A control method of a washing apparatus and a washing apparatus

Abstract

The application discloses a control method of a washing equipment and the washing equipment, and the washing equipment comprises a barrel for containing laundry and an intermittent dehydration program for controlling the barrel to rotate according to a set rotation-stop time sequence. During the intermittent dehydration, the actual rotating speed of the barrel in the rotating process is acquired, and the subsequent rotation-stop time sequence is adjusted according to the acquired actual rotating speed. In the application, the actual rotating speed of the barrel is acquired, so that the actual load in the barrel can be reflected. When the actual rotating speed is small, it indicates that the actual load in the barrel is large, and further indicates that a large amount of washing water which is not discharged in time is accumulated in the barrel. The subsequent rotation-stop time sequence of the barrel is adjusted according to the acquired actual rotating speed, so that the accumulated washing water can be discharged in time, the load in the barrel is reduced, and the phenomenon that the motor driving the barrel to rotate is heated and suddenly stopped is avoided. The washing equipment adopting the control method of the application is not easy to heat the motor during the dehydration process, and the dehydration effect is good.

Description

Technical Field

[0001] This invention belongs to the field of mechanical equipment technology, specifically, it relates to a control method for a washing machine and the washing machine itself. Background Technology

[0002] "Washing equipment" refers to a general term for a class of household appliances that can perform washing and dehydration processes, such as washing machines and washer-dryer combos.

[0003] Washing equipment generally consists of an inner tub, an outer tub, and a casing, arranged sequentially from the inside out. The inner tub holds the clothes, and its side walls have multiple rows of dehydration holes. During the spin-drying process, a motor drives the inner tub to rotate, and the water in the clothes is discharged from the inner tub through the dehydration holes on the side walls and the drain hole at the bottom under the action of centrifugal force, into the outer tub, and then discharged from the washing equipment through the drain outlet and drain pipe.

[0004] Currently, the dehydration method of washing equipment is: intermittent dehydration → continuous dehydration → inertial dehydration → braking, to complete the dehydration. Among them, intermittent dehydration is dehydration according to a set rotation and stop sequence, such as: the motor rotates for 4 seconds and stops for 4 seconds, repeating 4 times, for a total of 30 seconds, with the speed gradually increasing, and then connected to the subsequent continuous dehydration.

[0005] In existing technologies, the intermittent dehydration curves of washing equipment are fixed. During intermittent dehydration, regardless of whether the weight, material, or volume of the load is the same, the same intermittent dehydration sequence is used. However, because the weight, material, and volume of the load vary, the efficiency of water being spun out from the load is also completely different.

[0006] Therefore, if the same intermittent spin-drying sequence is used throughout the entire spin-drying process, the water may not be drained in time when the efficiency of water removal is high. This causes the washing water to accumulate in the drum, resulting in a phenomenon called "spraying with water in it." Spraying with water in it often causes the motor driving the drum to overheat, shut down, or even shorten its lifespan. In addition, it also reduces the spin-drying efficiency.

[0007] In view of this, the present invention is hereby proposed. Summary of the Invention

[0008] The purpose of this invention is to provide a control method for a washing device, so as to prevent wash water from accumulating in the drum during the dehydration process, reduce motor overheating and shutdown, and achieve good dehydration effect. Another purpose of this invention is to provide a washing device that achieves good dehydration effect, prevents motor overheating and shutdown, and extends service life.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0010] A control method for a washing machine, the washing machine including a tub for holding clothes and an intermittent spin-drying program for controlling the tub to rotate according to a set rotation and stop sequence, wherein during intermittent spin-drying, the actual rotation speed of the tub during the rotation process is acquired, and the subsequent rotation and stop sequence is adjusted according to the acquired actual rotation speed.

[0011] Furthermore, the washing equipment has a preset rotation speed v0, and the subsequent rotation and stop timing is adjusted as follows:

[0012] If v < v0, then control to increase the stop duration in the turn-stop sequence, and / or control to decrease the turn duration in the turn-stop sequence.

[0013] Furthermore, if the actual rotational speed v is less than the preset rotational speed v0, then the rotation duration in the control rotation-stop sequence is less than the stop duration;

[0014] Preferably, the stop duration in the control stop sequence is negatively correlated with the actual rotational speed v, and / or the rotation duration in the control stop sequence is positively correlated with the actual rotational speed v.

