Drying apparatus and control method

Abstract

A drying apparatus (10) and a control method. The drying apparatus (10) comprises: a wind power assembly (11), a heating assembly (12), an air pressure module (13) and a main control module (14); the wind power assembly (11) is used for generating an air flow; the heating assembly (12) is used for heating the air flow; the air pressure module (13) is used for acquiring the ambient air pressure; the main control module (14) is connected to the heating assembly (12) and the air pressure module (13), and the main control module (14) is configured to adjust the heating power of the heating assembly (12) according to the ambient air pressure.

Description

Drying device and control method Technical Field

[0001] The present application relates to the technical field of drying equipment, and in particular to a drying equipment and a control method. Background Art

[0002] Drying equipment can output heated airflow to accelerate the evaporation of moisture from the target object to achieve the purpose of drying. For example, after washing hair, people use a hair dryer to dry their hair with hot air.

[0003] In existing drying equipment, temperature control is generally performed through air temperature feedback. That is, a temperature sensor is installed near the air outlet to collect air temperature, and then the heating power is adjusted based on the collected air temperature. This temperature control method has at least the following disadvantages:

[0004] (1) Since the temperature control process requires collecting the temperature of the heated air flow as the basis for feedback adjustment, the temperature control has a lag. In particular, when the initial air temperature of the drying equipment is too high, even if the air temperature can be adjusted to a lower level later, the high-temperature air flow that has been output may still burn the user.

[0005] (2) Due to factors such as installation space and circuit design, the existing technology generally uses thermistors (NTCs) as components to detect wind temperature. The resistance of the thermistor changes nonlinearly with temperature, and the detection accuracy will drop significantly in the high temperature range (for example, above 100°C). The thermistor itself also has installation errors. These reasons together lead to the poor detection accuracy of the thermistor, and it can only provide an approximate wind temperature range. Therefore, the control of wind temperature in the existing technology is limited to setting a high temperature threshold to avoid excessive wind temperature, and cannot accurately control to achieve a specific wind temperature.

[0006] Summary of the Invention

[0007] The present application provides a drying device and a control method, which aim to solve the problem in the prior art that the drying device has low air temperature control accuracy and may have an initial air temperature that is too high.

[0008] The present application provides a drying device, including: a wind power component, a heating component, an air pressure module and a main control module, the wind power component is used to generate airflow, the heating component is used to heat the airflow, the air pressure module is used to obtain the ambient air pressure, the main control module is connected to the heating component and the air pressure module, and the main control module is configured to adjust the heating power of the heating component according to the ambient air pressure.

[0009] The present application also provides a control method for controlling the temperature of the airflow output by a drying device, comprising the following steps:

[0010] Obtain the ambient air pressure through the air pressure module;

[0011] The operation of the wind power component and / or the heating component is controlled according to the ambient air pressure. The heating component is used to heat the airflow, and the wind power component is used to generate the airflow.

[0012] The present application also provides a readable storage medium, which stores a program. When the program is executed by a processor, the steps of the aforementioned control method are implemented.

[0013] The drying equipment and control method in the present application change the heating power of the heating component by changing the ambient air pressure in the space where the drying equipment is used, so as to achieve precise control of the wind temperature.

[0014] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] FIG1 is a schematic diagram of the frame structure of a drying device in certain embodiments of the present application;

[0017] FIG2 is a schematic diagram of a heating component in certain embodiments of the present application;

[0018] FIG3 is a schematic diagram of the frame structure of a drying device in certain embodiments of the present application;

[0019] FIG4 is a schematic structural diagram of a drying device in certain embodiments of the present application;

[0020] FIG5 is a schematic structural diagram of a drying device in certain embodiments of the present application;

[0021] FIG6 is a schematic structural diagram of a drying device in certain embodiments of the present application;

[0022] FIG7 is a schematic diagram of the steps of the control method in certain embodiments of the present application;

[0023] FIG8 is a schematic diagram of detailed steps of a control method in certain embodiments of the present application;

[0024] FIG9 is a schematic diagram of another detailed step of the control method in certain embodiments of the present application;

[0025] FIG10 is a schematic diagram of another detailed step of the control method in certain embodiments of the present application;

[0026] FIG11 is a schematic diagram of another detailed step of the control method in certain embodiments of the present application;

[0027] FIG12 is a schematic diagram of another detailed step of the control method in certain embodiments of the present application;

[0028] FIG13 is a schematic diagram of another detailed step of the control method in certain embodiments of the present application. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0030] As shown in FIG. 1 and FIG. 4 , a drying device 10 is provided in an embodiment of the present application, including a wind power component 11 , a heating component 12 , an air pressure module 13 and a main control module 14 .

[0031] The wind power assembly 11 may include a motor and an impeller. When the wind power assembly 11 is in operation, the motor drives the impeller to rotate, and the rotating impeller performs work on the air to cause the air to flow and form an airflow (the direction of the airflow is shown by the arrow in FIG4 ).

[0032] The heating assembly 12 may include one or more heating wires, heating plates, or other structures. When current is supplied to the heating assembly 12, it dissipates heat into the surrounding air, heating it. The heating assembly 12 is at least partially positioned within the airflow generated by the wind assembly 11. The heat generated by the heating assembly 12 is applied to the air flowing through it, thereby enabling the drying apparatus 10 to output a hot airflow to dry the target object.

[0033] The gas pressure module 13 is a structure for obtaining gas pressure.

[0034] In some embodiments, the air pressure module 13 itself can directly detect and obtain the air pressure. For example, the air pressure module 13 is an air pressure sensor (also known as an altitude sensor, height sensor), a barometer, etc. When the air pressure module 13 is placed in a non-enclosed space, it can detect and obtain the ambient air pressure at the location through contact with the air.

[0035] In some embodiments, the air pressure module 13 may also be a GPS module, which can obtain the altitude of the location through GPS signals and convert it into the ambient air pressure based on the altitude of the poster. Alternatively, if the location is obtained through GPS signals, for example, the ambient air pressure in Beijing can be obtained by querying the preset map data.

