Washing machine control method
By setting multiple dehydration stages in the washing machine and gradually increasing the rotation speed, combined with the shaking stage, the problems of severe wall attachment and difficulty in shaking during the dehydration process are solved, and a more uniform and efficient drying effect is achieved.
Patent Information
- Application Number
- CN202011285099.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-11-17
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2040-11-17
AI Technical Summary
During the dehydration process of existing washing machines, as the dehydration speed increases, the moisture flows away from the inner barrel and the outer barrel, resulting in serious adhesion, increasing the difficulty of shaking, occupying drying time, resulting in uneven drying.
Multiple dehydration stages are used to gradually increase the preset maximum speed, combined with the shaking stage, reduce the shaking difficulty, reduce the shaking time, and improve drying uniformity.
Through the incremental dehydration speed and setting of the jitter stage, the difficulty of jitter is reduced, the drying time is reduced, and the uniformity and efficiency of drying are improved.
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Figure CN114507969B_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a washing machine control method. Background Art
[0002] During the dehydration process of the washing machine, as the dehydration speed increases, the water will gradually separate from the load and flow between the inner and outer barrels. The higher the dehydration speed, the more serious the wall adhesion, which seriously increases the difficulty of shaking out. The existing dehydration program and shaking out program cannot meet the requirements. The difficulty of shaking out is relatively large, which seriously takes up the drying time and causes the water to not be dried or the water is still not shaken out when the drying is completed, resulting in uneven drying. Summary of the invention
[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end,
[0004] According to an embodiment of the present disclosure, a washing machine control method is provided, including a drying program S2 and a dehydration program S1 before drying;
[0005] In the dehydration program S1, n dehydration stages are set, and the preset maximum speeds of the n dehydration stages are gradually increased. The dehydration program S1 includes at least two dehydration stages, namely a first dehydration stage and a second dehydration stage. The dehydration program S1 includes the following steps:
[0006] S11: Entering the first stage of dehydration, controlling the speed of the inner drum to increase from a certain speed to a first preset maximum speed N1;
[0007] S12: Entering the shaking-off stage, the shaking-off lasts for t1 time;
[0008] S13: Entering the second stage of dehydration, controlling the speed of the inner barrel to increase from a certain speed to a second preset maximum speed N2, and continuously rotating at the second preset maximum speed N2 for a time t2, wherein N2>N1;
[0009] S14: Entering the shaking-off phase, the shaking-off lasts for t3 time.
[0010] In the dehydration program S1, multiple dehydration stages are set, and the preset maximum speeds of the multiple dehydration stages are set to gradually increase, so that each time the wall adhesion is not serious and can be shaken off, which can reduce the difficulty of shaking off, reduce the shaking off time, reduce the time occupied by shaking off in drying, and improve the uniformity of drying.
[0011] According to an embodiment of the present disclosure, the drying procedure S2 includes the following steps:
[0012] S21: Drying;
[0013] S22: Obtain the clothing temperature T1, compare the clothing temperature T1 with the preset clothing temperature T0. When T1≥T0, execute S23. When T1<T0, continue drying until T1≥T0, and then execute S23;
[0014] S23: Determine whether a gear down occurs during the process of the rotation speed rising to the preset maximum rotation speed during the execution of the dehydration program S1. If so, execute the dehydration stage in the drying program. If not, execute S24;
[0015] S24: Obtain the clothing weight W1, compare the clothing weight W1 with the dry cloth weight W0 of the clothing to obtain the current moisture content R1 of the clothing, compare the current moisture content of the clothing with the preset moisture content R0. When R1>R0, execute the dehydration stage in the drying program. If not, continue drying until the drying program ends.
[0016] Setting the dehydration stage during the drying process can reduce the moisture content in the clothing and improve the drying efficiency. Since the temperature of the inner barrel is relatively high, blindly increasing the rotation speed is a very high test of the reliability of the washing machine. Through the above two judgments, the stability of the washing machine can be greatly improved.
[0017] According to an embodiment of the present disclosure, the dehydration stage in the drying program is specifically: controlling the rotation speed of the inner barrel to rise from a certain rotation speed to the preset maximum drying dehydration rotation speed N3, and continuously rotating at the preset maximum drying dehydration rotation speed N3 for a time t4.
