration duration and second acceleration duration.

[0035] Further optionally, step A3 includes:

[0036] Assign the second acceleration duration to the first acceleration duration to obtain a new first acceleration duration;

[0037] Control the motor speed to drop back to the first speed, and control the motor to run at the first speed for a second preset duration;

[0038] Control the motor speed to accelerate to the second speed, and record the new second acceleration duration;

[0039] Execute step S1 with the new first acceleration duration and the new second acceleration duration.

[0040] Further optionally, a dehydration step is provided in the process of controlling the motor speed to accelerate from the first speed to the second speed twice successively.

[0041] The second aspect of the present invention provides a dehydration control device for a clothing treatment device, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the dehydration control method according to any one of the first aspect.

[0042] The third aspect of the present invention provides a clothing treatment device, which adopts the dehydration control method according to any one of the first aspect, or includes the dehydration control device according to the second aspect.

[0043] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art:

[0044] The present invention determines the dehydration condition of the clothes in the drum by combining a water level probe with a control program. That is, the conduction state of the water level probe is first used for a preliminary determination of the dehydration condition, and then the motor acceleration process is used for auxiliary drying determination to increase the accuracy of the drying determination result. Thus, the dehydration time can be flexibly adjusted, which not only ensures the dehydration effect but also reduces unnecessary power consumption to a certain extent.

[0045] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0046] As a part of the present invention, the accompanying drawings are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0047] Figure 1 The structural schematic diagram of a clothes treatment device according to an embodiment of the present invention is shown.

[0048] Figure 2 One of the flow schematic diagrams of the dehydration control method of a clothes treatment device according to an embodiment of the present invention is shown.

[0049] Figure 3 The schematic diagram of the preliminary judgment process according to an embodiment of the present invention is shown.

[0050] Figure 4 Another flow schematic diagram of the dehydration control method of a clothes treatment device according to an embodiment of the present invention is shown.

[0051] Figure 5 Another flow schematic diagram of the dehydration control method of a clothes treatment device according to an embodiment of the present invention is shown.

[0052] Figure 6 Another flow schematic diagram of the dehydration control method of a clothes treatment device according to an embodiment of the present invention is shown.

[0053] Figure 7 Another flow schematic diagram of the dehydration control method of a clothes treatment device according to an embodiment of the present invention is shown.

[0054] Wherein: 1 - controller, 2 - balance ring, 3 - inner drum, 4 - outer drum, 5 - wave wheel disc, 6 - motor, 7 - base, 8 - drain valve, 9 - water level probe, 10 - water level sensor, 11 - water inlet valve, 12 - top cover.

[0055] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0056] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner" and "outer" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0057] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "contact", and "communication" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] To solve the problem that the existing washing machine cannot guarantee the dehydration effect when dehydrating for a preset dehydration duration. This embodiment provides a laundry treatment device and its dehydration control method and device. The laundry treatment device includes a pulsator washing machine, a drum washing machine, etc. In this embodiment, the laundry treatment device is preferably a pulsator washing machine. To further elaborate on the technical solutions in the present invention, first, in combination with Figure 1 , the laundry treatment device in the related embodiments of the present invention will be described.

[0059] As Figure 1 shown is a schematic structural diagram of a laundry treatment device according to an embodiment of the present invention. Referring to Figure 1 , the laundry treatment device is provided with an inner tub 3 and an outer tub 4. A water level probe 9 is provided at the bottom of the outer tub 4, and the conduction state of the water level probe 9 represents the dehydration state of the clothes in the tub. In addition, the laundry treatment device further includes: a controller 1, a balance ring 2, a pulsator disk 5, a motor 6, a base 7, a drain pipe opened at the bottom of the outer tub 4, and a drain valve 8 provided on the drain pipe, a water level sensor 10, a water inlet pipe and a water inlet valve 11, and a top cover 12. In addition, the laundry treatment device is also provided with a display module.

[0060] Next, in combination with the drawings, the dehydration control method of this embodiment will be described.

[0061] As Figure 2 shown is a schematic flow diagram of the dehydration control method of a laundry treatment device according to an embodiment of the present invention. As Figure 3The figure shows a schematic diagram of the control logic of the dehydration control method for a laundry treatment device according to an embodiment of the present invention. In combination with Figure 2 , Figure 3 , the dehydration control method includes steps S1 to S3, where:

[0062] S1. In the dehydration stage, initially determine whether the laundry in the tub is dehydrated completely according to the conduction state of the water level probe;

[0063] S2. When it is initially determined that the laundry in the tub is dehydrated completely, then determine whether the laundry in the tub is dehydrated completely in combination with the motor operation parameters;

[0064] S3. When it is determined again that the laundry in the tub is dehydrated completely, control the motor of the laundry treatment device to stop rotating and end the dehydration.

