Control method of washing equipment and washing equipment

Abstract

The washing equipment comprises an impeller and a motor used for providing power for the impeller, a current value I0 is preset, in the water inlet process, the impeller is controlled to rotate, the current value I of the motor is obtained, the obtained current value I and the preset current value I0 are compared, and if I is smaller than or equal to I0, water inlet is controlled to be finished. When water starts to enter, the impeller is in direct contact with a to-be-washed object, and the impeller rotates to drive the to-be-washed object to rotate, so that the load of the motor is large, the load of the motor is reduced along with the increase of the water, the to-be-washed object is lifted up by the water and is gradually separated from the direct contact with the impeller, and the current flowing through the motor is also reduced in the process that the load of the motor is reduced from large to small; according to the washing machine, whether water inflow is completed or not is judged by monitoring the current flowing through the motor, the influence of factors such as the water absorption difference of different to-be-washed objects on the water inflow can be effectively avoided, and it is ensured that water inflow can accurately meet the requirement every time.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular, relates to a control method for a washing device and the washing device. Background Art

[0002] Washing equipment refers to equipment used to wash items to be washed, and in the present invention mainly refers to a pulsator washing machine.

[0003] Current washing machines generally use an automatic water inlet mode, that is, after the washing machine obtains information about the laundry and the washing mode, it controls the start and end of water inlet according to a preset program, without the need for the user to manually control the opening and closing of the water flow.

[0004] Each time the washing machine washes, it will obtain a certain amount of water or water level from the preset program according to the information of the laundry to be washed. That is, each piece of information of the laundry to be washed corresponds to a fixed amount of water or water level. In order to more accurately control the water inlet, the washing machine will obtain more information about the laundry to be washed, such as the weight, size, and material of the laundry to be washed, so as to make judgments on the volume and water absorption rate of the laundry to be washed, and then correct the amount of water and water level to be washed.

[0005] However, in reality, each wash is very complicated. The washing equipment cannot fully reflect the characteristics of the laundry by obtaining the above information of the laundry. For example, in a certain wash, there may be laundry made of pure cotton, linen, and chemical fiber. The proportion of each type of laundry is different in each wash. Even if the user washes laundry of different materials separately, the volume and water absorption rate of laundry of the same material will be different depending on the different processes. The washing machine cannot obtain its accurate information to accurately correct the water inlet volume and water level, resulting in excessive or insufficient water inlet.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The present invention provides a control method for washing equipment and washing equipment, which aims to solve the problem of unreasonable addition of washing water in the washing equipment.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A control method for a washing device, the washing device comprising a pulsator and a motor for providing power to the pulsator, a preset current value I0, during water intake, the pulsator is controlled to rotate, the current value I of the motor is obtained, the obtained current value I is compared with the preset current value I0, and if I≤I0, the water intake is controlled to end.

[0010] Furthermore, the amount of laundry to be washed in the washing device is controlled to be obtained, and the preset current value I0 is controlled to be positively correlated with the obtained amount of laundry.

[0011] Furthermore, the washing device includes a barrel for accommodating objects to be washed, and the controlling the rotation of the pulsator includes:

[0012] The preset water level value H0, during the water inlet process, controls the acquisition of the water level height value H in the barrel, compares the acquired water level height value H with the preset water level value H0, if H≥H0, controls the impeller to rotate.

[0013] Furthermore, the surface of the impeller has a concave-convex structure, and the water level height value corresponding to the highest point of the impeller is H MAX , the preset water level value H0>H max ;

[0014] Preferably, the first water level height value H1 is preset, H1≥4*H MAX , the preset water level value H MAX <H0

[0015] Furthermore, the current value I0' is preset, I0'>I0, when I>I0, the obtained current value I is compared with the preset current value I0', if I≥I0', detergent is added into the barrel, and the impeller is controlled to rotate in one direction.

[0016] Furthermore, the washing device includes a forward driving device for controlling the forward rotation of the pulsator and a reverse driving device for controlling the reverse rotation of the pulsator.

