Clothes drying equipment and control method thereof

Abstract

The invention relates to the technical field of clothes treatment, in particular to clothes drying equipment and a control method thereof, and solves the problem that existing clothes drying equipment is poor in drying effect. The clothes drying equipment provided by the invention comprises a barrel body and an air duct assembly communicated with the barrel body, the air duct assembly is provided with an air duct, the air duct is provided with a first air supply outlet and a second air supply outlet which communicate with the barrel, the first air supply outlet is higher than the second air supply outlet, and the first air supply outlet is located on the downstream side of the second air supply outlet in the airflow direction of the air duct; an adjusting component is further arranged in the air duct and used for adjusting the air volume ratio of the first air supply outlet to the second air supply outlet. In the clothes drying process, the air volume ratio of the first air supply outlet to the second air supply outlet can be dynamically adjusted according to the actual drying scene, and therefore wrinkles of clothes are effectively reduced while the basic drying function is guaranteed.

Description

TECHNICAL FIELD

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

[0002] The common clothes drying device in the market has a relatively simple air duct design, and usually adopts a single air outlet to send air to a clothes treatment cavity. This design makes the flow path and distribution of air in the clothes treatment cavity relatively fixed, and cannot be flexibly adjusted according to different states of clothes in the drying process, directly affecting the drying effect and drying efficiency of the clothes. Moreover, due to the limitation of the air duct design and air sending control, part of the heat and air energy will be lost in the transmission process, and cannot fully act on the clothes, resulting in low energy utilization efficiency. In addition, the single air outlet air sending mode makes the clothes unevenly stressed in the drying process, and the clothes are prone to wrinkles, affecting the flatness of the clothes and the comfort during wearing. SUMMARY

[0003] The present application aims to solve the above technical problems, that is, at least one of the problems of high energy consumption and poor drying effect of the existing clothes drying device.

[0004] In a first aspect, the present application provides a clothes drying device, comprising a drum and an air duct assembly in communication with the drum.

[0005] The air duct assembly is configured with an air duct having a first air outlet and a second air outlet in communication with the drum respectively, the height of the first air outlet is higher than that of the second air outlet, and the first air outlet is located on the downstream side of the second air outlet in the airflow direction of the air duct.

[0006] The air duct is further provided with an adjusting member for adjusting the air volume ratio of the first air outlet and the second air outlet.

[0007] In some possible embodiments of the above clothes drying device, the adjusting member comprises a flow blocking member matched with the cross-sectional dimension of the air duct, and the flow blocking member is rotatably installed in the air duct and located on the downstream side of the second air outlet.

[0008] In some possible embodiments of the above clothes drying device, a flow guide plate is arranged in the air duct; and / or

[0009] The first air outlet is located at a position close to the top of the back wall of the drum, and the second air outlet is located at a position close to the bottom of the back wall of the drum.

[0010] In a second aspect, the present application also provides a control method of a clothes drying device, the clothes drying device being the clothes drying device according to any one of the preceding technical solutions, and the control method comprising:

[0011] obtaining a characteristic parameter of the clothes to be dried;

[0012] determining a drying program and parameter thresholds of each drying sub-stage corresponding to the drying program based on the characteristic parameter;

[0013] obtaining a drying parameter of the clothes to be dried during the drying process;

[0014] comparing the drying parameter with the parameter thresholds of each drying sub-stage to determine a current drying sub-stage;

[0015] adjusting an opening degree of the adjusting member when it is determined that each drying sub-stage is entered, so that an air volume ratio of the first air outlet and the second air outlet corresponds to the current drying sub-stage.

[0016] In some possible implementation manners of the control method of the clothes drying device, the drying sub-stages include sequentially arranged a temperature rising stage, a constant speed stage, a temperature decreasing stage and a cold air stage, and the adjusting the opening degree of the adjusting member when it is determined that each drying sub-stage is entered includes:

[0017] when it is determined that the temperature rising stage is entered, the opening degree of the adjusting member is a first preset opening degree value;

[0018] when it is determined that the constant speed stage is entered, the opening degree of the adjusting member is a second preset opening degree value;

[0019] when it is determined that the temperature decreasing stage is entered, the opening degree of the adjusting member is a third preset opening degree value;

[0020] when it is determined that the cold air stage is entered, the opening degree of the adjusting member is a fourth preset opening degree value;

[0021] wherein the third preset opening degree value is smaller than the second preset opening degree value, and larger than the first preset opening degree value and the fourth preset opening degree value.

[0022] In some possible implementation manners of the control method of the clothes drying device, the first preset opening degree value and the fourth preset opening degree value are 0% to 10% of a full opening state;

[0023] the second preset opening degree value is 90% to 100% of the full opening state;

[0024] the third preset opening degree value is 45% to 55% of the full opening state.

[0025] In some possible implementation of the control method of the clothes drying device, the drying parameter comprises a current temperature of the clothes to be dried, and the comparison of the drying parameter with the parameter threshold of each drying sub-stage to determine the current drying sub-stage comprises: comparing the current temperature of the clothes to be dried with preset temperature thresholds of each drying sub-stage to determine the current drying sub-stage.

[0026] When it is determined that the current temperature of the clothes to be dried is less than or equal to the first preset temperature threshold, it is determined that the clothes to be dried enter the temperature rising stage.

[0027] When it is determined that the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, and the duration that the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than the second preset temperature threshold is greater than a first preset duration, it is determined that the clothes to be dried enter the constant-speed stage.

[0028] When it is determined that the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than or equal to a third preset temperature threshold, and the duration that the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than the third preset temperature threshold is greater than a second preset duration, it is determined that the clothes to be dried enter the speed reduction stage.

[0029] When it is determined that the current temperature of the clothes to be dried is greater than the third preset temperature threshold, and the duration that the current temperature of the clothes to be dried is greater than the third preset temperature threshold is greater than a third preset duration, it is determined that the clothes to be dried enter the cold wind stage.

