Clothes dryer and intelligent clothes drying control method

Abstract

The invention relates to the field of clothes drying, in particular to a clothes dryer and an intelligent clothes drying control method.The clothes dryer comprises a hook device, a shell, a drying device, a force sensor, a control panel, a clothes rail device, a humidity sensor and a clothes drying bag; the inner wall of the hot air channel is made of a nano coating material with low thermal resistance and high temperature resistance, the drying device comprises a fan with a speed change function, a PTC ceramic heater and an infrared heating module, the fan is arranged in the hot air channel, and the PTC ceramic heater is arranged in the hot air channel and located in front of the air outlet end of the fan; the inner wall of the hot air channel is made of a low-thermal-resistance and high-temperature-resistant nano coating material, so that the thermal resistance can be effectively reduced, the hot air heat transfer efficiency is improved, the hot air temperature is more uniform, the output is more stable, the clothes drying time is shortened, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the field of clothes drying, and particularly to a clothes dryer and an intelligent clothes drying control method. Background Art

[0002] Existing clothes drying equipment mainly includes drum clothes dryers, hanging clothes dryers, and portable clothes drying devices, etc., which are widely used in household and commercial fields. Traditional drum clothes dryers generate hot air through electric heaters or heat pump systems, place clothes in a rotating drum for tumbling heating, thereby accelerating moisture evaporation. However, such equipment is large in volume, high in energy consumption, and there is a certain risk of damage to fabrics that are easy to wrinkle, deform or not resistant to high temperatures.

[0003] In recent years, hanging clothes dryers, as a relatively portable solution, have gradually gained favor among users. Such equipment usually includes a clothes hanging structure and a hot air generating device, and dries clothes by hanging them. However, existing hanging clothes dryers still have the following deficiencies: Most adopt a single hot air heating method, lacking diversified heat source matching, resulting in limited clothes drying efficiency.

[0004] Traditional hanging drying equipment usually does not have the functions of clothes weight perception and humidity dynamic detection, cannot achieve precise control, and is prone to over-drying or incomplete drying.

[0005] The hot air channel structure is simple, the heat resistance of the air duct material is high, and the heat transfer efficiency is low, resulting in increased energy consumption. Summary of the Invention

[0006] The first object of the present invention is to provide a clothes dryer with multiple heating modules, high heat efficiency, and the ability of dynamic perception and intelligent control.

[0007] The second object of the present invention is to provide an intelligent clothes drying control method with multiple heating modules, high heat efficiency, and the ability of dynamic perception and intelligent control.

[0008] The first object of the present invention is achieved as follows: A clothes dryer includes a hook device, a housing, a drying device, a force sensor, a control panel, a clothes hanging rod device, a humidity sensor, and a clothes drying bag. The housing is provided with a hot air channel communicating with the inner cavity of the housing. The inner wall of the hot air channel is made of a nano-coating material with low heat resistance and high temperature resistance. The drying device includes a blower with a speed change function, a PTC ceramic heater, and an infrared heating module. The blower is arranged in the hot air channel, and the PTC ceramic heater is arranged in the hot air channel and in front of the air outlet end of the blower; The PTC ceramic heater includes a frame made of heat-resistant material and a plurality of PTC ceramic blocks made of positive temperature coefficient materials. Each PTC ceramic block is internally provided with four through hot air small channels for hot air circulation; The surface of each PTC ceramic block is coated with a high-temperature resistant insulating coating for preventing short circuits and electrical faults. The plurality of PTC ceramic blocks are arranged in parallel in the frame along the air flow direction, and adjacent two PTC ceramic blocks are connected through a conductive structure. The plurality of PTC ceramic blocks are connected to a control panel in series or in parallel; The hook device is movably connected to the housing for hanging a dryer; The clothes hanger rod device is movably connected to the housing, and the clothes hanger rod device is located at the outlet of the hot air channel; The drying bag is arranged on the housing in a detachable or fixed manner, and the hot air channel is communicated with the drying bag; The infrared heating module is arranged in the inner cavity of the housing and faces the drying bag to form an upper direct illumination heating structure; The force sensor is arranged in the housing. The force sensor, the blower and the infrared heating module are respectively electrically connected to the control panel. The hook device or the clothes hanger rod device contacts the force sensor, and the force received by the hook device or the clothes hanger rod device is transmitted to the control panel through the force sensor; The humidity sensor is arranged on the housing and / or the drying bag, and the humidity sensor is electrically connected to the control panel.

