Washing machine dehydration control method and washing machine

Abstract

The invention discloses a washing machine dehydration control method and a washing machine, the washing machine dehydration control method comprises the following steps: S1, starting a dehydration program; s2, judging whether the eccentric load of the dewatering barrel exceeds a preset eccentric degree or not, if so, adjusting the rotating speed of the dewatering barrel, and continuing to execute the dewatering procedure; s3, if it is judged that the eccentric load of the dewatering barrel still exceeds the preset eccentric degree, the unbalance loading position when the dewatering barrel is eccentric is obtained, the dewatering barrel is controlled to rotate away from the unbalance loading position, and the dewatering barrel is restarted at the non-unbalance loading position to continue to execute the dewatering procedure. According to the dehydration control method of the washing machine, the unbalance loads of different degrees of the dehydration barrel are shaken away through the multi-stage deviation rectification program, the dehydration efficiency is improved, and meanwhile the energy consumption of the washing machine is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a washing machine dehydration control method and a washing machine. Background Art

[0002] At present, the inner drum of a drum washing machine needs to rotate during the dehydration process to drain the water in the load. The load in the inner drum will rotate along with the rotation of the inner drum. During the rotation, the load can easily deviate from the center position of the inner drum and be distributed to one side of the inner drum, causing the center of gravity of the inner drum to shift; or, due to the water absorption capacity and material inconsistency of the laundry, the laundry is prone to uneven distribution, which will cause the rotating axis of the washing machine to deviate from the center position, often resulting in unbalanced dehydration, causing the washing machine to vibrate during dehydration and make loud dehydration noise. In severe cases, it may even cause the washing machine to vibrate violently and move. The eccentric vibration of the washing machine not only has a great impact on the electrical and mechanical life of the washing machine, but also seriously affects the user experience of the washing machine and reduces user satisfaction with the washing machine.

[0003] In the prior art, Chinese patent application number CN201410268312 proposes a washing machine dehydration balancing method and washing machine. The washing machine includes a main control board, a motor drive system, and a water inlet system. The washing machine also includes a balance detection system. The balance detection system includes an eccentricity detection sensor device and a position detection sensor device. The eccentricity detection sensor device detects the eccentricity of the inner tub, and the position detection sensor device locates the eccentricity position. After washing and before dehydration begins, the inner tub of the washing machine is dynamically balanced. The position detection sensor device accurately locates the imbalance point. At the same time, the washing machine's water inlet valve is controlled to open, and the water inlet is controlled by flow rate or time. This water is replenished to the lighter side of the inner tub to achieve the purpose of inner tub balance, so that the washing machine can start and run smoothly every time. The dehydration balancing method and washing machine disclosed in this application can correct the imbalance of the load by adding some water to the lighter side of the washing machine's drum to keep the inner drum balanced. However, there are many reasons for the unbalanced load in the dehydration drum, and this method cannot solve the unbalanced load problem caused by all reasons. If the number of corrections reaches a certain number, an E3 fault will be reported, which not only wastes water and electricity, but also easily causes complaints from users.

[0004] Alternatively, Chinese invention patent application number CN201910619595 discloses a control method for a washing machine. Upon entering the spin cycle, the washing machine's control unit determines whether the load eccentricity detected by a sensor is greater than a set eccentricity value M0. If so, the control unit controls the inner tub to rotate and transfer the eccentric load to a set range within the washing machine's factory settings, allowing the machine to start normally. If not, the machine starts normally. The set range is a region stored in the washing machine at the factory, where the average probability of the outer tub colliding with the control lever during startup within this range, as determined through experimental measurements, is less than the set probability. By transferring the eccentric load to the set range during startup, this application reduces the probability of the outer tub colliding with the housing or control lever during use and addresses the issue of difficulty starting the washing machine due to large eccentricity during the spin cycle. However, this control method is complex to operate and can result in excessive energy consumption when the spin tub is not severely eccentric. Furthermore, the factory-set range, which is stored in the machine at the factory, can change over time, making the control method described in this solution inappropriate for all eccentricity situations during the spin cycle, thereby reducing the machine's spin efficiency.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a dehydration control method for a washing machine. After the washing machine starts the dehydration program, it determines whether the eccentric load of the dehydration barrel exceeds a preset eccentricity. If so, the rotation speed of the dehydration barrel is adjusted and the dehydration program is continued. When it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to rotate away from the eccentric position, and the dehydration barrel is restarted in the non-eccentric position to shake off the eccentric load. The eccentric load of the dehydration barrel is corrected using multi-stage steps. Different correction methods are performed according to different causes of eccentricity of the dehydration barrel during the dehydration process to improve the dehydration efficiency.