[0036] In some embodiments, the air pressure module 13 can also communicate with other structures to obtain the ambient air pressure. For example, the drying device 10 can establish communication with a smart terminal such as a mobile phone or tablet computer via Bluetooth, Wi-Fi, or other means, and the air pressure module 13 can directly obtain the ambient air pressure at the location from the smart terminal. Alternatively, the air pressure module 13 obtains the location from the smart terminal and obtains the ambient air pressure at the location based on preset map data. Alternatively, the air pressure module 13 can directly communicate with a relevant barometer to obtain the ambient air pressure.

[0037] In some embodiments, the air pressure module 13 can also obtain ambient air pressure by connecting to a network. For example, the drying device 10 itself can be connected to the internet via Wi-Fi or a mobile network. After locating its location via the network, the ambient air pressure at that location can be obtained by querying preset map data. Alternatively, after the drying device 10 is connected to the internet, the air pressure module 13 can receive ambient air pressure information sent from a server.

[0038] In some embodiments, the air pressure module 13 may also be an input module such as a keypad or a touch screen, and the user may query the ambient air pressure and then input the ambient air pressure value through the input module.

[0039] In some embodiments, the air pressure module 13 of the drying device 12 can be pre-calibrated to the ambient pressure on a batch-by-batch basis. The air pressure module 13 serves only as a storage device for the pre-calibrated ambient pressure. When the drying device 12 is sold through a sales network, the pre-calibrated ambient pressure is delivered to the corresponding region for sale. The drying device 12 purchased by the user in the local area is already calibrated to the corresponding local ambient pressure.

[0040] Various embodiments of the air pressure module 13 are listed above. Unless otherwise specified below, the air pressure module 13 refers to an air pressure sensor (or altitude sensor, height sensor), which is in direct contact with the air and detects the ambient air pressure.

[0041] The main control module 14 is an electrical structure capable of performing data calculations, such as an MCU (single-chip microcomputer) or a CPU (central processing unit). During operation of the drying apparatus 10, the main control module 14 obtains ambient air pressure from the air pressure module 13 and controls the control parameters of the drying apparatus 10. These control parameters specifically include the speed of the motor in the wind assembly 11 and / or the power of the heating assembly 12. By changing these control parameters, the wind speed of the wind assembly 11 and / or the heating output of the heating assembly 12 can be altered, thereby changing the air temperature and wind speed of the drying apparatus 10.

[0042] Accordingly, as shown in FIG1 and FIG7 , certain embodiments of the present application provide a control method for controlling the drying device 10, comprising the following steps:

[0043] S10 obtains the ambient air pressure through the air pressure module 13;

[0044] The ambient air pressure is obtained by the air pressure module 13 and refers to the air pressure value of the open environment in which the drying device 10 is currently located, that is, the air pressure value of the area where the user is using the drying device 10. The method for obtaining the ambient air pressure by the air pressure module 13 can refer to the various embodiments listed above and will not be repeated here.

[0045] S20 controls the operation of the wind power component 11 and / or the heating component 12 according to the ambient air pressure.

[0046] The main control module 14 uses the ambient air pressure as one of the bases for changing the control parameters, and changes the control parameters accordingly according to different ambient air pressures, such as increasing or decreasing the power value of the heating component 12, increasing or decreasing the speed of the wind component 11, so that the operation of the drying equipment 10 can be adjusted according to the changes in the ambient air pressure.

[0047] In the drying device 10 and control method described above, the main control module 14 detects changes in ambient air pressure and adjusts the control parameters of the drying device 10 accordingly, thereby ensuring that users at different altitudes can experience a similar, designed-for user experience. In particular, this method can avoid problems such as excessive air temperature and slow drying speeds caused by air pressure fluctuations. The specific control process will be described in detail below.

[0048] In certain embodiments, as shown in FIG7 and FIG8 , in step S20 , controlling the operation of the heating component 12 and / or the wind component 11 according to the ambient air pressure specifically includes:

[0049] S21 determines the working mode.

[0050] The drying device 10 is generally preset with one or more working modes, each of which has a different design purpose and corresponds to different control parameters.

[0051] For example, the drying device 10 is a hair dryer, and three working modes can be preset according to the blowing speed: cold air gear, medium heat gear, and high heat gear; or three working modes can be preset according to the drying time: low speed gear, medium speed gear, and high speed gear. When the user turns on and uses the drying device 10, the drying device 10 must be in a certain working mode. During the design process of the drying device 10, the required wind speed and wind temperature are determined according to the design purpose of the working mode, and the heating component 12 and / or the wind component 11 are calibrated to determine the control parameters of the working mode. Specifically, the control parameters include the rotation speed of the wind component 11 and / or the power value of the heating component 12. When the drying device 10 is in different working modes, the main control module 14 controls the operation of the wind component 11 and / or the heating component 12 according to the corresponding control parameters.

[0052] It is readily understood that in some embodiments, the drying device 10 may not have multiple operating modes. For example, if the drying device 10 is a hand dryer, it may have only two states: on and off. The wind speed and temperature of the hand dryer when it is on are also determined during the early design process, and the corresponding control parameters are calibrated. Therefore, the operating mode can be understood as referring to the state of the hand dryer when it is on.

[0053] S22 obtains the preset power, which is the power value of the heating component 12 when the drying device 10 operates in the working mode at the preset air pressure.

[0054] During the design process of the drying device 10 , the operating parameters in each working mode are calibrated based on the preset air pressure, which at least includes the power value of the heating component 12 , ie, the preset power corresponding to the preset air pressure.

[0055] For example, the drying device 10 is designed to output an airflow at a temperature of 60°C in one operating mode. The preset power of the heating assembly 12 in this operating mode is determined to be W1 through simulations, experimental testing, and other methods at a preset air pressure. This means that, under the preset air pressure, when the airflow temperature output by the drying device 10 in this operating mode is 60°C, the power of the heating assembly 12 is the preset power W1.

[0056] S23 obtains the control power based on the preset power according to the relationship between the ambient air pressure and the preset air pressure.

[0057] When users use drying device 10 in different regions, the ambient air pressure and the preset air pressure may differ. For example, the ambient air pressure may be greater than the preset air pressure, or less than the preset air pressure. In these situations, if main control module 14 still uses the preset power to control heating assembly 12, the actual wind temperature will change due to the pressure change, thus failing to achieve the design purpose of the operating mode. Therefore, main control module 14 needs to adjust the preset power according to the relationship between the ambient air pressure and the preset air pressure to obtain the controlled power. This ensures that when drying device 10 operates in the same operating mode at different ambient air pressures, it can achieve the same design purpose as when it was in the preset air pressure mode.