[0009] The inner wall of the hot air channel made of a nano-coating material with low thermal resistance and high temperature resistance can effectively reduce the thermal resistance, improve the hot air heat transfer efficiency, make the hot air temperature more uniform and the output more stable, shorten the drying time and reduce the energy consumption.

[0010] By organically combining a blower with variable speed function, a PTC ceramic heater and an infrared heating module, the heating mode can be intelligently switched or superimposed according to the clothing material and humidity conditions, achieving both rapid preheating and deep drying, which can not only protect easily wrinkled and deformed fabrics, but also meet the high-efficiency drying requirements of heavy clothes.

[0011] Coating the surface of the PTC ceramic block with a high-temperature resistant insulating coating and connecting adjacent ceramic blocks in series and parallel through a conductive structure enhances the electrical safety and reliability of the heating component; the force sensor is linked with the hook / clothes hanger rod, which can detect the load change in real time and feedback it to the control panel, so as to automatically adjust the drying power and time, and avoid over-baking or uneven drying.

[0012] The drying bag is detachable or fixedly installed, and is combined with an infrared heating module facing the drying bag, so that the dual action of hot air and infrared radiation directly reaches the surface of the clothes; combined with a humidity sensor to dynamically monitor the environmental moisture, the overall system forms an intelligent closed-loop control, with portability, energy saving and refined drying effects.

[0013] The first object of the present invention can also be solved by the following technical measures: Further, a notch is opened at the top of the housing. The hook device includes a hook, a rotating shaft and a base. A notch is opened on the side wall of the base. The base is fixed in the housing and located at the bottom of the notch. The notch and the inner wall of the housing enclose a shaft hole; The tail of the hook passes through the notch and is placed in the base. The rotating shaft passes through the tail of the hook, and the end of the rotating shaft extends into the corresponding shaft hole to realize the rotational connection between the hook and the housing. The hook rotates into or out of the notch; The force sensor is arranged in the shaft hole and above the rotating shaft, and the force on the hook is transmitted to the force sensor.

[0014] This hook structure realizes the rotational connection by using the shaft hole formed by the top notch and the base notch in cooperation with the rotating shaft. The mechanism is compact, the installation is simple, no additional bracket is required, and the reliable integrated design of the hook and the housing is realized, improving the structural stability and aesthetics of the whole machine.

[0015] The tail of the hook directly passes through the notch and is locked by the rotating shaft, so that the torque generated when the hook bears the weight is transmitted to the base through the rotating shaft, avoiding the risk of loosening or falling off, and improving the safety and reliability when hanging clothes.

[0016] Placing the force sensor in the shaft hole and above the rotating shaft can accurately measure the force on the hook, realize the real-time collection and feedback of the force data of the hook; combined with the intelligent algorithm of the control panel, the drying mode can be automatically adjusted according to the weight of the clothes, further improving the drying efficiency and the clothing protection effect.

[0017] Further, the clothes hanger device includes a clothes hanger, a bolt and a seat body. The housing is provided with a lower receiving groove. The force sensor is placed in the lower receiving groove. The seat body is placed at the bottom of the lower receiving groove. The bolt passes through the force sensor and the lower receiving groove to connect the seat body; The ends of the clothes hanger are respectively connected to the corresponding seat bodies, so that the clothes hanger is rotatably arranged at the hot air channel, and the force on the clothes hanger is transmitted to the force sensor.

[0018] This structure realizes the reliable installation of the clothes hanger by setting a receiving groove at the lower part of the housing, placing the seat body and the force sensor in the groove, and then connecting them through a bolt. The mechanism is compact and integrated, and no additional support is required to realize the reliable installation of the clothes hanger, simplifying the manufacturing and maintenance processes, and improving the overall integration and aesthetics of the system.

[0019] The end of the clothes - hanging rod is connected to the seat body in a rotational connection manner, enabling the clothes - hanging rod to rotate freely at the hot - air channel. This not only facilitates the user to flexibly adjust the hanging angle according to the number and size of clothes, but also ensures the best hot - air coverage in the air duct, thereby improving the dryness uniformity and efficiency of the clothes.

