Heating control method, electronic equipment and clothes treatment equipment

Abstract

The invention relates to a heating control method, electronic equipment and clothes processing equipment in the technical field of clothes processing equipment. When a first temperature variable T1 of a temperature limiter is smaller than a temperature limiting threshold value Tj of the temperature limiter, and the difference value between the temperature limiting threshold value Tj of the temperature limiter and the first temperature variable T1 of the temperature limiter reaches a set value Td, the temperature limiter is started; whether a second temperature variable T2 of the heating object reaches a target heating temperature Ts or not is judged, if the second temperature variable T2 of the heating object does not reach the target heating temperature Ts, the heating program automatically enters a temperature compensation mode, and in the temperature compensation mode, the heating program assigns the second temperature variable T2 as T2 ', T2 lt; the heater can be effectively prevented from entering a high-temperature protection state frequently, the drying temperature fluctuation is small, the drying effect is stable, and the service life of the heater is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of clothes drying, and particularly to a heating control method, an electronic device and a clothes treatment device. Background Art

[0002] In the related technical field of clothes drying, at different ambient temperatures, for example, in cold weather, the heater needs a higher heating power to reach the target inlet air temperature, and the higher heating power is likely to cause the surface temperature of the heater to be too high, thus easily triggering the automatic disconnection of the temperature limiter. In hot weather, the opposite situation occurs, and the temperature limiter on the heater is not easily disconnected; For example, during the clothes drying process, the inlet air temperature sensor generally has a fixed preset temperature value. When the temperature limiter on the heater automatically disconnects due to the high surface temperature of the heater, and at this time the inlet air temperature sensor has not reached the preset temperature value, it will cause the temperature limiter to start and stop frequently, resulting in a shortened lifespan of the heater, poor drying and heating effects, and a long drying time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that during the clothes drying process, when the inlet air temperature sensor has not reached the preset temperature value, it will cause the temperature limiter to start and stop frequently, resulting in a shortened lifespan of the heater. The present invention provides a heating control method, an electronic device and a clothes treatment device.

[0004] The present invention aims to provide a heating control method for a clothes treatment device. The clothes treatment device includes a heater for providing electric heating to a heating object and a temperature limiter for limiting the temperature of the heater. The control method includes: Responding to a running instruction of a heating program, setting a target heating temperature Ts of the heating object; Starting the heater and continuously monitoring a first temperature variable T1 of the temperature limiter and a second temperature variable T2 of the heating object; When the absolute value of the difference between the first temperature variable T1 and the temperature limit threshold Tj of the temperature limiter is less than or equal to a set value △Td, determining whether the second temperature variable T2 reaches the target heating temperature; wherein, the first temperature variable T1 is a real-time temperature detection value of the temperature limiter during the heating process, the second temperature variable T2 is a real-time temperature detection value of the heating object during the heating process, and the temperature limit threshold Tj is a temperature threshold for triggering the temperature limiter to limit the temperature of the heater; If the second temperature variable T2 does not reach the target heating temperature, the heating program automatically enters a temperature compensation mode. In the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2', where T2 < T2' and T2' ≥ Ts.

[0005] In some embodiments, the heater is a heater for heating washing water or for heating the drying air flow; When the heater is a heater for heating washing water, the object to be heated is the washing water, and the second temperature variable T2 is the water temperature of the washing water.

[0006] When the heater is a heater for heating the drying air flow, the object to be heated is the drying air flow, and the second temperature variable T2 is the temperature of the drying air inlet that provides the drying air inlet to the treatment cylinder of the laundry treatment device.

[0007] In some embodiments, T2' = Ts.

[0008] In some embodiments, the heating program assigns the second temperature variable T2 to T2', including: Adding a compensation amount X to the value of the second temperature variable T2 and assigning the second temperature variable T2 to the target heating temperature Ts. The compensation amount is the difference between the target heating temperature and the second temperature variable T2 before temperature compensation, that is, X = Ts - T2.

[0009] In some embodiments, the heating program assigns the second temperature variable T2 to T2', including: Adding a compensation amount X to the value of the second temperature variable T2, and T2' after assigning the second temperature variable T2 is greater than the target heating temperature Ts. X = Ts - T2 + ΔT, where ΔT is a correction parameter.

[0010] In some embodiments, the heating program assigns the second temperature variable T2 to T2', including: Adding a compensation amount X to the value of the second temperature variable T2, and assigning the second temperature variable T2 to be greater than the target heating temperature Ts. X = k × (Ts - T2), where k is a correction coefficient, k > 1, and × represents multiplication.

[0011] In some embodiments, after executing the temperature compensation mode, the heating control method further includes: Judging whether the heater needs to continue working; Controlling the working state of the heater according to the judgment result of whether the heater needs to continue working; If it needs to continue working, controlling the heater to continue heating the object to be heated; If it does not need to continue working, stopping the heater from continuing to heat the object to be heated.

