Laundry treating apparatus, control method thereof, and computer apparatus

Abstract

The invention relates to the technical field of clothes treatment, in particular to clothes treatment equipment, a control method thereof and computer equipment, and aims to solve the problems that in the prior art, thread scraps or impurities on a filter screen are not cleaned in time, so that the performance of a clothes care machine is affected, and time and labor are wasted due to frequent cleaning. In order to achieve the purpose, the control method comprises the steps that when or after a total drying value is larger than or equal to a drying threshold value, the first refrigerant temperature and the second refrigerant temperature of a drying module, the first temperature at an air outlet, the second temperature at an air return opening and the humidity in a clothes containing cavity are obtained, and whether the filtering component is blocked or not is judged based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature and the humidity. Whether the filtering component is blocked or not can be accurately judged by monitoring the total drying value, the refrigerant temperature, the air temperature and the humidity, a user only needs to clean the filtering component when it is determined that the filtering component is blocked, the performance of the clothes care machine can be ensured, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes processing, and particularly provides a clothes processing device, a control method thereof, and a computer device. BACKGROUND

[0002] With the improvement of people's living standards, the use of clothes care machines is becoming more and more common. The clothes to be cared are usually hung in the cabinet of the clothes care machine. The hot air from the circulating air duct enters the cabinet through the air outlet, exchanges heat with the clothes in the cabinet, and then the wet hot air returns to the circulating air duct through the air return. For example, the circulating air duct is provided with a heat pump system, which includes a compressor, a condenser and an evaporator. The wet hot air first exchanges heat with the condenser to cool down, and then exchanges heat with the evaporator to warm up. The dry hot air returns to the cabinet from the air outlet. The wet hot air returned from the air return usually carries lint or other impurities. These lint or impurities entering the circulating air duct will affect the condensation efficiency of the condenser. Therefore, a filter screen is usually provided at the air return to filter the lint or impurities in the wet hot air.

[0003] However, after a long time of operation of the clothes care machine, a large amount of lint or impurities will accumulate at the filter screen, which will affect the air return and thus the performance of the clothes care machine if not cleaned in time. Currently, the performance of the clothes care machine is usually maintained by regular cleaning by the user. However, the amount of lint or impurities generated is usually affected by different materials, different care amounts, different use frequencies and other factors, which often makes it difficult to clean in time or requires frequent cleaning, which is time-consuming and labor-intensive, and the experience is poor.

[0004] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0005] The present application aims to solve the above technical problems, i.e. to solve the problem that the lint or impurities at the filter screen are not cleaned in time, which affects the performance of the clothes care machine, and the problem that frequent cleaning is time-consuming and labor-intensive.

[0006] In a first aspect, the present application provides a control method of a clothes processing device, the clothes processing device comprising a clothes holding cavity and an air duct, the air duct being in communication with the clothes holding cavity through an air return and an air outlet, a filter member being provided at the air return and being configured to filter impurities in air,

[0007] The clothes processing device further comprises a drying module, the drying module comprising a compressor, an evaporator and a condenser, the condenser and the evaporator being arranged in the air duct in sequence along the direction of air flow in the air duct,

[0008] The control method comprises:

[0009] acquiring a total drying value during the drying process while the laundry treating apparatus is operating the drying module;

[0010] acquiring a first refrigerant temperature at the compressor outlet, a second refrigerant temperature at the evaporator outlet, a first temperature at the air outlet, and a second temperature at the air return while or after the total drying value is greater than or equal to a drying threshold value;

[0011] acquiring a humidity inside the laundry containing cavity;

[0012] determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature, and / or the humidity.

[0013] In the preferred technical solutions of the above control method, the step of determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature, and / or the humidity further comprises:

[0014] calculating a first temperature difference of the first temperature and the second temperature;

[0015] determining whether the first temperature difference is greater than or equal to a first temperature threshold value;

[0016] selectively further determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, and / or the humidity based on the determination result.

[0017] In the preferred technical solutions of the above control method, the step of selectively further determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, and / or the humidity based on the determination result further comprises:

[0018] if the first temperature difference is greater than or equal to the first temperature threshold value, further calculating a second temperature difference of the first refrigerant temperature and the second refrigerant temperature;

[0019] acquiring a change coefficient of the humidity within a preset time period;

[0020] determining whether the filter member is clogged based on the second temperature difference and / or the change coefficient.

[0021] In the preferred technical solutions of the above control method, the step of determining whether the filter member is clogged based on the second temperature difference and / or the change coefficient further comprises:

[0022] If the second temperature difference is less than or equal to a second temperature threshold and / or the change coefficient is less than or equal to a coefficient threshold, it is determined that the filter member is blocked.

[0023] In the preferred technical solutions of the above control method, the step of "obtaining a change coefficient of the humidity in a preset time period" further comprises:

[0024] Obtaining an initial humidity and a current humidity in the clothes holding cavity in a preset time period;

[0025] Obtaining a length of the preset time period;

[0026] Calculating a humidity difference between the initial humidity and the current humidity;

[0027] Calculating a ratio of the humidity difference to the length to obtain the change coefficient.

