Drying apparatus and control method of drying apparatus

Abstract

This invention provides a drying device and a control method for the drying device. The drying device includes a contact humidity acquisition module, a non-contact humidity acquisition module, a control module, and a drying module. The contact humidity acquisition module is used to acquire a first humidity level inside the drying drum. The non-contact humidity acquisition module is used to acquire a second humidity level inside the drying drum. The control module is used to determine a target drying program based on the first and second humidity levels, and control the drying module to dry the load according to the target drying program. This invention solves the problem of uneven drying in existing drying devices and control methods.

Description

Technical Field

[0001] This invention relates to the field of drying equipment, and specifically provides a drying device and a control method for the drying device. Background Technology

[0002] Existing drying equipment uses a single method for determining dryness and has a simple control system, which easily leads to problems such as incomplete drying, uneven drying, or over-drying, and has a low tolerance for error. For example, in daily life, the loads dried by drying equipment include items of various sizes. It is not easy to detect the humidity of small loads, and it is also difficult to detect the internal humidity of large loads when they are clumped together, which can easily result in the inside of the load not being dried or the outside being over-dried.

[0003] It is evident that existing drying equipment and its control methods suffer from uneven drying. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art. The purpose is to provide a drying device that improves the accuracy of humidity detection inside the drying drum by combining a contact humidity acquisition module and a non-contact humidity acquisition module. The invention also provides a control method for the drying device that determines the target drying program based on the humidity values ​​collected by the contact humidity acquisition module and the non-contact humidity acquisition module, and controls the drying module to dry the load according to the target drying program, thereby achieving precise drying of the load and reducing uneven drying.

[0005] The primary objective of this invention is to provide a drying device, employing the following technical solution:

[0006] A drying device includes a contact humidity acquisition module, a non-contact humidity acquisition module, a control module, and a drying module; the contact humidity acquisition module is used to acquire a first humidity inside the drying drum; the non-contact humidity acquisition module is used to acquire a second humidity inside the drying drum; the control module is used to determine a target drying program based on the first humidity and the second humidity, and control the drying module to dry the load according to the target drying program.

[0007] The second objective of this invention is to provide a control method for a drying device, applied to the aforementioned drying device, and employing the following technical solution:

[0008] A method for controlling a drying device includes: determining a target drying program based on a first humidity level collected by a contact humidity acquisition module and a second humidity level collected by a non-contact humidity acquisition module, and controlling the drying module to dry the load according to the target drying program.

[0009] In summary, the present invention provides a drying device and a control method for the drying device, which has the following advantages compared with the prior art:

[0010] By combining contact and non-contact humidity acquisition modules, the system simultaneously acquires humidity values ​​from both the load surface and the overall load, improving the accuracy of humidity detection. The control module determines the target drying program based on the first humidity value acquired by the contact module and the second humidity value acquired by the non-contact module. It then controls the drying module to dry the load according to this target program. The drying program can be adjusted based on humidity changes, allowing for different levels of drying and specifically improving the uniformity of drying during each stage, thus reducing issues such as incomplete drying, uneven drying, and over-drying. Furthermore, the system uses multiple dimensions, including humidity difference, temperature difference, and outlet air temperature, to determine whether the load is fully dried, making the timing of shutting off the drying module more precise and reducing uneven drying. Finally, a fault diagnosis component is incorporated into the overall drying process to promptly detect sensor malfunctions, improving safety. Attached Figure Description

[0011] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0012] In the attached diagram:

[0013] Figure 1 This is a flowchart of the drying equipment provided by the present invention;

[0014] Figure 2 This is a drying process diagram of a drying device provided by the present invention;

[0015] Figure 3 This is a drying process diagram of another drying device provided by the present invention;

[0016] Figure 4 This is a drying process diagram of another drying device provided by the present invention.

[0017] Figure 5 This is a drying process diagram of another drying device provided by the present invention.

[0018] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] This invention provides a drying device, including a contact humidity acquisition module, a non-contact humidity acquisition module, a control module, and a drying module;

[0022] The contact humidity acquisition module is used to acquire the initial humidity inside the drying drum.

[0023] The non-contact humidity acquisition module is used to acquire the second humidity inside the drying drum;

[0024] The control module is used to determine a target drying program based on the first humidity and the second humidity, and to control the drying module to dry the load according to the target drying program.

