Motor over-temperature protection method, control device and clothes processing equipment

Abstract

The embodiment of the invention discloses a motor over-temperature protection method, and belongs to the technical field of clothes treatment equipment. The motor over-temperature protection method comprises the steps that the normal working temperature of a motor at the initial environment temperature and the rated heat absorption capacity of the motor heated to the protection limit temperature from the normal working temperature in the working state of the clothes processing equipment are determined; in the process that the clothes processing equipment operates the motor based on the working state, the additional heating value of the motor is determined; and controlling the operation of the motor according to the additional heating amount and the rated heat absorption amount. According to the embodiment, the temperature condition of the motor can be accurately judged, a temperature sensor is not needed, the production cost of the clothes processing equipment is reduced, and the regulation and control effect on the motor temperature is improved.

Description

Technical Field

[0001] The present application relates to the field of clothing processing equipment, and in particular, to a motor over-temperature protection method, a control device and clothing processing equipment. Background Art

[0002] With the widespread use of clothing processing equipment, such as washing machines, users are paying more and more attention to the safety of clothing processing equipment. When a motor failure occurs in a clothing processing equipment, the clothing processing equipment may not work properly, and in more serious cases, it may bring the risk of electrical fire. Therefore, it is necessary to detect the overtemperature of the motor when the clothing processing equipment is in operation, and take corresponding measures when the motor overheats to prevent safety problems from occurring.

[0003] In the related art, a temperature sensor is used to detect the motor temperature, and the motor temperature is controlled according to the motor temperature detected by the temperature sensor. However, the cost of detecting the motor temperature by a temperature sensor is high, and the detection result of the temperature sensor is also affected by other heating components. The detection accuracy of the motor temperature is not high, which easily leads to misjudgment of the motor overheating and the inability to effectively control the motor temperature. Summary of the invention

[0004] The embodiments of the present application provide a motor over-temperature protection method, a control device and a clothing processing device, so as to at least solve the technical problem that the related technology detects the motor temperature through a temperature sensor, resulting in low detection accuracy of the motor temperature, prone to misjudgment of the motor over-temperature condition, and unable to effectively regulate the motor temperature.

[0005] According to a first aspect of an embodiment of the present application, a motor over-temperature protection method is provided, which is used in a clothes processing device. The motor over-temperature protection method includes:

[0006] Determine the normal operating temperature of the motor at the initial ambient temperature, and the rated heat absorption of the motor from the normal operating temperature to the protection limit temperature when the laundry processing device is in operation;

[0007] determining an additional amount of heat generated by the motor during operation of the motor by the laundry processing device based on the working state;

[0008] The operation of the motor is controlled according to the additional heat generation and the rated heat absorption.

[0009] According to the motor over-temperature protection method of the present embodiment, the temperature condition of the motor is determined by determining the rated heat absorption of the motor when the motor is heated from the normal operating temperature to the protection limit temperature and the additional heat generated by the motor when the clothing processing equipment is running the motor in the working state, and then determining whether the motor is in an over-temperature condition based on the temperature condition of the motor, and timely adjusting the temperature of the motor when the motor is in an over-temperature condition, thereby ensuring the accuracy and timeliness of the motor temperature regulation, enabling the motor to work efficiently within a safe temperature range, and effectively protecting the safety of the motor. In addition, the motor temperature can be monitored without the aid of a temperature sensor, thereby ensuring the accuracy of the motor temperature monitoring, ensuring the safety of the motor operation, and reducing the production cost of the clothing processing equipment.

[0010] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the additional heat generated by the motor is determined in the following manner:

[0011] determining a total heat generated by the motor up to the current moment according to an actual power of the motor during operation of the motor by the laundry processing device based on the working state;

[0012] Determining a rated heating value of the motor at the current moment according to the rated power of the motor during the process of the clothes processing device operating the motor based on the working state;

[0013] The additional heating value is determined according to the total heating value and the rated heating value.

[0014] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, the additional heat value satisfies the following formula:

[0015]

[0016] In the above formula: Q1 is the additional heat; Δt is the running time of the motor during the process of the clothes processing device running the motor based on the working state; P(t) is the actual power during the running time of the motor; P0 is the rated power; is the total heat generated by the motor during the said operation time; P0*Δt is the rated heat generated by the motor during the said operation time.