[0028] In the preferred technical solutions of the above control method, the total drying value is determined based on the following steps:

[0029] Continuously obtaining a third temperature in the clothes holding cavity;

[0030] Determining a single drying value based on the third temperature;

[0031] Accumulating all single drying values in the drying process to obtain the total drying value.

[0032] In the preferred technical solutions of the above control method, the step of "determining a single drying value based on the third temperature" further comprises:

[0033] Judging a temperature interval in which each third temperature is located;

[0034] Obtaining a duration in each temperature interval in the drying process;

[0035] Determining a single drying value corresponding to each temperature interval based on the duration and a reference drying value per unit time in each temperature interval.

[0036] In the preferred technical solutions of the above control method, the control method further comprises:

[0037] When it is determined that the filter member is blocked, issuing a cleaning reminder.

[0038] In the technical scheme of the present application, the clothes processing device comprises a clothes containing cavity and an air duct, a fan is arranged in the air duct, under the action of the fan, the hot and humid air in the clothes containing cavity can enter the air duct through the return air inlet, and the dry and hot air in the air duct can return to the clothes containing cavity through the air outlet to dry the clothes. A filter member is arranged at the return air inlet, which can filter the lint and other sundries in the hot and humid air to prevent them from entering the air duct. The clothes processing device further comprises a drying module, which comprises a compressor, a condenser and an evaporator, the compressor, the condenser and the evaporator are connected by a refrigerant pipeline, the condenser and the evaporator are arranged in the air duct in sequence along the air flow direction, the condenser can exchange heat with the hot and humid air to cool it down, and the evaporator can increase the temperature of the air to provide dry and hot air for the clothes containing cavity. Through such a setting mode, the clothes placed in the clothes containing cavity can be dried.

[0039] The control method of the present application comprises: when the clothes processing device operates the drying module, obtaining the total drying value in the drying process, and simultaneously or after the total drying value is greater than or equal to the drying threshold value, obtaining the first refrigerant temperature at the compressor outlet, the second refrigerant temperature at the evaporator outlet, the first temperature at the air outlet, the second temperature at the return air inlet, and the humidity in the clothes containing cavity, and judging whether the filter member is blocked based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature and the humidity. That is, based on the control method of the present application, only the refrigerant temperature at the compressor and evaporator outlet, the air temperature at the air outlet and return air inlet, and the humidity in the clothes containing cavity need to be monitored to accurately determine whether the filter member is blocked. Users do not need to clean the filter screen regularly, but only need to clean it when it is determined to be blocked, which saves time and effort, and also ensures the performance of the clothes processing device, effectively improving the user experience.

[0040] Further, it is judged whether the first temperature difference between the first temperature and the second temperature is greater than or equal to a first temperature threshold value, if the first temperature difference is greater than or equal to the first temperature threshold value, it indicates that the temperature difference between the air outlet and the return air inlet is large, the return air is not very smooth, and the filter member may be blocked, at this time, it is judged whether the second temperature difference between the first refrigerant temperature and the second refrigerant temperature is less than or equal to a second temperature threshold value, whether the change coefficient of the humidity in the clothes containing cavity within a preset time period is less than or equal to a coefficient threshold value, and whether the filter member is blocked according to the judgment results. In this way, false judgments caused by excessive humidity of the clothes in the clothes containing cavity, abnormal evaporator and the like can be avoided, so that whether the filter member is blocked can be more accurately judged.

[0041] In a second aspect, the present application also provides a computer device comprising a memory and a processor, wherein the memory is adapted to store a plurality of program codes, and the program codes are adapted to be loaded and run by the processor to execute the control method according to any one of the preceding solutions.

[0042] It should be noted that the computer device has all the technical effects of the control method described above, which will not be repeated here.

[0043] In a third aspect, the present application also provides a laundry treatment device comprising a control module for executing the control method according to any one of the preceding solutions.

[0044] It should be noted that the laundry treatment device has all the technical effects of the control method described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0045] The preferred embodiments of the present application will be described below with reference to a laundry care machine as an example and in conjunction with the accompanying drawings, in which:

[0046] Figure 1 is a structural schematic diagram of a laundry care machine according to an embodiment of the present application (I);

[0047] Figure 2 is a structural schematic diagram of a laundry care machine according to an embodiment of the present application (II);

[0048] Figure 3 is a flowchart of a control method of a laundry care machine according to an embodiment of the present application;

[0049] Figure 4 is a flowchart of a method for determining whether the filter member is blocked according to an embodiment of the present application;

[0050] Figure 5 is a flowchart of a method for determining the change coefficient of the humidity within a preset time period according to an embodiment of the present application;

[0051] Figure 6 is a flowchart of a method for determining the total drying value according to an embodiment of the present application.

[0052] List of reference signs:

[0053] 1, cabinet; 2, clothes holding cavity; 3, clothes hanging rod; 4, clothes hanger; 5, air outlet; 6, air return; 7, filter screen; 8, drying module; 81, compressor; 82, condenser; 83, evaporator; 9, fan; 10, first temperature sensor; 11, second temperature sensor; 12, third temperature sensor; 13, fourth temperature sensor; 14, fifth temperature sensor; 15, circulating air duct; 16, humidity sensor. DETAILED DESCRIPTION

[0054] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the scope of protection of the present application. Although the present embodiment is described by taking a laundry care machine as an example, it is obviously also applicable to other laundry treatment devices having a drying module, such as a clothes dryer, a washer-dryer, etc.

