CN109385866B - Control method of clothes drying equipment and clothes drying equipment - Google Patents

Abstract

The embodiment of the invention provides a control method of clothes drying equipment and the clothes drying equipment, and belongs to the field of household appliance optimization design. The method comprises the following steps: determining a weighing value of clothes to be dried; selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval; performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe; and detecting a humidity value and a dry judgment temperature value in the clothes drying equipment in the drying process, and judging that the drying is finished when the humidity value is smaller than a preset humidity threshold value or when the dry judgment temperature value meets a preset judgment condition or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe. Through above-mentioned technical scheme, according to the clothing value of weighing selection the drying condition of carrying out the drying process and through humidity value control drying process, improve drying efficiency to can realize the accurate control to drying process.

Description

Control method of clothes drying equipment and clothes drying equipment

Technical Field

The invention relates to household appliance optimization design, in particular to a control method of clothes drying equipment and the clothes drying equipment.

Background

Clothes drying equipment among the prior art, especially wash and dry integrative equipment judge that the stoving in-process only uses temperature sensor, because temperature sensor can not the direct reaction humidity change, so judge futilely inaccurate, the condition that the small load was excessively dried often can appear, the heavy load is dried and is not dry, and user experience is very poor, has the defect.

In view of the above technical problems, no good solution is available in the prior art.

Disclosure of Invention

The embodiment of the invention aims to provide a method and equipment, which can improve the accuracy of judgment of completion of a drying process.

In order to achieve the above object, an embodiment of the present invention provides a control method of a laundry drying apparatus, the method including: determining a weighing value of clothes to be dried; selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval; performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe; and detecting a humidity value and a dryness judging temperature value in the clothes drying equipment in the drying process, and judging that the drying is finished when the humidity value is smaller than a preset humidity threshold value or when the dryness judging temperature value meets a preset judging condition or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe.

Optionally, the drying parameter is associated with a drying efficiency of the laundry drying apparatus, the method comprising: setting drying parameters of the drying gear according to the clothes weighing value and the drying efficiency; and after drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value.

Optionally, the method comprises determining the weighing value by: executing inertia detection when the roller rotates to obtain an inertia value; and determining the laundry weight value according to a mapping relationship between the inertia value and the laundry mass.

Optionally, the performing inertia detection while the drum is rotating to obtain an inertia value includes: performing inertia detection at least twice while rotating the drum at a second rotational speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time between each inertia detection, wherein the third rotation speed is different from the second rotation speed; and calculating the average value of the obtained at least two first inertia values as the inertia value.

Optionally, the method comprises: and performing inertia detection twice to obtain two inertia values, wherein when the difference value between the two inertia values is larger than a preset value, the obtained inertia value is the inertia value, and otherwise, the average value of the two inertia values is used as the inertia value.

Optionally, the performing inertia detection while the drum is rotating to obtain an inertia value includes: executing inertia detection when the roller rotates at a second rotating speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time, wherein the third rotation speed is different from the second rotation speed; after the preset time, controlling the drum to rotate at the second rotating speed and performing inertia detection again; and repeatedly executing the steps, and when inertia detection is executed for a preset number of times, calculating an average value of the obtained plurality of first inertia values to serve as the inertia value.

Optionally, the method comprises: when the inertia detection is performed for the preset times, calculating a difference value between every two first inertia values in the plurality of first inertia values, and when the calculated difference value has a difference value larger than a preset difference value, taking the last first inertia value obtained by performing the inertia detection as the inertia value; and when the difference value which is larger than the preset difference value does not exist in the calculated difference values, calculating an average value of the obtained plurality of first inertia values as the inertia value.

Optionally, before performing the inertia detection, the method further comprises: performing roller eccentricity judgment at a first rotating speed, and determining whether an eccentricity value is smaller than a preset eccentricity value; and when the determined eccentricity value is smaller than the preset eccentricity value, executing inertia detection at a second rotating speed to obtain the inertia value.

Alternatively, the eccentricity determination is repeatedly performed when the determined eccentricity value is greater than or equal to the preset eccentricity value.

Optionally, the method further comprises: and when the eccentricity judgment is performed for a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value, setting the inertia value as a preset inertia value.

Optionally, the method comprises: and detecting the start-stop temperature value of the clothes drying equipment in the drying process, and controlling the heating pipe to be switched on or switched off according to the start-stop temperature value.

Optionally, the drying temperature value is detected at an air outlet of a condenser of the clothes drying equipment, and the start-stop temperature value is detected at an air outlet of a drying tunnel of the clothes drying equipment.

Optionally, the controlling the heating pipe to be turned on or off according to the start-stop temperature value includes: setting a conduction threshold and a closing threshold of the heating pipe; and conducting the heating pipe when the start-stop temperature value is smaller than the conduction threshold value, and closing the heating pipe when the start-stop temperature value is larger than the closing threshold value, wherein the conduction threshold value is smaller than the closing threshold value.

Optionally, the method comprises: detecting a temperature value of a condenser air outlet of the clothes drying equipment as the drying judgment temperature value in the drying process; when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, judging that the drying is finished; or when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, the drying is judged to be finished.

In another aspect, an embodiment of the present invention provides a clothes drying apparatus, including: the clothes dryer comprises a barrel part for containing clothes, a drying component for drying the clothes, and a controller component for controlling the operation of the drying component, wherein the drying component comprises a heating pipe; the controller assembly comprises a humidity sensor, a temperature sensor and a controller; the humidity sensor is configured to detect a humidity value in the laundry drying apparatus during a drying process; the temperature sensor is configured to detect a dryness determination temperature value of the laundry drying apparatus; and the controller is configured to: determining a weighing value of clothes to be dried; selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval; performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe; in the drying process, when the humidity value is smaller than a preset humidity threshold value, or when the dryness judging temperature value meets a preset judging condition, or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe, the drying is judged to be finished.

Optionally, the drying condition is associated with a drying efficiency of the laundry drying apparatus, the controller is further configured to: setting drying parameters of the drying gear according to the clothes weighing value and the drying efficiency; and after drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value.

Optionally, the controller is configured to: executing inertia detection when the roller rotates to obtain an inertia value; and determining the laundry weight value according to a mapping relationship between the inertia value and the laundry mass.

