Control method, laundry treating apparatus, and computer-readable storage medium

文档序号：1811626 发布日期：2021-11-09 浏览：12次中文

阅读说明：本技术 控制方法、衣物处理设备及计算机可读存储介质 (Control method, laundry treating apparatus, and computer-readable storage medium ) 是由杨啸薛洋任冲唐立志姜晓宇朱晓松于 2021-07-27 设计创作，主要内容包括：本申请提供一种控制方法、衣物处理设备及计算机可读存储介质,所述方法包括：确定进入静音烘干过程,控制压缩机以启动频率运转；确定压缩机以启动频率运转的时长达到第一时长,控制压缩机以小于启动频率的目标频率运转；确定压缩机达到预设回油条件,控制压缩机以预设回油频率运转第二时长,以使润滑油回到压缩机中；确定衣物处理设备桶体内待处理衣物的湿度小于烘干湿度阈值,控制衣物处理设备关闭,以结束静音烘干过程。如此,通过控制压缩机以小于启动频率的低频运行,减小压缩机运行噪音,从而降低衣物处理设备运行烘干程序的噪音,实现静音烘干的功能。(The present application provides a control method, a laundry treating apparatus, and a computer-readable storage medium, the method including: determining to enter a mute drying process, and controlling a compressor to operate at a starting frequency; determining that a time period for which the compressor is operated at the starting frequency reaches a first time period, and controlling the compressor to operate at a target frequency less than the starting frequency; determining that the compressor reaches a preset oil return condition, and controlling the compressor to run for a second time at a preset oil return frequency so as to return the lubricating oil to the compressor; and determining that the humidity of the clothes to be processed in the barrel of the clothes processing equipment is smaller than a drying humidity threshold value, and controlling the clothes processing equipment to be closed so as to finish the mute drying process. Therefore, the running noise of the compressor is reduced by controlling the compressor to run at a low frequency which is less than the starting frequency, so that the noise of the running drying program of the clothes treatment equipment is reduced, and the function of mute drying is realized.)

1. A control method applied to a clothes treatment apparatus, the method comprising:

determining to enter a mute drying process, and controlling a compressor to operate at a starting frequency;

determining that a time period for which the compressor is operated at the starting frequency reaches a first time period, and controlling the compressor to operate at a target frequency, wherein the target frequency is less than the starting frequency;

determining that the compressor reaches a preset oil return condition, and controlling the compressor to run for a second time at a preset oil return frequency so as to return the lubricating oil to the compressor;

and determining that the humidity of the clothes to be processed in the barrel of the clothes processing equipment is smaller than a drying humidity threshold value, and controlling the clothes processing equipment to be closed so as to finish the mute drying process.

2. The method of claim 1, wherein after the determining that the length of time the compressor is operating at the start-up frequency has reached the first length of time, the method further comprises:

controlling a fan of the clothes treatment equipment to rotate at a first fan rotating speed, wherein the first fan rotating speed is less than a preset fan rotating speed threshold;

controlling a barrel body of the clothes treatment equipment to rotate at a first barrel body rotating speed, wherein the first barrel body rotating speed is smaller than a barrel body preset rotating speed threshold value.

3. The method of claim 1, further comprising:

and determining that the target frequency is less than or equal to a torque critical frequency, and performing torque compensation on the compressor to reduce the vibration of the compressor.

4. The method of claim 2, wherein after the determining that the length of time the compressor is operating at the start-up frequency has reached the first length of time, the method further comprises:

acquiring an ambient temperature outside the laundry treatment apparatus;

and determining that the ambient temperature is within a preset working temperature range of the clothes treatment equipment, and determining the target frequency, the first fan rotating speed and the first barrel rotating speed according to the ambient temperature.

5. The method of claim 1, further comprising:

acquiring a preset time range for entering the silent drying process in response to a trigger operation for starting the clothes treatment device to execute a silent drying program;

acquiring the current moment;

and determining that the current moment is within the preset time range, and controlling the clothes treatment equipment to enter a mute drying process.

6. The method of claim 2, wherein controlling the compressor to operate at a start-up frequency comprises:

controlling the fan to rotate at a second fan rotating speed, wherein the second fan rotating speed is greater than the first fan rotating speed and less than a preset fan rotating speed threshold;

controlling the barrel body to rotate at a second barrel body rotating speed, wherein the second barrel body rotating speed is greater than the first barrel body rotating speed and is less than a barrel body preset rotating speed threshold value;

and determining that the time length of the fan rotating at the second fan rotating speed reaches a third time length, and controlling the compressor to operate at the starting frequency.

7. The method of claim 3, further comprising:

determining that the target frequency is less than or equal to a preset frequency threshold, and acquiring the duration of the target frequency which is less than the preset frequency threshold;

and determining that the duration reaches a fourth duration, and determining that the compressor reaches a preset oil return condition.

8. The method of claim 7, further comprising:

determining that the target frequency is greater than a torque critical frequency, or determining that the target frequency is greater than a preset frequency threshold, or determining that the duration time does not reach a fourth time, and detecting the humidity of the clothes to be treated by using a humidity detection device of the clothes treatment equipment;

and determining that the humidity of the clothes to be processed in the barrel of the clothes processing equipment is greater than or equal to a drying humidity threshold value, and controlling the compressor to operate at the target frequency.

9. The method according to any one of claims 2 to 8, wherein the controlling the laundry treating apparatus to be turned off comprises:

controlling the compressor to operate at a target frequency for a fifth time period so as to perform time-supplementing drying on the clothes to be treated;

controlling the compressor to stop running;

controlling the fan to rotate at a first fan rotating speed, and controlling the barrel to rotate at a first barrel rotating speed so as to reduce the temperature of the clothes to be treated;

and determining that the temperature of the clothes to be processed is less than a preset temperature threshold value, and controlling the fan and the barrel body to stop rotating.

10. A laundry treating apparatus, comprising:

a memory for storing executable instructions;

a processor for implementing the steps of the control method of any one of claims 1 to 9 when executing executable instructions stored in the memory.

11. A computer-readable storage medium having computer-executable instructions stored thereon, the computer-executable instructions configured to perform the steps of the control method of any of claims 1 to 9.

Technical Field

The present application relates to the field of automation control technology, and relates to, but is not limited to, a control method, a laundry treatment apparatus, and a computer-readable storage medium.

Background

Along with the improvement of the requirements of people on living quality, the acceptance of people on clothes treatment equipment, such as a washing and drying integrated machine, a clothes dryer, a dish washing machine and the like, is higher and higher, and various customized requirements appear along with the acceptance, for example, the requirement of people on night drying is particularly important. The night drying requires a dryer having at least the following features:

1) the clothes dryer operates at night, the sleep time of a user is fully utilized, working time and daily working and rest time in the day are not occupied, valley electricity price can be used in a city with peak-valley electricity price in the night time period, and drying cost can be reduced;

2) when the drying program runs, the drying program must be quite silent, and the rest of the user cannot be influenced;

3) the drying effect is good, and after getting up the bed the next day, the user can take out the clothes and wear or store the clothes immediately without secondary airing by the user.

