EP4206394A1 - Verfahren und vorrichtung zur steuerung des trocknens von kleidungsstücken sowie wäschebehandlungsvorrichtung und speichermedium - Google Patents

Verfahren und vorrichtung zur steuerung des trocknens von kleidungsstücken sowie wäschebehandlungsvorrichtung und speichermedium Download PDF

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Publication number
EP4206394A1
EP4206394A1 EP21878984.0A EP21878984A EP4206394A1 EP 4206394 A1 EP4206394 A1 EP 4206394A1 EP 21878984 A EP21878984 A EP 21878984A EP 4206394 A1 EP4206394 A1 EP 4206394A1
Authority
EP
European Patent Office
Prior art keywords
humidity
duration
humidity level
dried
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21878984.0A
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English (en)
French (fr)
Other versions
EP4206394A4 (de
Inventor
Yiting XIA
Liu XUAN
Xiaosong ZHU
Tao Jiang
Shiyao ZHA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Little Swan Electric Co Ltd
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Wuxi Little Swan Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Wuxi Little Swan Electric Co Ltd filed Critical Wuxi Little Swan Electric Co Ltd
Publication of EP4206394A1 publication Critical patent/EP4206394A1/de
Publication of EP4206394A4 publication Critical patent/EP4206394A4/de
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/46—Control of the operating time
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/12—Humidity or dryness of laundry
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the application relates to the technical field of household appliances, and relates to, but is not limited to, a method for controlling laundry drying, a control device for laundry drying, a laundry treatment apparatus and a storage medium.
  • a laundry dryer is a clean household appliance that uses electric heating to evaporate and dry the moisture in the washed laundry immediately.
  • the laundry dryer is especially needed when laundry is difficult to dry in winter in the north and in "continuous humid weather" in the south.
  • embodiments of the application provide a method for controlling laundry drying, a control device for laundry drying, a laundry treatment apparatus and a storage medium.
  • An embodiment of the application provides a method for controlling laundry drying, which is applied to a laundry treatment apparatus.
  • the method includes the following operations.
  • a drying process is entered, and a humidity level of an object to be dried is initialized into a first humidity level.
  • a display panel of the laundry treatment apparatus is controlled to display a first remaining drying duration, the first remaining drying duration being determined according to a first working duration corresponding to the first humidity level, and a first dried duration (the first dried duration refers to a duration for which the object to be dried has been dried at the first humidity level) at the first humidity level.
  • a humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets a level update condition, the humidity level of the object to be dried is updated to a next humidity level of a current humidity level.
  • the display panel is controlled to display a second remaining drying duration, the second remaining drying duration being determined according to a second working duration corresponding to the next humidity level, and a second dried duration (the second dried duration refers to a duration for which the object to be dried has been dried at the next humidity level) at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • the method may further include the following operations.
  • a current dried duration (the current dried duration refers to a duration for which the object to be dried has been dried at the current humidity level) at the current humidity level is acquired.
  • the current dried duration reaches a stabilization duration corresponding to the current humidity level, it is determined that the humidity value of the object to be dried reaches the stable condition.
  • the method may further include the following operations.
  • a plurality of humidity values detected at the current humidity level are acquired.
  • a difference between a maximum humidity value and a minimum humidity value among the plurality of humidity values is calculated.
  • the method may further include the following operations.
  • the humidity value of the object to be dried is acquired.
  • the humidity value of the object to be dried is less than a humidity value corresponding to the next humidity level, it is determined that the humidity value of the object to be dried meets the level update condition.
  • the method may further include the following operations.
  • the humidity value of the object to be dried is acquired.
  • the humidity value of the object to be dried is less than a humidity value corresponding to the next humidity level and a duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level reaches a maintain duration corresponding to the current humidity level, it is determined that the humidity value of the object to be dried meets the level update condition.
  • the method may further include the following operations.
  • the drying process is ended, and a heating device of the laundry treatment apparatus is controlled to stop heating.
  • a cooling process is entered, and a cooling device of the laundry treatment apparatus is controlled to start working.
  • the display panel is controlled to display a remaining cooling duration, the remaining cooling duration being determined according to a preset cooling working duration and a cooled duration (the cooled duration refers to a duration for which the object that has been dried off has been cooled).
  • the cooling device In a case that the remaining cooling duration reaches a preset duration, the cooling device is controlled to stop working.
  • the humidity level of the object to be dried includes the first humidity level, a second humidity level, a third humidity level, a fourth humidity level and a drying humidity level.
  • the first working duration corresponding to the first humidity level, the second working duration corresponding to the second humidity level, a third working duration corresponding to the third humidity level, a fourth working duration corresponding to the fourth humidity level and a fifth working duration corresponding to the drying humidity level meet the following requirements: the first working duration corresponding to the first humidity level > the second working duration corresponding to the second humidity level > the third working duration corresponding to the third humidity level > the fourth working duration corresponding to the fourth humidity level > the fifth working duration corresponding to the drying humidity level.
  • a humidity value corresponding to the first humidity level, a humidity value corresponding to the second humidity level, a humidity value corresponding to the third humidity level, a humidity value corresponding to the fourth humidity level and a humidity value corresponding to the drying humidity level meet the following requirements: the humidity value corresponding to the first humidity level > the humidity value corresponding to the second humidity level > the humidity value corresponding to the third humidity level > the humidity value corresponding to the fourth humidity level > the humidity value corresponding to the drying humidity level.