[0025] Specifically, the drying equipment can be for various purposes. For example, this embodiment can be discussed using a heat pump dryer as an example, with clothing as the load.

[0026] In an embodiment where the drying equipment is a heat pump dryer, the drying equipment further includes a housing, a drying drum, and an air duct, with the housing covering the outside of the drying drum; the air duct connects to the drying drum and guides airflow. The drying module specifically includes a heat pump system and a ventilation system; the heat pump system includes a compressor, an evaporator, a condenser, and valves.

[0027] Specifically, the contact humidity acquisition module uses a resistive humidity sensor, while the non-contact humidity acquisition module uses a capacitive humidity sensor. Both the contact and non-contact humidity sensors are installed inside the drying drum to collect humidity values ​​within the drum.

[0028] It should be noted that contact humidity sensors acquire the humidity value of the load surface when in contact with the load, and use this value as the initial humidity inside the drying drum. However, due to inconsistencies in humidity values ​​when the load clumps together, or because the contact humidity sensor cannot reach small load items, there is an error between the initial humidity and the actual humidity inside the drying drum. Non-contact humidity sensors convert ambient humidity information into a digital humidity value, i.e., the second humidity. However, when the load clumps together, internal water vapor cannot evaporate, resulting in an error between the air humidity inside the drying drum and the actual humidity of the clothes. Therefore, both using contact and non-contact humidity sensors alone result in inaccurate humidity values. Combining the two, the contact humidity sensor directly reflects the humidity of the load surface, while the non-contact humidity sensor reflects the humidity conditions inside the drying drum from a macroscopic perspective. This allows for data complementarity and verification, resulting in an accurate humidity value. This avoids measurement errors caused by the limitations of a single sensor and provides a comprehensive understanding of the drying process.

[0029] like Figure 1 As shown, Figure 1 This is a flowchart illustrating the operation of a drying device. In this embodiment, the drying device is a heat pump dryer. Figure 1 The upper cylindrical part is the drying drum 1. The contact humidity sensor 2 and the non-contact humidity sensor 3 are set at both ends of a diameter of the circular cross section of the drying drum. That is, the contact humidity sensor 2 and the non-contact humidity sensor 3 are symmetrically arranged in the radial direction. In this way, when the contact humidity sensor 2 comes into contact with the clothes, it does not affect the non-contact humidity sensor 3 from obtaining the ambient humidity, thus obtaining the first humidity and the second humidity at the same time. Below the drying drum 1 is the air circulation process in the heat pump system. It can be seen that in this embodiment, the air flows counterclockwise through the evaporator 4, the compressor 5, the condenser 6 and the throttling valve 7.

[0030] Specifically, the target drying program includes multiple preset drying programs used to dry the load to different degrees under different humidity conditions, making the drying process more targeted and precise, thereby reducing uneven drying.

[0031] Furthermore, the control module is also used to determine the effective humidity value inside the drying drum based on the first humidity and the second humidity; and to determine the target drying program based on the correspondence between the effective humidity value and the preset humidity.

[0032] Specifically, in this embodiment, the first humidity and the second humidity are monitored in real time.

[0033] Specifically, the effective humidity value is obtained by weighted averaging of the first and second humidity levels. The weighting coefficients for the first and second humidity levels can be set based on experimental data, for example, based on the accuracy of the first and second humidity levels. Assuming the accuracy of the first humidity is greater than that of the second humidity, the weighting coefficient for the first humidity can be set to 0.6, and the weighting coefficient for the second humidity to 0.4. It should be noted that in this embodiment, the preset humidity needs to be adjusted accordingly.

[0034] RH (RMS) = 0.6 × RH (resistance) + 0.4 × RH (capacitance)

[0035] Wherein, RH (RMS) is the effective value of humidity, RH (resistance) is the first humidity, and RH (capacitance) is the second humidity.

[0036] Furthermore, the target drying program includes a preset first drying program, a second drying program, and a third drying program. The control parameters are different in different target drying programs, including air volume, temperature, and / or the working mode of the drying drum.

[0037] Specifically, the control module is also used to determine the target drying program as a first drying program if the effective humidity value is greater than the first preset humidity; to determine the target drying program as a second drying program if the effective humidity value is less than the first preset humidity but greater than the second preset humidity; and to determine the target drying program as a third drying program if the effective humidity value is less than the second preset humidity but greater than the third preset humidity.