[0015] Furthermore, a minimum rotational speed v0' is preset, and v0' < v0. The actual rotational speed v is compared with the preset minimum rotational speed v0'. If v < v0', the intermittent dehydration program is paused and drainage begins. After drainage is completed, the intermittent dehydration program continues.

[0016] Furthermore, a preset number of times n0 is set, and the number of times the actual rotational speed v < v0 is accumulated is n. The accumulated number of times n is compared with the preset number of times n0. If n > n0, the intermittent dehydration program is paused and drainage begins. After drainage is completed, the intermittent dehydration program is resumed.

[0017] Furthermore, the washing equipment includes a motor for driving the drum to rotate, and obtaining the actual rotational speed of the drum includes:

[0018] The back electromotive force E of the motor is collected, and the collected back electromotive force E is substituted into the calculation model v = E / K to calculate the actual rotational speed v, where K is the back electromotive force constant of the motor.

[0019] Furthermore, obtaining the actual rotational speed of the barrel includes: when the motor stops rotating, controlling the acquisition of the back electromotive force E.

[0020] Furthermore, the back electromotive force E is collected once every a-turn-stop cycle, where a ≥ 0 and is an integer.

[0021] Furthermore, the control interval switching period 'a' is positively correlated with the collected back electromotive force 'E'.

[0022] The present invention also provides a washing device, which is controlled by any of the control methods described in the above technical solutions.

[0023] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0024] In this invention, by obtaining the actual rotation speed of the tub, the actual load inside the tub can be reflected. When the actual rotation speed is low, it indicates that the actual load inside the tub is high, which further indicates that a large amount of washing water has accumulated inside the tub and has not been drained in time. Adjusting the subsequent rotation and stopping sequence of the tub according to the obtained actual rotation speed is beneficial to drain the accumulated washing water in time, reduce the load inside the tub, and thus avoid phenomena such as overheating and sudden stop of the motor driving the tub rotation.

[0025] In this invention, the subsequent rotation and stop sequence is adjusted according to the actual rotation speed, so that the washing water separated by centrifugation can be discharged from the washing equipment in a timely manner, avoiding the washing water separated by centrifugation from accumulating in the drum for a long time and causing secondary soaking of clothes. In other words, the washing equipment of this invention has a better dehydration effect on clothes and dehydrates them more thoroughly.

[0026] In this invention, if the actual rotational speed v is less than the preset rotational speed v0, it indicates that the actual rotational speed of the tub is lower than the preset rotational speed v0; further, it indicates that the load inside the tub is large, meaning that there is washing water accumulated in the tub that has been centrifuged but not drained in time. In this case, by increasing the stop duration in the rotation-stop sequence, the centrifuged washing water can fall when the tub stops and has sufficient time to drain out of the washing equipment, effectively preventing the accumulation of washing water in the tub.

[0027] The washing equipment of the present invention is controlled by the control method of the present invention, which makes it less likely for the motor of the washing equipment to overheat, and the washing equipment has a better dehydration effect.

[0028] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0029] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0030] Figure 1 This is a flowchart of a control method according to the present invention;

[0031] Figure 2 This is a flowchart of another control method of the present invention;

[0032] Figure 3 This is a flowchart of another control method of the present invention;

[0033] Figure 4 This is a flowchart of another control method of the present invention;

[0034] Figure 5 This is a flowchart of another control method of the present invention.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] "Washing equipment" refers to a general term for a class of household appliances that can perform washing and dehydration processes, such as washing machines and washer-dryer combos.

[0040] like Figures 1 to 5 As shown, this invention discloses a control method for a washing machine. The washing machine includes a tub for holding clothes. The washing machine also includes an intermittent spin-drying program that controls the tub to rotate according to a set rotation-stop sequence. Specifically, the intermittent spin-drying program includes: a rotation process that controls the tub to rotate and a pause process that controls the tub to stop, wherein the rotation process and the pause process alternate according to the rotation-stop sequence.

