Washing machine, control method of washing machine, and storage medium
By detecting the turbidity and performing ultrasonic cleaning after the final rinse in a drum washing machine, the problem of secondary pollution caused by the accumulation of dirt in the inner and outer drums is solved, achieving self-cleaning and accurate detection, thus improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TCL HOME APPLIANCES (HEFEI) CO LTD
- Filing Date
- 2022-12-29
- Publication Date
- 2026-07-10
AI Technical Summary
Dirt easily accumulates between the inner and outer drums of a front-loading washing machine, and mold grows in the humid environment over a long period of time, causing secondary pollution to clothes during washing and making it impossible to clean them properly.
After the final rinse cycle of the washing machine, the turbidity of the washing water inside the drum is checked. If it is higher than the preset value, water is added and ultrasonic cleaning is performed until the turbidity is lower than the preset value. The cleaning effect is ensured by combining heating and rotating the inner drum to remove dirt.
It achieves self-cleaning of the roller, prevents secondary contamination, conforms to user habits, avoids long waiting times and reduces noise impact, and ensures detection accuracy.
Smart Images
Figure CN115897140B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of home appliances, and in particular relates to a washing machine, a control method for the washing machine, and a storage medium. Background Technology
[0002] Washing machines are an essential household appliance in people's daily lives. Washing machines include front-loading washing machines and top-loading washing machines. Front-loading washing machines have become increasingly popular with consumers in recent years due to their water-saving advantages and gentler properties on clothes.
[0003] In related technologies, the drum of a drum washing machine includes an inner drum and an outer drum. After long-term use, dirt can easily accumulate between the inner drum and the outer drum. The accumulated dirt is prone to mold growth in a humid environment, which can contaminate the washing water and cause secondary pollution to clothes during washing, making it impossible to clean the clothes. Summary of the Invention
[0004] This application provides a washing machine, a control method for the washing machine, and a storage medium to solve the problem of dirt accumulating between the inner and outer drums of a drum washing machine, which causes secondary pollution to clothes.
[0005] In a first aspect, embodiments of this application provide a method for controlling a washing machine, including:
[0006] After the final rinse cycle of the washing machine, the turbidity level of the wash water inside the drum is measured.
[0007] If the turbidity value is lower than the preset turbidity value, the washing machine will be stopped after the washing machine finishes washing.
[0008] If the turbidity value is higher than the preset turbidity value, water is injected into the drum after the washing machine finishes washing.
[0009] The drum is subjected to ultrasonic cleaning until the turbidity value of the washing water in the drum is lower than the preset turbidity value.
[0010] Optionally, the ultrasonic cleaning of the drum circulation includes:
[0011] After an ultrasonic cleaning operation is completed, the turbidity value of the washing water inside the drum is measured.
[0012] If the turbidity value is lower than the preset turbidity value, drain the washing water in the drum and control the washing machine to stop.
[0013] If the turbidity value is higher than the preset turbidity value, drain the washing water from the drum;
[0014] Water is injected into the drum, and ultrasonic cleaning of the drum continues.
[0015] Optionally, after detecting the turbidity value of the washing water inside the drum, the control method further includes:
[0016] If the difference between the currently detected turbidity value and the previously detected turbidity value is less than or equal to a first preset value, the washing machine is controlled to stop.
[0017] Optionally, after detecting the turbidity value of the washing water inside the drum, the control method further includes:
[0018] If the difference between the currently detected turbidity value and the previously detected turbidity value is greater than a first preset value, the number of ultrasonic cleaning operations is obtained.
[0019] If the number of ultrasonic cleaning cycles reaches a preset number, the washing machine will be stopped.
[0020] Optionally, before stopping the ultrasonic cleaning of the drum until the turbidity value of the washing water in the drum is lower than the preset turbidity value, the control method further includes:
[0021] The washing water inside the drum is heated.
[0022] Optionally, after the ultrasonic cleaning of the drum continues until the turbidity value of the washing water in the drum is lower than the preset turbidity value, the control method further includes:
[0023] Water is injected into the drum while the drum rotates for a first duration.