[0058] It is easy to understand that if the ambient pressure is the same as the preset pressure (the absolute value of the difference between the two is less than the threshold, which means they are considered to be the same), the main control module 14 can directly use the preset power as the control power.

[0059] S24 controls the operation of the heating component 12 according to the controlled power.

[0060] The main control module 14 controls the operation of the heating component 12 with a control power adapted to the current ambient air pressure. When the drying device 10 operates in the corresponding working mode, it can achieve the same design purpose as that in the preset air pressure.

[0061] In the control method of the above embodiment, the control parameters for each operating mode were calibrated at a preset air pressure during the design process of the drying device 10. Alternatively, it can be understood that the relevant data pre-stored in the drying device 10 includes the control parameters and the preset air pressure corresponding to the control parameters. During operation of the drying device 10, the main control module 14 determines the control power adapted to the ambient air pressure based on the preset power according to the relationship between the actual detected ambient air pressure and the preset air pressure.

[0062] In other words, the ambient air pressure is introduced as one of the control bases in the control process of the drying equipment 10, so that the drying equipment 10 can adaptively adjust the operating parameters in various ambient air pressures, so that when the user uses the same working mode of the drying equipment 10 in any region, the drying equipment 10 can achieve the design purpose of the working mode, and the user's usage experience is also roughly the same.

[0063] As shown in FIG. 9 , in a control method in certain embodiments, different working modes have different wind temperatures, and the wind temperature is used to represent the temperature of the airflow output by the drying device 10 .

[0064] The purpose of designing more than 10 working modes of the drying equipment is to output airflow with different wind temperatures. In a specific embodiment, three working modes are preset according to different wind temperatures: cold air gear (wind temperature is the ambient temperature), medium heat gear (wind temperature 60°C), and high heat gear (wind temperature 80°C). The wind temperatures of these three working modes are informed to the user in the instruction manual, packaging box, display screen, etc., and the user selects the working mode according to his or her own needs. During the design process of the drying equipment 10, the power values ​​of the heating component 12 in the above three working modes are calibrated in the preset air pressure, wherein the preset power corresponding to the cold air gear is 0, the preset power corresponding to the medium heat gear is W1, and the preset power corresponding to the high heat gear is W2. It can be understood that, in the preset air pressure, when the main control module 14 controls the operation of the heating component 12 with the preset power W1, the wind temperature of the output airflow of the drying equipment 10 is 60°C, and when the main control module 14 controls the operation of the heating component 12 with the preset power W2, the wind temperature of the output airflow of the drying equipment 10 is 80°C. When using the drying device 10, the closer the actual air temperature in each operating mode is to the above values, the better the user experience. Conversely, if the air temperature in each operating mode deviates from the above values ​​when used by users in different regions, the user will experience a significant difference between the actual air temperature of the drying device 10 and the declared air temperature, resulting in a poor user experience.

[0065] To this end, in step S23, the control power is obtained based on the preset power, specifically including:

[0066] S231 If the ambient pressure is greater than the preset pressure, increase the power based on the preset power to obtain the control power;

[0067] If the ambient air pressure is less than the preset air pressure, reduce based on the preset power to obtain the control power.

[0068] According to the relevant gas equation, the change in ambient air pressure will affect the air temperature of the output air flow of the drying device 10. The specific principle is as follows: at different ambient air pressures, the total mass of gaseous substances contained in the same volume of gas is different. When the same total heat is input into the same volume of gas, if the gas contains a larger mass of gaseous substances, the temperature rise of the gas after heating is smaller; if the gas contains a smaller mass of gaseous substances, the temperature rise of the gas after heating is larger.

[0069] For example, when using the drying device 10 in area A where the ambient air pressure is P1, within a unit time, the total volume of the output air flow of the drying device 10 is S, and the power value of the heating component 12 is W a , and the air temperature of the output air flow of the drying device 10 is T1. When using the drying device 10 in area B where the ambient air pressure is P2 (P2 < P1), keeping the same control parameters, and also outputting an air flow with a total volume of S within a unit time, the heating power of the heating component 12 is also W a , and the air temperature of the output air flow of the drying device 10 is T2.

[0070] Due to the different ambient air pressures in the two areas, in area A, the mass of gaseous substances contained in the gas with a volume of S is larger; in area B, the mass of gaseous substances contained in the gas with a volume of S is smaller. Therefore, when the user uses the drying device 10 in these two areas, with the power value W of the heating component 12 a remaining unchanged, the total heat input by the heating component 12 to the gas with a volume of S within a unit time is the same, but due to the different masses of gaseous substances contained, it will cause the air temperature T1 < the air temperature T2.

[0071] That is, when the user uses the drying device 10 in different areas, even if the operating parameters of the drying device 10 are exactly the same, different air temperatures may be felt. Specifically, the lower the ambient air pressure, the higher the air temperature, and the higher the ambient air pressure, the lower the air temperature.

[0072] The air temperature not only affects the user's perception during use, but too high air temperature may also scald the skin or ignite flammable substances. If the design and production of the drying device 10 are completed in area A, in the working mode with the highest air temperature, the air temperature is slightly lower than the temperature that may scald the skin or ignite flammable substances. If the influence of ambient air pressure on the air temperature is not considered, when the user uses the drying device 10 in area B in this working mode, the actual air temperature of the output air flow will exceed the above temperature, thus causing a high-temperature hazard.

[0073] Based on the above principle, it can be known that, under the premise that the control parameters remain unchanged, the wind temperature output by the drying device 10 in an environment with a higher air pressure will decrease, and the wind temperature output in an environment with a lower air pressure will increase. In order to ensure that the airflow output by the drying device 10 at any ambient air pressure state has the same air temperature in the same working mode, in the above embodiment of the present application, when the ambient air pressure is greater than the preset air pressure, the control power is increased based on the preset power, thereby increasing the input heat of the heating component 12 to the airflow, thereby increasing the actual air temperature. Similarly, if the ambient air pressure is less than the preset air pressure, the control power is reduced based on the preset power, thereby reducing the input heat of the heating component 12 to the airflow, thereby reducing the actual air temperature. In this way, precise control of the air temperature can be achieved. When users in any region use the same working mode of the drying device 10, the airflow they feel has the same air temperature, and the air temperature is consistent with the nominal air temperature of the working mode of the drying device 10, thereby providing users with a better user experience.

