1. A drying judgment method of a laundry treatment apparatus, the laundry treatment apparatus comprising:

a variable frequency fan motor and a drying program is arranged;

characterized in that the method comprises:

after a drying program is started, a monitoring process is started to monitor the power and the load current of a variable frequency fan motor;

and judging the drying stage of the clothes according to the power change of the variable frequency fan motor and the fluctuation range of the load current.

2. The drying judgment method of the clothes treatment device according to claim 1, wherein judging the drying stage of the clothes according to the power variation of the variable frequency fan motor and the fluctuation amplitude of the load current comprises:

starting the drying program to judge, and judging that the drying program is in an initial drying stage when the power is reduced to exceed a first set value and the fluctuation range of the load current exceeds a set fluctuation range;

starting to judge from the initial drying stage, and judging that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds the set fluctuation range;

and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed a second set value and the fluctuation range of the load current is in the set fluctuation range.

3. The drying judgment method of a laundry processing apparatus according to claim 2, wherein after judging that the terminal drying stage is present, the method further comprises:

acquiring weight information of the dried clothes;

determining a first operation time period of a final drying stage based on a weight of the dried laundry;

and controlling the drying program to stop after the first running time period is reached.

4. The drying judgment method of a laundry processing apparatus according to claim 2, wherein after judging that the terminal drying stage is present, the method further comprises:

acquiring a drying temperature for the operation of a drying program;

determining a second operation time period of the drying stage based on the drying temperature;

and controlling the drying program to stop after the second running time period is reached.

5. The drying judgment method of a laundry processing apparatus according to claim 2, wherein after judging that the terminal drying stage is present, the method further comprises:

acquiring material information of the dried clothes;

determining a third operation time length of a final drying stage based on the material of the dried clothes;

and controlling the drying program to stop after the third running time period is reached.

6. Laundry treatment apparatus, characterized by comprising:

a variable frequency fan motor;

a drying control module for executing a drying program;

the monitoring module is used for starting a monitoring process to monitor the power and the load current of the variable-frequency fan motor after the drying control module starts a drying program;

and the drying judgment module is used for judging the drying stage of the clothes according to the power change of the variable frequency fan motor and the fluctuation range of the load current.

7. The laundry processing apparatus according to claim 6, wherein the drying determining module specifically includes:

the initial drying stage judging unit is used for judging that the drying program is in an initial drying stage when the power is reduced and exceeds a first set value and the fluctuation range of the load current exceeds a set fluctuation range from the start of the drying program;

the middle drying stage judging unit is used for starting to judge from the initial drying stage, and judging that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds the set fluctuation range;

and the final drying stage judging unit is used for judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power drops beyond the second set value and the fluctuation range of the load current is in the set fluctuation range.

8. The laundry treating apparatus according to claim 7, wherein the apparatus further comprises:

the first final-stage drying time length determining module is used for acquiring weight information of the dried clothes after judging that the clothes are in the final-stage drying stage, determining a first operation time length of the final-stage drying stage based on the weight information of the dried clothes, and sending the first operation time length to the drying control module;

and the drying control module controls the drying program to stop after the first running time length is reached.

9. The laundry treating apparatus according to claim 7, wherein the apparatus further comprises:

the second final-stage drying time length determining module is used for acquiring the drying temperature of the operation of the drying program after the final-stage drying stage is judged, determining a second operation time length of the drying stage based on the drying temperature, and sending the second operation time length to the drying control module;

and the drying control module controls the drying program to stop after the second running time length is reached.

10. The laundry treating apparatus according to claim 7, wherein the apparatus further comprises:

the third final drying time determining module is used for acquiring material information of the dried clothes after the final drying stage is judged, determining a third operation time of the final drying stage based on the material of the dried clothes, and sending the third operation time to the drying control module;

and the drying control module controls the drying program to stop after the third running time length is reached.