[0038] Specifically, in this embodiment, the first drying process, the second drying process, and the third drying process are performed in a specific order during the overall drying process, and the first preset humidity is greater than the second preset humidity, which in turn is greater than the third preset humidity. For example, the first preset humidity is 50%, the second preset humidity is 30%, and the third preset humidity is 15%.

[0039] like Figure 2 As shown, Figure 2This invention provides a drying process flow diagram for a drying device. When the humidity is greater than the first preset humidity, it indicates that the overall humidity of the load is relatively high, requiring a drying mode with strong airflow and high temperature to roughly dry the load. When the humidity is less than the first preset humidity and less than the second preset humidity, it is in the main drying stage. While drying the load, the uniformity of drying should be improved. Therefore, the airflow and temperature should be adjusted to avoid over-drying the surface of the load. At the same time, the working mode of the drying drum should be adjusted to increase the number of times the load tumbles in the drying drum and reduce clumping. When the humidity is between the second and third preset humidity, the overall humidity of the load is greatly reduced, and the drying mode needs to be adjusted appropriately to complete the overall drying without damaging the load.

[0040] It should be noted that in this embodiment, the first, second, and third drying processes are performed sequentially. In other embodiments, not all three processes may be performed. For example, in practical applications, at least one drying stage can be selected based on the load humidity. If the effective humidity value detected at the start of the drying process is less than the second preset humidity but greater than the third preset humidity, the third drying process is executed directly.

[0041] It should be noted that before determining the target drying program, the control module also calculates the humidity difference based on the first humidity and the second humidity, where the humidity difference is an absolute value. If the humidity difference is greater than the calibration humidity difference, a self-calibration program is initiated to calibrate the contact humidity sensor and / or the non-contact humidity sensor. For example, assuming the calibration humidity difference is 3%, if the humidity difference is 5%, it indicates a large difference in the humidity detected by the contact humidity sensor and the non-contact humidity sensor, which may be due to inaccurate data acquisition by the humidity acquisition module, thus requiring calibration.

[0042] Furthermore, the drying equipment also includes a temperature acquisition module for acquiring the inlet and outlet temperatures of the drying cylinder; the control module is also used to, when the target drying program is the second drying program, obtain the current drying time and the initial weight of the load; determine the dynamic airflow based on the current drying time, the inlet temperature, and the outlet temperature, and control the drying module to adjust the airflow to the dynamic airflow; determine the dynamic temperature based on the initial weight of the load, and control the drying module to adjust the temperature to the dynamic temperature.

[0043] Specifically, the temperature acquisition module is installed in the air duct, including a first temperature sensor located at the air inlet of the drying cylinder and a second temperature sensor located at the air outlet. Both the first and second temperature sensors can be NTC thermistors.

[0044] exist Figure 1In the embodiment shown, the first temperature sensor 8 is NTC1, which is installed in the air duct close to the air inlet of the drying cylinder 1, and the second temperature sensor 9 is NTC2, which is installed in the air duct close to the air outlet of the drying cylinder 1.

[0045] Specifically, airflow control can include strong wind mode, weak wind mode, and airflow adjustment mode; temperature control can include high temperature mode, low temperature mode, and temperature adjustment mode; drying drum control can include a first rotation mode, a second rotation mode, and a third rotation mode. Specific control parameters for different target drying programs can be set based on experimental data. For example: the airflow in strong wind mode is 1200 m² / h, and in weak wind mode it is 800 m² / h; the temperature in high temperature mode is 63-67℃, and in low temperature mode it is 54-56℃; the first rotation mode alternates between "30 seconds forward rotation and 5 seconds reverse rotation," the second rotation mode alternates between "45 seconds forward rotation and 10 seconds reverse rotation" with an additional 5 seconds of reverse rotation time every 2 minutes, and the third rotation mode has a forward / reverse rotation time ratio of 3:1. In particular, because the second drying program needs to maintain drying uniformity during load drying, it is necessary to increase the reverse rotation time of the load in the drying drum. The second rotation mode of the drying drum can irregularly rotate the load, increasing the number of load movements and reducing clumping.

[0046] Specifically, using the above example, the first drying program uses a strong wind mode, a high temperature mode, and a first rotation mode; the second drying program uses a second rotation mode; and the third drying program uses a weak wind mode, a low temperature mode, and a third rotation mode.