[0007] Another object of the present invention is to provide a washing machine that adopts the above-mentioned washing machine dehydration control method.

[0008] To achieve the above object, the technical solution of the present invention is:

[0009] A washing machine dehydration control method comprises the following steps:

[0010] S1, start dehydration program;

[0011] S2, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel and continuing the dehydration process;

[0012] S3. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel is obtained, the dehydration barrel is controlled to rotate away from the eccentric load position, and the dehydration barrel is restarted at the non-eccentric load position to continue the dehydration process.

[0013] In the above scheme, after the washing machine starts the dehydration program, it performs step S2 to determine whether the eccentric load of the dehydration barrel exceeds the preset eccentricity. If so, the speed of the dehydration barrel is adjusted and the dehydration program is continued. By adjusting the speed of the dehydration barrel, the load distribution position in the dehydration barrel is changed, thereby preventing the dehydration barrel from continuing to hit the rod during the subsequent dehydration process. After the washing machine completes step S2, the washing machine still detects that the eccentric load of the dehydration barrel exceeds the preset eccentricity, then performs step S3: if it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to turn away from the eccentric load position, and the dehydration barrel is restarted in the non-eccentric load position to continue to execute the dehydration program. When the dehydration barrel is restarted in the non-eccentric load position, the difference between the load in the dehydration barrel and the movement speed of the dehydration barrel is used to balance the distribution position of the eccentric load and ensure the dehydration efficiency of the dehydration barrel.

[0014] Optionally, the radial plane of the dehydration barrel is divided into a plurality of regions symmetrical about the axis of the dehydration barrel, and the region where the dehydration barrel is located at an eccentric load position is defined as an eccentric load region;

[0015] In step S3, the eccentric position of the dehydration barrel is obtained by obtaining the area where the eccentric position of the dehydration barrel is located when the dehydration barrel is eccentric;

[0016] Preferably, the radial plane of the dehydration barrel is divided into four areas symmetrical about the axis of the dehydration barrel.

[0017] In the above scheme, the radial plane of the dehydration barrel is divided into multiple areas symmetrical with the center of the dehydration barrel axis. When detecting the overload position of the dehydration barrel, it is only necessary to detect in which area the position of the dehydration barrel when it hits the rod, and then judge the overload condition in the dehydration barrel based on the area, which simplifies the position judgment process of the load in the dehydration barrel and improves the dehydration efficiency.

[0018] Optionally, a sensor is provided on the axis of the washing machine relative to the dehydration barrel, and the sensor is used to detect the real-time position of the dehydration barrel on the radial plane;

[0019] In step S3, the real-time position of the radial plane when the dehydration barrel is eccentric is obtained, and the eccentricity of the dehydration barrel and the degree of eccentricity of the eccentric load area are determined according to the angle formed by the radial plane at the real-time position and the radial plane at the initial position;

[0020] Preferably, in step S3, it is determined multiple times whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level. If so, the eccentric position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to rotate away from the eccentric position, and the dehydration barrel is restarted at the non-eccentric position to continue the dehydration procedure.

[0021] In the above scheme, the washing machine obtains the real-time position of the radial plane when the dehydration barrel is eccentric, and judges the overload area of ​​the dehydration barrel and the degree of eccentricity of the overload area according to the angle formed by the real-time position of the radial plane and the initial position. A more effective shaking strategy is formulated according to the degree of eccentricity in the dehydration barrel, thereby improving the dehydration efficiency during the dehydration process.

[0022] Optionally, in step S3, during each dehydration process, if yes, the startup data of different overload areas and overload degrees are recorded, the startup data including the electric speed and the rotation data of the dehydration barrel at different speeds, to generate a speed strategy for starting the dehydration barrel in a non-overload position during the next dehydration process.

[0023] In the above scheme, the washing machine records the startup data of different weights of loads in the dehydration barrel, load distribution positions, and restarts in different starting areas, generates the user's dehydration data, formulates a dehydration strategy that conforms to the user's usage habits, and improves the correction efficiency of the dehydration barrel when restarting the dehydration barrel in a non-biased load position, thereby improving the dehydration efficiency of the washing machine.

