Dryness determination method and drying method of clothes processing equipment and clothes processing equipment

Abstract

The embodiment of the present application discloses a method for judging dryness of a clothing processing device, a drying method and a clothing processing device, which belongs to the field of control of clothing processing devices. The method for judging dryness of the clothing processing device includes adjusting the airflow temperature of the drying airflow entering the processing drum of the clothing processing device; and determining the dryness judgment result according to the change in the temperature of the clothing before and after the airflow temperature adjustment. Since the clothing temperature is more similar to the airflow temperature of the drying airflow when the clothing is dry, the accuracy of the dryness judgment result is improved.

Description

Technical Field

[0001] The present application relates to the control field of clothing processing equipment, and in particular, to a dryness determination method and a drying method of clothing processing equipment and clothing processing equipment. Background Art

[0002] With the development of technology, the functions of clothing processing equipment are becoming more and more. In order to solve the problem of drying clothes after washing, clothing processing equipment has added a drying function. By delivering a high-temperature drying airflow into the processing drum, the humidity of the clothes in the processing drum gradually decreases until the clothes are dry.

[0003] At present, there are many clothing processing devices with drying functions, such as washing machines, washer-dryers, etc. Taking a washer-dryer as an example, when drying clothes, it is necessary to determine whether the clothes are dried. This determination process is also called dryness judgment. At present, washer-dryers usually use the air flow temperature difference at the inlet and outlet of the treatment drum to judge dryness. However, since the temperature change of the drying air flow is affected by many factors, such as the power of the heating device, wind speed, etc., it is difficult to ensure the accuracy of dryness judgment. Summary of the invention

[0004] The embodiments of the present application provide a method for determining dryness of a clothing processing device, a drying method, and a clothing processing device, so as to at least solve the technical problem of how to improve the accuracy of determining dryness.

[0005] According to a first aspect of an embodiment of the present application, a method for determining dryness of a clothes processing device is provided, the method comprising:

[0006] In response to a target signal indicating that the clothes have entered a late drying stage, adjusting the airflow temperature of the drying airflow entering a treatment drum of the clothes treatment device, wherein the late drying stage is determined according to a drying progress of the clothes;

[0007] The drying result is determined according to the temperature change of the clothes before and after the air flow temperature is adjusted, wherein the drying progress is determined according to the temperature change rate of the clothes.

[0008] By adopting this embodiment, when the clothes enter the late stage of drying, it is proved that the moisture content of the clothes is low. At this time, the clothes are judged to be dry, so that the timing of the dry judgment is accurate, thereby making the accuracy of the data obtained when judging dry higher, and not easy to cause misjudgment due to inaccurate data, thereby improving the accuracy of the dry judgment. In addition, judging dry when the moisture content of the clothes is low can effectively reduce the number of dry judgments, reduce the amount of calculation and the occupation of computing resources. At the same time, when judging the clothes to be dry, the airflow temperature of the drying airflow is actively adjusted so that the airflow temperature of the drying airflow changes, and then the dry judgment result is determined according to the change of the clothes temperature before and after the change of the airflow temperature. Because when the clothes are at a high degree of dryness, the clothes temperature is highly similar to the airflow temperature of the drying airflow, so that the accuracy of the dry judgment result is improved.

[0009] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining the dryness result according to the change in the temperature of the clothes before and after the air flow temperature is adjusted includes:

[0010] A first clothing temperature change rate is determined according to the clothing temperature change condition, so as to determine the dryness determination result by using the first clothing temperature change rate.

[0011] In this implementation, the first clothing temperature change rate is the rate of change of the clothing temperature within a certain period of time. The higher the rate of change, the easier it is for the clothing temperature to change under the influence of the airflow temperature of the drying airflow, that is, the faster the response speed of the clothing temperature change. Therefore, compared with the change of the temperature value, the dryness judgment result is determined according to the first clothing temperature change rate, which improves the accuracy of the dryness judgment result.

[0012] In combination with the first aspect, in an optional implementation of the embodiment of the present application, adjusting the airflow temperature of the drying airflow entering the processing drum of the clothes processing device includes:

[0013] a first stage of adjusting the airflow temperature from a first airflow temperature to a second airflow temperature and a second stage of adjusting the airflow temperature from the second airflow temperature to a third airflow temperature, wherein the second airflow temperature is greater than the first airflow temperature and the third airflow temperature;

[0014] The determining of a first clothing temperature change rate according to the clothing temperature change condition, and using the first clothing temperature change rate to determine the dryness determination result, includes:

[0015] Determining a temperature increase rate according to a change in the temperature of the clothing in the first stage;

[0016] determining a cooling rate according to a change in the temperature of the clothing in the second stage;

[0017] The first clothing temperature change rate is determined according to the calculation results of the temperature increase change rate and the temperature decrease change rate, so as to determine the dryness determination result by using the first clothing temperature change rate.