[0024] Optionally, the roller includes an outer cylinder and an inner cylinder rotatably disposed within the outer cylinder;
[0025] The ultrasonic cleaning steps include:
[0026] The ultrasonic device is activated to act on the washing water inside the drum;
[0027] Every second time interval, the inner cylinder is rotated by a first angle until the entire outer peripheral wall of the inner cylinder has been ultrasonically cleaned.
[0028] Secondly, embodiments of this application also provide a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the washing machine control method as described in any of the above embodiments.
[0029] Thirdly, embodiments of this application also provide a washing machine, comprising:
[0030] A drum includes an outer cylinder and an inner cylinder rotatably disposed within the outer cylinder;
[0031] A stain sensor is installed at the bottom of the inner wall of the outer drum, and the stain sensor is used to detect the turbidity value of the washing water in the drum;
[0032] An ultrasonic device is installed at the bottom of the inner wall of the outer cylinder;
[0033] After the final rinse cycle of the washing machine, if the stain sensor detects that the turbidity value of the washing water in the drum is higher than the preset turbidity value, the ultrasonic device will be activated to perform ultrasonic cleaning on the drum after the washing machine has finished spinning.
[0034] Optionally, the washing machine further includes a heating device disposed on the bottom wall of the inner side wall of the outer drum, the heating device being used to heat the washing water inside the drum.
[0035] In the washing machine control method provided in this application embodiment, the turbidity of the washing water after the last rinse is detected. If the turbidity value of the washing water is higher than the preset turbidity value, that is, the water quality of the washing water is dirty, it means that the drum is dirty and needs to be cleaned. In this embodiment, after the washing machine finishes washing, after the user takes out the clothes in the drum, the drum is cleaned by ultrasonic cleaning. The energy emitted by the ultrasonic waves peels off the dirt on the drum, thereby achieving self-cleaning of the drum and preventing secondary pollution of the clothes in the next wash.
[0036] Furthermore, the control method of this application embodiment detects the washing water in the drum after the final rinse of the washing machine. Since the final rinse of the washing machine involves injecting clean water into the drum to clean the clothes, there is very little detergent remaining in the washing water at this time, and very little dirt is washed off the clothes. This can avoid interference from residual detergent or dirt in the washing water to the detection. After rinsing, the dirt on the drum can fall into the washing water, which can ensure the relative accuracy of the detection results.
[0037] In addition, the control method provided in this application embodiment performs ultrasonic cleaning on the drum after the washing machine finishes washing. Therefore, the clothes inside the drum can be removed before cleaning the drum. That is, the washing program of a complete set of clothes has been completed before cleaning the drum in this application embodiment, which is in line with the user's usage habits, avoids the user having to wait too long to remove the clothes, and prevents the dirt peeled off from the drum during the cleaning process from causing secondary pollution to the clothes. Attached Figure Description
[0038] The technical solution and its beneficial effects will become apparent from the following detailed description of specific embodiments of this application, in conjunction with the accompanying drawings.
[0039] Figure 1This is a first flowchart of a control method for a washing machine provided in an embodiment of this application.
[0040] Figure 2 for Figure 1 The flowchart of the specific steps in step 103 of the control method.
[0041] Figure 3 for Figure 1 The flowchart of the specific steps in step 104 of the control method.
[0042] Figure 4 This is a second flowchart of a control method for a washing machine provided in an embodiment of this application.
[0043] Figure 5 This is a partial structural diagram of a washing machine provided in an embodiment of this application. Detailed Implementation
[0044] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0045] In related technologies, a drum washing machine includes a shell and a drum. The drum includes an inner drum and an outer drum. The outer drum is fixed inside the shell, and the inner drum is rotatably disposed inside the outer drum. A water passage gap is formed between the inner drum and the outer drum, and the inner drum has a water passage hole communicating with the water passage gap. During the washing process, clean water is injected into the water passage gap through a water supply device, and the clean water flows into the inner drum through the water passage hole. However, due to the above structure of the drum, some impurities such as lint, dander, and lint inevitably remain on the outer wall of the inner drum or the inner wall of the outer drum during drainage. These impurities, when in a humid environment for a long time, breed mold, contaminate the washing water, and cause secondary pollution to clothes during washing, making it impossible to clean clothes and affecting the user experience.
