CN112647264B

CN112647264B - Control method and device of clothes treatment device and clothes treatment device

Info

Publication number: CN112647264B
Application number: CN201910916040.3A
Authority: CN
Inventors: 黄龙勤
Original assignee: Wuxi Filin Electronics Co Ltd
Current assignee: Wuxi Filin Electronics Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2023-03-24
Anticipated expiration: 2039-09-26
Also published as: CN112647264A

Abstract

The invention provides a control method and a control device of a clothes treatment device and the clothes treatment device, wherein the control method comprises the following steps: executing a drying process, and collecting the temperature in an air duct of the clothes treatment device; judging whether the temperature is less than or equal to a first temperature threshold value; determining that the temperature is less than or equal to a first temperature threshold value, and judging whether the temperature increment of the temperature in the first time length threshold value is less than or equal to an increment threshold value; and determining that the temperature increment is smaller than or equal to the increment threshold value, and generating alarm information of the abnormity of the heating device. By implementing the technical scheme, on one hand, the excessive consumption of electric energy is prevented, and on the other hand, the damage to other parts of the clothes processing device caused by the continuous overlong abnormal clothes drying process is also prevented.

Description

Control method and device of clothes treatment device and clothes treatment device

Technical Field

The present invention relates to the technical field of washing machines, and more particularly, to a control method of a laundry treatment apparatus, a control apparatus of a laundry treatment apparatus, and a computer-readable storage medium.

Background

In the related art, a heating pipe and a fan are arranged in a washing and drying integrated washing machine, the heating pipe is used for heating air, the heated air is driven by the fan, and warm air is blown to a wet clothes area to dry clothes, but the washing and drying integrated washing machine has the following defects:

if the heating pipe is damaged or the wiring is not normal, the alarm cannot be given to inform a user that the heating pipe is abnormal.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

Therefore, an object of the present invention is to provide a new control method, wherein if it is detected that the increment of the temperature of the air duct within the preset time period is less than or equal to the temperature increment threshold, it is possible to determine that the heating device is working abnormally, generate an alarm message indicating that the current clothes drying process is abnormal, and further timely end the abnormal clothes drying process, so as to prevent excessive consumption of electric energy on the one hand and prevent the abnormal clothes drying process from causing damage to other components of the clothes processing device due to too long duration.

Another object of the present invention is to provide a control device, a computer readable storage medium and a laundry treating apparatus, respectively.

To achieve at least one of the above objects, according to a first aspect of the present invention, there is provided a control method of a laundry treating apparatus, comprising: executing a drying process, and collecting the temperature in an air duct of the clothes treatment device; judging whether the temperature is less than or equal to a first temperature threshold value; determining that the temperature is less than or equal to a first temperature threshold value, and judging whether the temperature increment of the temperature in the first time length threshold value is less than or equal to an increment threshold value; and determining that the temperature increment is smaller than or equal to the increment threshold value, and generating alarm information of the abnormity of the heating device.

In the above technical solution, before collecting the temperature in the air duct of the clothes treatment device, the method further includes: responding to a drying instruction, and controlling a temperature sensor to perform temperature sampling according to a preset acquisition frequency; judging whether the temperature sampling belongs to a normal temperature range; and if the temperature sampling is determined not to belong to the normal temperature range, generating alarm information of the abnormal temperature sensor and stopping the drying process.

When it is determined that the temperature sensor is abnormal based on the above manner, it is also necessary to stop the drying and alarm.

In any of the above technical solutions, the temperature is the temperature of the air inlet of the air duct of the clothes treatment device, and before the temperature in the air duct of the clothes treatment device is collected, the method further includes: collecting the temperature of an air outlet of an air duct of the clothes treatment device; judging whether the temperature of the air outlet is greater than a second temperature threshold value or not; determining that the temperature is greater than a second temperature threshold value, closing the heating device, and continuously collecting the temperature of the air outlet; determining that the temperature of the tuyere is lower than a third temperature threshold value, and restarting the heating device; wherein the second temperature threshold is greater than the third temperature threshold.

In any of the above technical solutions, the method further includes: determining that the temperature is greater than a first temperature threshold, and acquiring a drying curve of a drying process and the accumulated starting time of a heating device; judging whether the drying curve accords with a preset curve and/or whether the accumulated starting time reaches a second time threshold; and (3) determining that the drying curve accords with a preset curve, and/or controlling to close the heating device to enter a cooling process when the accumulated opening time reaches a second time threshold.

In any of the above technical solutions, the method further includes: detecting whether the clothes processing device reaches a temperature balance state; determining that a temperature balance state is reached, and acquiring a difference value between the current temperature and a balance temperature value; the balance temperature value is a temperature value corresponding to the temperature balance state; and determining that the difference value is larger than the temperature difference threshold value, and controlling to close the heating device to enter a cooling process.

In any of the above technical solutions, detecting whether the laundry treating apparatus reaches a temperature equilibrium state includes: determining that the temperature is greater than a first temperature threshold value, and detecting whether the temperature rises to an equilibrium temperature value; determining that the temperature rises to an equilibrium temperature value, and acquiring continuous maintenance time for reaching the equilibrium temperature value; and determining that the continuous maintaining time period is greater than or equal to the third time period threshold value, determining that the clothes treatment device reaches a temperature balance state.