[0017] When I≤I0, after the forward driving program ends and before the impeller stops rotating forward, the reverse driving program is controlled to start;

[0018] When the reverse driving program ends and before the impeller stops rotating in the reverse direction, the forward driving program is controlled to start.

[0019] Furthermore, the preset impeller speed N O After the forward driving program is finished, the impeller speed N is obtained and the obtained speed N is compared with the preset impeller speed N. O The size of O , then control to start the reverse driver;

[0020] After the reverse driving program is completed, the impeller speed N is obtained and compared with the preset impeller speed N. O The size of O , then the control starts the forward driver.

[0021] ​Furthermore, the impeller rotation time t0 is preset, and the timing is started after the forward driving program ends, and the timing time t is obtained, and the obtained time t is compared with the preset time t0. If t≥t0, the reverse driving program is controlled to be turned on;

[0022] After the reverse driving program is finished, the timing is started, the timing time t is obtained, and the obtained time t is compared with the preset time t0. If t≥t0, the forward driving program is controlled to be turned on;

[0023] The preset time t0 is less than the time required for the impeller to stop rotating naturally after the forward driving program and / or the reverse driving program is completed.

[0024] Furthermore, the barrel body and the impeller are controlled to rotate in opposite directions, and when the impeller changes its rotation direction, the barrel body changes its rotation direction simultaneously.

[0025] A washing device is controlled by any of the above-mentioned washing device control methods.

[0026] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0027] 1. When the pulsator rotates, the current value flowing through the motor is monitored. If the current value flowing through the motor drops to the preset current value, it is judged that the water inflow is complete. When the pulsator rotates, the laundry to be washed rotates, and friction is generated between the laundry and the barrel, which makes the load of the motor that provides power to the pulsator larger, and the current flowing through the motor is also larger.

[0028] As the water intake increases, the clothes to be washed are gradually lifted up by the water and have no direct contact with the impeller and the barrel. The friction is reduced, which reduces the load on the motor that powers the impeller. The current flowing through the motor decreases accordingly. When the current value drops to the preset current value, it can be considered that the water intake is sufficient for this washing.

[0029] 2. When the impeller drives the laundry to rotate, there will be greater friction between the laundry and the impeller and the barrel, causing excessive wear on the laundry. The impeller is controlled to rotate only after the water reaches the preset water level, which can utilize the water's ability to lift the laundry, effectively reduce the friction between the laundry and the impeller and the barrel, and reduce the wear on the laundry.

[0030] 3. When adding detergent, control the impeller to rotate in one direction so that the detergent can be evenly added into the barrel and evenly soak the laundry.

[0031] 4. During the washing process, control the impeller to rotate alternately in the forward and reverse directions. When switching between forward and reverse directions, after the motor stops and before the impeller stops rotating due to inertia, start the driver program in the opposite direction of the current rotation direction, which can effectively shorten the time when the impeller rotates at a low speed, thereby exerting a stronger and more continuous effect on the water in the barrel and the laundry, and enhancing the effect of turning the laundry upside down.

[0032] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0034] Figure 1 It is a control method of the washing equipment of the present invention;

[0035] Figure 2 It is another control method of the washing device of the present invention;

[0036] Figure 3 It is another control method of the washing equipment of the present invention;

[0037] Figure 4 It is another control method of the washing equipment of the present invention;

[0038] Figure 5 It is another control method of the washing equipment of the present invention;

[0039] Figure 6 It is another control method of the washing equipment of the present invention;

[0040] Figure 7 This is another control method for the washing equipment of the present invention.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The present invention proposes a Figures 1 to 6 The washing device control method and washing device shown in the figure, the washing device refers to a device used to wash the laundry, and in the present invention mainly refers to a pulsator washing machine, but may also include other types of washing devices that can be controlled using the control method of the present invention.

[0046] The washing device comprises a rotatable barrel body for accommodating objects to be washed, a rotatable impeller is arranged at the bottom of the barrel body, and the washing device also comprises a motor, which is used to provide power to the barrel body and the impeller to rotate the barrel body and the impeller.