[0024] Optionally, after step S3, the following steps are further included:

[0025] Step S4: If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the dehydration barrel when it is eccentric is obtained, and after adding water to the dehydration barrel, the dehydration barrel is controlled to move away from the eccentric load area, and the dehydration barrel is restarted in the non-eccentric load area to continue the dehydration program.

[0026] In the above scheme, after step S3 is completed, the load in the dehydration barrel still cannot be shaken out. At this time, water is added to the dehydration barrel. After the unbalanced load is soaked by the subsequently added water, during the subsequent rotation of the dehydration barrel, the load will be dried and evenly distributed on the lower edge of the dehydration barrel under the action of centrifugal force, thereby being shaken out, thereby keeping the subsequent dehydration process stable.

[0027] Optionally, in step S4, the water intake is adjusted according to the load weight of the dehydration barrel and the degree of eccentricity of the overloaded area, and the water intake is proportional to the load weight and the degree of overload of the overloaded area.

[0028] In the above scheme, the washing machine adjusts the water intake in step S4 according to the load weight and load distribution in the dehydration barrel. The unbalanced load in the dehydration barrel is easier to shake off under the appropriate water intake, thereby improving the efficiency of shaking off the unbalanced load in the dehydration barrel during the restart process.

[0029] Optionally, in step S4, the motor speed after restarting is adjusted according to the load weight and water intake of the dehydration barrel. The greater the water intake, the greater the peak value of the restarted motor speed.

[0030] In the above scheme, in step S4, when the dehydration barrel is restarted, the washing machine adjusts the motor speed after restarting according to the distribution position of the unbalanced load and the amount of water inflow, and according to the load weight and water inflow of the dehydration barrel. The greater the water inflow, the greater the peak value of the restart motor speed, thereby generating a rotation strategy that is easier to achieve the shaking-off of the unbalanced load, thereby improving the shaking-off effect of the dehydration barrel on the unbalanced load during the restart process, and thereby improving the dehydration efficiency.

[0031] Optionally, after step S4, the method further includes:

[0032] Step S5: If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity level, the dehydration barrel is restarted in the non-eccentric load area to continue the dehydration process.

[0033] In the above scheme, after the washing machine completes step S4, the performance load of the dehydration barrel still exceeds the preset eccentricity, which may be caused by the water not being dried in step S4. The washing machine senses the eccentric position of the dehydration barrel and restarts at the non-eccentric position to shake off the eccentric load.

[0034] Optionally, step S5 is looped, and the number of times the eccentric load of the dehydration tub exceeds a preset eccentricity is detected. If it is determined that the number of times the eccentric load exceeds the preset eccentricity is greater than a preset number N, step S6 is performed, and the washing machine issues an alarm. In the above embodiment, after the washing machine completes step S5, if the dehydration tub collision rod is still detected during a subsequent dehydration process, the eccentric load of the dehydration tub exceeding the preset eccentricity may be caused by an uneven floor, etc. In this case, the washing machine issues an alarm, reminding the user to manually troubleshoot the cause of the eccentric load during the dehydration process to prevent the dehydration tub eccentricity from affecting the dehydration efficiency of the washing machine.

[0035] A washing machine applies the above-mentioned washing machine dehydration control method.

[0036] The present invention has at least the following beneficial effects:

[0037] 1. The present invention discloses a dehydration control method for a washing machine. After starting the dehydration program, the washing machine obtains whether the eccentric load of the dehydration barrel exceeds a preset eccentricity value. If so, the rotation speed of the dehydration barrel is adjusted and the dehydration program is continued. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to rotate away from the eccentric position, and the dehydration barrel is restarted at the non-eccentric position to continue the dehydration process. The present invention adopts a multi-stage correction program to shake out different degrees of eccentricity in the washing and dehydration barrels, thereby improving the dehydration efficiency while reducing the energy consumption of the washing machine.

[0038] 2. The washing machine dehydration control method disclosed in the present invention divides the radial plane of the dehydration barrel into multiple areas symmetrical with the center of the dehydration barrel axis, and defines the area where the dehydration barrel is overloaded as the overload area. When the washing machine performs the dehydration program, the overload area where the dehydration barrel is eccentric is obtained, the dehydration barrel is controlled to turn away from the overload area, and the dehydration barrel is restarted in the non-overload area, thereby improving the efficiency of detecting the overload position of the dehydration barrel.