Background

When an existing clothes processing device, such as a clothes dryer, a washing and drying all-in-one machine and the like, executes a drying program, one way is that a user is required to set temperature and drying time, then washing clothes are automatically dried according to the set temperature and drying time, but the drying process is not intelligent enough, the drying temperature and drying time cannot be modified according to the actual conditions of the clothes, so that the clothes drying effect is not ideal enough, and the possibility of over-drying and insufficient drying degree exists; along with the design of stoving procedure is more intelligent, current stoving procedure can independently judge the stoving degree to adjust stoving temperature and stoving time in real time according to the stoving degree, reach and adjust in real time according to the clothing actual conditions, improve the technical purpose of stoving effect.

The intelligent drying judgment mode mainly comprises: humidity detection, temperature detection, and detection of a resistance value of a metal in contact with laundry. In the temperature detection method, for example, the amount of the dried clothes is judged by adopting a temperature sensor to detect the temperature of the discharged air or the inside of the drum, and then the drying time is corrected in real time according to the amount of the dried clothes, but in the temperature detection method, if the amount of the clothes is small and the water content is large, the amount of the clothes is judged to be large according to the temperature method, so that the drying time is corrected too long, and the possibility of excessive drying exists; the humidity detection chamber judges the drying degree of the clothes by adopting a mode of detecting the humidity in the discharged air or the drum by a humidity sensor, and corrects the drying time and/or the drying temperature in real time according to the drying degree, but in the humidity detection mode, when the drying is close to the end sound, the humidity change is small, the drying degree judgment is inaccurate, and the possibility of over-drying or insufficient drying degree exists; the resistance value of the metal contacting with the clothes is detected, for example, a metal shifting block is arranged in the drum, the metal shifting block contacts with the clothes, the resistance value is measured to judge the dryness and wetness degree of the clothes, but the method can only judge the drying degree of the surface of the clothes, and the dryness and wetness degree of the middle part or the agglomerated clothes is not accurately judged.

Disclosure of Invention

The invention aims to provide a drying judgment method of a clothes treatment device and the clothes treatment device, which utilize the characteristic that a variable frequency fan motor can feed back current/power, judge the drying stage of clothes by monitoring the power and current change of the variable frequency fan motor in the operation process of a drying program, do not need to additionally add elements such as a sensor and the like for judging the drying degree, ensure the function and reduce the manufacturing cost of the clothes treatment device.

The invention is realized by adopting the following technical scheme:

provided is a drying judgment method of a clothes treatment device, the clothes treatment device comprises:

a variable frequency fan motor and a drying program is arranged;

the method comprises the following steps:

after a drying program is started, a monitoring process is started to monitor the power and the load current of a variable frequency fan motor;

and judging the drying stage of the clothes according to the power change of the variable frequency fan motor and the fluctuation range of the load current.

Further, the drying stage of the clothes is judged according to the power change of the variable frequency fan motor and the fluctuation amplitude of the load current, and the drying stage comprises the following steps: judging from the starting of the drying program, when the power drops and exceeds a first set value and the fluctuation range of the load current exceeds a set fluctuation range, judging that the drying program is in an initial drying stage, and starting to judge from the initial drying stage, and when the power is maintained in a stable range and the fluctuation range of the load current exceeds the set fluctuation range, judging that the drying program is in a middle drying stage; and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed a second set value and the fluctuation range of the load current is in the set fluctuation range.

Further, after judging that the drying stage is in the final stage, the method further comprises the following steps: acquiring weight information of the dried clothes; determining a first operation time period of a final drying stage based on a weight of the dried laundry; and controlling the drying program to stop after the first running time period is reached.

Further, after judging that the drying stage is in the final stage, the method further comprises the following steps: acquiring a drying temperature for the operation of a drying program; determining a second operation time period of the drying stage based on the drying temperature; and controlling the drying program to stop after the second running time period is reached.

Further, after judging that the drying stage is in the final stage, the method further comprises the following steps: acquiring material information of the dried clothes; determining a third operation time length of a final drying stage based on the material of the dried clothes; and controlling the drying program to stop after the third running time period is reached.