[0047] The present invention proposes a control method for a washing device. The water absorption of laundry made of different materials varies greatly, and laundry made of multiple materials may be mixed for washing each time. The preset water inflow or water level in the washing device is difficult to meet the actual needs of washing. In order to solve this problem, Figure 1 As shown, the usage is as follows:

[0048] S1: Start;

[0049] S2: preset current value I0;

[0050] S3: Control the water inflow into the barrel;

[0051] S4: Control the rotation of the impeller;

[0052] S5: Get the current value I of the motor;

[0053] S6: Compare the obtained current value I with the preset current value I0. If I≤I0, execute S7; otherwise, execute S8.

[0054] S7: Control the water inlet to end, start washing, and execute S9;

[0055] S8: Control the water to continue to flow into the barrel, and execute S5;

[0056] S9: End.

[0057] The current value I of the motor refers to the real-time current value when the motor rotates. This current value I can be obtained by directly measuring the current flowing through the motor, or by measuring the total current of the washing device and then subtracting the current consumed by other components. Other components mainly refer to the current consumption of the central control system and other auxiliary devices. This current consumption is relatively stable, so when subtracting the current consumed by other components, the actual consumption can be measured in real time, or a certain average value can be taken after multiple measurements as the average consumption value of other components.

[0058] Controlling the rotation of the impeller in step S4 refers to controlling the impeller to rotate alternately in forward and reverse directions.

[0059] The current value flowing through the motor can be obtained by installing an ammeter or other current-detecting device on the motor circuit.

[0060] When the impeller rotates, it drives the laundry in the barrel to rotate together. At this time, there is no water in the barrel, and the laundry generates friction resistance with the inner wall of the barrel as the impeller rotates. This part of the friction resistance is directly transmitted to the impeller through the laundry, making the motor that provides power for the impeller have a large load.

[0061] In the process of water entering the barrel, as the amount of water increases, the laundry gradually soaks in water and, under the buoyancy of the water, gradually floats off the impeller, reducing direct contact with the impeller. In this process, as the direct contact between the laundry and the impeller decreases, the load on the impeller caused by the laundry also gradually decreases. Furthermore, the load on the motor that provides power to the impeller also decreases, and the current flowing through the motor also decreases. Therefore, the current flowing through the motor can represent the amount of water entering the barrel.

[0062] In the present invention, the completion of water intake is determined by monitoring the current value I flowing through the motor. When the current value I flowing through the motor decreases to a preset current value I0, it indicates that the water entering the washing device has fully soaked and floated the laundry, which is sufficient to complete the washing.

[0063] Using this method to control water inflow can completely avoid the differences in water absorption performance and fluffiness of different laundry items, and add the appropriate amount of water for each wash. And users do not need to manually input a large amount of laundry information for matching water inflow, which is more convenient to use.

[0064] As an embodiment of the present invention, the amount of laundry put in is different, and the amount of water required for washing is also different. The larger the amount of laundry put in, the more water required for washing. The larger the amount of laundry put in and the total amount of water, the greater the load on the impeller. Furthermore, the greater the load on the motor, the greater the current flowing through the motor, that is, the greater the current flowing through the motor when the water intake reaches the amount required for washing. In this way, if a fixed preset current value I0 is set, the water intake control will be inaccurate, and it may even be impossible to stop the water intake.

[0065] To solve the above problems, Figure 2 As shown, the method is as follows:

[0066] Step S3 includes:

[0067] S31: Controlling and obtaining the amount of laundry to be put in;

[0068] S32: Control the preset current value I0 to be proportional to the obtained amount of laundry to be washed, and execute S4;

[0069] The amount of laundry put in may refer to the weight, volume, quantity, etc. of the laundry, wherein the weight of the laundry can be obtained by rotating the barrel before filling with water and calculating the eccentricity of the barrel during rotation; the volume of the laundry can be obtained by setting an infrared sensor in the washing device to detect the height of the laundry in the whole; the quantity of laundry can be obtained by user input and other methods.

[0070] Preferably, the amount of laundry to be washed refers to the weight of the laundry to be washed.