[0017] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the motor has a plurality of protection limit temperatures with increasing temperature values, and the motor is heated from the normal operating temperature to different protection limit temperatures corresponding to different rated heat absorption, and the operation of the motor is controlled according to the additional heat generation and the rated heat absorption, including:

[0018] comparing the additional heat generation with a plurality of rated heat absorptions corresponding to the plurality of protection limit temperatures respectively;

[0019] Controlling the operation of the motor according to a comparison result of the additional heat generation and the plurality of rated heat absorption values;

[0020] Among them, different rated heat absorption corresponds to different motor control strategies. The higher the rated heat absorption, the lower the operating frequency of the motor. When the additional heat generated by the motor reaches the maximum rated heat absorption of the multiple rated heat absorptions, the motor is controlled to shut down for protection.

[0021] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the motor has a first protection limit temperature and a second protection limit temperature with increasing temperature values, the motor is heated from the normal operating temperature to the first protection limit temperature corresponding to a first rated heat absorption, and the motor is heated from the normal operating temperature to the second protection limit temperature corresponding to a second rated heat absorption, and the operation of the motor is controlled according to a comparison result of the additional heat generation with the multiple rated heat generation, including:

[0022] When the additional heat generation is less than or equal to the first rated heat absorption, controlling the motor to operate at the current frequency;

[0023] When the first rated heat absorption is less than the additional heat generation and less than the second rated heat absorption, the motor is controlled to operate at a reduced frequency;

[0024] When the additional heat generation is greater than the second rated heat absorption, the motor is controlled to stop for a second set time and then restart.

[0025] In combination with the first aspect, in an optional implementation of the embodiment of the present application, before determining the additional heat amount, the motor over-temperature protection method further includes:

[0026] In the process of the clothes processing device operating the motor based on the working state, when the power determination value of the motor is greater than the rated power, determining the additional heat generation;

[0027] Wherein: the power determination value is the actual power or average power of the motor during the process in which the clothes processing device operates the motor based on the working state.

[0028] In combination with the first aspect, in an optional implementation manner of the embodiment of the present application, when the power judgment value of the motor is ≤ the rated power, the motor is controlled to run at the current frequency.

[0029] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the motor overtemperature protection method includes:

[0030] The normal operating temperature of the motor at the initial ambient temperature and the rated power of the motor when the motor is operated in the working state of the laundry treating apparatus are determined according to the laundry treating mode of the laundry treating apparatus and the laundry weight.

[0031] According to the second aspect of the implementation manner of the present application, a control device is provided, which includes one or more processors and a non-temporary computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the motor over-temperature protection method provided by the first aspect of the implementation manner of the present application.

[0032] According to the third aspect of the embodiment of the present application, a clothing processing device is provided, characterized in that it adopts the motor over-temperature protection method provided by the first aspect of the embodiment of the present application, or includes the control device provided by the second aspect of the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is one of the flow charts of motor over-temperature protection provided in the implementation manner of the present application.

[0034] Figure 2 This is the second flow chart of the motor over-temperature protection provided in the implementation manner of the present application.

[0035] Figure 3 This is the third flow chart of the motor over-temperature protection provided in the implementation manner of the present application.

[0036] Figure 4 This is the fourth flow chart of the motor over-temperature protection provided in the implementation manner of the present application.

[0037] Figure 5 It is a structural block diagram of the control device provided in the implementation manner of the present application. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0039] It should be understood that the "plurality" mentioned herein refers to two or more than two. In the description of the implementation modes of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the implementation modes of the present application, in the implementation modes of the present application, the words "first", "second" and the like are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not limit certain different

[0040] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0041] In the related art, the motor temperature is controlled to be lowered according to the motor temperature detected by the temperature sensor. Specifically, the ambient temperature is detected by the first temperature sensor, the temperature range of abnormal operation of the motor is determined according to the ambient temperature, the motor temperature is detected by the second temperature sensor, and the detected motor temperature is compared with the abnormal temperature to determine whether the motor temperature is overheated. Since the temperature detected by the second temperature sensor is easily affected by other heating components inside the clothing processing device, the temperature detected by the temperature sensor cannot accurately reflect the motor temperature, which is prone to misjudgment of motor overheating and inability to effectively control the motor temperature.

[0042] In order to solve the above technical problems, this embodiment proposes a motor over-temperature protection method, which includes:

[0043] Determine the normal operating temperature of the motor at the initial ambient temperature and the rated heat absorption of the motor from the normal operating temperature to the protection limit temperature when the clothes processing device is in operation;

[0044] determining an additional amount of heat generated by the motor during operation of the motor by the laundry treatment device based on the working state;

[0045] The operation of the motor is controlled based on the excess heat generation and the rated heat absorption.