[0074] In particular, when used in areas with relatively low ambient pressure, if the user selects the highest wind temperature working mode of the drying device 10, if the influence of air pressure on wind temperature is not taken into account, there may be a risk that the wind temperature of the drying device 10 is too high. Although the prior art can adjust the heating power of the airflow by detecting the wind temperature, this adjustment method has a lag in adjusting the wind temperature and cannot avoid the danger caused by the initial wind temperature being too high. The control method in the above-mentioned embodiment of the present application directly reduces the power value of the heating component 12 when it detects that the ambient pressure is relatively low, thereby completely avoiding the danger of the initial wind temperature being too high. Similarly, when used in areas with relatively high ambient pressure, the control method in the above-mentioned embodiment of the present application can also increase the power value of the heating component 12 according to the ambient pressure, so that the wind temperature of its output airflow will not be too low. Under the same circumstances, the wind temperature of the output airflow of the drying device 10 of the prior art is relatively low, which may make the user feel cold.

[0075] As shown in FIG10 , in certain embodiments of the control method, different working modes have different drying times, and the drying time is used to represent the time taken by the drying device 10 to dry the target object from a first moisture content to a second moisture content.

[0076] For example, the drying device 10 is a hair dryer, and the target object is medium-length hair (approximately 30 cm in length). Generally speaking, when the hair is completely wet and the surface water droplets are wiped off, the water weight percentage of the total hair weight is approximately 30%, and when the hair is approximately dry, the water weight percentage of the total hair weight is approximately 15%. Assuming the first water content of the target object (hair) is 30% and the second water content is 15%, the drying time is the time it takes the drying device 10 to dry the hair from a water content of 30% to a water content of 15%.

[0077] The purpose of designing multiple working modes is to correspond to different drying times. For example, three working modes are preset: slow speed (drying time of 15 minutes), medium speed (drying time of 10 minutes), and high speed (drying time of 7 minutes). The drying time of these three working modes is informed to the user in the manual, packaging box, display screen, etc. The user selects the working mode to dry the hair according to their needs, and when using it, the user expects to complete the drying process in the corresponding drying time. The closer the actual drying time is to the drying time corresponding to the working mode, the better the user experience. Conversely, if users in different regions use the drying device 10, the time it takes for the drying device 10 to complete the drying process in each working mode is significantly different from the declared drying time, which will result in a poor user experience.

[0078] It should be noted that a shorter drying time during the blow-drying process indicates faster hair dehydration, making it more susceptible to excessive dehydration and high-temperature damage. Based on different hair qualities and usage habits, different users tend to choose different drying times when using the drying device 10 to dry their hair. For example, those with short hair or those with less sensitive hair texture tend to dry quickly to save time and choose the operating mode with the shortest drying time. On the other hand, those with medium-to-long hair or those with more sensitive hair texture tend to dry slowly and choose the operating mode with a longer drying time. Multiple operating modes are designed to meet the needs of these different users.

[0079] In step S23, the control power is obtained based on the preset power, including:

[0080] S233: If the ambient pressure is greater than the preset pressure, the power is reduced based on the preset power to obtain the control power;

[0081] If the ambient pressure is lower than the preset pressure, the control power is increased based on the preset power in step S234.

[0082] According to the relevant gas equation, the total mass of gaseous substances contained in the same volume of gas varies at different ambient pressures, and the total mass of gaseous substances in the gas is directly proportional to its water absorption capacity. In other words, for the same volume of gas, its water absorption capacity is stronger when the ambient pressure is higher, resulting in higher drying efficiency for the target object; while its water absorption capacity is weaker when the ambient pressure is lower, resulting in lower drying efficiency for the target object.

[0083] For example, when the drying device 10 is used in area A where the ambient pressure is P1, the total volume of the airflow output by the drying device 10 per unit time is S, and the power value of the heating component 12 is W. b, the time consumed for medium-length wet hair to dry from a water content of 30% to a water content of 15% is the drying time t1. When using the drying device 10 in region B where the ambient air pressure is P2 (P2 < P1), the total volume of the air flow output by the drying device 10 per unit time is S, and the heating power of the heating component 12 is also W b , the time consumed for medium-length wet hair to dry from a water content of 30% to a water content of 15% is the drying time t2.

[0084] Due to the different ambient air pressures in the two regions, in region A, the mass of gaseous substances contained in the gas with a volume of S is larger, and the water absorption capacity is stronger; in region B, the mass of gaseous substances contained in the gas with a volume of S is smaller, and the water absorption capacity is weak. Therefore, when users use the drying device 10 in these two regions, with the power value W of the heating component 12 b remaining unchanged, due to the difference in water absorption capacity caused by the different masses of gaseous substances, the drying time t1 > the drying time t2 will occur.

[0085] That is, when users use the drying device 10 in different regions, even if the control parameters of the drying device 10 are exactly the same, they may experience different drying times. Specifically, the lower the ambient air pressure, the longer the drying time, and the higher the ambient air pressure, the shorter the drying time.

[0086] Based on the above principle, it can be known that on the premise that the control parameters remain unchanged, the drying time of the drying device 10 will decrease in an environment with a larger air pressure and increase in an environment with a smaller air pressure. In order to make the drying device 10 have the same drying time in any ambient air pressure state in the same working mode, in the above implementation manner of the present application, when the ambient air pressure is greater than the preset air pressure, the control power is obtained by reducing the preset power, so as to achieve the purpose of increasing the drying time. Similarly, if the ambient air pressure is less than the preset air pressure, the control power is obtained by increasing the preset power, so as to achieve the purpose of reducing the drying time. In this way, precise control of the drying time can be achieved. Users in any region using the same working mode of the drying device 10 will spend approximately the same drying time to complete the hair drying process, and the drying time conforms to the nominal drying time of the drying device 10 in this working mode, thus bringing a better user experience to the users.