It is proposed a laundry treating apparatus comprising:

a variable frequency fan motor;

a drying control module for executing a drying program;

the monitoring module is used for starting a monitoring process to monitor the power and the load current of the variable-frequency fan motor after the drying control module starts a drying program;

and the drying judgment module is used for judging the drying stage of the clothes according to the power change of the variable frequency fan motor and the fluctuation range of the load current.

Further, the drying judgment module specifically includes: the initial drying stage judging unit is used for judging that the drying program is in an initial drying stage when the power is reduced and exceeds a first set value and the fluctuation range of the load current exceeds a set fluctuation range from the start of the drying program; the middle drying stage judging unit is used for starting to judge from the initial drying stage, and judging that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds the set fluctuation range; and the final drying stage judging unit is used for judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power drops beyond the second set value and the fluctuation range of the load current is in the set fluctuation range.

Further, the apparatus further comprises: the first final-stage drying time length determining module is used for acquiring weight information of the dried clothes after judging that the clothes are in the final-stage drying stage, determining a first operation time length of the final-stage drying stage based on the weight information of the dried clothes, and sending the first operation time length to the drying control module; and the drying control module controls the drying program to stop after the first running time length is reached.

Further, the apparatus further comprises: the second final-stage drying time length determining module is used for acquiring the drying temperature of the operation of the drying program after the final-stage drying stage is judged, determining a second operation time length of the drying stage based on the drying temperature, and sending the second operation time length to the drying control module; and the drying control module controls the drying program to stop after the second running time length is reached.

Further, the apparatus further comprises: the third final drying time determining module is used for acquiring material information of the dried clothes after the final drying stage is judged, determining a third operation time of the final drying stage based on the material of the dried clothes, and sending the third operation time to the drying control module; and the drying control module controls the drying program to stop after the third running time length is reached.

Compared with the prior art, the invention has the advantages and positive effects that: according to the drying judgment method of the clothes treatment device and the clothes treatment device, after a drying program is started, a monitoring process is started, the power and the load current fed back by the variable frequency fan motor are monitored, and the drying stage of clothes is judged according to the power change and the fluctuation amplitude of the load current; at the initial stage of drying, clothes are low in temperature and in a temperature rising stage, the drying efficiency at the stage is low, the clothes are in a relatively humid stage and are just adhered together, the clothes are more and more uniform along with continuous rolling, the power is obviously reduced, the frequency conversion fan needs more circulating air at the stage, the work of the frequency conversion fan motor is more, the current and the power of the frequency conversion fan motor are both larger, and the fluctuation range of the load current during the period is larger; in the middle period of drying, the temperature of the clothes is high, the clothes and the clothes are relatively fluffy, the circulating air needed by the variable frequency fan is relatively less, the work of the variable frequency fan motor is relatively reduced, at the moment, the drying efficiency is high, but the temperature of the clothes is not greatly changed, the state of the clothes is not obviously changed, and the heat is mainly used for drying the moisture, so the power is basically maintained to be stable, but the fluctuation amplitude of the load current is large due to the large fluctuation of the circulating air in the period; at the final stage of drying, the clothes are totally dry, the residual moisture in the clothes at this stage is little, the drying efficiency is low, the temperature of the clothes is continuously increased, and the clothes are more and more fluffy, so that the variable frequency fan motor at this stage does less work and is in a slow descending stage, but the fluctuation of the circulating air is small during the period, so that the fluctuation amplitude of the load current is small; based on the analysis, the drying program can be judged in which stage of drying, and the variable frequency fan motor is an indispensable component of the variable frequency air conditioner.

Furthermore, when the drying program is judged to enter the final-stage drying stage, the invention enables the final-stage drying time to be related to the weight of the clothes by the technical means of acquiring the weight of the dried clothes and determining the operation time of the final-stage drying stage according to the weight of the dried clothes, thereby avoiding the situations of insufficient drying or excessive drying.