  • An embodiment of the application provides a control device for laundry drying, which is applied to a laundry treatment apparatus.
  • the control device for laundry drying includes an initialization module, a first control module and an updating module.
  • the initialization module is configured to enter a drying process and initialize a humidity level of an object to be dried into a first humidity level.
  • the first control module is configured to control a display panel of the laundry treatment apparatus to display a first remaining drying duration, the first remaining drying duration being determined according to a first working duration corresponding to the first humidity level, and a first dried duration (the first dried duration refers to a duration for which the object to be dried has been dried at the first humidity level) at the first humidity level.
  • the updating module is configured to determine that a humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets a level update condition, to update the humidity level of the object to be dried to a next humidity level of a current humidity level.
  • the first control module is further configured to control the display panel to display a second remaining drying duration, the second remaining drying duration being determined according to a second working duration corresponding to the next humidity level, and a second dried duration (the second dried duration refers to a duration for which the object to be dried has been dried at the next humidity level) at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • An embodiment of the application provides a laundry treatment apparatus, which includes:
  • the computer programs when executed by the processor, perform operations of the method for controlling laundry drying described above.
  • An embodiment of the application provides a storage medium having stored thereon computer-executable instructions that are configured to perform operations of the method for controlling laundry drying described above.
  • the embodiments of the application provide a method for controlling laundry drying, a control device for laundry drying, a laundry treatment apparatus and a storage medium.
  • the method includes the following operations. After the laundry treatment apparatus enters a drying process, a humidity level of an object to be dried is initialized into a first humidity level.
  • a display panel of the laundry treatment apparatus is controlled to display a first remaining drying duration, the first remaining drying duration being determined according to a first working duration corresponding to the first humidity level, and a first dried duration at the first humidity level. It is determined that the humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets the level update condition, the humidity level of the object to be dried is updated to a next humidity level of a current humidity level.
  • the display panel is controlled to display a second remaining drying duration, the second remaining drying duration being determined according to a second working duration corresponding to the next humidity level, and a second dried duration at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • first ⁇ second ⁇ third are used only to distinguish similar objects from each other and do not represent a specific order of the objects. It is understood that the terms “first ⁇ second ⁇ third” may, where permitted, be interchanged with each other in a specific order or in a sequence to enable the embodiments of the application described herein to be implemented in a sequence other than that illustrated or described herein.
  • FIG. 1 is a schematic flowchart of a method for controlling laundry drying according to an embodiment of the application. As shown in FIG. 1 , the method for controlling laundry drying includes the following operations.
  • a drying process is entered, and a humidity level of an object to be dried is initialized into a first humidity level.
  • the method for controlling laundry drying according to the embodiment of the application is applied to a laundry treatment apparatus, which may be an apparatus with drying function such as the laundry washer-dryer and the laundry dryer.
  • the object to be dried may be a laundry, shoes, a bag, and the like to be washed.
  • the laundry treatment apparatus is described by taking the laundry washer-dryer as an example, and the object to be dried is described by taking a laundry to be dried as an example.
  • the laundry treatment apparatus refers to the laundry washer-dryer
  • the object to be dried refers to the laundry to be dried.
  • the working principle of the laundry washer-dryer is as follows: dry cold air is heated into dry hot air by a heating device; the dry hot air changes into moist hot air after passing through the laundry to be dried; the moist hot air changes into dry cold air and condensed water after passing through a condenser; the condensed water is discharged from a drain pipe; said dry cold air is changed into dry hot air by the heating device again, said dry hot air passes through the laundry to be dried; the operations described above are repeated. In this way, the moisture of the laundry to be dried is taken away, to achieve the purpose of drying the laundry.
  • the user places the laundry to be dried into a tub of the laundry washer-dryer and selects a drying procedure, and then presses a "start/pause" button to allow the laundry washer-dryer to enter the drying process.
  • the laundry treatment apparatus controls the heating device thereof to start heating.
  • the first humidity level is a level of a humidity value of the laundry to be dried before the drying process is performed, that is, a level of a humidity value of the laundry to be dried after the laundry to be dried is dehydrated.
  • a humidity level of the laundry to be dried includes a first humidity level, a second humidity level, a third humidity level, a fourth humidity level and a drying humidity level, which are respectively denoted as L0, L1, L2, L3 and L4.
  • the laundry to be dried has a maximum humidity at the first humidity level L0, a greater humidity at the second humidity level L1, a general humidity at the third humidity level L2, a drier humidity (i.e., a lower humidity) at the fourth humidity level L3, and a minimum humidity at the fifth humidity level L4.
  • the laundry to be dried is at the fifth humidity level L4, the laundry to be dried has been dried off.
  • a display panel of the laundry treatment apparatus is controlled to display a first remaining drying duration.
  • the first remaining drying duration is determined according to a first working duration corresponding to the first humidity level, and a first dried duration (the first dried duration refers to a duration for which the object to be dried has been dried at the first humidity level) at the first humidity level.
  • a difference between the first working duration and the first dried duration may be determined as the first remaining drying duration.
  • the first working duration corresponding to the first humidity level L0, a second working duration corresponding to the second humidity level L1, a third working duration corresponding to the third humidity level L2, a fourth working duration corresponding to the fourth humidity level L3 and a fifth working duration corresponding to the drying humidity level L4 meet the following requirements: the first working duration corresponding to the first humidity level > the second working duration corresponding to the second humidity level > the third working duration corresponding to the third humidity level > the fourth working duration corresponding to the fourth humidity level > the fifth working duration corresponding to the drying humidity level.
