A drum washing machine, a dewatering control method and device for the drum washing machine

Abstract

The embodiment of the application discloses a drum washing machine, a dewatering control method and device of the drum washing machine, which can receive a dewatering starting instruction, control the drum washing machine to drain water, speed up the drum when the draining is finished, acquire a resistance value and motor power when the current rotating speed of the drum is greater than a first rotating speed, determine whether the drum washing machine has abnormal dewatering based on the resistance value and the motor power, slow down the drum, control the drum washing machine to drain water, acquire a new resistance value and new motor power if the drum washing machine has abnormal dewatering, and control the dewatering process of the drum washing machine based on the new resistance value and the new motor power. The resistance value detected by the detection device and the acquired motor power are used to control the execution program of the drum washing machine in the case of abnormal dewatering such as dewatering with water, so as to improve the dewatering effect of the washing machine and the washing experience of the user.

Description

Technical Field

[0001] This application relates to the field of washing machine control technology, specifically to a drum washing machine, a method and apparatus for controlling the dehydration of a drum washing machine. Background Technology

[0002] With the increasing adoption of ultra-thin designs in drum washing machines, the inner drum diameter is constantly increasing, leading to a decrease in the gap between the inner and outer drums. This causes problems during high-speed spin-drying. If the clothes contain a lot of water, the water squeezed out of the clothes will be forced to flow back out with the spinning drum, preventing proper and rapid drainage. This results in abnormal spin-drying, such as spin-drying with water remaining. This situation leads to two negative consequences: 1. High-speed spin-drying with water significantly increases motor current, increasing power consumption and motor wear, thus affecting the motor's lifespan; 2. After spin-drying, the excessively high water content of the clothes greatly reduces the effectiveness of the spin-drying process, lowering user satisfaction. Summary of the Invention

[0003] This application provides a drum washing machine, a method and apparatus for controlling the dehydration of a drum washing machine, which can improve the dehydration effect of the washing machine and enhance the user's washing experience.

[0004] In a first aspect, embodiments of this application provide a drum washing machine, the drum washing machine including a drum and a detection device disposed on the drum;

[0005] The detection device includes two detection probes with opposite electrodes. One detection probe is located at the bottom of the drum, and the other detection probe is located on the side wall of the drum.

[0006] The detection device is used to detect the resistance value on the path when the two detection probes form a path with the drum washing machine.

[0007] Secondly, embodiments of this application provide a spin-drying control method for a drum washing machine, applied to the aforementioned drum washing machine, comprising:

[0008] Receives the spin-drying start command and controls the drum washing machine to drain water;

[0009] After drainage is complete, increase the speed of the drum;

[0010] When the current rotational speed of the drum is greater than the first rotational speed, the resistance value and motor power are obtained, and the resistance value is obtained by the detection device of the drum washing machine;

[0011] Based on the resistance value and the motor power, determine whether the drum washing machine is experiencing abnormal spin-drying;

[0012] If the drum washing machine experiences abnormal spin-drying, the drum speed is reduced, the drum washing machine is controlled to drain water, and new resistance values ​​and new motor power are obtained.

[0013] The spin-drying process of the drum washing machine is controlled based on the new resistance value and the new motor power.

[0014] Thirdly, embodiments of this application also provide a spin-drying control device for a drum washing machine, applied to the aforementioned drum washing machine, comprising:

[0015] The drainage module is used to receive the spin-drying start command and control the drum washing machine to drain water.

[0016] The speed-up module is used to increase the speed of the drum after drainage has ended;

[0017] The first data acquisition module is used to acquire the resistance value and motor power when the current rotation speed of the drum is greater than the first rotation speed. The resistance value is obtained by the detection device of the drum washing machine.

[0018] An anomaly determination module is used to determine whether the drum washing machine is experiencing abnormal spin-drying based on the resistance value and the motor power.

[0019] The second data acquisition module is used to reduce the speed of the drum, control the drum washing machine to drain water, and acquire new resistance values ​​and new motor power if the drum washing machine experiences abnormal spin-drying.

[0020] A dehydration module is used to control the dehydration process of the drum washing machine based on the new resistance value and the new motor power.

[0021] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a plurality of instructions adapted for loading by a processor to execute the steps of any of the spin-drying control methods for a drum washing machine provided in embodiments of this application.

[0022] Fifthly, embodiments of this application also provide a computer program product, including a computer program or instructions, which, when executed by a processor, implement the steps in any of the spin-drying control methods for a drum washing machine provided in embodiments of this application.

[0023] The solution adopted in the application embodiment can receive a spin-drying start command and control the drum washing machine to drain water; after drainage is completed, the drum speed is increased; if the current speed of the drum is greater than a first speed, the resistance value and motor power are obtained, the resistance value being detected by the drum washing machine's detection device; based on the resistance value and motor power, it is determined whether the drum washing machine is experiencing abnormal spin-drying; if the drum washing machine is experiencing abnormal spin-drying, the drum speed is reduced, the drum washing machine is controlled to drain water, and a new resistance value and a new motor power are obtained; based on the new resistance value and the new motor power, the spin-drying process of the drum washing machine is controlled. By using the resistance value detected by the detection device and the obtained motor power, the execution program of the drum washing machine is controlled for abnormal situations such as spin-drying with water remaining, thereby improving the spin-drying effect of the washing machine and enhancing the user's laundry experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a drum washing machine provided in an embodiment of this application;

[0026] Figure 2 This is a schematic flowchart of an embodiment of the spin-drying control method for a drum washing machine provided in this application.

[0027] Figure 3 This is a schematic flowchart of a specific embodiment of the spin-drying control method for a drum washing machine provided in this application.