Furthermore, when the drying program is judged to enter the final-stage drying stage, the invention enables the final-stage drying time to be related to the drying temperature by the technical means of obtaining the drying temperature of the drying program and determining the operation time of the final-stage drying stage according to the drying temperature, thereby avoiding the situations of insufficient drying or excessive drying.

Furthermore, when the drying program is judged to enter the final drying stage, the invention enables the final drying time to be related to the weight and the material of the dried clothes by acquiring the weight and the material of the dried clothes and determining the operation time of the final drying stage based on the weight and the material of the dried clothes, thereby avoiding the condition of insufficient drying or excessive drying.

Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart illustrating a drying determination method of a clothes treating apparatus according to the present invention;

FIG. 2 is a schematic diagram of a laundry drying degree reflected based on feedback of a variable frequency fan motor according to the present invention;

fig. 3 is a flow chart illustrating a drying judgment of the clothes treating apparatus according to the first embodiment of the present invention;

fig. 4 is a flowchart illustrating a drying judgment of the laundry treating apparatus according to the second embodiment of the present invention;

fig. 5 is a flow chart illustrating a drying judgment of the laundry treating apparatus according to the third embodiment of the present invention;

fig. 6 is a flow chart illustrating a drying judgment of the laundry treating apparatus according to the fourth embodiment of the present invention;

fig. 7 is a functional architecture diagram of a laundry treating device according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The invention provides a drying judgment method of a clothes treatment device, and aims to provide a method for automatically judging the drying degree for the drying program of the clothes treatment device such as a clothes dryer, a washing and drying integrated machine and the like, without depending on elements such as a humidity sensor, a temperature sensor and the like, and monitoring is realized by combining the feedback power of a fan of a variable frequency fan and the load current, so that the drying effect is ensured, and the manufacturing cost of the clothes treatment device is reduced.

As shown in fig. 1, the drying control method of the laundry processing apparatus according to the present invention includes the following steps:

step S1: and starting a drying program.

The user sets or selects parameters such as drying temperature, material of the dried clothes and the like, the drying program is started, and after the drying program is started, the clothes treatment device can acquire the weight of the dried clothes through the pressure sensor or drive the rotary drum to rotate, and fuzzy weighing is carried out on the weight of the dried clothes based on centrifugal force.

Step S2: and starting a monitoring process to monitor the power and the load current of the variable frequency fan motor.

After the clothes processing device starts a drying program, a monitoring process is started, and the monitoring process is used for detecting the power fed back by the variable frequency fan motor and the load current.

Step S3: and judging the drying stage of the clothes according to the power change of the variable frequency fan motor and the fluctuation range of the load current.

The invention judges the drying stage of the clothes based on the characteristics of the feedback power and the load current of the variable frequency fan motor and the monitoring of the power change of the variable frequency fan motor and the fluctuation range of the load current, does not need to additionally add devices such as a temperature sensor, a humidity sensor and the like for judging the drying degree, ensures the function and reduces the manufacturing cost of the clothes treatment device.

As shown in fig. 2, at the initial stage of drying after the clothes processing device starts the drying program, the clothes temperature is relatively low, and the clothes are in a temperature rising stage, the drying efficiency is relatively low at this stage, the clothes are in a relatively humid stage, and the clothes are just tightly attached together, and are more and more uniform along with continuous rolling, the power has a significant reduction amplitude, the frequency conversion fan needs more circulating air at this stage, the frequency conversion fan motor does more work, the current and the power of the frequency conversion fan motor are both relatively large, and the fluctuation amplitude of the load current during this stage is relatively large.

In the middle period of drying, the temperature of the clothes is high, the clothes and the clothes are relatively fluffy, the circulating air needed by the variable frequency fan is relatively less, the work of the variable frequency fan motor is relatively reduced, at the moment, the drying efficiency is high, but the temperature of the clothes cannot be greatly changed, the state of the clothes is not obviously changed, and the heat is mainly used for drying the moisture, so that the power is basically maintained to be stable, but the fluctuation range of the load current is large due to the large fluctuation of the circulating air in the period.