[0018] By adopting the present implementation method, the air flow temperature is first controlled to rise, and then the air flow temperature is controlled to fall. On the one hand, two temperature change rates of the clothes can be obtained, namely the heating change rate and the cooling change rate. Then, the dryness judgment result can be determined according to the heating change rate and the cooling change rate, thereby improving the accuracy of the dryness judgment. On the other hand, heating up first and then cooling down makes it difficult for the temperature of the clothes to be too high, which helps to protect the clothes and reduce damage to the clothes.

[0019] In combination with the first aspect, in an optional implementation of the embodiment of the present application, determining the first clothing temperature change rate according to the calculation results of the temperature increase change rate and the temperature decrease change rate, so as to determine the dryness determination result by using the first clothing temperature change rate, includes:

[0020] Calculating the absolute value of the difference between the temperature increase rate and the temperature decrease rate to obtain the first clothing temperature change rate;

[0021] If the temperature change rate of the first clothing exceeds a preset first rate threshold, determining that the drying result is not dried;

[0022] If the temperature change speed of the first clothing does not exceed the first rate threshold, the drying result is determined to be drying completion.

[0023] By adopting this implementation method, the difference is used to determine the change rate of the first clothing temperature, which is simple to calculate and helps to improve the dryness determination efficiency and reduce the resource occupation during the dryness determination.

[0024] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the method further includes:

[0025] If the drying result is not dried, the clothes processing device is controlled to continue drying the clothes, and the air flow temperature of the drying air flow entering the processing drum of the clothes processing device is adjusted again.

[0026] By adopting the present implementation method, the clothing processing equipment will be controlled to continue drying the clothes when they are not dried, and the air flow temperature will be adjusted again, so that after the air flow temperature is adjusted, the clothes will be judged dry again, so that the clothes can be judged dry in time when the dryness is relatively high, reducing the drying time, improving the drying efficiency, and avoiding damaging the clothes by drying them when the dryness is relatively high.

[0027] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the method further includes:

[0028] Controlling the clothes processing device to deliver a drying airflow with a constant heat into the processing drum, wherein the constant heat means that the heat carried by the drying airflow entering the processing drum is equal within a unit time, wherein the heat carried by the drying airflow is determined by the airflow volume and / or airflow temperature of the drying airflow;

[0029] Obtaining a temperature change of the clothing within a preset third time period;

[0030] Obtaining a second clothing temperature change rate according to the temperature change amount and the third time period;

[0031] If the second clothing temperature change rate is lower than a preset second rate threshold, it is determined that the clothing has entered the late drying stage.

[0032] By adopting this implementation method, when judging whether the clothes have entered the late drying stage, the second clothing temperature change rate is used for judgment under the condition of a drying airflow with constant heat, which helps to improve the accuracy of determining whether the clothes have entered the late drying stage, thereby improving the accuracy of judging the drying timing.

[0033] In combination with the first aspect, in an optional implementation of the embodiment of the present application, after determining the dryness result according to the change in the temperature of the clothes before and after the air flow temperature is adjusted, the method further includes:

[0034] The clothing humidity of the clothing is obtained, and if the clothing humidity does not exceed a preset humidity threshold, verification information indicating that the dryness determination result is accurate is generated.

[0035] With this implementation, after obtaining the dryness determination result, the dryness determination result will be verified in combination with the clothing humidity, which helps to improve the accuracy of the dryness determination result.

[0036] According to a second aspect of an embodiment of the present application, a drying method is provided, comprising:

[0037] A drying phase that delivers a constant amount of heat to the drying cylinder, and

[0038] The dryness judging stage adopts the dryness judging method described above.

[0039] According to a third aspect of an embodiment of the present application, there is provided an electronic device, the electronic device comprising a memory and a processor;

[0040] The memory is used to store computer programs;

[0041] The processor is used to execute the computer program to implement the steps of the method described above.

[0042] According to a fourth aspect of an embodiment of the present application, there is provided a clothing processing device which uses the above-mentioned method to judge whether a clothing is dry or includes the above-mentioned electronic device.

[0043] In combination with the fourth aspect, in an optional implementation of the embodiment of the present application, the clothing processing device includes at least one of a washing machine and a washer-dryer.