[0041] The control method of the washing equipment of the present invention includes: during intermittent spin-drying, acquiring the actual rotation speed of the drum during rotation, and adjusting the subsequent rotation and stop sequence according to the acquired actual rotation speed.

[0042] Specifically, such as Figure 1 As shown, the control method for the washing equipment includes:

[0043] S1, Begin;

[0044] S2. Set the rotation and stop sequence; for example: control the barrel to pause for 4 seconds every 4 seconds of rotation;

[0045] S3. Control the barrel to perform intermittent dehydration according to the rotation and stop sequence;

[0046] S4. Obtain the actual rotational speed v of the barrel during its rotation process;

[0047] S5. Adjust the subsequent start-stop timing based on the actual rotational speed v obtained;

[0048] S6. Determine whether intermittent dehydration is complete;

[0049] S7. If yes, control the intermittent dehydration program to end; otherwise, repeat steps S3 to S7.

[0050] Step S6 includes:

[0051] S61. Obtain the duration t of the intermittent dehydration program;

[0052] S62. Determine whether the acquired duration t is greater than or equal to the preset duration t0; wherein, the preset duration t0 can be 30 seconds, 60 seconds, 90 seconds, etc.

[0053] S63. If yes, then the intermittent dehydration is considered complete; otherwise, the intermittent dehydration process is considered incomplete.

[0054] In this invention, by obtaining the actual rotation speed of the tub, the actual load inside the tub can be reflected. When the actual rotation speed is low, it indicates that the actual load inside the tub is high, which further indicates that a large amount of washing water has accumulated inside the tub and has not been drained in time. Adjusting the subsequent rotation and stopping sequence of the tub according to the obtained actual rotation speed is beneficial to drain the accumulated washing water in time, reduce the load inside the tub, and thus avoid phenomena such as overheating and sudden stop of the motor driving the tub rotation.

[0055] Furthermore, the present invention adjusts the subsequent rotation and stop sequence according to the actual rotation speed, so that the washing water separated by centrifugation can be discharged from the washing equipment in a timely manner, avoiding the washing water separated by centrifugation from accumulating in the drum for a long time and causing secondary soaking of clothes. In other words, the washing equipment of the present invention has a better dehydration effect on clothes and dehydrates them more thoroughly.

[0056] As an embodiment of the present invention, adjusting the subsequent turn-stop sequence includes: if the actual rotation speed v is less than the preset rotation speed v0, then controlling the increase of the stop duration in the turn-stop sequence.

[0057] Specifically, such as Figure 2 As shown, the control method for the washing equipment includes:

[0058] S1, Begin;

[0059] S2. Set the start-stop sequence and preset the rotation speed v0; where the preset rotation speed v0 is obtained through extensive testing and verification during the development phase of the washing equipment; for example, the preset rotation speed v0 is 600 rpm / min;

[0060] S3. Control the barrel to perform intermittent dehydration according to the rotation and stop sequence;

[0061] S4. Obtain the actual rotational speed v of the barrel during its rotation process;

[0062] S5. Determine whether the actual rotational speed v obtained is less than the preset rotational speed v0;

[0063] S6. If yes, then control the increase of the stop duration in the turn-stop sequence; otherwise, directly execute step S7.

[0064] S7. Determine whether intermittent dehydration is complete;

[0065] S8. If yes, control the intermittent dehydration program to end; otherwise, repeat steps S3 to S8.

[0066] In this embodiment, if the actual rotational speed v is less than the preset rotational speed v0, it indicates that the actual rotational speed of the tub is lower than the preset rotational speed v0; further, it indicates that the load inside the tub is large, that is, there is washing water accumulated in the tub that has been centrifuged but not discharged in time. At this time, by increasing the stop time in the rotation-stop sequence, when the tub stops, the centrifuged washing water can fall and have sufficient time to be discharged outside the washing equipment, effectively avoiding the accumulation of washing water in the tub.

[0067] Conversely, if the actual rotation speed v is greater than or equal to the preset rotation speed v0, it indicates that the actual rotation speed of the drum is not lower than the preset rotation speed v0; further indicating that there is no accumulated washing water in the drum. In this case, there is no need to adjust the rotation and stop sequence, ensuring high dehydration efficiency.