[0018] According to an embodiment of the present disclosure, a third-level dehydration stage is set before the first-level dehydration stage. In the third-level dehydration stage, control the rotation speed of the inner barrel to rise from a certain rotation speed to the third preset maximum rotation speed N0, and continuously rotate at the third preset maximum rotation speed N0 for a time t0, where N0<N1.
[0019] Setting the third-level dehydration stage can remove a part of the moisture in the load, lay a foundation for increasing the rotation speed in the subsequent first-level dehydration stage, and the rotation speed is relatively low, so no large vibration noise will be generated.
[0020] According to an embodiment of the present disclosure, in steps S12 and S14, the shaking and loosening is as follows: rotate forward one circle, without pausing, immediately reverse, reverse one circle, without pausing, immediately rotate forward, which can overcome inertia and generate acting forces in different directions between the clothes and the barrel wall, resulting in the load attached to the barrel wall falling quickly, saving the time for shaking and loosening.
[0021] According to an embodiment of the present disclosure, the specific implementation manner of the shaking and loosening is: when one circle is about to end, immediately start in the opposite direction.
[0022] According to an embodiment of the present disclosure, the dehydration program S1 is the last dehydration program before drying.
[0023] According to an embodiment of the present disclosure, the third preset maximum speed N0 is 350-500 rpm, the first preset maximum speed N1 is 700-900 rpm, and the second preset maximum speed N2 is the nominal speed of the washing machine.
[0024] According to an embodiment of the present disclosure, the preset maximum speed N3 for drying and dehydration is the nominal speed of the washing machine.
[0025] According to an embodiment of the present disclosure, t3>t1, and the preset moisture content R0 is 40-50%. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 is a flow chart of a dehydration procedure according to an embodiment of the present disclosure;
[0028] Figure 2 is a flow chart of a dehydration procedure according to an embodiment of the present disclosure;
[0029] Figure 3 is a flow chart of a drying procedure according to an embodiment of the present disclosure;
[0030] Figure 4 is a speed curve of a dehydration process according to an embodiment of the present disclosure;
[0031] Figure 5 It is a rotation speed curve of the dehydration and drying process according to an embodiment of the present disclosure. DETAILED DESCRIPTION
[0032] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.
[0033] The present invention proposes a washing machine control method, the washing machine includes an inner tub and an outer tub, Figure 1-Figure 5 The control method of the washing machine includes a drying program S2 and a dehydration program S1 before drying. The dehydration program S1 is executed first, and then the drying program S2 is executed for drying; specifically, the dehydration program S1 can be the last dehydration program before drying.
[0034] In the dehydration program S1, n dehydration stages are set, and the preset maximum speed of the n dehydration stages is gradually increased. The dehydration program S1 includes at least two dehydration stages, namely the first dehydration stage and the second dehydration stage. Figure 1 and Figure 4 , the dehydration procedure S1 comprises the following steps:
[0035] S11: Entering the first stage of dehydration, controlling the speed of the inner drum to increase from a certain speed to a first preset maximum speed N1;
[0036] S12: Entering the shaking-off stage, the shaking-off lasts for t1 time;
[0037] S13: Entering the second stage of dehydration, controlling the speed of the inner barrel to increase from a certain speed to a second preset maximum speed N2, and continuously rotating at the second preset maximum speed N2 for a time t2, wherein N2>N1;
[0038] S14: Entering the shaking-off phase, the shaking-off lasts for t3 time.
[0039] In the dehydration program S1, multiple dehydration stages are set, and the preset maximum speeds of the multiple dehydration stages are set to gradually increase, so that each time the wall adhesion is not serious and can be shaken off, which can reduce the difficulty of shaking off, reduce the shaking off time, reduce the time occupied by shaking off in drying, and improve the uniformity of drying.