Most heat pump clothes dryers in the market at present can not satisfy all the requirements, and some models have increased the function of reservation start-up, and although can dry night after the user sleeps, but only can operate with normal stoving mode, have the shortcoming: 1) the clothes dryer has high noise when running at night, so that the rest of a user is influenced, and the user experience is not good; 2) the power consumption is large.

Disclosure of Invention

In view of the above, embodiments of the present application provide a control method, a laundry processing apparatus, and a computer-readable storage medium.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a control method, which is applied to clothes treatment equipment and comprises the following steps:

determining to enter a mute drying process, and controlling a compressor to operate at a starting frequency;

According to the control method provided by the embodiment of the application, the compressor is controlled to operate at a low frequency which is less than the starting frequency, so that the operation noise of the compressor is reduced, the noise of the clothes treatment equipment for operating the drying program is reduced, and the function of mute drying is realized. Therefore, the user rest is not influenced when the clothes processing equipment is used for drying clothes at night, and the satisfaction degree of the user is improved.

In some embodiments, after the determining that the period of time that the compressor is operating at the start-up frequency reaches the first period of time, the method further comprises:

controlling a fan of the clothes treatment equipment to rotate at a first fan rotating speed, wherein the first fan rotating speed is less than a preset fan rotating speed threshold;

In some embodiments, the method further comprises:

and determining that the target frequency is less than or equal to a torque critical frequency, and performing torque compensation on the compressor to reduce the vibration of the compressor.

In some embodiments, after the determining that the period of time that the compressor is operating at the start-up frequency reaches the first period of time, the method further comprises:

acquiring an ambient temperature outside the laundry treatment apparatus;

In some embodiments, the method further comprises:

acquiring a preset time range for entering the silent drying process in response to a trigger operation for starting the clothes treatment device to execute a silent drying program;

acquiring the current moment;

and determining that the current moment is within the preset time range, and controlling the clothes treatment equipment to enter a mute drying process.

In some embodiments, the controlling the compressor to operate at a start-up frequency comprises:

controlling the fan to rotate at a second fan rotating speed, wherein the second fan rotating speed is greater than the first fan rotating speed and less than a preset fan rotating speed threshold;

and determining that the time length of the fan rotating at the second fan rotating speed reaches a third time length, and controlling the compressor to operate at the starting frequency.

In some embodiments, the method further comprises:

determining that the target frequency is less than or equal to a preset frequency threshold, and acquiring the duration of the target frequency which is less than the preset frequency threshold;

and determining that the duration reaches a fourth duration, and determining that the compressor reaches a preset oil return condition.

In some embodiments, the method further comprises:

In some embodiments, the controlling the laundry treating apparatus to be turned off includes:

controlling the compressor to operate at a target frequency for a fifth time period so as to perform time-supplementing drying on the clothes to be treated;

controlling the compressor to stop running;

controlling the fan to rotate at a first fan rotating speed, and controlling the barrel to rotate at a first barrel rotating speed so as to reduce the temperature of the clothes to be treated;

and determining that the temperature of the clothes to be processed is less than a preset temperature threshold value, and controlling the fan and the barrel body to stop rotating.

An embodiment of the present application provides a laundry treatment apparatus, including:

a memory for storing executable instructions;

and the processor is used for realizing the steps of the control method when executing the executable instructions stored in the memory.

The embodiment of the application provides a computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium and configured to execute the steps of the control method.

Drawings

Fig. 1 is a schematic flow chart of an implementation of a control method provided in an embodiment of the present application;

fig. 2 is a schematic flowchart of another implementation of the control method according to the embodiment of the present application;

fig. 3 is a schematic flowchart of another implementation of the control method according to the embodiment of the present application;

fig. 4 is a schematic flowchart of another implementation of the control method according to the embodiment of the present application;

fig. 5 is a schematic flow chart of an implementation of controlling a laundry processing apparatus to enter a silent drying process according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating an operation process of a heat pump clothes dryer according to an embodiment of the present disclosure;

fig. 7 is a schematic flowchart of another implementation of the control method according to the embodiment of the present application;

FIG. 8 is a schematic diagram illustrating the operation frequency of the compressor when the mute bake process is performed in the embodiment of the present application;

fig. 9 is a schematic structural diagram of a clothes treatment apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the attached drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

In the following description, references to the terms "first \ second \ third" are only to distinguish similar objects and do not denote a particular order, but rather the terms "first \ second \ third" are used to interchange specific orders or sequences, where appropriate, so as to enable the embodiments of the application described herein to be practiced in other than the order shown or described herein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.

A control method, a laundry treating apparatus, and a computer-readable storage medium provided according to some embodiments of the present application are described below with reference to fig. 1 to 9.

An embodiment of a first aspect of the present application provides a control method. Fig. 1 is a schematic flow chart of an implementation of a control method according to an embodiment of the present application, as shown in fig. 1, the method includes steps S101 to S104 shown in fig. 1, and the steps are described below with reference to fig. 1.

And step S101, determining to enter a mute drying process, and controlling the compressor to operate at a starting frequency.

The control method of the embodiment of the application is applied to the clothes treatment equipment, and the clothes treatment equipment can be household appliances with drying function, such as a washing machine, a washing and drying integrated machine, a clothes dryer and the like. The clothes treating apparatus in the embodiment of the present application refers to an apparatus for performing a drying function by using a heat pump system, and the heat pump clothes dryer is a clothes dryer that uses the heat pump system to extract heat from the surrounding environment and transfer it to clothes to be treated (i.e. clothes to be dried). The following clothes treating apparatus is described by taking a heat pump dryer as an example, and the clothes treating apparatus or the dryer in the following is specifically referred to as the heat pump dryer unless otherwise specified.

After the clothes dryer enters a silent drying process, a compressor of the clothes dryer is controlled to run at a starting frequency. In the embodiment of the application, the starting frequency is the same as the starting frequency of the non-mute drying function except the mute drying function, and if the starting frequency can be any value above 40Hz (hertz).

After the heat pump system is started, the compressor runs at the starting frequency, the high-low pressure difference is quickly established in the heat pump system, and lubricating oil can quickly return to the compressor to maintain the dynamic balance of the whole heat pump system so as to enable the heat pump system to run stably. Otherwise, the compressor may be damaged due to oil shortage, resulting in mechanical failure of the dryer.