[0068] As another embodiment of the present invention, adjusting the subsequent rotation and stop sequence includes: if the actual rotation speed v is less than the preset rotation speed v0, then controlling the reduction of the rotation duration in the rotation and stop sequence.

[0069] In this embodiment, if the actual rotational speed v is less than the preset rotational speed v0, it indicates that the actual rotational speed of the tub is lower than the preset rotational speed v0; further, it indicates that the load inside the tub is large, that is, there is washing water accumulated in the tub that has been centrifuged but not drained in time. At this time, the rotation duration in the rotation-stop sequence is reduced to avoid the motor overheating or even stopping suddenly during the process of the motor driving the tub to rotate due to the large amount of washing water accumulated in the tub.

[0070] In another embodiment of the present invention, the control method for the washing equipment includes: if the actual rotational speed v is less than the preset rotational speed v0, then controlling the rotation duration in the rotation-stop sequence to be less than the stop duration. For example, controlling the rotation duration in the rotation-stop sequence to be 3 seconds and the stop duration to be 5 seconds.

[0071] In this embodiment, if the actual rotational speed v is less than the preset rotational speed v0, it indicates that the actual rotational speed of the tub is lower than the preset rotational speed v0; further, it indicates that the load inside the tub is large, that is, there is washing water accumulated in the tub that has been centrifuged but not drained in time. At this time, the rotation duration in the control rotation-stop sequence is less than the stop duration, so that the washing water accumulated in the tub has enough time to drain in time, so as to avoid the motor overheating due to the large load inside the tub during subsequent rotation.

[0072] As one implementation method of this embodiment, the stop duration in the control rotation-stop sequence is negatively correlated with the actual rotational speed v.

[0073] In this embodiment, the smaller the actual rotation speed v, the more washing water accumulates in the tub. At this time, the control stop time is negatively correlated with the actual rotation speed v, which can ensure that the washing water in the tub is fully discharged.

[0074] In another implementation of this embodiment, the rotation duration in the control rotation-stop sequence is positively correlated with the actual rotation speed v obtained.

[0075] In this embodiment, the smaller the actual rotation speed v, the more washing water accumulates in the tub. At this time, the control rotation time is positively correlated with the actual rotation speed v to avoid the tub rotating for too long, which would cause the motor to overheat.

[0076] As another embodiment of the present invention, the control method of the washing equipment includes:

[0077] The minimum speed is preset to v0', and v0' < v0; if the actual speed v < v0' is obtained, the intermittent dehydration program is paused and drainage begins; after drainage is completed, the intermittent dehydration program is resumed.

[0078] Specifically, such as Figure 3 As shown, the control steps of the washing equipment include:

[0079] S1, Begin;

[0080] S2. Set the rotation and stop sequence, preset rotation speed v0, and minimum rotation speed v0'; where the minimum rotation speed v0' is obtained through extensive testing and verification during the development phase of the washing equipment; the minimum rotation speed v0' can be the rotation speed corresponding to the washing equipment during the washing process, for example: 300 rpm / min; S3. Control the drum to perform intermittent spin-drying according to the rotation and stop sequence;

[0081] S4. Obtain the actual rotational speed v of the barrel during its rotation process;

[0082] S5. Determine whether the actual rotational speed v is less than the minimum rotational speed v0';

[0083] S6. If yes, control pause the intermittent dehydration program and execute the drainage program. After drainage is completed, repeat steps S3 to S6; otherwise, control execute step S7.

[0084] S7. Determine whether the actual rotational speed v obtained is less than the preset rotational speed v0;

[0085] S8. If yes, control the increase of the stop duration in the turn-stop sequence; otherwise, directly execute step S9.

[0086] S9. Determine whether intermittent dehydration is complete;

[0087] S10. If yes, control the intermittent dehydration program to end; otherwise, repeat steps S3 to S10.

[0088] In this embodiment, if the actual rotational speed v is less than the minimum rotational speed v0', it indicates that the actual rotational speed v is small, further indicating that there is a large amount of washing water accumulated in the tub, resulting in a heavy load. This load has severely reduced the rotational speed of the tub, affecting the spin-drying effect. At this time, the intermittent spin-drying program is paused, and a drainage program is executed to fully drain the washing water from the tub and prevent damage to the motor due to excessive load.