[0087] It should be pointed out that in the above-mentioned multiple embodiments, the various working modes are not mutually exclusive. For example, in some embodiments, the drying device 10 has three working modes: cold air gear (outputting airflow at room temperature), high speed gear (drying time 7 minutes), and high temperature gear (air temperature 80°C). After the user selects different working modes, the corresponding control power is obtained according to the corresponding steps in the above-mentioned control method. In other embodiments, the design purpose of the working mode can also be combined with the above-mentioned two methods. For example, the working mode is: hair care gear. The design purpose of this gear is to take into account both fast drying and reducing damage to the hair. Its control logic is that the first stage is to continuously output airflow with an air temperature of 80°C for time t1, and the second stage completes the drying process with time t2. In the above two stages, different control logics can also be used according to the above-mentioned embodiments to obtain corresponding control powers.

[0088] As shown in FIG11 , in certain embodiments of the control method, in step S20 , that is, controlling the operation of the wind power component 11 and / or the heating component 12 according to the ambient air pressure, further includes:

[0089] S235 If the control power is greater than the upper power limit of the heating component 12;

[0090] In some of the aforementioned embodiments, the control power is obtained after the preset power is increased. If the preset power itself is already a power value close to the upper limit of the power of the heating component 12 (for example, in the working mode with the highest wind temperature), the control power obtained after further increase may exceed the power upper limit of the heating component 12. The heating component 12 cannot operate at the control power, thereby causing the drying equipment 10 to fail to achieve the design purpose of the working mode, for example, the corresponding wind temperature or drying time cannot be achieved in areas with higher air pressure.

[0091] S236 obtains the preset rotation speed in the working mode, where the preset rotation speed is the rotation speed of the wind component 11 when the drying device 10 operates in the working mode at a preset air pressure.

[0092] During the design process of the drying apparatus 10, the control parameters for each operating mode were calibrated to include a preset power and a preset wind speed at a preset pressure. That is, at the preset pressure, the main control module 14 controls the operation of the heating component according to the preset power and the operation of the wind component 11 according to the preset speed, thereby achieving the design purpose of the corresponding operating mode.

[0093] S237 reduces the speed based on the preset speed to obtain the controlled speed.

[0094] According to the relevant gas equation, under the premise of constant pressure, the wind temperature is also related to the gas volume. For example, the power value of the heating component 12 is W c The volume of gas generated by the wind power component 11 per unit time is S1, and the corresponding wind temperature is Tc1 If the power value of the heating component 12 is kept at W c The speed of the wind power assembly 11 is reduced to form a gas volume S2 per unit time, and the corresponding wind temperature is T c2 Since the gas volume S2 is less than the gas volume S1, the wind temperature T c2 >T c1 In other words, the temperature control of the airflow output by the drying device 10 can be achieved by changing the power value of the heating component 12 or by changing the rotation speed of the wind component 11 .

[0095] Based on the above principle, when the control power exceeds the power upper limit of the heating component 12 (for example, in step S234 and step S231), the preset speed is reduced to obtain the controlled speed, and the main control module 14 controls the operation of the wind power component 11 at the controlled speed to reduce the volume of gas forming the airflow per unit time.

[0096] S238 controls the operation of the heating component 12 by controlling the power upper limit, and controls the operation of the wind power component 11 by controlling the rotation speed.

[0097] The main control module 14 controls the operation of the wind component 11 by controlling the speed, and controls the operation of the heating component 12 by controlling the power upper limit, so that the drying equipment 10 reduces the total volume of the output airflow in this working mode, increases the wind temperature to a certain extent, and indirectly achieves the theoretical wind temperature or drying time corresponding to the control power.

[0098] In certain embodiments of the control method, only a preset air pressure and a corresponding set of control parameters may be set. After obtaining the ambient air pressure, the corresponding control power and / or control speed are calculated using a preset function based on the difference between the ambient air pressure and the preset air pressure.

[0099] In some embodiments, as shown in FIG12 , the control method includes multiple preset air pressures, each with a corresponding preset power. For example, the various operating modes of the drying apparatus 10 can be calibrated at different preset air pressures in a laboratory where the air pressure can be varied. Alternatively, the control parameters for each operating mode of the drying apparatus 10 can be calibrated at multiple preset air pressures through software simulation, calibration in multiple laboratories at different altitudes, or other methods.

[0100] Accordingly, in step S22, obtaining the preset power includes:

[0101] S221 calculates the absolute value of the difference between the ambient air pressure and each preset air pressure.

[0102] S222 selects the preset air pressure with the smallest absolute value and uses the corresponding preset power as the control power.

[0103] In the above-described embodiment, multiple preset air pressures were set during the design of the drying device 10 to cover the atmospheric pressure range commonly encountered by humans. Control parameters for each operating mode of the drying device 10 were calibrated at these preset pressures. When a user switches the drying device 10 to a specific operating mode, the main control module 14 calculates the absolute value of the interpolated values ​​from the detected ambient air pressure and selects and uses the preset power at the closest preset pressure as the control power, thereby adapting the drying device 10 to the actual ambient air pressure.

[0104] In the above embodiment, the greater the number of preset air pressures, the more accurate the control of the drying device 10 is in theory, but this also brings problems such as a large amount of data and a large amount of preliminary work.

[0105] In some other implementations as shown in FIG. 13 , there are multiple preset air pressures in the control method, and each preset air pressure has a corresponding preset power.

[0106] In step S22, the preset power is obtained, including:

[0107] S223 obtains a fitting function according to a plurality of preset air pressures and corresponding preset powers;

[0108] Fitting involves connecting a series of points on a plane with a smooth curve. This curve can also be represented by a function, known as a fitting function. Fitting functions are a data processing method that creates a mathematical model using limited, pre-defined data. Common fitting methods include least squares curve fitting.

[0109] For example, in the design process of the drying equipment 10, after obtaining the corresponding preset power among multiple preset air pressures, multiple points are drawn in the plane coordinate system with the air pressure value as the horizontal coordinate and the power value as the vertical coordinate. The coordinates of each point are (preset air pressure, preset power), and then the points are connected with a smooth curve to obtain the fitting function f(p)=w, where the independent variable p is the air pressure value and w is the corresponding power value.

[0110] S224 obtains the control power corresponding to the ambient air pressure according to the fitting function.

[0111] After obtaining the fitting function, the ambient air pressure measured by the air pressure module 13 is brought into the fitting function to calculate the corresponding control power. For example, when the user uses the drying device 10, the ambient air pressure detected by the air pressure module 13 is p x , substitute the above fitting function f(p x ) calculated and the ambient pressure p x The corresponding control power w x .