[0028] Figure 4 This is a schematic diagram of the dehydration control device for a drum washing machine provided in the embodiments of this application. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Furthermore, in the description of the embodiments of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In order to reduce motor wear and improve the spin-drying effect of the washing machine and enhance the user's washing experience, this application provides a drum washing machine, a spin-drying control method and device for the drum washing machine, which will be described below with reference to the accompanying drawings.

[0032] The spin-drying control method for a drum washing machine provided in this application embodiment can be applied to a drum washing machine 100. Please refer to [link / reference]. Figure 1 ,like Figure 1 As shown, the drum washing machine 100 includes a drum 101 and a detection device 102 disposed on the drum.

[0033] The detection device 102 includes two detection probes, a first detection probe 1021 and a second detection probe 1022. The electrodes of the first detection probe 1021 and the second detection probe 1022 are opposite. For example, when the first detection probe 1021 is the positive electrode, the second detection probe 1022 is the negative electrode. Or, for example, when the first detection probe 1021 is the negative electrode, the second detection probe 1022 is the positive electrode.

[0034] One detection probe is positioned at the bottom of the roller, and the other detection probe is positioned on the side wall of the roller. For example, the first detection probe 1021 is positioned at the bottom of the roller, and the second detection probe 1022 is positioned on the side wall of the roller. Alternatively, the second detection probe 1022 is positioned at the bottom of the roller, and the first detection probe 1021 is positioned on the side wall of the roller. The specific positions of the first detection probe 1021 and the second detection probe 1022 can be adjusted according to actual conditions, and this embodiment does not impose limitations.

[0035] The detection device 102 is used to detect the resistance value on the path when the two detection probes form a path with the drum washing machine.

[0036] It is understood that the material of the above-mentioned detection device 102 is a conductive material, that is, both the first detection probe 1021 and the second detection probe 1022 are conductive materials.

[0037] In one embodiment of this application, the first detection probe 1021 and the second detection probe 1022 can be electrically connected to one or more metal detection points inside the drum. During the spin-drying process, the clothes in the drum washing machine come into contact with the metal detection points inside the drum. If the clothes have too much water content, the first detection probe 1021 and the second detection probe 1022 form a detection path with the clothes in the drum washing machine through the metal detection points. By detecting the resistance value between the two detection probes, the resistance value of the path formed between the first detection probe 1021 and the second detection probe 1022 and the drum washing machine can be determined.

[0038] In another embodiment of this application, the first detection probe 1021 and the second detection probe 1022 can also be connected to a water flow sensing circuit module inside the drum. This water flow sensing circuit module is used to sense the water flow during the spin-drying process of the drum washing machine. For example, if an abnormal situation such as water retention occurs during the spin-drying process, the water flow sensing circuit module can sense the water flow within the water flow range. The first detection probe 1021 and the second detection probe 1022 are connected through the water flow sensing circuit module inside the drum. When the water flow sensing circuit module senses the water flow, a path is formed inside the drum washing machine. By detecting the resistance value between the two detection probes, the resistance value of the first detection probe 1021 and the second detection probe 1022 on the path formed in the drum washing machine can be determined. The water flow sensing circuit module can be adjusted according to actual conditions, and this embodiment of the application does not impose any limitations.

[0039] It is understood that the implementation method of the two detection probes forming a path with the drum washing machine can be adjusted according to the actual situation, and the embodiments of this application do not impose any restrictions.

[0040] In this embodiment, the detection device 102 may include only two detection probes, which are the two poles of the detection device 102. A certain distance is set between the first detection probe 1021 and the second detection probe 1022. By detecting the resistance value of the path formed between the two detection probes (first detection probe 1021 and second detection probe 1022) and the drum washing machine, it can be determined whether the current spin-drying stage of the drum washing machine is abnormal. Abnormal spin-drying can be spin-drying with water remaining, or it can be excessive foaming during the spin-drying process. Abnormal spin-drying can be adjusted according to the actual situation, and this application does not impose any limitations.

[0041] In this embodiment, if the abnormal spin-drying is spin-drying with water remaining, this refers to a situation where, after the drum washing machine enters the high-speed spin-drying phase, if the clothes contain a lot of water, the water squeezed out of the clothes will continue to flow with the high-speed rotation of the drum, preventing the water from being discharged smoothly and quickly, thus causing the drum washing machine to spin-dry with water remaining. Spin-drying with water remaining increases the power consumption and noise of the drum washing machine and reduces the user experience. Simultaneously, spin-drying with water remaining affects the rinsing effect, resulting in more residue on the clothes after spin-drying, leading to poor washing results.

[0042] In this embodiment, abnormal dehydration is defined as excessive foaming during the dehydration process. Excessive foaming during dehydration means that the amount of foam exceeds a preset amount. If the amount of foam exceeds the preset amount during dehydration, it will result in more residue on the clothes after dehydration, leading to poor washing performance.

[0043] It is understandable that the more impurities in the water of a drum washing machine, the lower the resistance value in the path formed by the two detection probes (first detection probe 1021 and second detection probe 1022) and the drum washing machine.

[0044] Furthermore, another detection probe is disposed on the side wall of the roller within a preset height range, the preset height range including the height of the water flow range in the roller corresponding to the target abnormal dehydration.

[0045] In this embodiment, the target abnormal dehydration is dehydration with water remaining. The preset height range refers to the range of water movement on the drum of the washing machine when dehydration with water remaining occurs, where water squeezed out of the clothes or water waiting to be discharged from the drum cannot be discharged quickly and smoothly due to the high-speed rotation of the drum.

[0046] In one example, assuming the target abnormal spin-drying is spin-drying with water remaining, the preset height range is (30 cm, 60 cm). The preset height range refers to the water flow range within the height range 30 cm above the bottom of the drum of the washing machine and 60 cm above the bottom of the drum, using the bottom of the drum as a height reference point. That is, when the washing machine experiences spin-drying with water remaining, the water squeezed out of the clothes or the water waiting to be discharged from the drum, due to the high-speed rotation of the drum, prevents the water from being discharged quickly and smoothly within the height range of 30 cm above the bottom of the drum and 60 cm above the bottom of the drum.