[0089] Conversely, if the actual rotational speed v is greater than or equal to the minimum rotational speed v0' but less than v0, it indicates that washing water has accumulated in the tub, but the amount is relatively small. In this case, there is no need to specifically control the drainage program; by increasing the stop duration in the rotation-stop sequence, the accumulated washing water can be drained. This eliminates the need to pause the intermittent spin-drying program, ensuring relatively high spin-drying efficiency for the washing equipment, and the control process is simple and convenient.

[0090] As another embodiment of the present invention, the control method of the washing equipment includes:

[0091] The preset number of times n0 is calculated. The accumulated number of times the actual rotational speed v < v0 is then compared with the preset number of times n0 is calculated. If the accumulated number of times n is greater than the preset number of times n0 is calculated, the intermittent dehydration program is paused, and drainage begins. After drainage is completed, the intermittent dehydration program resumes. The preset number of times n0 can be 1, 2, 3, etc.

[0092] Specifically, such as Figure 4 As shown, the control steps of the washing equipment include:

[0093] S1, Begin;

[0094] S2, Set the start / stop sequence, preset speed v0, and preset number of times n0;

[0095] S3. Control the barrel to perform intermittent dehydration according to the rotation and stop sequence;

[0096] S4. Obtain the actual rotational speed v of the barrel during its rotation process;

[0097] S5. Determine whether the actual rotational speed v obtained is less than the preset rotational speed v0;

[0098] S6. If so, control the increase of the stop duration in the turn-stop sequence and accumulate n times when the actual speed v is less than the preset speed v0;

[0099] S7. Determine whether the cumulative number of times n is greater than the preset number of times n0;

[0100] S8. If yes, control pauses the intermittent dehydration program and executes the drainage program. After drainage is completed, repeat steps S3 to S8; otherwise, control directly executes step S9.

[0101] S9. Determine whether intermittent dehydration is complete;

[0102] S10. If yes, control the intermittent dehydration program to end; otherwise, repeat steps S3 to S10.

[0103] In this embodiment, if the cumulative number of times n is greater than the preset number of times n0, it indicates that the actual rotation speed v has been detected to be less than the preset rotation speed v0 multiple times, further indicating that there is a large amount of washing water accumulated in the tub and the load is large. At this time, the intermittent spin-drying program is paused and a drainage program is executed to fully drain the washing water from the tub to avoid damage to the motor due to excessive load.

[0104] As one embodiment of the present invention, the washing equipment includes a motor for driving the tub to rotate, and obtaining the actual rotational speed of the tub includes:

[0105] The back electromotive force E of the motor is collected, and the collected back electromotive force E is substituted into the calculation model v = E / K to calculate the actual rotational speed v, where K is the back electromotive force constant of the motor.

[0106] Specifically, such as Figure 5 As shown, the control steps of the washing equipment include:

[0107] S1, Begin;

[0108] S2, set the start / stop sequence, preset speed v0, and preset back electromotive force constant K;

[0109] S3. Control the barrel to perform intermittent dehydration according to the rotation and stop sequence;

[0110] S4. Collect the back electromotive force E of the motor;

[0111] S5. Substitute the collected back electromotive force E into the calculation model v = E / K to calculate the actual rotational speed v;

[0112] S6. Determine whether the actual rotational speed v obtained is less than the preset rotational speed v0;

[0113] S7. If yes, control the increase of the stop duration in the transition sequence; otherwise, directly execute step S8.

[0114] S8. Determine whether intermittent dehydration is complete;

[0115] S9. If yes, control the intermittent dehydration program to end; otherwise, repeat steps S3 to S8.

[0116] In step S4, the acquisition of the back electromotive force E of the motor includes:

[0117] The back electromotive force (EMF) E of the motor is acquired using methods such as the back EMF zero-crossing method, the back EMF integration and reference voltage comparison method, the back EMF integration and phase-locked loop method, and the freewheeling diode method. Specifically, the washing equipment includes a back EMF detector to acquire the back EMF value of the motor during intermittent spin-drying; or, the washing equipment acquires the back EMF value during intermittent spin-drying through a voltage acquisition circuit.