[0055] It should be noted that, in the description of the present application, unless explicitly defined and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first" to "fifth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0056] At present, after the laundry care machine runs for a long time, the filter screen at the return air inlet of the laundry care machine will usually accumulate a lot of lint or impurities, which will affect the return air and in turn affect the performance of the laundry care machine if not cleaned in time. However, if cleaned regularly, it is time-consuming and laborious, and the experience is poor. Therefore, by monitoring the refrigerant temperature at the compressor and evaporator outlet, the air temperature at the air outlet and return air inlet, and the humidity in the clothes cavity, the present application can accurately determine whether the filter member is blocked, so that the user does not need to clean the filter screen regularly, but only needs to clean it when it is determined to be blocked.

[0057] As Figure 1 and Figure 2As shown, the clothes care machine comprises a cabinet 1, the cabinet 1 has a clothes containing cavity 2, a clothes hanging rod 3 is arranged at a position close to the top of the clothes containing cavity 2, the clothes hanging rod 3 is provided with a plurality of clothes hanging positions, clothes to be treated can be hung on each clothes hanging position through a clothes hanger 4. The clothes care machine is provided with a circulating air duct 15, an air outlet 5 of the circulating air duct 15 is arranged at the bottom of the clothes containing cavity 2, an air return port 6 is arranged at the top of the clothes containing cavity 2, a filter screen 7 as a filter member is arranged at the air return port 6, through the filter screen 7, lint or impurities carried in the hot and humid air can be filtered. The clothes care machine further comprises a drying module 8 and a fan 9, the fan 9 is arranged in the circulating air duct 15, the drying module 8 comprises a compressor 81, a condenser 82 and an evaporator 83, the compressor 81, the condenser 82 and the evaporator 83 are communicated with each other through refrigerant pipelines, refrigerant circulates among the compressor 81, the condenser 82 and the evaporator 83, the high-temperature and high-pressure gaseous refrigerant from the outlet of the compressor 81 first releases heat at the evaporator 83, then absorbs heat at the condenser 82, and then returns to the compressor 81. The condenser 82 and the evaporator 83 are arranged in sequence along the air flow direction in the circulating air duct 15. During the operation of the clothes care machine, the fan 9 sends the hot air in the circulating air duct 15 to the clothes containing cavity 2 through the air outlet 5, the hot air blows to the clothes to be treated in the clothes containing cavity 2, the moisture carried on the clothes to be treated enters the hot air, forming hot and humid air, the hot and humid air returns to the circulating air duct 15 through the air return port 6, first exchanges heat with the condenser 82 to reduce the temperature, the condensed water carried in the hot and humid air condenses, the dry and cold air after cooling exchanges heat with the evaporator 83 to increase the temperature, and then returns to the clothes containing cavity 2 through the air outlet 5.

[0058] Obviously, the filter member can also be a filter module composed of activated carbon, membrane separation material, nanometer material and the like which can filter out impurities in the air.

[0059] Continuing to refer to Figure 1 and Figure 2 , a first temperature sensor 10 is arranged at the outlet of the compressor 81, through the first temperature sensor 10, the temperature of the gaseous refrigerant from the compressor 81 can be detected. A second temperature sensor 11 is arranged at the outlet of the evaporator 83, through the second temperature sensor 11, the temperature of the refrigerant from the evaporator 83, that is, the temperature of the refrigerant after exchanging heat with the dry and cold air, can be detected. A third temperature sensor 12 is arranged at the air return port 6, through the third temperature sensor 12, the temperature of the hot and humid air from the clothes containing cavity 2 can be detected. A fourth temperature sensor 13 is arranged at the air outlet 5, through the fourth temperature sensor 13, the temperature of the dry and hot air entering the clothes containing cavity 2 through the air outlet 5 can be detected.

[0060] Obviously, the third temperature sensor 12 can also be arranged in the clothes holding cavity 2 or in the circulating air duct 15 close to the air return port 6, and the fourth temperature sensor 13 can also be arranged in the clothes holding cavity 2 or in the circulating air duct 15 close to the air outlet 5, as long as the temperature of the air entering the circulating air duct 15 from the clothes holding cavity 2 can be accurately detected by the third temperature sensor 12 and the temperature of the air entering the clothes holding cavity 2 from the circulating air duct 15 can be accurately detected by the fourth temperature sensor 13.

[0061] With reference to the accompanying drawings Figure 1 and Figure 2 , the clothes holding cavity 2 is further provided with a fifth temperature sensor 14 arranged close to the top of the clothes holding cavity 2, by which the temperature in the clothes holding cavity 2 can be obtained. Of course, the fifth temperature sensor 14 can not be arranged, and the temperature of the air detected by the third temperature sensor 12 can be taken as the temperature in the clothes holding cavity 2, because the hot air in the clothes holding cavity 2 flows from bottom to top, the air return port 6 is located at the top of the clothes holding cavity, and the clothes to be treated are also located at the upper part of the clothes holding cavity, so the temperature at the air return port 6 is similar to the temperature in the clothes holding cavity 2, which can also accurately reflect the treatment progress of the clothes to be treated.

