Abnormality detection method and apparatus, and drying device
By monitoring the air temperature and rate of change of the drying equipment, the problem of difficulty in monitoring the operating status of AC fans has been solved, realizing safe and reliable fan anomaly detection and reducing costs.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NANJING ROBOROCK INNOVATION TECH CO LTD
- Filing Date
- 2025-12-15
- Publication Date
- 2026-07-16
AI Technical Summary
AC fans are difficult to monitor their operating status by speed, leading to safety hazards, and adding additional detection devices increases costs.
By monitoring the air temperature in the drying equipment, combined with the drying stage and temperature change rate or threshold, it can be determined whether the fan is abnormal and avoid overheating of the heating module.
It enables real-time monitoring of the fan status without increasing costs, ensuring the safety of the drying equipment and preventing damage to the heating module.
Smart Images
Figure CN2025142671_16072026_PF_FP_ABST
Abstract
Description
Abnormal detection methods, devices and drying equipment Cross-reference to related applications
[0001] This disclosure claims priority to Chinese patent application No. 202510053709.6, filed on January 13, 2025, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This disclosure belongs to the field of smart home appliance technology, specifically relating to an anomaly detection method, device, and drying equipment. Background Technology
[0003] Appliances with a drying function use a fan to dry clothes. During the drying process, the fan creates airflow, which in turn moves hot air to achieve drying. The fan's operating status can be monitored by its rotational speed, allowing for timely detection and handling of fan malfunctions.
[0004] To reduce costs, appliances with drying functions can use AC fans. Summary of the Invention
[0005] The embodiments of this disclosure provide an anomaly detection method, apparatus, and drying equipment.
[0006] In a first aspect, embodiments of this disclosure provide an anomaly detection method applied to a drying equipment, the drying equipment including a fan for driving the flow of hot air, the method comprising:
[0007] Based on the drying equipment being in drying mode, the air temperature inside the drying equipment is monitored;
[0008] Based on the air temperature, determine whether the fan is in an abnormal state.
[0009] In some embodiments, the drying equipment includes a condenser for absorbing moisture from the air in the drying equipment, and monitoring the air temperature in the drying equipment includes:
[0010] The inlet condenser temperature of the air entering the condenser is monitored. A temperature sensor is installed at the inlet of the condenser to collect the inlet condenser temperature.
[0011] The condenser temperature is taken as the air temperature.
[0012] In some embodiments, determining whether the fan is in an abnormal state based on the air temperature includes:
[0013] Determine the current drying stage of the drying equipment, which includes a drying heating stage and a drying stabilization stage;
[0014] Based on the air temperature and the drying stage, determine whether the fan is in an abnormal state.
[0015] In some embodiments, determining the current drying stage of the drying equipment includes:
[0016] Based on the fact that the air temperature is lower than the preset temperature value, the drying stage is determined to be the drying and heating stage;
[0017] Based on the fact that the air temperature is greater than or equal to the preset temperature value, the drying stage is determined to be a drying stability stage.
[0018] In some embodiments, determining the current drying stage of the drying equipment includes:
[0019] The duration of the drying mode operation of the drying equipment is timed;
[0020] If the time is less than or equal to the first time length, then the drying stage is determined to be the drying and heating stage;
[0021] If the time taken exceeds the first time length, the drying stage is determined to be the drying stable stage.
[0022] In some embodiments, determining whether the fan is in an abnormal state based on the air temperature and the drying stage includes:
[0023] Based on the fact that the drying stage is a drying and heating stage, the rate of change of the air temperature is determined;
[0024] Based on the fact that the rate of change is greater than a preset value, it is determined that the fan is in an abnormal state.
[0025] In some embodiments, determining whether the fan is in an abnormal state based on the air temperature and the drying stage includes:
[0026] Based on the fact that the drying stage is a stable drying stage, determine whether the air temperature is greater than the temperature threshold.
[0027] Based on the fact that the air temperature is greater than the temperature threshold, it is determined that the fan is in an abnormal state.
[0028] In some embodiments, the method further includes:
[0029] Since the fan is in an abnormal state, the drying equipment is controlled to cool down.
[0030] In some embodiments, the fan is an AC fan.
[0031] In some embodiments, the fan is a circulating fan in the drying equipment.
[0032] Secondly, embodiments of this disclosure provide an anomaly detection device applied to a drying equipment, the drying equipment including a fan for driving the flow of hot air, the device comprising:
[0033] A temperature monitoring module is used to monitor the air temperature in the drying equipment based on the drying equipment being in drying mode;
[0034] An anomaly detection module is used to determine whether the fan is in an abnormal state based on the air temperature.