[0047] In one embodiment, if the drying equipment is a clothes dryer, the clothing needs to be protected. For example... Figure 3 As shown, Figure 3 This is a flowchart illustrating the workflow of a clothes dryer. The control module is also used to automatically adjust the balancing parameters of the drying module if a sudden change in drum torque is detected. As an example, when a current exceeding 3.6A is detected for more than 5 seconds, a sudden change in drum torque is determined, and the drum may have jammed. At this point, a command is issued to reverse the drum for 10 seconds, automatically adjusting the balancing parameters to restore drum operation and prevent damage to clothes.

[0048] Specifically, in the second drying process, the control module is also used to determine a dynamic temperature difference threshold based on the current drying time, the inlet temperature of the drying cylinder, and the outlet temperature. Based on the temperature difference and the dynamic temperature threshold, it then determines the dynamic airflow. The formula for calculating the dynamic airflow is:

[0049] V=1000+50×(ΔT-ΔT_threshold)

[0050] Where V is the dynamic air volume, ΔT is the temperature difference, and ΔT_threshold is the dynamic temperature difference threshold.

[0051] The formula for calculating the dynamic temperature difference threshold is:

[0052] ΔT_threshold=0.5×(40-0.1t)

[0053] Where t is the current drying time.

[0054] Specifically, in the temperature regulation mode, the control module is also used to determine the dynamic temperature based on the initial weight of the load and control the drying module to adjust the temperature to the dynamic temperature. The dynamic temperature calculation formula is:

[0055] T = 60 + 0.2 × (w - 3)

[0056] Where T is the dynamic temperature and w is the initial weight of the load in kilograms.

[0057] Furthermore, the control module is also used to determine whether the operating conditions of the drying equipment meet the preset drying conditions based on the first humidity, the second humidity, the air inlet temperature value, and the air outlet temperature value; if the determination result is yes, then control the drying module to shut down.

[0058] Furthermore, if the judgment result is negative, the drying module is controlled to dry the load according to the third drying program.

[0059] like Figure 4 As shown, Figure 4 This is a drying process diagram for another drying device provided by the present invention. In this embodiment, if the operating conditions of the drying device meet the preset drying conditions, the drying module is controlled to shut down, and the drying process ends. If the operating conditions of the drying device do not meet the preset drying conditions, the process returns to the previous drying stage and continues to dry the load according to the third drying degree until the determination result is to end the drying process.

[0060] In another embodiment, the control module is further configured to control the drying module to activate reverse ventilation mode if the detected outlet temperature is greater than or equal to a preset temperature. The preset temperature can be set based on experimental data, for example, 68°C. Since hot air carries away water vapor from the load as it flows through the drying drum, the outlet temperature will be lower than the inlet temperature. If the outlet temperature is greater than or equal to the preset temperature, it indicates that the temperature inside the drying drum is higher than the preset temperature, which may damage the clothing. During normal ventilation, hot air flows in a specific direction within the drying drum. Reverse ventilation changes the flow path and direction of the hot air, altering the temperature distribution within the drying drum. This allows the heat that was originally concentrated in certain areas to be more widely dispersed, thereby helping to reduce the temperature of locally high-temperature areas.

[0061] It should be noted that reverse ventilation has a higher priority than the currently executing target drying program. Reverse ventilation is relative to the current ventilation direction, and the specific reverse ventilation duration can be set as needed or according to the outlet temperature. For example, if the outlet temperature is greater than or equal to 68℃, then reverse ventilation will last for 10 seconds.

[0062] Furthermore, the control module is also used to determine the temperature difference based on the inlet temperature value and the outlet temperature value; determine the outlet temperature fluctuation based on the outlet temperature value; and determine whether the operating conditions of the drying equipment meet the preset drying conditions based on the effective humidity value, the temperature difference, and the outlet temperature fluctuation.

[0063] Specifically, the calculation method for the effective value of humidity is as described above. It can be determined by the weighted average method, thereby improving the accuracy of the effective value of humidity.

[0064] Specifically, the preset drying conditions include at least the following: the effective humidity value is less than or equal to the fourth preset humidity; the temperature difference value is less than or equal to the preset temperature difference value and lasts for a fifth preset time; and the temperature fluctuation at the air outlet is less than or equal to the preset temperature fluctuation. As an example, the fourth preset humidity can be 8%, the preset temperature difference value can be 2℃, the fifth preset time can be 5 minutes, and the preset temperature fluctuation can be the air outlet temperature fluctuating up or down by 0.5℃ within 1 minute.