In any one of the above technical scheme, be provided with drying fan in clothes treatment device's the wind channel and be connected with the condensation pipeline, the last control valve that is provided with of condensation pipeline, the cooling process includes: controlling to open the control valve and the drying fan, and conveying condensed gas into an inner cylinder of the clothes treatment device through a condensing pipeline and an air duct in sequence so as to cool the inner cylinder; and determining that the opening duration of the control valve is greater than or equal to a fourth time threshold, and controlling to close the drying fan and the control valve.

In any of the above technical solutions, the laundry treatment apparatus further includes a driving motor and a drain pump, and the laundry treatment apparatus performs a laundry drying process, specifically including: responding to a drying instruction, controlling to start a driving motor to drive an inner cylinder to rotate according to a first duty ratio signal; and controlling the drainage pump to start and stop according to the second duty ratio signal.

In any of the above technical solutions, the laundry processing apparatus for executing a laundry drying process specifically further includes: in the clothes drying process, if the temperature is determined to rise to be higher than the fourth temperature threshold value, the opening and closing of the control valve are controlled according to the third duty ratio signal,

wherein the first temperature threshold is less than the fourth temperature threshold.

According to a second aspect of the present invention, there is provided a control device of a laundry treating device, comprising: the acquisition module is used for executing a drying process and acquiring the temperature in the air duct of the clothes treatment device; the judging module is used for judging whether the temperature is less than or equal to a first temperature threshold value; determining that the temperature is less than or equal to the first temperature threshold, and judging whether the temperature increment of the temperature within a first time length threshold is less than or equal to an increment threshold; and the generating module is used for determining that the temperature increment is smaller than or equal to the increment threshold value and generating alarm information of abnormity of the heating device.

According to a third aspect of the present invention, there is provided a laundry treating apparatus comprising: a processor; a memory for storing executable instructions of a processor, wherein the processor is configured to implement the steps of the control method according to any of the above aspects of the first aspect when executing the executable instructions stored in the memory.

According to a fourth aspect of the present invention, a computer-readable storage medium is proposed, on which a computer program is stored, which computer program, when being executed by said processor, realizes the steps of the control method according to any one of the above-mentioned solutions of the first aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view illustrating a structure of a laundry treating apparatus according to an embodiment of the present invention;

FIG. 2 shows a flow diagram of a control method of an embodiment of the invention;

FIG. 3 shows a flow chart diagram of a control method of another embodiment of the invention;

FIG. 4 shows a flow chart diagram of a control method of yet another embodiment of the present invention;

FIG. 5 shows a flow diagram of a cooling process of an embodiment of the present invention;

FIG. 6 shows a flow diagram of a control method of one embodiment of the invention;

FIG. 7 shows a schematic block diagram of a control device of one embodiment of the present invention;

fig. 8 shows a schematic block diagram of a laundry treating apparatus according to an embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A control method and apparatus of a laundry treating apparatus and a laundry treating apparatus according to embodiments of the present invention are described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a laundry treating apparatus according to an embodiment of the present invention.

As shown in fig. 1, the laundry treating apparatus includes an inner tub 102 and an outer tub nested with each other, and an air duct 104 can be defined in a region between the inner tub 102 and the outer tub, and the air duct 104 is used for transferring heat required for drying when a drying course is performed. A drying fan 106 and a heating device 108 arranged opposite to the drying fan 106 are arranged in the air duct 104, in the clothes drying process, the heating device 108 is started to heat the air in the air duct, the drying fan 106 is started, and the heat heated by the heating device 108 is blown into the inner drum 102 through the air duct 104, so that the clothes are dried.

Alternatively, the heating device 108 may be a heater; the drying fan 106 may be a blower.

A first temperature sensor 110 is arranged between the drying fan 106 and the heating device 108, a second temperature sensor 112 is arranged at an air outlet area of the air duct 104, the first temperature sensor 110 is used for acquiring the temperature of an air inlet of the air duct 104, and the second temperature sensor 112 is used for acquiring the temperature of an air outlet of the air duct 104.

Optionally, the laundry treating apparatus further includes a driving motor (not shown) and a drain pump (not shown). The driving motor is used for controlling the inner barrel 102 to rotate according to the first duty ratio signal and controlling the drainage pump to start and stop according to the second duty ratio signal. Wherein, the first duty ratio signal is the ratio of the period of rotation time to the period of stop time of the inner cylinder 102; the second duty cycle signal is a ratio of an opening duration to a closing duration of the drain pump cycle. The drain pump is used for draining water generated in the washing process and the drying process.

Optionally, the laundry treatment apparatus further includes a condensing pipeline (not shown), and the condensing pipeline is provided with a control valve, and when the control valve is opened, the condensing pipeline generates condensed gas. The condensing pipeline is connected to the drying fan 106, and when the drying fan 106 is turned on, the condensing gas is delivered to the inner cylinder 102 through the air duct 104 to cool the temperature of the inner cylinder.

Fig. 2 is a flowchart illustrating a control method of a laundry treatment apparatus according to an embodiment of the present invention.