[0030] The first preset temperature threshold, the second preset temperature threshold and the third preset temperature threshold increase sequentially, the first preset temperature threshold is less than a highest temperature corresponding to the temperature rising stage, the second preset temperature threshold is greater than a highest temperature corresponding to the constant-speed stage, and the third preset temperature threshold is less than a highest temperature of the speed reduction stage.

[0031] In some possible implementation of the control method of the clothes drying device, the drying parameter comprises a current temperature of the clothes to be dried and a current moisture content, and the clothes drying device further comprises a heating member and an air blower, and the control method further comprises:

[0032] When it is determined that the clothes to be dried enter the temperature rising stage, the heating member and the air blower are started, and the power of the heating member is adjusted based on the current temperature.

[0033] When it is determined that the clothes to be dried enter the constant-speed stage, the rotating speed of the air blower is adjusted based on the current moisture content.

[0034] adjust the rotating speed of the fan based on the current moisture content when it is judged that the deceleration stage is entered;

[0035] turn off the heating member when it is judged that the cold air stage is entered.

[0036] In some possible implementation manners of the control method of the clothes drying apparatus, the characteristic parameter includes an initial weight and an initial moisture content, the parameter threshold includes a target drying time, and the determining of the drying program and the parameter threshold of each drying sub-stage corresponding to the drying program based on the characteristic parameter includes:

[0037] determining a total time of the entire drying process based on the initial weight and the initial moisture content;

[0038] determining a time proportion value of each drying sub-stage based on the initial moisture content;

[0039] determining a target drying time of each drying sub-stage based on the total time and the time proportion value.

[0040] In some possible implementation manners of the control method of the clothes drying apparatus, the determining of the time proportion of each drying sub-stage based on the initial moisture content includes:

[0041] comparing the initial moisture content with a first preset moisture content threshold and a second preset moisture content threshold respectively, wherein the first preset moisture content threshold is less than the second preset moisture content threshold;

[0042] if the initial moisture content is greater than or equal to the first preset moisture content threshold and less than or equal to the second preset moisture content threshold, setting the time proportion value of each drying sub-stage as a preset time proportion value;

[0043] if the initial moisture content is less than the first preset moisture content threshold, increasing the time proportion values of the temperature rising stage and the cold air stage and decreasing the time proportion values of the constant speed stage and the deceleration stage based on the preset time proportion value;

[0044] if the initial moisture content is greater than the second preset moisture content threshold, decreasing the time proportion values of the temperature rising stage and the cold air stage and increasing the time proportion values of the constant speed stage and the deceleration stage based on the preset time proportion value.

[0045] The present application has the following advantages:

[0046] The clothes drying device provided by the application can dynamically adjust the air volume ratio of the first air outlet and the second air outlet according to the actual drying scene in the clothes drying process, so as to effectively reduce the wrinkle generation of clothes while ensuring the basic drying function, and can strengthen the hot air penetration of the local area in the partial drying stage, realize the performance optimization from rapid drying to fine care, and finally achieve the synergistic optimization of efficiency, energy consumption and care.

[0047] Specifically, by acquiring the characteristic parameters of the clothes to be dried, the drying program and the parameter threshold of each sub-stage are customized and matched, the accurate stage-by-stage control of the drying process is realized, and specifically, the drying parameters are monitored in real time during the drying process, the current drying sub-stage is judged, the opening degree of the adjusting member in the air duct is dynamically adjusted, and the air volume ratio of the first air outlet and the second air outlet is adapted to the requirements of different drying sub-stages. Among them, in the initial stage, the air volume of the second air outlet for bottom air inlet can be increased to make the hot air fully contact with the clothes to be dried and improve the contact time of the clothes to be dried and the hot air, thereby improving the energy utilization rate. In the middle stage, the air volume of the first air outlet for top air inlet can be increased to facilitate the hot air to quickly take away the high humidity airflow. In the later stage, the air flow distribution can be optimized by adjusting the air volume ratio, so as to improve the drying efficiency while ensuring uniform drying of the clothes. Not only the problem that the clothes are prone to wrinkles caused by the single air outlet of the traditional clothes dryer is solved, but also the energy consumption is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0048] The preferred embodiments of the application will be described below with reference to the accompanying drawings, in which:

[0049] Figure 1 The structure schematic view of the first air duct shell and the air outlet cover of the clothes drying device provided by the embodiment of the application when connected;

[0050] Figure 2 The structure schematic view of the second air duct shell of the clothes drying device provided by the embodiment of the application;

[0051] Figure 3 The plane schematic view of the second air duct shell of the clothes drying device provided by the embodiment of the application when the adjusting member is in the closed state, wherein the projection of the first air outlet and the second air outlet on the second air duct shell is shown;

[0052] Figure 4 The three-dimensional structure schematic view of the second air duct shell of the clothes drying device provided by the embodiment of the application when the adjusting member is in the closed state;

[0053] Figure 5A plan view of the second air duct shell of the clothes drying apparatus according to the embodiment of the present application when the adjusting member is in the fully open state, wherein the projections of the first air outlet and the second air outlet on the second air duct shell are shown;

[0054] Figure 6 A perspective view of the second air duct shell of the clothes drying apparatus according to the embodiment of the present application when the adjusting member is in the fully open state;

[0055] Figure 7 A schematic view of the changes of the moisture content and the temperature of the clothes in each drying sub-stage during the drying process.

[0056] 1, first air duct shell; 11, first air outlet; 12, second air outlet; 2, second air duct shell; 21, adjusting member; 22, deflector; 3, air supply cover. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions. In order to better illustrate the present application, numerous specific details are given in the following detailed description. Those skilled in the art should understand that the present application can also be implemented without certain specific details.

[0058] In the description of the present application, the terms indicating the direction or positional relationship such as "upper", "lower", "inner", "outer", "left", "right", "front", "back" and the like are based on the direction or positional relationship in the actual application, which is only for the convenience of description, and does not indicate or imply that the device to be protected must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the ordinal numbers such as "first", "second" are only for the convenience of description, and are not used to indicate or imply relative importance.