[0065] This dehydration control method determines the dehydration situation of the laundry in the tub by combining the water level probe and the control program, that is, first uses the conduction state of the water level probe to initially determine the dehydration situation, and then combines the motor operation parameters for auxiliary dryness judgment, increasing the accuracy of the dryness judgment result, so that the dehydration time can be adjusted flexibly. While ensuring the dehydration effect, it also reduces unnecessary power consumption to a certain extent.

[0066] Specifically, after the laundry treatment device enters the dehydration stage from the washing program, the controller 1 controls the drain valve 8 to drain water. After the drainage is completed, it enters the dehydration stage. In the dehydration stage, the controller 1 drives the motor 6 to perform dehydration, and the motor speed will rise to the dehydration speed V. Then, the water level probe 9 is used to detect the water volume in the outer tub 4. Considering that the inner tub 3 may be tilted during the dehydration of the laundry treatment device, there is an error in judging the dehydration situation only by the probe state. Therefore, the motor acceleration process is added for auxiliary dryness judgment to increase the accuracy of the dryness judgment result. When it is determined that there is no water surface at the water level probe 9, the program enters the motor acceleration auxiliary dryness judgment process, that is, determines whether the laundry in the tub is dehydrated completely according to the motor speed, aiming to ensure the accuracy and reliability of the judgment of the dehydration state of the laundry in the tub.

[0067] Further optionally, step S1 includes steps B1 and B2, where:

[0068] B1. When the water level probe is conducting, it is regarded that the laundry in the tub is not dehydrated completely;

[0069] B2. If it is monitored that the water level probe is continuously non-conducting within a preset time, initially judge that the laundry in the tub is dehydrated completely.

[0070] Specifically, when the water level probe 9 is conducting, that is, there is a water surface at the water level probe 9, at this time it is regarded that the laundry in the tub is not yet dehydrated completely; if it is monitored that the water level probe 9 is continuously non-conducting within a preset time, that is, there is no water surface at the water level probe 9, at this time it can be initially determined that the laundry in the tub has been dehydrated completely.

[0071] Further optionally, in combination with Figure 4 , the laundry treatment device is provided with a probe detection stage, and step S1 includes S11 to S14, where:

[0072] S11, execute the probe detection stage to determine whether the water level probe is conductive;

[0073] S12, when it is first determined that the water level probe is not conductive, end the probe detection stage and start timing;

[0074] S13, when the timing duration reaches the first preset duration, execute the probe detection stage again;

[0075] S14, when it is determined again that the water level probe is not conductive, initially determine that the clothes in the drum are dehydrated clean.

[0076] Specifically, the laundry treatment device is provided with a probe detection stage. In this embodiment, preferably during the dehydration stage, after the motor speed rises to the dehydration speed V, the probe detection stage is executed, that is, the probe detection stage is executed while dehydrating to determine in real time whether the water level probe is conductive. When it is first detected that the probe in the drum is not conductive, time the first preset duration ts, giving a waiting time for the accumulated water on the drum wall to flow down. At this time, the probe detection stage is not executed. After the timing ends, the probe detection stage is executed again to detect the probe state to increase the judgment accuracy. If the probe is not conductive for the second time, it is determined that there is no water surface at the probe in the drum, and the program enters the motor acceleration-assisted dryness judgment process.

[0077] Further optionally, when executing the probe detection stage in step S11, it includes S111 to S112, where:

[0078] S111, monitor the state information of the water level probe;

[0079] S112, when the state information of the water level probe is preset information, it is regarded that the water level probe is not conductive.

[0080] Specifically, the state information of the water level probe can be a high or low level signal. For example, when receiving a high level signal from the water level probe 9, it is regarded that the water level probe 9 is conductive, and when receiving a low level signal from the water level probe 9, it is regarded that the water level probe 9 is not conductive.

[0081] Further optionally, the motor operating parameters include the motor speed. In step S2, judging whether the clothes in the drum are dehydrated clean in combination with the motor operating parameters includes:

[0082] Controlling the motor to accelerate multiple times with the same starting current, the same initial speed, and the same target speed, and recording the acceleration time used for each acceleration of the motor;

[0083] Judging whether the dehydration is clean according to the acceleration time of the motor accelerating multiple times.

