Drying temperature control method and device of household appliance, household appliance and medium

Abstract

The invention relates to a drying temperature control method and device for a household appliance, the household appliance and a medium, and the method comprises the steps: obtaining a gas temperature value of a gas channel of the household appliance when the household appliance is in a stable operation stage; and adjusting information of the heating component is determined according to the gas temperature value, so that the temperature value of the household appliance entering the containing device is within a preset temperature range. According to the technical scheme, the accuracy and stability of drying temperature control are achieved, and the reliability of drying judgment is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of drying device control, and in particular to a drying temperature control method and device for a household appliance, a household appliance, and a medium. Background Art

[0002] As people's living standards improve, their lifestyles are constantly changing, and they are no longer satisfied with the basic functions of consumer goods. For the washing machine industry, fully automatic washing machines that can dry clothes after washing are especially suitable for humid weather, and therefore are becoming more and more popular among consumers.

[0003] At present, the existing drying device is in the drying process, such as Figure 1 As shown, the temperature of the inlet accommodating device is controlled within a set range. For example, the temperature of the inlet accommodating device is set to 70-80 degrees. Due to the hysteresis of temperature control, this will cause the actual temperature of the inlet accommodating device to fluctuate greatly. When the temperature is too high, the temperature of the inlet accommodating device will be too high for a short time, the material of the clothing will be damaged or the aging of the structural parts will be accelerated, and the possibility of misjudgment of drying will also increase. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a drying temperature control method, device, household appliance and medium for household appliances, which are used to achieve accuracy and stability of drying temperature control and improve the reliability of drying judgment.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for controlling the drying temperature of a household appliance is provided, wherein the household appliance comprises a receiving device for receiving an object to be dried, a drying device, and a gas passage connecting the receiving device and the drying device, wherein the drying device comprises a heating component and a moisture absorption and dehumidification component, wherein the heating component is arranged corresponding to at least a part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, and the method comprises:

[0006] When the household appliance is in a stable operation stage, obtaining a gas temperature value of a gas channel of the household appliance;

[0007] The adjustment information of the heating component is determined according to the gas temperature value so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

[0008] In one embodiment, optionally, the method further comprises:

[0009] The temperature value entering the accommodating device includes at least one of the following: an actual temperature value entering the accommodating device and a fluctuation value of the actual temperature value entering the accommodating device, wherein the preset temperature range corresponding to the actual temperature value entering the accommodating device is a first preset temperature range, and the preset temperature range corresponding to the fluctuation value of the actual temperature value entering the accommodating device is a second preset temperature range, and the second preset temperature range is 0°C-5°C.

[0010] In one embodiment, optionally, the method further comprises:

[0011] The temperature value of the outlet of the accommodating device of the household appliance is obtained, and the temperature value of the outlet of the accommodating device is input into the deviation adjustment module to output the adjustment information of the heating component.

[0012] In one embodiment, optionally, determining the adjustment information of the heating component according to the gas temperature value includes:

[0013] Obtaining an actual inlet containment device temperature value and an inlet containment device temperature setting value;

[0014] According to the difference between the actual inlet temperature value and the inlet temperature setting value, determining the adjustment information of the heating component through the deviation adjustment module, wherein the adjustment information includes the power of the heating component;

[0015] The heating component is controlled according to the adjustment information so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

[0016] In one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is configured as follows:

[0017] Calculating a proportional control term and an integral control term based on a difference between the actual inlet accommodation device temperature value and the inlet accommodation device temperature setting value;

[0018] Calculating a corresponding output value according to the proportional control term and the integral control term;

[0019] The output value is converted into adjustment information of the heating component of the drying device.

[0020] In one embodiment, optionally, the operation phases of the drying device include a heating operation phase, a steady operation phase, and a cooling operation phase, and the method further includes:

[0021] Obtaining the total duration of the drying device in the temperature rising operation stage;

[0022] When the total drying time reaches the preset drying time, the drying device is controlled to enter a stable drying operation stage; or

[0023] In the temperature rising operation stage, determining a first change amount of the adjustment information;

[0024] When the first change amount is less than a first preset change amount, the drying device is controlled to enter a drying stable operation stage.

[0025] In one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is further configured as follows:

[0026] Determine a second change in the difference between the actual inlet temperature value and the outlet temperature value within a preset time period from the current time;

[0027] When the second change amount is greater than a second preset change amount, the drying device is controlled to enter a cooling operation phase, and the heating component is turned off.

[0028] According to a second aspect of the embodiments of the present disclosure, a drying temperature control device for a household appliance is provided.

[0029] The household appliance comprises a receiving device for receiving an object to be dried, a drying device and a gas passage connecting the receiving device and the drying device, the drying device comprises a heating component and a moisture absorption and dehumidification component, the heating component is arranged corresponding to at least part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, and is characterized in that the drying temperature control device comprises:

[0030] an acquisition module, used for acquiring a gas temperature value of a gas channel of the household appliance when the household appliance is in a stable operation stage;

[0031] The regulating module is used to determine the regulating information of the heating component according to the gas temperature value so that the temperature value of the household appliance inlet receiving device is within a preset temperature range.

[0032] According to a third aspect of an embodiment of the present disclosure, there is provided a home appliance, comprising: at least one processor; and a memory communicatively connected to the at least one processor;

[0033] The memory stores instructions executable by the at least one processor, and the instructions are configured to execute the method described in any one of the embodiments of the first aspect.

[0034] According to a fourth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium on which computer instructions are stored. When the instructions are executed by a processor, the steps of the method described in any one of the embodiments of the first aspect are implemented.