[0112] In other implementations, interpolation calculation or other methods may be used to obtain a corresponding function, and the corresponding control power may be obtained according to the ambient pressure.

[0113] In the above embodiment, the number of preset air pressures can be reduced, and the control power can be obtained by real-time calculation through a function, with a small amount of data and less preliminary work.

[0114] In other embodiments, the control method can also be combined with the above two methods. For example, in the design process of the drying equipment 10, at multiple preset air pressures P x1、 P x2、 P x3 ...the corresponding preset power W x1、 W x2、 W x3 ..., the drying device 10 detects the ambient pressure P when it is running x Then, the absolute value of the difference is used to calculate the closest preset pressure P xn And the corresponding preset power W xn , according to the ambient air pressure P x With the preset air pressure P xn The difference between the reference preset power W xn Perform correction calculation, for example, according to the preset function f(P x -P xn ) calculates the correction value, and adjusts the reference preset power W according to the correction value xn After correction, the control power W is obtained x In this way, the advantages and disadvantages of the two aforementioned methods can be combined to reduce the amount of data and the workload of the initial design.

[0115] As shown in Figures 1 and 2, in some embodiments of the drying device 10, the heating component 12 includes multiple groups of heating structures 121. The heating structures 121 can be structures such as heating wires of preset lengths or heating plates of preset areas. The multiple groups of heating structures 121 have the same or different rated powers. The multiple groups of heating structures 121 can be combined in series or in parallel, or each can be independent. The main control module 14 can control the heating component 12 in either of the following two ways:

[0116] (1) The main control module 14 controls the opening and closing of any heating structure 121. For example, the heating component 12 includes four groups of identical heating structures 121. When the main control module 14 closes one group of heating structures 121 and opens the remaining three groups of heating structures 121, the heating component 12 operates at 75% of the maximum power. Alternatively, the heating component 12 includes one group of heating structures with a rated power of W. a The heating structure 121 and 1 group rated power is 2W a The heating structure 121; the main control module 14 turns off a group of rated power Wa The heating structure 121, open another group of rated power of 2W a The heating structure 121 and the heating component 12 operate at 67% of the maximum power.

[0117] (2) The main control module 14 controls the power value of any heating structure 121. For example, if the heating component 12 includes two identical heating structures 121, when the main control module 14 controls the power value of one heating structure 121 to 50% of its maximum power and the power value of the other heating structure 121 to 100% of its maximum power, the heating component 12 operates at 75% of its maximum power.

[0118] The main control module 14 can also combine the above two methods to control the heating assembly 12. For example, if the heating assembly 12 includes two identical sets of heating structures 121, the main control module 14 can also control the heating assembly 12 by turning off one set of heating structures 121 and providing 50% of the maximum power to the other set of heating structures 121. In this case, the heating assembly 12 operates at 25% of the maximum power.

[0119] In certain embodiments, as shown in Figures 1 and 4, the drying apparatus 10 further includes a housing 16, within which is disposed an airflow passage 164. The wind assembly 11 is configured to generate airflow within the airflow passage 164. The airflow passage 164 is a space enclosed by sidewalls and defines the cross-sectional area of ​​the airflow formed within the drying apparatus 10. Accordingly, the impeller diameter in the wind assembly 11 is slightly smaller than the cross-sectional area of ​​the airflow to ensure sufficient work is performed on the air within the airflow passage 164. Combining the impeller speed of the wind assembly 11 and the cross-sectional area of ​​the airflow, the volume of airflow passing through the drying apparatus 10 per unit time can be calculated.

[0120] The air pressure module 13 needs to be exposed to the outside air to detect the ambient air pressure. If the air pressure module 13 is directly placed on the outer surface of the housing 16, although this requirement of exposure to the outside air can be met, it will damage the appearance consistency of the drying device 10. In addition, the exposed air pressure module 13 is susceptible to damage. Therefore, in some embodiments, the air pressure module 13 is placed in the air flow channel 164 so that it can contact the air flow in the air flow channel 164 to detect the ambient air pressure. Moreover, the air pressure module 13 is hidden inside the housing 16, which does not affect the appearance consistency of the drying device 10 and is not easily damaged.

[0121] In some embodiments, the ultra-high-speed motor used in the wind assembly 11 generates a high-speed airflow within the airflow channel 164 during operation. When the high-speed airflow passes through the air pressure module 13, it affects the ambient air pressure measured by the air pressure module 13, causing it to deviate from the actual ambient air pressure. To this end, in some embodiments, the control method, before step S10, i.e., before obtaining the ambient air pressure through the air pressure module 13, further includes:

[0122] When the wind power assembly 11 is not running or the running time is less than a preset value, the ambient air pressure is obtained through the air pressure module 13 .

[0123] In some embodiments, when the wind power assembly 11 is not in operation, there is no high-speed airflow in the airflow channel 164 , and the air pressure module 13 can accurately detect and obtain the ambient air pressure.

[0124] In some embodiments, a shorter delay time, such as 0.1 second, 0.3 second, 0.5 second, 0.8 second, 1 second, 1.5 seconds, 2 seconds, or 3 seconds, can be set after the drying device 10 is started. After the delay time, the wind assembly 11 begins to operate, thereby delaying the time it takes for the drying device 10 to start producing air. During this delay time, no airflow is generated in the airflow channel 164, and the air pressure module 13 can still accurately detect the ambient air pressure.

[0125] In some embodiments, the detection time of the air pressure module 13 is set to a relatively short preset time after the drying device 10 is started. For example, the preset time is set to 0.1 seconds, 0.3 seconds, 0.5 seconds, 0.8 seconds, 1 second, 1.5 seconds, 2 seconds, 3 seconds, etc. after the drying device 10 is started. During this preset time, the high-speed airflow generated by the wind power assembly 11 has not yet reached its maximum wind speed, and its impact on the ambient air pressure is relatively small. Therefore, when the air pressure module 13 detects the ambient air pressure within this preset time period, it can avoid being affected by the high-speed airflow, thereby measuring a more accurate ambient air pressure.