As shown in fig. 2, the method comprises the steps of:

step 202, executing a drying process, and collecting the temperature in the air duct of the clothes treatment device.

The temperature of the air duct may be a temperature of at least one location within the air duct, i.e. at least one temperature sensor is provided within the air duct to collect temperature signals.

As shown in fig. 1, as a possible implementation manner, the temperature in the air duct is the air inlet temperature of the air duct collected by the first temperature sensor 110.

As another possible implementation manner, the temperature in the air duct is the air outlet temperature of the air duct collected by the second temperature sensor 112.

At step 204, it is determined whether the temperature is less than or equal to a first temperature threshold.

Before or in the initial stage of the drying process, the temperature in the air duct is relatively low, and after being heated by the heating device, the temperature is obviously increased.

Therefore, after the temperature in the air duct is collected, the relationship between the collected temperature and the first temperature threshold value is judged, so that the time point of collecting the temperature can be determined.

In addition, for the working condition of continuously executing the drying process, after the clothes processing device completes one drying process, a longer process is needed when the temperature in the inner cylinder of the clothes processing device and the air duct communicated with the clothes processing device drops below a certain temperature (such as the first temperature threshold), if the temperature does not drop below the certain temperature, the next drying process is started to be executed, at this time, if the temperature in the air duct is higher, even if the heating device works normally, the temperature increment is still smaller than or equal to the increment threshold, and if an alarm is given at this time, a false alarm phenomenon occurs, so that before the temperature increment is detected, the relationship between the temperature in the air duct and the first temperature threshold is detected, compared with the mode of only detecting the relationship between the temperature change amplitude and the set value in the related technology, the accuracy of abnormal detection can be improved, and the probability of abnormal false alarm is reduced.

Wherein, the first temperature threshold is used for the temperature threshold before the drying process starts or in the initial stage.

As a possible implementation, if the temperature of the air inlet of the air duct is collected, the first temperature threshold is 34 ℃ to 36 ℃, preferably 35 ℃.

As another possible implementation manner, if the temperature of the air outlet of the air duct is collected, the first temperature threshold is 40 ℃ to 45 ℃, and preferably 40 ℃.

In step 206, it is determined that the temperature is less than or equal to the first temperature threshold, and it is determined whether the temperature increase within the first time threshold is less than or equal to the increase threshold.

Optionally, the first time threshold is 40 minutes and the incremental threshold is 2 ℃.

After the collected temperature is determined to be smaller than or equal to the first temperature threshold value, the temperature of the current position in the air duct is collected again after the first time length threshold value, and the relation between the increment of the temperature of the current position in the first time length threshold value and the increment threshold value is judged.

As a possible implementation manner, the temperature collected by the first temperature sensor 110 when the drying process is started is 30 ℃, after 40 minutes, the temperature collected by the first temperature sensor 110 again is 31 ℃, and the temperature increment of the air inlet of the air duct is 1 ℃ within 40 minutes after the drying process is started.

As another possible implementation manner, the temperature collected by the second temperature sensor 112 during the preheating of the drying process is 40 ℃, after 40 minutes, the temperature collected by the second temperature sensor 112 again is 42 ℃, and then the temperature increment of the air outlet of the air duct is 2 ℃ within 40 minutes of the drying process.

And step 208, determining that the temperature increment is smaller than or equal to the increment threshold, and generating alarm information of heating device abnormity.

And determining that the temperature increment acquired in the first time period is less than or equal to an increment threshold, and indicating that the temperature increase in the air duct is abnormal in the first time period threshold, so that the heating device in the air duct is indirectly indicated to be abnormal, generating alarm information of the abnormal heating device, and reminding a user that the heating device of the clothes processing device is abnormal, and stopping the drying process in time.

In the control method of the clothes treatment device, the drying process is executed, and the temperature in the air channel of the clothes treatment device is collected; judging whether the temperature is less than or equal to a first temperature threshold value; determining that the temperature is less than or equal to a first temperature threshold value, and judging whether the temperature increment of the temperature in the first time length threshold value is less than or equal to an increment threshold value; and determining that the temperature increment is smaller than or equal to the increment threshold, generating alarm information of the abnormity of the heating device, prompting that the current clothes drying process is abnormal, and further timely finishing the abnormal clothes drying process, so that on one hand, the excessive consumption of electric energy is prevented, and on the other hand, the damage to other parts of the clothes processing device caused by the continuous overlong abnormal clothes drying process is also prevented.

Based on the previous embodiment, whether the heating device is abnormal is determined through the temperature collected by the temperature sensor, and in order to more accurately determine whether the heating device is abnormal, whether the temperature sensor is abnormal or not is determined before the determination, so that the collected temperature is abnormal, and the specific process is shown in fig. 3. Fig. 3 is a flowchart illustrating another control method of a laundry treating apparatus according to an embodiment of the present invention.

As shown in fig. 3, before the step 202, the method may include the steps of:

and 302, responding to a drying instruction, and controlling a temperature sensor to perform temperature sampling according to a preset acquisition frequency.

And when receiving the drying instruction, responding to the drying instruction, and controlling the temperature sensor to acquire the temperature in the air channel according to the preset acquisition frequency.