[0046] According to the motor overtemperature protection method of this embodiment, the motor temperature is not detected by a temperature sensor, and the temperature condition of the motor is determined by the heating condition of the motor during the operation of the motor in the clothing processing device under the working state, and whether the motor is in an overtemperature condition is determined according to the temperature condition of the motor, thereby improving the accuracy of the motor overtemperature judgment and reducing the production cost. When it is determined that the motor is in an overtemperature condition, this embodiment can timely regulate the motor temperature, effectively control the motor temperature, make the motor work efficiently within a safe temperature range, effectively protect the motor safety, and improve the clothing processing efficiency.

[0047] The present embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and examples may be combined with each other if there is no conflict.

[0048] First, the structure of the implementation body of the motor overtemperature protection method of this embodiment is briefly introduced. The motor overtemperature protection method of this embodiment is applied to a clothing processing device, and the clothing processing device can have only a washing function, only a drying function, or both a washing function and a drying function. The motor overtemperature protection method of this embodiment can be applied to a drum-type clothing processing device, and can also be applied to a pulsator-type clothing processing device.

[0049] The clothing processing device includes a housing, an outer drum and an inner drum, wherein the outer drum is arranged in the housing, and the inner drum is rotatably arranged in the outer drum. The clothing processing device also includes a motor and a drive shaft, wherein the motor is arranged in the space between the outer drum and the housing, one end of the drive shaft is connected to the motor, and the other end passes through the bottom of the outer drum and is connected to the bottom of the inner drum, and the motor drives the inner drum to rotate through the drive shaft. The clothing processing device is provided with a temperature sensor, which is arranged in the housing and is used to detect the ambient temperature.

[0050] Figure 1 is one of the flow charts of motor over-temperature protection according to this embodiment, referring to Figure 1 , the motor over-temperature protection method includes the following steps:

[0051] S11, determining the normal operating temperature of the motor at the initial ambient temperature, and the rated heat absorption of the motor from the normal operating temperature to the protection limit temperature when the laundry processing device is in operation.

[0052] Specifically, the initial ambient temperature is the ambient temperature before the clothing processing device enters the working state, and the protection limit temperature is the critical temperature at which the motor needs to be regulated. The control device of the clothing processing device stores the correspondence between the ambient temperature and the normal working temperature of the motor and the protection limit temperature of the motor. The correspondence between the ambient temperature and the normal working temperature of the motor and the protection limit temperature can be flexibly adjusted according to the motor model. After determining the initial ambient temperature, the normal working temperature of the motor corresponding to the initial ambient temperature can be determined. After determining the normal working temperature of the motor, the rated heat absorption of the motor from the normal working temperature to the protection limit temperature can be determined.

[0053] S12. Determine an additional amount of heat generated by the motor when the clothes processing device operates the motor based on the working state.

[0054] Specifically, when the clothing processing device is in operation, such as during the washing process, the motor will drive the inner drum to rotate. Heat will be continuously generated during the rotation of the motor. When the motor generates more heat, additional heat will be generated. Therefore, it is necessary to determine the additional heat generated by the motor so that the temperature of the motor can be determined in subsequent steps based on the additional heat generated and the rated heat absorption. In actual application, the additional heat generated by the motor can be determined in real time, or the additional heat generated by the motor can be periodically detected at set intervals to reduce the number of program runs.

[0055] S13. Control the operation of the motor according to the additional heat generation and the rated heat absorption.

[0056] Specifically, after determining the additional heat generation and the rated heat absorption, the heating condition of the motor can be determined based on the additional heat generation and the rated heat absorption. For example, when the additional heat generation is greater than the rated heat absorption, it can be determined that the current motor temperature is very likely to exceed the protection limit temperature, the motor is in an over-temperature condition, and the motor temperature needs to be regulated. When the additional heat generation is less than or equal to the rated heat absorption, it can be determined that the current motor temperature does not exceed the protection limit temperature, the motor is not in an over-temperature condition, and there is no need to regulate the motor temperature to maintain normal operation of the motor.