[0071] In this embodiment, as the amount of laundry to be washed increases, the amount of water actually required for washing will also increase accordingly, and the weight of the water and laundry to be washed will also increase the load on the motor that provides power to the pulsator, and the current flowing through the motor will also increase when the amount of water to be washed reaches the amount required for this washing. Controlling the preset current value I0 to be proportional to the amount of laundry to be washed can enable the washing device to accurately determine whether the amount of water to be washed reaches the amount required for washing when washing different amounts of laundry to be washed, thereby greatly improving the accuracy of water intake.

[0072] As another embodiment of the present invention, when the impeller rotates and drives the laundry to rotate, the laundry directly rubs against the inner wall of the barrel, and there is also direct friction between the laundry and the impeller. At this time, because there is no water between the laundry and the barrel and the impeller, it will cause greater wear on the laundry. Especially when there are a lot of laundry, the water intake process is relatively long, which will cause more serious wear on the laundry. To avoid the above problems, Figure 3 As shown, the following method is used:

[0073] Step S3 includes:

[0074] S31: preset water level value H0;

[0075] S32: Control the water inflow into the barrel;

[0076] S33: Control and obtain the water level H in the barrel;

[0077] S34: Compare the obtained water level value H with the preset water level value H0. If H≥H0, execute S4, otherwise execute S35;

[0078] S35: Continue to add water into the barrel and execute S33;

[0079] The water level in the barrel can be obtained by a variety of existing technologies, such as installing an infrared sensor on the upper part of the barrel, and calculating the water level by monitoring the time it takes for the light emitted by the infrared sensor to be reflected back to the infrared sensor after irradiating the water surface.

[0080] After water enters the barrel, the laundry will first absorb water, and the water in the laundry will play a certain lubricating role in the friction between the laundry and the barrel, reducing the wear of the laundry on the barrel when the laundry rotates with the impeller. After the laundry fully absorbs water, water will begin to accumulate on the impeller at the bottom of the barrel, which will lift the laundry, gradually separating the laundry from direct contact with the impeller, reducing the wear of the impeller on the laundry.

[0081] In this embodiment, before the pulsator rotates, part of the water is controlled to enter the barrel body first, so as to avoid excessive wear of the pulsator and the barrel body on the laundry during the water intake process after the pulsator rotates.

[0082] As an implementation of this embodiment, the surface of the impeller has certain undulations to stir the water flow. The undulations on the surface have a certain depth in the direction of the central axis of the barrel body. Starting from the starting height of the water level, the water level height corresponding to the highest point of the impeller is H MAX , the preset water level value H0>H max ;

[0083] Preferably, the first water level height value H1 is preset, H1≥4*H MAX , the preset water level value H MAX <H0

[0084] When water starts to accumulate on the impeller, it will first accumulate in the depressions on the surface of the impeller. At this time, the accumulated water has limited ability to lift the laundry. When the accumulated water is higher than the highest point of the impeller, the accumulated water has a certain ability to lift the laundry.

[0085] The preset water level value H0>H​MAX , the impeller can be controlled to rotate after the accumulated water has a practical lifting effect on the laundry, effectively reducing the wear of the impeller on the laundry.

[0086] Furthermore, after the water level reaches the preset water level value H0, the rotation of the impeller is alternating between forward and reverse directions.

[0087] In this embodiment, the preset water level value is relatively low. When water is inletted, the water level reaches the preset water level value H0 relatively quickly. At this time, controlling the rotation of the impeller is equivalent to starting the washing process in advance. The subsequent water inlet process can be regarded as washing, which effectively shortens the overall washing time.

[0088] As another embodiment of the present invention, in order to complete a part of the washing effect during the water intake process, it is necessary to put detergent into the barrel before the water intake begins. However, if the detergent is directly put on the items to be washed, the detergent will be concentrated in a certain area and cannot be effectively diffused into the entire barrel. In particular, when there is less water in the barrel during the water intake process, the detergent is difficult to flow freely, and the washing effect is poor.