[0062] It should be noted that the first temperature sensor 10, the second temperature sensor 11, the third temperature sensor 12, the fourth temperature sensor 13 and the fifth temperature sensor 14 can be, but are not limited to, thermocouples, thermal resistors, resistance temperature detectors, IC temperature sensors, etc.

[0063] As shown in Figure 1 and Figure 2 , the clothes holding cavity 2 is further provided with a humidity sensor 16 arranged in the clothes holding cavity 2 at a position substantially flush with the clothes to be treated, by which the humidity in the clothes holding cavity 2 can be detected in real time, and the humidity can reflect the humidity of the clothes to be treated in the clothes holding cavity 2. Obviously, the humidity sensor 16 can also be arranged at any other position in the clothes holding cavity 2, as long as the humidity in the clothes holding cavity 2 can be detected.

[0064] It should be noted that the humidity sensor 16 can be, but is not limited to, a lithium chloride humidity sensor, a carbon humidity sensing element, an alumina humidity meter, a ceramic humidity sensor, etc.

[0065] In this application, a time module is further arranged on the clothes care machine, by which the current time point can be obtained.

[0066] It should be noted that the clothes care machine can also not be configured with the time module, but be configured with a communication module, which is connected with the Internet in a communication mode of wide area network, local area network, WiFi, "WiFi+router accessing the Internet", Bluetooth, ZIGBEE, NFC, GPRS, etc., and when the current time point needs to be obtained, it can be directly obtained through the Internet. Of course, the communication module can also be connected with smart terminals containing a time module such as a smart phone, a smart watch, a smart bracelet, etc., and when the current time point needs to be obtained, the time point on each smart terminal can be directly obtained.

[0067] In the embodiment, the clothes care machine comprises a control module connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the fifth temperature sensor, the humidity sensor and the time module, which can determine whether the filter member is blocked based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature and the humidity when the total drying value is greater than or equal to the drying threshold, and can determine the single drying value based on the third temperature in the clothes cavity during the drying process, and further determine the total drying value of the drying process.

[0068] It should be noted that the control module can be a control chip that the clothes care machine itself has, or a controller specially used for executing the control method of the present application, or a functional module or functional unit of a general controller.

[0069] The possible implementation modes of the control method of the present application will be described below in combination with Figures 3 to 6

[0070] As shown in Figure 3 a possible implementation mode, the control method of the present application comprises:

[0071] S10: obtaining a total drying value in a drying process when the clothes care machine operates the drying module;

[0072] S11: obtaining a first refrigerant temperature at the outlet of the compressor, a second refrigerant temperature at the outlet of the evaporator, a first temperature at the air outlet and a second temperature at the air return when the total drying value is greater than or equal to a drying threshold;

[0073] S12: obtaining a humidity in the clothes cavity;

[0074] S13: determining whether the filter member is blocked based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature and the humidity;

[0075] S14: issuing a cleaning reminder.

[0076] ​In S10, when the clothes care machine starts to run the drying module, the total drying value in the drying process is accumulated. The specific determination method of the total drying value is described below, which is not repeated here.

[0077] In S11, when the total drying value obtained in S10 is equal to the drying threshold value, for example, the drying threshold value is 3000, and the total drying value reaches 3000, it means that the drying process has been carried out for a period of time, and the clothes in the clothes cavity have been dried in this process. Some lint or other impurities generated in the drying process have accumulated in the filter member along with the air. At this time, the first refrigerant temperature at the compressor outlet is obtained by the first temperature sensor, the second refrigerant temperature at the evaporator outlet is obtained by the second temperature sensor, the first temperature at the air outlet is obtained by the fourth temperature sensor, and the second temperature at the air return outlet is obtained by the third temperature sensor.

[0078] Obviously, the first refrigerant temperature, the second refrigerant temperature, the first temperature and the second temperature can also be obtained by the four temperature sensors after the total drying value in S10 is equal to the drying threshold value. Of course, the first refrigerant temperature, the second refrigerant temperature, the first temperature and the second temperature can also be obtained by the four temperature sensors at the same time or after the total drying value in S10 is greater than the drying threshold value.

[0079] In S12, the humidity in the clothes cavity is obtained by the humidity sensor.

[0080] It should be noted that although the above is described by executing S11 first and then executing S12, it is obvious that S12 can be executed first and then S11, or S11 and S12 can be executed simultaneously, which is not limited in this application.

[0081] In S13, based on the first refrigerant temperature, the second refrigerant temperature, the first temperature and the second temperature obtained in S11, and the humidity obtained in S12, it is determined whether the filter member is blocked.

[0082] In S14, when it is determined that the filter member is blocked, a cleaning reminder is sent. The user can clean it in time when receiving the reminder.

[0083] It should be noted that the reminder in S14 can be sent by text, voice, alarm or any combination of the above. The reminder can be sent through the display screen, playing component (such as speaker, loudspeaker, etc.) and other components on the clothes care machine, and can also be sent through the mobile terminal in communication connection with it, which can be one or any combination of remote controller, mobile phone, wearable device, smart home device and vehicle-mounted device.