[0040] refer to Figure 2 and Figure 4 The dehydration program S1 may include at least three dehydration stages. A third dehydration stage is set before the first dehydration stage. In the third dehydration stage, the inner barrel speed is controlled to increase from a certain speed to a third preset maximum speed N0, and the inner barrel rotates continuously at the third preset maximum speed N0 for t0 time, wherein N0 <N1。
[0041] Specifically, in each dehydration stage, the inner barrel speed may be continuously upgraded during the process of increasing from a certain speed to the preset maximum speed of the dehydration stage, or there may be a partial downshift during the upshift process and finally increase to the preset maximum speed of the dehydration stage, and the time from a certain speed to the preset maximum speed is set according to needs.
[0042] Setting the third stage of dehydration can remove part of the water in the load, laying the foundation for increasing the speed in the subsequent first stage of dehydration, and the speed is relatively low, which will not produce large vibration noise. When the load is small, the clothes are basically attached to the wall. As the speed increases, the water is retained and the eccentricity becomes smaller. At this time, the vibration noise is controllable, and the third stage of dehydration can be omitted, so only the first and second stages of dehydration can be retained.
[0043] Specifically, the third preset maximum speed N0 can be 350-500rpm, the purpose is to remove most of the moisture in the clothes. For cotton loads, the moisture content of the clothes is reduced from more than 200% to about 100%. Most of the resonance area of the washing machine is between 200-300rpm, so it is not easy to stay during the speed increase process, and it should pass quickly. The time t0 for continuous rotation at the third preset maximum speed N0 can be 30s, which can be set according to needs.
[0044] The first preset maximum speed N1 can be 700-900rpm, the purpose is to dehydrate part of the water in the clothes again. For cotton load, the moisture content is reduced from about 100% to about 70%. After the first dehydration stage is completed, the shaking stage is entered. The continuous shaking time t1 can be 1-2min. Setting the shaking can quickly shake the clothes and enter the next dehydration stage without delaying time.
[0045] The second preset maximum speed N2 can be the nominal speed of the washing machine. The purpose is to dehydrate as much as possible and reduce the drying time. After the second dehydration stage is completed, the shaking stage begins. Since the second preset maximum speed N2> the first preset maximum speed N1, the clothes after dehydration at the preset maximum speed N2 stick to the wall more seriously, so the shaking time t3> t1 is set. The shaking time t3 can be set to 3-4 minutes. The shaking can quickly shake the clothes and make sufficient preparations for fast drying. The time t2 rotating at the second preset maximum speed N2 can be set to be greater than t0, of course, it can also be less than or equal to t0, and the specific value of t2 can be set as needed.
[0046] After the first and second dehydration stages are completed, the clothes are severely attached to the wall, so a shake-out is set after the two stages are completed. In step S12 and step S14, the specific shaking-out can be: one round of forward rotation, no pause, and then reverse rotation, one round of reverse rotation, no pause, and then forward rotation. The specific implementation method of shaking-out is: when a round is about to end, start in the opposite direction immediately, increase the starting current, overcome inertia, and generate forces in different directions between the clothes and the barrel wall, causing the load attached to the barrel wall to fall off quickly, saving shaking-out time.
[0047] In the dehydration process, an eccentricity detection is set between two adjacent dehydration stages to ensure that the vibration noise is within a controllable range.
[0048] refer to Figure 3 and Figure 5 , the drying process specifically includes the following steps:
[0049] S21: Drying;
[0050] S22: Obtain the clothing temperature T1, compare the clothing temperature T1 with the preset clothing temperature T0. When T1≥T0, execute S23. When T1<T0, continue drying until T1≥T0, and then execute S23;
[0051] S23: Determine whether a gear down occurs during the process of the dehydration program S1 when the rotational speed rises to the preset maximum rotational speed. If so, execute the dehydration stage during the drying process. If not, execute S24;
[0052] S24: Obtain the clothing weight W1, compare it with the dry cloth weight W0 of the clothing to obtain the current moisture content R1 of the clothing. Compare the current moisture content of the clothing with the preset moisture content R0. When R1>R0, execute the dehydration stage during the drying process. If not, continue drying until the drying program ends.
[0053] Specifically, the preset clothing temperature T0 can be set according to the clothing material and the washing machine material, and the preset moisture content R0 can be 40 - 50%.