[0012] In some embodiments, when the heater is a heater for heating the drying air flow, the judgment of whether the heater needs to continue working includes: Continue to obtain the second temperature variable T2 of the heating object and obtain the third temperature variable T3 of the heating object; Determine whether to control the heater to continue working according to whether the difference between the second temperature variable T2 and the third temperature variable T3 of the heating object reaches a preset difference; wherein, the second temperature variable T2 is the drying inlet air temperature for providing drying inlet air into the treatment cylinder of the laundry treatment device, and the third temperature variable T3 is the drying outlet air temperature for providing drying inlet air into the treatment cylinder of the laundry treatment device; If the difference between the second temperature variable T2 and the third temperature variable T3 of the heating object is greater than or equal to the preset difference △Th, control the heater to continue working.

[0013] In some embodiments, an electronic device is provided, and the electronic device includes: A memory for storing computer instructions; A processor for calling and executing the computer instructions to implement the above heating control method.

[0014] In some embodiments, a laundry treatment device is provided, and the laundry treatment device uses the above heating control method or includes the above electronic device.

[0015] The solution provided by the present invention has the following beneficial effects compared with the prior art: In the heating control method, when the first temperature variable T1 of the thermostat is less than the temperature limit threshold Tj of the thermostat, and the difference between the temperature limit threshold Tj of the thermostat and the first temperature variable T1 of the thermostat reaches the set value △Td, it is judged whether the second temperature variable T2 of the heating object reaches the target heating temperature Ts. If the second temperature variable T2 of the heating object does not reach the target heating temperature Ts, the heating program automatically enters the temperature compensation mode. In the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2', where T2 < T2' and T2' ≥ Ts, which can effectively avoid the heater from frequently entering the high-temperature protection state, with small fluctuations in the drying temperature, stable drying effect, and extended service life of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings: Figure 1 is one of the flowcharts of the heating control method shown in the embodiments of the present invention; Figure 2It is the second flowchart of the heating control method shown in the embodiments of the present invention.

[0017] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0019] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "contact", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

[0020] During the clothing drying process, the air inlet temperature sensor generally has a fixed preset temperature value. The temperature limiter on the heater automatically disconnects due to the high surface temperature of the heater. At this time, if the air inlet temperature sensor has not reached the preset temperature value, it will cause the temperature limiter to start and stop frequently, resulting in a shortened lifespan of the heater, poor drying and heating effects, and a long drying time.

[0021] Based on this, the following embodiments are proposed.

[0022] Embodiment 1: As Figure 1 shown, this embodiment provides a heating control method for a clothing treatment device. The clothing treatment device includes a heater for providing electric heating to a heating object and a temperature limiter for temperature limiting protection of the heater. The control method includes: In response to the operation instruction of the heating program, set the target heating temperature Ts of the heating object; Start the heater and continuously monitor the first temperature variable T1 of the temperature limiter and the second temperature variable T2 of the heating object; When the absolute value of the difference between the first temperature variable T1 and the temperature limit threshold Tj of the thermostat is less than or equal to the set value △Td, it is determined whether the second temperature variable T2 reaches the target heating temperature; wherein, the first temperature variable T1 is the real-time temperature detection value of the thermostat during the heating process, the second temperature variable T2 is the real-time temperature detection value of the heating object during the heating process, and the temperature limit threshold Tj is the temperature threshold for triggering the thermostat to perform temperature limit protection on the heater. If the second temperature variable T2 does not reach the target heating temperature, the heating program automatically enters the temperature compensation mode. In the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2', where T2 < T2' and T2' ≥ Ts.

[0023] In this embodiment, the first and second in the first temperature variable T1 of the thermostat and the second temperature variable T2 of the heating object are only used to distinguish the two temperature variables, and it does not mean that the thermostat has a second variable and the heating object has a first variable. Specifically, the heater is a heater for heating washing water or heating drying air flow. When the heater is a heater for heating washing water, the heating object is washing water, and the second temperature variable T2 is the water temperature of the washing water.

[0024] When the heater is a heater for heating drying air flow, the heating object is drying air flow, and the second temperature variable T2 is the drying inlet air temperature for providing drying inlet air into the treatment cylinder of the clothing processing device.

[0025] The following takes the application of this heating control method in the clothing drying control method as an example for illustration. When the weather is hot, the inlet air temperature sensor module in the laundry treatment device recognizes that the heater temperature at the same temperature is lower than that in cold weather, so the temperature limiter is not easily disconnected. When the weather is cold, at the same temperature recognized by the inlet air temperature sensor module, the heater is easily disconnected. That is to say, under the condition that the temperature to be detected by the inlet air temperature sensor module is set to be the same in the program, affected by the ambient temperature, in cold weather, the temperature that the heater needs to heat is higher than the heating temperature of the heater in hot weather. Therefore, when executing this laundry control method, the user first sets a target heating temperature Ts at the initial stage, and then the heater starts to heat the drying air duct, and the first temperature variable T1 of the temperature limiter and the temperature of the inlet air temperature sensor module, that is, the second temperature variable T2 of the heating object, are detected in real time. Before the first temperature variable T1 of the temperature limiter reaches the temperature limit threshold Tj of the temperature limiter, the inlet air temperature sensor module measures the inlet air temperature in the drying air duct and judges whether the actual drying inlet air temperature measured in the drying air duct, that is, the second temperature variable T2 of the heating object, reaches the target heating temperature Ts, so as to determine whether to enter the temperature compensation mode according to the judgment result.