[0035] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0036] In the present invention, when the household appliance is in a stable operation stage, the gas temperature value of the gas passage of the household appliance is obtained; the adjustment information of the heating component is determined according to the gas temperature value, so that the temperature value of the household appliance inlet receiving device is within a preset temperature range. In this way, the temperature value of the inlet receiving device is within the preset temperature range according to the gas temperature value of the gas passage, thereby achieving the accuracy and stability of the drying temperature control, and greatly ensuring the stability of the system.

[0037] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0039] Figure 1 It is a schematic diagram of the temperature control curve in the related art.

[0040] Figures 2A to 3 It is a schematic structural diagram of a washer-dryer according to an exemplary embodiment.

[0041] Figure 4 The present invention is a flow chart showing a method for controlling the drying temperature of a household appliance according to an exemplary embodiment.

[0042] Figure 5 The figure is a schematic diagram of a temperature control curve of a drying temperature control method for a household appliance according to an exemplary embodiment.

[0043] Figure 6 The present invention is a flow chart showing another method for controlling the drying temperature of a household appliance according to an exemplary embodiment.

[0044] Figure 7 The present invention is a flow chart showing another method for controlling the drying temperature of a household appliance according to an exemplary embodiment.

[0045] Figure 8 The present invention is a flow chart showing another method for controlling the drying temperature of a household appliance according to an exemplary embodiment.

[0046] Fig. 9 The present invention is a block diagram of a drying temperature control device for a household appliance according to an exemplary embodiment. DETAILED DESCRIPTION

[0047] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0048] The embodiment of the present disclosure provides a possible application scenario, which includes a clothes processing device, a dishwasher, etc. Taking the clothes processing device as an example, Figure 2A As shown, the clothing treatment device includes a storage device for storing objects to be dried, a drying device, and an air passage connecting the storage device and the drying device. The drying device includes a heating component and a moisture absorption and dehumidification component 200. The heating component is arranged corresponding to at least part of the moisture absorption and dehumidification component 200 to transfer heat to the moisture absorption and dehumidification component 200. The moisture absorption and dehumidification component 200 is used to absorb moisture from the wet circulating airflow in the storage device, so that the wet circulating airflow becomes a relatively dry circulating airflow. The dry circulating airflow enters the storage device through the air inlet of the storage device (i.e., the drum), fully contacts with the clothing, improves the drying efficiency, and reduces energy consumption. In order to make the moisture absorption and dehumidification component continuously and repeatedly used, the moisture absorbed on the moisture absorption and dehumidification component is discharged by a regeneration component. The regeneration component can be, for example, a heating component or an ultrasonic component, etc., and the moisture absorbed on the moisture absorption and dehumidification component is removed by heating or ultrasonic dehumidification.

[0049] In one embodiment, the clothing processing device further includes: a circulation module 10 and a regeneration module 30. The circulation module 10 has a first circulation path, which is connected to the drum air outlet so that the wet circulating airflow in the drum enters the first circulation path; the regeneration module 30 includes a regeneration component, which is arranged adjacent to at least another part of the moisture absorption and dehumidification component, and the regeneration component is used to at least partially discharge the moisture adsorbed on the at least another part of the moisture absorption and dehumidification component. The circulation module 10 may include a circulation fan, the setting of the circulation fan can provide power for the wet circulating airflow, which is conducive to the circulation of the airflow, the air inlet of the circulation fan is connected to the drum air outlet, and the air outlet of the circulation fan is connected to the second circulation path.

[0050] In some embodiments, the moisture absorption and dehumidification component is located upstream of the circulation module, the second circulation passage is connected to the drum air outlet, and the moisture absorption and dehumidification component can first absorb moisture from the wet circulating airflow in the drum; the first circulation passage is connected to the drum air inlet, so that the relatively dry circulating airflow in the first circulation passage can enter the drum; the drum air outlet, the second circulation passage, the first circulation passage and the drum air inlet are connected in sequence to form a circulation passage.

[0051] In some embodiments, the drying device further comprises a condensation module 40, which may specifically comprise a condenser 401, which is arranged on the regeneration passage, and which may be arranged between the moisture absorption and dehumidification component 200 and the regeneration fan 301. In one embodiment, the condenser is located downstream of the moisture absorption and dehumidification component 200, and the condenser is located upstream of the regeneration fan 301, so that the hot and humid regeneration airflow in the regeneration passage enters the condenser 401, becomes a dry and cold regeneration airflow and enters the regeneration fan 301, and the regeneration airflow forms a closed loop. When the moisture absorption and dehumidification component 200 rotates to the regeneration passage, the regeneration airflow heats the moisture absorption and dehumidification component 200 of this part, so that the moisture in this part evaporates and detaches quickly, and is taken away by the regeneration airflow, and at this time the regeneration airflow becomes a hot and humid regeneration airflow and enters the condenser 401; so that the moisture absorption and dehumidification component 200 always has a good water absorption capacity, and further improves the moisture absorption efficiency and effect of the moisture absorption and dehumidification component 200. In an exemplary embodiment, the hot and humid regeneration airflow enters the condenser 401 for heat exchange and cooling, the water vapor in the regeneration airflow is cooled to form condensed water and discharged from the condenser 401, and the dry low-temperature regeneration airflow enters the regeneration fan 301 for the next cycle. In an optional embodiment, the hot and humid regeneration airflow enters the condenser 401 for heat exchange and cooling, the water vapor in the regeneration airflow is cooled to form condensed water and discharged from the condenser 401, and the dry low-temperature regeneration airflow can be discharged into the atmosphere through the air outlet of the condenser 401 to avoid adverse effects on the atmospheric temperature and humidity of the space where the washer-dryer is located; therefore, the regeneration airflow can form an open cycle.