[0039] 3. The washing machine dehydration control method disclosed in the present invention records the startup data of the dehydration barrel under different loads and different offset load distributions, and uses the recorded startup data to adjust the startup position and speed of the dehydration barrel in the subsequent process, thereby improving the correction efficiency of the dehydration barrel when the dehydration barrel is restarted in a non-offset load position, thereby improving the dehydration efficiency of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of a washing machine according to the present invention from a top view;

[0041] Figure 2 This is a flow chart of the washing machine dehydration control method of the present invention;

[0042] Figure 3 For the present invention Figure 2 The washing machine dehydration control method is further shown in the flowchart;

[0043] Figure 4 For the present invention Figure 2 Specific flow chart of the washing machine dehydration control method.

[0044] Figure 5 For the present invention Figure 2 The washing machine dehydration control method is further described in a flow chart.

[0045] Figure 6 For the present invention Figure 3 Specific flow chart of the washing machine dehydration control method.

[0046] In the figure: 1. washing machine; 2. spin tub; 21. position sensor; 3. sensing rod. DETAILED DESCRIPTION

[0047] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" 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 direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0050] like Figures 2 to 6 As shown, the washing machine dehydration control method of the present invention includes the following steps:

[0051] S1, start dehydration program;

[0052] S2, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel and continuing the dehydration process;

[0053] S3. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel is obtained, the dehydration barrel is controlled to rotate away from the eccentric load position, and the dehydration barrel is restarted at the non-eccentric load position to continue the dehydration process.

[0054] After the washing machine starts the dehydration program, it performs step S2 to determine whether the eccentric load of the dehydration barrel exceeds the preset eccentricity. If so, the speed of the dehydration barrel is adjusted and the dehydration program is continued. By adjusting the speed of the dehydration barrel, the load distribution position in the dehydration barrel is changed, and the eccentric load of the clothes is corrected, thereby preventing the dehydration barrel from continuing to hit the rod during the subsequent dehydration process. It is well known to those skilled in the art that there are many reasons for the correction of the dehydration of the washing machine during the dehydration program, the most important of which is the uneven load distribution in the dehydration barrel. Generally speaking, the method of adjusting the speed of the dehydration barrel in step S2 can correct most problems of uneven load distribution. After the washing machine completes step S2, the clothes are The machine still detects that the eccentric load of the dehydration barrel exceeds the preset eccentricity, indicating that step S1 has not shaken off the eccentric load. At this time, step S3 is performed: if it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to turn away from the eccentric position, and the dehydration barrel is restarted at the non-eccentric position to continue the dehydration program. When the dehydration barrel is restarted at the non-eccentric position, the difference between the load in the dehydration barrel and the movement speed of the dehydration barrel is used to further balance the distribution position of the eccentric load. The dehydration control method of the washing machine disclosed in the present invention adopts a multi-stage correction program to shake off the eccentric loads of the dehydration barrel to different degrees, thereby improving the dehydration efficiency and reducing the energy consumption of the washing machine.

[0055] Specifically, step S1 starts the dehydration program and obtains the eccentricity of the eccentric load of the dehydration barrel. When the eccentric load of the dehydration barrel exceeds the preset eccentricity, part of the reason is that the rotation speed of the dehydration barrel is too fast, and the load is tightly attached to the barrel wall under the action of centripetal force. After that, the position of the load tightly attached to the barrel wall is uneven, resulting in uneven force at various parts of the dehydration barrel, and thus eccentricity occurs.

[0056] After the washing machine completes step S2, if it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity level, the eccentric position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to turn away from the eccentric position, and the dehydration barrel is restarted in the non-eccentric position. The speed difference between the dehydration barrel and the load during the restart is used to shake off the load and then continue the dehydration program.