[0046] To address the aforementioned problems, this application provides a method for controlling a washing machine.
[0047] Please refer to the diagram. Figure 1 This is a first flowchart illustrating a washing machine control method provided in an embodiment of this application. In this embodiment, the washing machine control method includes:
[0048] 101: After the final rinse cycle of the washing machine, check the turbidity value of the washing water inside the drum.
[0049] Specifically, the turbidity of the water can be detected using a water quality testing device. For example, the water quality testing device could be a stain sensor, which can be installed inside the drum. The turbidity of the washing water detected by the stain sensor can determine the level of dirt inside the drum.
[0050] For example, a washing machine includes a drum, which includes an outer drum and an inner drum rotatably disposed within the outer drum. A water passage gap is formed between the outer drum and the inner drum, and the inner drum has a water passage hole communicating with the water passage gap. A stain sensor can be disposed at the bottom of the inner wall of the outer drum, and the stain sensor can detect the turbidity value of the washing water inside the drum.
[0051] The washing machine also includes a controller. The stain sensor feeds back the detected turbidity value to the controller, so that the controller can determine whether the drum needs to be cleaned based on the turbidity value, and then output the corresponding execution command.
[0052] Understandably, the final rinse of a washing machine involves injecting clean water into the drum to wash the clothes. In this embodiment, the turbidity value of the washing water is detected after the final rinse of the washing machine. At this time, there is very little detergent remaining in the washing water, and very little dirt is washed off the clothes. This avoids interference from residual detergent or dirt in the washing water with the detection. After rinsing, the dirt on the drum can fall into the washing water, which can ensure the relative accuracy of the detection results.
[0053] 102: If the turbidity value is lower than the preset turbidity value, the washing machine will stop after the washing cycle is finished.
[0054] It should be noted that the preset turbidity value is a reference value set in advance within the controller's control program. The preset turbidity value can be a fixed value or a range of values.
[0055] Understandably, if the turbidity value is lower than the preset turbidity value, that is, the washing water in the drum is relatively clean and there is no need to clean the drum, then the controller will control the washing machine to execute the remaining instructions of the washing program, that is, to execute the dehydration process of the clothes. After the dehydration is completed, the controller will control the washing machine to stop.
[0056] 103: If the turbidity value is higher than the preset turbidity value, add water to the drum after the washing machine finishes washing.
[0057] Understandably, if the turbidity value is higher than the preset turbidity value, it means that the washing water inside the drum is relatively dirty. This means that the inside of the drum is dirty. During the washing machine process, dirt on the inner wall of the outer drum and the outer wall of the inner drum falls into the washing water, causing the turbidity value detected by the stain sensor to be high. In this case, the drum needs to be cleaned to prevent secondary pollution of clothes in the next wash.
[0058] Furthermore, the drum is cleaned only after the washing machine has finished washing. In other words, the control method of this application embodiment cleans the drum only after a complete washing cycle of the clothes has ended, which is in line with the user's usage habits and avoids the user having to wait a long time to take out the clothes.
[0059] To prevent contamination of washed clothes during the drum cleaning process, the clothes must be removed from the drum before cleaning. For details, please refer to... Figure 2 The process of filling the drum with water includes the following steps:
[0060] 1031: If clothes are detected not being removed from the drum, the washing machine will sound an alarm.
[0061] The washing machine may be equipped with an image recognition module, such as a camera. The image recognition module can acquire images of the inside of the drum and identify the acquired images to determine whether the clothes inside the drum should be removed.
[0062] If clothes are detected not being removed from the drum, the drum cannot be cleaned. In this case, the controller will instruct the washing machine to issue an alarm, such as by sounding an alarm or displaying a message on the washing machine's screen, to remind the user to remove the clothes in time.