[0044] The technical effects obtained in the above-mentioned second to fourth aspects are similar to the technical effects obtained by the corresponding technical means in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a flow chart of a method for determining dryness of a clothes processing device provided in an embodiment of the present application;

[0046] Figure 2 It is a flow chart of determining a dryness determination result by heating and cooling in a method for determining dryness of a clothes processing device provided in an embodiment of the present application;

[0047] Figure 3 This is a flow chart of determining a dryness determination result by using a temperature increase change rate and a temperature decrease change rate in a method for determining dryness of a clothes processing device provided in an embodiment of the present application;

[0048] Figure 4 A flowchart for determining to enter the late drying stage in a method for judging drying of a clothes processing device provided in an embodiment of the present application;

[0049] Figure 5 is a flowchart of a clothes drying process in a specific implementation of a method for determining dryness of a clothes processing device provided in an embodiment of the present application;

[0050] Figure 6 This is a flow chart for determining to enter the late drying stage in a specific implementation of a method for judging drying of a clothes processing device provided in an embodiment of the present application;

[0051] Figure 7 It is an overall flow chart of the drying process in a specific implementation of a method for determining dryness of a clothes processing device provided in an embodiment of the present application;

[0052] Figure 8 It is a structural block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0054] It should be understood that the "plurality" mentioned in this article refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and so on are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and so on do not limit the quantity and execution order, and the words "first", "second" and so on do not limit certain different

[0055] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0056] With the accelerated pace of life, many people are troubled by the washing and drying of large items of clothing such as sweaters and cotton-padded clothes. Hand washing is too tiring, dry cleaning is too expensive, and drying is even more troublesome. Wet clothes cannot be dried for a long time in cold weather. The invention of the all-in-one washer-dryer solves these problems. The all-in-one washer-dryer is a new type of intelligent washing machine that adds a drying function to a fully automatic washing machine, integrating multiple functions of washing, spinning and drying.

[0057] Accurately judging the dryness of a washing and drying machine and drying without damaging clothes have always been the goal that technicians in this field have been committed to achieving. When the existing washing and drying machine runs the drying program, it obtains the temperature values ​​of different positions in the inner drum and calculates the temperature difference before and after the different positions to determine whether the clothes in the drum are dried.

[0058] The above-mentioned method for judging whether clothes are dry is to convert the change in moisture content of clothes by the change in temperature difference, but the ambient temperature of the inner drum is relatively complicated. The above-mentioned method cannot compare the temperature difference more accurately when the temperature in the drum reaches a constant value in the later stage of drying, which leads to misjudgment of clothes being dry. This makes the washer-dryer adopting the above-mentioned scheme prone to inaccurate judgment of the end of drying, resulting in insufficient drying of clothes or excessive drying of clothes, which damages clothes, and wastes water and electricity resources.

[0059] Based on this, the embodiment of the present application provides a method for judging dryness of a clothes processing device, referring to Figure 1 The flowchart of the method for judging dryness of a clothes processing device is shown, and the method includes the following processing procedures.

[0060] S100: In response to a target signal indicating that the clothes have entered a late drying stage, adjusting the airflow temperature of the drying airflow entering a treatment drum of a clothes treating device.

[0061] Among them, the late drying period is determined according to the drying progress of the clothes, wherein the drying progress is determined according to the temperature change rate of the clothes. It should be noted that since the drying process is divided into the late drying period, a pre-drying period corresponding to the late drying period will be formed. In some application scenarios, a mid-drying period can also be set between the early drying period and the late drying period. Since the late drying period in this embodiment is determined according to the drying progress of the clothes, the early drying period and the mid-drying period are also determined according to the drying progress of the clothes. It should be noted that the division of the pre-drying period, the middle drying period and the late drying period has nothing to do with the time used for drying, but is related to the drying progress of the clothes. In this embodiment, the drying progress of the clothes refers to the degree of dryness of the clothes, that is, the higher the dryness of the clothes, the later the drying progress. Therefore, the entire drying process can be divided into the pre-drying period, the middle drying period and the late drying period by pre-setting a threshold value.

[0062] It can be determined that when the drying end is reached cannot be known or set in advance, but is determined according to the actual drying progress of the clothes. For example, when it is detected that the dryness of the clothes reaches 20%, it is determined to be in the early stage of drying, when the dryness reaches 30%, it is determined to enter the middle stage of drying, and when the dryness reaches 90%, it is determined to enter the late stage of drying. Among them, the dryness of the clothes can be obtained by detecting the temperature or moisture content of the clothes, and this embodiment does not make specific restrictions on this. For example, the lower the moisture content, the higher the dryness, and the higher the moisture content, the lower the dryness; for another example, from the beginning of drying to the end of drying, the temperature change rate of the clothes shows the characteristics of first small, tending to be stable, and then large. Therefore, when the temperature change rate changes at a lower speed, it is determined that the dryness is low and belongs to the early stage of drying. When the temperature change rate tends to be stable, it is determined that the dryness is average and belongs to the middle stage of drying. When the temperature change rate is large, it is determined that the dryness is high and enters the late stage of drying.

[0063] When it is detected that the clothes have entered the late stage of drying, the target signal will be responded to. It should be noted that the target signal is not specifically limited in this embodiment, and the purpose is to enter the drying judgment program.