[0057] By adopting this embodiment, the temperature condition of the motor is determined by determining the rated heat absorption of the motor when the motor is heated from the normal operating temperature to the protection limit temperature, and the additional heat generated by the motor when the clothing processing device runs the motor in the working state, and then determining whether the motor is in an overtemperature condition based on the temperature condition of the motor, and timely adjusting the temperature of the motor when the motor is in an overtemperature condition, thereby ensuring the accuracy and timeliness of the motor temperature regulation, enabling the motor to work efficiently within a safe temperature range, and effectively protecting the safety of the motor. In addition, the motor temperature does not need to be monitored by a temperature sensor, and other heating components will not affect the judgment of motor overtemperature, thereby improving the accuracy of motor temperature monitoring and reducing the production cost of clothing processing equipment.

[0058] Figure 2 This is the second flow chart of the motor over-temperature protection according to this embodiment, referring to Figure 2 , the method for determining the additional heat of the motor includes the following steps:

[0059] S21 , determining a total heat generation of the motor up to the current moment according to an actual power of the motor during operation of the motor by the laundry processing device based on the working state.

[0060] Specifically, the actual power of the motor during operation is calculated based on the current value and voltage value of the motor. After the actual power of the motor is determined, the total heat generated by the motor up to the current moment can be determined based on the actual power.

[0061] S22, determining a rated heat generation of the motor at a current moment according to the rated power of the motor during operation of the motor by the laundry processing device based on the working state;

[0062] Specifically, the control device of the washing machine stores the rated power of the motor of the laundry processing device in different working states, and the working state of the motor is related to the laundry processing mode of the laundry processing device and the weight of the laundry. After determining the rated power of the laundry processing device, the rated heat generation of the motor at the current moment can be determined based on the rated power.

[0063] S23. Determine the additional heating value according to the total heating value and the rated heating value.

[0064] Specifically, after the total heat generation and the rated heat generation of the motor running up to the current moment are determined, the additional heat generation can be determined according to the total heat generation and the rated heat generation.

[0065] In one example, the additional heat generated by the motor at the current moment is the difference between the total heat generated and the rated heat generated. That is, the additional heat generated satisfies the following formula:

[0066]

[0067] In the above formula: Q1 is the additional heat; Δt is the running time of the motor in the process of the clothes processing device running the motor based on the working state; P(t) is the actual power during the running time of the motor; P0 is the rated power; is the total heat generated by the motor during its operation; P0*Δt is the rated heat generated by the motor during its operation.

[0068] By adopting this implementation mode, the additional heating value of the motor is determined based on the total heating value and the rated heating value of the motor up to the current moment, so as to accurately reflect the heating condition of the motor. The higher the additional heating value, the higher the temperature of the motor. Conversely, the lower the additional heating value, the lower the temperature of the motor. The temperature condition of the motor can be accurately judged without the aid of a temperature sensor, so as to subsequently determine whether it is in an over-temperature condition by combining it with the protection limit temperature of the motor, thereby ensuring that the motor operates within a safe temperature range.

[0069] The motor in this embodiment may have only one protection limit temperature or may have multiple protection limit temperatures.

[0070] In some embodiments, the motor has a plurality of protection limit temperatures with increasing temperature values, and different rated heat absorption values ​​correspond to the motor being heated from a normal operating temperature to different protection limit temperatures. Figure 3 This is the third flow chart of the motor over-temperature protection according to this embodiment, referring to Figure 3 , the operation of the motor is controlled according to the additional heat generation and the rated heat absorption, including the following steps:

[0071] S31. Compare the additional heat generation with a plurality of rated heat absorption amounts corresponding to a plurality of protection limit temperatures.

[0072] Specifically, multiple protection limit temperatures and the rated heat absorption values ​​corresponding to the multiple protection limit temperatures are stored in the control device of the clothing processing device. After determining the extra heat generated by the motor of the clothing processing device in the working state, multiple rated heat absorption values ​​corresponding to the multiple protection limit temperatures are retrieved, and the extra heat generated is compared with the multiple rated heat absorption values ​​respectively, and it is determined whether the motor is in an overtemperature state according to the comparison result.

[0073] S32. Controlling the operation of the motor according to a comparison result of the additional heat generation and a plurality of rated heat absorption values.