Optionally, the controller is configured to: performing inertia detection at least twice while rotating the drum at a second rotational speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time between each inertia detection, wherein the third rotation speed is different from the second rotation speed; and calculating the average value of the obtained at least two first inertia values as the inertia value.

Optionally, the controller is configured to: and performing inertia detection twice to obtain two inertia values, wherein when the difference value between the two inertia values is larger than a preset value, the obtained inertia value is the inertia value, and otherwise, the average value of the two inertia values is used as the inertia value.

Optionally, the controller is configured to: executing inertia detection when the roller rotates at a second rotating speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time, wherein the third rotation speed is different from the second rotation speed; after the preset time, controlling the drum to rotate at the second rotating speed and performing inertia detection again; and repeatedly executing the steps, and when inertia detection is executed for a preset number of times, calculating an average value of the obtained plurality of first inertia values to serve as the inertia value.

Optionally, the controller is configured to: when the inertia detection is performed for the preset times, calculating a difference value between every two first inertia values in the plurality of first inertia values, and when the calculated difference value has a difference value larger than a preset difference value, taking the last first inertia value obtained by performing the inertia detection as the inertia value; and when the difference value which is larger than the preset difference value does not exist in the calculated difference values, calculating an average value of the obtained plurality of first inertia values as the inertia value.

Optionally, the controller is configured to: performing roller eccentricity judgment at a first rotating speed, and determining whether an eccentricity value is smaller than a preset eccentricity value; and when the determined eccentricity value is smaller than the preset eccentricity value, executing inertia detection at a second rotating speed to obtain the inertia value.

Optionally, the controller is configured to repeatedly perform the eccentricity determination when the determined eccentricity value is greater than or equal to the preset eccentricity value.

Optionally, the controller is configured to: and when the eccentricity judgment is performed for a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value, setting the inertia value as a preset inertia value.

Optionally, the temperature sensor is further configured to detect a start-stop temperature value of the laundry drying apparatus during the drying process; and the controller is configured to control the heating pipe to be switched on or switched off according to the start-stop temperature value.

Optionally, the temperature sensor is configured to detect the drying temperature value at a condenser air outlet of the laundry drying apparatus and the start-stop temperature value at a drying tunnel air outlet of the laundry drying apparatus.

Optionally, the controller is configured to: setting a conduction threshold and a closing threshold of the heating pipe; and conducting the heating pipe when the start-stop temperature value is smaller than the conduction threshold value, and closing the heating pipe when the start-stop temperature value is larger than the closing threshold value, wherein the conduction threshold value is smaller than the closing threshold value.

Optionally, the temperature sensor is configured to detect a temperature value of a condenser air outlet of the laundry drying apparatus during the drying process as the drying temperature value; and the controller is configured to: when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, judging that the drying is finished; or when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, the drying is judged to be finished.

Optionally, the apparatus is a washer dryer.

Through above-mentioned technical scheme, according to the clothing value of weighing selection the drying condition of carrying out the drying process and through humidity value control drying process, improve drying efficiency to can realize the accurate control to drying process.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

fig. 1 is a flowchart of a control method of a laundry drying apparatus according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an exemplary load size determination process according to an embodiment of the present invention;

fig. 3 is a flowchart of determining a weighing value in a control method of a laundry drying apparatus according to an embodiment of the present invention;

fig. 4 is a flowchart of a control method of a laundry drying apparatus according to an exemplary embodiment of the present invention;

fig. 5 is a flowchart of a control method of a laundry drying apparatus according to a preferred embodiment of the present invention;

fig. 6 is a flowchart of a control method of a laundry drying apparatus according to an exemplary embodiment;

fig. 7 is a flowchart of a control method of a laundry drying apparatus according to another exemplary embodiment;

FIG. 8 is a graph fitting the values of the weighing mass M and inertia Iv of the exemplary clothes drying apparatus;

fig. 9 is a block diagram of a laundry drying apparatus according to an embodiment of the present invention; and

fig. 10 is a schematic view of a composition structure of a clothes drying apparatus according to an embodiment of the present invention.

Description of the reference numerals

The device comprises a controller 1, a door 2, an outer barrel 3, an inner barrel 4, a motor 5, a condenser 6, a condenser 7, a condenser outlet NTC, a fan 8, a drying tunnel 9, a heating pipe 10, a humidity sensor 11, an air outlet NTC, a shell 13, a first temperature sensor 14 and a second temperature sensor 15.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

Fig. 1 is a flowchart of a control method of a clothes drying apparatus according to an embodiment of the present invention. The laundry drying apparatus is preferably a washing and drying machine. The washing and drying integrated machine is equipment which can wash clothes and dry the clothes. An all-in-one washer dryer typically includes both a separate washing program and a separate drying program, as well as a washer dryer program. The washing and drying program refers to washing and drying programs which are executed successively. As shown in fig. 1, a control method of a laundry drying apparatus according to an embodiment of the present invention may include:

s101, determining a weighing value of clothes to be dried;

in an embodiment, the weighing value may be a value obtained by weighing the mass of the laundry or a value obtained by detecting the moment of inertia of the laundry, and the two may be used interchangeably. In an embodiment, the laundry weight value to be dried may be obtained by detecting the laundry mass in an inner tub such as a drum, such as a pressure sensor; in various embodiments, the moment of inertia of the laundry to be dried may be obtained through inertia detection, which will be described in detail below.

S102, selecting one drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval.

In an embodiment, a plurality of drying steps may be provided corresponding to the range of the laundry weight value section according to various elements. For example, the elements may include, but are not limited to, drying efficiency, ambient temperature, ambient humidity, type of laundry, single laundry amount, etc. of the laundry drying apparatus. For example, for higher drying efficiency, the drying gear may be set to correspond to a larger clothes weighing interval to cover a wider interval range. Since the drying efficiency of the clothes drying equipment is high, the overall drying time is affected to a low degree by the change of the clothes quality in the same interval range, and therefore the accurate control of the drying process can be realized. In another example, for a scene with a small amount of laundry, the drying gear may be set to correspond to a small laundry weighing interval, so as to further improve the accuracy of the drying process control.

S103, performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of the heating pipe.