And step S102, determining that the time length of the compressor running at the starting frequency reaches a first time length, and controlling the compressor to run at the target frequency.

And after controlling the compressor to operate at the starting frequency, starting timing, and when determining that the time length of the compressor operating at the starting frequency reaches a first time length, considering that the oil return of lubricating oil in the compressor is finished and the high-low pressure difference capable of performing the drying process is reached, acquiring the target frequency at the moment, and controlling the compressor to operate at the target frequency.

In the embodiment of the application, the target frequency is less than the starting frequency, so that the compressor runs the drying program at a low frequency less than the normal working frequency, the running noise of the compressor is reduced, the noise of the clothes treatment equipment running the drying program is reduced, and the mute drying function is realized. Therefore, the user rest is not influenced when the clothes processing equipment is used for drying clothes at night, and the satisfaction degree of the user is improved.

In this embodiment, the first time period may be any value between 40s (seconds) and 2min (minutes), for example, 60 s. The target frequency may be a preset fixed frequency, or may be set to a non-fixed frequency according to the ambient temperature.

And step S103, determining that the compressor reaches a preset oil return condition, and controlling the compressor to run for a second time at a preset oil return frequency so as to return the lubricating oil to the compressor.

When the compressor is operated at a low frequency for a long time, the refrigerant has insufficient flow rate to carry the lubricant oil flowing from the compressor back to the compressor. Based on this, in the control method provided by the embodiment of the application, a special low-frequency oil return function is set, and when it is determined that the compressor reaches a preset oil return condition, the compressor is controlled to operate at an oil return frequency for a second time period, so that the refrigerant has a sufficient flow rate to bring the lubricating oil back to the compressor, and the compressor can operate at a low frequency on the premise of not damaging the compressor.

In the embodiment of the present application, the oil return frequency is generally an intermediate frequency, and in order to quickly return the lubricating oil to the compressor, the oil return frequency may be set to a value greater than or equal to the starting frequency, but in order to reduce noise, the oil return frequency may not be set to a high frequency, and therefore, the oil return frequency may be set to any value between 40Hz and 70Hz, such as 52 Hz. The second duration may be any value not less than 30s, such as 90 s.

And step S104, determining that the humidity of the clothes to be processed in the barrel of the clothes processing equipment is smaller than a drying humidity threshold value, and controlling the clothes processing equipment to be closed so as to finish the mute drying process.

After the compressor runs for a second time at the oil return frequency, the oil return frequency is quitted, meanwhile, the humidity of the clothes to be dried is detected by using a humidity detection device in the barrel, when the humidity of the clothes to be dried is determined to be smaller than a drying humidity threshold value, the clothes to be dried is considered to be dried, at the moment, the clothes treatment equipment is controlled to be closed, and the mute drying process is ended; when the humidity of the clothes to be dried is determined to be greater than or equal to the drying humidity threshold value, the clothes to be dried are not dried, and the compressor is continuously controlled to operate at the target frequency.

Generally, the water content of the clothes made of different materials is different after drying, and therefore, in the embodiment of the present application, the drying humidity threshold may be set to any value between 1500 and 1800, or set to a value corresponding to the material of the clothes to be dried.

The control method provided by the embodiment of the application reduces the running noise of the compressor by controlling the compressor to run at a low frequency which is lower than the normal working frequency, thereby reducing the noise of the clothes treatment equipment running drying program and realizing the function of mute drying. Therefore, the user rest is not influenced when the clothes processing equipment is used for drying clothes at night, and the satisfaction degree of the user is improved.

In some embodiments, the fan and the tub of the dryer may rotate at a lower speed than the respective normal operation speeds during the drying process. Fig. 2 is a schematic flow chart of another implementation of the control method provided in the embodiment of the present application, and as shown in fig. 2, the control method includes the following steps:

step S201, determining to enter a mute drying process, and controlling the compressor to operate at a starting frequency.

In the embodiment of the present application, step S201, step S205, and step S206 correspond to step S101, step S103, and step S104 in the embodiment shown in fig. 1 one to one, and the implementation manner and implementation effect of step S201, step S205, and step S206 may refer to the detailed description of the corresponding step in the embodiment shown in fig. 1.

Step S202, determining that the time length of the compressor running at the starting frequency reaches a first time length, and controlling the compressor to run at the target frequency.

In one implementation, the obtaining of the target frequency may be implemented by obtaining a preset low-frequency threshold from the storage space, and determining the preset low-frequency threshold as the target frequency, where the target frequency is a fixed value.

In another implementation, obtaining the target frequency may be implemented as: acquiring the ambient temperature outside a barrel body of the clothes treatment equipment; judging whether the ambient temperature is within a preset working temperature range of the clothes treatment equipment or not; and determining a target frequency according to the ambient temperature under the condition that the ambient temperature is determined to be within the preset working temperature range of the clothes treatment equipment, wherein the target frequency is not a fixed value at the moment. And controlling the clothes treatment equipment to stop working under the condition that the environment temperature is determined not to be within the preset working temperature range of the clothes treatment equipment.

The clothes cannot be dried for a long time due to the fact that the ambient temperature is too low, and the clothes dryer which is too high in ambient temperature works at a high temperature for a long time and can cause irreversible damage to mechanical devices in the clothes dryer, so that high-temperature protection is needed. Based on the temperature, the clothes dryer sets a working temperature range when leaving a factory, and the clothes dryer can work normally within the preset working temperature range.

Step S203, controlling a fan of the clothes processing equipment to rotate at a first fan rotating speed.

In this application embodiment, the first fan rotational speed is less than the preset rotational speed threshold of the fan. The first fan rotating speed can be a fixed value obtained from a storage space, and can also be a dynamic value determined according to the ambient temperature. Here, the preset rotation speed threshold of the fan may be a normal rotation speed of the fan under the non-silent drying function.

Step S204, controlling the barrel of the clothes processing equipment to rotate at a first barrel rotating speed.

In this application embodiment, first barrel rotational speed is less than the predetermined rotational speed threshold value of staving. The first barrel rotating speed can be a fixed value obtained from a storage space, and can also be a dynamic value determined according to the ambient temperature. Here, the preset rotation speed threshold of the barrel body may be a normal rotation speed of the barrel body under the non-silent drying function.

It should be noted that step S203 and step S204 are not in sequence, step S203 and step S204 may be executed simultaneously, and step S203 and step S204 may be executed before controlling the compressor to operate at the target frequency.

In one implementation, determining the target frequency, the first fan speed, and the first tub speed according to the ambient temperature may be implemented as: judging whether the ambient temperature reaches a first temperature threshold value; under the condition that the environment temperature reaches a first temperature threshold value, determining a first frequency value as a target frequency, determining a first fan rotating speed value as a first fan rotating speed, and determining a first barrel rotating speed value as a first barrel rotating speed; and under the condition that the ambient temperature does not reach the first temperature threshold value, determining the second frequency value as a target frequency, determining the second fan rotating speed value as a first fan rotating speed, and determining the second barrel rotating speed value as a first barrel rotating speed.