[0052] The moisture absorption and dehumidification component 200 is provided with a moisture absorbent for absorbing moisture. The moisture absorbent may be, for example, zeolite, modified / synthetic zeolite, molecular sieve (including but not limited to zeolite molecular sieve, A / X / Y type molecular sieve, ZSM molecular sieve, Beta molecular sieve, etc.), polymer moisture absorbent, alkali metal aluminosilicate (13X molecular sieve), lithium chloride, silica gel, modified silica gel, activated alumina, and other materials with moisture absorption properties. Among them, the polymer moisture absorbent is also called a polymer adsorbent, which has a lower regeneration temperature than traditional silica gel, activated carbon, and molecular sieve adsorbents.

[0053] In one embodiment, the moisture absorption and dehumidification component 200 can be made of porous materials such as zeolite, molecular sieve, metal organic framework (MOF) material, covalent organic framework (COFs), nano carbon, silicon dioxide, etc. In one embodiment, the moisture absorption and dehumidification component 200 can also be formed by granular solid or particle filling including at least one of the above porous materials.

[0054] In one embodiment, the moisture absorption and dehumidification component 200 may be a honeycomb or corrugated rotating disk carrying a desiccant, which can adsorb and desorb / desorb the absorbed water vapor to achieve repeated desorption and regeneration.

[0055] In one embodiment, the moisture absorption and dehumidification component 200 includes an inorganic / organic fiber carrier (such as ceramic, glass fiber, MOFs, COFs, cordierite, etc.), and the fiber carrier is coated with a moisture absorbent such as a molecular sieve, and the molecular sieve is evenly distributed between the fiber carriers and on the surface of the fiber carrier to achieve the adsorption of airflow moisture. The molecular sieve may include single crystal molecular sieves or mixed crystal molecular sieves such as A-type molecular sieve, X / Y-type molecular sieve, ZSM molecular sieve, and Beta molecular sieve.

[0056] like Figure 2BAs shown, in some embodiments, the moisture absorption and dehumidification component includes a moisture absorption and dehumidification component 200; the regeneration component is a heating component; the regeneration module has a regeneration passage, and the heating component and the moisture absorption and dehumidification component are sequentially arranged on the regeneration passage, so that the regeneration airflow in the regeneration passage flows through the heating component and the moisture absorption and dehumidification component in sequence, and becomes a humid and hot regeneration airflow. Specifically, the moisture absorption and dehumidification component may include a moisture absorption and dehumidification component 200 and a driving component, and the driving component may include a motor, and the motor may drive the moisture absorption and dehumidification component 200 to rotate. The moisture absorption and dehumidification component 200 can be made of a material with good moisture absorption performance, such as zeolite, lithium chloride, silica gel, modified silica gel or 13X (sodium X type) molecular sieve. The heating component is arranged on the regeneration passage, for example, the heating component may include a heater, so the regeneration airflow in the regeneration passage becomes a high-temperature regeneration airflow after being heated by the heater. In order to more efficiently dehydrate the moisture absorption and dehumidification component, the high-temperature regeneration airflow may pass through the portion of the moisture absorption and dehumidification component 200 located in the regeneration passage, so that when the moisture absorption and dehumidification component 200 rotates to the regeneration passage, the adsorbed moisture is continuously desorbed to keep the moisture absorption and dehumidification component 200 continuously and reusable. In some embodiments, the regeneration passage is relatively isolated from the circulation passage so that the regeneration airflow and the wet circulation airflow are not connected to each other. Since a part of the dehumidification component 200 is located in the regeneration passage and the other part is located in the circulation passage, the dehumidification component 200 continuously passes through the regeneration passage and the circulation passage during its continuous rotation; in an exemplary embodiment, when a part of the dehumidification component 200 rotates into the regeneration passage, the high-temperature regeneration airflow can pass through the dehumidification component 200 from top to bottom to achieve efficient desorption of the dehumidification component; when the other part of the dehumidification component 200 rotates into the circulation passage, the wet circulating airflow can pass through the dehumidification component 200 from bottom to top, and the dehumidification component 200 can fully absorb the moisture in the wet circulating airflow; the regeneration airflow and the wet circulating airflow act on the dehumidification component 200 at the same time. In order to maintain the smooth rotation of the dehumidification component 200, the flow directions of the regeneration airflow and the wet circulating airflow can be set to be relative. By arranging partitions and seals on the upper shell 210 and the lower shell 220 of the dehumidification component, the dehumidification component 200 can achieve a dynamic sealing effect during rotation, thereby minimizing the mutual communication between the wet circulating airflow and the regeneration airflow. This is beneficial for the dehumidification component 200 to continuously adsorb and desorb moisture during rotation, so that the dehumidification component 200 always has a good water absorption capacity, thereby improving the efficiency and effect of moisture absorption.

[0057] In some embodiments, the regeneration module further includes a regeneration fan 301, which is disposed on the regeneration passage and upstream of the heating component. The regeneration fan 301 can provide power for the regeneration airflow, which is beneficial to the circulation of the airflow and improves efficiency.

[0058] In some embodiments, the regeneration module further includes a regeneration module upper shell, the regeneration module upper shell has a heating component accommodating chamber; the heating component is installed in the heating component accommodating chamber, the heating component is located above the moisture absorption and dehumidification component, and the heating component accommodating chamber is in fluid communication with the moisture absorption and dehumidification component; the heating component is used to heat the regeneration airflow to at least partially desorb the moisture adsorbed by the moisture absorption and dehumidification component 200. Specifically, the regeneration module upper shell may include: a top wall and side walls protruding from the top wall to form a heating component accommodating chamber, and a base protruding outward along the side wall, and the base may be provided with a mounting hole, through which the base can be connected and fixed to the moisture absorption and dehumidification component upper shell 210.