[0063] 1032: If it is detected that the clothes inside the drum have been removed, check whether the washing machine door is closed.
[0064] Understandably, since water needs to be added to the drum, the washing machine door needs to be closed to prevent water leakage during cleaning. Furthermore, since cleaning the drum inevitably generates noise, keeping the door closed during the cleaning process can reduce noise to some extent, thus avoiding impacting the user experience.
[0065] The door lock of a drum washing machine is usually an electromagnetic lock. You can determine whether the door is closed by testing the door lock circuit.
[0066] If the controller detects that the washing machine door is not closed, it will trigger the washing machine to sound an alarm again to remind the user to close the door in time.
[0067] 1033: If the washing machine door is detected to be closed, add water to the drum.
[0068] For example, if the washing machine door is detected to be closed, the controller controls the water supply device to inject water into the drum to the preset water level.
[0069] The preset water level is a reference water level pre-set within the controller's control program. The preset water level can be either half the distance the water level line inside the drum submerges the outer perimeter of the inner drum (i.e., the central angle of the inner drum corresponding to the water level line inside the drum is 180°), or one-third the distance the water level line inside the drum submerges the outer perimeter of the inner drum (i.e., the central angle of the inner drum corresponding to the water level line inside the drum is 120°). The preset water level can be determined based on parameters such as the power of the ultrasonic device and the size of the drum; the specific setting value of the preset water level is not limited here.
[0070] Understandably, when the actual water level inside the drum reaches the preset level, the controller stops the washing machine from filling with water. The washing machine can detect the actual water level inside the drum by detecting the water level frequency; the principle behind this water level detection is a well-known technology and will not be described in detail here.
[0071] 104: Perform ultrasonic cleaning on the drum until the turbidity value of the washing water in the drum is lower than the preset turbidity value, then stop.
[0072] Specifically, when ultrasonic waves act on the washing water inside the drum, the ultrasonic waves can generate cavitation. The energy emitted by the ultrasonic waves can generate a large number of bubbles in the washing water and continuously break them. When the bubbles break, they can generate shock waves with pressures of up to hundreds of atmospheres, thereby breaking and peeling off the dirt on the outer wall of the inner drum and the inner wall of the outer drum, thus cleaning the drum.
[0073] For example, a washing machine may be equipped with an ultrasonic device, which may be installed and fixed to the bottom of the inner wall of the outer drum so that the ultrasonic device can emit ultrasonic waves to the washing water inside the drum.
[0074] Of course, in some embodiments, ultrasonic waves can also be introduced from outside the washing machine to apply ultrasonic energy to the washing water inside the drum.
[0075] Thus, in the washing machine control method provided in this application embodiment, by detecting the turbidity of the washing water after the last rinse, if the turbidity value of the washing water is higher than the preset turbidity value, that is, the water quality of the washing water is dirty, it means that the drum is dirty and has reached the level that the drum needs to be cleaned. In this embodiment, after the washing machine finishes washing, after the user takes out the clothes in the drum, the drum is cleaned by circulating ultrasonic waves. The energy emitted by the ultrasonic waves peels off the dirt on the drum, thereby achieving self-cleaning of the drum and preventing secondary pollution of the clothes in the next wash.
[0076] Furthermore, the control method of this application embodiment detects the washing water in the drum after the last rinse of the washing machine. Since the last rinse of the washing machine involves injecting clean water into the drum to clean the clothes, there is very little detergent remaining in the washing water at this time, and very little dirt is washed off the clothes. This can avoid interference from residual detergent or dirt in the washing water to the detection. After rinsing, the dirt on the drum can fall into the washing water, so as to ensure the relative accuracy of the detection results.
[0077] In addition, the control method provided in this application embodiment performs ultrasonic cleaning on the drum after the washing machine finishes washing. Therefore, the clothes inside the drum can be removed before cleaning the drum. That is, the washing program of a complete set of clothes has been completed before cleaning the drum in this application embodiment, which is in line with the user's usage habits, avoids the user having to wait too long to remove the clothes, and prevents the dirt peeled off from the drum during the cleaning process from causing secondary pollution to the clothes.