[0047] It is understood that another detection probe can be set on the side wall corresponding to any height within the preset height range of the roller. This detection probe can also be set on the side wall corresponding to the upper-middle portion of the preset height range of the roller. For example, if the preset height range is (30 cm, 60 cm), the upper-middle portion can be the side wall approximately 50 cm above the bottom of the roller, or it can be the side wall approximately 52 cm above the bottom of the roller. Specifically, the height of the detection probe set on the roller side wall can be adjusted according to the actual situation, and this embodiment does not impose any limitations.

[0048] It should be noted that the spin-drying control method of the drum washing machine provided in this application embodiment is executed in the drum washing machine, and correspondingly, the spin-drying control device of the drum washing machine is provided in the drum washing machine.

[0049] It should be understood that Figure 1 The number of detection devices and probes shown is merely illustrative. Any number of detection devices and probes can be used depending on the implementation requirements.

[0050] The following detailed description, in conjunction with the accompanying drawings, illustrates that the executing entity in this embodiment is a drum washing machine, and the drum of the washing machine can be equipped with a detection device consisting of two detection probes with opposite electrodes. It should be noted that the order of description in the following embodiments is not intended to limit the preferred order of the embodiments. Although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown in the accompanying drawings.

[0051] Please refer to Figure 2 The spin-drying control method of this drum washing machine is applied to the aforementioned drum washing machine. The specific process of the spin-drying control method of this drum washing machine can be as follows: steps 201 to 206, wherein:

[0052] Step 201: Receive the spin-dry start command and control the drum washing machine to drain water.

[0053] In this embodiment, the spin-drying start command is used to control the drum washing machine to perform the spin-drying program. The spin-drying start command can be triggered based on the spin-drying function in the washing control program. Alternatively, the spin-drying start can be initiated based on a user-inputted command. For example, in a washing control program for laundry, the spin-drying stage can automatically begin after rinsing. For separate spin-drying control, the spin-drying can be initiated after a user-inputted start command, such as via buttons on the laundry equipment, a touchscreen, or a remote control. The triggering conditions for receiving the spin-drying start command can be adjusted according to actual conditions, and this embodiment does not impose any limitations.

[0054] In this embodiment of the application, when a spin-drying start command is received, the drum washing machine is controlled to start the spin-drying program. When the spin-drying program reaches the drainage stage, the drum washing machine is controlled to drain the water.

[0055] Step 202: After drainage is complete, increase the speed of the roller.

[0056] In this embodiment, the drainage termination can be determined by counting the drainage time of the drum washing machine. When the drainage time reaches a preset drainage time, the drum washing machine is controlled to stop draining. For example, if the preset drainage time is 3 minutes, the drum washing machine is controlled to stop draining after 3 minutes of drainage.

[0057] In this embodiment, drainage can also end when the drum washing machine is draining. The drum washing machine stops draining when the current water level reaches a preset water level. The preset water level can be the empty drum water level, which measures the water level when the drum of the washing machine is empty (excluding clothes and the water absorbed by the clothes). The preset water level can also be a preset height, such as a water level approximately 5cm above the bottom of the drum. The drainage termination condition and the preset water level can be adjusted according to actual conditions, and this embodiment does not impose any limitations.

[0058] In one embodiment of this application, when drainage is completed in a drum washing machine and the current water level of the drum washing machine reaches a preset water level, the drum washing machine is controlled to stop draining. During the drainage process up to the preset water level, a resistance value is acquired. The resistance value is obtained through a detection device of the drum washing machine.

[0059] In this embodiment, increasing the speed of the drum after drainage is completed may include: if the obtained resistance value is not less than a preset second resistance value, then controlling the drum washing machine to stop draining and increasing the speed of the drum.

[0060] The resistance value obtained is the resistance value detected by the drum washing machine's detection device when the water level is reached by a preset level. A preset second resistance value is used to measure the resistance value at which the drum washing machine experiences a third abnormal spin-drying event. This third abnormal spin-drying event can be caused by foam exceeding a preset foam threshold in the drum, or by the presence of foam in the drum. If the obtained resistance value is not less than the preset second resistance value, it indicates that the drum washing machine has not experienced a third abnormal spin-drying event, and the drum washing machine can be directly controlled to stop draining and increase the drum speed.

[0061] Furthermore, if the obtained resistance value is less than the preset second resistance value, it indicates that the drum washing machine has experienced a third abnormal spin-drying, and the drum washing machine needs to be abnormally handled.

[0062] In this embodiment, the abnormal handling process can be as follows: if the obtained resistance value is less than a preset second resistance value, it is determined that the drum washing machine has experienced a third abnormal spin-drying; based on the third abnormal spin-drying, the drum washing machine is controlled to take in water; the drum is controlled to operate at a speed not lower than a second rotation speed; the drum washing machine is controlled to drain water; during drainage, the current resistance of the drum washing machine is obtained, and if the current resistance is not less than a preset third resistance value, the drum washing machine is controlled to end drainage and return to the step of increasing the speed of the drum after drainage is completed.

[0063] The second rotational speed is used to measure the rotational speed of the drum. The second rotational speed can be a centrifugal speed or other preset speeds, and can be adjusted according to actual conditions; this embodiment does not impose any limitations. A preset third resistance value is used to measure whether the drum washing machine has resolved the third abnormal spin-drying issue. If the current resistance is not less than the preset third resistance value, it indicates that the third abnormal spin-drying issue has been resolved; otherwise, it indicates that the third abnormal spin-drying issue has not been resolved.