Optionally, the preset acquisition frequency is once every 10 milliseconds, and the acquisition time duration is 1 second.

Step 304, judging whether the temperature sampling belongs to a normal temperature range.

The determination of the normal temperature range may include the following:

as a possible implementation manner, a device capable of acquiring a weather forecast of the current geographical location is provided on the clothes treatment device, and a temperature interval of the acquired weather forecast of the current geographical location on the day is set as a normal temperature range. Since the temperature sampling is collected in response to the drying instruction, the collected temperature should be the ambient temperature in the present case.

As another possible implementation manner, after the clothes processing apparatus completes the drying process, the temperature in the air duct may need to be lowered to the ambient temperature after a long time, so that the time for the clothes processing apparatus to execute the drying process last time is first obtained, and the normal temperature range is determined according to the time length until the last drying process is finished.

As a third possible implementation, the normal temperature ranges in different seasons are determined according to a large number of experiments, the correspondence between the seasons and the normal temperature ranges is stored in advance, and the normal temperature ranges are determined according to the correspondence stored in advance after the current season is determined.

And step 306, if the temperature sampling is determined not to belong to the normal temperature range, generating abnormal alarm information of the temperature sensor and stopping the drying process.

And when a plurality of temperature samples acquired in the acquisition time length are determined not to belong to the normal temperature range, indicating that the current temperature sensor is abnormal, generating alarm information of the abnormal temperature sensor, and stopping the drying process.

Optionally, determining that the temperature sample does not belong to the normal temperature range includes: when a preset number of temperature samples in the collected plurality of temperature samples do not belong to the normal temperature range, determining that the temperature samples do not belong to the normal temperature range; or when the temperature samples with the preset proportion in the collected multiple temperature samples do not belong to the normal temperature range, determining that the temperature samples do not belong to the normal temperature range.

In the control method of the clothes treatment device, the temperature sensor in the air duct is controlled according to the preset collection frequency to collect the temperature, whether the temperature sensor works normally or not is detected by combining the preset normal temperature range, the probability that the temperature increment in the first time threshold is smaller than or equal to the increment threshold due to the abnormality of the temperature sensor in the embodiment shown in fig. 2 is further reduced, and therefore the error alarm information of the heating device is generated.

Based on the laundry treatment apparatus shown in fig. 1, fig. 4 is a schematic flow chart of another control method of a laundry treatment apparatus according to an embodiment of the present invention. As shown in fig. 4, the control method includes the following steps:

and step 401, responding to a drying instruction, controlling to start a driving motor to drive an inner cylinder to rotate according to a first duty ratio signal, and controlling a drainage pump to start according to a second duty ratio signal.

After the clothes processing device receives the drying instruction, the driving motor is controlled to be started, and the inner drum is controlled to rotate according to the first duty ratio signal, so that clothes in the inner drum are shaken up. The first duty cycle signal is a ratio between a rotation time period and a stop time period of the inner cylinder in one cycle. Optionally, the inner cylinder rotates at a rotation speed of 46rpm, the first duty ratio signal is 4, the rotation time of the inner cylinder in one period is 20 seconds, and the stop time is 5 seconds. The inner drum continues to run according to the cycle.

Because a small amount of moisture can be generated in the drying process, when the inner drum is driven to rotate, the drainage pump is also controlled to start and stop according to a second duty ratio signal, and the second duty ratio signal is the ratio of the starting time length and the stopping time length of the drainage pump in one period. Optionally, the second duty cycle signal is half, and the drain pump is turned on for 10 seconds and turned off for 20 seconds in one period.

It should be added that when the driving motor drives the inner cylinder to rotate, the drying fan is turned on, and the heating device is turned on at the same time to heat the air in the air duct, so as to ensure a good drying effect.

Step 402, collecting the temperature of an air outlet of an air duct of the clothes treatment device.

As shown in the laundry treating apparatus of fig. 1, the temperature of the air outlet in the air duct is collected by the second temperature sensor 112.

Step 403, determining whether the temperature of the air outlet is greater than a second temperature threshold.

After heating device opened, the temperature that second temperature sensor 112 gathered can constantly rise, carries out the comparison with the air outlet temperature and the second temperature threshold value of gathering to guarantee that the temperature in the wind channel is in controllable scope, the condition of high temperature can not appear.

Optionally, the second temperature threshold is 100 ℃.

And step 404, determining that the temperature is greater than the second temperature threshold, closing the heating device, and continuously collecting the temperature of the air outlet.

When the temperature of the air outlet is higher than the second temperature threshold, it is determined that the temperature in the air duct is too high, and in order to protect the safety of devices in the clothes processing device and prevent the damage to the clothes caused by the too high temperature of the inner drum, the heating device is turned off to reduce the heat blown into the inner drum by the drying fan 106. Meanwhile, after the heating device is closed, the temperature of the air outlet is continuously collected.

And step 405, determining that the temperature of the tuyere is lower than a third temperature threshold value, and restarting the heating device.

Wherein the second temperature threshold is greater than the third temperature threshold.