[0126] As shown in Figures 1, 2 and 4, in some embodiments, the heating component 12 includes a first component 124 and a second component 123, and along the direction of the airflow (the direction of the arrow in Figure 4), the first component 124 is located upstream of the wind component 11, and the second component 123 is located downstream of the wind component 11. The first component 124 can be composed of one or more of the aforementioned heating structures 121 connected in series and / or in parallel, and the second component 123 can also be composed of one or more of the aforementioned heating structures 121 connected in series and / or in parallel. The structure and heating power of the first component 124 and the second component 123 can be the same or different. The main difference between the two is the position relative to the wind component 11 in the airflow. It is easy to understand that the control of the heating component 12 by the main control module 14 can also include controlling the opening and closing or input power of each of the first component 124 and the second component 123. When the first component 124 and the second component 123 work simultaneously, it is equivalent to heating the air at two positions in the airflow, thereby giving the heating component 12 a larger heat exchange area and higher heating efficiency.

[0127] However, when the first component 124 is working, the airflow heated by it will pass through the wind component 11, causing the wind component 11 to operate in the heated airflow, which may affect the performance and service life of the wind component 11. Therefore, when the main control module 14 controls the heating component 12 according to the control power, if the control power is lower than the first threshold (the first threshold is roughly equivalent to the maximum power of the second component 123), the control power can be completely achieved by the second component 123. At this time, the control strategy of the main control module 14 is to turn off the first component 124, only turn on the second component 123 and control its operation to reach the control power. In this way, the main control module 14 can give priority to turning off the first component 124 under certain working conditions, so that the wind component 11 will not operate in the heated airflow under these working conditions, thereby extending the service life of the wind component 11.

[0128] In a more specific embodiment, as shown in Figures 5 or 6 , the housing 16 of the drying apparatus 10 has a first air inlet 161, a second air inlet 162, and an air outlet 163. The airflow channel 164 includes a first air duct 164a and a second air duct 164b, with the first air duct 164a connecting the first air inlet 161 and the air outlet 163. The wind assembly 11 is disposed within the first air duct 164a and, during operation, generates airflow directly within the first air duct 164a. The airflow enters the housing 16 from the first air inlet 161, flows along the first air duct 164a, and exits the housing 16 from the air outlet 163.

[0129] In the embodiment shown in Figure 5, the upstream of the second air duct 164b is connected to the second air inlet 162, and the downstream is connected to the first air duct 164a. After the wind assembly 11 generates airflow in the first air duct 164a, it creates a negative pressure downstream of the second air duct 164b, thereby sucking air outside the housing 16 through the second air inlet 162 and flowing along the second air duct 164b, ultimately merging into the first air duct 164a.

[0130] In the embodiment shown in Figure 6, the upstream of the second air duct 164b is connected to the second air inlet 162, and the downstream is connected to the air outlet 163. After the wind power component 11 generates airflow in the first air duct 164a, it will also form a negative pressure at the air outlet 163, thereby sucking the gas outside the shell 16 from the second air inlet 162 and flowing along the second air duct 164b, and finally flowing out from the air outlet 163.

[0131] In the embodiment shown in Figures 5 and 6, since the wind power component 11 is arranged in the first air duct 164a, the air in the second air duct 164b is indirectly affected by the wind power component 11 to form an airflow, so the airflow velocity of the second air duct 164b is less than the airflow velocity of the first air duct 164a.

[0132] As shown in Figures 1, 5, and 6, in some embodiments of the drying device 10, the air pressure module 13 is disposed in the second air duct 164b. Since the airflow in the second air duct 164b has a lower flow rate, the impact on the ambient air pressure is also smaller, thereby enabling the air pressure module 13 to more accurately detect the ambient air pressure. In some embodiments, the air pressure module 13 may also be disposed in the first air duct 164a. Since the airflow in the first air duct 164a has a higher flow rate, in order to reduce the impact of the flow rate on the detected ambient air pressure, reference may be made to the control method described above, that is, when the wind power component 11 is not operating or has been operating for less than a preset time, the ambient air pressure is obtained through the air pressure module 13.

[0133] It is readily understood that in certain embodiments, the airflow in the second air duct 164b may also affect the air pressure, thereby causing errors in the ambient air pressure detected by the air pressure module 13. Similarly, a similar approach as described above can be employed, such as testing when the wind power assembly 11 is not operating or has been operating for less than a preset time, to avoid the impact of high-speed airflow on the detection accuracy of the air pressure module 13.

[0134] As shown in Figures 1, 5 and 6, in a more specific embodiment, the drying device 10 also includes a control circuit 15 arranged in the second air duct 164b. The air pressure module 13 and the main control module 14 are both arranged on the control circuit 15, and the control circuit 15 is electrically connected to the wind power component 11 and the heating component 12. The control circuit 15 constitutes the main circuit structure inside the drying device 10. When the drying device 10 is running, the air flow in the second air duct 164b flows through the entire control circuit 15. In addition to enabling the air pressure module 13 to detect the ambient air pressure more accurately, the air flow can also heat the control circuit 15 and prevent the control circuit 15 from overheating. Since the air flow velocity in the second air duct 164b is lower than that in the first air duct 164a, the control circuit 15 arranged in the second air duct 164b will not generate obvious wind noise.

[0135] As shown in FIG3 , in some embodiments, drying apparatus 10 further includes a radiation assembly 17 capable of emitting infrared radiation. Radiation assembly 17 is connected to main control module 14, and main control module 14 is configured to adjust the operating power of radiation assembly 17 according to the ambient air pressure. When current is input to radiation assembly 17, it generates infrared radiation within a predetermined wavelength band, which directly acts on the target object to dry it.

[0136] Accordingly, in certain embodiments of the present application, the control method further includes the following steps:

[0137] Determine if the ambient air pressure is below a threshold.

[0138] Because the radiation component 17 itself will also generate heat during operation. According to the aforementioned influence of ambient air pressure on wind temperature, it can be seen that in an environment with low ambient air pressure, the radiation component 17 is more likely to heat the nearby airflow to a higher temperature, which reduces the heat dissipation efficiency of the radiation component 17. Not only is the radiation component 17 prone to overheating, it may also further cause the entire drying equipment 10 to overheat, posing the possibility of scalding the user. Moreover, according to the principle of blackbody radiation, when the radiation component 17 operates at a higher temperature, spectral drift may also occur, causing the wavelength of the emitted infrared radiation to change, thereby affecting the drying time. Therefore, the ambient air pressure at which the heat dissipation efficiency of the radiation component 17 is too low is determined in advance through simulation, experimental testing, etc., and stored as a threshold.