[0026] Specifically, assume that the temperature limit threshold of the temperature limiter is Tj, the actual drying inlet air temperature in the drying air duct is T2, and the target heating temperature set by the user is Ts. When the temperature of the temperature limiter reaches M (M = Tj - 1), the inlet air temperature sensor module judges whether the current actual drying inlet air temperature T2 reaches the target heating temperature Ts. At this time, if it is detected that the actual drying inlet air temperature T2 is greater than or equal to the target heating temperature Ts, it means that the actual drying inlet air temperature has reached the target heating temperature Ts. At this time, the drying efficiency of the laundry treatment device for the laundry is relatively high, and there is no need to additionally activate the temperature compensation mode to avoid increasing the additional energy consumption of the laundry treatment device; if it is detected that the actual drying inlet air temperature T2 is less than the target heating temperature Ts, it means that the actual drying inlet air temperature has not reached the target heating temperature Ts. When the laundry treatment device detects that the temperature of the temperature limiter of the heater reaches M (M = Tj - 1), but the actual drying inlet air temperature has not reached the target heating temperature Ts, the laundry treatment device determines to enter the temperature compensation mode and starts to execute it, so as to avoid frequent on-off of the heater to extend its service life, and at the same time ensure that the laundry treatment device can operate normally.

[0027] In this embodiment, the actual drying inlet air temperature is the temperature monitored by the inlet air temperature sensor in the drying air duct, and a certain error is allowed for this temperature. The error range is, for example, -5% to +5%.

[0028] In this embodiment, in the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2'. At this time, the thermostat of the heater has not reached the temperature limit, that is, the heater has not entered the high-temperature protection state and stopped working. Since the temperature compensation mode assigns the second temperature variable T2 to T2', the heater can enter the normal program to stop heating before reaching the temperature limit of the thermostat, which can effectively prevent the heater from frequently entering the high-temperature protection state, extend the service life of the heater, and have a relatively small impact on the drying effect.

[0029] When the inlet air temperature sensor module matches the temperature limit threshold Tj of the thermostat, the software program controls the laundry treatment device to automatically enter the temperature compensation mode. This can prevent the heater from frequently turning on and off due to the mismatch between the inlet air temperature sensor module and the temperature limit threshold Tj of the thermostat, resulting in the abnormal operation of the laundry treatment device. Thus, it not only extends the service life of the heater but also reduces the energy consumption of the laundry treatment device.

[0030] In this embodiment, the steps to achieve before the first temperature variable T1 of the thermostat reaches the temperature limit threshold Tj of the thermostat are as follows: Monitor the first temperature variable T1 of the thermostat. Since the temperature limit threshold Tj of the thermostat is fixed, calculate the difference between the temperature limit threshold Tj of the thermostat and the first temperature variable T1 of the thermostat, and compare the calculation result with the set value △Td. When the difference between the temperature limit and the first temperature variable T1 of the thermostat reaches the set value △Td, the laundry treatment device determines that the current state is before the first temperature variable T1 of the thermostat reaches its temperature limit value. At this time, the laundry treatment device starts to execute the subsequent steps.

[0031] Before the first temperature variable T1 of the thermostat reaches the temperature limit threshold Tj of the thermostat, the heater will continue to heat and will not stop working, and the actual drying inlet air temperature will also continue to rise. If the actual drying inlet air temperature is measured before the first temperature variable T1 of the thermostat reaches the temperature limit threshold Tj of the thermostat, it is very likely that the laundry treatment device will operate in the temperature compensation mode under unnecessary conditions, resulting in an increase in the energy consumption of the laundry treatment device. However, when measuring the actual drying inlet air temperature before the first temperature variable T1 of the thermostat reaches the temperature limit threshold Tj of the thermostat, that is, when it reaches the set value △Td, it can fully improve the utilization rate of the heat in the drying air duct, so as to shorten the time required to dry the clothes while avoiding an additional increase in the energy consumption of the laundry treatment device.

[0032] This laundry drying control method has the following advantages: I. Improve safety The traditional method to avoid frequent on-off of the heater is to increase the temperature limit threshold Tj of the thermostat. However, this drying control method actively compensates the actual drying inlet air temperature by designing a temperature compensation mode, enabling the heater to operate under the standard temperature limit, reducing the overheating risk of the heater, keeping the drying temperature fluctuation small, facilitating stable drying, avoiding the situation of slow drying efficiency caused by sudden stop of the heater, and improving the safety inside the clothing processing equipment at the same time.

[0033] II. Reducing Hardware Costs Another traditional method to avoid frequent on-off of the heater is to increase the heat capacity of the clothing processing equipment. Specific means include, for example, thickening the heat insulation layer, resulting in an increase in equipment volume and response delay. However, this drying control method actively compensates the actual drying inlet air temperature by designing a temperature compensation mode, avoiding frequent on-off of the heater, and there is no need to increase hardware to improve the overall heat capacity of the equipment, thus reducing hardware costs.