[0057] Furthermore, in step S2, the rotation speed of the spin tub is adjusted to redistribute the load distribution within the spin tub. Specifically, the washing machine controls the motor to adjust the rotation speed, which may include increasing or decreasing the rotation speed. Whether the washing machine rotates faster or slower depends on the real-time rotation speed of the spin tub when the eccentricity is detected. When the real-time rotation speed is greater than the set rotation speed, the washing machine controls the motor to increase the rotation speed; when the real-time rotation speed is less than the set rotation speed, the washing machine controls the motor to decrease the rotation speed. The load within the spin tub is affected by the inertial force of the spin tub's rotation speed before the adjustment, thereby changing its distribution and achieving a balanced load distribution within the spin tub. It should be noted that the set rotation speed is based on the critical speed at which a load of corresponding weight in the spin tub clings to the tub wall under the action of centripetal force. In particular, the mass of the concentrated load area is large, and the inertia affected by the rotation speed is also large. Therefore, when the washing machine detects that the eccentric load within the spin tub exceeds a preset eccentricity, the uneven load distribution within the spin tub can be corrected by adjusting the spin tub's rotation speed.

[0058] Furthermore, in step S2, the number of times the eccentric load of the dehydration barrel exceeds the preset eccentricity is obtained multiple times. If so, the rotation speed of the dehydration barrel is adjusted and the dehydration program is continued to be executed to prevent the eccentric load of the dehydration barrel from exceeding the preset eccentricity due to other factors, such as jamming of the motor rotation, etc., to improve the detection accuracy.

[0059] Step S2 includes the following steps:

[0060] S21, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel to continue the dehydration process;

[0061] S22. Determine the number n of times the eccentric load of the dehydration barrel exceeds the preset eccentricity, and determine n≥N. If yes, execute step S3; if not, execute step S21.

[0062] Specifically, in this embodiment, step S21 includes:

[0063] S210: The washing machine detects the load weight in the dehydration tub and sets the set speed of the dehydration tub according to the load weight, and then proceeds to step S211;

[0064] S211: When the washing machine determines that the eccentric load of the dehydration tub exceeds a preset eccentricity level, the washing machine compares the real-time speed when the eccentric load of the dehydration tub exceeds the preset eccentricity level with the set speed. If the real-time speed is less than the set speed, the washing machine proceeds to step S212; if the real-time speed is greater than the set speed, the washing machine proceeds to step S213.

[0065] S212: The washing machine controls the spin tub to reduce its speed, continues to detect whether the eccentric load of the spin tub exceeds a preset eccentricity, and records the number of times the eccentric load of the spin tub exceeds the preset eccentricity. When the number of times the spin tub load exceeds the eccentricity is less than the set number N, the process proceeds to step S211; when the number of times the spin tub load exceeds the eccentricity exceeds the set number, the process proceeds to step S214.

[0066] S213: The washing machine controls the spin tub to increase the speed, continues to determine whether the eccentric load of the spin tub exceeds a preset eccentricity, and records the number of times the spin tub hits the rod n. When the number of times n hits the rod is lower than the set number N, proceeds to step S214;

[0067] S214: proceed to step S22.

[0068] Furthermore, the number of times is set to 5 times.

[0069] In step S3, the overload position of the dehydration barrel when it is eccentric is obtained, the dehydration barrel is controlled to rotate away from the overload position, and the dehydration barrel is restarted in the non-overload position to continue the dehydration program. It should be noted that the overload position described in step S3 is: after the dehydration barrel is controlled to slowly end, the position where the dehydration barrel is offset to the maximum extent, after the dehydration barrel is controlled to rotate away from the eccentric position, the dehydration barrel is restarted in the non-overload position to further correct the overload and improve the dehydration efficiency of the washing machine.

[0070] Furthermore, the washing machine divides the radial plane of the dehydration barrel into a plurality of areas symmetrical with the axis center of the dehydration barrel, and the area where the dehydration barrel is overloaded is defined as the overloaded area. In step S3, the washing machine detects the overloaded area of ​​the dehydration barrel, reduces the rotation speed of the dehydration barrel to end the dehydration process, and turns the overloaded position away from the overloaded area, and restarts the dehydration barrel in the non-overloaded area to continue the dehydration program. Specifically, the washing machine records the position of the dehydration barrel when the eccentric load exceeds a preset eccentricity, and uses the position where the eccentric load exceeds the preset eccentricity as the overloaded position of the load, and then uses the area where the overloaded position is located as the overloaded area. The load in the overloaded area is restarted in the non-overloaded area, which is beneficial for the washing machine to shake out the load in the dehydration barrel again during the restart process.