  • the fifth working duration may be set to be 0.
  • a duration required for drying the laundry to be dried is preset as the first working duration. At the first humidity level, the duration required for drying the laundry to be dried is the longest, and the first remaining drying duration displayed on the display panel is counted down from the first working duration.
  • the first working duration is 4 hours
  • the first remaining drying duration initially displayed on the display panel is "04:00:00".
  • the first remaining drying duration begins to decrease with the increase of the first dried duration. That is, the first remaining drying duration displayed on the display panel gradually decreases from "04:00:00” to "03:59:59", "03:59:58", ....
  • a humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets a level update condition, the humidity level of the object to be dried is updated to a next humidity level of a current humidity level.
  • the humidity value of the object to be dried is detected when the humidity value of the object to be dried is uneven, the obtained humidity value is unstable.
  • the detected humidity value is small.
  • the humidity level of the laundry to be dried is determined according to the detected humidity value at this time, the humidity level of the laundry to be dried is higher than the actual humidity level of the laundry to be dried.
  • the humidity level of the laundry to be dried may be mistakenly determined as L3 when the humidity value of the laundry to be dried located in a drier position is detected; and the detected humidity value is greater when the humidity value of the laundry to be dried located in a wetter position is detected.
  • the humidity level of the laundry to be dried is determined according to the detected humidity value of the laundry to be dried located in the wetter portion, the determined humidity level of the laundry to be dried will be lower than the actual humidity level of the laundry to be dried.
  • the humidity level of the laundry to be dried may be mistakenly determined as L1 when the humidity value of the laundry to be dried located in the wetter position is detected.
  • the difference of humidity values of the laundries to be dried located in different positions is more significant due to the poor water absorption of the chemical fiber, which leads to a greater probability of mistaken determination.
  • the humidity value of the object to be dried is detected.
  • the error between the detected humidity value and the actual humidity value of the object to be dried may be reduced, the possibility that the detected humidity value is inconsistent with the actual humidity value may be reduced, and the accuracy of the detected humidity value may be improved, thereby ensuring that mistaken determination is not occurred when it is determined whether the updated humidity level is reached, and ensuring that the expected drying effect is achieved.
  • the drying process is continued at the first humidity level, until the humidity value of the object to be dried reaches the stable condition, and the humidity value meets the level update condition, and then operation S 105 is entered.
  • the display panel is controlled to display a second remaining drying duration.
  • the second remaining drying duration is determined according to a second working duration corresponding to the next humidity level, and a second dried duration (the second dried duration refers to a duration for which the object to be dried has been dried at the next humidity level) at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • a difference between the second working duration and the second dried duration may be determined as the second remaining drying duration.
  • the first remaining drying duration displayed on the display panel jumps to the second remaining drying duration, where the second remaining drying duration is less than the first remaining drying duration.
  • the first remaining drying duration displayed on the display panel is counted down from the first working duration. At this time, the humidity value of the laundry to be dried reaches the stable condition, and the humidity value meets the level update condition, then the first remaining drying duration displayed on the display panel is updated to the second remaining drying duration.
  • the first remaining drying duration initially displayed on the display panel is "04:00:00". It takes 2 minutes to determine that the humidity value of the laundry to be dried reaches the stable condition and the humidity value meets the level update condition. At this time, the first remaining drying duration displayed on the display panel is "03:58:00", and the first remaining drying duration displayed on the display panel is updated to the second remaining drying duration, that is, jumping from "03:58:00” to "03:00:00". Then, at the second humidity level, the second remaining drying duration begins to decrease with the increase of the second dried duration, that is, the second remaining drying duration displayed on the display panel gradually decreases from "03:00:00" to "02:59:59", "02:59:58", ....
  • the first remaining drying duration displayed on the display panel is counted down from the first working duration, and after working for 0.5 hours, the first remaining drying duration displayed on the display panel is "03:00:00".
  • the first remaining drying duration displayed on the display panel is updated to the second remaining drying duration.
  • the second remaining drying duration is determined according to the second working duration corresponding to the second humidity level, and the second dried duration (here, the second dried duration refers to a duration for which the laundry to be dried has been dried at the second humidity level) at the second humidity level.
  • the second dried duration of the laundry washer-dryer at the second humidity level is 0, that is, the first remaining drying duration displayed on the display panel is updated to the second working duration, that is, jumping from "03:30:00" to "03:00:00".
  • the second remaining drying duration begins to decrease with the increase of the second dried duration, that is, the second remaining drying duration displayed on the display panel gradually decreases from "03:00:00" to "02:59:59”, "02:59:58", ....
  • the remaining drying duration displayed on the display panel is updated gradually according to the humidity level of the object to be dried, to ensure that the expected drying effect is achieved, and avoid the situation that the remaining drying duration displayed on the display panel jumps too fast or even jumps directly to 0 when the detected humidity value is inconsistent with the actual humidity value of the object to be dried.
  • the humidity level of the object to be dried is initialized into the first humidity level.
  • the display panel of the laundry treatment apparatus is controlled to display the first remaining drying duration, where the first remaining drying duration is determined according to the first working duration corresponding to the first humidity level, and the first dried duration at the first humidity level. It is determined that the humidity value of the object to be dried reaches the stable condition, and in a case that the humidity value meets the level update condition, the humidity level of the object to be dried is updated to a next humidity level of a current humidity level.