[0020] The force sensor is directly placed in the lower receiving groove and fastened to the seat body by bolts, enabling the force exerted on the clothes - hanging rod to be reliably transmitted to the sensor through the seat body and bolts, eliminating force loss and error in the intermediate links, improving the accuracy and stability of weight detection, and ensuring that the system can accurately sense the change in the wet weight of the clothes.

[0021] Relying on precise force measurement, the control panel can dynamically adjust the fan speed and heating power according to real - time load data to achieve intelligent closed - loop control. This can not only effectively avoid damage to clothes caused by over - drying, but also maximize energy conservation while ensuring the dryness effect of the clothes.

[0022] Furthermore, the housing includes an outer shell and an inner shell. The inner shell has an open bottom, and the inner shell is provided with a cavity for clamping the drying bag. The cavity is provided with clamping parts at intervals. The inner shell is provided with the hot - air channel that penetrates up and down. The top of the inner shell is provided with an upper receiving groove, and air holes communicating with the upper receiving groove are spaced apart at the bottom of the upper receiving groove. The humidity sensor is arranged in the upper receiving groove; The inner shell is fixed in the inner cavity of the outer shell. A wind channel is formed between the outer shell and the inner shell. The wind channel is communicated with the hot - air channel. The outer shell is provided with an air inlet communicating with the wind channel. The area between the open bottom of the inner shell and the outlet of the hot - air channel forms a drying - bag storage cavity for storing the drying bag. The control panel is arranged on the side wall of the outer shell; The drying bag includes an outer - layer metal coating, an inner - layer non - sticky polymer coating, and an intermediate heat - insulating layer. The intermediate heat - insulating layer is a moisture - permeable and water - impermeable film that enables water vapor to escape and prevents hot steam from accumulating in the bag. The top of the drying bag is provided with a wind - guiding ring opening for air - tight connection with the hot - air channel of the housing. A circular clamping part is formed around the wind - guiding ring opening at the top of the drying bag. Exhaust holes with a pore diameter of 0.3 mm to 0.8 mm are spaced apart around the wind - guiding ring opening at the top of the drying bag; The circular clamping part is inserted into the cavity, and the clamping part and the circular clamping part are clamped, realizing the assembly of the drying bag and the drying machine. The wind - guiding ring opening is communicated with the hot - air channel; The drying bag further includes elastic partitions and / or rotatable wind - guiding vanes. The elastic partitions are fixedly arranged at intervals on the inner wall of the drying bag. The wind - guiding vanes are installed inside the inner wall of the drying bag through a rotating shaft rod. The wind flow is used to drive the wind - guiding vanes to rotate automatically, thereby guiding the distribution of hot air and separating the clothes.

[0023] This structure realizes the rapid disassembly and airtight connection of the dryer bag by double fitting of the outer shell and the inner shell with the bottom opening, and utilizes the clamping part in the groove cavity of the inner shell to cooperate with the annular clamping part of the dryer bag, which not only simplifies the loading and unloading process, but also ensures the close fit between the hot air channel and the dryer bag, avoids hot air leakage, and improves the overall heating efficiency.

[0024] The dry clothes bag uses an outer metal coating to reflect heat radiation, an inner anti-stick polymer coating to reduce fabric adhesion, and a moisture-permeable and waterproof membrane in the middle, which can effectively keep warm while expelling water vapor, preventing steam retention, reducing condensation and bacterial growth, thereby improving the drying quality and sanitary safety of clothes.

[0025] The through hot air channel and the upper and lower connected air channels arranged on the upper part of the inner shell cooperate with the air inlet of the outer shell to form an optimized airflow path, so that the air intake, heating and air supply links are interconnected, and the hot air is evenly distributed between the inner and outer shells and in the drying bag, further shortening the drying cycle and reducing energy consumption.

[0026] The humidity sensor in the upper receiving slot can monitor the humidity changes in the dryer bag in real time, and dynamically adjust the fan speed and heating power through the control panel to achieve closed-loop precise humidity control, which not only prevents damage to clothes due to over-drying, but also avoids reduced drying efficiency due to excessive humidity.