[0059] In addition, it should be further pointed out that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. 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.

[0060] Please refer to Figures 1 to 6This invention provides a clothes drying device, which includes a drum (not shown in the figure) and an air duct assembly connected to the drum. The air duct assembly includes an outer shell and an air supply hood 3. The outer shell includes a first air duct shell 1 and a second air duct shell 2 that are detachably connected. Specifically, the first air duct shell 1 and the second air duct shell 2 are two complementary half-shell structures that can be spliced ​​together. The first air duct shell 1 and the second air duct shell 2 are spliced ​​together and enclosed to form an air duct. The air supply hood 3 is used to connect the clothes processing chamber of the drum and the air duct inside the outer shell.

[0061] like Figure 1 As shown, the first air duct shell 1 is provided with a first air outlet 11 and a second air outlet 12 that are respectively connected to the air supply hood 3. That is, the air duct has a first air outlet 11 and a second air outlet 12 that are respectively connected to the cylinder body. The height of the first air outlet 11 is higher than the height of the second air outlet 12. In the airflow direction of the air duct, the first air outlet 11 is located downstream of the second air outlet 12. This arrangement allows some gas to enter the cylinder body first from the second air outlet 12 during the gas flow in the air duct, while some gas bypasses the second air outlet 12 and directly enters the cylinder body from the first air outlet 11.

[0062] Specifically, in this embodiment, the first air outlet 11 is located near the top of the back wall of the drum, and the second air outlet 12 is located near the bottom of the back wall of the drum. This arrangement allows some gas to flow into the clothes processing chamber of the drum from the bottom through the second air outlet 12 when the gas flows along the air duct, while some gas flows into the clothes processing chamber from the top of the drum through the first air outlet 11. This satisfies the requirement of air entering from different positions (near the top of the drum and near the bottom of the drum) during the drying of clothes.

[0063] An adjusting component 21 is also provided inside the air duct, which is used to adjust the air volume ratio between the first air outlet 11 and the second air outlet 12. The adjusting component 21 is rotatably mounted on either the first air duct shell 1 or the second air duct shell 2. Preferably, as shown in the image... Figure 2 As shown, the adjusting component 21 is rotatably mounted on the second air duct shell 2, which allows the adjusting component 21 to move synchronously with the disassembly and installation process of the second air duct shell 2, thereby enabling quick disassembly and assembly operations in equipment maintenance scenarios, which is beneficial to improving the convenience and operability of maintenance and replacement of the adjusting component 21.

[0064] Specifically, please refer to Figures 3 to 6, the adjusting member 21 comprises a flow blocking member which is adapted to the cross-sectional size of the air duct, and is rotatably installed in the air duct and located at the downstream side of the second air outlet 12, that is, the flow blocking member controls the air volume of the first air outlet 11 by adjusting the cross section of the air duct, when the flow blocking member reduces the ventilation cross section, thereby reducing the air volume of the first air outlet 11, so that part of the airflow is diverted from the second air outlet 12 into the cylinder, thereby achieving the adjusting purpose of the air volume ratio of the first air outlet 11 and the second air outlet 12.

[0065] In an embodiment, the flow blocking member is rotatably connected with the second air duct shell 2 through a rotating shaft, and the rotating shaft extends outside the second air duct shell 2 and is connected with the driving motor. Specifically, as shown in Figure 3 and Figure 4 , under the driving action of the driving motor, the flow blocking member is parallel to the cross section of the second air duct shell 2, at this time the flow blocking member intercepts almost all the gas flowing to the first air outlet 11, and the airflow in the air duct flows from the second air outlet 12 into the cylinder, that is, at this time the adjusting member 21 is in the closed state, and the opening degree value is 0%. As shown in Figure 5 and Figure 6 , under the driving action of the driving motor, the flow blocking member is almost perpendicular to the cross section of the second air duct shell 2, that is, almost parallel to the inner surface of the flow blocking member, at this time the flow blocking member no longer blocks the gas flowing to the first air outlet 11, and part of the gas in the air duct flows from the second air outlet 12 into the cylinder, and another part of the gas flows from the first air outlet 11 into the cylinder after passing through the second air outlet 12, that is, at this time the adjusting member 21 is in the fully open state, and the opening degree value is 100%. In addition, according to the real-time running condition of the drying operation, the rotating shaft and the flow blocking member can be controlled to rotate at a more specific rotating angle by the driving motor, so as to adjust the opening degree of the adjusting member 21, and further adjust the air volume ratio of the first air outlet 11 and the second air outlet 12. For example, the included angle between the flow blocking member and the cross section of the second air duct shell 2 is 45°, at this time the flow blocking member intercepts part of the gas flowing to the first air outlet 11, most of the gas in the air duct flows from the second air outlet 12 into the cylinder, and a small part of the gas directly flows from the first air outlet 11 into the cylinder after passing through the second air outlet 12, wherein the smaller the included angle between the flow blocking member and the cross section of the second air duct shell 2, the better the wind blocking effect of the flow blocking member on the first air outlet 11.

[0066] Further, as shown in Figures 2 to 6 , a flow guide plate 22 is arranged in the air duct, and the flow guide plate 22 can be fixedly arranged on the first air duct shell 1 or the second air duct shell 2. The flow guide plate 22 can be distributed in the area where the first air outlet 11 and the second air outlet 12 are located, and the flow guide plate 22 is beneficial to reduce the vortex generated when the airflow flows in the air duct, and effectively avoid the problems of energy loss and noise increase caused by the vortex.

[0067] On the basis of the above-mentioned clothes drying device structure, the embodiment of the present application further provides a control method of the clothes drying device, the control method comprising:

[0068] S1, acquiring characteristic parameters of the clothes to be dried.