[0035] In some embodiments, the drying equipment includes a condenser for absorbing moisture from the air in the drying equipment, and the temperature monitoring module includes:
[0036] The condenser inlet temperature monitoring submodule is used to monitor the condenser inlet temperature of the air entering the condenser. A temperature sensor is installed at the inlet of the condenser and is used to collect the condenser inlet temperature.
[0037] The air temperature determination submodule is used to take the above-mentioned condenser inlet temperature as the above-mentioned air temperature.
[0038] In some embodiments, the above-mentioned anomaly detection module includes:
[0039] The drying stage determination submodule is used to determine the current drying stage of the aforementioned drying equipment, which includes the drying heating stage and the drying stabilization stage.
[0040] The anomaly monitoring submodule is used to determine whether the above-mentioned fan is in an abnormal state based on the above-mentioned air temperature and the above-mentioned drying stage.
[0041] In some embodiments, the drying stage determination submodule includes:
[0042] The first determining unit is used to determine the drying stage as a drying and heating stage based on the fact that the air temperature is less than a preset temperature value.
[0043] The second determining unit is used to determine the drying stage as a drying stability stage based on the fact that the air temperature is greater than or equal to the preset temperature value.
[0044] In some embodiments, the drying stage determination submodule includes:
[0045] A timing unit is used to time the duration of the drying mode operation of the drying equipment.
[0046] The third determining unit is used to determine that the drying stage is a drying and heating stage when the time is less than or equal to the first time length.
[0047] The fourth determining unit is used to determine the drying stage as a drying stability stage when the time is greater than the first time length.
[0048] In some embodiments, the above-mentioned anomaly monitoring submodule includes:
[0049] The rate of change determination unit is used to determine the rate of change of the air temperature based on the fact that the drying stage is a drying heating stage.
[0050] The first abnormal state determination unit is used to determine that the above-mentioned fan is in an abnormal state based on the fact that the change rate is greater than a preset value.
[0051] In some embodiments, the above-mentioned anomaly monitoring submodule includes:
[0052] The temperature judgment unit is used to determine whether the air temperature is greater than the temperature threshold based on the fact that the above drying stage is a stable drying stage.
[0053] The second abnormal state determination unit is used to determine that the fan is in an abnormal state based on the fact that the air temperature is greater than the temperature threshold.
[0054] In some embodiments, the above-described apparatus further includes:
[0055] An anomaly handling module is used to control the drying equipment to cool down when the fan is in an abnormal state.
[0056] In some embodiments, the aforementioned fan is an AC fan.
[0057] In some embodiments, the aforementioned fan is a circulating fan in the aforementioned drying equipment.
[0058] Thirdly, embodiments of this disclosure provide a drying apparatus, including a fan, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in any of the embodiments of the first aspect.
[0059] Fourthly, embodiments of this disclosure provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in any of the embodiments of the first aspect.
[0060] Fifthly, embodiments of this disclosure provide a computer program product that, when run on a drying apparatus, causes the drying apparatus to perform the method described in any of the embodiments of the first aspect. Attached Figure Description
[0061] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0062] Figure 1 is a structural diagram of a washing and drying machine with a molecular sieve drum provided in an embodiment of this disclosure.
[0063] Figure 2 is a flowchart illustrating the steps of an anomaly detection method provided in an embodiment of this disclosure.
[0064] Figure 3 is a schematic diagram of the working process of a drying device provided in an embodiment of this disclosure.
[0065] Figure 4 is a flowchart illustrating another anomaly detection method provided in an embodiment of this disclosure.
[0066] Figure 5 is a flowchart illustrating another anomaly detection method provided in an embodiment of this disclosure.
[0067] Figure 6 is a schematic diagram of an anomaly detection device provided in an embodiment of this disclosure.
[0068] Figure 7 is a schematic diagram of a drying device provided in an embodiment of this disclosure. Detailed Implementation
[0069] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this disclosure. However, those skilled in the art will recognize that this disclosure may be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this disclosure with unnecessary detail.
[0070] Appliances with a drying function use a fan to dry clothes. During the drying process, the fan creates airflow, which in turn moves hot air to achieve drying. The fan's operating status can be monitored by its rotational speed, allowing for timely detection and handling of fan malfunctions.