After closing heating device, the air outlet temperature can slowly reduce, in order to guarantee the heat in the inner tube, when the air outlet temperature was less than the third temperature threshold value, restarted heating device, continued the heating to the air in the wind channel. And meanwhile, continuously acquiring the temperature of the air outlet, and executing the step 403, wherein the preset time is executed in such a circulating way to ensure that the heat input into the inner barrel can be stabilized.

Alternatively, the third temperature threshold is preferably 95 ℃ and the preset time period is preferably 3 minutes.

Step 406, collecting the temperature of an air inlet in the air duct of the clothes treatment device.

As shown in the laundry treating apparatus of fig. 1, the temperature of the air inlet in the air duct is collected by the first temperature sensor 110.

Step 407, determine whether the temperature of the air inlet is less than or equal to the first temperature threshold.

The content of this step is the same as that of step 204 in the embodiment of fig. 2, and for a detailed description, refer to step 204, which is not described herein again.

And step 408, determining that the temperature of the air inlet is greater than a first temperature threshold value, and detecting whether the temperature of the air inlet rises to an equilibrium temperature value.

The temperature of the air inlet is continuously increased due to the continuous increase of the heat in the inner barrel, and the acquired air inlet temperature is compared with the balance temperature value.

Optionally, the equilibrium temperature value is 63 ℃.

Step 409, determining that the temperature of the air inlet rises to an equilibrium temperature value, and acquiring the continuous maintenance time for reaching the equilibrium temperature value.

And when the temperature of the air inlet rises to the equilibrium temperature value, acquiring the duration of the continuous maintenance of the temperature of the air inlet above the equilibrium temperature value.

If the continuous maintaining time period is greater than or equal to the third time period threshold, it is determined that the laundry treating apparatus reaches the temperature equilibrium state, step 410.

When the time length that the temperature of the air inlet continuously exceeds the balance temperature value is greater than or equal to a third time length threshold value, the heat of the inner barrel reaches a balance state, and the clothes treatment device is determined to reach the temperature balance state at the moment.

Optionally, the third duration threshold is 8 minutes.

It should be added that, in this embodiment, it is described as an example that whether the temperature of the laundry processing device reaches the temperature balance state is determined by the temperature of the air inlet, and as a possible implementation manner, it may also be determined by the temperature of the air outlet, and the specific method is similar, and is not described here again.

In step 411, the difference between the current temperature and the equilibrium temperature value is obtained.

After the clothes processing device reaches the temperature balance state, calculating the difference value between the collected air inlet temperature and the balance temperature value. And determining the temperature difference value of the current air inlet temperature higher than the balance temperature value.

And step 412, determining that the difference is greater than the temperature difference threshold, and controlling to close the heating device to enter a cooling process.

When the temperature difference value that the temperature of the current air inlet is higher than the balance temperature value is larger than the temperature difference threshold value, the heat of the current inner barrel is over high, in order to prevent damage to clothes and save electric energy, the heating device is controlled to be closed, and the heat in the inner barrel is reduced by entering a cooling process.

In the control method of the clothes processing device in the embodiment of the invention, in the process of executing the drying process, if the heating device and the temperature sensor both work normally, the whole drying process can be realized through the steps, and the excessive consumption of electric energy can be prevented by controlling the on and off of the heating device, and the damage to other parts of the clothes processing device caused by the continuous overlong abnormal clothes drying process can also be prevented.

The first point to be added is that step 408 may further include the following steps in the embodiment shown in fig. 4.

The first step is as follows: and determining that the temperature of the air inlet is greater than a first temperature threshold value, and acquiring a drying curve of a drying process and the accumulated starting time of the heating device.

And when the temperature of the air inlet is greater than the first temperature threshold value, acquiring a drying curve of the whole drying process and the accumulated time for opening the heating device in the drying process.

And secondly, judging whether the drying curve accords with a preset curve and/or whether the accumulated opening time reaches a second time threshold.

And comparing the acquired drying curve with a preset curve to determine whether the drying curve is the same as the preset curve.

Or comparing the accumulated opening time length with the second time length threshold value to determine whether the accumulated opening time length reaches the second time length threshold value.

And thirdly, determining that the drying curve accords with a preset curve, and/or controlling to close the heating device to enter a cooling process when the accumulated opening time reaches a second time threshold.

And when the drying curve is matched with the preset curve, which indicates that the drying process is finished, closing the heating device and entering a cooling process.

Or when the accumulated opening time of the heating device reaches the second time threshold, the opening time of the heating device is described to reach the maximum time, and in order to ensure the normal use and the service life of the heating device, the heating device is closed and the cooling process is started.

In summary, the completion degree of the drying process and the usage condition of the heating device are determined by the drying curve and/or the accumulated starting time of the heating device, so that the excessive consumption of electric energy can be prevented, and the damage to other parts of the clothes processing device caused by the abnormal clothes drying process which is continuously too long can also be prevented.

The second point that needs supplementary explanation is that after step 406, it may further include: and determining that the temperature of the air inlet rises to be greater than a fourth temperature threshold value, and controlling the control valve to open and close according to the third duty ratio signal.

Wherein the first temperature threshold is less than the fourth temperature threshold. Optionally, the fourth temperature threshold is 45 ℃.