[0069] The characteristic parameters of the clothes to be dried include material, weight, moisture content and the like of the clothes to be dried, which can be acquired through corresponding detection devices arranged on the clothes drying device. Specifically, the material of the clothes to be dried can be acquired through an image recognition device on the clothes drying device, the weight of the clothes to be dried can be acquired through a weight sensor arranged on the drum, and the moisture content of the clothes to be dried can be acquired through a moisture content sensor (such as a capacitive sensor which calculates the moisture content by detecting the dielectric constant change of the clothes, or an infrared sensor which monitors the moisture content by analyzing the infrared spectrum characteristics reflected by the surface of the clothes) arranged on the drum.

[0070] S2, determining the drying program and the parameter threshold values of each drying sub-stage corresponding to the drying program based on the characteristic parameters.

[0071] In the case where the characteristic parameters include the material of the clothes to be dried, the drying program and the parameter threshold values of each drying sub-stage corresponding to the drying program are determined based on the material of the clothes to be dried. Each drying program includes a plurality of drying sub-stages, and each drying sub-stage specifically includes a temperature rising stage (a clothes heating stage after the heating member is turned on), a constant speed stage (a clothes drying stage with a constant moisture content change rate), a speed reduction stage (a clothes drying stage with a gradually decreasing moisture content change rate), and a cold wind stage (a clothes cooling stage after the heating member is turned off), and the parameter threshold values at least include preset temperature threshold values and preset moisture content threshold values of each drying sub-stage.

[0072] Specifically, if the material of the clothes to be dried is a chemical fiber material, the drying program is determined as a chemical fiber fast drying mode (medium-high temperature 50-60℃, which can quickly evaporate water), and the parameter threshold values of each drying sub-stage corresponding to the chemical fiber fast drying mode are determined based on the chemical fiber fast drying mode. If the material of the clothes to be dried is a cotton material, the drying program is determined as a cotton strong drying mode (medium-high temperature 60-70℃, which can quickly evaporate water and shorten the drying period), and the parameter threshold values of each drying sub-stage corresponding to the cotton strong drying mode are determined based on the cotton strong drying mode. If the material of the clothes to be dried is a wool material, the drying program is determined as a wool gentle drying mode (low temperature below 40℃, which can avoid fiber shrinkage caused by high temperature), and the parameter threshold values of each drying sub-stage corresponding to the wool gentle drying mode are determined based on the wool gentle drying mode.

[0073] It should be noted that the above examples and values are only based on the material of some of the clothes to be dried to determine the drying program, and the corresponding suitable drying program can also be determined according to other specific materials of the clothes to be dried, and the embodiment will not be described one by one.

[0074] Further, after determining the drying program, and in the case that the characteristic parameters include the initial weight and the initial moisture content, the parameter threshold further includes a target drying time length, and step S2 includes:

[0075] S21, determining the total time length of the entire drying process based on the initial weight and the initial moisture content.

[0076] The total time length of the drying program of clothes of different materials is different, and after determining the corresponding drying program based on the material of the clothes to be dried, an initial default time length value is preset in the program. Then, the initial weight and the initial moisture content of the clothes are obtained, and the preset default weight value and the default moisture content value are compared and calibrated, and finally the total time length of the entire drying process is determined.

[0077] Specifically, the initial default time length value corresponds to a specific default weight reference and a default moisture content reference. By comparing the actual initial weight of the clothes with the default weight value, and comparing the actual initial moisture content with the default moisture content value, the total time length is adjusted accordingly according to the comparison result. Among them, the greater the initial weight of the clothes, the longer the total time length required; the smaller the initial weight, the shorter the total time length. Similarly, the higher the initial moisture content, the total time length needs to be correspondingly extended; the lower the initial moisture content, the total time length can be shortened. This adjustment mechanism ensures that the drying time length is accurately matched with the actual state of the clothes, which not only avoids damage to the clothes caused by excessive drying, but also helps to prevent the effect of insufficient drying time length on the clothes.

[0078] S22, determining the time length proportion value of each drying sub-stage based on the initial moisture content.

[0079] The initial moisture content of the clothes to be dried will directly affect the time length distribution proportion of each drying sub-stage. Before the drying program runs, it is judged whether the actual measured initial moisture content of the clothes is within the preset default moisture content range, and the time length proportion value of each drying sub-stage is adjusted according to the judgment result. Specifically, step S22 includes steps S221 to S224.

[0080] S221, comparing the initial moisture content with the first preset moisture content threshold and the second preset moisture content threshold respectively, wherein the first preset moisture content threshold is less than the second preset moisture content threshold.

[0081] The different drying programs have different first preset moisture content thresholds and second preset moisture content thresholds. After determining the drying program based on the material of the clothes to be dried, the first preset moisture content threshold (low) and the second preset moisture content threshold (high) are set to construct a three-level moisture content judgment system of “normal-low-high” to better reasonably allocate the time length ratio values of the drying sub-stages. The use of double thresholds can provide a more reasonable scientific benchmark for the adjustment of the time length ratio values of the drying sub-stages, which is beneficial to improving the accuracy and fault tolerance of the drying equipment during operation and avoiding misjudgment or excessive adjustment caused by a single threshold.

[0082] S222, if the initial moisture content is greater than or equal to the first preset moisture content threshold and less than or equal to the second preset moisture content threshold, the time length ratio values of the drying sub-stages are set to the preset time length ratio values.

[0083] When the initial moisture content is between the first preset moisture content threshold and the second preset moisture content threshold, i.e., the initial moisture content is within the default moisture content range, the time length ratio values of the drying sub-stages adopt the default preset time length ratio values, which embodies the principle of “standard working condition priority”. This step directly calls the default parameters optimized by experiments, which can minimize the energy consumption fluctuations and program complexity caused by unnecessary adjustments while ensuring the basic drying effect, achieving a balance between efficiency and stability. For example, the default preset time length ratio values of the drying sub-stages are 5:10:6:2, i.e., the preset time length ratio values of the sequentially arranged warming-up stage, constant-speed stage, speed-down stage, and cold air stage are 5:10:6:2.

[0084] It should be noted that the numerical values in the above examples are only exemplary and should not be construed as limiting the scope of protection of the present application.