[0071] The circulating fans used in general drying equipment are DC brushless motors. DC brushless motors can provide real-time feedback on fan speed, and the fan speed can be used to monitor whether the fan is malfunctioning.
[0072] To reduce costs, appliances with drying functions can use AC fans. However, AC fans cannot automatically report their speed, making it difficult to monitor the fan's operating status through speed measurement, which can easily lead to safety hazards.
[0073] Since monitoring the AC fan speed requires additional equipment to detect the fan speed, this increases manufacturing costs.
[0074] Based on this, the embodiments of this disclosure provide an anomaly detection method, which aims to solve the technical problem in the related art that it is difficult to monitor the rotational speed of AC fans, and therefore it is difficult to monitor the operation status of fans by rotational speed, which can easily lead to safety hazards. The method can detect fan anomalies based on temperature.
[0075] The technical solutions of this disclosure will be illustrated below through specific embodiments.
[0076] The method described in this disclosure can be applied to drying equipment with clothing drying function. In some embodiments, the drying equipment can be a dryer, a washer-dryer combo, etc. The drying equipment may include a heating module and a fan. The heating module can heat the air, and the fan can drive the heated air to circulate, thereby drying the clothes with the hot air.
[0077] Figure 1 is a structural diagram of a washer-dryer with a molecular sieve drum provided in an embodiment of this disclosure. As shown in Figure 1, the washer-dryer with a molecular sieve drum may include: a washing drum air inlet 1; an air inlet temperature sensor 2; a condenser 3; a condenser temperature sensor 3-1; a regeneration fan 4; a regeneration air duct 5; a drying heating element 6; a condensate water inlet 7; a circulating fan 8; a circulating fan duct 9; a molecular sieve turntable 10; a turntable motor 11; and a condensation valve 17.
[0078] When using a washer-dryer with a molecular sieve drum for drying clothes, two dehumidification cycles can exist. The first dehumidification cycle carries the humid air inside the drum into the regeneration cycle, which becomes the second dehumidification cycle. In the first dehumidification cycle, a circulating fan is used to create airflow, thereby driving the circulation of hot air. Dry, high-temperature gas enters the washing drum through the washing drum inlet 1, generating humid gas inside the drum. After condensation, the humid gas becomes air with lower humidity. Then, the humid gas enters the molecular sieve disc 10 through the circulating fan 8 and the circulating fan duct 9. After the molecular sieve disc 10 absorbs the moisture, it becomes dry air and enters the washing drum inlet 1.
[0079] The regeneration cycle can further absorb the moisture that was not completely absorbed in the first dehumidification cycle. The path is as follows: hot, humid air enters condenser 3, the condenser absorbs the moisture to obtain dry, low-temperature air, the dry, low-temperature air passes through regeneration fan 4 into drying heating tube 6, then through molecular sieve disc 10, and finally enters condenser 3 again to complete the cycle. This cycle is powered by regeneration fan 4. A condenser temperature sensor 3-1 is installed at the condenser inlet to monitor the temperature of the air entering the condenser. Based on this condenser temperature sensor 3-1, the completion of drying can be monitored.
[0080] In the device shown in Figure 1, the heating module may include a drying heating tube 6 and a molecular sieve rotating disk 10. The drying heating tube 6 heats the molecular sieve rotating disk 10, and the rotating disk motor 11 drives the molecular sieve rotating disk 10 to rotate, ensuring uniform heating and thus obtaining dry, high-temperature gas. A fan is used to create airflow, allowing the dry, high-temperature gas to pass through the clothes, achieving the purpose of drying the clothes.
[0081] When the fan malfunctions, it cannot drive airflow, causing the heating module to continuously heat the surrounding air. This results in a continuous rise in temperature near the heating module, which may damage the heating module if the temperature becomes too high.
[0082] Referring to Figure 2, a flowchart illustrating the steps of an anomaly detection method provided in this embodiment of the present disclosure is shown, which may specifically include the following steps:
[0083] S201: Based on the drying equipment being in drying mode, monitor the air temperature in the drying equipment.
[0084] The aforementioned drying equipment can be an appliance with drying function, such as a clothes dryer or a washer-dryer combo. The drying equipment may include a fan, which drives the circulation of hot air to dry the clothes. To reduce costs, the fan can be an AC fan. In some embodiments, the drying equipment can be a washer-dryer combo with a molecular sieve drum as shown in Figure 1. The fan to be tested can be the circulating fan in the washer-dryer combo with a molecular sieve drum.