  • the display panel is controlled to display a second remaining drying duration, where the second remaining drying duration is determined according to a second working duration corresponding to the next humidity level, and a second dried duration at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • the method for controlling laundry drying may further include operation S03. At S03, it is determined whether the humidity value of the object to be dried reaches the stable condition.
  • the operation S03 may include the following operations.
  • a current dried duration (the current dried duration refers to a duration for which the object to be dried has been dried at the current humidity level) at the current humidity level is acquired.
  • a current humidity value reaches the stable condition according to the current dried duration at the current humidity level. For example, when the first dried duration at the first humidity level reaches a preset first duration threshold, it is determined that the humidity value of the object to be dried reaches the stable condition.
  • the first duration threshold may be set to be any value ranging between 100 and 180 seconds.
  • the operation S03 may include the following operations.
  • the plurality of humidity values acquired may be a plurality of humidity values which are continuously acquired or a plurality of humidity values which are randomly acquired; and the acquisition may be periodic acquisition or random acquisition, which are not limited by the embodiment of the application.
  • the humidity value of the object to be dried is detected 10 times to obtain 10 humidity values.
  • the difference between the maximum humidity value and the minimum humidity value among the 10 humidity values is 50 g/m 3 .
  • the difference threshold corresponding to the first humidity level is 100 g/m 3 .
  • the difference 50 g/m 3 is less than the difference threshold 100 g/m 3 corresponding to the first humidity level, thus it is determined that the humidity value of the object to be dried reaches the stable condition.
  • the difference threshold may be set by the user in combination with the actual situations, and may also be a default value which is set when the laundry washer-dryer leaves the factory, which is not limited by the embodiment of the application.
  • the method for controlling laundry drying may further include operation S04. At S04, it is determined whether the humidity value of the object to be dried meets the level update condition.
  • the above operation S04 may include the following operations.
  • the humidity value of the object to be dried is acquired.
  • a humidity value corresponding to the first humidity level L0, a humidity value corresponding to the second humidity level L1, a humidity value corresponding to the third humidity level L2, a humidity value corresponding to the fourth humidity level L3 and a humidity value corresponding to the drying humidity level L4 meet the following requirements: the humidity value corresponding to the first humidity level > the humidity value corresponding to the second humidity level > the humidity value corresponding to the third humidity level > the humidity value corresponding to the fourth humidity level > the humidity value corresponding to the drying humidity level.
  • the humidity value of the object to be dried is detected.
  • the humidity value detected one time is less than the humidity value corresponding to the next humidity level, it is determined that the humidity value of the object to be dried meets the level update condition.
  • the above operation S04 may include the following operations.
  • the humidity value of the object to be dried is acquired.
  • a humidity value corresponding to the first humidity level L0, a humidity value corresponding to the second humidity level L1, a humidity value corresponding to the third humidity level L2, a humidity value corresponding to the fourth humidity level L3 and a humidity value corresponding to the drying humidity level L4 meet the following requirements: the humidity value corresponding to the first humidity level > the humidity value corresponding to the second humidity level > the humidity value corresponding to the third humidity level > the humidity value corresponding to the fourth humidity level > the humidity value corresponding to the drying humidity level.
  • the humidity value of the object to be dried is detected.
  • each of a plurality of humidity values which are detected multiple times in a preset maintain duration is less than the humidity value corresponding to the next humidity level, it is determined that the humidity value of the object to be dried meets the level update condition. Otherwise, when the above requirement is not met, it is determined that the humidity value of the object to be dried does not meet the level update condition.
  • the maintain duration may be set to be any value ranging between 20 and 200 seconds.
  • the humidity value of the object to be dried is detected one time.
  • the humidity value of the object to be dried is detected multiple times in a duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level.
  • the second implementation further ensures that when the humidity value of the object to be dried is stable and is maintained to be less than the humidity value corresponding to the next humidity level, the remaining drying duration displayed on the display panel is updated according to the humidity level of the object to be dried. Therefore, compared with the first implementation, the second implementation may further reduce the error between the acquired humidity value and the actual humidity value of the object to be dried, to ensure that the expected drying effect is achieved.
  • the method for controlling laundry drying may further include the following operations.
  • the drying process is ended, and a heating device of the laundry treatment apparatus is controlled to stop heating.
  • the updated humidity level is the drying humidity level L4
  • the laundry to be dried has been dried off.
  • the drying process is ended, and the heating device is controlled to stop heating.
  • a cooling process is entered, and a cooling device of the laundry treatment apparatus is controlled to start working.
  • the heating device stops heating, the temperature of the laundry that has been dried off in the laundry washer-dryer is relatively high.
  • the laundry treatment apparatus is controlled to enter the cooling process after the drying process is ended.
  • the cooling device may be a fan.
  • Cold air is fed into the tub of the laundry washer-dryer through the fan, and passes through the laundry with the higher temperature that has been dried off to take away the heat. The above operations are repeated to allow the heat of the laundry that has been dried off to be taken away, to achieve the purpose of cooling the laundry that has been dried off.
  • the display panel is controlled to display a remaining cooling duration.
  • the remaining cooling duration is determined according to a preset cooling working duration and a cooled duration (the cooled duration refers to a duration for which the object that has been dried off has been cooled).
  • a difference between the preset cooling working duration and the cooled duration is determined as the remaining cooling duration.