[0078] In this embodiment of the application, ultrasonic cleaning specifically includes the following steps:
[0079] a: Activate the ultrasonic device to act on the washing water inside the drum.
[0080] Specifically, when ultrasonic waves act on the washing water inside the drum, they can create cavitation. The energy emitted by the ultrasonic waves can generate a large number of bubbles in the washing water, which continuously burst. When the bubbles burst, they can generate shock waves with pressures of up to hundreds of atmospheres, thereby breaking and peeling off the dirt on the outer wall of the inner drum and the inner wall of the outer drum.
[0081] b: Every second interval, control the inner cylinder to rotate by the first angle until the entire outer wall of the inner cylinder has been ultrasonically cleaned.
[0082] It should be noted that the first angle refers to the central angle of the inner cylinder corresponding to the water level line when water is injected to the preset water level.
[0083] For example, if the preset water level is such that the water level line inside the drum submerges one-third of the outer peripheral wall of the inner drum, then the central angle corresponding to the water level line inside the drum is 120°. After the ultrasonic device has been working for a second time, the controller controls the inner drum to rotate 120°, so that the other one-third of the outer peripheral wall of the inner drum is immersed in water, so that the ultrasonic device can perform ultrasonic cleaning on the other one-third of the outer peripheral wall of the inner drum.
[0084] After the ultrasonic device has been working for another second period of time, the controller controls the inner cylinder to rotate 120° again, so that the remaining one-third of the outer peripheral wall of the inner cylinder is immersed in water, so that the ultrasonic device can perform ultrasonic cleaning on the remaining one-third of the outer peripheral wall of the inner cylinder, thereby completing the ultrasonic cleaning of the entire outer peripheral wall of the inner cylinder.
[0085] Please refer to Figure 3 , Figure 3 for Figure 1 A flowchart detailing the specific steps of step 104 in the control method. In this embodiment, ultrasonic cleaning of the drum circulation includes the following steps:
[0086] 1041: After an ultrasonic cleaning operation is completed, the turbidity value of the washing water inside the drum is measured.
[0087] By performing an ultrasonic cleaning cycle and then directly testing the turbidity of the wash water, instead of draining and then refilling for testing, it avoids the problem of stubborn dirt remaining on the inner drum that doesn't fall into the water and thus prevents the dirt sensor from failing to detect it, avoiding misjudgments by the dirt sensor regarding the drum's dirtiness. Furthermore, it saves water and reduces water costs for users.
[0088] 1042: If the difference between the currently detected turbidity value and the previously detected turbidity value is less than or equal to the first preset value, control the washing machine to stop.
[0089] For example, taking a washing machine undergoing two ultrasonic cleaning cycles, since the drum has already been cleaned twice, the first cleaning can remove most of the dirt on the drum. Therefore, the washing water in the drum after the second cleaning is much cleaner than the washing water after the first cleaning. Under normal circumstances, the turbidity value detected in the third test should be much smaller than the turbidity value detected in the second test. If the difference between the turbidity value detected in the third test and the turbidity value detected in the second test is small, it may be that the stain sensor or the ultrasonic device is malfunctioning, resulting in a small difference between the two test results.
[0090] In this embodiment, the current detected turbidity value is compared with the previous detected turbidity value. If the difference between the current detected turbidity value and the previous detected turbidity value is less than or equal to a first preset value, that is, the turbidity detection results of the two tests are abnormal, the sensor or the ultrasonic device may fail. In order to avoid the drum being cleaned but the drum is not cleaned, the controller controls the washing machine to stop.
[0091] Of course, the controller can also make the washing machine sound an alarm to prompt the user to inspect the washing machine to check for any abnormalities in the stain sensor or ultrasonic device.
[0092] 1043: If the difference between the currently detected turbidity value and the turbidity value detected on the previous side is greater than the first preset value, the number of ultrasonic cleaning operations is obtained.