[0118] Furthermore, in this embodiment, obtaining the actual rotational speed of the barrel includes: when the motor stops rotating, controlling the acquisition of the back electromotive force E.

[0119] In this embodiment, the actual rotational speed of the tub is calculated by obtaining the back electromotive force E, making the method of obtaining the actual rotational speed of the tub simple and reliable. The actual rotational speed of the tub obtained through this embodiment can represent the actual rotation of the tub at present, which is beneficial for the washing equipment to make adaptive adjustments to the subsequent rotation and stop sequence based on the actual rotation of the tub.

[0120] As another implementation of this embodiment, the back electromotive force E is collected once every a-turn-stop cycle, where a≥0 and is an integer.

[0121] For example, the back electromotive force E is collected once every one turn-stop cycle. Here, one turn-stop cycle represents one "turn-stop" process.

[0122] In this embodiment, the back electromotive force E is collected once every 'a' rotation-stop cycle, ensuring that the washing equipment detects the back electromotive force according to a set regular cycle throughout the entire intermittent dehydration process. Furthermore, this embodiment enables the adjustment of the rotation-stop sequence based on the actual drum rotation rate calculated from the back electromotive force throughout the entire intermittent dehydration process, continuously improving the intermittent dehydration process of the washing equipment.

[0123] In another implementation of this embodiment, the control interval switching period a is positively correlated with the collected back electromotive force E.

[0124] In this embodiment, the larger the back electromotive force E collected, the greater the actual rotation speed of the drum, which further indicates that the load inside the drum is small and no washing water has accumulated inside the drum. In this way, the control interval rotation and stop cycle a is large, which realizes real-time monitoring of the drum rotation speed during intermittent spin-drying without making the detection too frequent and complicating the control process of the washing equipment.

[0125] The present invention also provides a washing device, which is controlled by the control method of any of the washing devices described in the above technical solutions.

[0126] The washing equipment of the present invention is controlled by the control method of the present invention, which makes it less likely for the motor of the washing equipment to overheat, and the washing equipment has a better dehydration effect.

[0127] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A control method for a washing machine, the washing machine comprising a tub for holding clothes and an intermittent spin-drying program for controlling the tub to rotate according to a set rotation-stop sequence, characterized in that: The washing equipment is preset to a rotation speed of v0; During intermittent dehydration, the actual rotation speed of the barrel during the rotation process is obtained, and the obtained actual rotation speed v is compared with the preset rotation speed v0. If v < v0, the stop time in the rotation-stop sequence is increased, and / or the rotation time in the rotation-stop sequence is decreased. The preset number of times n0 is used. The number of times the actual rotation speed v < v0 is accumulated is n. The accumulated number of times n is compared with the preset number of times n0. If n > n0, the intermittent dehydration program is paused and drainage begins. After drainage is completed, the intermittent dehydration program is resumed.

2. The control method for a washing device according to claim 1, characterized in that: If the actual rotational speed v is less than the preset rotational speed v0, then the rotation duration in the control rotation-stop sequence will be less than the stop duration.

3. The control method for a washing device according to claim 2, characterized in that: The stop duration in the control stop sequence is negatively correlated with the actual rotational speed v, and / or the rotation duration in the control stop sequence is positively correlated with the actual rotational speed v.

4. A control method for a washing device according to any one of claims 1-3, characterized in that: The washing equipment includes a motor for driving the drum to rotate, and the actual rotational speed of the drum is obtained by: The back electromotive force (EMF) E of the motor is collected, and the collected E is substituted into the calculation model v = E / K to calculate the actual rotational speed v, where K is the back EMF constant of the motor.

5. The control method for a washing device according to claim 4, characterized in that: Obtaining the actual rotational speed of the barrel includes: when the motor stops rotating, controlling and collecting the back electromotive force E.

6. The control method for a washing device according to claim 5, characterized in that: The back electromotive force E is collected once every a-turn-stop cycle, where a ≥ 0 and is an integer.

7. The control method for a washing device according to claim 6, characterized in that: The control interval switching period 'a' is positively correlated with the collected back electromotive force 'E'.

8. A washing device, characterized in that: The washing equipment is controlled using the control method described in any one of claims 1-7.

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