At the final stage of drying, the clothes are totally dry, the residual moisture in the clothes at the stage is little, the drying efficiency is low, the temperature of the clothes is continuously increased, and the clothes are fluffy, so that the variable frequency fan motor at the stage does less work and is in a slow descending stage, but the fluctuation of the circulating air is small during the period, so that the fluctuation range of the load current is small.

Based on the analysis, the drying program can be judged in which stage of drying, and the variable frequency fan motor is an indispensable component of the variable frequency air conditioner.

The drying determination method of the laundry processing apparatus according to the present invention will be described in detail with reference to several specific embodiments.

Example one

The embodiment provides a drying judgment method for a clothes dryer, which comprises the following steps:

step S31: the user starts the drying process.

The user sets or selects parameters such as drying temperature, material of the dried clothes and the like, a drying program is started, and after the drying program is started, the clothes dryer can acquire the weight of the dried clothes through the pressure sensor or drive the rotary drum to rotate, and fuzzy weighing is carried out on the weight of the dried clothes based on centrifugal force.

Step S32: and starting a monitoring process to monitor the power and the load current of the variable frequency fan motor.

After the dryer starts the drying program, a monitoring process is started, and the monitoring process is used for detecting the power fed back by the variable frequency fan motor and the load current.

Step S33: and judging from the starting of the drying program, and judging that the drying program is in an initial drying stage when the power is reduced beyond a first set range and the fluctuation range of the load current exceeds a set fluctuation range.

In the initial drying stage after the dryer starts the drying program, the clothes temperature is low, the clothes are in a temperature rising stage, the drying efficiency in the stage is low, the clothes are in a relatively humid stage and are just tightly attached together, the clothes are more and more uniform along with continuous rolling, the power can have an obvious reduction amplitude, the frequency conversion fan needs more circulating air in the stage, the frequency conversion fan motor does more work, the current and the power of the frequency conversion fan motor are both large, and the fluctuation amplitude of the load current in the period is large.

Therefore, in this embodiment, a first set value a is preset for the power, and when the power decreases from the value B at the beginning of the drying program starting to B-a, it is determined that the power has an obvious decrease; and presetting a set fluctuation range for the fluctuation range of the load current, wherein the fluctuation range of the load current exceeds the set fluctuation range, and the fluctuation range of the load current is considered to be larger.

Step S34: and starting the initial drying stage to judge that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds a set fluctuation range.

In the middle period of drying, the temperature of the clothes is high, the clothes and the clothes are relatively fluffy, the circulating air needed by the variable frequency fan is relatively less, the work of the variable frequency fan motor is relatively reduced, at the moment, the drying efficiency is high, but the temperature of the clothes cannot be greatly changed, the state of the clothes is not obviously changed, and the heat is mainly used for drying the moisture, so that the power is basically maintained to be stable, but the fluctuation range of the load current is large due to the large fluctuation of the circulating air in the period.

The power described in this embodiment is maintained within a stable range, and the fluctuation range of the power is regarded as being within a preset range, so that the power change is in a stable state as a whole.

In conjunction with the set fluctuation range preset in step S33, when the fluctuation range of the load current exceeds the set fluctuation range, it is regarded that the fluctuation range of the load current is large.

Step S35: and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed the second set value and the fluctuation range of the load current is in the set fluctuation range.

At the final stage of drying, the clothes are totally dry, the residual moisture in the clothes at the stage is little, the drying efficiency is low, the temperature of the clothes is continuously increased, and the clothes are fluffy, so that the variable frequency fan motor at the stage does less work and is in a slow descending stage, but the fluctuation of the circulating air is small during the period, so that the fluctuation range of the load current is small.

Therefore, the present embodiment presets a second setting value C for the power, and when the power decreases from D at the beginning of the middle drying stage to D-C, the power is regarded as decreasing slowly.