[0089] To solve the above problems, Figure 4 As shown, take the following approach:

[0090] S1: Start;

[0091] S21: Control the addition of detergent into the barrel;

[0092] S22: Control the pulsator to rotate in one direction;

[0093] S23: preset current value I0;

[0094] S31: preset water level value H0;

[0095] S32: Control the water inflow into the barrel;

[0096] S33: stop adding detergent;

[0097] S34: Control and obtain the water level H in the barrel;

[0098] S35: Compare the obtained water level value H with the preset water level value H0. If H≥H0, execute S4, otherwise execute S36;

[0099] S36: Continue to add water into the barrel and execute S34;

[0100] S4: Control the barrel to stop rotating and control the impeller to rotate alternately in forward and reverse directions;

[0101] S5: Get the current value I of the motor;

[0102] S6: Compare the obtained current value I with the preset current value I0. If I≤I0, execute S7; otherwise, execute S8.

[0103] S7: Control the water inlet to end, start washing, and execute S9;

[0104] S8: Control the water to continue to flow into the barrel, and execute S5;

[0105] S9: End.

[0106] In step S22, the motor can provide power for the rotation of the barrel body and the impeller at the same time. The barrel body and the impeller have the same rotation direction and the same rotation speed. The motor can also provide power only for the rotation of the impeller.

[0107] Furthermore, if the impeller and the barrel body rotate simultaneously, the impeller and the barrel body rotate in one direction without changing the rotation direction; if only the impeller rotates, the impeller rotates in one direction without changing the rotation direction.

[0108] Step S21 includes:

[0109] S211: preset current value I0', I0'>I0;

[0110] S212: Obtain the current value I of the motor;

[0111] S213: Compare the obtained current value I with the preset current value I0'. If I≥I0', execute S214; otherwise, execute S33.

[0112] S214: Controlling the addition of detergent into the barrel;

[0113] In step S32 and step S33, the water inlet can be turned on after the detergent is added, or the water inlet can be turned on while the detergent is added, or the water inlet can be turned on first and then the detergent is added. The arrangement can be flexibly performed without significantly affecting the beneficial effects of the present embodiment.

[0114] Furthermore, the detergent added may be laundry liquid, laundry powder, laundry beads or the like directly added into the barrel, or the detergent may be mixed with water at a preset concentration in a detergent adding device and then the detergent solution may be added into the barrel.

[0115] In step S4, the barrel body is controlled to stop rotating, so that the barrel body is stationary, and the unidirectional rotation of the impeller is converted into forward and reverse alternating rotation. When the impeller rotates forward and reverse alternately, a higher cleaning effect can be achieved for the laundry.

[0116] In this embodiment, when adding detergent into the barrel body, the barrel body and the impeller are controlled to rotate simultaneously, so that the detergent can be evenly added into the barrel body without changing the detergent adding position, so that the objects to be washed in the barrel body can be more evenly soaked with the detergent, which can not only improve the washing efficiency and shorten the time for the detergent to diffuse in the barrel body, but also avoid damage to the material of the objects to be washed caused by overly concentrated detergent.

[0117] As another embodiment of the present invention, during the washing process, the degree of wetting and the degree of contact with the detergent of the upper and lower objects to be washed are different, and they need to be turned upside down continuously so that the upper and lower objects to be washed can be swapped.

[0118] When the pulsator rotates forward and reverse alternately, there will be a brief stop. When the pulsator stops, the upside down flipping of the laundry will also stop, affecting the flipping efficiency. It may even take several times of forward and reverse rotation to complete an upside down flip.

[0119] To solve the above problems, Figure 5 As shown, the following method is used:

[0120] Step S7 includes:

[0121] S71: Control the water inlet to end;

[0122] S72: Control to start the forward driver;

[0123] S73: The forward driving program ends after being turned on for a preset time T;

[0124] S74: before the pulsator stops rotating, the reverse driving program is turned on;

[0125] S75: The reverse drive is turned on and ends after a preset time T;

[0126] S76: before the impeller stops rotating, the forward driving program is started;

[0127] S77: Determine whether the preset washing time has been reached, if so, execute S78, otherwise execute S73;

[0128] S78: End washing and execute S9;

[0129] The forward driving program refers to controlling the impeller to rotate in the forward direction, and the reverse driving program refers to controlling the impeller to rotate in the reverse direction. The forward and reverse directions do not refer to a specific direction, but are only distinguished for convenience in description.