[0084] Specifically, the motor operating parameters include motor speed, current, voltage, etc. Taking the motor speed as an example, with the same starting current, the same initial speed, and the same target speed, the motor is controlled to accelerate multiple times, and the acceleration time used for each acceleration of the motor is recorded; it is determined whether the dehydration is clean according to the acceleration time of the motor's multiple accelerations. That is, it is determined whether the clothes in the drum are dehydrated cleanly according to the acceleration state of the motor.

[0085] Further optionally, at least during two adjacent acceleration operations, a dehydration operation is inserted. Preferably, a dehydration operation is inserted during every two adjacent acceleration operations.

[0086] Specifically, for the dehydration operation: control the motor to rotate at the dehydration speed V for a certain period of time to try to change the weight of the clothes in the drum, which can ensure the accuracy and reliability of the judgment of the dehydration state of the clothes in the drum.

[0087] Further optionally, in combination with Figure 5 , the motor operating parameters include the motor speed. In step S2, in combination with the motor operating parameters, it is further determined whether the clothes in the drum are dehydrated cleanly, including S21 to S22, where:

[0088] S21, control the motor speed to accelerate from the first speed to the second speed twice successively, and correspondingly record the first acceleration duration and the second acceleration duration;

[0089] S22, determine whether the clothes in the drum are dehydrated cleanly according to the first acceleration duration and the second acceleration duration.

[0090] Specifically, when driving the motor 6 to accelerate with the same starting current, under different load conditions, the time taken to accelerate to the same speed is different. Based on this, this embodiment provides a method for auxiliary dryness judgment based on the motor acceleration process. Specifically, control the motor speed to accelerate from the first speed to the second speed twice successively, and correspondingly record the first acceleration duration and the second acceleration duration. By judging whether these two acceleration durations are equal, it can be deduced whether the load in the inner drum is the same; if they are the same, it is considered that the weight of the clothes in the drum no longer changes, that is, the dehydration is clean; if they are different, it is considered that the weight of the clothes in the drum still changes, that is, the dehydration state has not been reached yet. That is, using the probe and the motor as two conditions to flexibly adjust the dehydration time of the washing machine, while ensuring the dehydration effect, it also reduces unnecessary power consumption to a certain extent.

[0091] Specifically, the first speed is preferably the dehydration speed V.

[0092] Further optionally, in combination with Figure 6 , step S21 includes S211 to S213, where:

[0093] S211, control the motor speed to accelerate from the first speed to the second speed, and record the first acceleration duration;

[0094] That is, one motor acceleration process;

[0095] S212, control the motor speed to drop back to the first speed, and control the motor to run at the first speed for a second preset duration;

[0096] S213, control the motor speed to accelerate to the second speed, and record the second acceleration duration;

[0097] That is, the second motor acceleration process.

[0098] Specifically, introduce a dehydration time tx (i.e., the second preset duration) before the second motor acceleration to ensure that the weight of the clothes in the barrel changes as much as possible; introduce a motor speed step before the second motor acceleration to ensure the initial speed condition of the motor acceleration and the comparability of the acceleration times before and after; thereby ensuring the accuracy and reliability of the judgment of the dehydration state of the clothes in the barrel.

[0099] Further optionally, step S22 includes steps A1 to A3, where:

[0100] A1, determine whether the difference between the first acceleration duration and the second acceleration duration is less than or equal to a preset value; if so, execute A2; if not, execute A3;

[0101] A2, determine that the clothes in the barrel have been dehydrated cleanly;

[0102] A3, re-determine the first acceleration duration and the second acceleration duration and execute step A1 with the re-determined first acceleration duration and second acceleration duration.

[0103] Specifically, after obtaining the first acceleration duration t1 and the second acceleration duration t2, take the difference between the two to get the acceleration time difference dt, and then compare the difference dt with the reference value dts (i.e., the preset value). When the acceleration time difference td is less than or equal to the reference value dts, it means that the weight of the clothes in the barrel no longer changes at this time, and it is judged that the clothes in the barrel have been dehydrated cleanly, then control the motor to stop rotating at this time and end the dehydration; if dt is greater than the reference value dts, it means that the weight of the clothes in the barrel still changes at this time, and it is judged that the clothes in the barrel are not completely dehydrated, re-determine the first acceleration duration and the second acceleration duration, and repeat the above judgment step A1 with the newly determined first acceleration duration and second acceleration duration until dt is less than or equal to dts.