[0093] Specifically, the current turbidity value is compared with the previous turbidity value. If the difference between the current turbidity value and the previous turbidity value is greater than the first preset value, that is, the turbidity test results of the two tests are normal, the drum can be cleaned again with ultrasonic cleaning.
[0094] However, to avoid excessive ultrasonic cleaning, this embodiment pre-sets the maximum number of ultrasonic cleaning cycles in the controller's control program. If the difference between the currently detected turbidity value and the previously detected turbidity value is greater than a first preset value, this embodiment also determines whether ultrasonic cleaning needs to be performed again by obtaining the number of ultrasonic cleaning cycles.
[0095] 1044: If the number of ultrasonic cleaning cycles reaches the preset number, control the washing machine to stop.
[0096] Understandably, in order to save on electricity and water costs, the number of ultrasonic cleaning cycles should not be excessive. When the preset number of ultrasonic cleaning cycles is reached, the controller will stop the washing machine.
[0097] 1045: If the turbidity value is lower than the preset turbidity value, drain the washing water in the drum and control the washing machine to stop.
[0098] Since this embodiment directly tests the washing water after one ultrasonic cleaning cycle, the washing water contains dirt that has been peeled off from the inner and outer drums. If the detected turbidity value is lower than the preset turbidity value, that is, the washing water is relatively clean, it means that the drum has been cleaned.
[0099] At this point, the controller opens the drain outlet of the washing machine to drain the washing water from the drum. Once the water has drained, the controller stops the washing machine.
[0100] 1046: If the turbidity value is higher than the preset turbidity value, drain the washing water from the drum.
[0101] 1047: Add water into the drum and continue ultrasonic cleaning of the drum.
[0102] If the number of ultrasonic cleaning cycles does not reach the preset number, the ultrasonic cleaning will continue for the next cycle. At this time, the controller will control the water supply device to inject water into the drum to the preset water level, and then start the ultrasonic device to work.
[0103] This application also provides a control method for a washing machine; please refer to [reference needed]. Figure 4 , Figure 4This is a second flowchart of a washing machine control method provided in an embodiment of this application. In this embodiment, the washing machine control method includes steps 201-206, wherein steps 201, 202, 203, and 205 are the same as steps 101-104 of the washing machine control method provided in the above embodiment, and will not be described in detail below.
[0104] 201: After the final rinse cycle of the washing machine is completed, the turbidity value of the washing water inside the drum is detected. See the above embodiment for details.
[0105] 202: If the turbidity value is lower than the preset turbidity value, the washing machine will stop after the washing cycle is completed. See the above embodiment for details.
[0106] 203: If the turbidity value is higher than the preset turbidity value, add water to the drum after the washing machine finishes washing. See the above embodiment for details.
[0107] 204: Heating the washing water inside the drum.
[0108] Understandably, heating the washing water inside the drum by a heating device raises the water temperature, which softens the dirt on the inner and outer drums, making it easier to peel off under external force. In addition, the high temperature has a certain bactericidal effect, allowing the washing water to kill some heat-sensitive bacteria.
[0109] For example, a heating device can be installed inside the washing machine. For instance, the heating device can be an electric heating element, which can be installed and fixed at the bottom of the inner wall of the outer drum. When water is injected into the drum, the injected water can submerge the electric heating element. When the electric heating element is powered on, it heats the washing water inside the drum.
[0110] The washing machine can also be equipped with a temperature sensor, which is located at the bottom of the inner wall of the outer drum. The temperature sensor is used to detect the real-time temperature of the washing water in the drum and feeds the temperature of the washing water back to the controller. When the temperature of the washing water in the drum rises to the preset temperature, the controller controls the heating device to stop working.
[0111] Because the heating device needs time to heat the washing water to the preset temperature, the dirt on the outer and inner drums has enough time to soak and soften in the hot water. Combined with the next step of ultrasonic cleaning, it is easy to peel off the dirt attached to the inner wall of the outer drum and the outer wall of the inner drum, thus improving the cleaning efficiency of the drum.