[0059] In some embodiments, in order to heat the incoming regenerated air flow more evenly and dehumidify and dry the moisture absorption and dehumidification component 200 more evenly, a preferred solution is that the heating component includes a stacked air distribution component and a heater, and the heater is located between the air distribution component and the moisture absorption and dehumidification component 200; the regenerated air flow enters the heating component accommodating chamber, and passes through the air distribution component, the heater and the moisture absorption and dehumidification component 200 in sequence.

[0060] In some embodiments, Figure 3 As shown, the upper shell of the regeneration module is a fan-shaped structure; the outer arc side of the upper shell of the regeneration module is provided with a heater air inlet; there is a gap between the air distribution member and the top wall of the upper shell of the regeneration module to form a third air flow channel; there is a gap between the bottom surface of the moisture absorption and dehumidification component 200 and the inner wall of the regeneration zone of the lower shell 220 of the moisture absorption and dehumidification component to form a fourth air flow channel; the third air flow channel is connected with the heater air inlet, so that the regeneration airflow enters the third air flow channel through the heater air inlet, passes through the air distribution member and the heater, and reaches the fourth air flow channel from top to bottom, becoming a humid and hot regeneration airflow. The regeneration airflow enters the third air flow channel through the heater air inlet, and the air distribution member can make the regeneration airflow contact with the heater more evenly. The uniformly heated regeneration airflow desorbs moisture from the moisture absorption and dehumidification component 200 in the regeneration zone.

[0061] In some embodiments, in order to heat the incoming regeneration air flow more evenly and dehumidify the moisture of the moisture absorption and dehumidification component 200 more evenly, the heating component may include a stacked air distribution component and a heater, and the heater is located between the air distribution component and the moisture absorption and dehumidification component 200; the regeneration air flow enters the heating component accommodating chamber, and passes through the air distribution component, the heater and the moisture absorption and dehumidification component 200 in sequence.

[0062] In some embodiments, the upper shell of the regeneration module is in a fan-shaped structure; the outer arc side of the upper shell of the regeneration module is provided with a heater air inlet. In the embodiment of the present invention, the upper shell of the regeneration module can be in a fan-shaped structure; the upper shell of the regeneration module can also be an irregular structure, which is not limited here; the upper shell of the regeneration module is connected with the upper shell 210 of the moisture absorption and dehumidification component, so that the dehumidification zone and the regeneration zone are separated, that is, the wet circulating airflow in the dehumidification zone and the regeneration airflow in the regeneration zone can be kept isolated to a large extent.

[0063] In some embodiments, there is a gap between the wind equalizing member and the top wall of the upper shell of the regeneration module to form a third airflow channel; the third airflow channel is connected to the air inlet of the heater. There is a gap between the bottom surface of the moisture absorption and dehumidification component 200 and the inner wall of the regeneration zone of the moisture absorption and dehumidification component lower shell 220 to form a fourth airflow channel. The regeneration airflow enters the third airflow channel through the air inlet of the heater, and the wind equalizing member can make the regeneration airflow contact with the heater more evenly, and the uniformly heated regeneration airflow desorbs the moisture on the moisture absorption and dehumidification component 200 in the regeneration zone.

[0064] In some embodiments, the air distribution member includes an air distribution plate 330 and side plates protruding from the air distribution plate 330. The air distribution plate 330 and the side plates enclose a heater accommodation area, and the heater is arranged in the heater accommodation area. The air distribution plate 330 is fan-shaped, and air holes 331 are arranged at intervals on the air distribution plate 330. The arrangement of the air holes allows the regeneration airflow to enter the heater below more evenly.

[0065] In some embodiments, the heater includes a plurality of heating tubes 340 connected end to end, and the heating tubes 340 are spaced apart along the radial direction of the sector; the length of the heating tubes 340 is set substantially perpendicular to the radial direction of the sector. The heating tubes 340 are distributed in an S-shaped manner, so that the length of the heating tubes 340 in the heater accommodation area can be longer, so as to increase the contact area with the regeneration airflow, thereby achieving higher efficiency of heat exchange with the regeneration airflow.

[0066] In some embodiments, the air holes are arranged in rows, and the position of each row of air holes roughly corresponds to the position of the heating tube 340; the diameter of the air holes tends to decrease from the outer arc to the center of the circle along the radius of the fan. The heater air inlet is located on the outer arc side of the upper shell of the regeneration module, and the diameter of the air hole near the heater air inlet is greater than the diameter of the air hole far from the heater air inlet.

[0067] In some embodiments, the heating tube 340 is located below the air hole; and the axis of the heating tube 340 is offset from the center line of each row of air holes, and the center line of each row of air holes is closer to the heater air inlet than the axis of the heating tube 340. The heating tube 340 is located below the air hole, and the heating tube 340 is close to the air balancing plate 330, or in other words, it is close to the air balancing plate 330, so as not to form a large resistance to the regeneration airflow passing through the air hole; the heating tube 340 can be fixed to the air balancing plate 330 by a pipe clamp, and a certain gap can be set between the heating tube 340 and the air balancing plate 330 to allow the regeneration airflow to pass through. When the regeneration airflow blows in from the heater air inlet and blows inward along the radius direction of the fan, there will be a speed along the flow direction of the regeneration airflow. Therefore, setting a little offset on the center line of each row of air holes can allow the regeneration airflow passing through the air hole to face the heating tube 340, so as to achieve a higher heat exchange efficiency between the regeneration airflow and the heating tube 340.