[0064] In this embodiment, due to excessive foam in the drum, and based on the fact that the obtained resistance value is less than a preset second resistance value, it is determined that the drum washing machine has experienced a third abnormal spin-drying process, thus requiring defoaming treatment. Based on the third abnormal spin-drying, the drum washing machine is controlled to perform a defoaming program. First, the drum washing machine is controlled to fill with water. For example, water is filled according to the sequence of spraying, main wash, etc. During water filling, or after water filling is complete, the drum is controlled to operate at a speed not lower than a second rotational speed. For example, after water filling is complete, the drum is controlled to rotate at a speed not lower than a centrifugal speed. Draining the drum washing machine can be done simultaneously with water filling and the drum operating at a speed not lower than the second rotational speed, or it can be done after the drum has operated at a speed not lower than the second rotational speed. For example, after the drum operates at a speed not lower than the second rotational speed for 1 minute and then remains still for 2 minutes, the drain pump of the drum washing machine is activated to drain the water. During drainage, the current resistance is detected by the drum washing machine's detection device. If the current resistance is not less than a preset third resistance value, the washing machine is controlled to stop draining and return to the step of increasing the drum speed after draining. If the current resistance is less than the preset third resistance value, the drum remains stationary, and the drain pump of the washing machine is turned on to drain the water until the current resistance is not less than the preset third resistance value.

[0065] In this embodiment of the application, if the obtained resistance value is less than the preset second resistance value, it is determined that the drum washing machine has a third abnormal spin-drying, and the program execution process corresponding to the third abnormal spin-drying is executed, so that the drum washing machine executes a defoaming program before spin-drying, thereby improving the spin-drying effect of the washing machine and improving the user's washing experience.

[0066] In this embodiment of the application, after the drainage is completed, the drum washing machine is controlled to enter the eccentricity detection process to detect the eccentricity of the drum. If the eccentricity of the drum meets the speed-up control conditions, the drum speed is increased.

[0067] In this embodiment, the acceleration control condition can be that the eccentricity is greater than a preset eccentricity, or the acceleration control condition can be that the eccentricity is within a preset eccentricity range. The specific acceleration control condition can be adjusted according to the actual situation, and this embodiment does not impose any limitations.

[0068] Step 203: When the current rotation speed of the drum is greater than the first rotation speed, obtain the resistance value and motor power. The resistance value is obtained by the detection device of the drum washing machine.

[0069] In this embodiment, the first rotational speed is the minimum rotational speed of the roller corresponding to the obtained resistance value and motor power. That is, if the current rotational speed of the roller is greater than the first rotational speed, then the resistance value and motor power need to be obtained.

[0070] In this embodiment of the application, the method for obtaining motor power may be to obtain the eccentricity of the drum and determine the motor power based on the eccentricity and the current rotational speed of the drum.

[0071] For example, the motor power can be determined according to the following formula (1):

[0072] P=(w1 / w0)*(n*P0 / n0)+an (1);

[0073] Where P is the motor power, and P0 is the calibrated motor power. w1 is the drum eccentricity, w0 is the calibrated drum eccentricity, n is the current speed, n0 is the calibrated speed, and an is the power of the drum at the current speed without eccentricity. The calibrated motor power, calibrated eccentricity, and calibrated speed can be obtained based on the specific drum washing machine.

[0074] In this embodiment, motor power can also be obtained by directly detecting the motor power using an instrument. The method for obtaining motor power can be adjusted according to actual circumstances, and this embodiment does not impose any limitations.

[0075] In this embodiment of the application, when the current rotational speed of the roller is greater than the first rotational speed and the current rotational speed of the roller is less than the fourth rotational speed, the resistance value and the motor power are obtained, wherein the fourth rotational speed is greater than the first rotational speed.

[0076] In this embodiment, the washing machine is further configured to stop spin-drying when the current rotation speed of the drum is not less than the fourth rotation speed.

[0077] In this embodiment, the fourth rotational speed is used to indicate that the spin-drying process is complete. That is, when the current rotational speed of the drum is not less than the fourth rotational speed, the drum washing machine is marked as having completed the spin-drying process, and the drum washing machine is controlled to stop the spin-drying process.

[0078] Step 204: Based on the resistance value and the motor power, determine whether the drum washing machine is experiencing abnormal spin-drying.

[0079] In this embodiment, abnormal dehydration can be dehydration with water remaining, or it can be excessive foaming during the dehydration process. Abnormal dehydration can be adjusted according to the actual situation, and this embodiment does not impose any limitations.

[0080] In this embodiment, if the abnormal spin-drying is spin-drying with water remaining, this refers to a situation where, after the drum washing machine enters the high-speed spin-drying phase, if the clothes contain a lot of water, the water squeezed out of the clothes will continue to flow with the high-speed rotation of the drum, preventing the water from being discharged smoothly and quickly, thus causing the drum washing machine to spin-dry with water remaining. Spin-drying with water remaining increases the power consumption and noise of the drum washing machine and reduces the user experience. Simultaneously, spin-drying with water remaining affects the rinsing effect, resulting in more residue on the clothes after spin-drying, leading to poor washing results.

[0081] In this embodiment, abnormal dehydration is defined as excessive foaming during the dehydration process. Excessive foaming during dehydration means that the amount of foam exceeds a preset amount. If the amount of foam exceeds the preset amount during dehydration, it will result in more residue on the clothes after dehydration, leading to poor washing performance.

[0082] In the embodiments of this application, based on the resistance value and motor power, it can be determined whether the drum washing machine has abnormal spin-drying, and if so, the type of abnormal spin-drying.

[0083] In this embodiment, determining whether the drum washing machine has experienced abnormal spin-drying based on the resistance value and the motor power can be as follows: if the resistance value is less than a preset first resistance value and the motor power is not less than a preset motor power, then the drum washing machine is determined to have experienced a first abnormal spin-drying. The first abnormal spin-drying is characterized by excessive foaming during the spin-drying process.