And after the drying instruction is responded, comparing the collected air inlet temperature with a fourth temperature threshold, and controlling the control valve of the condensation pipeline to be opened and closed alternately according to a third duty ratio signal when the air inlet temperature rises to the fourth temperature threshold. The third duty cycle signal refers to a ratio between an open time period and a stop time period of the control valve in one cycle. Optionally, the third duty cycle signal is 2, and the control valve is opened for 2 minutes and stopped for 1 minute in one period.

If the temperature of the air inlet is detected to be higher than the fourth temperature threshold value, the temperature in the current air channel is over high, the hot air led into the inner barrel risks damaging the clothes, and at the moment, the control valve is controlled according to the third duty ratio signal, so that the condensation pipeline is intermittently conducted, and the over-high temperature is prevented.

Optionally, in this embodiment, the opening of the control valve is determined by taking the relationship between the temperature of the air inlet and the fourth temperature threshold as an example, and the opening of the control valve may also be determined by the relationship between the temperature of the air outlet and the temperature threshold, which is the same as that described above, and is not described here again.

Based on the embodiment shown in fig. 4, fig. 5 is a schematic flow chart of a cooling process according to an embodiment of the present invention. The cooling process may include the steps of:

and 502, controlling to open the control valve and the drying fan, and conveying condensed gas into an inner cylinder of the clothes treatment device through a condensing pipeline and an air duct in sequence so as to cool the inner cylinder.

When the clothes treatment device enters a cooling process, starting the control valve to open the condensing pipeline so as to generate condensed gas through the condensing pipeline; meanwhile, the drying fan is turned on, so that the drying fan transmits the condensed gas in the condensing pipeline to the inner cylinder through the air duct 104, and cooling of the heat of the inner cylinder is accelerated.

And step 504, determining that the opening duration of the control valve is greater than or equal to a fourth duration threshold, and controlling to close the drying fan and the control valve.

And in the cooling process, the control valve is in a normally open state, the duration of the cooling process is determined by detecting the duration of the opening of the control valve, and when the duration of the opening of the control valve reaches the preset duration of the cooling process, the cooling process is finished, and the drying fan and the control valve are closed.

The control valve is opened through control, so that the condensation pipeline is continuously in a conducting state, the inner barrel is cooled, and after the continuous duration of the cooling process is detected to be greater than or equal to a fourth time threshold, the whole drying process is finished.

Wherein the fourth time threshold may be 15 minutes.

As a specific embodiment, fig. 6 is a schematic flowchart of a control method of a clothes processing apparatus according to an embodiment of the present invention, including:

step 602, responding to a drying instruction, detecting whether a temperature sensor works normally, if yes, entering step 606, and if no, entering step 604;

step 604, stopping drying and alarming;

the temperature value collected by the first temperature sensor 110 and/or the second temperature sensor 112 can be detected once in 10ms, and if the AD value of the sensor is not in the normal range, which indicates that the temperature sensor is abnormal, the drying process also needs to be stopped and an alarm is given.

Step 606, controlling to start the heating device 108, the driving motor, the drying fan 106 and the drainage pump, and entering step 608 after the duration lasts for 3 min;

wherein, start the drain pump with the rhythm of opening 10 seconds, stopping 20 seconds.

In the drying process, if the temperature of the air inlet collected by the first temperature sensor 110 exceeds 45 ℃, a control valve of a condensation pipeline is opened (the circulation operation is stopped for 1 minute after the control valve is opened for 2 minutes).

And the driving motor drives the inner barrel to rotate at the speed of 46 revolutions per minute for 20 seconds, and then the circulation operation is stopped for 5 seconds.

Before entering the clothes drying process and entering the cooling process, the temperature collected by the first temperature sensor 110 is continuously detected, when the temperature exceeds 100 ℃, the heating device 108 is closed, and when the temperature is lower than 95 ℃, the heating device 108 is re-opened, and the time lasts for 3min.

Step 608, detecting whether the temperature of the air inlet is less than 35 ℃, if yes, entering step 610, and if no, entering step 612;

and step 610, starting the heating device for more than or equal to 40min, and alarming the abnormality of the heating device when the temperature increment is detected to be less than or equal to 2 ℃.

If the temperature of the air inlet is lower than 35 ℃ and the temperature rise does not exceed 2 degrees (3 AD values), alarming is carried out for 40 minutes, and the step 612 is carried out when the temperature exceeds 35 ℃.

Step 612, continuing the drying process, and if the difference value between the temperature of the air inlet and the balance temperature value is detected to be greater than the temperature difference threshold value or the starting time of the heating device reaches the starting time threshold value, entering step 614;

if the temperature of the air inlet is not changed for 8 minutes continuously and is higher than 63 ℃, a temperature balance point is reached, the upper and lower deviation values of the temperature (the current temperature value is subtracted from the temperature value of the balance point) are judged after the temperature of the air inlet reaches the balance point, and if the temperature exceeds the range, the heating pipe is closed and the cooling process is started.

And meanwhile, judging the accumulated time for opening the heating pipe, and closing the heating pipe if the accumulated time exceeds a set numerical value, and entering a cooling process.

And 614, entering a cooling process until the whole drying process is completed.