The first temperature threshold value may take any value within a preset operating temperature range.

In another implementation, determining the target frequency, the first fan rotational speed, and the first tub rotational speed according to the ambient temperature may be implemented as: and acquiring a preset relation table from the storage space, wherein the preset relation table stores target frequencies, first fan rotating speeds and first barrel rotating speeds corresponding to all environment temperatures within a preset working temperature range, and inquiring the preset relation table according to the environment temperatures to obtain the target frequencies, the first fan rotating speeds and the first barrel rotating speeds corresponding to the environment temperatures.

And S205, determining that the compressor reaches a preset oil return condition, and controlling the compressor to run for a second time at a preset oil return frequency so as to return the lubricating oil to the compressor.

Step S206, determining that the humidity of the clothes to be processed in the barrel of the clothes processing equipment is smaller than the drying humidity threshold value, and controlling the clothes processing equipment to be closed so as to finish the mute drying process.

According to the method provided by the embodiment of the application, in the mute drying process, the barrel body and the fan are controlled to rotate while the compressor is controlled to operate at a low frequency, the drying time is shortened, the barrel body and the fan are controlled to rotate at a low speed, mute drying of the clothes treatment equipment can be ensured, and power consumption can be reduced.

When the heat pump clothes dryer uses the fixed-frequency compressor, the operation frequency of the compressor is fixed, and the vibration of the compressor system can be well controlled only by adjusting the pipeline according to the target frequency, so that the vibration of the compressor system meets the safety requirement. When the variable-frequency compressor is used in the heat pump clothes dryer, the operation frequency of the compressor is adjustable, when the compressor operates at low frequency, the rotating speed of the compressor is low, the rotating inertia of a rotor is very small, the unbalance phenomenon can be obvious, the change of the pressure difference of internal gas during air suction and air exhaust can not be balanced quickly, the fluctuation of output torque is increased, the vibration of the compressor is increased, and even resonance can be generated to influence the normal operation of the compressor. Accordingly, when the compressor used is an inverter compressor, it is necessary to suppress vibration of the compressor during low-frequency operation of the compressor.

In some embodiments, compressor vibration may be suppressed by torque compensation. Based on this, on the basis of the embodiment shown in fig. 2, an embodiment of the present application further provides a control method, and fig. 3 is a schematic diagram of a further implementation flow of the control method provided in the embodiment of the present application, as shown in fig. 3, the control method includes the following steps:

step S301, determining to enter a mute drying process, and controlling the compressor to operate at a starting frequency.

Step S302, determining whether the time period of the compressor running at the starting frequency reaches a first time period.

When it is determined that the period of time for which the compressor is operated at the start-up frequency reaches the first period of time, proceeding to step S303; when it is determined that the period of time for which the compressor is operated at the start frequency does not reach the first period of time, it returns to step S301 to continue controlling the compressor to be operated at the start frequency.

Step S303, an ambient temperature outside the laundry treating apparatus is acquired.

Here, the ambient temperature may be acquired using a temperature detection device disposed outside the tub (i.e., a space between inside and outside of the casing of the laundry treating apparatus), which may be a temperature sensor.

Step S304, judging whether the environment temperature is in the preset working temperature range of the clothes treatment equipment.

When the ambient temperature is determined to be within the preset working temperature range of the clothes treatment device, it is indicated that the ambient temperature is suitable for the silent drying program operated by the clothes dryer, that is, the silent drying program is operated at the current ambient temperature, and no mechanical damage is caused to the clothes dryer, and then the operation goes to step S305; when it is determined that the ambient temperature is not within the preset operating temperature range of the laundry treating apparatus, it indicates that the ambient temperature is not suitable for running the mute drying program, and at this time, the laundry treating apparatus is controlled to stop operating, and the process proceeds to step S312.

Here, the preset operating temperature range may be a factory default value of the dryer.

Step S305, determining a target frequency, a first fan rotating speed and a first barrel rotating speed according to the environment temperature.

The target frequency is smaller than the starting frequency, the rotating speed of the first fan is smaller than a preset rotating speed threshold of the fan, and the rotating speed of the first barrel is smaller than a preset rotating speed threshold of the barrel. The target frequency, the first fan rotation speed, and the first tub rotation speed herein are dynamic values determined according to the ambient temperature, and are not fixed values.

And S306, controlling the compressor to operate at the target frequency, controlling the fan of the clothes treatment equipment to rotate at a first fan rotating speed, and controlling the barrel of the clothes treatment equipment to rotate at a first barrel rotating speed.

Variable frequency compressor, compressor frequency is adjustable, and during the low frequency operation, the compressor rotational speed is low, and the inertia of rotor is very little, and the unbalance phenomenon will become extraordinarily obvious, and unable quick balance is breathed in, the inside gas pressure difference of carminative changes, and the undulant grow of output torque leads to compressor vibration grow, can produce resonance even and influence the normal operating of compressor. Therefore, the low frequency vibration of the compressor needs to be considered when the compressor operates at a low frequency. The step S307 and the step S308 may solve the problem of low frequency vibration of the compressor.

In step S307, it is determined whether the target frequency is less than or equal to a preset torque critical frequency.

When it is determined that the target frequency is less than or equal to the torque critical frequency, the vibration generated by the compressor needs to be suppressed, and then the process proceeds to step S308; in the case where it is determined that the target frequency is greater than the torque critical frequency, the compressor vibration does not need to be suppressed, upon which the flow proceeds to step S311.

Here, the critical torque frequency may be any value between 38Hz and 42Hz, such as 40 Hz.

And step S308, performing torque compensation on the compressor to reduce the vibration of the compressor.

In the embodiment of the application, the compensation current can be determined according to the ambient temperature by adjusting the current, and the torque compensation can be performed on the compressor according to the compensation current, so that the vibration generated by the low-frequency operation of the compressor can be reduced. Of course, the torque compensation may be performed on the compressor in other manners, and the embodiment of the present application is not limited.

Step S309, determine whether the compressor reaches a preset oil return condition.

When it is determined that the compressor reaches the preset oil return condition, the operation frequency of the compressor needs to be increased for oil return, and then the step S310 is performed; when it is determined that the compressor does not reach the preset oil return condition, the process proceeds to step S311.

And step S310, controlling the compressor to run for a second time at a preset oil return frequency so as to return the lubricating oil to the compressor.