In an embodiment, each drying gear may have a corresponding drying condition. The drying conditions may include, but are not limited to, drying process time, maximum conduction time of heating pipes, drying efficiency, drying temperature (e.g., temperature of drying tunnel air outlet or temperature of condenser air outlet), and the like.

S104, detecting a humidity value and a dryness judging temperature value in the clothes drying equipment in the drying process, and judging that the drying is finished when the humidity value is smaller than a preset humidity threshold value or when the dryness judging temperature value meets a preset judging condition or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe.

In an embodiment, the humidity threshold may be set, for example, according to a treatment manner after the drying process, for example, if the user is to wear the laundry directly after drying, the humidity threshold may be set lower, for example, 1% -3%; as another example, if the user is to iron the laundry after drying, the humidity threshold may be suitably increased, for example, 7% -10%.

In an embodiment, the temperature value of the air outlet of the condenser of the clothes drying device can be detected as a dry judgment temperature value in the drying process. For example, the completion of drying may be judged by the following exemplified judgment conditions: when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, the drying completion can be judged; or when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, the drying completion can be judged.

In an embodiment, the maximum on-time of the heating pipe may be estimated according to the maximum laundry amount that the laundry drying apparatus can handle, and when the accumulated on-time of the heating pipe reaches the maximum on-time during the drying process, it may be judged that the drying is completed.

In an embodiment, after determining that drying is completed, the heating pipe may be stopped, and the clothes drying apparatus starts to perform a cooling process to cool, shake, level, etc. the clothes.

Through above-mentioned technical scheme, according to the clothing value of weighing selection the drying condition of carrying out the drying process and through humidity value control drying process, improve drying efficiency to can realize the accurate control to drying process.

In an embodiment, the laundry weight value may be determined by: performing inertia detection while the drum is rotating (e.g., at a second rotational speed) to obtain an inertia value; and determining a laundry weight value according to a mapping relationship between the inertia value and the laundry mass (e.g., M ═ f (I), where M is laundry mass, I is inertia value, and f is a mapping relationship associated with a laundry treatment apparatus).

In an embodiment, the laundry weight value may be determined by: performing a drum eccentricity judgment at a first rotation speed (e.g., 89rpm) and determining whether an eccentricity value is less than a preset eccentricity value a; when the determined eccentricity value is smaller than the preset eccentricity value a, performing inertia detection at a second rotation speed (for example, 91rpm) to obtain an inertia value I; and determining the clothes weighing value according to the inertia value I.

In an embodiment, the unbalance control may be performed by a laundry treating apparatus such as a laundry drying apparatus. The eccentricity is determined by the OOB value. The OBB value is an eccentricity value reflecting the eccentricity of the laundry. Wherein, when the determined eccentricity value (e.g., OOB value) is less than the preset eccentricity value a, performing inertia detection at a second rotation speed (e.g., 91rpm) to obtain an inertia value may include: performing inertia detection at a second rotational speed (e.g., 91rpm) to obtain a first inertia value I1; controlling the drum to rotate at a third rotation speed (e.g., 85rpm) for a predetermined time (e.g., 2s), wherein the third rotation speed is different from the second rotation speed; performing inertia detection again at a second rotation speed (e.g., 91rpm) to obtain a second inertia value I2; and calculating an average value (I1-I2)/2 of the first inertia value I1 and the second inertia value I2 as an inertia value I. In an embodiment, the inertia detecting process may be repeatedly performed, that is, the drum may be repeatedly and alternately controlled to rotate at the second rotation speed and the third rotation speed, and the inertia detection may be performed while the drum rotates at the second rotation speed. In an alternative embodiment, the inertia detection may be performed at least twice while the drum is rotated at the second rotation speed (e.g., 91rpm) to obtain the first inertia value I1; controlling the drum to rotate at a third rotation speed (e.g., 85rpm) for a predetermined time (e.g., 2s) between each inertia detection; calculating an average value of the obtained at least two first inertia values I1 as the inertia value I. In an alternative embodiment, when inertia detection is performed a predetermined number of times (e.g., 2 times, 3 times, 4 times, etc.), an average value of the resulting plurality of detected inertia values (I1, I2, … … In) is calculated as an inertia value I.

In an embodiment, to ensure accurate eccentricity determination, the imbalance control OOB process may be performed multiple times (e.g., 3 times) in an embodiment. In an embodiment, the respective imbalance control OOB processes may be continuously performed without performing a jitter dispersion therebetween. In an embodiment, the eccentricity determination may be repeatedly performed when the determined eccentricity value (e.g., OOB value) is greater than or equal to the preset eccentricity value a. When the eccentricity determination is performed a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value a, the inertia value may be set to a preset inertia value Imax. Wherein, the preset inertia value Imax may be a maximum inertia value that the laundry in the laundry treating apparatus may have, and may be determined by, for example, a maximum drying capacity of the laundry treating apparatus.

In the embodiment, the size of the load to be dried can be judged before drying, and the method is particularly suitable for the washing and drying integrated machine. Alternatively, when inertia detection is performed a predetermined number of times, a difference value (or an absolute value of a difference value) between every two inertia values of a plurality of detected inertia values (I1, I2, … … In) is calculated, and when there is a difference value (e.g., K1) greater than a preset difference value among the calculated difference values, the last inertia value (e.g., In) obtained by performing the inertia detection is taken as the inertia value; and calculating an average value of the obtained plurality of inertia values (I1, I2, … … In) as the inertia value when there is no difference value greater than the preset difference value among the calculated difference values.

Fig. 2 is a schematic diagram of an exemplary load size determination process. In an embodiment, two inertia detections may be performed to obtain two inertia values, where when a difference between the two inertia values is greater than a preset value, the obtained inertia value is the inertia value, and otherwise, an average value of the two inertia values is used as the inertia value. As shown in fig. 2, an example of detecting two times an inertia value is shown, specifically:

after drying begins and before hot throwing, wet cloth weighing can be carried out for multiple times (for example, twice), and each time of weighing obtains an inertia value which is respectively marked as Ia and Ib;

comparing absolute values of difference values between the inertia values Ia and Ib, and if the value of Ia-Ib is smaller than a threshold value K1, marking the load inertia division value I as (Ia + Ib)/2, namely, taking the average value of the two weighing feedback values; otherwise, setting the load inertia distinguishing value I as Ib, namely the feedback value of the second weighing.