[0085] S223, if the initial moisture content is less than the first preset moisture content threshold, the time length ratio values of the warming-up stage and the cold air stage are increased based on the preset time length ratio values, and the time length ratio values of the constant-speed stage and the speed-down stage are reduced.

[0086] When the initial moisture content of the clothes to be dried is less than the first preset moisture content threshold, the time length ratio values of the warming-up stage and the cold air stage can be appropriately increased for low-moisture clothes, and the time length ratio values of the constant-speed stage and the speed-down stage can be appropriately reduced. This adjustment can avoid problems such as over-drying, fiber damage, or energy waste caused by long-time high-temperature constant-speed stage and speed-down stage for low-humidity clothes, and the appropriate extension of the cold air stage helps to quickly cool and shape, protecting the shape of the clothes and achieving the goal of “gentle and efficient” drying. For example, in the case where the preset time length ratio values of the warming-up stage, constant-speed stage, speed-down stage, and cold air stage are 5:10:6:2, if the initial moisture content is less than the first preset moisture content threshold, the time length ratio values of the warming-up stage, constant-speed stage, speed-down stage, and cold air stage are adjusted to 5:8:5:2.

[0087] It should be noted that the values in the above examples are only exemplary and should not constitute a limitation on the scope of protection of the present application.

[0088] S224, if the initial moisture content is greater than the second preset moisture content threshold, the time length ratio value of the warming-up stage and the cold air stage is reduced based on a preset time length ratio value, and the time length ratio value of the constant speed stage and the speed-down stage is increased.

[0089] When the initial moisture content of the clothes to be dried is greater than the second preset moisture content threshold, the time length ratio value of the warming-up stage and the cold air stage can be appropriately reduced for clothes with high moisture content, and the time length ratio value of the constant speed stage and the speed-down stage can be appropriately increased. This adjustment can prolong the effective drying time (mainly in the constant speed stage), ensure that the high-humidity clothes are fully dehydrated, while reducing the preheating energy consumption of the warming-up stage and the heat loss of the cold air stage, realizing the dual optimization of "deep drying" and "energy saving and consumption reduction", especially suitable for the drying needs of high-humidity or heavy clothes. Exemplarily, in the case that the preset time length ratio values of the warming-up stage, the constant speed stage, the speed-down stage and the cold air stage are 5:10:6:2, if the initial moisture content is greater than the second preset moisture content threshold, the time length ratio values of the warming-up stage, the constant speed stage, the speed-down stage and the cold air stage are adjusted to 5:12:7:2.

[0090] It should be noted that the values in the above examples are only exemplary and should not constitute a limitation on the scope of protection of the present application.

[0091] S23, determining the target drying time of each drying sub-stage based on the total time length and the time length ratio value.

[0092] After determining the corresponding drying program based on the material of the clothes to be dried, the initial weight and the initial moisture content data of the clothes need to be further combined to accurately calculate the total time length of the entire drying process. At the same time, the initial moisture content also directly affects the time length ratio distribution of each drying sub-stage. By comparing the initial moisture content with the preset threshold range, the time length ratio values of the warming-up, constant speed, speed-down and cold air sub-stages can be intelligently adjusted to ensure that the time length of each stage is highly matched with the actual humidity state of the clothes. Finally, through the multiplication operation of the total time length and the time length ratio value of the corresponding sub-stage, the target drying time of each drying sub-stage can be accurately calculated, realizing the precise drying management from "global overall control" to "stage fine tuning", which not only guarantees the drying effect of the clothes, but also avoids the fiber damage or energy waste caused by over-drying, fully embodying the scientificity and efficiency of the intelligent drying technology.

[0093] S3, obtaining the drying parameters of the clothes to be dried in the drying process.

[0094] The drying parameters of the clothes to be dried include real-time state parameters such as the current temperature, the current moisture content, and the current drying duration of the clothes to be dried. To accurately obtain these parameters, multiple types of detection devices can be configured in the clothes drying device. For example, the current temperature of the clothes is collected in real time by a temperature sensor, the current moisture content is dynamically monitored by a moisture content sensor, and the current drying duration is continuously tracked by a timer.

[0095] S4, compare the drying parameter with the parameter threshold of each drying sub-stage to determine the current drying sub-stage.

[0096] The drying parameter includes the current temperature of the clothes to be dried. The current temperature of the clothes to be dried is compared with the preset temperature threshold of each drying sub-stage to determine the current drying sub-stage. Specifically, step S4 includes steps S41 to S44, wherein, as shown in Figure 7 , the first preset temperature threshold T1, the second preset temperature threshold T2, and the third preset temperature threshold T3 increase in turn; the first preset temperature threshold T1 is less than the highest temperature T a of the warming-up stage, the second preset temperature threshold T2 is greater than the highest temperature T b of the constant-speed stage, the third preset temperature threshold T3 is less than the highest temperature T c of the speed-down stage, and the fourth preset temperature threshold T4 is equal to the lowest temperature T d of the speed-down stage.

[0097] S41, when it is determined that the current temperature of the clothes to be dried is less than or equal to the first preset temperature threshold, it is determined that the warming-up stage is entered.

[0098] When the current temperature of the clothes to be dried is less than or equal to the first preset temperature threshold T1, it indicates that the clothes have not reached the minimum starting temperature T a required for the constant-speed stage, and it is determined that the drying program has entered the warming-up stage. At this time, the heating member needs to be started to quickly raise the temperature of the clothes to T a and above, while cooperating with the low-speed hot air circulation to ensure uniform heating of the clothes and avoid local overheating that may cause fiber damage, thereby laying a foundation for the subsequent constant-speed stage for efficiently reducing the moisture content.

[0099] S42, when it is determined that the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, and the duration that the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than the second preset temperature threshold is greater than the first preset duration, it is determined that the constant-speed stage is entered.