[0084] In this embodiment of the application, determining whether the drum washing machine has experienced abnormal spin-drying based on the resistance value and the motor power can also be done by determining that the drum washing machine has experienced a second abnormal spin-drying if the resistance value is less than a preset first resistance value and the motor power is less than a preset motor power, wherein the second abnormal spin-drying is spin-drying with water.

[0085] In this embodiment of the application, determining whether the drum washing machine has an abnormal spin-drying problem based on the resistance value and the motor power can also be done by returning to the step of obtaining the resistance value and motor power when the current rotation speed of the drum is greater than the first rotation speed if the resistance value is not less than a preset first resistance value.

[0086] Understandably, a preset first resistance value is used to determine whether the drum washing machine is experiencing abnormal spin-drying. If the resistance value is less than the preset first resistance value, the drum washing machine is experiencing abnormal spin-drying. A preset motor power is used to determine the type of abnormal spin-drying that is occurring. If the resistance value is less than the preset first resistance value, and the motor power is not less than the preset motor power, then the drum washing machine is determined to have experienced a first abnormal spin-drying. If the resistance value is less than the preset first resistance value, and the motor power is less than the preset motor power, then the drum washing machine is determined to have experienced a second abnormal spin-drying.

[0087] In this embodiment, based on the resistance value and motor power, it is determined whether the drum washing machine is experiencing abnormal dehydration, and if so, the type of abnormal dehydration. For different types of abnormal dehydration, a corresponding program execution process is executed, thereby improving the dehydration effect of the washing machine and enhancing the user's laundry experience.

[0088] Step 205: If the drum washing machine experiences abnormal spin-drying, reduce the speed of the drum, control the drum washing machine to drain water, and obtain new resistance values ​​and new motor power.

[0089] In this embodiment of the application, if it is determined that the drum washing machine has a first abnormal spin-drying, the drum is controlled to stop rotating and the drum washing machine is controlled to drain water according to the first abnormal spin-drying; after the drainage is completed, the new resistance value and the new motor power of the drum washing machine are obtained.

[0090] In this embodiment, if a first abnormal spin-drying event is detected in the drum washing machine, i.e., excessive foam occurs during the spin-drying process, the drum is controlled to stop rotating, i.e., the drum is controlled to remain stationary. While the drum remains stationary, the drum washing machine is controlled to drain water according to a start-stop sequence. Drainage can end when the drainage time reaches a preset duration, for example, controlling the drum washing machine to drain water for 3 minutes according to the start-stop sequence, where 3 minutes is the preset drainage time. Drainage can also end when the current water level in the drum washing machine is detected to have reached a preset water level; the specific timing can be adjusted according to actual conditions, and this application does not impose any limitations.

[0091] In this embodiment, if a second abnormal spin-drying event is determined to occur in the drum washing machine, the drum is controlled to slow down to a speed not exceeding a second rotational speed (the second rotational speed is less than the first rotational speed) based on the second abnormal spin-drying event. The drum washing machine is then controlled to drain water. During drainage, the current resistance of the drum washing machine is obtained. If the current resistance is not less than the preset first resistance value, the drum washing machine is controlled to stop draining and the drum speed is increased. The process then returns to the step of obtaining the resistance value and motor power when the current rotational speed of the drum is greater than the first rotational speed.

[0092] In this embodiment, the second rotational speed is used to measure the rotational speed of the drum. The second rotational speed can be a centrifugal speed or other preset speed, and can be adjusted according to actual conditions; this embodiment does not impose any limitations. Based on the second abnormal spin-drying, the drum is controlled to reduce its speed to a speed not exceeding the second rotational speed, or the drum can be controlled to operate at the second rotational speed. If it is determined that the drum washing machine has experienced a second abnormal spin-drying, i.e., spin-drying with water remaining, the second abnormal spin-drying program is executed to resolve the problem of spin-drying with water remaining. If the current resistance detected during drainage is not less than the preset first resistance value, it is determined that the spin-drying with water remaining has been resolved. Otherwise, the drum washing machine needs to continue draining.

[0093] Step 206: Based on the new resistance value and the new motor power, control the spin-drying process of the drum washing machine.

[0094] In this embodiment, the new resistance value can be the resistance value detected after handling the abnormal spin-drying process of the drum washing machine, or it can be the resistance value detected when the drum speed is increased. The specific new resistance value can be determined based on its position in the program.

[0095] In this embodiment, the new motor power can be the motor power obtained after handling the abnormal spin-drying process of the drum washing machine, or it can be the motor power detected when the drum speed is increased. The specific new motor power can be determined based on its position in the program.

[0096] In the embodiments of this application, based on the new resistance value and the new motor power, the drum washing machine can be controlled to increase the speed of the drum, or if the drum washing machine experiences abnormal spin-drying, the corresponding program execution process can be executed.

[0097] In this embodiment, a spin-drying start command can be received to control the drum washing machine to drain water. After drainage is complete, the drum speed is increased. If the current drum speed is greater than a first speed, a resistance value and motor power are acquired, with the resistance value detected by the drum washing machine's detection device. Based on the resistance value and motor power, it is determined whether the drum washing machine is experiencing abnormal spin-drying. If abnormal spin-drying occurs, the drum speed is reduced, the drum washing machine is controlled to drain water, and a new resistance value and new motor power are acquired. Based on the new resistance value and new motor power, the spin-drying process of the drum washing machine is controlled. By using the resistance value detected by the detection device and the acquired motor power, the execution program of the drum washing machine is controlled to address abnormal situations such as spin-drying with water remaining, thereby reducing motor wear, improving the spin-drying effect, and enhancing the user's laundry experience.

[0098] The following is in conjunction with the appendix Figure 3 The embodiments of this application will be explained and described, and are attached. Figure 3 This is a schematic flowchart of a specific embodiment of the spin-drying control method for a drum washing machine according to this application.