  • the cooling device is controlled to stop working.
  • the preset duration may be set to be 0. That is, after the cooling device is controlled to work for a fixed cooling working duration, the cooling process is ended, and the cooling device is controlled to stop working.
  • the operation S109 may be replaced with operation S 109'.
  • the cooling device is controlled to stop working in a case that the temperature in the laundry treatment apparatus is less than a preset temperature.
  • a working duration of the cooling device is non-fixed.
  • the temperature in the laundry washer-dryer decreases rapidly, to allow the working duration of the cooling device to be shortened by adopting this implementation.
  • the temperature in the laundry washer-dryer decreases slowly, to ensure that the temperature of the laundry that has been dried off will not damage the user after the cooling process is ended by adopting this implementation.
  • the cooling device is controlled to stop working according to the temperature in the tub, which allows the cooling device to be controlled more flexibly, and ensures that the temperature of the laundry that has been dried off will not damage the user.
  • FIG. 2 is another schematic flowchart of a method for controlling laundry drying according to an embodiment of the application, which is applied to a laundry treatment apparatus. As shown in FIG. 2 , the method for controlling laundry drying according to the embodiment of the application includes the following operations.
  • a drying process is entered, and a heating device of the laundry treatment apparatus is controlled to start heating.
  • a humidity level of an object to be dried is initialized into a first humidity level.
  • a display panel of the laundry treatment apparatus is controlled to display a first remaining drying duration.
  • the first remaining drying duration is determined according to a first working duration corresponding to the first humidity level, and a first dried duration (the first dried duration refers to a duration for which the object to be dried has been dried at the first humidity level) at the first humidity level.
  • a current dried duration (the current dried duration refers to a duration for which the object to be dried has been dried at a current humidity level) at a current humidity level is acquired.
  • operation S206 is entered.
  • the operation S204 is returned to reacquire a new current dried duration.
  • the above operation S204 and the above operation S205 may be replaced with operation S204' to operation S206'.
  • the operation S206 is entered.
  • the difference is greater than or equal to the difference threshold corresponding to the current humidity level, which indicates that a difference of the humidity values of the objects to be dried located in different positions in the laundry treatment apparatus is still greater.
  • the humidity value of the object to be dried is acquired after it is determined that a current humidity value is stable, which may avoid a greater error between the acquired humidity value and the actual humidity value of the object to be dried caused by the instability of humidity value, reduce the possibility that the acquired humidity value is inconsistent with the actual humidity value, and improve the accuracy of the acquired humidity value, thereby ensuring that the expected drying effect is achieved.
  • the humidity value of the object to be dried is acquired.
  • the humidity value acquired at this operation is a stable humidity value, that is, the difference between the acquired humidity value and the actual humidity value of the object to be dried is within the error range.
  • operation S209 is entered.
  • the drying is continued, and then the operation S207 is returned to reacquire a new humidity value.
  • the method for controlling laundry drying may further include operation S08.
  • operation S08 it is determined whether a duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level reaches a maintain duration corresponding to the current humidity level. In a case that the duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level reaches the maintain duration corresponding to the current humidity level, which indicates that the humidity value of the object to be dried has been brought to the humidity value corresponding to the next humidity level, the operation S209 is entered.
  • the drying is continued, and then the operation S207 is returned to reacquire a new humidity value.
  • the humidity level of the object to be dried is updated to a next humidity level of the current humidity level.
  • the display panel is controlled to display a second remaining drying duration.
  • the second remaining drying duration is determined according to a second working duration corresponding to the next humidity level, and a second dried duration (the second dried duration refers to a duration for which the object to be dried has been dried at the next humidity level) at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • next humidity level is not the drying humidity level, which indicates that the object to be dried has not been dried off
  • the operation S204 is entered.
  • the next humidity level is the drying humidity level, which indicates that the object to be dried has been dried off
  • operation S213 is entered.
  • the drying process is ended, and the heating device of the laundry treatment apparatus is controlled to stop heating.
  • a cooling process is entered, and a cooling device of the laundry treatment apparatus is controlled to start working.
  • the display panel is controlled to display a remaining cooling duration.
  • the remaining cooling duration is determined according to a preset cooling working duration and a cooled duration (the cooled duration refers to a duration for which the object that has been dried off has been cooled).
  • operation S217 is entered. In a case that the remaining cooling duration does not reach the preset duration, which indicates that the temperature of object that has been dried off is still higher, the operation S216 is continued.
  • the operation S216 may be replaced with operation S216'.
  • the operation S217 is entered.
  • the operation S216' is continued.
  • the cooling device is controlled to stop working.
  • the heating device of the laundry treatment apparatus is controlled to start heating, and the humidity level of the object to be dried is initialized into the first humidity level.
  • the display panel of the laundry treatment apparatus is controlled to display the first remaining drying duration.
  • the current dried duration at the current humidity level is acquired. In a case that the current dried duration reaches the stabilization duration corresponding to the current humidity level, it is determined that the humidity value of the object to be dried reaches the stable condition.
  • the humidity value of the object to be dried is acquired.
  • the humidity value of the object to be dried is less than the humidity value corresponding to the next humidity level, and the duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level reaches a maintain duration corresponding to the current humidity level, it is determined that the humidity value meets a level update condition. At this time, the humidity level of the object to be dried is updated to a next humidity level of the current humidity level, and the display panel is controlled to display the second remaining drying duration.