And judging the inertia division value I, if I is smaller than a threshold value K2, the load to be dried is a small load, otherwise, the load to be dried is a large load, and adjusting the maximum time for opening the heating pipe according to the judgment result.

When the | Ia-Ib | < K1, the load inertia distinguishing value is recorded as the average value of the two weighing feedback values, and the weighing values before and after the thermal throwing can be considered to be not greatly different; when the | Ia-Ib | ≧ K1, the load inertia distinguishing value is recorded as the feedback value of the second weighing, the difference of the weighing values before and after the thermal swing is considered to be large, and the condition of dehydration failure or downshift may exist in the early washing dehydration. By judging the inertia value through the steps, the condition of inaccurate weighing caused by dehydration failure or dehydration downshift of the washing program can be avoided. According to the arrangement, the problem that the inertia value is inaccurate when a user takes out part of clothes after first inertia detection is avoided. Especially, in the washing and drying integrated device, the first inertia detection occurs after the completion, and before the subsequent inertia detection occurs to start drying, the user is likely to take out the clothes which are not required to be dried in the process, so that the inertia detection is inaccurate.

Fig. 3 is a flowchart of determining a weighing value in a control method of a laundry drying apparatus according to an embodiment of the present invention. The method can improve the accuracy of weighing. It should be noted that the data shown in fig. 3 are only exemplary, and in different embodiments, the selection of the first rotation speed, the second rotation speed, and the third rotation speed may be different according to different clothes treatment apparatuses. In principle, the first rotational speed may be a rotational speed that may maximize the OOB value during OOB, even the rotational speed at which the eccentricity is most severe. In an embodiment, 89rpm may be selected as the first rotational speed. The second rotation speed may be a rotation speed slightly greater than the first rotation speed, enabling the laundry treating apparatus to stably operate, or a rotation speed of the laundry treating apparatus when drying the laundry. In an embodiment, 91rpm may be selected as the second rotation speed. The third rotation speed may be a rotation speed different from the second rotation speed, and may be different from both the first rotation speed and the second rotation speed, which is introduced to eliminate mutual influence between the two inertia detections and ensure that the detection result is accurate. In an embodiment, 85rpm, which is less than the first rotation speed, may be selected as the third rotation speed.

In the embodiment, energy conservation can be further realized and the safety of the drying system can be improved by controlling the on-off state of the heating pipe in the drying process. In an embodiment, the method may include: the method comprises the steps of detecting a start-stop temperature value of the clothes drying equipment in the drying process (for example, the start-stop temperature value is obtained by detecting the temperature of an air outlet of a drying tunnel), and controlling the heating pipe to be switched on or switched off according to the start-stop temperature value. Further, controlling the heating pipe to be turned on or off according to the start-stop temperature value may include: setting a conduction threshold and a closing threshold of the heating pipe; and conducting the heating pipe when the start-stop temperature value is smaller than the conduction threshold value, and closing the heating pipe when the start-stop temperature value is larger than the closing threshold value, wherein the conduction threshold value is smaller than the closing threshold value.

Fig. 4 is a flowchart of a control method of a laundry drying apparatus according to an exemplary embodiment of the present invention. As shown in fig. 4, a control method of a laundry drying apparatus according to an exemplary embodiment of the present invention may include:

s401, starting a drying process, weighing clothes to be dried, and selecting a drying gear corresponding to a load amount according to a weighing result to dry;

s402, in the drying process, an air outlet (for example, an air outlet of a drying tunnel) temperature sensor such as a negative temperature coefficient thermistor NTC detects the air outlet temperature T, and the upper and lower limit temperatures T for starting and stopping a heating pipe are set_s,maxAnd T_s,minMake a judgment when T>T_s,maxWhen the heating pipe is closed, when T is<T_s,minWhen the device is used, the heating pipe is conducted;

s403, detecting the temperature of the air after condensation by a temperature sensor (e.g., NTC) provided at the outlet of the condenser, and detecting the humidity in the tub by a humidity sensor provided between the inner and outer tubs at the top of the tub;

s404, when the detected humidity value is less than the preset humidity threshold D1 or the absolute value of the difference value between the NTC detected temperature value at the outlet of the condenser and the temperature inflection value is greater than the preset temperature threshold T1, determining that the clothes are dried, and then entering a cooling stage.

Fig. 5 is a flowchart of a control method of a laundry drying apparatus according to a preferred embodiment of the present invention. The upper half of fig. 5 is a flow of determining the weight value shown in fig. 3, and the lower half is a flow of classifying the weight value and performing the drying control according to the classification (e.g., L1-L4). As shown in fig. 5, the drying gear may be set to at least two (e.g., 4) in the embodiment.

As shown in fig. 5, in the embodiment, the weighing range may be determined by taking the average of 2 weighing (i.e., (I1+ I2)/2). In a further embodiment, the empty bucket weight value may also be subtracted from the weight value to obtain a visually reflected load weight value. In a preferred embodiment, for example, for a washing and drying machine, the water content can also be visually reflected by the difference of the load weighing values obtained by weighing the dry clothes and the wet clothes twice respectively, and then graded by the water content. In an embodiment, the weight value (e.g., the inertia value I) may be divided into 4 steps according to the weight value, wherein when the average value I is weighed<I_th1When so, gear L1 is executed; when I is_th1≤I<I_th2When so, gear L2 is executed; when I is_th2≤I<I_th3When so, gear L3 is executed; when I is more than or equal to I_th3When the speed is not equal to the predetermined value (I ═ Imax), the L4 shift stage is executed. Each gear can be set with its own drying condition, such as drying process time, maximum conduction time of the heating pipe, drying efficiency, drying temperature (e.g. temperature of the drying tunnel air outlet or temperature of the condenser air outlet), etc.