[0064] Specifically, after the dryness judgment program is executed, the airflow temperature of the drying airflow is adjusted first. It should be noted that the drying airflow will flow in the drying air duct, and different temperatures may appear at different positions. For example, after the drying airflow passes through the heating device, the temperature becomes higher, and then it reaches the air inlet of the processing drum along the drying air duct. At this time, the temperature of the drying airflow remains almost unchanged, and then enters the interior of the processing drum to exchange heat with the clothes, the temperature decreases and the humidity increases, and then it flows back from the air outlet of the processing drum along the drying air duct to the heating device to heat up. In this embodiment, adjusting the airflow temperature of the drying airflow specifically refers to adjusting the airflow temperature of the drying airflow after passing through the heating device and not exchanging heat with the clothes. The adjustment direction includes heating up and cooling down. Among them, the airflow temperature is adjusted by increasing / decreasing the power of the heating device, starting / shutting down the number of heating devices, etc.

[0065] S102: Determine a dryness determination result according to the temperature change of the clothes before and after the air flow temperature is adjusted.

[0066] If the dryness of the clothes is high, the temperature of the clothes will change with the temperature of the drying airflow, so the dryness result can be determined by the change in the temperature of the clothes.

[0067] It should be noted that since the temperature change of the clothes is needed, the temperature of the clothes needs to be measured. When measuring, the temperature of the surface of the clothes can be collected by means of a temperature sensor arranged in the inner drum that can contact the surface of the clothes. When collecting the temperature of the clothes, a collection cycle can be preset, and a temperature value representing the surface temperature of the clothes can be obtained at intervals, thereby obtaining a value representing the temperature of the clothes before and after the airflow temperature is adjusted, so as to obtain the temperature change of the clothes.

[0068] By adopting this embodiment, when the clothes enter the late stage of drying, it is proved that the moisture content of the clothes is low. At this time, the clothes are judged to be dry, so that the timing of the dry judgment is accurate, thereby making the accuracy of the data obtained when judging dry higher, and not easy to cause misjudgment due to inaccurate data, thereby improving the accuracy of the dry judgment. In addition, judging dry when the moisture content of the clothes is low can effectively reduce the number of dry judgments, reduce the amount of calculation and the occupation of computing resources. At the same time, when judging the clothes to be dry, the airflow temperature of the drying airflow is actively adjusted so that the airflow temperature of the drying airflow changes, and then the dry judgment result is determined according to the change of the clothes temperature before and after the change of the airflow temperature. Because when the clothes are at a high degree of dryness, the clothes temperature is highly similar to the airflow temperature of the drying airflow, so that the accuracy of the dry judgment result is improved.

[0069] In a possible embodiment of the present application, determining the dryness result according to the change in the temperature of the clothes before and after the air flow temperature is adjusted includes:

[0070] A first clothing temperature change rate is determined according to the clothing temperature change condition, so as to determine a dryness determination result by using the first clothing temperature change rate.

[0071] Among them, after knowing the change of clothing temperature, the change value of clothing temperature before and after the air flow temperature is adjusted can be known, and the first clothing temperature change rate can be determined based on this.

[0072] Preferably, the calculation of the first clothing temperature change rate may be a ratio of a difference in clothing temperature before and after the airflow temperature is adjusted to time, where the time is the length of time between two clothing temperature acquisitions.

[0073] Preferably, the calculation of the first clothing temperature change rate may be performed by taking the derivative of the difference between the clothing temperatures before and after the airflow temperature is adjusted with respect to time, where the time is the length of time between two times of collecting the clothing temperatures.

[0074] In this implementation, the first clothing temperature change rate is the rate of change of the clothing temperature within a certain period of time. The higher the rate of change, the easier it is for the clothing temperature to change under the influence of the airflow temperature of the drying airflow, that is, the faster the response speed of the clothing temperature change. Therefore, compared with the change of the temperature value, the dryness judgment result is determined according to the first clothing temperature change rate, which improves the accuracy of the dryness judgment result.

[0075] Optionally, in an implementation of this embodiment, adjusting the airflow temperature of the drying airflow entering the processing drum of the clothes processing device includes:

[0076] A first stage of adjusting the airflow temperature from a first airflow temperature to a second airflow temperature and a second stage of adjusting the airflow temperature from the second airflow temperature to a third airflow temperature, wherein the second airflow temperature is greater than the first airflow temperature and the third airflow temperature.

[0077] It should be noted that when adjusting the airflow temperature, the purpose is to change the airflow temperature, and the specific control process is not limited in this embodiment. Taking the adjustment from the first airflow temperature to the second airflow temperature as an example, when the airflow temperature is the first airflow temperature, the heating device used to heat the airflow can be controlled to continuously heat the drying airflow, or it can be intermittently heated so that the airflow temperature rises from the first airflow temperature to the second airflow temperature. When cooling, the airflow temperature can be reduced from the second airflow temperature to the third airflow temperature by introducing air with a temperature lower than the second airflow temperature, or the heating device can be controlled to heat intermittently so that the airflow temperature is reduced.