[0100] When the current temperature of the clothes to be dried is greater than T1 and less than or equal to T2, and the duration of this temperature interval exceeds the first preset duration, it indicates that the drying program has entered the constant-speed stage. At this time, it is necessary to maintain the dynamic balance of the heating power and the fan speed, to keep the current temperature of the clothes fluctuating between T a and T b , (neither too high to cause waste of energy, nor too low to affect the moisture evaporation efficiency), while the high-humidity airflow is taken away by the airflow, ensuring that the moisture of the clothes is continuously discharged at a constant rate, achieving an efficient and energy-saving drying effect.

[0101] S43, when it is determined that the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than or equal to the third preset temperature threshold, and the duration for which the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than the third preset temperature threshold is greater than the second preset duration, it is judged that the speed reduction stage is entered.

[0102] When the current temperature of the clothes to be dried is greater than T2 and less than or equal to T3, and the duration of this temperature interval exceeds the second preset duration, it indicates that the drying program has entered the speed reduction stage. At this time, it is necessary to gradually reduce the heating power and adjust the fan speed, while cooperating with the humidity sensor to monitor the change of the moisture content in real time, and dynamically fine-tune the parameters to ensure that the residual moisture is completely removed, achieving the dual goals of deep drying and fiber protection.

[0103] S44, when it is determined that the current temperature of the clothes to be dried is greater than the third preset temperature threshold, and the duration for which the current temperature of the clothes to be dried is greater than the third preset temperature threshold is greater than the third preset duration, it is judged that the cold air stage is entered.

[0104] When the current temperature of the clothes to be dried is greater than T3 and the duration exceeds the third preset duration, it indicates that the clothes have basically completed the main drying process, and can enter the final cold air stage. At this time, the heating member needs to be turned off, and the low-temperature airflow is used to quickly take away the residual heat of the clothes and reduce the surface temperature to T d The following effectively reduces the generation of wrinkles of the clothes, and realizes the natural stretching of the clothes.

[0105] S5, when it is judged that each drying sub-stage is entered, the opening degree of the adjusting member 21 is adjusted, so that the air volume ratio of the first air supply port 11 and the second air supply port 12 corresponds to the current drying sub-stage.

[0106] Specifically, step S5 includes steps S51 to S54, wherein the third preset opening degree value is less than the second preset opening degree value, and greater than the first preset opening degree value and the fourth preset opening degree value.

[0107] S51, when it is judged that the temperature rising stage is entered, the opening degree of the adjusting member 21 is set to the first preset opening degree value.

[0108] The first preset opening degree value is 0% to 10% of the full opening state. For example, when the first preset opening degree value is 0%, the adjusting member 21 is in a closed state, and the flow blocking member intercepts almost all the gas flowing to the first air outlet 11. The airflow in the air duct mainly flows into the clothes treatment cavity of the cylinder from the bottom of the cylinder through the second air outlet 12.

[0109] Specifically, when entering the temperature rising stage, the heating member is started at rated power to achieve rapid temperature rising, and the opening degree of the adjusting member 21 is set to the first preset opening degree value, so that the hot air is guided to spiral upward from the bottom of the cylinder through the second air outlet 12, forming a hot air flow path from bottom to top. This design enables the clothes at the bottom to be in contact with the hot air first, prolongs the residence time of the hot air in the cylinder, promotes efficient penetration and distribution of heat to the deep layers of the clothes, and avoids damage to the fabric caused by local high temperature. At the same time, the low-speed fan reduces airflow turbulence dissipation and optimizes heat energy utilization, thereby improving heating efficiency while reducing overall energy consumption.

[0110] Further, in the case where the drying parameters include the current temperature of the clothes to be dried, when it is determined that the temperature rising stage is entered, the power of the heating member is adjusted based on the current temperature of the clothes to be dried. Specifically, the temperature rising stage can be divided into multiple detection sub-nodes according to the target drying time, for example, time nodes at 1 / 3 and 2 / 3 of the target drying time. It is determined whether the current temperature of the clothes to be dried at each sub-node is greater than or equal to the expected temperature (a temperature value predicted by the temperature change curve). If the current temperature at the sub-node is less than the expected temperature, the power of the heating member is increased, which is beneficial to ensure that the current temperature of the clothes to be dried can be heated to the minimum temperature T a .

[0111] S52, when it is determined that the constant speed stage is entered, the opening degree of the adjusting member 21 is set to the second preset opening degree value.

[0112] The second preset opening degree value is 90% to 100% of the full opening state. For example, when the second preset opening degree value is 100% of the full opening state, the adjusting member 21 is in a fully open state, and the flow blocking member no longer intercepts the gas flowing to the first air outlet 11. Part of the gas in the air duct flows into the clothes treatment cavity of the cylinder from the bottom of the cylinder through the second air outlet 12, and the other part of the gas flows into the clothes treatment cavity of the cylinder from the top of the cylinder through the first air outlet 11.

[0113] Specifically, when entering the constant-speed stage, the heating member is maintained to operate at the rated power, and the opening degree of the adjusting member 21 is set to the second preset opening degree value, so as to realize the airflow path optimization (part of the gas flows into the clothes treatment cavity from the bottom of the cylinder through the second air supply port 12, and the other part of the gas flows into the clothes treatment cavity from the top of the cylinder through the first air supply port 11 after passing through the second air supply port 12), so that not only the high-humidity airflow can be effectively taken away to promote the moisture in the cavity to be discharged, but also the three-dimensional circulating airflow mode can be formed to enhance the sufficient contact between the hot air and the clothes and improve the drying efficiency; meanwhile, through the bottom and top dual-direction air inlet mode, the temperature distribution uniformity in the cavity can be improved to avoid local overheating or dry dead angle, and finally the more efficient and uniform clothes drying effect can be realized.

[0114] Further, in the case where the drying parameter includes the current moisture content of the clothes to be dried, when it is judged that the constant-speed stage is entered, the speed of the fan is adjusted based on the current moisture content, specifically, the constant-speed stage can be divided into multiple detection sub-nodes according to the target drying time length (for example, the time nodes at 1 / 3 and 2 / 3 of the target drying time length), and it is judged whether the current moisture content of the clothes to be dried at each sub-node is less than or equal to the expected moisture content (the moisture content value predicted by the moisture content change curve), if the current moisture content at the sub-node is greater than the expected moisture content, the speed of the fan is increased, which is beneficial to ensure that the current moisture content of the clothes to be dried can be reduced to the highest moisture content W b (the intersection point of the moisture content change curve and the boundary line b).