[0034] III. Active Prevention and Protection Instead of Passive Trigger Traditional heaters rely on the thermostat to passively cut off high temperatures (already close to or reaching the critical state). The protection action itself means that the system is already on the verge of risk. However, the temperature compensation mode in this drying control method compensates the actual drying inlet air temperature before the thermostat is triggered, reducing the working burden of the heater, avoiding the trigger of high-temperature protection from the root cause. This makes the heater more energy-efficient and extends its lifespan. It also keeps the drying temperature fluctuation small, facilitating stable drying, and avoiding the situation of slow drying efficiency caused by sudden stop of the heater.

[0035] Optionally, in an implementation manner of this embodiment, T2' = Ts, and the heating program assigns the second temperature variable T2 to T2', including: Adding a compensation amount X to the value of the second temperature variable T2 and assigning the second temperature variable T2 to the target heating temperature Ts. The compensation amount is the difference between the target heating temperature and the second temperature variable T2 before temperature compensation, that is, X = Ts - T2.

[0036] In this embodiment, before the first temperature variable T1 of the thermostat reaches the temperature limit threshold Tj of the thermostat, if heating continues, the heater will stop working under the temperature limit. That is to say, the actual drying inlet air temperature measured at this time is the highest temperature that the drying air duct can reach in this environment. If heating is still carried out based on the preset drying inlet air temperature standard, it will cause the heater to turn on and off frequently, which will not only increase the usage failure rate of the heater but also reduce the drying efficiency of the clothing.

[0037] Therefore, through the temperature compensation mode, the actual drying inlet air temperature is compensated to be equal to the preset drying inlet air temperature, which can avoid the repeated on-off of the heater, thus ensuring the normal operation of the clothing treatment device, maintaining the clothes in a stable and continuous drying state, reducing the failure rate of the heater, and improving the drying efficiency of the clothes.

[0038] In the temperature compensation mode, where X is the compensation amount set by the program, the compensation amount X is equal to the difference between the target heating temperature Ts and the second temperature variable T2 before temperature compensation. The compensation amount is added to the actual drying inlet air temperature so that the value of the actual drying inlet air temperature is equal to the value of the target heating temperature Ts. That is, at this time, the value transmitted by the air inlet temperature sensor to the system is a false value, rather than the real actual inlet air drying temperature, enabling the overall system of the clothing treatment device to detect that the value of the actual drying inlet air temperature is equal to the value of the target heating temperature Ts, thereby reducing the working burden of the heater, avoiding the heater from continuously operating at high power and triggering temperature limit due to the system not detecting that the actual drying inlet air temperature reaches the target heating temperature Ts, and entering the high-temperature protection state, thus avoiding the trigger of high-temperature protection from the root cause. This makes the heater more energy-efficient and extends its lifespan. It also keeps the drying temperature fluctuations small, which is beneficial for stable drying and avoids the situation of the heater suddenly stopping working and slowing down the drying efficiency.

[0039] Preferably, the heating program assigns the second temperature variable T2 to T2', including: Adding the compensation amount X to the value of the second temperature variable T2 to assign the second temperature variable T2 to be greater than the target heating temperature Ts, X = Ts - T2 + ΔT, where ΔT is a correction parameter.

[0040] Preferably, the heating program assigns the second temperature variable T2 to T2', including: Adding the compensation amount X to the value of the second temperature variable T2 to assign the second temperature variable T2 to be greater than the target heating temperature Ts, X = k × (Ts - T2), where k is a correction coefficient and k > 1.

[0041] Specifically, assume that the temperature limit threshold Tj of the thermostat is 120 °C and the set value △Td is set to 1 °C, that is, when the thermostat temperature reaches 119 °C, the temperature compensation judgment mechanism is triggered. At this time, if the user's target heating temperature Ts is 80 °C and the actually detected actual drying inlet air temperature T2 is only 75 °C, the control main board immediately executes the temperature compensation program.

[0042] The calculation logic for compensating temperature X can be optimized as X = Ts - T2 + ΔT = 5 + ΔT, where ΔT is a correction parameter for post-temperature correction, with a value range of 0.5 to 1.5 °C, dynamically adjusted according to historical data to solve the compensation error problem caused by the response delay of each temperature sensor and avoid the problem of repeatedly entering the temperature mode.

[0043] Specifically, in terms of environmental temperature adaptability, when the detected environmental temperature is lower than 5 °C, the low-temperature compensation enhancement mode is automatically activated, increasing the calculation base of the compensation temperature X by 10%, i.e., k = 1.1, that is, X = 1.1×(Ts - T2), to avoid compensation failure caused by insufficient heater power in cold weather. When the environmental temperature is higher than 30 °C, dynamic adjustment of the high-temperature protection threshold is initiated, temporarily raising the temperature N at which the temperature limiter disconnects by 5 °C to prevent over-compensation problems caused by excessively high environmental temperatures, ensuring stable operation of the device within the environmental temperature range of -10 °C to 40 °C.