[0078] like Figure 2As shown, determining a first clothing temperature change rate according to the clothing temperature change condition, and using the first clothing temperature change rate to determine a dryness determination result, includes:

[0079] S300: Determine a temperature increase rate according to the temperature change of the underwear in the first stage.

[0080] The process of determining the temperature rise rate is as follows:

[0081] In the first stage, a third temperature of the clothes is obtained when the clothes are at the first airflow temperature, and a fourth temperature of the clothes is obtained when the clothes are at the second airflow temperature and after a preset second time period.

[0082] determining a change in the temperature of the clothes in the first stage according to the third clothes temperature and the fourth clothes temperature;

[0083] According to the temperature change of the clothes in the first stage and the second time period, the temperature increase rate is obtained.

[0084] S302: Determine a cooling rate according to the temperature change of the underwear in the second stage.

[0085] The process of determining the temperature drop rate is as follows:

[0086] In the second stage, a fifth temperature of the clothes is obtained when the clothes are at the second airflow temperature, and a sixth temperature of the clothes is obtained when the clothes are at the third airflow temperature and after a fourth time period.

[0087] determining a change in the temperature of the clothes in the second stage according to the fifth temperature of the clothes and the sixth temperature of the clothes;

[0088] According to the temperature change of the clothes in the second stage and the fourth time period, the temperature drop change rate is obtained.

[0089] It should be noted that the third airflow temperature may be the same as the first airflow temperature, and the fourth time period may be the same as the second time period. Preferably, the third airflow temperature is the same as the first airflow temperature, and the fourth time period is the same as the second time period.

[0090] S304: Determine a first clothing temperature change rate according to the calculation results of the temperature increase change rate and the temperature decrease change rate, so as to determine a dryness determination result using the first clothing temperature change rate.

[0091] By adopting this embodiment, the air flow temperature is first controlled to increase, and then the air flow temperature is controlled to decrease. On the one hand, two temperature change rates of the clothes can be obtained, namely the heating change rate and the cooling change rate. Then, the dryness judgment result can be determined according to the heating change rate and the cooling change rate, thereby improving the accuracy of the dryness judgment. On the other hand, heating up first and then cooling down makes it difficult for the temperature of the clothes to be too high, which helps to protect the clothes and reduce damage to the clothes.

[0092] Optionally, in an implementation of this embodiment, as Figure 3 As shown, determining the first clothing temperature change rate according to the calculation results of the temperature increase change rate and the temperature decrease change rate, and determining the dryness determination result by using the first clothing temperature change rate, includes:

[0093] S400: Calculate the absolute value of the difference between the temperature increase rate and the temperature decrease rate to obtain a first clothing temperature change rate.

[0094] S402: If the temperature change rate of the first clothing exceeds a preset first rate threshold, determine that the drying result is not dried.

[0095] The first rate threshold value ranges from 0 to 0.3°C / min, preferably from 0°C / min to 0.1°C / min.

[0096] S404: If the temperature change rate of the clothes does not exceed the first rate threshold, determine that the drying result is completed.

[0097] By adopting this embodiment, the temperature change rate of the first clothing is determined by using the difference, which is simple to calculate and helps to improve the efficiency of dryness determination and reduce the resource occupation during dryness determination.

[0098] Optionally, in an implementation of this embodiment, the method further includes:

[0099] If the drying result is that the clothes are not dried, the clothes processing device is controlled to continue drying the clothes, and the air flow temperature of the drying air flow entering the processing drum of the clothes processing device is adjusted again.

[0100] That is to say, when the drying result is not dried, the airflow temperature will be adjusted again, so as to perform another round of drying judgment and generate the corresponding drying result, until the drying result is drying completed. In an application scenario, each time the airflow temperature is adjusted, the airflow temperature is adjusted from the first airflow temperature to the second airflow temperature, and then from the second airflow temperature to the first airflow temperature. In each drying process, the initial value of the airflow temperature of the drying airflow is the first airflow temperature.

[0101] By adopting the present implementation method, the clothing processing equipment will be controlled to continue drying the clothes when they are not dried, and the air flow temperature will be adjusted again, so that after the air flow temperature is adjusted, the clothes will be judged dry again, so that the clothes can be judged dry in time when the dryness is relatively high, reducing the drying time, improving the drying efficiency, and avoiding damaging the clothes by drying them when the dryness is relatively high.