In an embodiment, the drying parameter may be associated with a drying efficiency of the laundry drying apparatus. The method provided by the above embodiment may include: setting drying parameters of a drying gear according to the weighing value and the drying efficiency of the clothes; and after drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value. For example, the relationship between the energy supplied by the drying system and the temperature and humidity under the current environment can be obtained according to the dryness determination condition (e.g., comparing the humidity value with the preset humidity threshold, comparing the temperature value with the preset temperature threshold, etc.), so that whether the preset system parameters are suitable for the current environment and the habit of the user can be determined. If the drying device is not suitable for use, the system preset parameters can be adjusted according to the change of the temperature and the humidity, so that the system preset parameters can be efficiently dried under different environmental loads, and the requirements are met. In a preferred embodiment, the drying process time and the preset value of the maximum conduction time of the heating pipe corresponding to each gear have a relationship with the drying efficiency of the system, and the drying efficiency E of the system may be obtained by first giving an initial drying efficiency E0 according to the attributes (e.g., rated power, rated capacity, etc.) and kilograms of clothes drying equipment such as the washing and drying machine, and then adjusting Δ E according to the monitored dry condition of the temperature sensor and the humidity sensor. Each time drying is completed, adjustment of drying efficiency E — E0+ Δ E may be performed, and the adjusted value may replace initial drying efficiency E0. As described in detail below in conjunction with fig. 6 and 7.

As shown in fig. 6, an exemplary flow of a control method of a laundry drying apparatus may include:

s601, before the drying process, a first characterization value characterizing the moisture content of the laundry may be weighed.

For example, the moisture content of the laundry directly determines the time required to dry the wet laundry, and other factors determining the required time are the drying efficiency of the laundry treatment apparatus such as the washer-dryer. In an embodiment, the water content of the laundry may be characterized by physical quantities such as a mass of the laundry, which may directly reflect the water content of the laundry, and a moment of inertia of the laundry in the drum, which may indirectly reflect the water content of the laundry because it may be converted to the mass.

S602, determining primary drying time according to the first characterization value, and executing a primary drying process according to the primary drying time.

For example, the preliminary drying time may be determined according to a water content of the laundry and a drying efficiency of the laundry treating apparatus. In an embodiment, the primary drying time may be set according to empirical data such that the laundry may be substantially dried after the primary drying process.

S603, after the primary drying process, executing a secondary drying judgment step, and turning to S604.

S604, weighing to determine a second characteristic value representing the water content of the clothes, comparing the second characteristic value with a preset value, and judging whether the second characteristic value is smaller than the preset value.

In an embodiment, the first and second characteristic values indicative of the moisture content of the laundry may be obtained in a similar manner, for example, by weighing or inertia detection.

And S605, when the second characteristic value is larger than or equal to the preset value, determining the re-drying time according to the second characteristic value, drying the clothes according to the re-drying time, and then turning to S604 for re-drying judgment.

And S606, when the second characteristic value is judged to be smaller than the preset value, the drying can be determined to be finished.

For example, since the moisture content of the laundry has been greatly decreased or the laundry has been substantially dried after the primary drying process is completed, a drying time for completely drying may be more precisely determined as a re-drying time, and the laundry may be completely dried after the re-drying process. In an alternative embodiment, the re-drying process may be performed a plurality of times until the laundry is completely dried. Such an embodiment may ensure that the laundry does not waste energy due to over-drying. In an alternative embodiment, when the determined characteristic value representing the water content of the laundry is less than a preset value, it may be determined that drying is completed. After the drying is completed, the method provided in the embodiment may further include a cooling step (not shown).

Determining a primary drying time according to a first characteristic value, performing a primary drying process according to the primary drying time, determining a re-drying time according to a second characteristic value, and performing a re-drying process according to the re-drying time, wherein the drying process can be accurately controlled by controlling the drying process according to the drying time of the characteristic value.

In embodiments, the first characterizing value characterizing the water content of the laundry may be determined, for example, a first weighing value of the laundry may be weighed before the washing process; weighing the clothes to determine a second weighing value before the drying process; and calculating the difference value between the second weighing value and the first weighing value as the first characterization value. In an embodiment, the weighing value may be a value obtained by weighing the mass of the laundry, or a value obtained by detecting the moment of inertia of the laundry, and the two may be used interchangeably.

In an embodiment, determining the second characterizing value characterizing the water content of the laundry may include: weighing the clothes to determine a third weighing value after the primary drying process; and calculating the difference value between the third weighing value and the first weighing value as the second characterization value. In an embodiment, the weighing determining the third weighing value of the laundry may be performed after the primary drying process, or may be performed after the secondary drying process.

An exemplary inertia value determination process is as follows steps 1-4:

1. making the motor at speed omega_1setAnd stable operation.

2. Calculating the power W consumed by the drum in each rotation when the motor rotates at a certain speed₁。

3. Controlling the motor to accelerate to the set rotating speed omega_2setThis procedure requires that the number of drum revolutions be an integer and that the slave speed ω be calculated_1setTo a velocity omega_2setWork W consumed by the motor₂And recording the actual speed omega_1set、ω_2setAnd the number m of turns of the ascent process.

4. And (4) calculating the corresponding load inertia J according to the formula (1) according to the data measured in the step (3) and the step (4).

Fig. 7 is a flowchart of a control method of a laundry drying apparatus according to an example embodiment. As shown in fig. 7, the drying process may be performed and the drying efficiency of the laundry drying apparatus may be updated in an embodiment by the following steps, and in particular, may be performed by a washing and drying all-in-one machine.

And S701, starting a program, weighing the dried clothes to obtain a weighing value H1, and selecting a washing gear corresponding to the load according to the weighing value to perform main washing, rinsing and dewatering.

S702, after washing and dewatering are finished, load shaking is carried out, then wet clothes are weighed to obtain a weighing value H2, and the required primary drying time is determined according to the difference value (H2-H1) of the two weighing.

And S703, weighing the primarily dried clothes after the primary drying time is finished to obtain a weighing value H3.

S704, whether the difference value (H3-H1) is smaller than a preset weighing threshold value H' is judged.

And when the (H3-H1) is smaller than the preset weighing threshold H', turning to S706, and finishing drying.

And when the (H3-H1) is greater than or equal to the preset weighing threshold H', turning to S705, and adding the drying time delta H according to the drying time delta H correspondingly adjusted in the interval of the difference (H3-H1) to continue the drying process.