[0054] Setting the dehydration stage during the drying process can reduce the moisture content inside the clothing and improve the drying efficiency. Since the inner barrel temperature is relatively high, blindly increasing the rotational speed poses a very high test on the reliability of the washing machine. Through the above two judgments, the stability of the washing machine can be greatly improved.
[0055] The dehydration stage during the drying program is specifically as follows: Control the rotational speed of the inner barrel to rise from a certain rotational speed to the preset maximum drying dehydration rotational speed N3, and continuously rotate at the preset maximum drying dehydration rotational speed N3 for a time t4. Among them, the preset maximum drying dehydration rotational speed N3 is the nominal rotational speed of the washing machine, and t4 can be greater than t0. Of course, it can also be less than or equal to t0, and the specific value of t4 can be set according to needs.
[0056] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 therefore should not be construed as a limitation of the present invention.
[0058] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.
[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A washing machine control method, characterized in that, it includes a drying program S2 and a dehydration program S1 before drying; n dehydration stages are set in the dehydration program S1, and the preset maximum speeds of the n dehydration stages gradually increase. At least two dehydration stages are included in the dehydration program S1, namely the first-stage dehydration stage and the second-stage dehydration stage. The dehydration program S1 includes the following steps: S11: Enter the first-stage dehydration stage, and control the rotation speed of the inner tub to increase from a certain speed to the first preset maximum speed N1; S12: Enter the fluffing stage and continue fluffing for t1 time; S13: Enter the second-stage dehydration stage, control the rotation speed of the inner tub to increase from a certain speed to the second preset maximum speed N2, and continuously rotate at the second preset maximum speed N2 for t2 time, where N2 > N1; S14: Enter the fluffing stage and continue fluffing for t3 time; The drying program S2 includes the following steps: S21: Perform drying; S22: Obtain the clothing temperature T1, compare the clothing temperature T1 with the preset clothing temperature T0. When T1 ≥ T0, execute S23. When T1 < T0, continue drying until T1 ≥ T0, and then execute S23; S23: Judge whether a downshift occurs during the process of the rotation speed rising to the preset maximum speed during the execution of the dehydration program S1. If so, execute the dehydration stage in the drying program. If not, execute S24; S24: Obtain the clothing weight W1, compare the clothing weight W1 with the dry cloth weight W0 of the clothing, obtain the current moisture content R1 of the clothing, compare the current moisture content of the clothing with the preset moisture content R0. When R1 > R0, execute the dehydration stage in the drying program. If not, continue drying until the drying program ends.
2. The washing machine control method according to claim 1, characterized in that, the dehydration stage in the drying program is specifically: control the rotation speed of the inner tub to increase from a certain speed to the preset maximum drying dehydration speed N3, and continuously rotate at the preset maximum drying dehydration speed N3 for t4 time.
3. The washing machine control method according to claim 1, characterized in that, a third-stage dehydration stage is set before the first-stage dehydration stage. In the third-stage dehydration stage, control the rotation speed of the inner tub to increase from a certain speed to the third preset maximum speed N0, and continuously rotate at the third preset maximum speed N0 for t0 time, where N0 < N1.
4. The washing machine control method according to claim 1, characterized in that, in steps S12 and S14, the fluffing is: rotate forward one circle, without pausing, immediately reverse, reverse one circle, without pausing, immediately forward.
5. The washing machine control method according to claim 4, characterized in that, the specific implementation method of the fluffing is: when one circle is about to end, immediately start in the reverse direction.
6. The washing machine control method according to claim 1, characterized in that, the dehydration program S1 is the last dehydration program before drying.
7. The washing machine control method according to claim 3, characterized in that, The third preset maximum speed N0 is 350-500 rpm, the first preset maximum speed N1 is 700-900 rpm, and the second preset maximum speed N2 is the nominal speed of the washing machine.
8. The washing machine control method according to claim 2, It is characterized in that The preset maximum speed N3 for drying and dehydrating is the nominal speed of the washing machine.
9. The washing machine control method according to claim 1, It is characterized in that The t3>t1, and the preset moisture content R0 is 40-50%.
Citation Information
Patent Citations
Washing machine and drying control method and device thereof, and readable storage medium
CN109183351A
Dewatering control method of washing machine
CN111705472A