[0071] It should be noted that, for example, the radial plane of the dehydration barrel is divided into n centrally symmetrical areas. When the washing machine detects that the overload position is in the first area, the first area is defined as the overload area, the dehydration barrel is controlled to rotate away from the overload area, the overload area of ​​the dehydration barrel is stopped in the non-overload area, and restarted in the non-overload area. After defining multiple areas on the axial plane of the dehydration barrel, it is helpful for the washing machine to determine the overload position, thereby improving the correction efficiency of the dehydration barrel.

[0072] Furthermore, four regions are defined on the radial plane of the dehydration barrel and are named as the first region, the second region, the third region and the fourth region (see Figure 1 ), for example, the first area is the biased load area, and the other areas are non-biased load areas; when the first area and the second area are biased load areas, the third area and the fourth area are non-biased load areas.

[0073] It should be noted that there are various ways for the washing machine to determine whether the eccentric load of the dehydration barrel exceeds the preset eccentricity. Specifically, in this embodiment, the washing machine installs a stop switch between the dehydration barrel and the outer shell, including a switch body and a rotatable sensing rod. When the dehydration barrel is overloaded, the dehydration barrel will shift in the overload direction. During the dehydration process, the dehydration barrel will hit the sensing rod, causing the switch to open or close, and then transmit the overload information of the dehydration barrel to the washing machine, thereby realizing the detection of the eccentric load of the dehydration barrel exceeding the preset eccentricity; or, the washing machine realizes the detection of the eccentric load of the dehydration barrel exceeding the preset eccentricity by installing a sensor.

[0074] Furthermore, as an implementation method of this embodiment, the washing machine detects the degree of eccentric load of the dehydration barrel through the stop switch. When the load in the dehydration barrel is unevenly distributed, resulting in multiple overload positions, the eccentric load of the dehydration barrel exceeds the preset eccentricity and the overload amount of the overload position cannot be accurately detected, so that the multiple eccentric positions in the dehydration barrel cannot be accurately detected by the dehydration barrel collision rod, which causes the inaccurate judgment of the eccentric position when the dehydration barrel is restarted, affecting the load shaking efficiency. In this embodiment, the area where the overload distribution position is located is detected by a sensor connected to the washing machine for communication. Specifically, the washing machine is provided with a sensor in the axial direction, and the sensor is used to detect the real-time position of the radial plane of the dehydration barrel.

[0075] As another implementation method of this embodiment, the startup data of the dehydration barrel when it is started in different areas is detected, and the load imbalance area and the degree of imbalance are judged according to the size and size difference of the startup data of the dehydration barrel in different areas, and the non-biased position of the dehydration barrel or the restart position of the non-biased area is set; specifically, the rotation speed of the dehydration barrel is reduced to end the dehydration process, which is divided into a detection stage and a termination stage. During the detection stage, the dehydration barrel stops the dehydration at different positions or different areas, and records the startup data when it is started at different positions or different areas; during the termination stage, according to the startup data of different positions or different areas, the dehydration barrel is stopped to the non-biased position where the load is most easily shaken when restarted, thereby improving the load shaking efficiency.

[0076] Furthermore, each time the washing machine performs a spin cycle, it records the startup data of different overload areas and overload degrees. Based on the startup data of multiple runs, it generates a speed strategy for when the spin drum is started in the non-overload position during the next spin cycle. Based on the correction effect of the spin drum after multiple restarts in the non-overload position recorded by the washing machine, it generates the non-overload position with the best correction effect, thereby improving the correction safety rate of the washing machine.

[0077] The rotation speed strategy is to generate a rotation speed curve when the dehydration barrel is restarted according to the load weight of the dehydration barrel and the degree of overload in the overload area.

[0078] Further, such as Figure 3 、 Figure 6 As shown, after step S3, the following steps are further included:

[0079] Step S4: If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the dehydration barrel is obtained, and after adding water to the dehydration barrel, the dehydration barrel is controlled to move away from the eccentric load area, and the dehydration barrel is restarted in the non-eccentric load area to continue the dehydration process. At this time, the adjustment sequence of the washing machine after detecting that the dehydration barrel hits the rod is:

[0080] S1, start dehydration program;

[0081] S2. Determine whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level. If so, adjust the speed of the dehydration barrel and continue the dehydration process.

[0082] S3. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel is obtained, the dehydration barrel is controlled to move away from the eccentric load position, and the dehydration barrel is restarted at the non-eccentric load position to continue the dehydration process;

[0083] S4. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the dehydration barrel when it is eccentric is obtained, and after adding water to the dehydration barrel, the dehydration barrel is controlled to move away from the eccentric load area, and the dehydration program is continued after the dehydration barrel is restarted in the non-eccentric load area.