The compressor runs at low frequency for a long time, the refrigerant has insufficient flow velocity to bring the lubricating oil of the compressor back to the compressor, and therefore the lubricating oil of the compressor runs for a long time and damages the compressor.

Step S311, determining whether the humidity of the laundry to be processed in the drum of the laundry processing apparatus is less than a drying humidity threshold.

When it is determined that the humidity of the laundry to be processed in the tub of the laundry processing apparatus is less than the drying humidity threshold, it is determined that the laundry to be dried in the tub is dried, and then the process proceeds to step S312; when it is determined that the humidity of the laundry to be processed in the tub of the laundry processing apparatus is greater than or equal to the drying humidity threshold, it is determined that the laundry to be dried in the tub is not dried, and then the procedure returns to step S303 to continue the mute drying process.

In step S312, the laundry treating apparatus is controlled to be turned off to end the mute drying process.

According to the method provided by the embodiment of the application, the target frequency, the rotating speed of the first fan and the rotating speed of the first barrel are determined according to the ambient temperature, so that the flexible operation of a mute drying program is realized; when the target frequency is less than or equal to the critical torque frequency, performing torque compensation on the compressor to reduce the vibration of the compressor, thereby reducing the noise of the operation of the compressor; when the preset oil return condition is reached, the compressor is controlled to operate at the preset oil return frequency so that the lubricating oil returns to the compressor, the compressor is prevented from operating in a state of lacking the lubricating oil, and the compressor is enabled to operate normally under the low frequency. By the method, the noise of the clothes processing equipment for operating the drying program can be reduced, and the mute drying function is realized.

On the basis of the above embodiments, the present application further provides a control method applied to a laundry treatment apparatus. Fig. 4 is a schematic flow chart of another implementation of the control method provided in the embodiment of the present application, and as shown in fig. 4, the control method includes the following steps:

and S401, determining to enter a mute drying process, and controlling the fan to rotate at the rotating speed of the second fan.

The second fan rotating speed is greater than the first fan rotating speed and less than a fan preset rotating speed threshold value.

Step S402, controlling the barrel to rotate at a second barrel rotating speed.

The rotating speed of the second barrel body is greater than that of the first barrel body and less than a preset rotating speed threshold value of the barrel body.

In this application embodiment, after confirming to get into silence stoving process, control fan and staving earlier and rotate, drive the clothing of waiting to dry of stacking together in the staving and rotate for it is loose to wait to dry the clothing, improves drying efficiency, shortens when drying. And, control fan and staving low-speed rotation, can ensure that clothing treatment facility silence is dried, can also reduce power consumption.

And S403, judging whether the time length of the fan rotating at the second fan rotating speed reaches a third time length.

When the time length that the fan rotates at the second fan rotating speed reaches the third time length is determined, the clothes to be dried in the barrel body are considered to be loose, and the step S404 is performed at the moment; and when the time length of the rotation of the fan at the second fan rotating speed is determined not to reach the third time length, the clothes to be dried in the barrel body are considered to be still wound and stacked and not fully unfolded, and then the step S401 is returned.

In this embodiment of the application, the third duration may take any value not less than 30 s.

In step S404, the compressor is controlled to operate at the start frequency.

The starting frequency here may be equal to the starting frequency of the non-silent drying function.

In the embodiment of the present application, steps S405 to S411 correspond to steps S302 to S308 in the embodiment shown in fig. 3 one to one, and the implementation manner and implementation effect of steps S405 to S411 can be referred to the detailed description of the corresponding steps in the embodiment shown in fig. 3.

In step S405, it is determined whether the time period in which the compressor is operated at the start frequency reaches the first time period.

When it is determined that the period of time for which the compressor is operated at the start-up frequency reaches the first period of time, proceeding to step S406; when it is determined that the period of time during which the compressor is operated at the start-up frequency does not reach the first period of time, it returns to step S404 to continue controlling the compressor to be operated at the start-up frequency.

Step S406, an ambient temperature outside the laundry treating apparatus is acquired.

Step S407, determining whether the ambient temperature is within a preset operating temperature range of the laundry treating apparatus.

When it is determined that the ambient temperature is within the preset operating temperature range of the laundry treating apparatus, proceeding to step S408; in case that it is determined that the ambient temperature is not within the preset operation temperature range of the laundry treating apparatus, the laundry treating apparatus is controlled to stop operating, and the process proceeds to step S423.

Step S408, determining a target frequency, a first fan rotating speed and a first barrel rotating speed according to the environment temperature.

Step S409, controlling the compressor to operate at the target frequency, controlling the fan of the laundry treating apparatus to rotate at a first fan rotation speed, and controlling the tub of the laundry treating apparatus to rotate at a first tub rotation speed.

In step S410, it is determined whether the target frequency is less than or equal to a predetermined critical torque frequency.

When it is determined that the target frequency is less than or equal to the torque critical frequency, the vibration generated by the compressor needs to be suppressed, and then the process proceeds to step S411; in the case where it is determined that the target frequency is greater than the torque critical frequency, the compressor vibration does not need to be suppressed, upon which the flow proceeds to step S416.

In step S411, torque compensation is performed on the compressor to reduce vibration of the compressor.

The following steps S412 to S414 are one implementation manner of the step S309 "determining whether the compressor reaches the preset oil return condition" in the embodiment shown in fig. 3.

In step S412, it is determined whether the target frequency is less than or equal to a preset frequency threshold.

When it is determined that the target frequency is less than or equal to the preset frequency threshold, indicating that the compressor is operating at a low frequency, the refrigerant has insufficient flow rate to bring the lubricant back to the compressor, and then proceeding to step S413; when it is determined that the target frequency is greater than the predetermined frequency threshold, indicating that the compressor is operating at a lower frequency, the refrigerant has a flow rate that is capable of bringing the lubricant oil flowing from the compressor back to the compressor, and then the process proceeds to step S416.

In step S413, the duration of the target frequency being less than the preset frequency threshold is obtained.

In step S414, it is determined whether the duration reaches the fourth duration.

When it is determined that the duration of the target frequency being less than the preset frequency threshold reaches the fourth duration, it is determined that the compressor reaches the preset oil return condition and the operating frequency of the compressor needs to be increased for oil return, and then the step S415 is performed; and when the duration of the target frequency smaller than the preset frequency threshold does not reach the fourth duration, determining that the compressor does not reach the preset oil return condition, and entering step S416.

And step S415, controlling the compressor to run at a preset oil return frequency for a second time period so as to return the lubricating oil to the compressor.

The low-frequency oil return function is set, when the compressor reaches the preset oil return condition, the compressor is controlled to run for the second time at the oil return frequency, and the compressor is controlled to run at the target frequency after the oil return frequency is quitted.

In step S416, the humidity of the laundry to be treated is detected by using the humidity detecting device of the laundry treating apparatus.