In conjunction with the set fluctuation range preset in step S33, the fluctuation range of the load current is within the set fluctuation range, and the fluctuation range of the load current is regarded as small.

Carry out two

The embodiment provides a drying judgment method for a washing and drying integrated machine, which comprises the following steps:

step S41: the user starts the washing and drying integrated program.

A user sets or selects parameters such as washing temperature, washing mode, drying temperature, material of dried clothes and the like, a washing and drying integrated program is started, the washing program is executed firstly, after the washing program is started, the washing and drying integrated machine can acquire the weight of the dried clothes through a pressure sensor, or the weight of the dried clothes is subjected to fuzzy weighing based on centrifugal force separation by driving a rotary drum to rotate.

Step S42: the washing process is performed until the washing is completed.

The partial washing control can be performed according to any washing control method, and the embodiment is not particularly limited.

Step S43: and starting a drying program, and starting a monitoring process to monitor the power and the load current of the variable-frequency fan motor.

And after the washing and drying all-in-one machine starts a drying program, starting a monitoring process, wherein the monitoring process is used for detecting the power fed back by the variable frequency fan motor and the load current.

Step S44: and judging from the starting of the drying program, and judging that the drying program is in an initial drying stage when the power is reduced beyond a first set range and the fluctuation range of the load current exceeds a set fluctuation range.

In the initial drying stage after the washing and drying all-in-one machine starts a drying program, the temperature of clothes is low, the clothes are in a temperature rising stage, the drying efficiency in the stage is low, the clothes are in a relatively humid stage and are just tightly attached together, the clothes can be more and more uniform along with continuous rolling, the power can have an obvious reduction amplitude, the frequency conversion fan needs more circulating air in the stage, the work of the frequency conversion fan motor is more, the current and the power of the frequency conversion fan motor are larger, and the fluctuation amplitude of the load current in the period is larger.

Therefore, in this embodiment, a first set value a is preset for the power, and when the power decreases from the value B at the beginning of the drying program starting to B-a, it is determined that the power has an obvious decrease; and presetting a set fluctuation range for the fluctuation range of the load current, wherein the fluctuation range of the load current exceeds the set fluctuation range, and the fluctuation range of the load current is considered to be larger.

Step S45: and starting the initial drying stage to judge that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds a set fluctuation range.

In the middle period of drying, the temperature of the clothes is high, the clothes and the clothes are relatively fluffy, the circulating air needed by the variable frequency fan is relatively less, the work of the variable frequency fan motor is relatively reduced, at the moment, the drying efficiency is high, but the temperature of the clothes cannot be greatly changed, the state of the clothes is not obviously changed, and the heat is mainly used for drying the moisture, so that the power is basically maintained to be stable, but the fluctuation range of the load current is large due to the large fluctuation of the circulating air in the period.

The power described in this embodiment is maintained within a stable range, and the fluctuation range of the power is regarded as being within a preset range, so that the power change is in a stable state as a whole.

In conjunction with the set fluctuation range preset in step S44, when the fluctuation range of the load current exceeds the set fluctuation range, it is regarded that the fluctuation range of the load current is large.

Step S46: and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed the second set value and the fluctuation range of the load current is in the set fluctuation range.

At the final stage of drying, the clothes are totally dry, the residual moisture in the clothes at the stage is little, the drying efficiency is low, the temperature of the clothes is continuously increased, and the clothes are fluffy, so that the variable frequency fan motor at the stage does less work and is in a slow descending stage, but the fluctuation of the circulating air is small during the period, so that the fluctuation range of the load current is small.

Therefore, the present embodiment presets a second setting value C for the power, and when the power decreases from D at the beginning of the middle drying stage to D-C, the power is regarded as decreasing slowly.

In conjunction with the set fluctuation range preset in step S44, the fluctuation range of the load current is within the set fluctuation range, and the fluctuation range of the load current is regarded as small.