[0104] The above acceleration time difference reference value dts is a value close to 0. Since there will be fluctuations in the speed detection when the motor is running, the acceleration time difference dts is introduced for compensation of the time fluctuation caused by the speed fluctuation; the purpose of dehydrating by inserting the time tx between the start current values detected twice before and after is to ensure the accuracy and reliability of the judgment of the dehydration state of the clothes in the barrel.

[0105] Further optionally, step A3 includes:

[0106] A31, assigning the second acceleration duration to the first acceleration duration to obtain a new first acceleration duration;

[0107] A32, controlling the motor speed to drop back to the first speed and controlling the motor to run at the first speed for a second preset duration;

[0108] A33, controlling the motor speed to accelerate to the second speed and recording the new second acceleration duration;

[0109] Performing step A1 with the new first acceleration duration and the new second acceleration duration.

[0110] Specifically, assign t2 to t1, control the motor to decelerate to V1 for dehydration for tx time, then re-obtain the motor acceleration time t2, and repeat the above steps until dt is less than or equal to dts. Compared with re-performing the motor acceleration flow twice and correspondingly obtaining two new first acceleration durations and second acceleration durations, it saves more time while ensuring the drying judgment effect, thereby being more energy-efficient.

[0111] Further optionally, there is a dehydration step in the process of controlling the motor speed to accelerate from the first speed to the second speed twice successively.

[0112] Next, in combination with Figure 7 , a holistic description of the dehydration control method of this embodiment will be given.

[0113] Referring to Figure 7 , this control method includes the following steps:

[0114] (1) Enter the dehydration stage;

[0115] (2) Detect the conduction state of the water level probe;

[0116] (3) Is the probe conducting? If it is conducting, execute (2), if not, execute step (4);

[0117] (4) Wait for ts;

[0118] (5) Detect the conduction state of the water level probe;

[0119] (6) Is the probe conducting? If it is conducting, execute step (5), if not, execute step (7);

[0120] (7) Control the motor to accelerate from speed V1 to V2 and record the acceleration time t1;

[0121] (8) Control the motor speed to drop back to V1 and keep running for tx time;

[0122] (9) Control the motor to accelerate from speed V1 to V2, and record the acceleration time t2;

[0123] (10) Calculate the difference between t1 and t2 to obtain the acceleration time difference dt;

[0124] (11) Check if dt is less than or equal to the reference value dts; if yes, execute step (12), if not, execute step (13);

[0125] (12) The dehydration ends;

[0126] (13) Assign t2 to t1; then repeat steps (8) to (11).

[0127] In the second aspect of this embodiment, a dehydration control device for a laundry treatment device is provided, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the dehydration control method in any one of the first aspects.

[0128] In the third aspect of this embodiment, a laundry treatment device is provided, which adopts the dehydration control method in any one of the first aspects, or includes the dehydration control device in the second aspect.

[0129] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0130] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the above technical solutions, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0131] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A dehydration control method for a laundry treatment device, characterized in that, The laundry treatment device is provided with an inner tub and an outer tub. A water level probe is provided at the bottom of the outer tub. The conduction state of the water level probe characterizes the dehydration state of the laundry in the tub. The dehydration control method includes: In the dehydration stage, initially judge whether the laundry in the tub is dehydrated completely according to the conduction state of the water level probe; When initially judging that the laundry in the tub is dehydrated completely, further judge whether the laundry in the tub is dehydrated completely in combination with the motor operation parameters; When further judging that the laundry in the tub is dehydrated completely, control the motor of the laundry treatment device to stop rotating and end the dehydration; The motor operation parameters include the motor speed. Judging whether the laundry in the tub is dehydrated completely in combination with the motor operation parameters includes: Control the motor speed to accelerate from a first speed to a second speed twice successively, and correspondingly record a first acceleration duration and a second acceleration duration; Judge whether the laundry in the tub is dehydrated completely according to the first acceleration duration and the second acceleration duration.

2. The dehydration control method according to claim 1, wherein Controlling the motor speed to accelerate from the first speed to the second speed twice successively includes: Control the motor speed to accelerate from the first speed to the second speed, and record the first acceleration duration; Control the motor speed to drop back to the first speed, and control the motor to run at the first speed for a second preset duration; Control the motor speed to accelerate to the second speed, and record the second acceleration duration.