[0068] In some embodiments, the upper shell of the regeneration module is in a fan-shaped structure; the side wall of the upper shell of the regeneration module is provided with a heater air inlet, and the side wall is arranged along the radial direction of the fan; wherein the direction in which the regeneration airflow enters the heating component accommodating chamber is arranged opposite to the rotation direction of the moisture absorption and dehumidification component 200. That is, the regeneration airflow is blown into the heater accommodating space from the direction of the fan-shaped regeneration module that is approximately perpendicular to the radius along or against the rotation direction of the moisture absorption and dehumidification component, so that the airflow can be heated more evenly by the heater.

[0069] In some embodiments, the heater includes a plurality of heating tubes 340 connected end to end, and the heating tubes 340 are spaced apart in the radial direction of the fan; the length of the heating tubes 340 is arranged parallel to the side wall opposite to the air inlet of the heater. Of course, the heating tubes 340 can also be arranged roughly along the radial direction of the heating film group, in which case the air inlet direction perpendicular to the radial direction is adopted to achieve better uniform airflow and heating effect.

[0070] In some embodiments, the regeneration module further includes: a heat conductor 350, which is installed in the second space, and the second space is connected to the heater accommodating area; a temperature detection module, which is used to detect the temperature of the heater accommodating area; the temperature detection module is installed in the third space, and the third space is a space formed by the heat conductor 350, and the third space is physically isolated from the second space by the heat conductor 350. The regeneration airflow is heated by the heater in the heater accommodating area to become a high-temperature regeneration airflow. Since the second space is connected to the heater accommodating area, the high-temperature regeneration airflow diffuses in the second space, so the temperature in the heater accommodating area can be known by detecting the temperature of the second space. The temperature detection module is installed in the third space, and the heat conductor 350 covers the temperature detection module. The heat conductor 350 transfers the heat received from the second space to the air in the third space. The temperature detection module detects the air temperature in the third space, and then measures the temperature of the regeneration airflow in the heater accommodating area connected to the second space. The heat conductor 350 can be made of a metal material that is easy to conduct heat, such as copper or aluminum. The heat conductor 350 receives the heat of the high-temperature regeneration airflow in the second space and conducts it to the temperature detection module in the third space, which can even out the heat conduction and make the temperature detected by the temperature detection module tend to be stable, thereby improving the accuracy of the detection result. This can avoid the temperature detection module directly detecting the regeneration airflow in the heater accommodating area. The regeneration airflow in the heater accommodating area may have turbulence or / turbulence, causing the detection result to jump frequently.

[0071] Figure 4 The present invention is a flow chart showing a method for controlling the drying temperature of a household appliance according to an exemplary embodiment.

[0072] like Figure 4 As shown, a drying temperature control method of a household appliance, the household appliance comprises a receiving device for receiving an object to be dried, a drying device and a gas passage connecting the receiving device and the drying device, the drying device comprises a heating component and a moisture absorption and dehumidification component, the heating component is arranged corresponding to at least part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, the drying temperature control method comprises:

[0073] Step S401, when the household appliance is in a stable operation stage, obtaining a gas temperature value of a gas channel of the household appliance;

[0074] The gas temperature value of the gas channel refers to the actual temperature value entering the gas channel. The gas temperature value can be obtained through a temperature detection module, etc. The temperature detection module can be a temperature and humidity sensor, etc.

[0075] Step S402: determining adjustment information of the heating component according to the gas temperature value, so that the temperature value of the household appliance inlet receiving device is within a preset temperature range.

[0076] In one embodiment, optionally, the method further comprises:

[0077] The temperature value entering the accommodating device includes at least one of the following: an actual temperature value entering the accommodating device and a fluctuation value of the actual temperature value entering the accommodating device, wherein the preset temperature range corresponding to the actual temperature value entering the accommodating device is a first preset temperature range, and the preset temperature range corresponding to the fluctuation value of the actual temperature value entering the accommodating device is a second preset temperature range, and the second preset temperature range is 0°C-5°C.

[0078] In this embodiment, the adjustment information of the heating component is determined by the gas temperature value, so that the actual temperature value of the household appliance entering the receiving device and / or the fluctuation value of the actual temperature value of the household appliance entering the receiving device are both within the corresponding preset temperature range. Specifically, for example, the preset temperature range corresponding to the actual temperature value of the household appliance entering the receiving device is a first preset temperature range, which may be 70-80 degrees, and the preset temperature range corresponding to the fluctuation value of the actual temperature value of the household appliance entering the receiving device is a second preset temperature range, which may be 0°C-5°C.

[0079] In one embodiment, optionally, determining the adjustment information of the heating component according to the gas temperature value includes:

[0080] Obtaining an actual inlet containment device temperature value and an inlet containment device temperature setting value;

[0081] According to the difference between the actual inlet temperature value and the inlet temperature setting value, determining the adjustment information of the heating component through the deviation adjustment module, wherein the adjustment information includes the power of the heating component;

[0082] In one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is configured as follows:

[0083] Calculating a proportional control term and an integral control term based on a difference between the actual inlet accommodation device temperature value and the inlet accommodation device temperature setting value;

[0084] Calculating a corresponding output value according to the proportional control term and the integral control term;

[0085] The output value is converted into adjustment information of the heating component of the drying device.

[0086] The P in the PI control algorithm stands for proportional control and the I stands for integral control. Proportional control cannot eliminate the residual error, but its control speed is very fast. Integral control can eliminate the residual error and the control is more precise, but the speed is very slow. Combining their advantages and disadvantages.