[0085] When the drying equipment is in drying mode, abnormalities in the drying equipment's fan can be monitored. The drying equipment can automatically enter drying mode during operation, or it can directly enter drying mode based on user operation commands.
[0086] In some embodiments, the drying equipment can be a washer-dryer combo. The user can place clothes into the washer-dryer combo and then start it. The washer-dryer combo will then operate according to the parameters set by the user at startup. Based on the user's configuration, the washer-dryer combo can directly enter the drying mode to dry the clothes. Alternatively, the washer-dryer combo can perform the steps of water intake, washing, rinsing, spin-drying, drying, and cooling, first washing the clothes, then drying them, and finally entering the drying mode after the spin-drying process is complete.
[0087] In some embodiments, the presence of a drying mode can be determined by detecting whether the drying device is operating. In drying mode, the regeneration fan, circulating fan, heating module, etc., will all be activated. Based on the detection that any drying device is activated, it can be determined that the drying equipment is in drying mode.
[0088] Since the fan drives airflow, this airflow effectively dissipates heat from the heating module, preventing it from overheating and ensuring equipment safety. Therefore, in this embodiment, air temperature can be used to detect whether the fan is malfunctioning.
[0089] In some embodiments, the air temperature near the heating module can be directly detected to detect whether the fan is malfunctioning.
[0090] To avoid increasing costs, existing devices can be used for air temperature detection. In some embodiments, the washer-dryer with molecular sieve drum can include a condenser with a temperature sensor at its inlet. The condenser absorbs moisture from the air in the drying equipment; the high-temperature air entering the condenser condenses the moisture. The air entering the condenser is heated by a heating module to obtain high-temperature air. Therefore, fan malfunctions can be detected based on the temperature at the condenser inlet.
[0091] As an example, the drying equipment can continuously monitor the inlet condenser temperature of the air entering the condenser, which is collected by a temperature sensor and used as the air temperature.
[0092] In a washer-dryer with a molecular sieve drum, the temperature sensor is an existing device used to determine whether drying is complete. Therefore, air temperature can be collected without adding any additional equipment, and abnormal fan detection can be performed based on the air temperature, thus enabling abnormal monitoring without increasing costs.
[0093] S202: Determine whether the fan is in an abnormal state based on the air temperature.
[0094] In some embodiments, a maximum temperature can be set. When the air temperature is higher than the maximum temperature, it can be determined that the fan is in an abnormal state, thereby controlling the heating module to stop heating, allowing the drying equipment to cool down, and preventing the heating module from melting or other safety problems.
[0095] After the drying function is activated, the air temperature in the drying equipment will continue to rise. Once the temperature reaches a certain value, it can be maintained at a stable temperature, thereby preventing the heating module from overheating.
[0096] Therefore, drying equipment can have different operating stages. The first stage is the drying and heating stage, and the second stage is the drying and stabilization stage. During the drying and heating stage, the air temperature inside the drying equipment continuously rises. During the drying and stabilization stage, the air temperature inside the drying equipment can be maintained at a preset temperature.
[0097] The heating module operates in different modes at different stages. In some embodiments, the heating module heats continuously during the drying heating stage, while it heats intermittently during the drying stabilization stage. Therefore, different methods should be used for anomaly monitoring at different drying stages.
[0098] During the drying and heating phase, the temperature is constantly rising. Even if the heating module temperature is too high, the air temperature may not exceed the temperature threshold because the air temperature is transitioning from low to high. Therefore, the air temperature cannot be directly compared to the temperature threshold during the drying and heating phase. Based on this, embodiments of this disclosure can use the temperature change rate to determine whether the air temperature is abnormal. When the fan speed is normal and the airflow is stable, the heat generated by the heating element can be effectively transferred to the entire drying space, and the temperature will rise at a relatively stable rate. If the fan malfunctions, such as slowing down or reducing the airflow, the circulation of hot air will be affected, causing heat to accumulate in some areas of the drying chamber while other areas lack sufficient heat, thus resulting in an abnormal temperature change rate. Therefore, the temperature change rate can be used to determine whether the fan is functioning properly during the drying and heating phase.
[0099] During the drying and heating phase, if the temperature change rate is within the normal range, the fan can be determined to be in normal condition. If the temperature change rate is within the abnormal range, the fan can be determined to be in abnormal condition.
[0100] When calculating the temperature change rate, the initial temperature and the current temperature can be calculated, as well as the time from the start of the drying function to the current time. The ratio of the temperature difference to the time is used as the temperature change rate.