[0102] Optionally, in an implementation of this embodiment, as Figure 4 As shown, the method also includes:

[0103] The clothes processing device is controlled to deliver a drying airflow with a constant heat into the processing drum, wherein the constant heat means that the heat carried by the drying airflow entering the processing drum is equal within a unit time, wherein the heat carried by the drying airflow is determined by the airflow volume and / or airflow temperature of the drying airflow. In other words, the greater the airflow volume of the drying airflow entering the processing drum, the more heat the drying airflow carries, and the higher the airflow temperature of the drying airflow entering the processing drum, the more heat the drying airflow carries. The amount of heat carried by the drying airflow is the amount of heat entering the processing drum for heat exchange with the clothes.

[0104] S500: Obtain a temperature change of the clothes within a preset third time period.

[0105] Since the heat of the drying airflow is constant, the temperature of the clothes is obtained once at every preset period, and the temperature of the clothes obtained this time is subtracted from the temperature of the clothes obtained last time to obtain the temperature change. The preset period is the third time period.

[0106] S502: Obtain a second clothing temperature change rate according to the temperature change amount and the third time period.

[0107] S504: If the temperature change rate of the second clothing is lower than a preset second rate threshold, it is determined that the clothing has entered the late drying stage.

[0108] By adopting this implementation method, when judging whether the clothes have entered the late drying stage, the second clothing temperature change rate is used for judgment under the condition of a drying airflow with constant heat, which helps to improve the accuracy of determining whether the clothes have entered the late drying stage, thereby improving the accuracy of judging the drying timing.

[0109] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The steps shown in the relevant flow chart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that here. In other words, the order of steps described in the foregoing embodiments is only an example, and it is also within the scope of protection of the embodiments of the present application to reasonably adjust the order of steps based on the content of the embodiments of the present application.

[0110] In a specific implementation of the embodiment of the present application, the method for judging whether a clothes treatment device is dry includes the following processing steps:

[0111] like Figure 5-7 As shown, a clothes dryer or a washer-dryer is used as the clothing processing device for explanation.

[0112] Clothes drying means that the dryer or washer-dryer runs the drying program to heat the air inside the device, allowing the high-temperature air flow to flow over the surface of wet clothes, heating the clothes and taking away the evaporated moisture, making the clothes dry quickly. It is the process of drying wet clothes with a certain amount of moisture to a specified range.

[0113] According to the clothes drying process, the state of clothes in the equipment is divided into three stages:

[0114] like Figure 5 As shown in the figure, the first stage is the drying speed increase stage. In this stage, the wet fabric adjusts its temperature and humidity in the environment. The fabric temperature rises faster, providing the vaporization heat required for moisture movement, but the moisture content does not change significantly, and the drying efficiency is low. The second stage is the drying constant speed stage, that is, constant speed drying. The fabric surface is completely wet, and the moisture transferred from the inside to the surface is equal to the moisture evaporated from the surface to the air. The heat transferred from the environment to the fabric is the same as the heat required for moisture vaporization, and the heat transfer and moisture transfer reach a dynamic balance. In the dynamic balance process of heat transfer rate and moisture transfer rate, the drying rate is maintained constant, and water migrates inside the fabric to maintain the saturated state of the fiber surface. The third stage is the drying speed reduction stage. With the decrease of fabric moisture content, the rate of moisture migration from the inside of the fabric to the fabric surface is lower than the vaporization rate of moisture on the fabric surface. The moisture migrated to the fabric surface is not enough to maintain the saturated state, evaporation begins to enter the fabric, and the fiber begins to release moisture. At the end of drying, the fabric is close to dry, the moisture content changes little, the temperature rises further, and finally reaches a balance with the drying temperature, and the fabric is completely dry.

[0115] This application mainly utilizes the different specific heat values ​​of clothes and water to provide equal amount of heat energy per unit time during the drying process. Due to the different moisture content of clothes, that is, the weight change of clothes and water in clothes, the surface temperature of clothes is detected by a temperature detection device to determine the heating rate of clothes. By comparing with the set temperature rate threshold, the drying stage of the clothes in the drying device is determined.

[0116] At the same time, during the deceleration drying stage, the clothes are close to being dry and the moisture content changes little. By changing the drying temperature in the barrel and comparing the difference in the rates of heating and deceleration, the drying state of the clothes in the drying device can be judged.