[0084] Of course, when it is determined that the filter member is blocked, a cleaning reminder can also not be issued, in which case the user can be informed that the filter member is blocked by means of a pop-up prompt box, a prompt light flashing, etc. when the clothes care machine is next started to operate.

[0085] Through the above control method, by monitoring only the refrigerant temperature at the compressor and evaporator outlet, the air temperature at the air outlet and return air inlet, and the humidity in the clothes cavity, it can be accurately determined whether the filter member is blocked, and when it is determined that the filter member is blocked, a prompt is issued in a timely manner, so that the user can clean it in a timely manner, ensuring the performance of the clothes care machine, and saving time and effort without the need for regular cleaning.

[0086] It should be noted that the first refrigerant temperature and the second refrigerant temperature, or the first temperature and the second temperature, or the humidity, or the first refrigerant temperature, the second refrigerant temperature, the first temperature and the second temperature, or the first refrigerant temperature, the second refrigerant temperature and the humidity, or the first temperature, the second temperature and the humidity, or other parameter combinations can be used to determine whether the filter member is blocked.

[0087] In one possible implementation, when the total drying value is greater than or equal to the drying threshold value, whether the filter member is blocked is determined based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature and the humidity. The possible implementation of the present application for determining whether the filter member is blocked will be further described below in combination with Figure 4

[0088] As shown in Figure 4 In one possible implementation, the control method of the present application comprises:

[0089] S20: obtaining a first temperature at the air outlet and a second temperature at the return air inlet;

[0090] S21: calculating a first temperature difference between the first temperature and the second temperature;

[0091] S22: determining whether the first temperature difference is greater than or equal to a first temperature threshold value, if yes, executing S23, and if no, returning to execute S20;

[0092] S23: obtaining a first refrigerant temperature at the compressor outlet and a second refrigerant temperature at the evaporator outlet;

[0093] S24: calculating a second temperature difference between the first refrigerant temperature and the second refrigerant temperature;

[0094] S25: determining whether the second temperature difference is less than or equal to a second temperature threshold value, if yes, executing S26, and if no, returning to execute S23;​

[0095] S26: Obtain a change coefficient of the humidity within a preset time period.

[0096] S27: Determine whether the change coefficient is less than or equal to a coefficient threshold value. If yes, execute S28; if no, return to execute S26.

[0097] S28: Determine that the filter member is blocked.

[0098] In S20, the second temperature at the return air inlet and the first temperature at the air outlet are obtained by the third temperature sensor and the fourth temperature sensor, respectively, substantially similar to S11.

[0099] In S21, based on the first temperature and the second temperature obtained in S20, a first temperature difference between the two is calculated.

[0100] In S22, based on the first temperature difference obtained in S21, it is determined whether the first temperature difference is greater than or equal to a first temperature threshold value.

[0101] If the first temperature difference is less than the first temperature threshold value, for example, the first temperature difference is 5°C and the first temperature threshold value is 10°C, it indicates that the temperature at the air outlet and the temperature at the return air inlet are not much different, the return air is relatively smooth, and the filter member is not blocked. At this time, the temperature at the air outlet and the temperature at the return air inlet are further monitored, that is, S20 is returned to be executed.

[0102] If the first temperature difference is greater than or equal to the first temperature threshold value, for example, the first temperature difference is 15°C and the first temperature threshold value is 10°C, it indicates that the temperature at the air outlet and the temperature of the air at the return air inlet are relatively large, and there may be a problem of poor return air. At this time, the first refrigerant temperature at the compressor outlet and the second refrigerant temperature at the evaporator outlet are further obtained by the first temperature sensor and the second temperature sensor, that is, S23 is executed.

[0103] In S24, based on the first refrigerant temperature and the second refrigerant temperature obtained in S23, a second temperature difference between the two is calculated.

[0104] In S25, based on the second temperature difference obtained in S24, it is determined whether the second temperature difference is less than or equal to a second temperature threshold value.

[0105] It should be noted that, S23 can be performed before S20, or S23 and S20 can be performed simultaneously. S21 and S24 can be performed simultaneously, or S24 can be performed before S21. S22 and S25 can be performed simultaneously, or S25 can be performed before S22. That is, S23 to S25 can be performed before S20 to S22, or S20 to S22 and S23 to S25 can be performed simultaneously.

[0106] If the second temperature difference is greater than the second temperature threshold, for example, the second temperature difference is 15℃ and the second temperature threshold is 10℃, it indicates that the temperature difference between the refrigerant temperatures at the compressor outlet and the evaporator outlet is large, which means that the heat output of the evaporator is large, the air volume exchanged with the evaporator in the circulating air duct is large, and the air volume entering the circulating air duct is not much different from the normal air volume. The return air is smooth, and no blockage occurs at the filtering member. At this time, the refrigerant temperatures at the compressor outlet and the evaporator outlet are further monitored, that is, S23 is returned to.

[0107] If the second temperature difference is less than or equal to the second temperature threshold, for example, the second temperature difference is 6℃ and the second temperature threshold is 10℃, it indicates that the temperature difference between the refrigerant temperatures at the compressor outlet and the evaporator outlet is small, which means that the heat output of the evaporator is small, the air volume exchanged with the evaporator is small, and the air volume in the circulating air duct is small. There may be a problem of poor return air. At this time, the change coefficient of the humidity in the preset time period is further obtained, that is, S26 is performed. It should be noted that the specific process of obtaining the change coefficient is described below and will not be repeated here.