[0065] It should be noted that in this embodiment, if all three preset conditions are met, the operating condition of the drying equipment is determined to meet the preset drying conditions; in another embodiment, if at least one of the three preset conditions is met, the operating condition of the drying equipment is determined to meet the preset drying conditions. Specific settings can be configured as needed. Judging based on three dimensions—effective humidity value, temperature difference, and temperature fluctuation at the air outlet—can improve the accuracy of the drying result, prevent the drying equipment from shutting down when the load is not fully dried or the drying is uneven, and improve the error tolerance.

[0066] Furthermore, the control module is also used to obtain the current drying time; determine whether the operating conditions of the drying equipment meet the preset conditions based on the current drying time, the first humidity, and the second humidity; if the determination result is negative, it is determined that there is a sensor fault, and the faulty module is determined based on the first humidity, the second humidity, the inlet temperature value, and the outlet temperature value.

[0067] Furthermore, the preset conditions include at least one of the following: the current drying time is less than the first preset time, and the effective humidity value is greater than the first preset humidity; the current drying time is less than the second preset time, and the effective humidity value is less than the first preset humidity but greater than the second preset humidity; the current drying time is less than the third preset time, and the effective humidity value is less than the second preset humidity but greater than the third preset humidity.

[0068] Specifically, the first preset time is less than the second preset time, and the second preset time is less than the third preset time.

[0069] Specifically, such as Figure 5 As shown, if the preset conditions are not met, a sensor malfunction is confirmed. The preset time can be set based on actual application data. As an example, suppose the first preset time is 1 minute and the first preset humidity is 50%. This means that the drying equipment only dries the load for 1 minute, and the probability that the humidity of the load will directly fall below 50% is very small. If this preset condition is met, the humidity sensor is more likely to malfunction. Correspondingly, as the current drying time increases, the effective humidity value should gradually decrease.

[0070] Specifically, in another embodiment, the above three preset conditions can also be set according to the effective humidity value.

[0071] Furthermore, the drying equipment also includes an alarm module and a storage module; the control module is also used to control the operation of the drying equipment based on historical drying data in the storage module if the temperature difference between the inlet temperature value and the outlet temperature value is detected to gradually increase with the drying time; and to control the alarm module to sound an alarm if the humidity difference between the first humidity and the second humidity is detected to be greater than a preset humidity difference and the duration is greater than a fourth preset time.

[0072] like Figure 5 As shown, with increasing drying time, the humidity level inside the drying drum decreases, and less water vapor is carried away by the airflow through the drying drum. The inlet and outlet temperatures should gradually converge. Therefore, when the temperature difference gradually increases with drying time, a fault in the temperature sensor module is detected. In this case, the drying process cannot be terminated based on the inlet and outlet temperatures; therefore, the shutdown time is controlled based on historical drying data.

[0073] Furthermore, historical drying data can include the initial weight of the load and the drying time. The initial weight of the load in the current operation is matched with the initial weight of the load in the historical drying data, and the drying process ends based on the drying time corresponding to the matching result. This avoids over-drying and uneven drying caused by sensor malfunctions.

[0074] Specifically, the preset humidity difference can be 5% greater than the calibration humidity difference, and the fourth preset time can be 5 minutes. When the humidity difference exceeds the calibration humidity difference, the system initiates an automatic calibration program. In this case, if the humidity difference between the first and second humidity levels exceeds the preset humidity difference, calibration fails, indicating a malfunction in the humidity acquisition module. If the humidity inside the drying drum cannot be obtained, overloading may occur, posing a safety hazard. The alarm module will sound an alarm to remind the user to shut down the drying equipment promptly.

[0075] This invention also provides a control method for a drying device, applied to the aforementioned drying device, comprising:

[0076] Based on the first humidity collected by the contact humidity acquisition module and the second humidity collected by the non-contact humidity acquisition module, a target drying program is determined, and the drying module is controlled to dry the load according to the target drying program.