[0099] like Figure 3As shown, upon receiving the spin-drying start instruction, the drum washing machine is controlled to drain water. During this process, the drum washing machine drains water to a preset water level, and the resistance value R is obtained through a detection device. The relationship between the obtained resistance value R and a preset second resistance value r1 is determined. If the obtained resistance value R is less than the preset second resistance value r1, a third abnormal spin-drying condition is determined, and the drum washing machine is controlled to fill with water, rotate at a speed greater than centrifugal speed, and the drain pump starts and stops according to a controlled sequence. After running for t1 minutes, the drum remains still for t2 minutes. The drain pump is then controlled to drain water, and the resistance value R is detected. The magnitude of the obtained resistance value R and the preset third resistance value r2 are compared. If the obtained resistance value R is less than the preset third resistance value r2, the drum remains still, the drain pump drains water according to a certain sequence, and the resistance value R is detected, until the obtained resistance value R is not less than the preset third resistance value r2. At this point, the drum washing machine is determined to have finished draining, and the process jumps to the step of increasing the drum speed and obtaining the resistance value R and motor power P. If the obtained resistance value R is not less than the preset second resistance value r1, the drum washing machine is determined to be in the draining stage, and the process jumps to the step of increasing the drum speed and obtaining the resistance value R and motor power P. During the step of increasing the drum speed and obtaining the resistance value R and motor power P, the spin-drying completion condition (e.g., the current speed is greater than the fourth speed) is used to determine whether spin-drying is complete. If spin-drying is complete, the drum washing machine is controlled to end the spin-drying process; otherwise, the resistance value R is further compared to the preset first resistance value r0, and the motor power P is compared to the preset motor power Pn. Based on the resistance value R and the preset first resistance value r0, and the motor power P and the preset motor power Pn, the program execution process corresponding to the first abnormal spin-drying is executed, or the program execution process corresponding to the second abnormal spin-drying is executed, or the process returns to the step of increasing the drum speed and obtaining the resistance value R and motor power P. Notably, after executing the program execution process corresponding to the second abnormal spin-drying, the process also needs to return to the step of increasing the drum speed and obtaining the resistance value R and motor power P. The first abnormal dehydration process involves controlling the drum speed to decrease to 0, controlling the drain pump to start and stop in sequence, maintaining this at time t3, and detecting the resistance value R. The second abnormal dehydration process involves controlling the drum speed to decrease to the centrifugal speed, controlling the drain pump to start in sequence, maintaining this for a certain period of time, detecting the resistance value R, and then increasing the drum speed to z1 until R > r0.

[0100] By detecting the resistance value and obtaining the motor power through the detection device, the system controls the execution program of the drum washing machine to address abnormal situations such as water retention during spin-drying, thereby reducing motor wear, improving the spin-drying effect, and enhancing the user's laundry experience.

[0101] This embodiment also provides a spin-drying control device for a drum washing machine, which is applied to the drum washing machine described above.

[0102] For example, such as Figure 4 As shown, the spin-drying control device of the drum washing machine may include:

[0103] The drainage module 301 is used to receive the spin-drying start command and control the drum washing machine to drain water.

[0104] Speed-up module 302 is used to speed up the drum after drainage has ended.

[0105] The first data acquisition module 303 is used to acquire the resistance value and motor power when the current rotation speed of the drum is greater than the first rotation speed. The resistance value is obtained by the detection device of the drum washing machine.

[0106] The anomaly determination module 304 is used to determine whether the drum washing machine has an abnormal spin-drying process based on the resistance value and the motor power.

[0107] The second data acquisition module 305 is used to reduce the speed of the drum, control the drum washing machine to drain water, and acquire new resistance values ​​and new motor power if the drum washing machine experiences abnormal spin-drying.

[0108] The dehydration module 306 is used to control the dehydration process of the drum washing machine based on the new resistance value and the new motor power.

[0109] Optionally, in the apparatus of this application embodiment, the anomaly determination module 304 is used to determine whether the drum washing machine has experienced abnormal spin-drying based on the resistance value and the motor power, including:

[0110] The first abnormal dehydration determination unit is used to determine that the drum washing machine has experienced a first abnormal dehydration if the resistance value is less than a preset first resistance value and the motor power is not less than a preset motor power.

[0111] In the case of the first abnormal spin-drying determination unit, the second data acquisition module 305, if the drum washing machine experiences abnormal spin-drying, reduces the speed of the drum, controls the drum washing machine to drain water, and acquires new resistance values ​​and new motor power, including:

[0112] A first control unit is configured to control the drum to stop rotating and control the drum washing machine to drain water based on the first abnormal dehydration.

[0113] The first new data acquisition unit is used to acquire the new resistance value and new motor power of the drum washing machine after the drainage is completed.

[0114] Optionally, in the apparatus of this application embodiment, the anomaly determination module 304 is used to determine whether the drum washing machine has experienced abnormal spin-drying based on the resistance value and the motor power, including:

[0115] The second abnormal dehydration determination unit is used to determine that the drum washing machine has experienced a second abnormal dehydration if the resistance value is less than a preset first resistance value and the motor power is less than a preset motor power.

[0116] In the case of the second abnormal spin-drying determination unit, the second data acquisition module 305, if the drum washing machine experiences abnormal spin-drying, includes reducing the speed of the drum, controlling the drum washing machine to drain water, and acquiring new resistance values ​​and new motor power, including:

[0117] The second control unit is used to control the drum to reduce its speed to a speed not higher than the second rotational speed, which is less than the first rotational speed, based on the second abnormal dehydration.

[0118] The second drainage unit is used to control the drum washing machine to drain water.