[0101] In some embodiments, a preset value k can be set. If the temperature change rate is less than the preset value k, the surface air temperature is in a normal rising phase, and therefore the fan is in normal operation. If the temperature change rate is greater than or equal to the preset value k, the surface air temperature is rising too rapidly, and therefore the fan is in an abnormal operation. In some embodiments, k can be 5°C / 20 seconds.
[0102] Since the drying stage is a stable drying stage with minimal air temperature changes, the rate of temperature change cannot be used to detect fan malfunctions.
[0103] During the drying process, the air temperature during the stabilization phase can be a preset value. This temperature can be set according to the fabric of the clothing or the required drying time. If the air temperature is too high, it indicates that the air circulation provided by the fan is affected. Therefore, during the stabilization phase, abnormal fan conditions can be detected by monitoring the air temperature and temperature thresholds.
[0104] When the drying equipment is in the stable drying stage, it can be determined whether the air temperature is greater than a temperature threshold. If the air temperature is greater than the temperature threshold, it can be determined that the fan is in an abnormal state. Assuming the temperature threshold is T, if the air temperature is greater than T, it can be determined that the fan is in an abnormal state. If the air temperature is less than or equal to T, it can be determined that the fan is in a normal state. Furthermore, the temperature threshold may differ depending on the drying mode. In some embodiments, the temperature threshold can be set to 100°C in mixed mode and 45°C in wool mode. In summary, the temperature threshold can be determined based on the material of the clothing to be dried or the drying mode of the drying equipment.
[0105] Based on the above, the drying equipment needs to determine its current drying stage. In some embodiments, the drying stage can be determined based on the air temperature. In some embodiments, the drying stage is determined to be a drying heating stage if the air temperature is lower than a preset temperature value; and a drying stabilization stage is determined to be a drying stage if the air temperature is greater than or equal to the preset temperature value. Furthermore, the preset temperature value may differ depending on the drying mode. In some embodiments, the preset temperature may be set to 45°C when the drying equipment is in a mixed mode, and to 35°C when the drying equipment is in a wool mode. In summary, the preset temperature value can be determined based on the material of the clothing to be dried or the drying mode of the drying equipment.
[0106] In some embodiments, the drying stage can be determined based on the start time of the drying mode. In some embodiments, timing can start from the start of the drying mode. If the timing duration is less than or equal to a first time length, the drying stage can be determined as a drying heating stage; if the timing duration is greater than the first time length, the drying stage can be determined as a drying stabilization stage. In some embodiments, the first time length is related to the weight of the clothes to be dried and the drying mode of the drying equipment. In some embodiments, when the clothes to be dried weigh 3 kg, the first time length can be set to 30 minutes when the drying equipment is in a mixed mode, and 18 minutes when the drying equipment is in a wool mode. In summary, the first time length can be determined based on the weight of the clothes to be dried, the material of the clothes to be dried, or the drying mode.
[0107] To prevent the heating module from melting or other safety issues, the drying equipment can be controlled to enter cooling mode when the fan is in an abnormal state. In some embodiments, the heating module can be controlled to stop heating.
[0108] In the embodiments of this disclosure, abnormal detection of the fan can be based on air temperature, thereby ensuring the safety of the drying equipment. Furthermore, since the drying equipment itself contains a temperature sensor, no additional device is needed to collect air temperature data. In the embodiments of this disclosure, without adding an additional speed measurement module, temperature changes can be monitored in real time, and the fan's operating status can be determined based on the temperature value, ensuring the safe operation of the drying system.
[0109] It should be noted that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure.
[0110] To better illustrate the solutions in the embodiments of this disclosure, the following describes the solution using a method for detecting fan malfunctions in a washer-dryer with a molecular sieve drum. The circulating fan in the washer-dryer with a molecular sieve drum can be an AC fan. Based on the method in the embodiments of this disclosure, malfunctions in the circulating fan of the washer-dryer with a molecular sieve drum can be detected.
[0111] Figure 3 is a schematic diagram of the working process of a drying device provided in an embodiment of this disclosure. The drying device in Figure 3 is a washer-dryer combo with a molecular sieve drum. Figure 3 shows the complete washing and drying operation process. During the drying process, the heating module, circulating fan, and other components start working, and the normal operation of the circulating fan can be detected in real time. When using the washer-dryer combo with a molecular sieve drum, the user can put the clothes into the machine and then start it. The machine will then operate according to the parameters set by the user at startup. Based on the user's configuration, the machine can directly enter the drying mode to dry the clothes. Alternatively, the machine can perform the steps of water intake, washing, rinsing, dehydration, drying, and cooling, first washing the clothes and then drying them. After the dehydration process is completed, the machine enters the drying mode.
