CN113338013A - Control method and device of clothes dryer and clothes dryer - Google Patents
Control method and device of clothes dryer and clothes dryer Download PDFInfo
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- CN113338013A CN113338013A CN202110706302.0A CN202110706302A CN113338013A CN 113338013 A CN113338013 A CN 113338013A CN 202110706302 A CN202110706302 A CN 202110706302A CN 113338013 A CN113338013 A CN 113338013A
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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
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/26—Condition of the drying air, e.g. air humidity or temperature
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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
- D06F58/20—General details of domestic laundry dryers
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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
- 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
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/62—Stopping or disabling machine operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The application relates to the field of clothes dryers, in particular to a control method and device of the clothes dryer and the clothes dryer. The method comprises the following steps: after the clothes dryer executes a clothes drying program, monitoring a first humidity value of air in an air duct of the clothes dryer; determining a change value of the first humidity value in unit time; when the change value of the first humidity value is smaller than a first preset value, controlling the clothes dryer to continuously execute the clothes drying program, and monitoring a second humidity value of the clothes in the drum of the clothes dryer; and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value. The technical scheme of this application has solved clothing stoving inhomogeneous, the not good problem of stoving effect.
Description
Technical Field
The application relates to the field of clothes dryers, in particular to a control method and device of the clothes dryer and the clothes dryer.
Background
In the related art, the clothes dryer takes away the water vapor through the contact of the hot air and the wet clothes, the water vapor is directly discharged to the external environment, the water vapor is taken away through the contact of the hot air and the wet clothes in a circulating mode until the clothes are determined to be completely dry, and the clothes drying process is stopped.
However, drying the laundry for a long time easily causes the laundry to be knotted and entangled in the drum. When the clothes in the drum of the clothes dryer are in a knotted and wound state and cannot be untied, the clothes drying process is stopped after the surface of the clothes is dried, but the knotted and wound parts of the clothes are still wet, so that the problems of uneven clothes drying and poor drying effect can be caused.
Disclosure of Invention
In order to solve the problems that the clothes are not uniformly dried by the clothes dryer and the drying effect is poor, the application provides a control method and device of the clothes dryer and the clothes dryer.
According to an aspect of an embodiment of the present application, there is provided a control method of a dryer, the method including: monitoring a first humidity value of air in an air duct of the clothes dryer after the clothes dryer executes a clothes drying program; determining a change value of the first humidity value in unit time; when the change value of the first humidity value is smaller than a first preset value, controlling the clothes dryer to continuously execute the clothes drying program, and monitoring a second humidity value of the clothes in the drum of the clothes dryer; and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
In an embodiment, the method further comprises: when the change value of the first humidity value is larger than or equal to a first preset value, controlling the clothes dryer to execute a shaking-out program; and when the clothes dryer finishes the shaking and dispersing program, continuously determining the change value of the first humidity value in unit time.
In an embodiment, the first preset value ranges from 3% to 10%.
In an embodiment, when the second humidity value is greater than or equal to a second preset value, the method further includes: and continuously determining the change value of the first humidity value in the unit time.
In an embodiment, after the controlling the dryer to stop the drying process, the method further includes: controlling the dryer to perform a cooling process for cooling laundry.
In an embodiment, after the clothes dryer performs a drying process, the method further includes: monitoring the temperature value of air in an air duct of the clothes dryer; if the temperature value is less than the preset temperature, controlling the clothes dryer to continuously execute the clothes drying program; and if the temperature value is greater than or equal to the preset temperature, controlling the clothes dryer to stop working.
In another aspect of the embodiments of the present application, there is also provided a control apparatus of a dryer, the apparatus including: a first monitoring unit for monitoring a first humidity value of air in an air duct of the dryer while the dryer performs a drying process; a second monitoring unit for monitoring a second humidity value of the laundry in the drum of the dryer; and the control unit is used for determining the change value of the first humidity value in unit time, controlling the clothes dryer to continuously execute the clothes drying program when the change value of the first humidity value is smaller than a first preset value, and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
In a further aspect of the embodiments of the present application, there is also provided a clothes dryer, including: the roller is provided with an inner cavity, an air inlet and an air outlet which are communicated with the inner cavity, and the inner cavity is used for loading clothes to be dried; the circulating system comprises an air duct, and two ports of the air duct are respectively communicated with the air inlet and the air outlet; the first sensor is arranged in the air duct, is close to the air outlet and is used for monitoring a first humidity value of air in the air duct of the clothes dryer; the second sensor is arranged in the inner cavity of the drum and used for monitoring a second humidity value of the clothes in the drum of the clothes dryer; and the processor is used for determining the change value of the first humidity value in unit time, controlling the clothes dryer to execute a clothes drying program when the change value of the first humidity value is smaller than a first preset value, and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
In one embodiment, the circulation system further comprises: the impeller is arranged in the air duct and used for driving air to circularly flow in the air duct in a directional mode; the condenser is arranged in the air channel and used for heating air; and the evaporator is arranged in the air duct and is used for carrying out heat exchange on the air passing through the roller.