[0044] In addition, a fuzzy control algorithm can be introduced into this control method to optimize the temperature compensation process. Based on the dual parameters of the temperature rise rate of the temperature limiter (dT / dt) and the difference between the actual drying inlet air temperature and the preset drying inlet air temperature (Ts - T2), the temperature compensation mode is divided into three modes: mild compensation (dT / dt < 2 °C / s and Ts - T2 < 5 °C), moderate compensation (2 °C / s ≤ dT / dt < 5 °C / s or 5 °C ≤ Ts - T2 < 10 °C), and deep compensation (dT / dt ≥ 5 °C / s and Ts - T2 ≥ 10 °C). The control main board can adopt different compensation strategies in different modes: in mild compensation, X = Ts - T2 + 1 °C; in moderate compensation, X = Ts - T2 + 3 °C; in deep compensation, X = Ts - T2 + 5 °C, and is paired with hierarchical adjustment of the heater power, that is, maintaining 80% power in mild compensation, increasing to 90% in moderate compensation, and enabling 100% power in deep compensation, so as to enable the clothing treatment device to achieve refined temperature control.

[0045] Optionally, in one implementation of this embodiment, as Figure 2 shown, After executing the temperature compensation mode, the heating control method further includes: Determine whether the heater needs to continue working; Control the working state of the heater according to the determination result of whether the heater needs to continue working; If it needs to continue working, control the heater to continue heating the heating object; If it does not need to continue working, control the heater to stop working.

[0046] When the heater is a heater for heating the drying air flow, the determination of whether the heater needs to continue working includes: Continue to obtain the second temperature variable T2 of the heating object and the third temperature variable T3 of the heating object; Determine whether to control the heater to continue working according to whether the difference between the second temperature variable T2 and the third temperature variable T3 of the heating object reaches a preset difference; wherein, the second temperature variable T2 is the drying inlet air temperature for providing drying inlet air into the treatment cylinder of the laundry treatment device, and the third temperature variable T3 is the drying outlet air temperature for providing drying inlet air into the treatment cylinder of the laundry treatment device; If the difference between the second temperature variable T2 and the third temperature variable T3 of the heating object is greater than or equal to the preset difference △Th, control the heater to continue working.

[0047] Preferably, the preset difference is △Th, where: △Th > 8°C.

[0048] In this embodiment, when the laundry treatment device enters the temperature compensation mode, the inlet air temperature sensing module first detects with the target heating temperature Ts set by the user as the standard. At the same time, the program main board judges whether the heater needs to continue heating. If the program main board judges that the heater does not need to be heated anymore, the laundry treatment device operates normally and cools down until the operation ends. If the program main board judges that the heater needs to continue heating, and the difference between the actual drying inlet air temperature T2 and the actual drying outlet air temperature T3 is equal to △Th degrees Celsius, that is, the difference between the actual drying inlet air temperature and the actual drying outlet air temperature reaches the preset difference, then the program main board controls the heater to turn on and continue to heat the drying air duct. When the difference between the actual drying inlet air temperature T2 and the actual drying outlet air temperature does not reach △Th degrees Celsius, the heater can be controlled to stop working, and the heater can also be controlled to operate at a reduced power. The reduction amplitude saves energy while avoiding the first temperature variable T1 of the temperature limiter from reaching the limit temperature. If it is detected that the actual drying inlet air temperature T2 is equal to the target heating temperature Ts at this time, it means that the temperature in the drying air duct has reached the target heating temperature Ts set by the user. Then there is no need to enter the temperature compensation mode. At this time, it is judged whether the heater needs to continue heating the drying air duct. When it is judged that the heater does not need to continue heating, the laundry treatment device operates normally in the subsequent steps and cools down until the operation ends. If the heater needs to continue heating the drying air duct, when the difference between the actual drying inlet air temperature T2 and the actual drying outlet air temperature is equal to △Th degrees Celsius, that is, the difference between the actual drying inlet air temperature and the actual drying outlet air temperature reaches the preset difference, then the program main board controls the heater to turn on and continue to heat the drying air duct.

[0049] Preferably, the control method can also set a special protection mechanism for extreme working conditions: High-temperature overload protection: When the first temperature variable T1 of the temperature limiter rapidly rises above the temperature limit (Tj - 5) °C within 10 seconds, the control main board determines that the heater is overloaded, immediately cuts off the heating power supply, starts the strong cooling fan (power 20W), and at the same time displays the fault code E03. Manual reset is required and the heater and air duct need to be checked.

[0050] Low-temperature start-up optimization: When the ambient temperature < 0 °C, the device starts the preheating program: first preheats the heater at a power of 500W for 3 minutes, and at the same time the drum rotates slowly (300 revolutions per minute) to prevent abnormal data detected by the air inlet temperature sensor module due to too low temperature. After the preheating is completed, it enters the normal drying process.

[0051] When used in high-altitude areas (altitude > 1000m), the control main board can automatically enable the altitude compensation mode through a preset program: calculate the air density correction coefficient according to the altitude (obtained through the air pressure sensor). For every 1000m increase in altitude, the target heating temperature Ts is increased by 3 °C, and the compensation amount X is increased by 1 °C to avoid the decrease in heating efficiency caused by the thin air and ensure the same drying effect of the device in areas below 3000m altitude.