[0112] 205: Perform ultrasonic cleaning on the drum until the turbidity value of the washing water inside the drum is lower than the preset turbidity value. See the above embodiment for details.
[0113] 206: Inject water into the drum while controlling the drum to rotate for the first time.
[0114] During the cleaning process of the drum, the ultrasonic waves remove dirt from the outer wall of the inner drum and the inner wall of the outer drum into the washing water. However, some of the dirt remains on the outer wall of the inner drum or the inner wall of the outer drum during drainage. This causes the dirt to suspend directly in the washing water during the next wash, and then adhere to the clothes after dehydration, resulting in soiling.
[0115] Therefore, in this embodiment, after the ultrasonic cleaning operation is completed and the washing water in the drum is drained (as explained above, the ultrasonic cleaning operation is repeated until the turbidity value of the washing water in the drum is lower than the pre-selected turbidity value, at which point the washing water in the drum is drained), water is injected into the drum so that the dirt attached to the outer wall of the inner drum and the inner wall of the outer drum can be removed by the water flow.
[0116] It is important to note that during the process of filling the drum with water, the controller keeps the washing machine's drain outlet open. This means that while water is being poured into the drum, the clean water is discharged directly from the drain outlet, allowing dirt that has detached from the outer and inner drums to be flushed out by the water flow.
[0117] Furthermore, to further improve the rinsing effect, this embodiment also controls the rotation of the drum (inner cylinder) while water is being injected. For example, the drum (inner cylinder) can be controlled to alternately run in both forward and reverse directions for a first period of time, so that the rotation of the inner cylinder is coordinated with the rinsing of the water flow, thereby enhancing the rinsing force of the water flow on the dirt attached to the inner and outer cylinders, further improving the rinsing effect, and ensuring that the dirt attached to the inner and outer cylinders is easily detached and discharged with the water flow.
[0118] This application also provides a storage medium storing a computer program thereon, wherein when the computer program is executed by a processor, it implements the steps of the washing machine control method as described in the above embodiments.
[0119] This application also provides a washing machine, specifically, a washing machine that employs the control method described above.
[0120] Please refer to Figure 5 In this embodiment, the washing machine 1 includes a drum, a stain sensor 30, and an ultrasonic device 40. The drum includes an outer drum 10 and an inner drum 20 rotatably disposed within the outer drum 10. The stain sensor 30 is disposed at the bottom of the inner wall of the outer drum 10 and is used to detect the turbidity value of the washing water in the drum. The ultrasonic device 40 is disposed at the bottom of the inner wall of the outer drum 10.
[0121] In this process, after the final rinse of the washing machine 1, if the stain sensor 30 detects that the turbidity value of the washing water in the drum is higher than the preset turbidity value, the ultrasonic device 40 will be activated to perform ultrasonic cleaning on the drum after the washing machine 1 has finished spinning.
[0122] Thus, in this embodiment, a stain sensor 30 and an ultrasonic device 40 are installed inside the drum. The stain sensor 30 detects the turbidity of the washing water after the last rinse. If the turbidity value of the washing water is higher than the preset turbidity value, that is, the water quality of the washing water is dirty, it means that the drum is dirty and needs to be cleaned. In this embodiment, after the washing machine 1 finishes spinning and the user takes out the clothes from the drum, the ultrasonic device 40 emits ultrasonic waves to the drum to perform ultrasonic cleaning. The energy emitted by the ultrasonic device 40 peels off the dirt on the drum, thereby achieving self-cleaning of the drum and preventing secondary pollution of the clothes in the next wash.
[0123] Optionally, in one embodiment, the washing machine 1 further includes a heating device 50, which is disposed on the bottom wall of the inner side wall of the outer drum 10 and is used to heat the washing water in the drum.