[0112] Figure 4 is a flowchart illustrating another anomaly detection method provided in this embodiment. Figure 4 shows anomaly detection of the circulating fan during the drying and heating stage of the integrated washer-dryer with molecular sieve drum. As shown in Figure 4, during the drying and heating stage, the heating module, turntable motor, regeneration fan, circulating fan, and other drying-related electrical components of the integrated washer-dryer with molecular sieve drum can operate. At the start of drying, the initial temperature of the condenser can be recorded, and then the drying-related components are turned on to begin drying. When the circulating fan malfunctions, the condenser temperature rises very rapidly, which is the aforementioned temperature change rate. Therefore, the condenser temperature can be monitored in real time and the condenser temperature rise rate can be calculated. Based on whether the condenser temperature rise slope is greater than a set value k, the circulating fan is in an abnormal state, and the integrated washer-dryer with molecular sieve drum can enter cooling mode. Based on whether the condenser temperature rise slope is less than or equal to the set value k, the circulating fan is in a normal state, and the integrated washer-dryer with molecular sieve drum can continue drying.
[0113] Figure 5 is a flowchart illustrating another anomaly detection method provided in this embodiment. Figure 5 shows anomaly detection of the circulating fan during the stabilization drying stage of the molecular sieve drum washer-dryer. Because the condenser inlet temperature is already relatively high during the stabilization drying stage, detecting anomalies in the circulating fan based on the condenser inlet temperature rise slope may fail to detect abnormal fan conditions in a timely manner. Therefore, a maximum condenser inlet temperature T can be set, which is the aforementioned temperature threshold. Anomaly detection of the fan is performed by real-time monitoring of whether the condenser inlet temperature is greater than the maximum condenser inlet temperature T. If the condenser inlet temperature is greater than the maximum condenser inlet temperature T, the circulating fan is in an abnormal state, and the molecular sieve drum washer-dryer can enter cooling mode. If the condenser inlet temperature is less than or equal to the maximum condenser inlet temperature T, the circulating fan is in a normal state, and the molecular sieve drum washer-dryer can continue drying.
[0114] In this embodiment, the drying system can monitor temperature changes in real time without adding an additional speed measurement module. The operating status of the fan is determined by the temperature value, preventing the heating module of the drying equipment from melting or other safety issues, thus ensuring the safe operation of the drying system. This embodiment determines whether the fan is working properly by temperature changes without adding any extra cost.
[0115] Referring to Figure 6, a schematic diagram of an anomaly detection device provided in an embodiment of this disclosure is shown. This device is applied to a drying equipment, which includes a fan and specifically may include a temperature monitoring module 61 and an anomaly detection module 62, wherein:
[0116] Temperature monitoring module 61 is used to monitor the air temperature in the drying equipment based on the drying equipment being in drying mode;
[0117] The anomaly detection module 62 is used to determine whether the fan is in an abnormal state based on the air temperature.
[0118] In some embodiments, the drying equipment includes a condenser for absorbing moisture from the air in the drying equipment, and the temperature monitoring module 61 includes:
[0119] The condenser inlet temperature monitoring submodule is used to monitor the condenser inlet temperature of the air entering the condenser. A temperature sensor is installed at the inlet of the condenser and is used to collect the condenser inlet temperature.
[0120] The air temperature determination submodule is used to take the above-mentioned condenser inlet temperature as the above-mentioned air temperature.
[0121] In some embodiments, the anomaly detection module 62 includes:
[0122] The drying stage determination submodule is used to determine the current drying stage of the aforementioned drying equipment, which includes the drying heating stage and the drying stabilization stage.
[0123] The anomaly monitoring submodule is used to determine whether the above-mentioned fan is in an abnormal state based on the above-mentioned air temperature and the above-mentioned drying stage.
[0124] In some embodiments, the drying stage determination submodule includes:
[0125] The first determining unit is used to determine the drying stage as a drying and heating stage based on the fact that the air temperature is less than a preset temperature value.
[0126] The second determining unit is used to determine the drying stage as a drying stability stage based on the fact that the air temperature is greater than or equal to the preset temperature value.
[0127] In some embodiments, the drying stage determination submodule includes:
[0128] A timing unit is used to time the duration of the drying mode operation of the drying equipment.