In an embodiment, the load amount corresponding to the weight value of the dry laundry before washing may determine the water amount, heating time, and main washing time of the main washing and rinsing. In an embodiment, the first and second characterizing values characterizing the moisture content of the laundry may be one of: clothes water content A, moment of inertia H, and mass M. The dehydrated wet laundry weight value H2 may be a rotational inertia value of the current load, which may have a mapping relationship M2 f (H2) with the mass M2 of the current load. The value H1 may be a rotational inertia value of the load before washing, and may have a mapping relationship M1 ═ f (H1) with the mass M1 of the load before washing, when a difference between the mass M2 of the load after dehydration and the mass M1 of the load before washing reflects the water content a of the load after dehydration, and the drying efficiency E of the laundry treatment apparatus reflects the mass of water that can be dried by the apparatus per unit time. Therefore, the primary drying time T0 can be determined using the difference and the drying efficiency E. Wherein T0 can be calculated from the following formulas (2) to (4):

T0＝A/E (2)

it can be derived that T0 ═ M2-M1)/E (3)

It can be derived that T0 ═ f (H2) -f (H1) ]/E (4)

Wherein, E is drying efficiency, which is determined by the rated power, washing capacity and drying capacity of the clothes treatment equipment, and the drying efficiency E also changes along with the change of the temperature and humidity of the environment. The mapping relation f is matched with the laundry treating apparatus, and different laundry treating apparatuses may have different mapping relations.

In an embodiment, the weighing value H3 obtained after the primary drying is finished is the moment of inertia of the load after the primary drying, and there may be a mapping relationship M3 ═ f (H3) with the mass M3 of the load after the primary drying, and the difference between the mass M3 of the load after the primary drying and the mass M1 of the load before the washing may reflect the moisture content a' after the primary drying. If the water content A 'is less than the preset value delta A, namely A' < delta A, the drying is considered to be finished, otherwise, the drying time can be added. In an alternative embodiment, the difference between H3 and H1 may be compared directly with the preset dry average value Δ H. If (H3-H1) < Δ H, it may be considered that the load has been substantially dried, otherwise, the drying time T' corresponding to Δ H may be added, and re-drying may be performed. Wherein the additional drying time can be calculated by the following formulas (5) to (7):

T’＝A’/E (5)

it can be derived that T ═ (M3-M1)/E (6)

It can be derived that T' ═ f (H3) -f (H1) ]/E (7)

In an embodiment, after additional drying, the dried clothes may be weighed again, a new weighing value may be given to H3, and then (H3-H1) may be compared with Δ H, and if the drying condition is not satisfied yet (e.g., (H3-H1) < Δ H), additional drying may be performed again. Thus, the whole drying process can be composed of two parts: primary drying process and additional drying process, wherein the additional drying process comprises all re-drying processes, and the total drying time is T0+ Tzj. Wherein Tzj is the sum of all the redrying time T'.

Preferably, the system drying efficiency E is adjusted according to one or more data of the total time, the pre-drying time T0, the additional drying time Tzj, and the number of redrying times, and it is determined whether the drying system is failed. Therefore, under different temperature and humidity environments or use habits, the drying time can be accurately pre-judged, and the drying times are reduced as much as possible on the premise of not excessively drying. In an embodiment, the primary drying time T0 may be determined according to a first characteristic value (e.g., water content) and the system drying efficiency E, and the secondary drying time T' may be determined according to a second characteristic value and the system drying efficiency E; after the drying process is completed, the system drying efficiency E may be adjusted according to the total drying time T0+ Tzj and the first characterization value. For example, the updated system drying efficiency may be determined by the following equation (8):

E＝[f(H2)-f(H1)]/[T0+Tzj] (8)

through the technical scheme, the drying time can be corrected according to the drying state of clothes, and meanwhile, the corrected time is adjusted by using the trunk judging result, so that the technical effects of accurate trunk judging, simple program, time saving and power saving are achieved.

In an embodiment, the laundry weight value may be determined by: performing inertia detection while the drum is rotating (e.g., at a second rotational speed) to obtain an inertia value; and determining a laundry weight value according to a mapping relationship between the inertia value and the laundry mass (e.g., M ═ f (I), where M is laundry mass, I is inertia value, and f is a mapping relationship associated with a laundry treatment apparatus). The relation can be formed by fitting according to the actual clothes weight and the weighing inertia value fed back by the motor, so that the deviation existing in the system is eliminated. As shown in fig. 8, a curve fitted by the weighing mass M and inertia Iv values of the 510-platform 12KG washing and drying integrated machine, the relationship of the following cubic polynomial exists between the mass M and inertia Iv values:

y＝-0.1432x³+2.2978x²+4.37x+8.6288 (9)

the fit curves of different kilogram segments have certain differences, especially when the weighing load is large. Wherein, the water quantity, the heating time and the main washing time of the main washing rinsing are determined by the load corresponding to the weighing of the dry cloth before washing. The difference value of the wet cloth weighing value after dehydration and the dry cloth weighing value before washing has a certain mapping relation with the water content of the load.

In another aspect of the embodiments of the present invention, a clothes drying apparatus is provided, fig. 9 is a block diagram of the components of the clothes drying apparatus provided by the embodiments of the present invention, and fig. 10 is a schematic structural diagram of the components of the clothes drying apparatus provided by the embodiments of the present invention. This is described in detail below in conjunction with fig. 9 and 10.

In an embodiment, the laundry drying apparatus may be a washing and drying all-in-one machine. The device can comprise a fan 8, a drying tunnel 9, an outer barrel 3, an inner barrel 4, a condenser 6, a controller 1, a humidity sensor 11, a motor 5 and a heating pipe 10 which are coupled with the controller 1, wherein a shell 13 is arranged in the shell 13, a door 2 can be arranged on the shell 13, and the inner barrel 4 is arranged in the outer barrel 3; the motor 5 is configured to drive the inner tub 4 to rotate; the humidity sensor 11 is disposed between the inner tub 4 and the outer tub 3 (e.g., an inner tub top of the outer tub 3), and is configured to detect a humidity value in the inner tub 4 during a drying process. Wherein, the air blown by the fan 8 is heated by the heating pipe 10 while passing through the drying tunnel 9, then the hot air enters the outer tub 3 and the inner tub 4 and becomes humid air after passing through the laundry to be dried, and then the humid air returns to the fan 8 through the condenser 6, thereby forming an air flow circulation.