[0052] In this embodiment, if the clothing treatment device determines that the heater still needs to continue working, calculate the difference between the measured actual drying inlet air temperature and the actual drying outlet air temperature, and compare the calculation result with the preset difference. According to the comparison result, determine whether to start the heater to work. If the difference between the actual drying inlet air temperature and the actual drying outlet air temperature does not reach the preset difference, it means that the temperature in the drying air duct is relatively stable. For example, under the condition of △Th = 10 °C, if the difference between the actual drying inlet air temperature and the actual drying outlet air temperature is 8 °C, then at this time this difference is relatively small, indicating that the temperature in the drying air duct is relatively stable, and the actual drying inlet air temperature can meet the current clothing drying demand. Therefore, there is no need for the heater to perform additional heating, reducing the energy consumption of the clothing treatment device. If the difference between the actual drying inlet air temperature and the actual drying outlet air temperature is equal to or greater than the preset difference, if the difference between the actual drying inlet air temperature and the actual drying outlet air temperature is 15 °C, then at this time this difference is relatively large, indicating that at this time a large amount of heat energy has been absorbed by the clothing in the drying air duct, and the actual drying inlet air temperature can no longer meet the current clothing drying demand. Therefore, the heater needs to heat the drying air duct to raise the actual drying inlet air temperature, thereby improving the drying efficiency of the clothing treatment device for clothing.

[0053] More specifically, when △Th > 8 °C and the preset difference △Th is greater than 8 °C, the higher the humidity in the drying air duct, the shorter the time to reach this temperature difference, and the faster the heater is turned on, which is beneficial for rapid heating and drying. When the clothes are relatively dry and the humidity in the drying air duct is relatively low, the heater is turned on more slowly, which is beneficial for protecting the clothes.

[0054] Preferably, the judgment logic of the heater working state can be further refined during the execution stage. The acquisition point of the actual drying outlet air temperature is set 5 cm behind the drying cylinder outlet, and the TsT1000 sensor of the same model as the inlet air temperature sensor is used to ensure the consistency of temperature detection. The dynamic adjustment mechanism of the preset difference △Th is as follows: When the moisture content of the drying load > 50%, △Th = 15°C, allowing a larger temperature difference to improve the heating efficiency; When the moisture content ≤ 50% and > 20%, △Th = 13°C, balancing the drying efficiency and energy consumption; When the moisture content ≤ 20%, △Th = 10°C, preventing damage to the clothes caused by over-drying.

[0055] The judgment process for starting the heater adds hysteresis control: The heater is started only when the difference between the actual drying inlet air temperature and the actual drying outlet air temperature is greater than or equal to △Th + Δt °C, avoiding frequent start and stop of the heater caused by small temperature fluctuations. For example, when Δt = 1°C and △Th = 13°C, the heater is started when the difference is greater than or equal to 14°C, and stopped when the difference is less than or equal to 13°C. The hysteresis width is 1°C, and the start and stop frequency of the heater can be controlled to effectively extend its service life.

[0056] In this control method, if the actual drying inlet air temperature reaches the target heating temperature Ts, it means that the current actual drying inlet air temperature has reached the highest temperature that the drying air duct can reach in this environment. At this time, if the heater does not need to continue working, it means that there is no need to continue heating the drying air duct, and the subsequent steps can be continued to reduce the operating energy consumption of the clothing treatment equipment. If the heater needs to continue working, it means that the clothes still need to be dried, and the drying air duct needs to be heated continuously. Restart the heater to work and execute the drying control method at the preset inlet air temperature. During the previous operation process, the actual drying inlet air temperature reached the target heating temperature Ts before the heater temperature limit, and it will not cause the heater to enter high-temperature protection due to reaching the temperature limit. Therefore, this preset inlet air temperature is reasonable and does not need to be adjusted. It can not only continue to heat the drying air duct but also avoid repeated on and off of the heater, thus further improving the drying efficiency of the clothing treatment equipment.

[0057] Embodiment 2 This embodiment provides an electronic device, which includes: A memory for storing computer instructions; A processor for calling and executing the computer instructions to implement the heating control method as in Embodiment 1.

[0058] In this embodiment, the electronic device includes a memory and a processor. The memory is used to store computer instructions, and the processor is used to call and execute the computer instructions to implement the heating control method in the first embodiment. Since the electronic device can execute the heating control method in the first embodiment, the electronic device has all the beneficial effects of the heating control method in the first embodiment, which will not be elaborated here.

[0059] In addition, a fault diagnosis and fault tolerance processing module can be added to the electronic device. When it is detected that the change trend of the temperature of the thermostat is abnormal compared with the actual drying inlet air temperature, for example, the temperature of the thermostat rises rapidly while the actual drying inlet air temperature remains unchanged, and the duration exceeds 10 s, the system determines that it is a sensor fault, immediately starts a standby temperature model (a temperature-time curve fitted based on historical data) to maintain the drying process, and outputs a fault code through the T2CD display screen (such as E01 indicates that the thermostat sensor is abnormal, and E02 indicates that the inlet air temperature sensor is abnormal). At the same time, the fault information is stored in the data record area for after-sales maintenance.

[0060] Embodiment III This embodiment provides a laundry treatment device that uses the heating control method in the first embodiment or includes the electronic device in the second embodiment.