[0124] Specifically, before the ultrasonic device 40 performs ultrasonic cleaning on the drum, the heating device 50 heats the washing water inside the drum, raising the temperature of the washing water and softening the dirt on the drum by soaking it in the hot water. Combined with the next ultrasonic cleaning operation, the dirt on the drum can be more easily peeled off, improving the cleaning effect on the drum. In addition, the hot water can also have a bactericidal effect, killing some bacteria with poor heat resistance.
[0125] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0126] The washing machine, the control method of the washing machine, and the storage medium provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is 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 control method for a washing machine, characterized in that, include: After the final rinse cycle of the washing machine, the turbidity level of the wash water inside the drum is measured. If the turbidity value is lower than the preset turbidity value, the washing machine will be stopped after the washing machine finishes washing. If the turbidity value is higher than the preset turbidity value, water is injected into the drum after the washing machine finishes washing. The step of injecting water into the drum includes: if it is detected that the clothes in the drum have not been removed, controlling the washing machine to issue an alarm; if it is detected that the clothes in the drum have been removed, detecting whether the door of the washing machine is closed; if it is detected that the door of the washing machine is closed, injecting water into the drum. The drum is circulated and ultrasonically cleaned until the turbidity value of the washing water in the drum is lower than the preset turbidity value. The washing machine finishing washing refers to the completion of a complete washing program for the clothes.
2. The control method for a washing machine according to claim 1, characterized in that, The ultrasonic cleaning of the drum circulation includes: After an ultrasonic cleaning operation is completed, the turbidity value of the washing water inside the drum is measured. If the turbidity value is lower than the preset turbidity value, drain the washing water in the drum and control the washing machine to stop. If the turbidity value is higher than the preset turbidity value, drain the washing water from the drum; Water is injected into the drum, and ultrasonic cleaning of the drum continues.
3. The control method for a washing machine according to claim 2, characterized in that, After detecting the turbidity value of the washing water inside the drum, the control method further includes: If the difference between the currently detected turbidity value and the previously detected turbidity value is less than or equal to a first preset value, the washing machine is controlled to stop.
4. The control method for a washing machine according to claim 2, characterized in that, After detecting the turbidity value of the washing water inside the drum, the control method further includes: If the difference between the currently detected turbidity value and the previously detected turbidity value is greater than a first preset value, the number of ultrasonic cleaning operations is obtained. If the number of ultrasonic cleaning cycles reaches a preset number, the washing machine will be stopped.
5. The control method for a washing machine according to claim 1, characterized in that, Before the ultrasonic cleaning of the drum continues until the turbidity value of the washing water in the drum is lower than the preset turbidity value, the control method further includes: The washing water inside the drum is heated.
6. The control method for a washing machine according to claim 1, characterized in that, After the ultrasonic cleaning of the drum continues until the turbidity value of the washing water in the drum is lower than the preset turbidity value, the control method further includes: Water is injected into the drum while the drum rotates for a first duration.
7. The control method for a washing machine according to any one of claims 1 to 6, characterized in that, The drum includes an outer cylinder and an inner cylinder rotatably disposed within the outer cylinder; The ultrasonic cleaning steps include: The ultrasonic device is activated to act on the washing water inside the drum; Every second time interval, the inner cylinder is rotated by a first angle until the entire outer peripheral wall of the inner cylinder has been ultrasonically cleaned.
8. A storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the steps of the control method for the washing machine as described in any one of claims 1-7.
9. A washing machine, characterized in that, include: A drum includes an outer cylinder and an inner cylinder rotatably disposed within the outer cylinder; A stain sensor is installed at the bottom of the inner wall of the outer drum, and the stain sensor is used to detect the turbidity value of the washing water in the drum; An ultrasonic device is installed at the bottom of the inner wall of the outer cylinder; After the final rinse cycle of the washing machine, if the stain sensor detects that the turbidity value of the washing water in the drum is higher than the preset turbidity value, the ultrasonic device will be activated to perform ultrasonic cleaning on the drum after the washing machine has finished spinning.
10. The washing machine according to claim 9, characterized in that, The washing machine also includes a heating device, which is disposed on the bottom wall of the inner side wall of the outer drum, and is used to heat the washing water inside the drum.