[0117] like Figure 6 As shown, during the drying process, the surface temperature of the clothes is used to determine the drying stage of the clothes. Preferably, it is divided into three stages, namely the early drying stage, the middle drying stage and the late drying stage. The early drying stage is the drying speed increase stage, the middle drying stage is the drying speed constant stage, and the late drying stage is the drying speed decrease stage. For ease of understanding, as the clothes are dried, the moisture in the clothes gradually decreases, the drying temperature gradually reaches the required drying temperature, and the rate of water loss of the clothes begins to decrease, which is called the speed decrease drying stage. The stage of drying in which the clothes are determined includes:

[0118] S10: The user first starts the clothes washer-dryer or clothes dryer, the washer-dryer is powered on, and the components of the washer-dryer are working before operation preparation. The user makes a basic judgment on the machine status before drying according to the working status of the washer-dryer or clothes dryer to ensure that the washer-dryer is in good condition when drying clothes. The clothes to be dried are placed in the washer-dryer or clothes dryer as required, and the corresponding drying program is selected according to the type and material of the clothes. The washer-dryer or clothes dryer is operated;

[0119] S11: The clothes washer-dryer or clothes dryer starts to heat the air inside the device under the action of the electric heating tube or the heat pump system, and at the same time starts the circulation system, the hot air starts to flow, and heats the clothes to be dried inside the device, and the temperature sensor detects the surface temperature of the clothes.

[0120] S12: Detecting the surface temperature of the clothing by real-time monitoring, and determining the heating rate Vt within a specified time t, where the specified time t may be 0.5 min to 10 min, preferably 1 min;

[0121] S13: Since the heating power and wind speed and volume of the circulation system of the clothes washer-dryer or clothes dryer are uncertain, different drying states of the clothes are determined according to different heating rates set for the clothes; it is mainly divided into a drying speed increase stage when it is greater than 1.0℃ / min, a drying constant speed stage when it is 0.5℃ / min to 1.0℃ / min, and a drying speed decrease stage (i.e. the late drying stage) when it is less than 0.5℃ / min.

[0122] like Figure 7 As shown in the figure, the overall drying process of clothes includes:

[0123] S20: The user first starts the clothes washer-dryer or clothes dryer, and the clothes washer-dryer is powered on;

[0124] S21: Select a corresponding drying program according to the type and material of the clothes, and the clothes washer-dryer or clothes dryer operates;

[0125] S22: The air inside the equipment is heated, and the circulation system is turned on at the same time, the hot air starts to flow and starts drying;

[0126] S23: Detecting the surface temperature of the clothing through real-time monitoring;

[0127] S24: According to the drying stage judgment logic, determine whether the clothes drying is in the speed-down drying stage according to the drying clothes temperature rise rate Vt, if not, continue drying until the clothes drying is in the speed-down drying stage;

[0128] S25: If it is determined that the clothes drying speed is in the slowing-down stage, the controller controls the temperature to be raised T rise, T rise can be 5°C to 20°C, preferably 5°C to 10°C; and after running for t1 time, the rate of change of the clothes surface temperature V rise is detected; at this time, the prescribed time t1 can be 1min to 10min, preferably 5min;

[0129] S26: After the temperature increase adjustment, the controller controls the temperature increase Vdrop, which can be 5°C to 20°C, preferably 5°C to 10°C; and after running for t1 time, the clothing surface temperature change rate Vrise is detected; at this time, the specified time t1 can be 1min to 10min, preferably 5min; the purpose of heating up first and then cooling down here is to prevent the temperature from being too high and damaging the clothes after a misjudgment of drying or incomplete drying occurs. The main reason is that the temperature will be increased again when drying is judged next time. If the cooling mode is not used at the beginning, the drying temperature of the clothes will be further increased, causing the clothes to be damaged due to excessive temperature. Therefore, there must be a cooling process in the drying control process.

[0130] S27: By comparing the temperature changes of the clothes after the clothes are heated and cooled, the clothes drying process is determined. The main basis is that the specific heat of the clothes and water in the wet clothes is inconsistent, and the rates of heating and cooling are inconsistent. When the clothes to be dried are dried, the moisture is eliminated and only the dry clothes are left. When a fixed energy is given, the heating and cooling changes of the clothes tend to be consistent. That is, the comparison is │V rise-V fall│≤V change threshold. At this time, the V change threshold can be 0℃ / min to 0.3℃ / min, preferably 0℃ / min to 0.1℃ / min;

[0131] S28: After the system determines that |V rise - V fall |> V change threshold, it means that the temperature change value of heating and cooling is too large, and there is still a certain amount of moisture inside the clothes. The clothes are not dry, and further drying is required;

[0132] S29: After the system determines, when |V rise - V fall | ≤ V change threshold, it means that the temperature change value of heating and cooling is not large, the clothes do not contain moisture, and the clothes are dry;

[0133] S30: After the clothes are dried, the heating is stopped, the air is blown to cool down, and the drying is finished.

[0134] The above is an example of the method embodiment according to the present application. The embodiment of the present invention further provides a drying method, comprising:

[0135] A drying phase that delivers a constant amount of heat to the drying cylinder, and

[0136] The above-mentioned method of judging stems is used in the judging stage.

[0137] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a method for determining dryness of a clothes processing device, and the processor is configured to adopt the above-mentioned method for determining dryness of a clothes processing device when executing the method for determining dryness of a clothes processing device.