Step S417, determining whether the humidity of the laundry to be processed is less than the drying humidity threshold.

When it is determined that the humidity of the laundry to be processed in the tub of the laundry processing apparatus is less than the drying humidity threshold, the laundry to be dried in the tub is considered to be dried, and then the step S418 is performed; when it is determined that the humidity of the laundry to be processed in the tub of the laundry processing apparatus is greater than or equal to the drying humidity threshold, it is determined that the laundry to be dried in the tub is not dried, and then the procedure returns to step S406 to continue the mute drying process.

The following steps S418 to S423 are one implementation of the step S312 "controlling the laundry treating apparatus to be turned off" in the embodiment shown in fig. 3.

And step S418, controlling the compressor to operate at the target frequency for a fifth time period to perform time-complementing drying on the laundry to be processed.

In the embodiment of the application, when the humidity of the clothes to be dried is determined to be smaller than the drying humidity threshold value, the compressor is continuously controlled to operate for a period of time so as to dry the clothes in a complementary mode, the humidity in the barrel is further reduced, and the clothes are fully dried.

In step S419, the compressor is controlled to stop operating.

In this embodiment of the present application, in order to prevent the high-temperature laundry from damaging the user, after the mute drying process is finished, step S420 is continuously executed to control the rotation of the blower and the tub body, so as to rapidly reduce the temperature of the dried laundry in the tub body.

In step S420, the blower is controlled to rotate at a first blower rotation speed, and the tub is controlled to rotate at a first tub rotation speed, so as to reduce the temperature of the laundry to be treated.

In step S421, the temperature of the laundry to be treated is detected by the temperature detecting device of the laundry treating apparatus.

The temperature sensing device may be disposed inside the tub to determine the temperature of the laundry in the tub by sensing the temperature of the air inside the tub. The temperature detection means may be a temperature sensor.

Step S422, determining whether the temperature of the laundry to be processed is less than a preset temperature threshold.

When it is determined that the temperature of the laundry to be processed is less than the preset temperature threshold, it is determined that the temperature of the dried laundry in the tub has been lowered to the safe temperature, and then the process proceeds to step S423; when the temperature of the laundry to be processed is determined to be greater than or equal to the preset temperature threshold, recognizing that the temperature of the dried laundry in the drum is still higher, and there is a risk of damaging the user, at this time, returning to step S420 to continue cooling.

And step 423, controlling the fan to stop rotating and controlling the barrel body to stop rotating.

According to the method provided by the embodiment of the application, the fan and the barrel body are controlled to rotate firstly, so that clothes to be dried are loosened, the drying efficiency can be improved, and the drying time is shortened; in addition, the fan and the barrel body are controlled to rotate at a low speed, so that silent drying of the clothes treatment equipment can be ensured, and the power consumption can be reduced; the target frequency, the rotating speed of the first fan and the rotating speed of the first barrel are determined according to the ambient temperature, so that the flexible operation of a mute drying program is realized; when the target frequency is less than or equal to the critical torque frequency, performing torque compensation on the compressor to reduce the vibration of the compressor, thereby reducing the noise of the operation of the compressor; when a preset oil return condition is reached, controlling the compressor to run at a preset oil return frequency so as to enable the lubricating oil to return to the compressor, and avoiding the compressor from running in a state of lacking the lubricating oil so as to enable the compressor to normally run at a low frequency; after drying is finished, time supplementing drying is carried out, and the clothes can be fully dried; finally, control fan and staving rotate, can realize rapid cooling, avoid causing user's skin injury. By the method, the noise of the clothes processing equipment for operating the drying program can be reduced, and the mute drying function is realized.

In practical applications, when the user presses the "start/pause" button after selecting the silent drying function, the laundry processing device may immediately enter the silent drying process, or may enter the silent drying process after reaching a certain set time, for example, enter the silent drying process at 0 a.m. When the clothes processing equipment is set to enter a silent drying process when reaching a certain set moment, a user can calculate the remaining time from the current time to the set moment when selecting the silent drying function, then set the reserved time, and the clothes processing equipment starts counting down after pressing a start/pause key, the counting down is finished, namely the set moment is reached, the clothes processing equipment enters the silent drying process, the user is required to calculate the remaining time and set the reserved time each time, and the operation is complicated. In order to solve the problem, in the embodiment of the present application, an operation time range of the silent drying process may be set, and if the current time is within the operation time range, the silent drying process is entered. Fig. 5 is a schematic flow chart of an implementation of controlling a laundry processing apparatus to enter a silent drying process according to an embodiment of the present application, and as shown in fig. 5, the laundry processing apparatus may be controlled to enter the silent drying process through steps S501 to S504.

Step S501, in response to a trigger operation to start the laundry treating apparatus to perform the silent drying process, acquires a preset time range to enter the silent drying process.

Here, the preset time range may be a time range set by a factory of the dryer, for example, 0 to 6 am. The actual operation time of the clothes dryer can automatically operate according to the current load and the moisture content, and generally can not exceed 6 hours. When the user 10:34 finishes washing clothes (dewatering), the clothes are put into a clothes dryer, a silent drying function (namely a night ultra-silent drying mode) is selected, a start/pause button is pressed, the machine starts counting down, the machine starts running when the point 0 is reached, and the silent drying process is determined to be started.

The preset time range can also be set by a user, for example, when the user goes to work at night, the mute drying program can be selected to run in a certain time period or other rest time periods in the day, and the operation is convenient and flexible.

Step S502, the current time is obtained.

Step S503, determining whether the current time is within a preset time range.

When the current time is determined to be within the preset time range, indicating that the time for starting mute drying set by the user is reached, then entering step S504; and when the current time is determined not to be within the preset time range, returning to the step S502 to continue waiting.

Step S504, the clothes processing device is controlled to enter a mute drying process.

After entering the silent drying process, the steps of any control method provided by the embodiment of the application are continuously executed.

According to the method provided by the embodiment of the application, the fixed preset time range is set, and the clothes processing equipment can execute the mute drying program regularly without the need of performing complicated selection setting operation by a user.

Next, an exemplary application of the embodiment of the present application in a practical application scenario will be described.

In recent years, due to the difference of regional climatic environments, the southern area is overcast and rainy and moist, and the northern area has haze, and the participation of household appliance manufacturing enterprises and channel suppliers is increased, so that the clothes dryer is rapidly increased domestically. With the increasing acceptance of clothes dryers in China, various customized requirements appear, such as quick drying, odor removal, wrinkle removal, energy conservation and the like. Through visits and investigations on user needs, it is found that the user needs for night drying are common, and they want such night drying program to have several features as follows:

1) after the machine operates at 0 o' clock late at night, the time of sleeping of the user is fully utilized, working time and daily working and rest time in the day do not need to be occupied, the advantage of urban valley electricity price can be used, and the drying cost is lower;

2) when the drying program runs, the drying program must be quite silent, and the rest of the user cannot be influenced;

3) the user can wear or store the clothes when getting up in the morning, the drying effect is good, and secondary airing of the user is not needed.