[0087] In this embodiment, the PI control algorithm can be implemented by a PI regulator. The PI regulator is a linear controller that forms a control deviation based on a given value and an actual output value, and forms a control quantity by linearly combining the proportion and integral of the deviation to control the controlled object. The formula can be expressed as:

[0088] u(t)=KP[e(t)+TIx∫0te(t)dt]

[0089] Among them, KP is the proportional coefficient, TI is the integral coefficient, and e(t) is the real-time error value.

[0090] Proportional regulation can respond to the deviation of the system in proportion. Once the system has a deviation, proportional regulation will immediately produce a regulating effect to reduce the deviation. A large proportional effect can speed up the regulation and reduce the error, but an excessively large proportion will reduce the stability of the system and even cause system instability.

[0091] Integral regulation can eliminate steady-state errors in the system and improve the error-free degree. Because there is an error, integral regulation is carried out until there is no difference, and then the integral regulation stops and the integral regulation outputs a constant value. The strength of the integral action depends on the integral time constant TI. The smaller the TI, the stronger the integral action. On the contrary, the larger the TI, the weaker the integral action. Adding integral regulation can reduce the stability of the system and slow down the dynamic response. The integral action is often combined with the other two regulation rules to form a PI regulator or a PID regulator.

[0092] In the present invention, the input value may be the difference between the actual inlet accommodation device temperature value and the inlet accommodation device temperature setting value, and the output value may be the adjustment information, which is output to the controller, and the controller then converts it into the adjustment power corresponding to the heater. Of course, the output value may also be the adjustment power directly, which is directly output to the heater to control it.

[0093] In this embodiment, the PI control algorithm is used to determine the adjustment information corresponding to the heating component of the drying device according to the difference between the actual temperature value entering the accommodating device and the set temperature value entering the accommodating device, and then the heating component is controlled according to the adjustment information, thereby ensuring the actual temperature value entering the accommodating device and / or the fluctuation value of the actual temperature value entering the accommodating device, ensuring the stability of the drying device system, and thus improving the reliability of the drying device dryness judgment.

[0094] Of course, in addition to adopting the PI control algorithm, the above technical solution can also be further expanded to adopt the PID control algorithm, that is, adding a differential link to amplify the deviation value in advance. That is, in the drying operation stage of the drying device, the actual temperature value of the inlet accommodating device and the preset temperature value of the inlet accommodating device of the drying device are obtained, and the adjustment information corresponding to the heating component of the drying device is determined by the PID control algorithm according to the difference between the actual temperature value of the inlet accommodating device and the preset temperature value of the inlet accommodating device, and the heating component is controlled according to the adjustment information so that the fluctuation value of the actual temperature value of the inlet accommodating device and the actual temperature value of the inlet accommodating device are within the preset temperature range. PI is suitable for most occasions, and PID is suitable for occasions with severe lag. However, in most cases, the same purpose can be achieved by adjusting the parameters of P, I, and D. In practical applications, it can be determined whether to use PI or PID based on parameters and processes.

[0095] like Figure 5 As shown, after the above technical solution of the present invention is used to control the heating component of the drying device, the temperature difference is basically controlled within 2°C, and the temperature of the outlet container is also relatively stable. Compared with the temperature control method of the prior art, the system has higher stability, and accordingly, the accuracy of judging whether the drying device has been dried will also be higher.

[0096] In one embodiment, optionally, the method further comprises:

[0097] The temperature value of the outlet of the accommodating device of the household appliance is obtained, and the temperature value of the outlet of the accommodating device is input into the deviation adjustment module to output the adjustment information of the heating component.

[0098] In this embodiment, the outlet temperature value of the household appliance can also be obtained, and PI control can be performed according to the outlet temperature value and the actual inlet temperature value, so as to determine the adjustment information of the heating component. Specifically, the proportional control term and the integral control term of the PI control algorithm can be calculated according to the difference between the outlet temperature value and the inlet temperature value;

[0099] Among them, the proportional control term can be calculated using the following calculation formula:

[0100] KP=PxE

[0101] Among them, the integral control term can be calculated using the following calculation formula:

[0102] Ki=Ki+ixE

[0103] Wherein, E represents the difference between the temperature value of the receiving device and the temperature value entering the receiving device.

[0104] According to the proportional control item and the integral control item, a corresponding output value is calculated; and the output value is converted into adjustment information corresponding to the heating component of the drying device.

[0105] In this embodiment, the drying-related electrical components are turned on at the beginning, the PI control-related parameters are initialized, the difference between the temperature value of the containing device and the temperature value of the inlet containing device is obtained, and then the proportional term Kp and the integral term Ki of PI are calculated, and then the output value Out of PI is calculated, and Out is converted into the power of the drying heating tube. The larger the value, the higher the power of the drying heating tube. This process continues when the operation is less than the set time. Of course, it can also continue throughout the entire drying stage.

[0106] Of course, in addition to adopting the PI control algorithm, the above technical solution can also be further expanded to adopt the PID control algorithm, that is, adding a differential link to amplify the deviation value in advance. That is, in the drying operation stage of the drying device, the difference between the temperature value of the outlet accommodating device and the temperature value of the inlet accommodating device of the drying device is obtained, and the adjustment information corresponding to the heating component of the drying device is determined by the PID control algorithm according to the difference between the temperature value of the outlet accommodating device and the temperature value of the inlet accommodating device, and the heating component is controlled according to the adjustment information so that the actual temperature value of the inlet accommodating device and the fluctuation value of the actual temperature value of the inlet accommodating device are within the preset temperature range. PI is suitable for most occasions, and PID is suitable for occasions with severe lag. However, in most cases, the same purpose can be achieved by adjusting the parameters of P, I, and D. In practical applications, it can be determined whether to use PI or PID based on parameters and processes.