[0130] The method for switching the motor between the forward drive program and the reverse drive program is to switch the positive and negative poles of the power supply to the motor, and the transmission structure can also be replaced so that the motor can provide power for the rotation of the impeller in the forward and reverse directions.

[0131] In this embodiment, when the pulsator rotates forward and reverse alternately, when the driver stops and the pulsator is still rotating due to inertia, the power in the opposite direction is controlled to be applied, so that the speed of the pulsator's inertial rotation quickly decreases to stop and changes direction. There is no pause time when the pulsator rotates forward and reverse alternately, and the time when the pulsator rotates at a low speed is very short, which can provide continuous and strong power for turning the laundry upside down and improve the washing efficiency.

[0132] As an implementation method of this embodiment, when the impeller is in inertial rotation, applying the power in the opposite direction too early will cause a strong impact between the power provided by the motor to the impeller and the rotational inertia of the impeller itself, which will not only generate noise but also damage the motor and the impeller. Applying the power in the opposite direction too late will cause the impeller to be in a low speed for a long time, affecting its turning effect on the laundry.

[0133] To avoid this problem, Figure 6 As shown, the following method is used:

[0134] Step S7 includes:

[0135] S701: Control water inlet end;

[0136] S702: Preset the pulsator speed N O ;

[0137] S703: Control to start the forward driver program;

[0138] S704: The forward driving program ends after being started for a preset time T;

[0139] S705: Determine whether the preset washing time has been reached, if so, execute S713, otherwise execute S706;

[0140] S706: Control and obtain the impeller speed N;

[0141] S707: Compare the acquired rotation speed N with the preset impeller rotation speed N O The size of O , then execute S708, otherwise execute S706;

[0142] S708: Control to start the reverse driver;

[0143] S709: The reverse driving program ends after being started for a preset time T;

[0144] S710: Determine whether the preset washing time has been reached, if so, execute S713, otherwise execute S711;

[0145] S711: Control and obtain the impeller speed N;

[0146] S712: Compare the acquired rotation speed N with the preset impeller rotation speed N O The size of O , then execute S703, otherwise execute S711;

[0147] S713: End washing and execute S9;

[0148] The speed of the impeller can be obtained by setting a speed sensor near the impeller.

[0149] In this embodiment, when the inertial rotation speed of the impeller is reduced to the preset impeller speed N O When the impeller is turned on, the driver in the opposite direction is controlled to start, which can not only avoid excessive impact between the power provided by the motor to the impeller and the rotational inertia of the impeller itself, but also shorten the time when the impeller is in low-speed rotation as much as possible, and enhance the stirring effect of the impeller on turning the laundry upside down.

[0150] As another implementation method of this embodiment, it is troublesome to set up a speed sensor to monitor the rotation speed of the impeller. To solve this problem, the following method can be used:

[0151] Step S7 includes:

[0152] S701: Control water inlet end;

[0153] S702: Preset the pulsator rotation time t0;

[0154] S703: Control to start the forward driver program;

[0155] S704: The forward driving program ends after the preset time T, and the timing starts;

[0156] S705: Determine whether the preset washing time has been reached, if so, execute S713, otherwise execute S706;

[0157] S706: Control to obtain the timing time t;

[0158] S707: Compare the obtained timing time t with the preset impeller rotation time t0. If t≥t O , then execute S708, otherwise execute S706;

[0159] S708: Control to start the reverse driver;

[0160] S709: The reverse driving program ends after the preset time T is started, and the timing is restarted;

[0161] S710: Determine whether the preset washing time has been reached, if so, execute S713, otherwise execute S711;

[0162] S711: Control acquisition of timing time t;

[0163] S712: Compare the obtained timing time t with the preset impeller rotation time t0. If t≥t O , then execute S703, otherwise execute S711;

[0164] S713: End washing and execute S9;

[0165] The time t starts counting from the end of the forward driving program and the reverse driving program. When a new timing starts, the old timing stops and is replaced by the new timing.