In an embodiment, the first sensor is a temperature and humidity sensor, and the first sensor is further configured to monitor a temperature value of air in an air duct of the dryer; the processor is further used for controlling the clothes dryer to continuously execute the clothes drying program when the temperature value is smaller than a preset temperature, and controlling the clothes dryer to stop working when the temperature value is larger than or equal to the preset temperature.
The technical scheme adopted by the application has the following beneficial effects:
this application is through the first humidity value of the air in the wind channel of monitoring dryer, can confirm whether the clothing in the dryer cylinder is in the winding state of knoing, when not being in the winding state of knoing, continues the clothing procedure of drying, can make the clothing dry evenly, and the stoving effect provides.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 illustrates a flow chart of a control method of a dryer according to one embodiment of the present application;
FIG. 2 illustrates a flow chart of a control method of a dryer according to another embodiment of the present application;
FIG. 3 is a block diagram of a control apparatus of a dryer according to an exemplary embodiment;
FIG. 4 is a schematic diagram of a dryer according to an exemplary embodiment;
FIG. 5 illustrates a change curve of a first humidity value of air in a wind tunnel when laundry in a drum of a dryer is uniformly distributed according to an exemplary embodiment;
fig. 6 illustrates a change curve of a first humidity value of air in a wind tunnel when laundry in a drum of a dryer is entangled according to an exemplary embodiment.
Reference numerals:
a dryer 400; a drum 410; an inner cavity 411; an air inlet 412; an air outlet 413; an air duct 421; an impeller 422; a condenser 423; an evaporator 424; a first sensor 430; a second sensor 440; a processor 450; a water storage tank 460; a water level switch 461; a drain pump 470; a water container 480; a motor 490.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
When the clothes dryer works, the motor of the clothes dryer needs to drive the impeller and the roller to rotate together, in order to guarantee drying air volume, the impeller needs to rotate forwards for a long time, and therefore the roller needs to rotate forwards for a long time, and clothes are prone to knotting and winding in the roller. When the clothes in the drum of the clothes dryer are in a knotted and wound state and cannot be untied, after the part of the surface of the clothes leaking in the air is dried, the clothes dryer determines that the clothes are completely dried and stops the clothes drying process, but the knotted and wound parts of the clothes are still wet, so that the problems of uneven clothes drying and poor drying effect can be caused.
In order to solve the problem of uneven drying of the clothes dryer, the embodiment of the application provides a control method of the clothes dryer, and implementation details of the control method of the clothes dryer of the embodiment of the application are elaborated below:
fig. 1 shows a flowchart of a control method of a dryer according to an embodiment of the present application, which includes at least steps S110 to S140, as described in detail below, with reference to fig. 1:
step S110, after the clothes dryer performs a clothes drying procedure, monitoring a first humidity value of air in an air duct of the clothes dryer. It will be appreciated that this monitoring may be a real-time detection, i.e.: during the whole clothes drying process, a first humidity value of air in an air duct of the clothes dryer is monitored in real time.
And step S120, determining the change value of the first humidity value in unit time.
In an embodiment, the change value of the first humidity value per unit time may be a preset change value of the first humidity value within a certain time.
For example, the preset value range of the unit time may be 30s to 60s, such as: 30s, 40s, 50s, 60s, etc. For example, the predetermined unit time may be 30s, and the aforementioned change value of the first humidity per unit time may be understood as the change of the first humidity value in the time interval of 30 s.
For example, the variation value of the first humidity value in the embodiment of the present application may be a variation value of 3% in which the first humidity value decreases from 50% to 47%, and if the preset unit time is 30s, the variation value of the first humidity value in the unit time may be understood as: the variation of the first humidity value within 30s is 3%. Alternatively, the variation of the first humidity value may be a decrease of the first humidity value from 50% to 40%, and the variation is 10%, and if the preset unit time is 40s, the variation of the first humidity value per unit time may be understood as: the variation of the first humidity value within 40s is 10%.