[0061] In this embodiment, the laundry treatment device can be a drum washing machine or other devices that can perform drying treatment on clothes. The laundry treatment device can directly execute the heating control method in the first embodiment to perform drying treatment on clothes, or an electronic device in the second embodiment can be set on the laundry treatment device, and the heating control method in the first embodiment can be executed through the electronic device in the second embodiment to perform drying treatment on clothes. Since the laundry treatment device can directly execute the heating control method in the first embodiment or is provided with the electronic device in the second embodiment, the laundry treatment device has all the beneficial effects of the heating control method in the first embodiment or the electronic device in the second embodiment, which will not be elaborated here.

[0062] The structure of this clothing processing device is optimized in multiple dimensions. The drying duct adopts a dual-circulation design, with the main duct responsible for heated air delivery and the secondary duct for temperature balancing. Honeycomb-shaped deflectors, with 5mm spacing and a 30° angle, are installed within the main duct to evenly distribute the heated air and reduce temperature gradients within the duct (target temperature difference ≤ 2°C). The secondary duct inlet is located 10cm behind the main duct heater, and the outlet is located at the top of the drying drum. A micro fan (5W power) drives air circulation, further improving temperature uniformity. The inner wall of the drying drum features a corrugated design with a peak height of 8mm and a pitch of 30mm. This increases the contact area between clothing and the hot air, and has been shown to improve drying efficiency by 15%. A nano-scale far-infrared coating (5μm thick) is applied to the drum wall. During heating, it radiates far-infrared radiation with a wavelength of 4-14μm, resonating with water molecules and accelerating evaporation. This significantly improves drying efficiency for delicate fabrics such as wool and silk, reducing drying time by 20%.

[0063] Preferably, the clothes processing device can also develop exclusive modes for different application scenarios: Thick fabric mode: Suitable for down jackets, blankets, etc. The target heating temperature Ts is set to 85℃, the temperature limit N=125℃, and the set value △Td is 2℃. When the first temperature variable T1 of the temperature limiter reaches 123℃, the compensation is started. At this time, the actual drying air inlet temperature is 80℃, the compensation amount X=85-80+3=8℃, and each heating cycle is extended to 15 minutes (10 minutes in standard mode) to ensure that the deep moisture of thick fabrics is fully evaporated.

[0064] Fast drying mode: For shirts, T-shirts, etc., the target heating temperature Ts = 90 ° C, the temperature limit N = 130 ° C, and the set value △Td is 1 ° C. When the first temperature variable T1 of the temperature limiter reaches 129 ° C, compensation is started. At this time, the actual drying air inlet temperature is 85 ° C, and the compensation amount X = 90-85+5 = 10 ° C. At the same time, the heater power is increased to 1200W (1000W in standard mode), and the drum rotates at high speed (800 rpm) to achieve fast drying within 30 minutes.

[0065] Energy-saving mode: When the ambient temperature is ≥25℃, the target heating temperature Ts=75℃, the temperature limit N=115℃, and the set value △Td is 3℃. When the first temperature variable T1 of the temperature limiter reaches 112℃, compensation is started. At this time, the actual drying air inlet temperature is 72℃, the compensation amount X=75-72=3℃, and the intermittent heating strategy is enabled (heating for 5 minutes and stopping for 2 minutes) to achieve energy-saving effect.

[0066] The device can also integrate Internet of Things functions and connect to the cloud server through a Wi-Fi module (supporting 802.11b / g / n). Users can remotely monitor the drying status through their mobile phones △ThTs and view data such as the temperature of the thermostat, the inlet air temperature, and the number of compensation times in real time. The △ThTs end provides an intelligent reminder function. When the system detects that the working duration of a certain component (such as the heater) reaches the preset maintenance cycle (such as 500 hours), it automatically pushes a maintenance notice. In addition, the cloud server can collect the operation data of multiple devices, continuously optimize the temperature compensation algorithm through big data analysis, and regularly push firmware upgrade packages to the devices to achieve continuous evolution of functions.

[0067] In summary, the ingenious concept of the heating control method lies in: First, when the first temperature variable T1 of the thermostat is less than the temperature limit threshold Tj of the thermostat and the difference between the temperature limit threshold Tj of the thermostat and the first temperature variable T1 of the thermostat reaches the set value △Td, it is judged whether the second temperature variable T2 of the heating object reaches the target heating temperature Ts. If the second temperature variable T2 of the heating object does not reach the target heating temperature Ts, the heating program automatically enters the temperature compensation mode. In the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2', where T2 < T2' and T2' ≥ Ts, which can effectively prevent the heater from frequently entering the high-temperature protection state, with small fluctuations in the drying temperature, stable drying effect, and extended service life of the heater.

[0068] Second, an increment X is added to the value of the second temperature variable T2 and the second temperature variable T2 is assigned to the target heating temperature Ts. The increment is the difference between the target heating temperature and the second temperature variable T2 before temperature compensation, thereby reducing the working burden of the heater, preventing the heater from being triggered to limit the temperature and enter the high-temperature protection state due to the system not detecting that the actual drying inlet air temperature reaches the target heating temperature Ts, and avoiding the trigger of high-temperature protection from the root cause. This makes the heater more energy-efficient and has an extended service life. It also keeps the fluctuations in the drying temperature relatively small, which is beneficial for stable drying and avoids the situation of slowing down the drying efficiency caused by the sudden stop of the heater.