[0074] Specifically, according to the results of comparing the additional heat generation with multiple rated heat absorption values, if it is determined that the motor is in an over-temperature state, the motor needs to be regulated to reduce the motor temperature to a normal operating range. If it is determined that the motor has not reached an over-temperature state, the motor does not need to be regulated, and the current state of the motor can be maintained. In one example, different rated heat absorption values ​​correspond to different motor regulation strategies. The higher the rated heat absorption value, the lower the operating frequency of the motor. When the additional heat generation of the motor reaches the maximum rated heat absorption value of multiple rated heat absorption values, the motor is controlled to shut down for protection.

[0075] By adopting this implementation, the temperature of the motor is determined by comparing the extra heat generated by the motor with the rated heat absorption corresponding to multiple protection limit temperatures, and then determining whether the motor is in an overtemperature state. At the same time, by adopting different motor control strategies when the extra heat generated by the motor reaches different rated heat absorption, it is possible to ensure that the motor temperature is maintained within a safe operating temperature range, thereby ensuring safe and stable operation of the motor.

[0076] In one achievable manner, the motor has a first protection limit temperature and a second protection limit temperature with increasing temperature values, wherein the first protection limit temperature is still within the safe temperature range of the motor operation and is a critical temperature at which the motor temperature needs to be regulated. When the motor temperature reaches the first protection limit temperature, the motor can still operate normally, but the motor temperature needs to be regulated to prevent the motor temperature from continuing to rise to the second protection limit temperature. The second protection limit temperature is the maximum temperature value for the normal operation of the motor. When the motor temperature reaches the second protection limit temperature, if the motor temperature is not regulated, the motor will be scrapped.

[0077] The motor temperature rises from the normal operating temperature to the first protection limit temperature corresponding to the first rated heat absorption, and the motor temperature rises from the normal operating temperature to the second protection limit temperature corresponding to the second rated heat absorption. The operation of the motor is controlled according to the comparison result of the additional heat generation and multiple rated heat absorptions, including: when the additional heat generation ≤ the first rated heat absorption, it means that the motor temperature is within the normal operating temperature range, and the motor can be controlled to operate at the current frequency; when the first rated heat absorption < additional heat generation ≤ the second rated heat absorption, it means that the current motor is still within the normal operating temperature range, but if the motor temperature is not controlled, it will soon reach the second protection limit temperature, so the motor needs to be controlled to reduce the frequency to reduce the motor temperature; when the additional heat generation > the second rated heat absorption, it is judged that the motor is already in a temperature range that cannot maintain the normal operation of the motor, and the motor needs to be controlled to stop to reduce the motor temperature. Restart the motor after the motor is stopped for a set time, and the set time is, for example, 10min to 15min.

[0078] In some embodiments, before determining the additional heating value, the motor overtemperature protection method further includes: in the process of the clothes processing device running the motor based on the working state, when the power judgment value of the motor is greater than the rated power, determining the additional heating value.

[0079] Specifically, this embodiment first determines the power judgment value of the motor before determining the additional heat generation. The power judgment value of the motor is the actual power or average power of the motor in the process of the clothes processing device running the motor based on the working state. When the power judgment value of the motor is greater than the rated power of the motor, it means that the motor has additional heat generation, and the additional heat generation of the motor needs to be determined so as to control the operation of the motor in the future through the additional heat generation and the rated heat absorption. When the power judgment value of the motor is less than or equal to the rated power of the motor, it means that the motor does not have additional heat generation. At this time, the motor can be controlled to run at the current frequency without determining the additional heat generation of the motor. This can reduce the number of program runs for determining the additional heat generation of the motor and improve the efficiency of temperature regulation and control of the motor.

[0080] In some embodiments, the motor overtemperature protection method includes: determining the normal operating temperature of the motor at the initial ambient temperature and the rated power of the motor when the motor is operated in the working state of the clothing processing device according to the clothing processing mode and the clothing weight of the clothing processing device.

[0081] Specifically, the three factors of laundry processing mode, laundry weight and initial ambient temperature jointly determine the normal operating temperature of the motor and the rated power of the motor. Exemplarily, a mapping relationship table of laundry processing mode, laundry weight, ambient temperature, normal operating temperature of the motor and rated power of the motor is pre-stored in the control device. When the laundry processing mode, laundry weight and initial ambient temperature are known, the normal operating temperature of the motor and the rated power of the motor can be obtained by looking up the table.

[0082] By adopting this embodiment, the normal operating temperature and rated power of the motor at the initial ambient temperature are determined by combining the clothing processing mode and the clothing weight, which can improve the accuracy of judging the overtemperature of the motor and improve the temperature control effect of the motor.