[0108] In S27, based on the change coefficient obtained in S26, it is determined whether the change coefficient is less than or equal to a coefficient threshold.

[0109] It should be noted that, S26 can be performed before S20 and S23, or S20, S23, and S26 can be performed simultaneously. S22, S25, and S27 can be performed simultaneously, or S27 can be performed before S22 and S25. That is, S26 and S27 can be performed before S20 to S22, S23 to S25, or S26 and S27, S23 to S25, S20 to S22 can be performed simultaneously.

[0110] If the change coefficient is greater than the coefficient threshold value, for example, the change coefficient is 1.2, and the coefficient threshold value is 0.8, it indicates that the humidity in the clothes holding cavity changes greatly in the preset period, that is, the humidity of the clothes to be treated changes greatly, and it is in the early stage of drying. In this process, the clothes to be treated need to absorb more heat in order to evaporate the water carried thereon. The amount of dry and cold air obtained after the humid and hot air in the circulating air duct is condensed by the condenser is reduced. Therefore, it can be seen that the first temperature difference greater than or equal to the first temperature threshold value and the second temperature difference less than or equal to the second temperature threshold value are not caused by poor return air, but by the fact that the clothes to be treated are in the early stage of drying and have a large humidity. At this time, the humidity change coefficient in the preset period is continuously monitored, that is, the execution of S26 is returned.

[0111] If the change coefficient is less than or equal to the coefficient threshold value, for example, the change coefficient is 0.5, and the coefficient threshold value is 0.8, it indicates that the humidity in the clothes holding cavity changes little in the preset period, that is, the humidity of the clothes to be treated changes little. At this time, it is in the late stage of drying, and more lint and other impurities are generated in the process. At this time, the first temperature difference and the second temperature difference are both large, which can determine that the filter member is blocked, that is, S28 is executed.

[0112] Through the above control mode, it can be more accurately judged whether the filter member is blocked, and the performance of the clothes care machine can be better ensured.

[0113] It should be noted that when the first temperature difference is greater than or equal to the first temperature threshold value, whether the filter member is blocked can not be further judged based on the size of the second temperature difference, but is directly judged according to the change coefficient of the humidity in the preset period. That is, when the result of the judgment in S22 is yes, S23 is not executed, but S26 is directly executed. Of course, when the second temperature difference is less than or equal to the second temperature threshold value, whether the filter member is blocked can not be further judged according to the change coefficient of the humidity in the preset period, but it is directly determined that the filter member is blocked. That is, when the result of the judgment in S25 is yes, S26 is not executed, but S27 is directly executed.

[0114] In a preferred embodiment, when the first temperature difference is greater than or equal to the first temperature threshold value, it is directly determined that the filter member is blocked when the second temperature difference is less than or equal to the second temperature threshold value, or it is directly determined that the filter member is blocked when the change coefficient of the humidity in the preset period is less than or equal to the coefficient threshold value.

[0115] In a possible implementation, the humidity change of the clothes to be treated can accurately reflect the running stage of the clothes care machine. The possible implementation of the change coefficient of the humidity in the preset time period is described below in combination with Figure 5

[0116] As shown in Figure 5 , in a possible implementation, the control method of the present application further comprises:

[0117] S30: obtaining the initial humidity in the clothes holding cavity and the initial time point corresponding to the initial humidity;

[0118] S31: obtaining the current humidity in the clothes holding cavity and the current time point corresponding to the current humidity;

[0119] S32: calculating the humidity difference between the initial humidity and the current humidity;

[0120] S33: calculating the time difference between the current time point and the initial time point;

[0121] S34: calculating the ratio of the humidity difference and the time difference.

[0122] In S30, at the beginning of the clothes care machine running the drying module, the initial humidity in the clothes holding cavity is obtained by the humidity sensor, and at the same time, the initial time point corresponding to the initial humidity is obtained by the time module.

[0123] In S31, when the total drying value is greater than or equal to the drying threshold value, the current humidity in the clothes holding cavity is obtained by the humidity sensor, and at the same time, the current time point corresponding to the current humidity is obtained by the time module.

[0124] It should be noted that the initial humidity and the current humidity can also be the humidity at the beginning and the end of any preset time period during the process of the clothes care machine running the drying module, as long as the change coefficient of the humidity in the preset time period can be determined by the humidity at the two time points.

[0125] In S32, based on the initial humidity and the current humidity obtained in S30 and S31, the humidity difference between the initial humidity and the current humidity is calculated. For example, the initial humidity is 90%, the current humidity is 85%, and the humidity difference is 5.

[0126] In S33, based on the initial time point and the current time point obtained in S30 and S31, the time difference between the initial time point and the current time point is calculated to obtain the specific length of the preset time period. For example, the initial time point is 10:08, the current time point is 10:18, and the time difference is 10 minutes.