In the cooling process, the control valve of the condensation pipeline is opened all the time for 15 minutes (the intermittent switch is changed into the normally open state), the heating device is controlled to be closed, and the drying fan is controlled to continue blowing.

And when the drying process is finished, the drying fan is controlled to be closed, and the control valves of the drainage pump and the condensation pipeline are closed.

As shown in fig. 7, the control device 70 according to the embodiment of the present invention includes: an acquisition module 702, a judgment module 704 and a generation module 706.

And the acquisition module 702 is used for executing a drying process and acquiring the temperature in the air duct of the clothes treatment device.

A determining module 704, configured to determine whether the temperature is less than or equal to a first temperature threshold; and determining that the temperature is less than or equal to a first temperature threshold value, and judging whether the temperature increment of the temperature within the first time length threshold value is less than or equal to an increment threshold value.

And the generating module 706 is used for determining that the temperature increment is smaller than or equal to the increment threshold value and generating alarm information of abnormal heating devices.

The main executing body of the collecting module 702 may be a temperature sensor, the temperature sensor may be disposed at least one position in the air duct, such as the first temperature sensor 110 and/or the second temperature sensor 112 in fig. 1, the determining module 704 and the generating module 706 may be integrated on a processing chip of the laundry processing device, and the main executing body of the alarm information may be a display screen or a speaker on the laundry processing device.

As a possible implementation manner, the acquisition module 702 is further configured to: and responding to the drying instruction, and controlling the temperature sensor to sample the temperature according to a preset acquisition frequency.

The determining module 704 is further configured to: and judging whether the temperature sampling belongs to a normal temperature range.

The generation module 706 is further configured to: and if the temperature sampling is determined not to belong to the normal temperature range, generating alarm information of the abnormal temperature sensor and stopping the drying process.

As a possible implementation manner, the acquisition module 702 is further configured to: the temperature of an air outlet of an air duct of the clothes treatment device is collected.

The determining module 704 is further configured to: and judging whether the temperature of the air outlet is greater than a second temperature threshold value.

The acquisition module 702 is further configured to: and determining that the temperature is greater than the second temperature threshold value, closing the heating device, and continuously collecting the temperature of the air outlet.

The control module is used for: and determining that the temperature of the tuyere is lower than a third temperature threshold value, and restarting the heating device.

The control module is integrated on a processing chip of the laundry processing device.

As a possible implementation manner, the obtaining module is configured to: determining that the temperature is greater than a first temperature threshold value, and acquiring a drying curve of a drying process and the accumulated starting time of a heating device;

the determining module 704 is further configured to: judging whether the drying curve accords with a preset curve and/or whether the accumulated starting time reaches a second time threshold;

the control module is further configured to: and determining that the drying curve accords with a preset curve, and/or controlling to close the heating device to enter a cooling process when the accumulated opening time reaches a second time threshold.

As a possible implementation, the control module is further configured to: whether the clothes processing device reaches a temperature balance state is detected.

The acquisition module and the control module are integrated on a processing chip of the clothes processing device.

The acquisition module is further configured to: and determining that a temperature balance state is reached, and acquiring a difference value between the current temperature and a balance temperature value, wherein the balance temperature value is a temperature value corresponding to the temperature balance state.

The control module is further configured to: and determining that the difference value is larger than the temperature difference threshold value, and controlling to close the heating device to enter a cooling process.

As a possible implementation, the control module is further configured to: and determining that the temperature is greater than a first temperature threshold value, and detecting whether the temperature rises to an equilibrium temperature value.

The acquisition module is further configured to: and determining that the temperature rises to an equilibrium temperature value, and acquiring the continuous maintaining time for reaching the equilibrium temperature value.

The control module is further configured to: and determining that the continuous maintaining time period is greater than or equal to the third time period threshold value, determining that the clothes treatment device reaches a temperature balance state.

As a possible implementation manner, a drying fan and a condensing pipeline are arranged in the air duct of the clothes processing device, a control valve is arranged on the condensing pipeline, the cooling process is performed, and the control module is further used for: and controlling to open the control valve and the drying fan, and conveying condensed gas into the inner cylinder of the clothes treatment device through the condensing pipeline and the air duct in sequence so as to cool the inner cylinder.

The control module is further configured to: and determining that the duration of the opening of the control valve is greater than or equal to a fourth time threshold, and controlling to close the drying fan and the control valve.

As a possible implementation, the control module is further configured to: and responding to the drying instruction, and controlling to start the driving motor so as to drive the inner cylinder to rotate according to the first duty ratio signal.

The control module is further configured to: and controlling the drainage pump to start and stop according to the second duty ratio signal.

As a possible implementation, the control module is further configured to: and in the clothes drying process, if the temperature is determined to rise to be greater than the fourth temperature threshold, controlling the control valve to open and close according to the third duty ratio signal.

In addition, it can be understood by those skilled in the art that each module in the control device shown in fig. 7 executes the steps of the control method of the laundry treatment device, and thus the steps are the same as those described in the above method embodiment, and have the same technical effects as those in the above method embodiment, and are not repeated herein.