[0027] The elastic partitions and rotatable air guide blades installed in the drying bag automatically separate and guide hot air with the help of wind flow, so that the clothes in the bag are evenly heated and avoid stacking on each other, further improving the uniformity of drying. At the same time, intelligent air separation can be achieved without additional drive, enhancing the reliability of the system and user experience.

[0028] Furthermore, it also includes an electrostatic release device and a module box, the electrostatic release device includes a conductive copper sheet and a wire, the conductive copper sheet is arranged on the outer wall of the hot air channel and extends toward the air guide ring opening, and the conductive copper sheet is connected to the grounding end of the control panel through the wire to form a grounding circuit; The control panel controls the conductive copper sheet to be connected to the ground circuit at the end of the drying stage, so that static electricity on the surface of the clothes is released to the ground through the conductive copper sheet, thereby reducing the amount of electricity charged on the clothes.

[0029] A module box accommodating cavity is formed on the inner wall of the hot air channel, and a fragrance module and / or an antibacterial module is installed in the module box. The module box is detachably arranged in the module box accommodating cavity. The wind generated by the fan passes through the module box to generate gas with fragrance and / or antibacterial molecules and is transported to the drying bag to improve the freshness and hygiene of the clothes after drying.

[0030] The electrostatic discharge device can actively discharge the static electricity on the clothing surface to the ground at the end of the drying process by arranging conductive copper sheets on the outer wall of the hot air channel and grounding them, effectively reducing the static electricity carried by the clothing, reducing the risks of static breakdown and dust adsorption during wearing, and enhancing the use safety and wearing comfort.

[0031] The electrostatic discharge function is integrated into the intelligent control of the control panel. The static electricity can be eliminated without additional operations, seamlessly connected with the drying process, without prolonging the overall drying time or increasing the equipment complexity, maintaining the simplicity of operation and the high reliability of the system.

[0032] The fragrance module and / or the antibacterial module can be detachably installed in the accommodation cavity of the module box. When the hot air generated by the blower passes through the module, it automatically carries the fragrance or antibacterial molecules and directly conveys them to the drying bag, not only making the clothing more fresh and pleasant after drying, but also inhibiting the growth of bacteria, enhancing the hygienic performance of the clothing and the user experience.

[0033] The detachable module design facilitates users to freely replace and maintain according to their needs. Different fragrance types or antibacterial agents can be matched as required to achieve personalized drying. Moreover, the module box is closely combined with the hot air channel design, without affecting the hot air flow rate and temperature distribution, taking into account both the functional expandability and the drying efficiency.

[0034] Further, it also includes a bottom cover, a magnetic metal sheet and a magnet sheet. The bottom cover is provided with an elastic sealing ring matching the shape of the edge of the shell, and the bottom cover is rotatably arranged on the shell; The magnet sheet is arranged on the bottom cover, and the magnetic metal sheet is arranged at the bottom of the shell; When the bottom cover rotates to the side wall of the shell, the slot cavity on the shell is exposed for inserting and fixing the annular clamping part of the drying bag, so that the drying bag is naturally vertical under the action of gravity; When the bottom cover rotates to the bottom of the shell, the magnet sheet and the magnetic metal sheet are adsorbed together, and the bottom cover is attached to the edge of the shell by magnetic force to close the storage cavity of the drying bag, and the elastic sealing ring seals the gap between the bottom cover and the shell.

[0035] The quick and tool-free opening and closing operation between the bottom cover and the shell is realized through the elastic sealing ring and magnetic adsorption. The user only needs to rotate the bottom cover to complete the disassembly, installation and sealing of the drying bag. The operation is simple and convenient. At the same time, the combined action of the sealing ring and magnetic adsorption effectively blocks the leakage of hot air and water vapor, ensuring the hot air circulation efficiency and preventing the water vapor from overflowing.

[0036] When the bottom cover exposes the slot cavity, the annular clamping part of the drying bag can be conveniently inserted, making the drying bag naturally vertical and firmly fixed under the action of gravity, avoiding the displacement of the drying bag due to wind force or shaking during the drying process, and enhancing the uniform heating and drying effect of the clothing.