In an embodiment, the laundry drying apparatus may include: a tub part (e.g., comprising an outer tub 3 and an inner tub 4) for containing laundry, a drying assembly (e.g., comprising a heating pipe 10, a blower 8, a drying tunnel 9, a condenser 6) for drying laundry, a controller assembly (e.g., comprising a controller 1, a humidity sensor 11, a condenser outlet NTC 7, an air outlet NTC 12) for controlling the operation of the drying assembly, wherein the drying assembly may comprise a heating pipe 10; the controller assembly may include a humidity sensor 11, a temperature sensor (7, 12) and a controller 1; the humidity sensor 11 may be configured to detect a humidity value in the laundry drying apparatus during a drying process; said temperature sensor 12 is configured to detect a dryness determination temperature value of said laundry drying apparatus; and the controller 1 is configured to: determining a weighing value of clothes to be dried; selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval; performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe; in the drying process, when the humidity value is smaller than a preset humidity threshold value, or when the dryness judging temperature value meets a preset judging condition, or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe, the drying is judged to be finished.

In an embodiment, the controller 1 may obtain a weighing result of the laundry to be dried from a weighing unit (not shown) to determine a weighing value (e.g., average a plurality of weighing results). In various embodiments, the controller 1 may determine the weighing value by the OOB value by performing the unbalance control OOB on the laundry treatment apparatus such as the laundry dryer (for example, determine the laundry mass by the inertia value according to the mapping relationship between the inertia value and the mass).

In an embodiment, the drying condition is associated with a drying efficiency of the laundry drying apparatus, and the controller 1 may be further configured to: setting drying parameters of the drying gear according to the clothes weighing value and the drying efficiency; and after drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value.

In an embodiment, the controller 1 may be configured to: executing inertia detection when the roller rotates to obtain an inertia value; and determining the laundry weight value according to a mapping relationship between the inertia value and the laundry mass.

In an embodiment, the controller 1 may be configured to: executing inertia detection when the roller rotates at a second rotating speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time, wherein the third rotation speed is different from the second rotation speed; after the preset time, controlling the drum to rotate at the second rotating speed and performing inertia detection again; and repeatedly executing the steps, and when inertia detection is executed for a preset number of times, calculating an average value of the obtained plurality of first inertia values to serve as the inertia value.

In an embodiment, the controller 1 may be configured to: performing inertia detection at least twice while rotating the drum at a second rotational speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time between each inertia detection, wherein the third rotation speed is different from the second rotation speed; and calculating the average value of the obtained at least two first inertia values as the inertia value.

In an embodiment, the controller 1 may be configured to: and performing inertia detection twice to obtain two inertia values, wherein when the difference value between the two inertia values is larger than a preset value, the obtained inertia value is the inertia value, and otherwise, the average value of the two inertia values is used as the inertia value.

In an embodiment, the controller 1 may be configured to: when the inertia detection is performed for the preset times, calculating a difference value between every two first inertia values in the plurality of first inertia values, and when the calculated difference value has a difference value larger than a preset difference value, taking the last first inertia value obtained by performing the inertia detection as the inertia value; and when the difference value which is larger than the preset difference value does not exist in the calculated difference values, calculating an average value of the obtained plurality of first inertia values as the inertia value.

In an embodiment, the controller 1 may be configured to: performing roller eccentricity judgment at a first rotating speed, and determining whether an eccentricity value is smaller than a preset eccentricity value; and when the determined eccentricity value is smaller than the preset eccentricity value, executing inertia detection at a second rotating speed to obtain the inertia value.

In an embodiment, the controller 1 may be configured to repeatedly perform the eccentricity determination when the determined eccentricity value is greater than or equal to the preset eccentricity value.

In an embodiment, the controller 1 may be configured to: and when the eccentricity judgment is performed for a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value, setting the inertia value as a preset inertia value.

In an embodiment, the temperature sensor is further configured to detect a start-stop temperature value of the laundry drying apparatus during the drying process; and the controller is configured to control the heating pipe to be switched on or switched off according to the start-stop temperature value.

In an embodiment, the temperature sensors may include a first temperature sensor 14 (e.g., the air outlet NTC 12) and a second temperature sensor 15 (e.g., the condenser outlet NTC 7). The two temperature sensors may be respectively configured to detect a drying temperature value at a condenser air outlet of the laundry drying appliance and a start-stop temperature value at a drying tunnel air outlet of the laundry drying appliance.

As shown in fig. 9, the laundry drying apparatus may comprise a first temperature sensor 14 (e.g. an air outlet NTC 12) coupled with the controller 1, wherein the first temperature sensor 14 may be configured to detect a temperature value of a drying tunnel air outlet of the laundry drying apparatus as a start-stop temperature value during the drying process. In an embodiment, the controller 1 may be configured to: setting a conduction threshold and a closing threshold of the heating pipe 10; and conducting the heating pipe 10 when the start-stop temperature value is smaller than a conduction threshold value, and closing the heating pipe 10 when the start-stop temperature value is larger than a closing threshold value, wherein the conduction threshold value is smaller than the closing threshold value.

As shown in fig. 9, the laundry drying apparatus may further comprise a second temperature sensor 15 (e.g. a condenser outlet NTC 7) coupled with the controller 1, wherein the second temperature sensor 15 may be configured to detect a temperature value of the condenser outlet air during said drying process as an arbitration temperature value. In an embodiment, the controller 1 may be configured to: when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, judging that the drying is finished; or when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, the drying is judged to be finished.

According to the clothes drying equipment and the control method provided by the embodiment of the invention, after drying is started, the size of the load is judged firstly, the corresponding drying gear is selected, and whether drying is finished or not is judged according to the temperature and humidity sensors, so that the drying accuracy is increased, the clothes drying can be stopped immediately, the energy consumption is saved, and meanwhile, the clothes can be protected.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.

Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a (may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims (11)

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

determining a weighing value of clothes to be dried;

selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval;

performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe;

detecting a humidity value and a dryness judging temperature value in the clothes drying equipment in the drying process, and judging that the drying is finished when the humidity value is smaller than a preset humidity threshold value or when the dryness judging temperature value meets a preset judging condition or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe;

executing inertia detection during rotation of the drum to obtain an inertia value, and determining a clothes weighing value according to a mapping relation between the inertia value and the clothes mass;

the step of performing inertia detection during rotation of the drum to obtain an inertia value comprises: performing inertia detection at least twice while rotating the drum at a second rotational speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time between each inertia detection, wherein the third rotation speed is different from the second rotation speed; calculating an average value of the obtained at least two first inertia values as the inertia value;

the method comprises the following steps:

and performing inertia detection twice to obtain two first inertia values, wherein when the difference value between the two first inertia values is larger than a preset value, the obtained first inertia value is the inertia value, and otherwise, the average value of the two first inertia values is taken as the inertia value.