[0138] Specifically, Figure 8 As shown, the electronic device includes a processor 100, at least one communication bus 200, a user interface 300, at least one external communication interface 400 and a memory 500. The communication bus 200 is configured to realize the connection and communication between these components. The user interface 300 may include a display screen, and the external communication interface 400 may include a standard wired interface and a wireless interface. The memory 500 stores a method for judging whether a clothing treatment device is dry. The processor 100 is used to adopt the above method when executing the method for judging whether a clothing treatment device is dry stored in the memory 500.

[0139] The description of the above computer program product, computer-readable storage medium, and electronic device is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the computer program product, computer-readable storage medium, and electronic device of this application, please refer to the description of the method embodiment of this application for understanding.

[0140] The sequence of serial numbers or introduction of the embodiments of the present application is for description only and does not represent the superiority or inferiority of the embodiments.

[0141] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0142] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0143] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0144] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiment of the present application may be a non-volatile storage medium, in other words, a non-transient storage medium.

[0145] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the embodiments of this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of this application are all obtained with full authorization.

[0146] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for judging whether a clothes processing device is dry, characterized in that: The method comprises: In response to a target signal indicating that the clothes have entered a late drying stage, adjusting the air flow temperature of the drying air flow entering a treatment drum of the clothes treatment device, wherein the late drying stage is determined according to a drying progress of the clothes, wherein the drying progress is determined according to a temperature change rate of the clothes; Determining a dryness result according to a change in the temperature of the clothes before and after the air flow temperature is adjusted; The step of determining the dryness result according to the change in temperature of the clothes before and after the air flow temperature is adjusted includes: Determine a first clothing temperature change rate according to the clothing temperature change condition, and use the first clothing temperature change rate to determine the dryness determination result; The step of adjusting the air flow temperature of the drying air flow entering the processing drum of the clothes processing device comprises: a first stage of adjusting the airflow temperature from a first airflow temperature to a second airflow temperature and a second stage of adjusting the airflow temperature from the second airflow temperature to a third airflow temperature, wherein the second airflow temperature is greater than the first airflow temperature and the third airflow temperature; The determining of a first clothing temperature change rate according to the clothing temperature change condition, and using the first clothing temperature change rate to determine the dryness determination result, includes: Determining a temperature increase rate according to a change in the temperature of the clothing in the first stage; determining a cooling rate according to a change in the temperature of the clothing in the second stage; determining the first clothing temperature change rate according to the calculation results of the temperature increase change rate and the temperature decrease change rate, so as to determine the dryness determination result by using the first clothing temperature change rate; The determining the first clothing temperature change rate according to the calculation results of the temperature increase change rate and the temperature decrease change rate, so as to determine the dryness determination result by using the first clothing temperature change rate, comprises: Calculating the absolute value of the difference between the temperature increase rate and the temperature decrease rate to obtain the first clothing temperature change rate; If the temperature change rate of the first clothing exceeds a preset first rate threshold, determining that the drying result is not dried; If the first clothing temperature change rate does not exceed the first rate threshold, the drying result is determined to be drying completion.

2. The method for determining dryness according to claim 1, characterized in that: The method further comprises: If the drying result is not dried, the clothes processing device is controlled to continue drying the clothes, and the air flow temperature of the drying air flow entering the processing drum of the clothes processing device is adjusted again.

3. The method for determining dryness according to claim 1, characterized in that: The method further comprises: Controlling the clothes processing device to deliver a drying airflow with a constant heat into the processing drum, wherein the constant heat means that the heat carried by the drying airflow entering the processing drum is equal within a unit time; Acquiring a temperature change of the clothing within a preset third time period; Obtaining a second clothing temperature change rate according to the temperature change amount and the third time period; If the second clothing temperature change rate is lower than a preset second rate threshold, it is determined that the clothing has entered the late drying stage.

4. The dryness determination method according to claim 1, characterized in that: After determining the dryness determination result according to the change in the temperature of the clothes before and after the air flow temperature is adjusted, the method further includes: The clothing humidity of the clothing is obtained, and if the clothing humidity does not exceed a preset humidity threshold, verification information indicating that the dryness determination result is accurate is generated.

5. A drying method, characterized in that: include: A drying phase that delivers a constant amount of heat to the drying cylinder, and A dryness judging stage using the dryness judging method as described in any one of claims 1-2.

6. An electronic device, characterized in that: The electronic device comprises a memory and a processor; The memory is used to store computer programs; The processor is used to execute the computer program to implement the steps of the method described in any one of claims 1 to 4.

7. A clothes processing device, characterized in that: The electronic device is dried by the method described in any one of claims 1 to 4 or by the drying method described in claim 5 or includes the electronic device described in claim 6.

8. The clothes processing device according to claim 7, characterized in that: The clothes processing device includes at least one of a washing machine and a washer-dryer.

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