[0119] The second new data acquisition unit is used to acquire the current resistance of the drum washing machine during drainage. If the current resistance is not less than the preset first resistance value, the drum washing machine is controlled to stop draining and the drum speed is increased.

[0120] The return unit is used to return to the step of obtaining the resistance value and motor power when the current rotational speed of the drum is greater than the first rotational speed.

[0121] Optionally, in the apparatus of this application embodiment, the spin-drying control device of the drum washing machine further includes:

[0122] The preset water level resistance acquisition unit is used to acquire the resistance value when the drum washing machine drains to the preset water level.

[0123] In the case of a preset water level resistance acquisition unit, the step of accelerating the drum after drainage in the speed-up module 302 includes:

[0124] The first speed-up unit is used to control the drum washing machine to stop draining and speed up the drum if the obtained resistance value is not less than a preset second resistance value.

[0125] Optionally, in the apparatus of this application embodiment, after the preset water level resistor acquisition unit, the spin-drying control device of the drum washing machine further includes:

[0126] The third abnormal dehydration determination unit is used to determine that the drum washing machine has experienced a third abnormal dehydration if the obtained resistance value is less than a preset second resistance value.

[0127] The third control unit is used to control the drum washing machine to take in water, control the drum to operate at a speed not lower than the second rotation speed, and control the drum washing machine to drain water according to the third abnormal dehydration.

[0128] The third new data acquisition unit is used to acquire the current resistance of the drum washing machine during drainage. If the current resistance is not less than a preset third resistance value, the drum washing machine is controlled to end drainage and return to the step of increasing the speed of the drum after drainage is completed.

[0129] Optionally, in the apparatus of this application embodiment, the first data acquisition module 303 is used to acquire the resistance value and motor power when the current rotational speed of the drum is greater than the first rotational speed, including:

[0130] The first data acquisition unit is used to acquire the resistance value and motor power when the current rotational speed of the drum is greater than the first rotational speed and the current rotational speed of the drum is less than the fourth rotational speed, wherein the fourth rotational speed is greater than the first rotational speed.

[0131] In the case of the first data acquisition unit, the spin-drying control device of the drum washing machine further includes:

[0132] The spin-drying termination unit is used to control the drum washing machine to end the spin-drying process when the current rotation speed of the drum is not less than the fourth rotation speed.

[0133] Optionally, in the apparatus of this application embodiment, the first data acquisition module 303 acquires the motor power, including:

[0134] The eccentricity acquisition unit is used to acquire the eccentricity of the roller.

[0135] The motor power determination unit is used to determine the motor power based on the eccentricity and the current rotational speed of the drum.

[0136] The device of this embodiment can receive a spin-drying start command through a drainage module to control the drum washing machine to drain water; increase the speed of the drum after drainage is completed through a speed-up module; acquire the resistance value and motor power through a first data acquisition module when the current speed of the drum is greater than a first speed; determine whether the drum washing machine is experiencing abnormal spin-drying based on the resistance value and motor power through an anomaly determination module; reduce the speed of the drum, control the drum washing machine to drain water, and acquire new resistance values ​​and new motor power through a second data acquisition module if abnormal spin-drying occurs; and control the spin-drying process of the drum washing machine based on the new resistance value and new motor power through a spin-drying module. By detecting the resistance value and acquiring the motor power, the device controls the execution program of the drum washing machine to address abnormal situations such as spin-drying with water remaining, thereby reducing motor wear, improving the spin-drying effect, and enhancing the user's laundry experience.

[0137] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0138] Therefore, embodiments of this application provide a computer-readable storage medium storing multiple computer programs that can be loaded by a processor to execute any of the spin-drying control methods for a drum washing machine provided in embodiments of this application. For example, the computer program can execute the steps of the following spin-drying control method for a drum washing machine:

[0139] Receives the spin-drying start command and controls the drum washing machine to drain water;

[0140] After drainage is complete, increase the speed of the drum;

[0141] When the current rotational speed of the drum is greater than the first rotational speed, the resistance value and motor power are obtained, and the resistance value is obtained by the detection device of the drum washing machine;

[0142] Based on the resistance value and the motor power, determine whether the drum washing machine is experiencing abnormal spin-drying;

[0143] If the drum washing machine experiences abnormal spin-drying, the drum speed is reduced, the drum washing machine is controlled to drain water, and new resistance values ​​and new motor power are obtained.

[0144] The spin-drying process of the drum washing machine is controlled based on the new resistance value and the new motor power.

[0145] Furthermore, the detailed steps of the above method can be found in the description of the foregoing embodiments, and will not be repeated here.

[0146] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0147] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0148] Since the computer program stored in the computer-readable storage medium can execute any of the dehydration control methods of the drum washing machine provided in the embodiments of this application, the beneficial effects that the dehydration control methods of the drum washing machine provided in the embodiments of this application can achieve can be realized. For details, please refer to the previous embodiments, which will not be repeated here.

[0149] According to one aspect of this application, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a drum washing machine reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the drum washing machine to perform the methods provided in the various optional implementations of the above embodiments.

[0150] In the above embodiments of the spin-drying control device, computer-readable storage medium, and computer program product for a drum washing machine, the descriptions of each embodiment have different focuses. For parts not described in detail in a particular embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process and beneficial effects of the above-described spin-drying control device, computer-readable storage medium, computer program product, drum washing machine, and its corresponding units can be referred to the description of the spin-drying control method for the drum washing machine in the above embodiments, and will not be repeated here.