[0129] The third determining unit is used to determine that the drying stage is a drying and heating stage when the time is less than or equal to the first time length.
[0130] The fourth determining unit is used to determine the drying stage as a drying stability stage when the time is greater than the first time length.
[0131] In some embodiments, the above-mentioned anomaly monitoring submodule includes:
[0132] The rate of change determination unit is used to determine the rate of change of the air temperature based on the fact that the drying stage is a drying heating stage.
[0133] The first abnormal state determination unit is used to determine that the above-mentioned fan is in an abnormal state based on the fact that the change rate is greater than a preset value.
[0134] In some embodiments, the above-mentioned anomaly monitoring submodule includes:
[0135] The temperature judgment unit is used to determine whether the air temperature is greater than the temperature threshold based on the fact that the above drying stage is a stable drying stage.
[0136] The second abnormal state determination unit is used to determine that the fan is in an abnormal state based on the fact that the air temperature is greater than the temperature threshold.
[0137] In some embodiments, the above-described apparatus further includes:
[0138] An anomaly handling module is used to control the drying equipment to cool down when the fan is in an abnormal state.
[0139] In some embodiments, the aforementioned fan is an AC fan.
[0140] In some embodiments, the aforementioned fan is a circulating fan in the aforementioned drying equipment.
[0141] As the apparatus embodiments are basically similar to the method embodiments, they are described in a relatively simple manner. For relevant details, please refer to the description in the method embodiment section.
[0142] Figure 7 is a schematic diagram of a drying device provided in an embodiment of this disclosure. As shown in Figure 7, the drying device 7 of this embodiment includes: at least one processor 70 (only one is shown in Figure 7), a memory 71, and a computer program 72 stored in the memory 71 and executable on the at least one processor 70. When the processor 70 executes the computer program 72, it implements the steps in any of the above-described method embodiments.
[0143] The drying equipment 7 can be a dryer, a washer-dryer combo, or other similar equipment. This drying equipment may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art will understand that Figure 7 is merely an example of the drying equipment 7 and does not constitute a limitation on the drying equipment 7. It may include more or fewer components than shown, or combine certain components, or use different components. In some embodiments, the drying equipment 7 may also include input / output devices, network access devices, etc.
[0144] The processor 70 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.
[0145] In some embodiments, the memory 71 may be an internal storage unit of the drying equipment 7. In other embodiments, the memory 71 may be a hard disk or RAM of the drying equipment 7. In still other embodiments, the memory 71 may be an external storage device of the drying equipment 7. In some embodiments, the memory 71 may be a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the drying equipment 7. Furthermore, the memory 71 may include both internal storage units and external storage devices of the drying equipment 7. The memory 71 is used to store operating systems, applications, bootloaders, data, and other programs, such as the program code of computer programs. The memory 71 can also be used to temporarily store data that has been output or will be output.
[0146] This disclosure also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the various method embodiments described above.
[0147] This disclosure provides a computer program product that, when run on a drying device, causes the drying device to implement the steps described in the various method embodiments above.
[0148] The embodiments described above are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be included within the protection scope of this disclosure.
Claims
1. An anomaly detection method, characterized in that, Applied to drying equipment, the drying equipment including a fan for driving the flow of hot air, the method includes: Based on the drying equipment being in drying mode, the air temperature inside the drying equipment is monitored; Based on the air temperature, determine whether the fan is in an abnormal state.
2. The method as described in claim 1, characterized in that, The drying equipment includes a condenser for absorbing moisture from the air in the drying equipment, and the monitoring of the air temperature in the drying equipment includes: The inlet condenser temperature of the air entering the condenser is monitored. A temperature sensor is installed at the inlet of the condenser to collect the inlet condenser temperature. The condenser temperature is taken as the air temperature.
3. The method as described in claim 1 or 2, characterized in that, The step of determining whether the fan is in an abnormal state based on the air temperature includes: Determine the current drying stage of the drying equipment, which includes a drying heating stage and a drying stabilization stage; Based on the air temperature and the drying stage, determine whether the fan is in an abnormal state.
4. The method as described in claim 3, characterized in that, Determining the current drying stage of the drying equipment includes: Based on the fact that the air temperature is lower than the preset temperature value, the drying stage is determined to be the drying and heating stage; Based on the fact that the air temperature is greater than or equal to the preset temperature value, the drying stage is determined to be a drying stability stage.