2. The method of claim 1, wherein the drying parameter is associated with a drying efficiency of the laundry drying appliance, the method comprising:

setting drying parameters of the drying gear according to the clothes weighing value and the drying efficiency; and

and after the drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value.

3. The method of claim 1, further comprising, prior to performing the inertia detection:

performing roller eccentricity judgment at a first rotating speed, and determining whether an eccentricity value is smaller than a preset eccentricity value;

when the determined eccentricity value is smaller than the preset eccentricity value, executing inertia detection at a second rotating speed to obtain the inertia value, and when the determined eccentricity value is larger than or equal to the preset eccentricity value, repeatedly executing eccentricity judgment;

and when the eccentricity judgment is performed for a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value, setting the inertia value as a preset inertia value.

4. A method according to claim 1 or 2, characterized in that the method comprises:

detecting a start-stop temperature value of the clothes drying equipment in the drying process, controlling a heating pipe to be switched on or off according to the start-stop temperature value, detecting a drying judgment temperature value at an air outlet of a condenser of the clothes drying equipment, detecting the start-stop temperature value at an air outlet of a drying tunnel of the clothes drying equipment, and controlling the heating pipe to be switched on or off according to the start-stop temperature value comprises the following steps:

setting a conduction threshold and a closing threshold of the heating pipe; and

and when the start-stop temperature value is smaller than the conduction threshold value, conducting the heating pipe, and when the start-stop temperature value is larger than the shutdown threshold value, shutting down the heating pipe, wherein the conduction threshold value is smaller than the shutdown threshold value.

5. A method according to claim 1 or 2, characterized in that the method comprises:

detecting a temperature value of a condenser air outlet of the clothes drying equipment as the drying judgment temperature value in the drying process; and

when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, judging that the drying is finished; or

And when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, judging that the drying is finished.

6. A clothes drying apparatus, characterized in that the apparatus comprises:

a tub for containing laundry, a drying assembly for drying the laundry, a controller assembly for controlling operation of the drying assembly, wherein,

the drying component comprises a heating pipe; the controller assembly comprises a humidity sensor, a temperature sensor and a controller;

the humidity sensor is configured to detect a humidity value in the laundry drying apparatus during a drying process; the temperature sensor is configured to detect a dryness determination temperature value of the laundry drying apparatus; and

the controller is configured to:

determining a weighing value of clothes to be dried;

selecting a drying gear from a plurality of drying gears according to the clothes weighing value, wherein each drying gear corresponds to a clothes weighing value interval;

performing a drying process according to drying parameters corresponding to the selected drying gear, wherein the drying parameters comprise the maximum conduction time of a heating pipe;

in the drying process, when the humidity value is smaller than a preset humidity threshold value, or when the dryness judging temperature value meets a preset judging condition, or when the conduction time of the heating pipe reaches the maximum conduction time of the heating pipe, the drying is judged to be finished;

executing inertia detection during rotation of the drum to obtain an inertia value, and determining a clothes weighing value according to a mapping relation between the inertia value and the clothes mass;

the controller is configured to: performing inertia detection at least twice while rotating the drum at a second rotational speed to obtain a first inertia value; controlling the drum to rotate at a third rotation speed for a predetermined time between each inertia detection, wherein the third rotation speed is different from the second rotation speed; calculating an average value of the obtained at least two first inertia values as the inertia value;

the controller is configured to:

and performing inertia detection twice to obtain two first inertia values, wherein when the difference value between the two first inertia values is larger than a preset value, the obtained first inertia value is the inertia value, and otherwise, the average value of the two first inertia values is taken as the inertia value.

7. The apparatus of claim 6, wherein the drying parameter is associated with a drying efficiency of the laundry drying apparatus, the controller being further configured to:

setting drying parameters of the drying gear according to the clothes weighing value and the drying efficiency; and

and after the drying is finished, updating the drying efficiency according to at least one of the actual drying process time and the actual heating pipe conduction time and the clothes weighing value.

8. The apparatus of claim 6, wherein the controller is configured to:

performing roller eccentricity judgment at a first rotating speed, and determining whether an eccentricity value is smaller than a preset eccentricity value;

when the determined eccentricity value is smaller than the preset eccentricity value, executing inertia detection at a second rotating speed to obtain the inertia value, and when the determined eccentricity value is larger than or equal to the preset eccentricity value, repeatedly executing eccentricity judgment;

and when the eccentricity judgment is performed for a predetermined number of times and the determined eccentricity value is still greater than or equal to the preset eccentricity value, setting the inertia value as a preset inertia value.

9. The apparatus of claim 6 or 7, wherein the temperature sensor is further configured to detect a start-stop temperature value of the laundry drying apparatus during the drying process; and

the controller is configured to control the heating pipe to be switched on or off according to the start-stop temperature value;

the temperature sensor is configured to detect the drying temperature value at a condenser air outlet of the laundry drying appliance and the start-stop temperature value at a drying tunnel air outlet of the laundry drying appliance;

the controller is configured to:

setting a conduction threshold and a closing threshold of the heating pipe; and

and when the start-stop temperature value is smaller than the conduction threshold value, conducting the heating pipe, and when the start-stop temperature value is larger than the shutdown threshold value, shutting down the heating pipe, wherein the conduction threshold value is smaller than the shutdown threshold value.

10. The apparatus of claim 6 or 7, wherein the temperature sensor is configured to detect a temperature value of a condenser air outlet of the laundry drying apparatus during the drying process as the dryness determination temperature value; and

the controller is configured to:

when the absolute value of the difference value between the current temperature value and the inflection point temperature value is greater than a preset temperature threshold after the inflection point appears in the temperature value, judging that the drying is finished; or

And when the absolute value of the difference value between the current temperature value and the maximum value of the temperature value is greater than the preset temperature threshold value, judging that the drying is finished.

11. An apparatus according to claim 6 or 7, characterized in that it is a washing and drying machine.

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