[0077] In summary, the present invention provides a drying device and a control method for the drying device, which has the following advantages compared with the prior art:

[0078] By combining contact and non-contact humidity acquisition modules, the system simultaneously acquires humidity values ​​from both the load surface and the overall load, improving the accuracy of humidity detection. The control module determines the target drying program based on the first humidity value acquired by the contact module and the second humidity value acquired by the non-contact module. It then controls the drying module to dry the load according to this target program. The drying program can be adjusted based on humidity changes, allowing for different levels of drying and specifically improving the uniformity of drying during each stage, thus reducing issues such as incomplete drying, uneven drying, and over-drying. Furthermore, the system uses multiple dimensions, including humidity difference, temperature difference, and outlet air temperature, to determine whether the load is fully dried, making the timing of shutting off the drying module more precise and reducing uneven drying. Finally, a fault diagnosis component is incorporated into the overall drying process to promptly detect sensor malfunctions, improving safety.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drying device, characterized in that, It includes a contact humidity acquisition module, a non-contact humidity acquisition module, a control module, and a drying module; The contact humidity acquisition module is used to acquire the initial humidity inside the drying drum. The non-contact humidity acquisition module is used to acquire the second humidity inside the drying drum; The control module is used to determine a target drying program based on the first humidity and the second humidity, and to control the drying module to dry the load according to the target drying program.

2. The drying equipment according to claim 1, characterized in that, The control module is also used for, The effective humidity value inside the drying drum is determined based on the first humidity and the second humidity. The target drying program is determined based on the correspondence between the effective humidity value and the preset humidity.

3. The drying equipment according to claim 2, characterized in that, The target drying program includes a preset first drying program, a second drying program, and a third drying program. The control parameters are different in different target drying programs. The control parameters include air volume, temperature, and / or the working mode of the drying drum.

4. The drying equipment according to claim 3, characterized in that, The drying equipment also includes a temperature acquisition module for acquiring the inlet temperature and outlet temperature of the drying cylinder. The control module is also used to obtain the current drying time and the initial weight of the load when the target drying program is the second drying program. Based on the current drying time, the inlet temperature, and the outlet temperature, the dynamic air volume is determined, and the drying module is controlled to adjust the air volume to the dynamic air volume. The dynamic temperature is determined based on the initial weight of the load, and the drying module is controlled to adjust the temperature to the dynamic temperature.

5. The drying equipment according to claim 4, characterized in that, The control module is also used for, Based on the first humidity, the second humidity, the inlet temperature value, and the outlet temperature value, determine whether the operating conditions of the drying equipment meet the preset drying conditions; If the judgment result is yes, then the drying module will be shut down.

6. The drying equipment according to claim 5, characterized in that, The control module is also used for, The temperature difference is determined based on the inlet temperature value and the outlet temperature value; The temperature fluctuation at the air outlet is determined based on the aforementioned air outlet temperature value; Based on the effective humidity value, the temperature difference, and the temperature fluctuation at the air outlet, it is determined whether the operating conditions of the drying equipment meet the preset drying conditions.

7. The drying equipment according to claim 5 or 6, characterized in that, The control module is also used to obtain the current drying time; Based on the current drying time, the first humidity, and the second humidity, determine whether the operating conditions of the drying equipment meet the preset conditions; If the judgment result is negative, it is determined that there is a sensor malfunction, and the faulty module is identified based on the first humidity, the second humidity, the inlet temperature value, and the outlet temperature value.

8. The drying equipment according to claim 7, characterized in that, The preset conditions include at least one of the following: The current drying time is less than the first preset time, and the effective humidity value is greater than the first preset humidity. The current drying time is less than the second preset time, and the effective humidity value is less than the first preset humidity but greater than the second preset humidity. The current drying time is less than the third preset time, and the effective humidity value is less than the second preset humidity but greater than the third preset humidity.

9. The drying equipment according to any one of claims 6-8, characterized in that, The drying equipment also includes an alarm module and a storage module; The control module is also used to control the operation of the drying equipment based on the historical drying data in the storage module if it is detected that the temperature difference between the air inlet temperature and the air outlet temperature gradually increases with the increase of drying time. If the humidity difference between the first humidity and the second humidity is detected to be greater than the preset humidity difference, and the duration is greater than the fourth preset time, then the alarm module is controlled to sound an alarm.

10. A control method for a drying device, applied to the drying device according to claims 1-9, characterized in that, include: Based on the first humidity collected by the contact humidity acquisition module and the second humidity collected by the non-contact humidity acquisition module, a target drying program is determined, and the drying module is controlled to dry the load according to the target drying program.

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