  • the remaining drying duration displayed on the display panel is updated according to the humidity level of the object to be dried, which may not only reduce the error between the acquired humidity value and the actual humidity value of the object to be dried, but also gradually update the remaining drying duration according to the humidity level of the object to be dried, to ensure that the expected drying effect is achieved.
  • the above operations are repeated until the next humidity level is the drying humidity level.
  • the heating device is controlled to stop heating, the cooling process is entered, the cooling device of the laundry treatment apparatus is controlled to start working, and the display panel is controlled to display the remaining cooling duration.
  • the cooling device is controlled to stop working, which may ensure that the temperature of the laundry that has been dried off has been decreased to the safe value and the laundry that has been dried off does not damage the user when the laundry that has been dried off is taken out.
  • the laundry dryer determines the humidity level of the laundry to be dried while determining whether the laundry to be dried has been dried off.
  • the laundry dryer mistakenly determines that the laundries which have not been dried off yet have been dried off due to chemical fiber of the laundries to be dried, and the remaining duration displayed on the laundry dryer jumps directly to 0, resulting in poor drying effect of the laundries made of chemical fiber.
  • the remaining duration displayed on the laundry dryer jumps too fast, resulting in poor use experience.
  • an embodiment of the application provides an improved method for drying the laundry made of chemical fiber, which may effectively avoid the occurrence of the above problem and provide the user with a good drying experience.
  • FIG. 3 is yet another schematic flowchart of a method for controlling laundry drying according to an embodiment of the application, which is applied to a laundry treatment apparatus, such as a laundry washer-dryer. As shown in FIG. 3 , the method for controlling laundry drying according to the embodiment of the application includes the following operations.
  • a humidity level is initialized into L0.
  • L0 represents a maximum humidity of the load (corresponding to the above object to be dried).
  • an initial timing time T is initialized into 0.
  • T1 is a first stabilization duration for the humidity value.
  • T is greater than or equal to T1, which indicates that a humidity value of the laundry to be dried is stable
  • operation S305 is entered.
  • T is less than T1
  • the operation S304 is returned to perform the determination.
  • a humidity value HUM during operation is acquired.
  • the HUM represents a current humidity value.
  • L1 represents a greater humidity of the load.
  • operation S307 is entered. Otherwise, in a case that the above requirements are not met, the operation S305 is returned to reacquire a humidity value.
  • the humidity level is updated to L1.
  • the initial timing time T is initialized into 0.
  • T2 is a second stabilization duration for the humidity value.
  • T is larger than or equal to T2, which indicates that the humidity value of the laundry to be dried is stable
  • operation S310 is entered.
  • T is less than T2
  • the operation S309 is returned to perform the determination.
  • the humidity value HUM during operation is acquired.
  • L2 represents a general humidity of the load.
  • HUM is less than the humidity value corresponding to L2
  • a duration for which the HUM is maintained to be less than the humidity value corresponding to L2 is larger than or equal to t2
  • operation S312 is entered. Otherwise, in a case that the above requirements are not met, the operation S310 is returned to reacquire a humidity value.
  • the humidity level is updated to L2.
  • the initial timing time T is initialized to 0.
  • T3 is a third stabilization duration for the humidity value.
  • T is greater than or equal to T3, which indicates that the humidity value of the laundry to be dried is stable
  • operation S315 is entered.
  • T is less than T3
  • the operation S314 is returned to perform the determination.
  • the humidity value HUM during operation is acquired.
  • L3 represents a drier (that is, a lower humidity) of the load.
  • HUM is less than the humidity value corresponding to L3
  • a duration for which the HUM is maintained to be less than the humidity value corresponding to L3 is greater than or equal to t3
  • operation S317 is entered. Otherwise, in a case that the above requirements are not met, the operation S315 is returned to reacquire a humidity value.
  • the humidity level is updated to L3.
  • the initial timing time T is initialized to 0.
  • T4 is a fourth stabilization duration for the humidity value.
  • T is greater than or equal to T4, which indicates that the humidity value of the laundry to be dried is stable
  • operation S320 is entered.
  • T is less than T4
  • the operation S319 is returned to perform the determination.
  • the humidity value HUM during operation is acquired.
  • L4 represents a driest (that is, a minimum humidity) of the load.
  • HUM is less than the humidity value corresponding to L4
  • a duration for which the HUM is maintained to be less than the humidity value corresponding to L4 is greater than or equal to t4
  • operation S322 is entered. Otherwise, in a case that the above requirements are not met, the operation S320 is returned to reacquire a humidity value.
  • the humidity level is updated to L4.
  • L0 represents the maximum humidity of the load
  • L4 represents the minimum humidity of the load.
  • the timing time T is a time for stabilizing the humidity value.
  • T1 to T4 may be set to range from 100 to 180 seconds.
  • t1 to t4 is a time in which the humidity value is maintained, which may be set to range from 20 to 200 seconds.
  • the laundry dryer determines the humidity level of the laundry made of chemical fiber while determining whether the laundry made of chemical fiber has been dried off. When the laundries made of chemical fiber are few or dry, the laundry dryer jumps directly to L4 to determine that the laundry made of chemical fiber has been dried off, and the display time also jumps in one step.
  • the humidity level may be determined sequentially according to the order from L1 to L4, and the display time may sequentially jump from more time to less time in four stages.
  • the improved embodiment of the application not only prevents the laundry dryer from mistakenly determining that the laundry made of chemical fiber has been dried off, but also provides the user with a good drying experience.