3. The dehydration control method according to claim 1, wherein Judging whether the laundry in the tub is dehydrated completely according to the first acceleration duration and the second acceleration duration includes: A1. Judge whether the difference between the first acceleration duration and the second acceleration duration is less than or equal to a preset value; if so, execute A2; if not, execute A3; A2. Determine that the laundry in the tub has been dehydrated completely; A3. Re-determine the first acceleration duration and the second acceleration duration, and execute step A1 with the re-determined first acceleration duration and second acceleration duration.

4. The dehydration control method according to claim 3, wherein Step A3 includes: Assign the second acceleration duration to the first acceleration duration to obtain a new first acceleration duration; Control the motor speed to drop back to the first speed, and control the motor to run at the first speed for a second preset duration; Control the motor speed to accelerate to the second speed, and record the new second acceleration duration; Execute step A1 with the new first acceleration duration and the new second acceleration duration.

5. The dehydration control method according to any one of claims 1-4, wherein During the process of controlling the motor speed to accelerate from the first speed to the second speed twice successively, a dehydration step is provided.

6. The dehydration control method according to claim 5, characterized in that, Initially judging whether the washed laundry is dehydrated completely according to the conduction state of the water level probe includes: When the water level probe is conducting, it is regarded that the laundry in the tub is not dehydrated completely; If it is monitored that the water level probe is continuously non-conducting within a preset time, then initially judge that the laundry in the tub is dehydrated completely.

7. The dehydration control method according to claim 5, wherein The laundry treatment device is provided with a probe detection stage. Initially judging whether the laundry in the tub is dehydrated completely according to the conduction state of the water level probe includes: Execute the probe detection stage to judge whether the water level probe is conducting; When it is first determined that the water level probe is non-conducting, end the probe detection stage and start timing; When the timing duration reaches the first preset duration, the probe detection stage is executed again; When it is determined again that the water level probe is not conducting, it is initially determined that the clothes in the cylinder are dehydrated cleanly.

8. A dehydration control method for a laundry treatment device, characterized in that, The clothes processing device is provided with an inner cylinder and an outer cylinder. A water level probe is provided at the bottom of the outer cylinder. The conduction state of the water level probe represents the dehydration state of the clothes in the cylinder. The dehydration control method includes: In the dehydration stage, initially judge whether the clothes in the cylinder are dehydrated cleanly according to the conduction state of the water level probe; When it is initially judged that the clothes in the cylinder are dehydrated cleanly, then judge whether the clothes in the cylinder are dehydrated cleanly in combination with the motor operation parameters; When it is further judged that the clothes in the cylinder are dehydrated cleanly, control the motor of the clothes processing device to stop rotating and end the dehydration; The motor operation parameters include the motor speed. The judging whether the clothes in the cylinder are dehydrated cleanly in combination with the motor operation parameters includes: Controlling the motor to accelerate multiple times with the same starting current, the same initial speed, and the same target speed, and recording the acceleration time used for each acceleration of the motor; Judge whether the dehydration is clean according to the acceleration time of the motor accelerating multiple times.

9. The dehydration control method according to claim 8, wherein At least in two adjacent acceleration operations, a dehydration operation is inserted.

10. The dehydration control method according to any one of claims 8-9, characterized in that The initially judging whether the washed clothes are dehydrated cleanly according to the conduction state of the water level probe includes: When the water level probe is conducting, it is regarded that the clothes in the cylinder are not dehydrated cleanly; If it is monitored that the water level probe is continuously not conducting within a preset time, then initially judge that the clothes in the cylinder are dehydrated cleanly.

11. The dehydration control method according to any one of claims 8-9, characterized in that The clothes processing device is provided with a probe detection stage. Initially judging whether the clothes in the cylinder are dehydrated cleanly according to the conduction state of the water level probe includes: Executing the probe detection stage to judge whether the water level probe is conducting; When it is first determined that the water level probe is not conducting, end the probe detection stage and start timing; When the timing duration reaches the first preset duration, execute the probe detection stage again; When it is determined again that the water level probe is not conducting, initially judge that the clothes in the cylinder are dehydrated cleanly.

12. A dehydration control device for a laundry treatment apparatus, characterized in that, It includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the dehydration control method according to any one of claims 1-11.

13. A laundry treatment device, characterized in that, It adopts the dehydration control method according to any one of claims 1-11, or includes the dehydration control device according to claim 12.

Images