[0084] Furthermore, in step S4, the water intake is adjusted according to the load weight of the dehydration barrel and the degree of overloading in the overloaded area. The water intake is proportional to the load weight and the degree of overloading in the overloaded area. The amount of water added in the dehydration barrel is not only related to the distribution position of the load, but also related to the load weight in the dehydration barrel. The greater the load weight in the dehydration barrel, the greater the amount of water added in the dehydration barrel; the smaller the load weight in the dehydration barrel, the smaller the amount of water added in the dehydration barrel; the appropriate water intake is matched according to the load situation in the dehydration barrel to prevent the load from being unable to be shaken off due to too little water intake when the load is too heavy; it also prevents excessive water intake when the load is not heavy, causing waste of water resources, and improves the effect of shaking off the load during the restart of the dehydration barrel.

[0085] Furthermore, in step S4, the motor speed after restart is adjusted according to the load weight and water intake of the dehydration barrel. The greater the water intake, the greater the peak speed of the restarted motor. When the dehydration barrel is restarted, the motor speed is combined with the load weight and water intake to generate a rotation strategy during the restart process, thereby improving the load shaking effect during the restart of the dehydration barrel.

[0086] Furthermore, the rotation strategy is to increase or decrease the rotation speed of the dehydration barrel during the startup process, combined with the rotation data of different load conditions and different starting positions of the dehydration barrel; it should be noted that reducing the rotation speed of the dehydration barrel includes restarting the load position or load area of ​​the dehydration barrel, and then rotating the unbalanced position to a position that is easy to shake off the load according to the rotation number of the dehydration barrel and restarting; thereby ensuring the load shaking effect of the dehydration barrel in step S5.

[0087] Furthermore, after completing step S4, step S5 is also included: if it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity level, the eccentric load area of ​​the load is sensed, and the dehydration barrel is restarted in the non-eccentric load area.

[0088] Further, such as Figure 4 As shown, in step S5, the spin tub is restarted in a non-eccentrically loaded area to shake out the eccentric load. If the eccentric load of the spin tub exceeds a preset eccentricity, step S5 is repeated and the number of times the eccentric load of the spin tub exceeds the preset eccentricity is detected. If the number of times the eccentric load exceeds the preset eccentricity is greater than a preset number N, step S6 is performed: the spin cycle is terminated and the washing machine issues an alarm. In this case, the spin tub's collision with the rod during the spin process is likely due to an uneven floor surface, etc. The washing machine issues a warning to the user, prompting the user to manually troubleshoot the cause of the eccentric load in the spin tub, thereby improving the spin tub's dehydration efficiency and enhancing the user experience.

[0089] Wherein, step S5 includes:

[0090] S51, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel to continue the dehydration process;

[0091] S52. Determine the number of times n that the eccentric load of the dehydration barrel exceeds the preset eccentricity, and determine n≥N. If yes, execute step S6; if not, execute step S51.

[0092] At this time, the adjustment sequence of the washing machine after detecting the collision of the dehydration tub is:

[0093] S1, start dehydration program;

[0094] S2, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel and continuing the dehydration process;

[0095] S3. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel is obtained, the dehydration barrel is controlled to move away from the eccentric load position, and the dehydration barrel is restarted at the non-eccentric load position to continue the dehydration process;

[0096] S4. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the dehydration barrel is obtained, and after adding water to the dehydration barrel, the dehydration barrel is controlled to move away from the eccentric load area, and the dehydration barrel is restarted in the non-eccentric load area to continue the dehydration process;

[0097] S5. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the load is sensed, and the dehydration barrel is restarted in the non-eccentric load area to shake out the eccentric load. The number of times the eccentric load of the dehydration barrel exceeds the preset eccentricity is detected, and it is determined whether the number of times the eccentric load exceeds the preset eccentricity is greater than a preset number N. If so, step S6 is executed; if not, step S5 is looped.

[0098] S6: The dehydration process ends and the washing machine sounds an alarm.