[0083] The following is a detailed description of this embodiment in conjunction with a washing machine. Figure 4 The motor over-temperature protection method of this embodiment is as follows:

[0084] When starting the washing machine for the first time, the user selects a laundry treatment mode or selects a laundry treatment mode based on the weight of the laundry. Then, according to the laundry treatment mode and the weight of the laundry, determine the temperature T1 at which the motor of the washing machine operates normally at the initial ambient temperature T, obtain the second protection limit temperature T2 when the motor of the washing machine overheats, and the first protection limit temperature T3. Calculate the heat Q that the motor needs to absorb when rising from the normal operating temperature T1 to the second protection limit temperature T2 and the heat Q2 that the motor needs to absorb when rising from the normal operating temperature T1 to the first protection limit temperature T3 through the main chip of the control device;

[0085] Synchronously, according to the laundry treatment mode and the weight of the laundry, obtain the rated power P of the motor in this operating state, and calculate the actual power P(t) of the motor during the running duration Δt at the current moment in real time through the main chip of the control device, and take its average value P1. Determine whether there is additional heat generation Q1 by comparing the magnitudes of P1 and P. If P1 < P, it is determined that there is no additional heat generation, and the washing machine proceeds with the normal washing process; if P1 > P, it is determined that there is additional heat generation, and calculate the additional heat generation Q1, where:

[0086] Compare the magnitudes of Q1 and Q2 to determine whether the motor temperature exceeds the first protection limit temperature T3. If Q1 < Q2, it can be known that the current operating temperature of the motor is less than the first protection limit temperature T3. At this time, the motor temperature is within the normal operating range, and the washing machine proceeds with the normal washing process;

[0087] If Q1 > Q2, it can be known that the current operating temperature of the motor has exceeded the first protection limit temperature T3. Further compare the magnitudes of Q1 and Q to determine whether the current operating temperature of the motor has exceeded the second protection limit temperature T2, and perform corresponding cooling treatments;

[0088] If Q1 > Q2 and Q1 < Q, it is determined that the current operating temperature of the motor only exceeds the first protection limit temperature T3 of the motor and does not exceed the second protection limit temperature T2. At this time, the control device controls the motor to operate at a reduced frequency to cool the motor, and synchronously performs overheat detection at all times;

[0089] If Q1 > Q2 and Q1 > Q, it is determined that the current operating temperature of the motor has exceeded the second protection limit temperature T2. At this time, the control device controls the motor to stop operating for a set duration to cool down, and reminds the user that the motor temperature is too high. After the set duration of the motor stop, control the motor to work again and synchronously perform motor overheat detection.

[0090] An embodiment of the present application also provides a control device, which includes one or more processors and a non-temporary computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used for any one of the motor over-temperature protection methods proposed in the above embodiments.

[0091] Specifically, Figure 5 As shown, the control device includes a processor 100, at least one communication bus 200, a user interface 300, at least one external communication interface 400 and a memory 500. The communication bus 200 is configured to realize the connection and communication between these components. The user interface 300 may include a display screen, and the external communication interface 400 may include a standard wired interface and a wireless interface. The memory 500 stores a motor overtemperature protection method. The processor 100 is used to adopt the above method when executing the motor overtemperature protection method stored in the memory 500.

[0092] This embodiment also provides a clothing processing device, which adopts the motor overtemperature protection method proposed above, or includes the control device proposed above. The clothing processing device of this embodiment can accurately judge the temperature of the motor without the need for a temperature sensor, thereby reducing the production cost of the clothing processing device, improving the control effect of the motor temperature, ensuring the safe and reliable operation of the motor, and improving the clothing processing efficiency.

[0093] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The steps shown in the relevant flow charts can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that here. In other words, the order of steps described in the foregoing embodiments is only an example, and reasonable adjustment of the order of steps based on the content of the embodiments of the present application is also within the scope of protection of the embodiments of the present application.

[0094] The description of the above computer program product, computer-readable storage medium, and control device is similar to the description of the above method implementation, and has similar beneficial effects as the method implementation. For technical details not disclosed in the computer program product, computer-readable storage medium, and control device of this application, please refer to the description of the method implementation of this application for understanding.

[0095] The sequence of numbers or introduction of the implementation methods of this application is for description only and does not represent the advantages or disadvantages of the implementation methods.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device implementation described above is only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0098] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0099] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions.