Step S47: acquiring weight information of the dried clothes.

When it is determined that the drying program enters the final drying stage, the embodiment provides a means to control the drying time of the final drying stage, and associate the final drying time with the weight of the clothes to be dried, so that the drying is in accordance with the actual condition of the clothes, and the drying time is adaptively adjusted, thereby avoiding the condition of insufficient drying or excessive drying.

Step S48: a first operation time period of a final drying phase is determined based on a weight of the dried laundry.

In this embodiment, the weight of the dried laundry is stored after the user sets the washing parameter and the drying parameter at step S41, and is read for use at this step.

Step S49: and controlling the drying program to stop after the first running time period is reached.

After the drying program enters the final drying stage, the present embodiment controls the operation duration of the final drying stage according to the first operation duration calculated in step S48, and after the first operation duration is reached, controls the drying program to end.

EXAMPLE III

The embodiment is implemented based on the implementation two, and the difference is that after entering the final drying phase, the embodiment provides a second means to control the drying time duration of the final drying phase, associate the final drying time duration with the drying temperature of the drying program, and adaptively adjust the drying time duration, so as to avoid the situations of insufficient drying or excessive drying.

Specifically, as shown in fig. 5, the method includes the following steps:

step S51: the user starts the washing and drying integrated program.

Step S52: the washing process is performed until the washing is completed.

Step S53: and starting a drying program, and starting a monitoring process to monitor the power and the load current of the variable-frequency fan motor.

Step S54: and judging from the starting of the drying program, and judging that the drying program is in an initial drying stage when the power is reduced beyond a first set range and the fluctuation range of the load current exceeds a set fluctuation range.

Step S55: and starting the initial drying stage to judge that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds a set fluctuation range.

Step S56: and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed the second set value and the fluctuation range of the load current is in the set fluctuation range.

Step S57: and acquiring the drying temperature of the drying program.

In this embodiment, the drying temperature of the drying program is set and stored in the drying parameter set by the user in step S51, and read and used in this step, or is the drying temperature when the drying program enters the final drying stage after performing intelligent dynamic adjustment according to the weight, material, etc. of the dried clothes in the drying process.

Step S58: a second operation time period of the final drying stage is determined based on the drying temperature.

Step S59: and controlling the drying program to stop after the second running time period is reached.

After the drying program enters the final drying stage, the present embodiment controls the operation duration of the final drying stage according to the second operation duration calculated in step S58, and after the second operation duration is reached, controls the drying program to end.

Example four

The present embodiment is implemented on the basis of the second or third implementation, and is different in that after the last drying phase is entered, the present embodiment provides a third means to control the drying time of the last drying phase, associate the last drying time with the material of the clothes to be dried, so that the drying is in accordance with the actual condition of the clothes, and adaptively adjust the drying time, thereby avoiding the occurrence of insufficient drying or excessive drying.

Specifically, as shown in fig. 6, the method includes the following steps:

step S61: the user starts the washing and drying integrated program.

Step S62: the washing process is performed until the washing is completed.

Step S63: and starting a drying program, and starting a monitoring process to monitor the power and the load current of the variable-frequency fan motor.

Step S64: and judging from the starting of the drying program, and judging that the drying program is in an initial drying stage when the power is reduced beyond a first set range and the fluctuation range of the load current exceeds a set fluctuation range.

Step S65: and starting the initial drying stage to judge that the drying program is in the middle drying stage when the power is maintained in a stable range and the fluctuation range of the load current exceeds a set fluctuation range.

Step S66: and judging from the middle drying stage, and judging that the drying program is in the final drying stage when the power is reduced to exceed the second set value and the fluctuation range of the load current is in the set fluctuation range.

Step S67: and acquiring material information of the dried clothes.

In this embodiment, the material information of the dried clothes is set by the user in step S61, and the washing parameters and the drying parameters are set and stored, and are read for use in this step, or determined and stored for use based on identification technology before the washing program is started.