[0127] ​Of course, the time length since the last drying can also be taken as the initial time point and the current time point to calculate the time length of the preset time period. For example, the initial time point is 2 minutes since the start of drying, and the current time point is 12 minutes since the start of drying. Then, the time length of the preset time period can be determined as 10 minutes, etc. Without departing from the basic principles of the present application, those skilled in the art can flexibly select the specific manner of determining the time length of the preset time period according to the specific application scenario, as long as the specific time length of the preset time period corresponding to the initial humidity and the current humidity can be accurately determined.

[0128] It should be noted that although the above is described by taking the execution of S32 first and then the execution of S33 as an example, it is obvious that S33 can be executed first and then S32, or S32 and S33 can be executed at the same time, and the present application does not make any limitation.

[0129] In S34, based on the humidity difference obtained in S32 and the time difference obtained in S33, the ratio of the humidity difference to the time difference is calculated, which is the change coefficient. For example, the humidity difference is 5, the time difference is 10 minutes, and the change coefficient is 5 / 10=0.5.

[0130] In the above manner, the change coefficient of the humidity in the preset time period can be accurately calculated, and the change coefficient can accurately reflect the humidity change in the preset time period in the clothes holding cavity, and then the drying stage of the clothes to be treated can be evaluated.

[0131] In one possible implementation, the total drying value is determined based on the temperature in the clothes holding cavity during the drying process and the duration at each temperature, and the total drying value can reflect the actual drying progress. The possible implementation of determining the total drying value in the present application will be described below in combination with Figure 6

[0132] As shown in Figure 6 In one possible implementation, the control method of the present application further includes:

[0133] S40: obtaining all third temperatures in the clothes holding cavity during the last drying process;

[0134] S41: judging the temperature interval of each third temperature;

[0135] S42: obtaining the duration in each temperature interval during the last drying process;

[0136] S43: determining a single drying value corresponding to each temperature interval based on the duration and the reference drying value per unit time in each temperature interval;

[0137] S44: accumulating all single drying values corresponding to each temperature interval.

[0138] ​In S40, the third temperature in the clothes cavity is continuously obtained by the fifth temperature sensor, i.e., all the third temperatures are obtained.

[0139] In S41, the temperature interval in which the third temperature in S40 is located is determined. For example, the temperature interval between 0°C and 100°C can be divided into two temperature intervals, i.e., 0°C-60°C and 60°C-100°C. Of course, the temperature interval can also be divided into three, four, five, six or more, which is not limited in the embodiment.

[0140] In S42, the duration of each temperature interval in the drying process is obtained.

[0141] In S43, the single drying value corresponding to each temperature interval is determined based on the duration in S42 and the reference drying value corresponding to the unit time in each temperature interval.

[0142] The reference drying values corresponding to each temperature interval can be the same or different. For example, the reference drying value corresponding to the unit time in the 0°C-60°C interval is 1, and the reference drying value corresponding to the unit time in the 60°C-100°C interval is 2, etc. When determining the single drying value, taking 1 second as the unit time, if the duration in the 0°C-60°C interval is 3 seconds, then the single drying value corresponding to the 0°C-60°C interval in the drying process is 3.

[0143] Of course, the temperature interval in which the third temperature is located can not be determined first, but the third temperature and the duration at the third temperature can be directly used to determine the single drying value. In this case, the unit time corresponding to each temperature has a corresponding reference drying value, which can be the same or different. When determining the single drying value, the reference drying value corresponding to the unit time at the third temperature is called, and the single drying value corresponding to the third temperature is determined by multiplying the actual duration by the reference drying value.

[0144] Obviously, the unit time can also be 0.5 seconds, 1.5 seconds, 2 seconds or other lengths, and the application does not limit the specific value of the unit time corresponding to the reference drying value.

[0145] Without deviating from the basic principles of the application, those skilled in the art can also flexibly select the specific determination method of the single drying value according to the specific application scene, as long as the corresponding single drying value can be determined based on the third temperature and the duration at the third temperature.

[0146] In S43, the single drying values corresponding to each temperature interval in the drying process are added, and the sum obtained is the total drying value.

[0147] For example, in the drying process, the time interval of 0℃-60℃ is 0-100 seconds, the time interval of 60℃-70℃ is 100-280 seconds, and the reference drying value corresponding to 1 second in the interval of 0℃-60℃ is 1, and the reference drying value corresponding to 1 second in the interval of 60℃-100℃ is 2. In this drying process, the single drying value corresponding to the interval of 0℃-60℃ is 100*1=100, and the single drying value corresponding to the interval of 60℃-100℃ is (280-100)*2=360. The total drying value is 100+360=460.

[0148] In the above manner, the total drying value of the current drying process from the beginning can be accurately determined, and the actual drying process and the drying condition of the clothes can be reflected based on the total drying value.

[0149] It should be noted that the specific values of the above-mentioned drying threshold value, total drying value, single drying value, reference drying value, first temperature difference, second temperature difference, first temperature threshold value, second temperature threshold value, change coefficient, coefficient threshold value, humidity value, time difference, temperature interval, and the like are only exemplary and are not limiting. Without deviating from the basic principles of the present application, those skilled in the art can flexibly select the specific values of the aforementioned parameters according to the specific application scenarios, as long as the actual clogging degree can be accurately determined based on these parameters.