[0100] When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital versatile disc (DVD)) or a semiconductor medium (e.g., a solid state disk (SSD)), etc. It is worth noting that the computer-readable storage medium mentioned in the embodiment of the present application may be a non-volatile storage medium, in other words, a non-transient storage medium.

[0101] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in the implementation of this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions. For example, the scene data of the current frame in the three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the implementation of this application are all obtained with full authorization.

[0102] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A motor over-temperature protection method for a clothing processing device, characterized in that: The motor overtemperature protection method comprises: Determine the normal operating temperature of the motor at the initial ambient temperature, and the rated heat absorption of the motor from the normal operating temperature to the protection limit temperature when the laundry processing device is in operation; determining an additional amount of heat generated by the motor during operation of the motor by the laundry processing device based on the working state; The operation of the motor is controlled according to the additional heat generation and the rated heat absorption.

2. The motor over-temperature protection method according to claim 1, characterized in that: The additional heat generated by the motor is determined in the following manner: determining a total heat generated by the motor up to the current moment according to an actual power of the motor during operation of the motor by the laundry processing device based on the working state; Determining a rated heating value of the motor at the current moment according to the rated power of the motor during the process of the clothes processing device operating the motor based on the working state; The additional heating value is determined according to the total heating value and the rated heating value.

3. The motor over-temperature protection method according to claim 2, characterized in that: The additional heat generation satisfies the following formula: In the above formula: Q1 is the additional heat; Δt is the running time of the motor during the process of the clothes processing device running the motor based on the working state; P(t) is the actual power during the running time of the motor; P0 is the rated power; is the total heat generated by the motor during the said operation time; P0*Δt is the rated heat generated by the motor during the said operation time.

4. The motor over-temperature protection method according to claim 1, characterized in that: The motor has a plurality of protection limit temperatures with increasing temperature values, and the motor is heated from the normal operating temperature to different protection limit temperatures corresponding to different rated heat absorption. The operation of the motor is controlled according to the additional heat generation and the rated heat absorption, including: comparing the additional heat generation with a plurality of rated heat absorptions corresponding to the plurality of protection limit temperatures respectively; Controlling the operation of the motor according to a comparison result of the additional heat generation and the plurality of rated heat absorption values; Among them, different rated heat absorption corresponds to different motor control strategies. The higher the rated heat absorption, the lower the operating frequency of the motor. When the additional heat generated by the motor reaches the maximum rated heat absorption of the multiple rated heat absorptions, the motor is controlled to shut down for protection.

5. The motor over-temperature protection method according to claim 4, characterized in that: The motor has a first protection limit temperature and a second protection limit temperature with increasing temperature values, the motor is heated from the normal operating temperature to the first protection limit temperature corresponding to a first rated heat absorption, and the motor is heated from the normal operating temperature to the second protection limit temperature corresponding to a second rated heat absorption, and the operation of the motor is controlled according to a comparison result of the additional heat generation and the multiple rated heat absorptions, including: When the additional heat generation is less than or equal to the first rated heat absorption, controlling the motor to operate at the current frequency; When the first rated heat absorption is less than the additional heat generation and less than the second rated heat absorption, the motor is controlled to operate at a reduced frequency; When the additional heat generation is greater than the second rated heat absorption, the motor is controlled to stop for a second set time and then restart.

6. The motor over-temperature protection method according to any one of claims 1 to 5, characterized in that: Before determining the additional heat, the motor overtemperature protection method further includes: In the process of the clothes processing device operating the motor based on the working state, when the power determination value of the motor is greater than the rated power, determining the additional heat generation; Wherein: the power determination value is the actual power or average power of the motor during the process in which the clothes processing device operates the motor based on the working state.

7. The motor over-temperature protection method according to claim 6, characterized in that: When the motor power judgment value is ≤ rated power, the motor is controlled to run at the current frequency.

8. The motor over-temperature protection method according to claim 6, characterized in that: The motor overtemperature protection method comprises: The normal operating temperature of the motor at the initial ambient temperature and the rated power of the motor when the motor is operated in the working state of the laundry treating apparatus are determined according to the laundry treating mode of the laundry treating apparatus and the laundry weight.

9. A control device, characterized in that: It includes one or more processors and a non-temporary computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the motor overtemperature protection method according to any one of claims 1 to 8.

10. A clothes processing device, characterized in that: It adopts the motor over-temperature protection method described in any one of claims 1 to 8, or includes the control device described in claim 9.

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