5. The method as described in claim 3, characterized in that, Determining the current drying stage of the drying equipment includes: The duration of the drying mode operation of the drying equipment is timed; If the time taken is less than or equal to the first time length, then the drying stage is determined to be the drying and heating stage. If the time taken is longer than the first time length, then the drying stage is determined to be the drying stable stage.
6. The method as described in claim 3, characterized in that, The step of determining whether the fan is in an abnormal state based on the air temperature and the drying stage includes: Based on the fact that the drying stage is a drying and heating stage, the rate of change of the air temperature is determined; Based on the fact that the rate of change is greater than a preset value, it is determined that the fan is in the abnormal state.
7. The method as described in claim 3, characterized in that, The step of determining whether the fan is in an abnormal state based on the air temperature and the drying stage includes: Based on the fact that the drying stage is a stable drying stage, determine whether the air temperature is greater than the temperature threshold. Based on the fact that the air temperature is greater than the temperature threshold, it is determined that the fan is in the abnormal state.
8. The method as described in claim 1, characterized in that, The method further includes: Based on the fact that the fan is in the abnormal state, the drying equipment is controlled to cool down.
9. The method as described in claim 8, characterized in that, The fan is an AC fan.
10. The method as described in claim 9, characterized in that, The fan is the circulating fan in the drying equipment.
11. An anomaly detection device, characterized in that, Applied to drying equipment, the drying equipment includes a fan for driving the flow of hot air, and the device includes: A temperature monitoring module is used to monitor the air temperature in the drying equipment based on the drying equipment being in drying mode; An anomaly detection module is used to determine whether the fan is in an abnormal state based on the air temperature.
12. The anomaly detection device as claimed in claim 11, wherein the drying equipment includes a condenser for absorbing moisture from the air in the drying equipment, and the temperature monitoring module includes: The condenser inlet temperature monitoring submodule is used to monitor the condenser inlet temperature of the air entering the condenser. A temperature sensor is installed at the condenser inlet and is used to collect the condenser inlet temperature. An air temperature determination submodule is used to take the condenser inlet temperature as the air temperature.
13. The anomaly detection device as described in claim 11 or 12, wherein the anomaly detection module comprises: The drying stage determination submodule is used to determine the current drying stage of the drying equipment, which includes a drying heating stage and a drying stabilization stage. An anomaly monitoring submodule is used to determine whether the fan is in an abnormal state based on the air temperature and the drying stage.
14. The anomaly detection device as described in claim 13, wherein the drying stage determination submodule comprises: The first determining unit is used to determine that the drying stage is a drying and heating stage based on the fact that the air temperature is less than a preset temperature value. The second determining unit is used to determine the drying stage as a drying stability stage based on the air temperature being greater than or equal to the preset temperature value.
15. The anomaly detection device as described in claim 13, wherein the drying stage determination submodule comprises: A timing unit is used to time the duration of the drying mode operation of the drying equipment. The third determining unit is used to determine that the drying stage is a drying and heating stage when the time is less than or equal to the first time length. The fourth determining unit is used to determine the drying stage as a drying stability stage when the time is greater than the first time length.
16. The anomaly detection device as described in claim 13, wherein the anomaly monitoring submodule comprises: The rate of change determination unit is used to determine the rate of change of the air temperature based on the fact that the drying stage is a drying and heating stage; The first abnormal state determination unit is used to determine that the fan is in an abnormal state based on the change rate being greater than a preset value.
17. The anomaly detection device as described in claim 13, wherein the anomaly monitoring submodule comprises: The temperature judgment unit is used to determine whether the air temperature is greater than a temperature threshold based on the fact that the drying stage is a stable drying stage. The second abnormal state determination unit is used to determine that the fan is in an abnormal state based on the air temperature being greater than the temperature threshold.
18. The anomaly detection device as claimed in claim 11, further comprising: An anomaly handling module is used to control the drying equipment to cool down when the fan is in an abnormal state.
19. The anomaly detection device as described in claim 18, wherein the fan is an AC fan.
20. The anomaly detection device as described in claim 19, wherein the fan is the circulating fan in the drying equipment.
21. A drying apparatus, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The drying equipment includes a fan, and the processor, when executing the computer program, implements the anomaly detection method as described in any one of claims 1-10.
22. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the anomaly detection method as described in any one of claims 1-10.
23. A computer program product, characterized in that, When the computer program product is run on the drying equipment, the drying equipment performs the anomaly detection method as described in any one of claims 1-10.