As shown in fig. 8, the laundry treating apparatus 80 according to the embodiment of the present invention includes:

a processor 804; a memory 802 for storing processor-executable instructions, wherein the processor 804 is configured to implement the steps of the control method in any of the above-described method embodiments when executing the executable instructions stored in the memory 802.

A computer-readable storage medium according to an embodiment of the invention, on which a computer program is stored which, when executed by the processing, implements the steps of the control method in any of the method embodiments described above.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (system) or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, etc. do not denote any order. These words may be interpreted as names.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A control method of a laundry treating apparatus, characterized in that the method comprises:

executing a drying process, and collecting the temperature in the air duct of the clothes treatment device;

judging whether the temperature is less than or equal to a first temperature threshold value;

determining that the temperature is less than or equal to the first temperature threshold, and judging whether the temperature increment of the temperature within a first time length threshold is less than or equal to an increment threshold;

determining that the temperature increment is smaller than or equal to the increment threshold value, and generating alarm information of heating device abnormity;

wherein, the first temperature threshold is used for the temperature threshold before the drying process starts or at the initial stage;

before the temperature in the air duct of the clothes treatment device is collected, the method further comprises the following steps:

responding to a drying instruction, and controlling a temperature sensor to sample temperature according to a preset acquisition frequency;

judging whether the temperature sampling belongs to a normal temperature range;

and if the temperature sampling is determined not to belong to the normal temperature range, generating alarm information of the abnormal temperature sensor and stopping the drying process.

2. The control method according to claim 1, wherein the temperature is an air inlet temperature of the air duct of the clothes treatment device, and before the collecting the temperature in the air duct of the clothes treatment device, the method further comprises:

collecting the temperature of an air outlet of an air duct of the clothes treatment device;

judging whether the temperature of the air outlet is greater than a second temperature threshold value or not;

determining that the temperature is greater than the second temperature threshold, closing the heating device, and continuously collecting the temperature of the air outlet;

determining that the temperature of the air outlet is lower than a third temperature threshold value, and restarting the heating device;

3. The control method according to claim 1, characterized in that the method further comprises:

determining that the temperature is greater than the first temperature threshold, and acquiring a drying curve of the drying process and the accumulated starting time of the heating device;

judging whether the drying curve accords with a preset curve and/or whether the accumulated starting time reaches a second time threshold;

and determining that the drying curve accords with a preset curve, and/or controlling to close the heating device to enter a cooling process when the accumulated opening time reaches a second time threshold.

4. The control method according to claim 1, characterized in that the method further comprises:

detecting whether the laundry treating apparatus reaches a temperature equilibrium state;

determining that the temperature balance state is reached, and acquiring a difference value between the current temperature and a balance temperature value, wherein the balance temperature value is a temperature value corresponding to the temperature balance state;

and determining that the difference is larger than a temperature difference threshold value, and controlling to close the heating device to enter a cooling process.

5. The control method according to claim 4, wherein the detecting whether the laundry treatment device reaches a temperature equilibrium state comprises:

determining that the temperature is greater than the first temperature threshold, detecting whether the temperature rises to the equilibrium temperature value;

determining that the temperature rises to the equilibrium temperature value, and acquiring the continuous maintaining time for reaching the equilibrium temperature value;

determining that the continuous maintaining time period is greater than or equal to a third time period threshold, determining that the laundry treating apparatus reaches a temperature equilibrium state.

6. The control method according to any one of claims 3 to 5, wherein a drying fan is disposed in the air duct of the clothes treatment device, and a condensing pipeline is connected to the air duct, a control valve is disposed on the condensing pipeline, and the cooling process includes:

controlling to open the control valve and the drying fan, and conveying condensed gas into an inner cylinder of the clothes treatment device through the condensing pipeline and the air duct in sequence so as to cool the inner cylinder;

and determining that the duration of the opening of the control valve is greater than or equal to a fourth time threshold, and controlling to close the drying fan and the control valve.

7. The control method according to claim 6, wherein the laundry treating apparatus further includes a driving motor and a drain pump, the method further comprising:

responding to a drying instruction, controlling to start the driving motor so as to drive the inner cylinder to rotate according to a first duty ratio signal;

and controlling the drainage pump to start and stop according to the second duty ratio signal.

8. The control method according to claim 6, characterized in that the method further comprises:

in the clothes drying process, if the temperature is determined to rise to be greater than a fourth temperature threshold value, the opening and closing of the control valve are controlled according to a third duty ratio signal,

9. A control device of a laundry treating apparatus, characterized in that the apparatus comprises:

the acquisition module is used for executing a drying process and acquiring the temperature in the air duct of the clothes treatment device;

the judging module is used for judging whether the temperature is less than or equal to a first temperature threshold value; determining that the temperature is less than or equal to the first temperature threshold, and judging whether the temperature increment of the temperature within a first time length threshold is less than or equal to an increment threshold;

and the generating module is used for determining that the temperature increment is smaller than or equal to the increment threshold value and generating alarm information of abnormity of the heating device.

10. A laundry treating apparatus, comprising:

a processor;

memory for storing executable instructions of the processor, wherein the processor is configured to implement the steps of the method according to any one of claims 1 to 8 when executing the executable instructions stored in the memory.

11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.