[0115] S53, when it is judged that the constant-speed stage is entered, the opening degree of the adjusting member 21 is set to the third preset opening degree value.

[0116] The third preset opening degree value is 45% to 55% of the full opening state, for example, the third preset opening degree value is 50% of the full opening state, at this time, the flow blocking member intercepts part of the gas flowing to the first air supply port 11, most of the gas in the air duct flows into the cylinder from the second air supply port 12, and a small part of the gas flows into the cylinder from the first air supply port 11 after passing through the second air supply port 12.

[0117] Specifically, when entering the speed reduction stage, the opening degree of the adjusting member 21 is set to a third preset opening degree value while gradually reducing the heating power, at this time, the flow blocking member intercepts part of the gas flowing to the first air outlet 11, most of the gas in the air duct flows into the clothes treatment cavity from the bottom of the cylinder through the second air outlet 12, and a small part of the gas flows into the clothes treatment cavity from the top of the cylinder through the first air outlet 11 after passing through the second air outlet 12, so that the hot air directly penetrates the bottom layer of the clothes to improve the drying efficiency through the main airflow at the bottom, and the circulation convection is formed by the auxiliary flow at the top to avoid local overheating and damage to the fabric, while the heating power is reduced in steps, the temperature uniformity in the cavity is maintained, the waste of heat energy is reduced, and the goal of smooth transition from high speed to low speed in the drying process, energy consumption and effect optimization is finally achieved, that is, the deep drying uniformity of the clothes is ensured while the energy consumption is reduced, and the relative uniform heating of the clothes helps to reduce wrinkle generation and ensure the comfort of the clothes.

[0118] Further, in the case where the drying parameters include the current moisture content of the clothes to be dried, when it is judged to enter the speed reduction stage, the speed of the fan is adjusted based on the current moisture content, specifically, the speed reduction stage can be divided into multiple detection nodes according to the target drying time, such as the time nodes at 1 / 3 and 2 / 3 of the target drying time, and it is judged whether the current moisture content of the clothes to be dried at each node is less than or equal to the expected moisture content (the moisture content value predicted by the moisture content change curve), if the current moisture content at the node is greater than the expected moisture content, the speed of the fan is appropriately increased, which is beneficial to ensure that the current moisture content of the clothes to be dried can be reduced to the maximum moisture content W c (the intersection of the moisture content change curve and the boundary line c).

[0119] S54, when it is judged to enter the cold wind stage, the opening degree of the adjusting member 21 is set to a fourth preset opening degree value.

[0120] The fourth preset opening degree value is 0% to 10% of the full open state, for example, the fourth preset opening degree value is 0% or 10% of the full open state, at this time, the adjusting member 21 is in the closed state, and the flow blocking member intercepts almost all the gas flowing to the first air outlet 11, and the airflow in the air duct mainly flows into the clothes treatment cavity of the cylinder from the bottom of the cylinder through the second air outlet 12.

[0121] Specifically, when entering the cold air stage, the heating member is turned off and the fan is maintained to run at a low-middle speed, at this time, the air flow is injected into the clothes treatment cavity from the bottom of the cylinder through the second air supply port 12 to form a cold air circulation channel from bottom to top, so that not only the residual heat of the clothes is quickly taken away by the cold air directly blowing from the bottom to shorten the cooling time and realize the rapid cooling of the clothes, but also the gradient cooling technology is used to avoid the fiber distortion caused by the impact of high-speed air flow, and the clothes are in a natural and relaxed state during the cooling process, thereby effectively reducing the wrinkles of the clothes.

[0122] It should be noted that the values of the first, second, third and fourth preset opening degree values in the above examples are only exemplary and should not be construed as limiting the scope of protection of the present application.

[0123] The clothes drying device of the present application can dynamically adjust the air volume ratio of the first air supply port 11 and the second air supply port 12 according to the actual drying scene during the clothes drying process, thereby effectively reducing the generation of wrinkles of the clothes while ensuring the basic drying function, and can intensify the penetration of hot air in the local area in the partial drying stage, realize the performance optimization from rapid drying to fine care, and finally achieve the synergistic optimization of efficiency, energy consumption and care.

[0124] Specifically, by obtaining the characteristic parameters of the clothes to be dried, the drying program and the parameter threshold of each sub-stage are customized and matched, the accurate stage control of the drying process is realized, and specifically, the drying parameters are monitored in real time during the drying process and the current drying sub-stage is judged, the opening degree of the adjusting member 21 in the air duct is dynamically adjusted, and the air volume ratio of the first air supply port 11 and the second air supply port 12 is adapted to the needs of different drying sub-stages. Among them, in the early stage, the air volume of the second air supply port 12 for bottom air inlet can be increased to make the hot air fully contact with the clothes to be dried and improve the contact time of the clothes to be dried with the hot air, thereby improving the energy utilization rate, in the middle stage, the air volume of the first air supply port 11 for top air inlet can be increased to facilitate the hot air to quickly take away the high humidity air, and in the later stage, the air flow distribution can be optimized by adjusting the air volume ratio, thereby improving the drying efficiency while ensuring the uniform drying of the clothes, not only solving the problem that the clothes are prone to wrinkles when the air is supplied by the traditional single air supply port, but also effectively reducing the energy consumption.

[0125] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to 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 schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A clothes drying device, characterized in that, The clothes drying equipment includes a drum and an air duct assembly communicating with the drum; The air duct assembly is constructed with an air duct, the air duct having a first air outlet (11) and a second air outlet (12) respectively connected to the cylinder body, the height of the first air outlet (11) is higher than the height of the second air outlet (12), and in the airflow direction of the air duct, the first air outlet (11) is located downstream of the second air outlet (12). An adjustment component (21) is also provided in the air duct, which is used to adjust the air volume ratio of the first air outlet (11) and the second air outlet (12).