[0150] In summary, in the preferred technical solution of the present application, when the clothes care machine is running the drying module, the total drying value is monitored. When the total drying value is greater than or equal to the drying threshold value, the refrigerant temperature at the compressor and evaporator outlet, the air temperature at the air outlet and return air inlet, and the humidity in the clothes cavity are monitored. Based on the refrigerant temperature, the temperature of the air entering and exiting the clothes cavity, and the humidity in the clothes cavity, it can be accurately determined whether the filter member is clogged. The user only needs to clean when the clogging is determined to ensure the performance of the clothes care machine, without the need for regular cleaning, saving time and effort. By determining whether the first temperature difference between the first temperature and the second temperature is greater than or equal to the first temperature threshold value, and further determining whether the second temperature difference between the first refrigerant temperature and the second refrigerant temperature is less than or equal to the second temperature threshold value when the first temperature difference is greater than or equal to the first temperature threshold value, and whether the change coefficient of the humidity in the clothes cavity within a predetermined time period is less than or equal to the coefficient threshold value, it can be determined whether the filter member is clogged, thereby accurately determining whether the filter member is clogged, and avoiding false judgments caused by excessive humidity of the clothes in the clothes cavity, evaporator abnormalities, and the like.

[0151] In addition, the present application further provides a computer device, comprising a memory and a processor, the memory is suitable for storing a plurality of program codes, the program codes are suitable for being loaded and run by the processor to execute the control method of any one of the preceding schemes.

[0152] It should be noted that the computer device has all the technical effects of the control method described above, which will not be repeated here.

[0153] In addition, the present application further provides a laundry processing device, comprising a control module, the control module is used to execute the control method of any one of the preceding schemes.

[0154] It should be noted that the laundry processing device has all the technical effects of the control method described above, which will not be repeated here.

[0155] Although the steps in the above embodiments are described in the above-mentioned order, those skilled in the art can understand that, in order to achieve the effects of the embodiments, the different steps do not have to be executed in such an order, and can be executed simultaneously (in parallel) or in a reversed order, and these simple changes are within the protection scope of the present application.

[0156] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A control method of a laundry treating apparatus, characterized by, The laundry treating apparatus includes a laundry holding cavity and an air duct, the air duct being in communication with the laundry holding cavity through an air return opening and an air outlet opening, the air return opening being provided with a filter member configured to filter foreign matter in air, and the laundry treating apparatus further includes a drying module including a compressor, an evaporator, and a condenser, the condenser and the evaporator being disposed in the air duct in sequence along an air flow direction in the air duct, The control method includes: acquiring a total drying value during a drying process when the laundry treating apparatus operates the drying module; acquiring a first refrigerant temperature at the compressor outlet, a second refrigerant temperature at the evaporator outlet, a first temperature at the air outlet opening, and a second temperature at the air return opening, while or after the total drying value is greater than or equal to a drying threshold value; acquiring humidity in the laundry holding cavity; determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature, and / or the humidity.

2. The control method according to claim 1, characterized by, The step of "determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, the first temperature, the second temperature, and / or the humidity" further includes: calculating a first temperature difference between the first temperature and the second temperature; determining whether the first temperature difference is greater than or equal to a first temperature threshold value; selectively further determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, and / or the humidity based on the determination result.

3. The control method according to claim 2, characterized by, The step of "selectively further determining whether the filter member is clogged based on the first refrigerant temperature, the second refrigerant temperature, and / or the humidity based on the determination result" further includes: if the first temperature difference is greater than or equal to the first temperature threshold value, further calculating a second temperature difference between the first refrigerant temperature and the second refrigerant temperature; acquiring a change coefficient of the humidity within a preset time period; determining whether the filter member is clogged based on the second temperature difference and / or the change coefficient.

4. The control method according to claim 3, characterized by The step of "determining whether the filter member is clogged based on the second temperature difference and / or the change coefficient" further includes: if the second temperature difference is less than or equal to a second temperature threshold value and / or the change coefficient is less than or equal to a coefficient threshold value, it is determined that the filter member is clogged.

5. The control method according to claim 3, characterized by, The further includes of "acquiring a change coefficient of the humidity within a preset time period" further includes: acquiring an initial humidity and a current humidity within a preset time period in the laundry holding cavity; acquiring a length of the preset time period; calculating a humidity difference between the initial humidity and the current humidity; calculating a ratio of the humidity difference to the length to obtain the change coefficient.

6. The control method according to claim 1, characterized by The total drying value is determined based on the following steps: continuously acquiring a third temperature in the laundry holding cavity; determining a single drying value based on the third temperature; accumulating all single drying values in the drying process to obtain the total drying value.

7. The control method according to claim 6, characterized by, The step of "determining a single drying value based on the third temperature" further includes: determining a temperature interval in which each third temperature is located; acquiring a duration in each temperature interval during the drying process; determining a single drying value corresponding to each temperature interval based on the duration and a reference drying value per unit time in each temperature interval.

8. The control method according to claim 1, characterized by, The control method further comprises: issuing a cleaning reminder when it is determined that the filter member is blocked.

9. A computer device comprising a memory and a processor, the memory being adapted to store a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by the processor to execute the control method of any one of claims 1 to 8. 10.A laundry treating apparatus, characterized by, The laundry treatment apparatus comprises a control module for executing the control method of any one of claims 1 to 8.

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