[0139] If it is lower than the threshold, the operating power of the radiation component 17 is reduced.

[0140] During operation of the drying apparatus 10, if the ambient air pressure detected by the air pressure module 13 falls below a threshold, the main control module 14 correspondingly reduces the current operating power of the radiation assembly 17. This prevents overheating of the radiation assembly 17 and the overall heating of the drying apparatus 10, while also maintaining the radiation assembly 17 within a suitable operating temperature range, thereby ensuring that the radiation assembly 17 emits infrared radiation of the preset wavelength.

[0141] It will be readily understood that, similar to the aforementioned radiation component 17, in other embodiments, the drying device 10 may also include other power-consuming components, such as a negative ion component or a hair care essential oil component. These power-consuming components will also generate heat during operation, thereby increasing the heat output of the entire drying device 10. Since the heat dissipation efficiency of the drying device 10 decreases when the ambient pressure is low, the main control module 14 must adjust the power of all power-consuming components of the drying device 10 based on the ambient pressure to ensure the heat dissipation efficiency of the entire drying device 10 and prevent overheating of the housing 16.

[0142] In certain embodiments of the present application, a readable storage medium is further provided. The readable storage medium stores a program, and when the program is executed by a processor, each step of the aforementioned control method is implemented.

[0143] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0144] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0145] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0146] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A drying device, characterized in that: include: A wind component for generating airflow; a heating component for heating the airflow; Air pressure module, used to obtain ambient air pressure The main control module is connected to the heating component and the air pressure module, and is configured to control the operation of the wind power component and / or the heating component according to the ambient air pressure.

2. The drying device according to claim 1, characterized in that The heating component includes multiple groups of heating structures, and the main control module can control the opening and closing and / or power value of each heating structure.

3. The drying device according to claim 1, characterized in that It also includes a shell, an air flow channel is provided in the shell, and the wind power component is configured to generate air flow in the air flow channel.

4. The drying device according to claim 3, characterized in that The air pressure module is disposed in the air flow channel.

5. The drying device according to claim 3, characterized in that: The heating assembly comprises: A first component is located in the air flow channel and upstream of the wind power component; The second component is located in the air flow channel and downstream of the wind power component.

6. The drying device according to claim 3, characterized in that The housing has a first air inlet, a second air inlet, and an air outlet, and the air flow channel includes: a first air duct connected between the first air inlet and the air outlet; a second air duct, the second air duct being connected to the second air inlet upstream and to the first air duct or the air outlet downstream; The wind power component is arranged in the first air duct; The air pressure module is disposed in the first air duct or the second air duct.

7. The drying device according to claim 6, characterized in that It also includes a control circuit, which is arranged in the second air duct, and the air pressure module and the main control module are both arranged on the control circuit, and the control circuit is electrically connected to the wind power component and the heating component.

8. The drying device according to any one of claims 1 to 7, characterized in that: It also includes a radiation component capable of outputting infrared radiation, the radiation component is connected to the main control module, and the main control module is configured to adjust the operating power of the radiation component according to the ambient air pressure.

9. A control method for controlling the drying device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Obtain the ambient air pressure through the air pressure module; The operation of the wind power component and / or the heating component is controlled according to the ambient air pressure.

10. The control method according to claim 9, characterized in that: The controlling the operation of the heating component and / or the wind power component according to the ambient air pressure includes: Determine the working mode; Obtaining a preset power, where the preset power is a power value of the heating component when the drying device operates in the working mode at a preset air pressure; According to the relationship between the ambient air pressure and the preset air pressure, a control power is obtained based on the preset power; The operation of the heating component is controlled according to the control power.

11. The control method according to claim 10, characterized in that: Different working modes have different wind temperatures, and the wind temperature is used to represent the temperature of the airflow output by the drying device; The obtaining of the controlled power based on the preset power includes: If the ambient pressure is greater than the preset pressure, increasing the power based on the preset power to obtain the control power; If the ambient pressure is lower than the preset pressure, the control power is obtained based on the preset power reduction.

12. The control method according to claim 10, characterized in that: Different working modes have different drying times, and the drying time is used to represent the time taken by the drying device to dry the target object from a first moisture content to a second moisture content; The obtaining of the controlled power based on the preset power includes: If the ambient pressure is greater than the preset pressure, reducing the power based on the preset power to obtain the control power; If the ambient pressure is lower than the preset pressure, the control power is obtained based on the preset power increase.

13. The control method according to any one of claims 10 to 12, characterized in that: The controlling the operation of the wind power component and / or the heating component according to the ambient air pressure further includes: If the control power is greater than the upper power limit of the heating component; Obtaining a preset rotational speed, where the preset rotational speed is the rotational speed of the wind power component when the drying device operates in the working mode at a preset air pressure; reducing the preset speed to obtain a controlled speed; The operation of the heating component is controlled according to the power upper limit, and the operation of the wind power component is controlled according to the controlled rotation speed.

14. The control method according to any one of claims 10 to 12, characterized in that: There are multiple preset air pressures; The obtaining of the preset power includes: Calculating the absolute value of the difference between the ambient air pressure and each of the preset air pressures; The preset air pressure with the smallest absolute value is selected, and the preset power corresponding to the preset air pressure is used as the control power.

15. The control method according to any one of claims 10 to 12, characterized in that: There are multiple preset air pressures; The obtaining of the preset power includes: Obtaining a fitting function according to the plurality of preset air pressures and the corresponding preset powers; The control power corresponding to the ambient air pressure is obtained according to the fitting function.

16. The control method according to claim 9, characterized in that: The drying device includes a radiation component, and the control method further includes the following steps: determining whether the ambient air pressure is below a threshold; If it is lower than the threshold, the operating power of the radiation component is reduced.

17. The control method according to claim 9, characterized in that: The air pressure module is located in the air flow path formed by the wind power component. Before obtaining the ambient air pressure through the air pressure module, the method further includes: When the wind power component is not running or the running time is less than a preset value, the ambient air pressure is obtained through the air pressure module.

18. A readable storage medium storing a program, characterized in that: When the program is executed by a processor, the steps of the control method according to any one of claims 9 to 17 are implemented.

Images