Most heat pump clothes dryers in the market at present cannot meet all the requirements, certain few machine types also increase a drying program scheduled to run at night, and although the drying program can run at night, the heat pump clothes dryers run in a normal mode, cannot meet the requirements of users on noise, and even cause troubles.

Fig. 6 is a schematic diagram of an operation process of a heat pump clothes dryer provided in an embodiment of the present application, and the following description is provided with reference to fig. 6 for explaining a principle of the heat pump clothes dryer, where the heat pump clothes dryer uses a compressor to pressurize and heat a refrigerant by using a heat pump technology, and then the refrigerant with high temperature and high pressure enters a condenser to release heat, and the condenser is connected to an air duct in the clothes dryer to release dry hot air; the refrigerant enters the capillary tube from the condenser, the pressure and the temperature are rapidly reduced, and then the refrigerant enters the evaporator, the evaporator is also connected with the drying air path, the moist hot air passing through the clothes is changed into dry cold air, and the water vapor in the clothes is condensed into small water drops and collected by the water collecting tray; the operation of the refrigerant of the heat pump system is matched with the rolling of a roller in the clothes dryer, and the drying fan realizes the clothes drying effect.

By the technical principle, the running frequency of the compressor can be obtained, the rotating speed of the roller and the rotating speed of the fan are three main parameters influencing the performance of the clothes dryer, most clothes dryer programs in the market at present run in a normal mode, and the power frequency of the fixed-frequency compressor is 50Hz of the power frequency of a power grid; for the inverter compressor, the clothes dryer usually operates at an optimal working condition frequency above 50Hz, but the normal mode has a problem that the clothes dryer basically cannot reach the highest value 55dB (decibel) specified by the national night environmental noise standard, so the normal mode is not recommended to be used at night, the sleep of a user is influenced, and the very poor user experience is caused.

Aiming at the characteristics and user requirements of the night drying program, the embodiment of the application develops the night ultra-static drying function in a targeted manner to fill the blank of the heat pump clothes dryer in the current market. Fig. 7 is a schematic diagram of another implementation flow of the control method provided in the embodiment of the present application, and as shown in fig. 7, an implementation process of the hyperstatic baking function mainly includes the following steps:

step S701, a user selects a mute drying program, clicks an operation button, starts countdown, ends the countdown and starts the clothes dryer.

The program preset time of the late-night ultra-quiet drying developed by the embodiment of the application is set to be 0 night point to 6 next morning point required by a user, but the actual operation time of the clothes dryer can automatically operate according to the current load and the water content, and generally does not exceed 6 hours.

When a user finishes washing clothes at night and puts the clothes into a clothes dryer for spin-drying, the night ultra-static drying mode is selected, the start button is started, the machine starts counting down, and the operation is started when the point 0 is reached. Of course, if the client wants to operate the night ultra-quiet drying program in the daytime or other rest time periods on weekends, the user only needs to manually change the countdown time, and the operation is convenient and flexible.

And S702, rotating the fan at the rotating speed of S0, rotating the roller at the rotating speed of G0 for 12S and 3S in a forward mode, rotating the roller for 12S and 3S in a reverse mode, and starting the compressor after 1 min.

Aims to loosen the clothes and facilitate the analysis of water in the clothes.

In step S703, the compressor is started, then the frequency is increased to the starting frequency for 60S, and then the frequency is decreased to the target operating frequency.

The heat pump system is started, the compressor is operated at the starting frequency PLAT1, and the purpose is to quickly establish high-low pressure difference in the system and quickly return lubricating oil to the compressor to keep smooth operation. Fig. 8 is a schematic diagram of the operating frequency of the compressor during the mute bake process in the embodiment of the present application, as shown in fig. 8, when the frequency of the compressor increases, the rising acceleration Up-speed may be a first acceleration, and when the frequency of the compressor decreases, the falling acceleration Dw-speed may be a second acceleration, and the first acceleration is greater than the second acceleration, so as to ensure the smooth operation of the compressor.

In step S704, the temperature detection device detects the ambient temperature Te of the current scene.

The Temperature detecting means may be an environmental thermistor having a Negative Temperature Coefficient (NTC). In the embodiment of the application, when the ambient temperature Te is not within the preset working temperature range of the clothes dryer, the machine cannot run the program, and the preset working temperature range Tmin to Tm ax can be a reasonable temperature interval recommended by a manufacturer to use the clothes dryer by a user. When the environmental temperature Te is within the preset working temperature range Tmin to Tmax of the clothes dryer, namely Tmin is more than or equal to Te and less than or equal to Tmax, the clothes dryer can run a mute drying program.

In step S705, it is determined whether the ambient temperature Te is equal to or greater than T1.

When the environmental temperature Te is more than or equal to T1 and the T1 is more than or equal to Te and less than or equal to Tmax, the step S706 is executed; when the ambient temperature Te is less than T1, Tmin. ltoreq.Te is less than T1, the process proceeds to step S707.

And judging the ambient temperature, setting a temperature limit, and selecting different operation parameters to ensure the drying effect.

Step S706, selecting a target operating parameter: compressor frequency F1, fan speed S1, drum speed G1.

Step S707, selecting target operating parameters: compressor frequency F2, fan speed S2, drum speed G2.

After the machine is started to operate, the system firstly reads the ambient temperature of the scene and automatically selects proper operation parameters, wherein the operation parameters mainly comprise the frequency of a compressor, the rotating speed of a roller and the rotating speed of a fan.

In some embodiments, the rotation speed of the drum and the wind speed of the fan can be automatically adjusted according to the change of the moisture content of the load (namely, clothes to be dried) in the clothes dryer, and the lower the moisture content is, the lower the rotation speed of the drum and the wind speed of the fan are adjusted.

The main logic is as follows: if the limit temperature Tmax is not less than the environmental temperature and not less than the preset value T1, the system runs a built-in program 1 (the main running parameters are low frequency F1 of the compressor, low speed S1 of the fan and low speed G1 of the roller); if the preset value T1 is larger than or equal to the limit temperature Tmin, the system runs a built-in program 2 (the main running parameters are low frequency F2 of the compressor, low speed S2 of the fan and low speed G2 of the roller).