[0166] The preset impeller rotation time t0 is determined by experiments. After the forward driver ends this time, the impeller speed is reduced to a speed that can start the reverse driver; after the reverse driver ends this time, the impeller speed is reduced to a speed that can start the forward driver. This time is less than the time required for the impeller to stop naturally after the motor stops providing power to the impeller.

[0167] In this embodiment, the preset impeller rotation time t0 is used as the judgment basis for controlling the change of driving direction, which can avoid the need to set up equipment for detecting the impeller rotation speed, simplify the structure, make the control simpler, and avoid the risk of inaccurate impeller rotation speed detection in unexpected situations.

[0168] Furthermore, when the water inflow is different, the rotation speed of the impeller is also different, and the time required for the impeller speed to be reduced to the point where the driver in the opposite direction can be turned on is also different. Therefore, it is necessary to control the impeller rotation time t0 to be proportional to the maximum rotation speed of the impeller during washing.

[0169] The maximum rotational speed of the impeller can be obtained by querying relevant parameters, or by setting a relevant detection device near the impeller to obtain it.

[0170] As another implementation of this embodiment, when the laundry is stirred only by the impeller, the stirring effect can only be applied to the bottom layer of the laundry, and the effect of turning the laundry upside down is not obvious. To solve this problem, the following method can be used:

[0171] In step 7, the motor not only provides power for the rotation of the impeller, but also provides power for the rotation of the barrel body, so that the barrel body rotates in the opposite direction of the impeller. When the rotation direction of the barrel impeller is changed, the barrel body also changes its rotation direction, and its rotation direction is always opposite to that of the impeller.

[0172] In this embodiment, the barrel and the impeller rotate simultaneously and in opposite directions, and the relative rotation speed between the two is greatly increased, thereby forming a stronger upside-down turning effect on the laundry, thereby improving the washing efficiency.

[0173] Furthermore, in the steps S706-S712, the water flow formed by the stirring action of the impeller and / or the barrel body on the water flow is called zero-stop water change flow, under the action of this water flow, the laundry is turned upside down in the barrel body, so that the laundry is evenly soaked.

[0174] Preferably, in steps S706-S712, the preset time T is 0.3S.

[0175] The washing device also includes a bionic kneading water flow and an anti-entanglement water flow.

[0176] The bionic scrubbing water flow refers to the water flow state in the barrel body when the barrel body and the impeller rotate in opposite directions and the impeller and the barrel body rotate at the same speed. This water flow can simulate the effect of manually rubbing the laundry to achieve a better cleaning effect.

[0177] Preferably, when the bionic kneading water flow is produced, the rotation of the impeller is controlled by rotating in the forward direction for 0.5S, resting for 0.3S, and rotating in the reverse direction for 0.5S.

[0178] The anti-entanglement water flow refers to a water flow that reduces the rotation-stop ratio of the impeller, balances the laundry in the barrel through rotation and intermittent alternation, and untangles the laundry that has been entangled.

[0179] Preferably, when producing the anti-entanglement water flow, the rotation of the impeller is controlled by rotating in the forward direction for 0.5S, resting for 0.5S, and rotating in the reverse direction for 0.5S.

[0180] Furthermore, during the washing process, the washing equipment is controlled to work in the order of zero-stop water flow, bionic kneading water flow, and anti-entanglement water flow, and the water flow is continuously circulated during the washing process.

[0181] The present invention proposes to meet user needs from multiple angles, uses an upgraded AI intelligent fuzzy algorithm, sets the washing program through intelligent weighing and cloth quality detection, and sets a detergent constant speed instant dissolution structure to generate a mixed liquid of equal proportion detergent concentration, which is evenly sprayed into the barrel.

[0182] The present invention also provides a washing device, wherein the washing device is controlled by the control method of the present invention.

[0183] The washing device comprises a barrel body for accommodating objects to be washed, a pulsator and a motor located at the bottom of the barrel body, wherein the motor provides power for the rotation of the pulsator.

[0184] The washing device also includes a central control system for controlling the operation of the washing device.

[0185] The washing machine further comprises a current detection device, such as an ammeter, for detecting the value of the current flowing through the motor.