Step S68: and determining a third operation time length of the final drying stage based on the material of the clothes.

Step S69: and controlling the drying program to stop after the third running time period is reached.

After the drying program enters the final drying stage, the present embodiment controls the operation duration of the final drying stage according to the third operation duration calculated in step S68, and after the third operation duration is reached, controls the drying program to end.

Of course, based on the drying time calculation manners of the final drying stage given in the second to fourth embodiments, those skilled in the art may combine the three measures according to actual requirements, and adjust the actual operation time of the final drying stage based on the combined condition, which is not described in detail in the embodiments of the present invention.

In some embodiments of the present invention, the drying determination method of the laundry processing apparatus mentioned above proposes a laundry processing apparatus for performing control thereof, as shown in fig. 7, including a variable frequency fan motor 71, a drying control module 72, a monitoring module 73 and a drying determination module 74.

The drying control module 72 is used for executing a drying program; the monitoring module 73 is used for starting a monitoring process to monitor the power and the load current of the variable frequency fan motor after the drying control module starts the drying program; the drying judgment module 74 is used for judging the drying stage of the clothes according to the power variation of the variable frequency fan motor and the fluctuation range of the load current.

In some embodiments of the present invention, the drying determining module 74 specifically includes: an initial drying stage judgment unit 741, a middle drying stage judgment unit 742 and a final drying stage judgment unit 743, where the initial drying stage judgment unit 741 is configured to, from the start of the drying program, judge that the drying program is in an initial drying stage when the power drops beyond a first set value and the fluctuation range of the load current exceeds a set fluctuation range; the middle drying stage determining unit 742 is configured to start determining from the initial drying stage, and determine that the drying program is in the middle drying stage when the power is maintained within the stable range and the fluctuation range of the load current exceeds the set fluctuation range; the final drying stage determining unit 743 is configured to determine, from the middle drying stage, that the drying program is in the final drying stage when the power drops beyond the second setting value and the fluctuation range of the load current is within the set fluctuation range.

In some embodiments of the present invention, the laundry processing apparatus further includes a first terminal drying time period determining module 75, configured to, after determining that the laundry processing apparatus is in the terminal drying stage, obtain weight information of the dried laundry, determine a first operation time period of the terminal drying stage based on the weight information of the dried laundry, and send the first operation time period to the drying control module; the drying control module 72 controls the drying process to stop after the first operation time period is reached.

In some embodiments of the present invention, the laundry treating apparatus further includes a second terminal drying time period determining module 76 for acquiring a drying temperature at which the drying program operates after the terminal drying phase is judged, determining a second operation time period of the drying phase based on the drying temperature, and transmitting the second operation time period to the drying control module; the drying control module 72 controls the drying process to stop after the second operation time period is reached.

In some embodiments of the present invention, the laundry processing apparatus further includes a third final drying time determining module 77, configured to, after determining that the laundry processing apparatus is in the final drying stage, obtain material information of the dried laundry, determine a third operation time of the final drying stage based on the material of the dried laundry, and send the third operation time to the drying control module; the drying control module 72 controls the drying process to stop after the third operation time period is reached.

The specific manner of determining the drying stage by the clothes treatment device has been described in detail in the above embodiments, and is not repeated herein.

It should be noted that, in a specific implementation process, the control part may be implemented by a processor in a hardware form executing a computer execution instruction in a software form stored in a memory, which is not described herein, and all programs corresponding to actions executed by the control part may be stored in a computer readable storage medium of the system in a software form, so that the processor can call and execute operations corresponding to the above modules.

The computer-readable storage media above may include volatile memory, such as random access memory; non-volatile memory, such as read-only memory, flash memory, a hard disk, or a solid state disk; combinations of the above categories of memory may also be included.

The processor referred to above may also be referred to collectively as a plurality of processing elements. For example, the processor may be a central processing unit, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or the like. A general-purpose processor may be a microprocessor, or may be any conventional processor or the like, or may be a special-purpose processor.

It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.