It should be noted that, in the embodiments of the present application, the first humidity value is referred to as relative humidity, and the relative humidity refers to a percentage of the water vapor pressure in the air to the saturated water vapor pressure at the same temperature. Or the ratio of the absolute humidity of the humid air to the maximum absolute humidity that can be reached at the same temperature. And may also be expressed as the ratio of the water vapor partial pressure in humid air to the saturation pressure of water at the same temperature.
And S130, when the change value of the first humidity value is smaller than a first preset value, controlling the clothes dryer to continuously execute the clothes drying program, and monitoring a second humidity value of the clothes in the drum of the clothes dryer.
In one embodiment, the monitoring of the second humidity value of the laundry in the drum of the dryer may be monitoring the second humidity value of the laundry in the drum of the dryer in real time during the whole drying process, or monitoring the second humidity value of the laundry in the drum of the dryer when the variation value of the first humidity value is smaller than the first preset value.
And step S140, controlling the clothes dryer to stop the clothes drying process when the second humidity value is smaller than a second preset value.
In one embodiment, the second preset value is determined according to a dryness selected by the user, for example, the dryness is divided into a first level dryness, a second level dryness and a third level dryness, and when the dryness selected by the user is the first level dryness, the preset value may be 5%, that is, when the dryness selected by the user is the first level dryness, the dryer is controlled to stop the drying process when the second humidity value is less than 5%. When the dryness selected by the user is the second level dryness, the preset value may be 10%, that is, when the dryness selected by the user is the second level dryness, the dryer is controlled to stop the drying process when the second humidity value is less than 10%. When the drying degree selected by the user is the third level drying degree, the preset value may be 15%, that is, when the drying degree selected by the user is the third level drying degree, the dryer is controlled to stop the drying process when the second humidity value is less than 15%.
And when the change value of the first humidity value is greater than or equal to a first preset value, controlling the clothes dryer to execute a shaking and dispersing program.
In an embodiment, when the variation value of the first humidity value is greater than or equal to the first preset value, it may be determined that the laundry inside the drum of the dryer is in a knotted and entangled state, thereby controlling the dryer to perform a thrashing process. The clothes can be determined to be in a knotted and wound state through the change value of the first humidity value, so that the clothes dryer is controlled to execute a shaking and scattering program, the problems that when the clothes are knotted and wound and cannot be untied, the clothes are not uniformly dried, and the drying effect is poor can be effectively solved, and especially, large clothes such as bed sheets are often wound into balls, so that the surfaces of the clothes are dried, and the insides of the clothes are very humid, so that customer complaints are easily caused.
In one embodiment, the shaking procedure may be to shake off the laundry by controlling the drum to rotate in different directions in the dryer, and the time for rotating the drum in different directions may be preset, for example, after controlling the drum to rotate in the forward direction for 10s, the drum to rotate in the reverse direction for 10s, and then after controlling the drum to rotate in the forward direction for 10s, the drum to rotate in the reverse direction for 10s, and so on until the laundry is shaken off. The method can also be implemented by controlling the drum to rotate forwards for 15s and then to rotate backwards for 20s, and then controlling the drum to rotate forwards for 15s and then to rotate backwards for 20s, and the steps are repeated until the clothes are shaken out.
In one embodiment, the shaking process may also be to control the drum of the dryer to rotate intermittently at a slower speed.
And when the clothes dryer finishes the shaking and dispersing program, continuously determining the change value of the first humidity value in unit time.
In one embodiment, if the variation of the first humidity value in the unit time is continuously determined when the dryer completes the shaking and scattering process, if the variation of the first humidity value in the unit time is greater than or equal to the first preset value, the dryer is controlled to execute the shaking and scattering process until the variation of the first humidity value is less than the first preset value.
For example, the first preset value mentioned in the embodiment of the present application may range from 3% to 10%, for example: 3%, 5%, 7%, 10%, etc., but is not limited thereto. If the first preset value is too small, it is easy to make an erroneous determination, for example, the clothes in the drum of the clothes dryer are not knotted and entangled, and the variation value of the first humidity value is a normal variation range. Similarly, the first preset value cannot be set too large, and if the first preset value is set too large, an erroneous determination is easily made, for example, the clothes in the drum of the clothes dryer are knotted and entangled, and because the first preset value is set too large, the state that the clothes are knotted and entangled is easily determined as the state that the clothes are not knotted and entangled, and the clothes dryer continues to perform the clothes drying procedure.