[0186] The washing device also includes a water inlet switch for controlling the on and off of water inlet, when the water inlet switch is turned on, water is inletted into the barrel, and when the water inlet switch is turned off, water inlet is stopped. The water inlet switch is controlled by the central control system.

[0187] In the present invention, during the water intake process, the washing device determines whether the water intake in the barrel is completed by monitoring the current flowing through the motor, which can effectively avoid the influence of different water absorption rates of the laundry on the water intake amount and make the water intake more accurate.

[0188] Furthermore, the washing device also includes a speed sensor for detecting the rotation speed of the impeller.

[0189] When the inertial rotation speed of the impeller is reduced to the preset impeller speed N O When the impeller is turned on, the driving program in the opposite direction is controlled to start, which can not only avoid excessive impact between the power provided by the motor to the impeller and the impeller's own rotational inertia, but also shorten the time when the impeller is in low-speed rotation as much as possible, and enhance the stirring effect of the impeller on turning the laundry upside down.

[0190] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A control method for a washing device, the washing device comprising a pulsator and a motor for providing power to the pulsator, characterized in that: The preset current value I0 is used. During the water inlet process, the impeller is controlled to rotate, the current value I of the motor is obtained, and the obtained current value I is compared with the preset current value I0. If I≤I0, the water inlet is controlled to end.

2. A control method for a washing device according to claim 1, characterized in that: The amount of laundry to be washed in the washing device is controlled to be positively correlated with the obtained amount of laundry.

3. A control method for a washing device according to claim 1 or 2, characterized in that: The washing device includes a barrel for accommodating objects to be washed, and the control of the rotation of the pulsator includes: The preset water level value H0, during the water inlet process, controls the acquisition of the water level height value H in the barrel, compares the acquired water level height value H with the preset water level value H0, and if H≥H0, controls the impeller to rotate.

4. A control method for a washing device according to claim 3, characterized in that: The surface of the impeller has a concave-convex structure, and the water level height corresponding to the highest point of the impeller is H MAX , the preset water level value H0>H MAX ; Preferably, the first water level height value H1 is preset, H1≥4*H MAX , the preset water level value H MAX <H0<H1.

5. A control method for a washing device according to any one of claims 1 or 2, characterized in that: The preset current value is I0', I0'>I0. When I>I0, the obtained current value I is compared with the preset current value I0'. If I≥I0', detergent is added into the barrel and the impeller is controlled to rotate in one direction.

6. A control method for a washing device according to any one of claims 1 or 2, characterized in that: The washing device includes a forward driving device for controlling the forward rotation of the pulsator and a reverse driving device for controlling the reverse rotation of the pulsator. When I≤I0, after the forward driving program ends and before the impeller stops rotating forward, the reverse driving program is controlled to start; When the reverse driving program ends and before the impeller stops rotating in the reverse direction, the forward driving program is controlled to start.

7. A control method for a washing device according to claim 6, characterized in that: Preset pulsator speed N O After the forward driving program is finished, the impeller speed N is obtained and the obtained speed N is compared with the preset impeller speed N. O The size of O , then control to start the reverse driver; After the reverse driving program is completed, the impeller speed N is obtained and compared with the preset impeller speed N. O The size of O , then the control starts the forward driver.

8. A control method for a washing device according to claim 6, characterized in that: The impeller rotation time t0 is preset, and the timing starts after the forward driving program ends, and the timing time t is obtained. The obtained time t is compared with the preset time t0. If t≥t0, the reverse driving program is controlled to start; After the reverse driving program is finished, the timing is started, the timing time t is obtained, and the obtained time t is compared with the preset time t0. If t≥t0, the forward driving program is controlled to be turned on; The preset time t0 is less than the time required for the impeller to stop rotating naturally after the forward driving program and / or the reverse driving program is completed.

9. A control method for a washing device according to claim 6, characterized in that: The barrel body and the impeller are controlled to rotate in opposite directions, and when the impeller changes its rotation direction, the barrel body changes its rotation direction at the same time.

10. A washing device, characterized in that: The washing equipment is controlled by the washing equipment control method described in any one of claims 1 to 9.

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