  • the embodiment of the application may reduce the probability of mistaken determination of the laundry made of chemical fiber and improve the satisfaction of the user's use experience by sequentially determining the humidity level of the laundry made of chemical fiber.
  • an embodiment of the application provides a control device for laundry drying.
  • Modules included in the device and units included in the modules may be implemented by a processor in a computer device, and certainly may also be implemented by a specific logic circuit.
  • the processor may be a central processing unit (CPU), a microprocessor unit (MPU), a digital signal processing (DSP) or a field programmable gate array (FPGA), etc.
  • FIG. 4 is a structural schematic diagram of a control device for laundry drying according to an embodiment of the application, which is applied to a laundry treatment apparatus, such as a laundry washer-dryer.
  • the control device for laundry drying 400 includes an initialization module 401, a first control module 402 and an updating module 403.
  • the initialization module 401 is configured to enter a drying process and initialize a humidity level of an object to be dried into a first humidity level.
  • the first control module 402 is configured to control a display panel of the laundry treatment apparatus to display a first remaining drying duration, the first remaining drying duration being determined according to a first working duration corresponding to the first humidity level, and a first dried duration (the first dried duration refers to a duration for which the object to be dried has been dried at the first humidity level) at the first humidity level.
  • the updating module 403 is configured to determine that a humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets a level update condition, to update the humidity level of the object to be dried to a next humidity level of a current humidity level.
  • the first control module 402 is further configured to control the display panel to display a second remaining drying duration, where the second remaining drying duration is determined according to a second working duration corresponding to the next humidity level, and a second dried duration (the second dried duration refers to a duration for which the object to be dried has been dried at the next humidity level) at the next humidity level.
  • the second remaining drying duration is less than the first remaining drying duration.
  • control device for laundry drying 400 may further include a first acquisition module and a first determining module.
  • the first acquisition module is configured to acquire a current dried duration (the current dried duration refers to a duration for which the object to be dried has been dried at the current humidity level) at the current humidity level.
  • the first determining module is configured to determine that the humidity value of the object to be dried reaches the stable condition in a case that the current dried duration reaches a stabilization duration corresponding to the current humidity level.
  • control device for laundry drying 400 may further include a second acquisition module, a calculation module and a second determining module.
  • the second acquisition module is configured to acquire a plurality of humidity values detected at the current humidity level.
  • the calculation module is configured to calculate a difference between a maximum humidity value and a minimum humidity value among the plurality of humidity values.
  • the second determining module is configured to determine that the humidity value of the object to be dried reaches the stable condition in a case that the difference is less than a difference threshold corresponding to the current humidity level.
  • control device for laundry drying 400 may further include a third acquisition module and a third determining module.
  • the third acquisition module is configured to acquire the humidity value of the object to be dried.
  • the third determining module is configured to determine that the humidity value of the object to be dried meets the level update condition in a case that the humidity value of the object to be dried is less than a humidity value corresponding to the next humidity level.
  • control device for laundry drying 400 may further include a fourth acquisition module and a fourth determining module.
  • the fourth acquisition module is configured to acquire the humidity value of the object to be dried.
  • the fourth determining module is configured to determine that the humidity value of the object to be dried meets the level update condition in a case that the humidity value of the object to be dried is less than a humidity value corresponding to the next humidity level and a duration for which the humidity value of the object to be dried is maintained to be less than the humidity value corresponding to the next humidity level reaches a maintain duration corresponding to the current humidity level.
  • control device for laundry drying 400 may further include a second control module, a third control module, a fourth control module and a fifth control module.
  • the second control module is configured to end the drying process and control a heating device of the laundry treatment apparatus to stop heating in a case that the updated humidity level is a drying humidity level.
  • the third control module is configured to enter a cooling process and control a cooling device of the laundry treatment apparatus to start working.
  • the fourth control module is configured to control the display panel to display a remaining cooling duration, where the remaining cooling duration is determined according to a preset cooling working duration and a cooled duration (the cooled duration refers to a duration for which the object that has been dried off has been cooled).
  • the fifth control module is configured to control the cooling device to stop working in a case that the remaining cooling duration reaches a preset duration.
  • the humidity level of the object to be dried includes the first humidity level, a second humidity level, a third humidity level, a fourth humidity level and a drying humidity level.
  • the first working duration corresponding to the first humidity level, the second working duration corresponding to the second humidity level, a third working duration corresponding to the third humidity level, a fourth working duration corresponding to the fourth humidity level and a fifth working duration corresponding to the drying humidity level meet following requirements: the first working duration corresponding to the first humidity level > the second working duration corresponding to the second humidity level > the third working duration corresponding to the third humidity level > the fourth working duration corresponding to the fourth humidity level > the fifth working duration corresponding to the drying humidity level.
  • a humidity value corresponding to the first humidity level, a humidity value corresponding to the second humidity level, a humidity value corresponding to the third humidity level, a humidity value corresponding to the fourth humidity level and a humidity value corresponding to the drying humidity level meet the following requirements: the humidity value corresponding to the first humidity level > the humidity value corresponding to the second humidity level > the humidity value corresponding to the third humidity level > the humidity value corresponding to the fourth humidity level > the humidity value corresponding to the drying humidity level.
  • control device for laundry drying is similar to the above description of the embodiment of the method for controlling laundry drying, and has the same beneficial effect as the above description of the embodiment of the method for controlling laundry drying.