[0151] The foregoing has provided a detailed description of the spin-drying control method, apparatus, washing machine, computer-readable storage medium, and computer program product for a drum washing machine according to embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling the spin-drying of a drum washing machine, characterized in that, The drum washing machine includes a drum and a detection device disposed on the drum; The detection device includes two detection probes with opposite electrodes. One detection probe is located at the bottom of the drum, and the other detection probe is located on the side wall of the drum. The detection device is used to detect the resistance value on the path when the two detection probes form a path with the drum washing machine; the method includes: Receives the spin-drying start command and controls the drum washing machine to drain water; After drainage is complete, increase the speed of the drum; When the current rotational speed of the drum is greater than the first rotational speed, the resistance value and motor power are obtained, and the resistance value is obtained by the detection device of the drum washing machine; Based on the resistance value and the motor power, determine whether the drum washing machine is experiencing abnormal spin-drying; If the drum washing machine experiences abnormal spin-drying, the drum speed is reduced, the drum washing machine is controlled to drain water, and new resistance values ​​and new motor power are obtained. The spin-drying process of the drum washing machine is controlled based on the new resistance value and the new motor power.

2. The spin-drying control method for a drum washing machine according to claim 1, characterized in that, include: The step of determining whether the drum washing machine is experiencing abnormal spin-drying based on the resistance value and the motor power includes: If the resistance value is less than a preset first resistance value and the motor power is not less than a preset motor power, then it is determined that the drum washing machine has experienced a first abnormal spin-drying. If the drum washing machine experiences abnormal spin-drying, the following steps are taken: reducing the speed of the drum, controlling the drum washing machine to drain water, and obtaining new resistance values ​​and new motor power. Based on the first abnormal dehydration, control the drum to stop rotating and control the drum washing machine to drain water; After the drainage is completed, obtain the new resistance value and the new motor power of the drum washing machine.

3. The spin-drying control method for a drum washing machine according to claim 1, characterized in that, include: The step of determining whether the drum washing machine is experiencing abnormal spin-drying based on the resistance value and the motor power includes: If the resistance value is less than the preset first resistance value and the motor power is less than the preset motor power, then it is determined that the drum washing machine has experienced a second abnormal spin-drying. If the drum washing machine experiences abnormal spin-drying, the following steps are taken: reducing the speed of the drum, controlling the drum washing machine to drain water, and obtaining new resistance values ​​and new motor power. Based on the second abnormal dehydration, the speed of the drum is controlled to be reduced to a speed not higher than the second rotational speed, where the second rotational speed is less than the first rotational speed. Control the drum washing machine to drain water; During drainage, the current resistance of the drum washing machine is obtained. If the current resistance is not less than the preset first resistance value, the drum washing machine is controlled to stop draining and the drum speed is increased. Return to the step of obtaining the resistance value and motor power when the current rotational speed of the drum is greater than the first rotational speed.

4. The spin-drying control method for a drum washing machine according to claim 1, characterized in that, The method further includes: The resistance value is obtained when the drum washing machine drains water to a preset water level; The step of increasing the speed of the drum after drainage is completed includes: If the obtained resistance value is not less than the preset second resistance value, then the drum washing machine is controlled to stop draining and the drum speed is increased.

5. The spin-drying control method for a drum washing machine according to claim 4, characterized in that, After obtaining the resistance value when the drum washing machine drains to a preset water level, the method further includes: If the obtained resistance value is less than the preset second resistance value, it is determined that the drum washing machine has experienced a third abnormal spin-drying. Based on the third abnormal dehydration, control the drum washing machine to take in water, control the drum to work at a speed not lower than the second rotation speed, and control the drum washing machine to drain water; During drainage, the current resistance of the drum washing machine is obtained. If the current resistance is not less than a preset third resistance value, the drum washing machine is controlled to end drainage and return to the step of increasing the speed of the drum after drainage is completed.

6. The spin-drying control method for a drum washing machine according to any one of claims 1 to 5, characterized in that, When the current rotational speed of the drum is greater than the first rotational speed, obtaining the resistance value and motor power includes: When the current rotational speed of the roller is greater than the first rotational speed and the current rotational speed of the roller is less than the fourth rotational speed, the resistance value and the motor power are obtained, wherein the fourth rotational speed is greater than the first rotational speed. The method further includes: If the current rotation speed of the drum is not less than the fourth rotation speed, the drum washing machine is controlled to end the spin-drying process.

7. The spin-drying control method for a drum washing machine according to any one of claims 1 to 5, characterized in that, The process of obtaining motor power includes: Obtain the eccentricity of the roller; The motor power is determined based on the eccentricity and the current rotational speed of the drum.

8. The spin-drying control method for a drum washing machine as described in any one of claims 1 to 5, characterized in that, The other detection probe is disposed on the side wall of the roller within a preset height range, which includes the height of the water flow range in the roller corresponding to the target abnormal dehydration.

9. A spin-drying control device for a drum washing machine, characterized in that, The drum washing machine includes a drum and a detection device disposed on the drum; the detection device includes two detection probes with opposite electrodes, one detection probe being disposed at the bottom of the drum and the other detection probe being disposed on the side wall of the drum; the detection device is used to detect the resistance value in the path when the two detection probes form a path with the drum washing machine; the control device includes: The drainage module is used to receive the spin-drying start command and control the drum washing machine to drain water. The speed-up module is used to increase the speed of the drum after drainage has ended; The first data acquisition module is used to acquire the resistance value and motor power when the current rotation speed of the drum is greater than the first rotation speed. The resistance value is obtained by the detection device of the drum washing machine. An anomaly determination module is used to determine whether the drum washing machine is experiencing abnormal spin-drying based on the resistance value and the motor power. The second data acquisition module is used to reduce the speed of the drum, control the drum washing machine to drain water, and acquire new resistance values ​​and new motor power if the drum washing machine experiences abnormal spin-drying. A dehydration module is used to control the dehydration process of the drum washing machine based on the new resistance value and the new motor power.

10. The spin-drying control device for a drum washing machine as described in claim 9, characterized in that, The other detection probe is disposed on the side wall of the roller within a preset height range, which includes the height of the water flow range in the roller corresponding to the target abnormal dehydration.

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