[0069] Third, when the preset difference △Th is greater than 8°C, the higher the humidity in the drying air duct, the shorter the time to reach this temperature difference and the faster the heater is turned on, which is beneficial for rapid heating and drying. When the clothes are relatively dry and the humidity in the drying air duct is low, the heater is turned on more slowly, which is beneficial for protecting the clothes.

[0070] It can be further understood that in the present disclosure, "plural" means two or more, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms of "a", "the", and "said" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0071] It can be further understood that the terms "first", "second", etc. are used to describe various information, but this 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 represent a specific order or degree of importance. In fact, the expressions such as "first" and "second" 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.

[0072] It can be 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 that these operations are required to be performed in the specific order shown or in a serial order, or that all the operations shown are required to obtain the desired result. In a specific environment, multitasking and parallel processing may be beneficial.

[0073] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application aims to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the well-known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0074] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A heating control method for a clothes processing device, wherein the clothes processing device comprises a heater for providing electric heating to a heating object and a temperature limiter for temperature limiting protection of the heater, characterized in that: The control method includes: In response to the operation instruction of the heating program, setting the target heating temperature Ts of the heating object; Starting the heater and monitoring the first temperature variable T1 of the temperature limiter and the second temperature variable T2 of the heating object in real time; When the absolute value of the difference between the first temperature variable T1 and the temperature limit threshold Tj of the temperature limiter is less than or equal to the set value ΔTd, determining whether the second temperature variable T2 has reached the target heating temperature Ts; wherein the first temperature variable T1 is the real-time temperature detection value of the temperature limiter during the heating process, the second temperature variable T2 is the real-time temperature detection value of the heating object during the heating process, and the temperature limit threshold Tj is the temperature threshold that triggers the temperature limiter to perform temperature limit protection on the heater; If the second temperature variable T2 does not reach the target heating temperature Ts, the heating program automatically enters the temperature compensation mode. In the temperature compensation mode, the heating program assigns the second temperature variable T2 to T2', where T2 <T2',T2'≥Ts。 2. The heating control method according to claim 1, characterized in that: The heater is a heater used for heating washing water or heating drying air flow; When the heater is a heater for heating washing water, the heating object is washing water, and the second temperature variable T2 is the temperature of the washing water; When the heater is a heater for heating drying airflow, the heating object is the drying airflow, and the second temperature variable T2 is the drying air inlet temperature for providing drying air to the processing drum of the clothes processing device.

3. The heating control method according to claim 2, characterized in that: T2'=Ts.

4. The heating control method according to claim 3, characterized in that: The heating program assigns the second temperature variable T2 to T2', including: The compensation amount X is added to the value of the second temperature variable T2 to assign the second temperature variable T2 to the target heating temperature Ts. The compensation amount is the difference between the target heating temperature and the second temperature variable T2 before temperature compensation, that is, X=Ts-T2.

5. The heating control method according to claim 2, characterized in that: The heating program assigns the second temperature variable T2 to T2', including: A compensation amount X is added to the value of the second temperature variable T2 to assign the second temperature variable T2 such that T2′ is greater than the target heating temperature Ts. X=Ts-T2+ΔT, where ΔT is a correction parameter.

6. The heating control method according to claim 2, characterized in that: The heating program assigns the second temperature variable T2 to T2', including: A compensation amount X is added to the value of the second temperature variable T2 to set the second temperature variable T2 to be greater than the target heating temperature Ts, where X=k×(Ts-T2), k is a correction coefficient, k>1, and × represents a product.

7. The heating control method according to any one of claims 1 to 6, characterized in that: After executing the temperature compensation mode, the heating control method further includes: Determining whether the heater needs to continue working; controlling the operating state of the heater according to a result of determining whether the heater needs to continue operating; If it is necessary to continue working, control the heater to continue heating the heating object; If it is not necessary to continue working, the heater is controlled to stop working.

8. The heating control method according to claim 7, characterized in that: When the heater is a heater for heating a drying airflow, determining whether the heater needs to continue to work includes: Continue to obtain the second temperature variable T2 of the heating object and obtain the third temperature variable T3 of the heating object; determining whether to control the heater to continue operating based on whether a difference between a second temperature variable T2 of the heating object and a third temperature variable T3 of the heating object reaches a preset difference value ΔTh; wherein the second temperature variable T2 is a drying air inlet temperature for providing drying air to a processing drum of the clothes processing device, and the third temperature variable T3 is a drying air outlet temperature for providing drying air to the processing drum of the clothes processing device; If the difference between the second temperature variable T2 of the heating object and the third temperature variable T3 of the heating object is greater than or equal to the preset difference ΔTh, the heater is controlled to continue operating.

9. An electronic device, characterized in that: The electronic device comprises: Memory, which stores computer instructions; A processor is used to call and execute the computer instructions to implement the heating control method according to any one of claims 1 to 8.

10. A clothes processing device, characterized in that: The laundry processing device uses the heating control method according to any one of claims 1 to 8, or includes the electronic device according to claim 9.

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