[0107] like Figure 6 As shown, in one embodiment, optionally, the operation phases of the drying device include a heating operation phase, a stable operation phase and a cooling operation phase, and the method further includes:

[0108] Step S601, obtaining the total duration of the drying device in the temperature rising operation stage;

[0109] When the drying device starts drying, it will enter the temperature rising operation stage. During the temperature rising operation stage, the temperature value entering the containing device will continue to rise. The temperature value entering the containing device has a trend of continuously rising. From the beginning of entering the temperature rising operation stage, timing can be started to calculate the total duration of the temperature rising operation stage.

[0110] Correspondingly, users or manufacturers can also set the operating time of each stage. For example, if the user sets the drying time to 2 hours, the drying device can determine the duration of the heating operation stage corresponding to the drying time according to the preset time calculation rules. For example, the heating operation stage time corresponding to the 2-hour drying time is determined to be 20 minutes.

[0111] Step S602, when the total drying time reaches the preset drying time, controlling the drying device to enter a drying stable operation stage;

[0112] As in the above embodiment, when the total duration of the heating operation stage reaches the preset drying time, that is, when the total duration of the heating operation stage reaches 20 minutes, the drying stable operation stage can be entered, so as to determine when the drying is completed according to the state of the stable operation stage, enter the cooling stage, and turn off the heating equipment.

[0113] Of course, in addition to judging the steady drying operation stage based on the running time of the heating stage, it is also possible to determine when to enter the steady drying operation stage through changes in parameters, thereby further ensuring the accuracy of the judgment result.

[0114] like Figure 7 As shown, in one embodiment, optionally, the method further includes:

[0115] Step S701, in the temperature rising operation stage, determining a first change amount of the adjustment information;

[0116] During the temperature rise operation stage, the adjustment information will change continuously, and the change amount of the adjustment information can be determined according to the difference between the previous and the next adjustment information. If the first change amount of the adjustment information changes greatly, it means that the drying device is still in the temperature rise operation stage, so the temperature change is large. If the first change amount of the adjustment information is very small or even absent, it can be said that the temperature rise stage of the drying device has basically ended and has entered the stable drying operation stage.

[0117] Step S702: When the first change amount is less than a first preset change amount, the drying device is controlled to enter a drying stable operation stage.

[0118] In this embodiment, if the temperature rise operation stage is detected, the change amount of the adjustment information is less than the preset change amount, that is, the change amount of the adjustment information is very small, and the drying device can be controlled to enter the stable drying operation stage.

[0119] like Figure 8 As shown, in one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is further configured as:

[0120] Step S801, determining a second change amount of the difference between the actual inlet temperature value and the outlet temperature value within a preset time period from the current time;

[0121] Step S802: When the second variation is greater than a second preset variation, the drying device is controlled to enter a cooling operation phase, and the heating component is turned off.

[0122] In this embodiment, in the stable operation stage of drying, of course, it can also be the entire drying stage, the second variation of the difference between the actual inlet temperature value and the outlet temperature value of the accommodating device within the current preset time period, for example, within the last n minutes, is calculated. When not drying, the inlet temperature of the accommodating device is controlled to be constant, and the outlet temperature of the accommodating device is basically constant. When drying is about to begin, the outlet temperature of the accommodating device will change significantly. Therefore, it can be determined whether the second variation is greater than the second preset variation. When the second variation is greater than the second preset variation, it means that drying is completed, and the drying device is controlled to enter the cooling operation stage, and the heating component is turned off. After the temperature drops, the entire drying process ends.

[0123] Specifically, the second variation of the difference between the actual inlet temperature value and the outlet temperature value may be determined by calculating the variance.

[0124] Fig. 9 The present invention is a block diagram of a drying temperature control device for a household appliance according to an exemplary embodiment.

[0125] like Fig. 9 As shown, according to a second aspect of the embodiment of the present disclosure, a drying temperature control device of a household appliance is provided, the household appliance comprising a receiving device for receiving an object to be dried, a drying device, and a gas passage connecting the receiving device and the drying device, the drying device comprising a heating component and a moisture absorption and dehumidification component, the heating component is arranged corresponding to at least part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, and the device comprises:

[0126] An acquisition module 91 is used to acquire a gas temperature value of a gas channel of the household appliance when the household appliance is in a stable operation stage;

[0127] The regulating module 92 is used to determine the regulating information of the heating component according to the gas temperature value so that the temperature value of the household appliance inlet receiving device is within a preset temperature range.

[0128] In one embodiment, optionally, the temperature value entering the accommodating device includes at least one of the following: an actual temperature value entering the accommodating device and a fluctuation value of the actual temperature value entering the accommodating device, wherein the preset temperature range corresponding to the actual temperature value entering the accommodating device is a first preset temperature range, and the preset temperature range corresponding to the fluctuation value of the actual temperature value entering the accommodating device is a second preset temperature range, and the second preset temperature range is 0°C-5°C.

[0129] In one embodiment, optionally, the device further comprises:

[0130] The output module is used to obtain the temperature value of the outlet of the accommodating device of the household appliance, and input the temperature value of the outlet of the accommodating device to the deviation adjustment module to output the adjustment information of the heating component.