Wherein, when the first preset value is 3 percent: if the first humidity value is reduced from 50% to 49% in the unit time, the variation value is 1% and is less than the first preset value of 3%, and at this time, the clothes dryer can be controlled to continue to execute the clothes drying program; and if the first humidity value is reduced from 50% to 40% in unit time, the variation value is 10% and is greater than the first preset value by 3%, and at this time, the dryer is controlled to perform a shaking and scattering process. And when the first preset value is 5%, controlling the clothes dryer to continue to execute the clothes drying program when the first humidity value is reduced from 50% to 49% in unit time, the change value is 1% and is 5% smaller than the first preset value, and controlling the clothes dryer to execute the shaking and scattering program when the first humidity value is reduced from 50% to 40% in unit time, the change value is 10% and is 5% larger than the first preset value.
And when the second humidity value is larger than or equal to a second preset value, continuously determining the change value of the first humidity value in unit time.
In one embodiment, when the second humidity value is greater than or equal to the second preset value, the dryness of the laundry does not reach the dryness selected by the user, and the determination of the change value of the first humidity value per unit time is continued until the laundry dryer is controlled to stop the laundry drying process when the second humidity value is less than the second preset value.
Controlling the dryer to perform a cooling process for cooling laundry after the controlling the dryer to stop the drying process.
In one embodiment, the cooling program may be cold air entering the drum to cool the clothes, and the cooling time may be set according to the user's selection, or may be set by default, for example, the default setting is 20 minutes, and the cooling program may prevent the clothes from wrinkling.
Monitoring the temperature value of air in an air duct of the clothes dryer after the clothes dryer executes a clothes drying program; if the temperature value is less than the preset temperature, controlling the clothes dryer to continuously execute the clothes drying program; and if the temperature value is greater than or equal to the preset temperature, controlling the clothes dryer to stop working.
In an embodiment, the preset temperature may be any one of 80-90 degrees, for example, the preset temperature is 90 degrees, if the temperature of the air in the air duct of the clothes dryer is monitored to be 75 degrees, the clothes dryer is controlled to continue to perform the clothes drying procedure, and if the temperature of the air in the air duct of the clothes dryer is monitored to be 100 degrees, the clothes dryer is controlled to stop working.
When the temperature in the clothes dryer is too high, clothes damage, especially cotton clothes, is easily caused, if the temperature in the clothes dryer is too high, fibrous damage is easily caused, and user experience feeling is poor, so that the clothes dryer is controlled to stop working by monitoring the temperature value of air in an air duct of the clothes dryer when the temperature value is larger than or equal to the preset temperature, and clothes can be effectively protected.
Fig. 2 shows a flowchart of a control method of a dryer according to another embodiment of the present application, which is described in detail as follows:
step S210, acquiring a first humidity value and a temperature value of air in an air duct of the clothes dryer.
In step S220, the variation value delta H1/t of the first humidity value in unit time is calculated.
Step S230, if the delta H1/t is greater than or equal to the first preset value A, namely, the delta H1/t is greater than or equal to A, step S240 is executed, if the delta H1/t is less than the first preset value A, and the temperature value is less than the preset temperature, a second humidity value of the clothes in the drum of the clothes dryer is obtained, and step S250 is executed.
And step S240, the clothes dryer executes a shaking and dispersing program, and the step S220 is executed after the shaking and dispersing program is finished.
Step S250, if the second humidity value H2 of the laundry inside the drum of the dryer is less than the second preset value B, i.e., H2< B, step S260 is performed, and if the second humidity value of the laundry inside the drum of the dryer is greater than or equal to the second preset value, step S220 is performed.
Step S260, the dryer performs a cooling process until cooling is finished.
Fig. 3 is a block diagram illustrating a control apparatus of a dryer according to an exemplary embodiment, and as shown in fig. 3, the control apparatus 300 includes: a first monitoring unit 310 for monitoring a first humidity value of air in a duct of the dryer while the dryer performs a drying process; a second monitoring unit 320 for monitoring a second humidity value of the laundry in the drum of the dryer; a control unit 330, configured to determine a variation value of the first humidity value per unit time, and to control the dryer to continue to execute the drying procedure when the variation value of the first humidity value is smaller than a first preset value, and further to control the dryer to stop the drying procedure when the second humidity value is smaller than a second preset value.