[0099] like Figure 1 As shown, as one embodiment of the present invention, a washing machine 1 includes a spin tub 2 and a housing. The spin tub 2 can be the outer tub of a twin-tub washing machine or the spin tub 2 of a single-tub washing machine. The spin tub 2 is open upward and is rotatable along its axis. A sensing rod 3 is disposed between the spin tub 2 and the housing, and a certain distance is set between the sensing rod 3 and the spin tub 2. When the spin tub 2 strikes the sensing rod 3 during the spin cycle of the washing machine 1, it is determined that the eccentric load of the spin tub exceeds a preset eccentricity, and the washing machine dehydration control method of the present invention is then executed to correct the eccentricity.

[0100] Furthermore, a position sensor 21 is provided at the upper end of the axis of the washing machine 1, and the position sensor 21 is used to detect the real-time position of the radial plane of the dehydration barrel 2, and judge the overload area of ​​the dehydration barrel 2 and the degree of eccentricity of the overload area according to the angle formed by the radial plane of the dehydration barrel 2 and the radial plane at the initial position.

[0101] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine dehydration control method, characterized in that: The following steps are involved: S1, start dehydration program; S2, determining whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level, and if so, adjusting the speed of the dehydration barrel and continuing the dehydration process; S3. If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load position of the dehydration barrel is obtained, the dehydration barrel is controlled to rotate away from the eccentric load position, and the dehydration barrel is restarted at the non-eccentric load position to continue the dehydration process.

2. A washing machine dehydration control method according to claim 1, characterized in that: The radial plane of the dehydration barrel is divided into a plurality of regions symmetrical with respect to the axis of the dehydration barrel, and the region where the dehydration barrel is located at an eccentric load position is defined as an eccentric load region; In step S3, the eccentric position of the dehydration barrel is obtained by obtaining the area where the eccentric position of the dehydration barrel is located when the dehydration barrel is eccentric; Preferably, the radial plane of the dehydration barrel is divided into four areas symmetrical about the axis of the dehydration barrel.

3. A washing machine dehydration control method according to claim 2, characterized in that: A sensor is provided at the axis position of the washing machine relative to the dehydration barrel, and the sensor is used to detect the real-time position of the radial plane of the dehydration barrel; In step S3, the real-time position of the radial plane when the dehydration barrel is eccentric is obtained, and the eccentricity of the dehydration barrel and the degree of eccentricity of the eccentric load area are determined according to the angle formed by the radial plane at the real-time position and the radial plane at the initial position; Preferably, in step S3, it is determined multiple times whether the eccentric load of the dehydration barrel exceeds a preset eccentricity level. If so, the eccentric load position of the dehydration barrel when it is eccentric is obtained.

4. A washing machine dehydration control method according to claim 3, characterized in that: In step S3, during each dehydration process, if yes, the startup data of different overload areas and overload degrees are recorded. The startup data includes the electric speed and the rotation data of the dehydration barrel at different speeds, and the speed strategy for starting the dehydration barrel in the non-overload position during the next dehydration process is generated.

5. A washing machine dehydration control method according to any one of claims 2 to 4, characterized in that: After step S3, the following steps are further included: Step S4: If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity, the eccentric load area of ​​the dehydration barrel when it is eccentric is obtained, and after adding water to the dehydration barrel, the dehydration barrel is controlled to move away from the eccentric load area, and the dehydration program is continued after the dehydration barrel is restarted in the non-eccentric load area.

6. A washing machine dehydration control method according to claim 5, characterized in that: In step S4, the water intake is adjusted according to the load weight of the dehydration barrel and the eccentricity of the overloaded area. The water intake is proportional to the load weight and the overloaded area.

7. A washing machine dehydration control method according to claim 6, characterized in that: In step S4, the motor speed after restarting is adjusted according to the load weight and water intake of the dehydration barrel. The greater the water intake, the greater the peak value of the restarted motor speed.

8. A washing machine dehydration control method according to claim 7, characterized in that: After step S4, the method further includes: Step S5: If it is determined that the eccentric load of the dehydration barrel still exceeds the preset eccentricity level, the dehydration barrel is restarted in the non-eccentric load area to continue the dehydration process.

9. A washing machine dehydration control method according to claim 8, characterized in that: The step S5 is looped and the number of times the eccentric load of the dehydration tub exceeds the preset eccentricity is detected. When it is determined that the number of times the preset eccentricity is exceeded is greater than the preset number N, the step S6 is executed to end the dehydration program and the washing machine issues an alarm.

10. A washing machine, characterized in that: A washing machine dehydration control method according to any one of claims 1 to 9 is used.

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