  • Technical details not disclosed in the embodiment of the control device for laundry drying of the application will be understood by those skilled in the art with reference to the description of the embodiment of the method for controlling laundry drying of the application.
  • the above method for controlling laundry drying may also be stored in a computer-readable storage medium.
  • the technical solutions of the embodiments of the application in essence or parts of the technical solutions of the embodiments of the application which contribute to the conventional art may be embodied in form of software product, and the computer software product is stored in a storage medium, including a plurality of instructions configured to enable a piece of computer equipment (which may be a personal computer, a server, network equipment or the like) to execute all or part of the method in each embodiment of the application.
  • the abovementioned storage medium includes various media for storing program codes, such as U disk, mobile hard disk, a read only memory (ROM), a magnetic disk or an optical disk. Therefore, embodiments of the application are not limited to any particular combination of hardware and software.
  • the embodiment of the application provides a computer-readable storage medium having stored thereon computer programs that, when executed by a processor, perform operations of the method for controlling laundry drying according to the above embodiments.
  • FIG. 5 is a structural schematic diagram of a laundry treatment apparatus according to an embodiment of the application.
  • Other exemplary structures of the laundry treatment apparatus 500 may be anticipated according to the exemplary structure of the laundry treatment apparatus 500 shown in FIG. 5 . Therefore, the structure described herein should not be considered as a limitation, for example, some of the components described below may be omitted, or components not described below may be added to meet the special requirements of certain applications.
  • the laundry treatment apparatus 500 shown in FIG. 5 includes a processor 501, at least one communication bus 502, a user interface 503, at least one external communication interface 504 and a memory 505.
  • the communication bus 502 is configured to implement connection and communication between these components.
  • the user interface 503 may include a display panel 5031, and the external communication interface 504 may include a standard wired interface and wireless interface.
  • the processor 501 is configured to execute programs of the method for controlling laundry drying stored in the memory, to perform operations of the method for controlling laundry drying according to the above embodiments.
  • control device for laundry drying and the storage medium is similar to the above description of the embodiment of the method for controlling laundry drying, and has the same beneficial effect as the above description of the embodiment of the method for controlling laundry drying.
  • Technical details not disclosed in the embodiments of the control device for laundry drying and the storage medium of the application will be understood with reference to the description of the embodiment of the method for controlling laundry drying of the application.
  • the device and method disclosed in some embodiments provided by the application may be implemented in other manners.
  • the device embodiment described above is only schematic, and for example, division of the units is only logic function division, and other division manners may be adopted during practical implementation.
  • multiple units or components may be combined or integrated into another system, or some characteristics may be neglected or not executed.
  • coupling or direct coupling or communication connection between various displayed or discussed components may be indirect coupling or communication connection, implemented through some interfaces, of the devices or the units, and may be electrical and mechanical or adopt other forms.
  • the units described as separate parts may or may not be physically separated from each other, and parts displayed as units may or may not be physical units, and may be located in the same place, or may also be distributed to multiple network units. Part or all of the units may be selected to achieve the purpose of the solutions of the embodiments according to practical requirements.
  • each functional unit in the embodiments of the application may be integrated into a processing unit, or each functional unit may also serve as a single unit independently, or two or more than two functional units may also be integrated into a unit.
  • the abovementioned integrated unit may be implemented either in the form of hardware or in the form of hardware and software functional unit.
  • the abovementioned programs may be stored in a computer-readable storage medium, and the programs are executed to execute the operations of the abovementioned method embodiment.
  • the abovementioned storage medium includes various media for storing program codes, such as U disk, mobile hard disk, ROM, a magnetic disk or an optical disk.
  • the integrated unit of the application when being implemented in form of software function module and sold or used as an independent product, the integrated unit of the application may also be stored in a computer-readable storage medium.
  • the technical solutions of the embodiments of the application in essence or parts of the technical solutions of the embodiments of the application which contribute to the conventional art may be embodied in form of software product, and the computer software product is stored in a storage medium, including a plurality of instructions configured to enable a product to execute all or part of the method in each embodiment of the application.
  • the abovementioned storage medium includes various media for storing program codes, such as mobile storage equipment, a ROM, a magnetic disk or an optical disk.
  • the embodiments of the application provide a method for controlling laundry drying, a control device for laundry drying, a laundry treatment apparatus and a storage medium.
  • the method includes the following operations.
  • a drying process is entered, and a humidity level of an object to be dried is initialized into a first humidity level.
  • a display panel is controlled to display a first remaining drying duration, the first remaining drying duration being determined according to a first working duration corresponding to the first humidity level, and a first dried duration at the first humidity level. It is determined that a humidity value of the object to be dried reaches a stable condition, and in a case that the humidity value meets a level update condition, the humidity level of the object to be dried is updated to a next humidity level of a current humidity level.
  • the display panel is controlled to display a second remaining drying duration, the second remaining drying duration being determined according to a second working duration corresponding to the next humidity level, and a second dried duration at the next humidity level.
  • the second remaining drying duration being determined according to a second working duration corresponding to the next humidity level, and a second dried duration at the next humidity level.

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  • Engineering & Computer Science (AREA)
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  • Control Of Washing Machine And Dryer (AREA)
EP21878984.0A 2020-10-15 2021-06-04 Verfahren und vorrichtung zur steuerung des trocknens von kleidungsstücken sowie wäschebehandlungsvorrichtung und speichermedium Pending EP4206394A4 (de)

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