In one embodiment, the first monitoring unit 310 includes a first humidity module for monitoring a first humidity value of air in a duct of the dryer and a temperature module. The temperature module is used for monitoring the temperature value of the air in the air duct of the clothes dryer.
In one embodiment, the control unit 330 includes a time module for recording a drying time of the drying process and determining a value of the unit time, a calculation module for calculating a change value of the first humidity value of the unit time, and an execution module for controlling the dryer to continue to execute the drying process or controlling the dryer to stop the drying process.
Fig. 4 is a diagram illustrating a dryer 400 according to an exemplary embodiment, including: a drum 410 having an inner cavity 411 for loading clothes to be dried, and an air inlet 412 and an air outlet 413 communicated with the inner cavity 411; the circulating system comprises an air duct 421, and two ports of the air duct are respectively communicated with the air inlet and the air outlet; the first sensor 430 is arranged in the air duct and close to the air outlet and is used for monitoring a first humidity value of air in the air duct of the clothes dryer; a second sensor 440, disposed in the inner cavity of the drum, for monitoring a second humidity value of the laundry in the drum of the dryer; the processor 450 is configured to determine a variation value of the first humidity value per unit time, and to control the dryer to perform a drying process when the variation value of the first humidity value is smaller than a first preset value, and further to control the dryer to stop the drying process when the second humidity value is smaller than a second preset value.
The circulation system further includes: the impeller 422 is arranged in the air duct and is used for driving air to flow in the air duct in a directional and circular manner; the condenser 423 is arranged in the air duct and used for heating air; an evaporator 424 is disposed in the air duct for performing heat exchange with air passing through the drum.
In an embodiment, the clothes dryer 400 further includes a water storage tank 460, a water level switch 461 is disposed in the water storage tank for detecting a water level of water in the water storage tank, the water storage tank is disposed below the evaporator 424, and water generated by heat exchange of air passing through the drum and the evaporator flows into the water storage tank.
In one embodiment, the dryer 400 further includes a drain pump 470 connected between the water tank and the water storage tank, and a water tank 480 for pumping water in the water storage tank into the water tank.
In one embodiment, the dryer 400 further includes a motor 490, and the motor 490 may rotate the impeller 421.
In one embodiment, the second sensor is a contact humidity sensor.
In one embodiment, the first sensor is a temperature and humidity sensor, and the first sensor is further used for monitoring a temperature value of air in an air duct of the clothes dryer; the processor is further used for controlling the clothes dryer to continuously execute the clothes drying program when the temperature value is smaller than a preset temperature, and controlling the clothes dryer to stop working when the temperature value is larger than or equal to the preset temperature.
When the clothes dryer works, the impeller drives air to directionally and circularly flow in the air duct, after the compressor is started, the air is heated by the condenser and then blown into the roller, hot air is contacted with rolling damp clothes to become damp and hot air, the damp and hot air flows into the evaporator through the air duct, the damp and hot air generates cooling water through the heat exchange effect in the evaporator, the cooling water is accumulated in the water storage tank of the base under the action of gravity, after the water level switch 461 detects that the cooling water in the water storage tank is at a high water level, the drainage pump is started, the cooling water is pumped into the water container at the top, the air in the circulating air duct is continuously heated and cooled repeatedly until the second sensor detects that the clothes are completely dried.
In the above embodiment, the first sensor is a temperature and humidity sensor, and is disposed in the air outlet duct of the drum for monitoring the temperature and humidity of the air in the air duct, and the second sensor is a contact humidity sensor, and is disposed in the inner cavity of the drum for monitoring the second humidity value of the clothes in the drum of the clothes dryer.
When the clothes in the drum are uniformly distributed, the first humidity value of the air in the air duct is gradually reduced along with the clothes drying time. For example, as shown in fig. 5, when the clothes in the drum of the clothes dryer are uniformly distributed, the first humidity value of the air in the air duct gradually decreases with the increase of the drying time, in fig. 5, the first humidity value is represented by relative humidity, as can be seen from the arrow direction, the clothes in the drum are uniformly distributed, the hot air in the drum can uniformly contact with the surface of the clothes, and as can be seen from the graph, the relative humidity gradually decreases with the increase of time.