In general, in order to meet the requirement of extremely low noise, the design of noise reduction of the structure of the dryer is the first, and the second is to reduce the above 3 parameters (the operating frequency of the compressor, the rotating speed of the drum and the rotating speed of the fan). Through tests and experience, the structural design of the machine itself has a limited effect on noise reduction, and the latter is mainly used for noise reduction operation. At present, the simple rotational speed that reduces amount of wind and cylinder is solved very easily through inverter motor, and also have such patent of part, but to heat pump dryer, the noise of compressor is big, and the occupation ratio is high, and the noise in compressor operation high frequency noise ratio wind channel can bring worse user experience moreover, so to whole dryer's silence design, compressor low frequency operation is extremely crucial, and compressor low frequency operation appears two problems easily: 1) the problem of low frequency vibration; 2) low frequency oil return problem.

At present, a fixed-frequency compressor is mostly used in a heat pump clothes dryer, the running frequency of the compressor is fixed, and the vibration of a compressor system can be well controlled only by adjusting a pipeline according to the fixed frequency, so that the vibration of the compressor system meets the safety requirement. Variable frequency compressor, compressor frequency is adjustable, and during the low frequency operation, the compressor rotational speed is low, and the inertia of rotor is very little, and the unbalance phenomenon will become extraordinarily obvious, and unable quick balance is breathed in, the inside gas pressure difference of carminative changes, and the undulant grow of output torque leads to compressor vibration grow, can produce resonance even and influence the normal operating of compressor.

In the embodiment of the present application, the problem of low-frequency oscillation is solved by steps S708 and S709, and the problem of low-frequency oil return is solved by steps S710 and S711.

In step S708, it is determined whether the target operating frequency of the compressor is less than or equal to the torque critical frequency.

When the target operating frequency of the compressor is less than or equal to the torque critical frequency, then the process proceeds to step S709; when the target operating frequency of the compressor is greater than the torque critical frequency, the process proceeds to step S712.

Here, the critical torque frequency may take the value of 40 Hz. The problem that the compressor vibrates excessively under low-frequency operation is solved by judging whether the compressor needs torque compensation or not.

In step S709, a torque compensation routine is executed.

When the torque compensation is carried out in the embodiment of the application, the temperature Tin of the air inlet of the compressor is detected in real time, when the temperature Tin of the air inlet of the compressor is less than Tmax, and the current value I of the torque compensation is adjusted in real time according to the temperature Tin of the air inlet of the compressor at low frequency, so that the problem of low-frequency oscillation is solved. The higher the temperature Tin of the air inlet of the compressor is, the larger the compensated current I is; when the air inlet temperature Tin of the compressor is larger than Tmax, the air volume between a condenser and an evaporator of the compressor system is small at the moment, the heat exchange amount is almost zero, the air suction and exhaust pressure difference of the gas in the compressor is too large, the vibration of the compressor cannot be inhibited by the current value of torque compensation, and the operation of the compressor needs to be stopped at the moment.

Step S710, determine whether the target operating frequency is less than or equal to the preset frequency threshold and the continuous duration exceeds the fourth duration.

When the target operating frequency is less than or equal to the preset frequency threshold and the continuous duration exceeds the fourth duration, the step S711 is entered; when the target operating frequency is greater than the preset frequency threshold, or the target operating frequency is less than or equal to the preset frequency threshold, but the duration does not exceed the fourth duration, the process proceeds to step S712.

Here, the preset frequency threshold may be 25Hz, and the fourth time period may be 30 min.

In step S711, the oil return frequency is operated for the second duration.

The compressor runs at low frequency for a long time, and the refrigerant has insufficient flow velocity to bring the lubricating oil of the compressor back to the compressor, so the compressor can be damaged after running for a long time.

Step S712, determining whether the humidity of the laundry reaches the drying humidity threshold.

Here, the humidity of the air in the tub may be detected by a humidity sensor in the drum, and the humidity of the air may be used as the humidity of the laundry, thereby determining whether the laundry is dried. When the humidity of the laundry reaches the drying humidity threshold, the process proceeds to step S713; when the laundry humidity does not reach the drying humidity threshold, the process returns to step S704.

And step S713, the machine is shut down after the time compensation operation is carried out for the fifth time.

Here, the fifth time period may take a value of 15 min.

After the machine is operated, the humidity sensor inside the drum is used for reading and judging the humidity of the air inside the drum, if the humidity is lower than a set drying humidity threshold value, the clothes are considered to be dried, and the machine can be stopped after the machine is operated in a time-compensating mode.

In the embodiment of the application, after the compressor runs safely at a low frequency, the compressor is matched with the corresponding fan rotating speed and the corresponding roller rotating speed through low-frequency torque compensation, an oil return function and wind frequency linkage, the matching parameters of three main running parameters are comprehensively obtained, and the low-noise and low-frequency stable running of the clothes dryer is realized. Through the silence program of drying by fire, not only can control the operation of dryer silence, energy efficiency ratio when inverter compressor and inverter motor low frequency low speed operation moreover can reduce power consumption. The ultra-quiet function of drying by fire night through unique machine noise reduction design and heat pump system heat exchanger design, including variable frequency compressor with extremely low frequency and extremely low fan speed and the operation of cylinder rotational speed, can really realize the ultra-silence, ultra-low temperature gentle breeze is dried, does not have any damage to the clothing, and low frequency operation means low energy consumption moreover, and stoving time can make full use of user's sleep time, accomplishes to fall asleep and dries, and it is dry to wake up.

An embodiment of a second aspect of the present application provides a laundry treating apparatus. Fig. 9 is a schematic diagram of a composition structure of a clothes treatment apparatus provided in an embodiment of the present application, and according to the exemplary structure of the clothes treatment apparatus 900 shown in fig. 9, other exemplary structures of the clothes treatment apparatus 900 can be foreseen, so that the structure described herein should not be considered as a limitation, for example, some components described below may be omitted, or components not described below may be added to adapt to special requirements of some applications.

The laundry treating apparatus 900 shown in fig. 9 includes: a processor 901, at least one communication bus 902, a user interface 903, at least one external communication interface 904 and memory 905. Wherein the communication bus 902 is configured to enable connective communication between these components. The user interface 903 may include a display panel, and the external communication interface 904 may include a standard wired interface and a wireless interface, among others. Wherein the processor 901 is configured to execute the program of the control method stored in the memory to implement the steps in the control method provided by the above-mentioned embodiments.

In the embodiment of the present application, if the control method is implemented in the form of a software functional module and sold or used as a standalone product, the control method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Accordingly, embodiments of the present application provide a computer-readable storage medium on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the control method provided in the above embodiments.

The above description of the laundry treating apparatus and the storage medium embodiment is similar to the description of the method embodiment described above, with similar advantageous effects to the method embodiment. For technical details which are not disclosed in the embodiments of the laundry treatment apparatus and the storage medium of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a product to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

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Control method, laundry treating apparatus, and computer-readable storage medium

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