2. The clothes drying equipment according to claim 1, characterized in that, The adjusting member (21) includes a baffle that is adapted to the cross-sectional dimensions of the air duct, the baffle being rotatably installed in the air duct and located downstream of the second air outlet (12).

3. The clothes drying equipment according to claim 1, characterized in that, The air duct is equipped with a guide plate (22); and / or The first air outlet (11) is located on the back wall of the cylinder near its top, and the second air outlet (12) is located on the back wall of the cylinder near its bottom.

4. A control method for a clothes drying device, characterized in that, The clothes drying device is the clothes drying device according to any one of claims 1 to 3, and the control method includes: Obtain the characteristic parameters of the clothes to be dried; The drying process and the parameter thresholds for each drying sub-stage corresponding to the drying process are determined based on the aforementioned characteristic parameters. Obtain the drying parameters of the clothes to be dried during the drying process; The drying parameters are compared with the parameter thresholds of each drying sub-stage to determine the current drying sub-stage; When it is determined that the drying sub-stage has been entered, the opening of the regulating component (21) is adjusted so that the air volume ratio of the first air outlet (11) and the second air outlet (12) corresponds to the current drying sub-stage.

5. The control method for the clothes drying equipment according to claim 4, characterized in that, Each drying sub-stage includes a heating stage, a constant speed stage, a deceleration stage, and a cold air stage arranged in sequence. The phrase "adjusting the opening degree of the regulating component (21) when it is determined that a drying sub-stage has begun" includes: When it is determined that the heating stage has been entered, the opening degree of the adjusting component (21) is set to the first preset opening degree value; When it is determined that the constant speed stage has been entered, the opening degree of the adjusting member (21) is set to the second preset opening degree value; When it is determined that the deceleration phase has been entered, the opening degree of the adjustment component (21) is set to the third preset opening degree value; When it is determined that the cold air stage has been entered, the opening degree of the adjustment component (21) is set to the fourth preset opening degree value; The third preset opening value is less than the second preset opening value, but greater than the first preset opening value and the fourth preset opening value.

6. The control method for the clothes drying equipment according to claim 5, characterized in that, The first preset opening value and the fourth preset opening value are 0% to 10% of the fully open state; The second preset opening value is 90% to 100% of the fully open state; The third preset opening value is 45% to 55% of the fully open state.

7. The control method for the clothes drying equipment according to claim 5, characterized in that, The drying parameters include the current temperature of the clothes to be dried. The phrase "comparing the drying parameters with the parameter thresholds of each drying sub-stage to determine the current drying sub-stage" includes: comparing the current temperature of the clothes to be dried with the preset temperature thresholds of each drying sub-stage to determine the current drying sub-stage. When it is determined that the current temperature of the clothes to be dried is less than or equal to the first preset temperature threshold, it is determined that the heating stage has begun. When it is determined that the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than or equal to the second preset temperature threshold, and the duration for which the current temperature of the clothes to be dried is greater than the first preset temperature threshold and less than the second preset temperature threshold is greater than the first preset duration, it is determined that the constant speed stage has been entered. When it is determined that the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than or equal to the third preset temperature threshold, and the duration for which the current temperature of the clothes to be dried is greater than the second preset temperature threshold and less than the third preset temperature threshold is greater than the second preset duration, it is determined that the process enters the deceleration phase. When it is determined that the current temperature of the clothes to be dried is greater than the third preset temperature threshold, and the duration for which the current temperature of the clothes to be dried is greater than the third preset temperature threshold is greater than the third preset duration, it is determined that the cold air stage has been entered. The first preset temperature threshold, the second preset temperature threshold, and the third preset temperature threshold increase sequentially; the first preset temperature threshold is less than the highest temperature corresponding to the heating stage, the second preset temperature threshold is greater than the highest temperature corresponding to the constant speed stage, and the third preset temperature threshold is less than the highest temperature of the deceleration stage.

8. The control method for the clothes drying equipment according to claim 7, characterized in that, The drying parameters include the current temperature and current moisture content of the clothes to be dried. The drying equipment also includes a heating element and a fan. The control method further includes: When it is determined that the heating phase has begun, the heating element and the fan are started, and the power of the heating element is adjusted based on the current temperature. When it is determined that the constant speed stage has been entered, the speed of the fan is adjusted based on the current moisture content; When it is determined that the fan has entered a deceleration phase, the fan speed is adjusted based on the current moisture content. When it is determined that the cold air stage has begun, the heating component is turned off.

9. The control method for the clothes drying equipment according to claim 5, characterized in that, The characteristic parameters include initial weight and initial moisture content, the parameter thresholds include target drying time, and the "determining the drying program and the parameter thresholds for each drying sub-stage corresponding to the drying program based on the characteristic parameters" includes: The total duration of the entire drying process is determined based on the initial weight and the initial moisture content. The duration ratio of each drying sub-stage is determined based on the initial moisture content; The target drying time for each drying sub-stage is determined based on the total time and the time ratio.

10. The control method for the clothes drying equipment according to claim 9, characterized in that, The phrase "determining the time ratio of each drying sub-stage based on the initial moisture content" includes: The initial moisture content is compared with a first preset moisture content threshold and a second preset moisture content threshold, wherein the first preset moisture content threshold is less than the second preset moisture content threshold. If the initial moisture content is greater than or equal to the first preset moisture content threshold and less than or equal to the second preset moisture content threshold, then the time ratio of each drying sub-stage is set to a preset time ratio value. If the initial moisture content is less than the first preset moisture content threshold, then based on the preset duration ratio, the duration ratio of the heating stage and the cooling stage is increased, and the duration ratio of the constant speed stage and the deceleration stage is decreased. If the initial moisture content is greater than the second preset moisture content threshold, then based on the preset duration ratio, the duration ratio of the heating stage and the cooling stage is reduced, and the duration ratio of the constant speed stage and the deceleration stage is increased.

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