However, once the laundry inside the drum is entangled, the heat exchange efficiency inside the drum is decreased, and the first humidity value of the air inside the air duct is rapidly decreased, for example, as shown in fig. 6, when the laundry inside the drum is entangled, the first humidity value of the air inside the air duct is rapidly decreased with the increase of the drying time, as shown in fig. 6, the first humidity value is represented by relative humidity, and as can be seen from the arrow direction, the laundry inside the drum is entangled, and the hot air inside the drum can only contact with the portion of the surface of the laundry leaked in the air, and cannot contact with the entangled portion of the laundry, and as can be seen from the graph, the relative humidity decrease speed is suddenly increased when the laundry is entangled. Therefore, whether the clothes in the rotary drum of the clothes dryer are knotted and wound can be monitored by using the clothes dryer control method, if the clothes in the rotary drum of the clothes dryer are knotted and wound, the clothes wound in the rotary drum are shaken up and unwound, and then the clothes drying program is continuously executed, so that the clothes can be uniformly distributed in the rotary drum in the whole drying process, the drying process is continuous and efficient, and the final drying effect is uniform.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A control method of a clothes dryer, characterized in that the method comprises:
monitoring a first humidity value of air in an air duct of the clothes dryer after the clothes dryer executes a clothes drying program;
determining a change value of the first humidity value in unit time;
when the change value of the first humidity value is smaller than a first preset value, controlling the clothes dryer to continuously execute the clothes drying program, and monitoring a second humidity value of the clothes in the drum of the clothes dryer;
and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
2. The control method of the clothes dryer according to claim 1, characterized in that the method further comprises:
when the change value of the first humidity value is larger than or equal to a first preset value, controlling the clothes dryer to execute a shaking-out program;
and when the clothes dryer finishes the shaking and dispersing program, continuously determining the change value of the first humidity value in unit time.
3. The control method of the clothes dryer according to claim 2, wherein the first preset value ranges from 3% to 10%.
4. The control method of the clothes dryer according to claim 1, wherein when the second humidity value is greater than or equal to a second preset value, the method further comprises:
and continuously determining the change value of the first humidity value in the unit time.
5. The control method of the dryer according to claim 1, wherein after the controlling the dryer to stop the drying process, the method further comprises:
controlling the dryer to perform a cooling process for cooling laundry.
6. The control method of the dryer according to claim 1, wherein after the dryer performs the drying process, the method further comprises:
monitoring the temperature value of air in an air duct of the clothes dryer;
if the temperature value is less than the preset temperature, controlling the clothes dryer to continuously execute the clothes drying program;
and if the temperature value is greater than or equal to the preset temperature, controlling the clothes dryer to stop working.
7. A control device of a clothes dryer, characterized in that the device comprises:
a first monitoring unit for monitoring a first humidity value of air in an air duct of the dryer while the dryer performs a drying process;
a second monitoring unit for monitoring a second humidity value of the laundry in the drum of the dryer;
and the control unit is used for determining the change value of the first humidity value in unit time, controlling the clothes dryer to continuously execute the clothes drying program when the change value of the first humidity value is smaller than a first preset value, and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
8. A clothes dryer, characterized by comprising:
the roller is provided with an inner cavity, an air inlet and an air outlet which are communicated with the inner cavity, and the inner cavity is used for loading clothes to be dried;
the circulating system comprises an air duct, and two ports of the air duct are respectively communicated with the air inlet and the air outlet;
the first sensor is arranged in the air duct, is close to the air outlet and is used for monitoring a first humidity value of air in the air duct of the clothes dryer;
the second sensor is arranged in the inner cavity of the drum and used for monitoring a second humidity value of the clothes in the drum of the clothes dryer;
and the processor is used for determining the change value of the first humidity value in unit time, controlling the clothes dryer to execute a clothes drying program when the change value of the first humidity value is smaller than a first preset value, and controlling the clothes dryer to stop the clothes drying program when the second humidity value is smaller than a second preset value.
9. The clothes dryer of claim 8, wherein the circulation system further comprises:
the impeller is arranged in the air duct and used for driving air to circularly flow in the air duct in a directional mode;
the condenser is arranged in the air channel and used for heating air;
and the evaporator is arranged in the air duct and is used for carrying out heat exchange on the air passing through the roller.
10. The clothes dryer of claim 8, wherein the first sensor is a temperature and humidity sensor, and the first sensor is further configured to monitor a temperature value of air in an air duct of the clothes dryer;
the processor is further used for controlling the clothes dryer to continuously execute the clothes drying program when the temperature value is smaller than a preset temperature, and controlling the clothes dryer to stop working when the temperature value is larger than or equal to the preset temperature.
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