[0131] In one embodiment, optionally, the adjustment module is used to:

[0132] Obtaining an actual inlet containment device temperature value and an inlet containment device temperature setting value;

[0133] According to the difference between the actual inlet temperature value and the inlet temperature setting value, determining the adjustment information of the heating component through the deviation adjustment module, wherein the adjustment information includes the power of the heating component;

[0134] The heating component is controlled according to the adjustment information so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

[0135] In one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is configured as follows:

[0136] Calculating a proportional control term and an integral control term based on a difference between the actual inlet accommodation device temperature value and the inlet accommodation device temperature setting value;

[0137] Calculating a corresponding output value according to the proportional control term and the integral control term;

[0138] The output value is converted into adjustment information of the heating component of the drying device.

[0139] In one embodiment, optionally, the operation stages of the drying device include a heating operation stage, a steady operation stage and a cooling operation stage, and the device further includes:

[0140] A duration acquisition module, used to acquire the total duration of the drying device in the temperature rising operation stage;

[0141] A first control module is used to control the drying device to enter a stable drying operation stage when the total drying time reaches a preset drying time; or

[0142] A determination module, used for determining a first change amount of the adjustment information during the temperature rising operation phase;

[0143] The second control module is used to control the drying device to enter a stable drying operation stage when the first change amount is less than a first preset change amount.

[0144] In one embodiment, optionally, the deviation adjustment module includes a PI control algorithm unit, and the PI control algorithm unit is further configured as follows:

[0145] Determine a second change in the difference between the actual inlet temperature value and the outlet temperature value within a preset time period from the current time;

[0146] When the second change amount is greater than a second preset change amount, the drying device is controlled to enter a cooling operation phase, and the heating component is turned off.

[0147] According to a third aspect of an embodiment of the present disclosure, there is provided a home appliance, comprising: at least one processor; and a memory communicatively connected to the at least one processor;

[0148] The memory stores instructions executable by the at least one processor, and the instructions are configured to execute the method described in any one of the embodiments of the first aspect.

[0149] According to a fourth aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium on which computer instructions are stored. When the instructions are executed by a processor, a method as described in any one of the embodiments of the first aspect is implemented.

[0150] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0151] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0152] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0153] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0154] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for controlling the drying temperature of a household appliance, wherein the household appliance comprises a storage device for storing objects to be dried, a drying device, and a gas passage connecting the storage device and the drying device, wherein the drying device comprises a heating component and a moisture absorption and dehumidification component, wherein the heating component is arranged corresponding to at least a part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, wherein: The method comprises: When the household appliance is in a stable operation stage, obtaining a gas temperature value of a gas channel of the household appliance; The adjustment information of the heating component is determined according to the gas temperature value so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

2. The method according to claim 1, characterized in that The method further comprises: The temperature value entering the accommodating device includes at least one of the following: an actual temperature value entering the accommodating device and a fluctuation value of the actual temperature value entering the accommodating device, wherein the preset temperature range corresponding to the actual temperature value entering the accommodating device is a first preset temperature range, and the preset temperature range corresponding to the fluctuation value of the actual temperature value entering the accommodating device is a second preset temperature range, and the second preset temperature range is 0°C-5°C.

3. The method according to claim 1, characterized in that The method further comprises: The temperature value of the outlet of the accommodating device of the household appliance is obtained, and the temperature value of the outlet of the accommodating device is input into the deviation adjustment module to output the adjustment information of the heating component.

4. The method according to claim 1, characterized in that The step of determining the adjustment information of the heating component according to the gas temperature value comprises: Obtaining an actual inlet containment device temperature value and an inlet containment device temperature setting value; According to the difference between the actual inlet temperature value and the inlet temperature setting value, determining the adjustment information of the heating component through the deviation adjustment module, wherein the adjustment information includes the power of the heating component; The heating component is controlled according to the adjustment information so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

5. The method according to claim 4, characterized in that The deviation adjustment module includes a PI control algorithm part, and the PI control algorithm part is configured as follows: Calculating a proportional control term and an integral control term based on a difference between the actual inlet accommodation device temperature value and the inlet accommodation device temperature setting value; Calculating a corresponding output value according to the proportional control term and the integral control term; The output value is converted into adjustment information of the heating component of the drying device.

6. The method according to claim 1, characterized in that The operation stages of the drying device include a heating operation stage, a stable operation stage and a cooling operation stage, and the method further includes: Obtaining the total duration of the drying device in the temperature rising operation stage; When the total drying time reaches the preset drying time, the drying device is controlled to enter a stable drying operation stage; or In the temperature rising operation stage, determining a first change amount of the adjustment information; When the first change amount is less than a first preset change amount, the drying device is controlled to enter a drying stable operation stage.

7. The method according to claim 4, characterized in that The deviation adjustment module includes a PI control algorithm part, and the PI control algorithm part is further configured as follows: Determine a second change in the difference between the actual inlet temperature value and the outlet temperature value within a preset time period from the current time; When the second change amount is greater than a second preset change amount, the drying device is controlled to enter a cooling operation phase, and the heating component is turned off.

8. A drying temperature control device for a household appliance, the household appliance comprising a receiving device for receiving an object to be dried, a drying device, and a gas passage connecting the receiving device and the drying device, the drying device comprising a heating component and a moisture absorption and dehumidification component, the heating component being arranged corresponding to at least a part of the moisture absorption and dehumidification component to transfer heat to the moisture absorption and dehumidification component, characterized in that: The drying temperature control device comprises: an acquisition module, used for acquiring a gas temperature value of a gas channel of the household appliance when the household appliance is in a stable operation stage; The regulating module is used to determine the regulating information of the heating component according to the gas temperature value so that the temperature value of the household appliance inlet accommodating device is within a preset temperature range.

9. A household appliance, characterized in that: include: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores instructions executable by the at least one processor, wherein the instructions are configured to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the method according to any one of claims 1 to 7.

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