[0037] After the bottom cover rotates to the bottom of the housing, the magnet sheet adsorbs to the magnetic metal sheet at the bottom of the housing, forming a tight closed structure. Coupled with the fitting of the elastic sealing ring, it not only improves the airtightness of the whole machine, but also effectively isolates the storage cavity before and after drying, preventing the leakage of odors and keeping the inside of the cabinet clean.

[0038] Further, the PTC ceramic heater is fixed to the inner wall of the hot air channel in an interference fit manner, and a protective grille made of high-temperature resistant material is provided at the outlet of the hot air channel; When the control panel activates the drying function, it allows current to flow through the PTC ceramic block. The grains inside the ceramic undergo a self-heating effect after being energized, causing the temperature to rise rapidly. The airflow generated by the blower passes through the small hot air channels of the PTC ceramic block, and the air is heated to form hot air, which is then transported to the drying bag through the hot air channel.

[0039] By fixing the PTC ceramic heater to the inner wall of the hot air channel in an interference fit manner, the firm fitting between the PTC ceramic heater and the hot air channel is ensured, reducing the thermal resistance and vibration loss, and enabling the heat to be conducted to the airflow more efficiently.

[0040] Setting a high-temperature resistant protective grille at the outlet of the hot air channel can not only effectively prevent foreign objects or hands from accidentally contacting the heating element, improving the safety of use, but also keep the ventilation unobstructed, avoiding the obstruction of hot air output, and thus maintaining a stable drying performance.

[0041] The control panel intelligently regulates the current flowing into the PTC ceramic block, utilizes the PTC self-heating effect to achieve rapid temperature rise, and cooperates with a variable-speed blower to send out hot air through the small channels, enabling the system to reach the preset temperature in a short time, shortening the preheating and drying cycles, and improving the drying efficiency and user experience.

[0042] Further, the dryer further includes a temperature control protection module, and the temperature control protection module includes a thermistor and a bimetallic thermostatic switch; The thermistor is installed on the air inlet side surface of the PTC ceramic heater and is electrically connected to the control panel. It is used to monitor the surface temperature of the PTC ceramic heater in real time. When the detected temperature exceeds the preset threshold, it feeds back a temperature signal to the control panel, and the control panel adjusts the heating power or turns off the PTC ceramic heater accordingly; The bimetallic thermostatic switch is arranged on the air outlet side of the PTC ceramic heater and is connected in series with the PTC ceramic heater. When the temperature at this position rises to the set safety limit value, the bimetallic sheet undergoes mechanical deformation due to thermal expansion and automatically disconnects the electrical contact, realizing the physical power-off protection of the PTC ceramic heater; A wind flow equalizing plate made of a flame-retardant and high-temperature-resistant material is provided in the hot air channel between the PTC ceramic heater and the blower. A plurality of uniformly arranged air guiding holes are formed in the wind flow equalizing plate for guiding air flow to uniformly enter the hot air small channels of the PTC ceramic blocks.

[0043] The thermistor arranged on the PTC air inlet side can monitor the surface temperature of the heater in real time, feed back accurate data to the control panel, and automatically adjust the heating power or cut off the power supply according to the threshold value to prevent thermal degradation or safety hazards caused by overheating.

[0044] A bimetallic thermostatic switch is connected in series on the air outlet side. When the temperature exceeds the limit, the circuit can be quickly cut off through mechanical deformation, realizing physical power-off protection for the PTC ceramic heater, providing a second over-temperature protection for the system, and greatly improving the reliability and safety of the equipment.

[0045] Adding a flame-retardant and high-temperature-resistant wind flow equalizing plate between the heater and the blower and arranging the air guiding holes evenly can optimize the air flow distribution, reduce local turbulence and noise. At the same time, it can ensure that the air flow in each PTC small channel is consistent, improving the uniformity and comfort of drying clothes.

[0046] Furthermore, the wind flow equalizing plate is a composite plate body made of a glass fiber reinforced polymer embedded with a silicon aluminum fiber mesh. The surface of the wind flow equalizing plate is etched with pore patterns with a pore diameter of 0.1–0.3 mm and a depth of 0.05–0.1 mm for optimizing the laminar flow of air and reducing turbulent noise. And a thin film grade nano fluorosilane coating for hydrophobic and oleophobic functions is sprayed inside the pore patterns. The thin film grade nano fluorosilane coating is also superimposed with a titanium dioxide nanoparticle photocatalytic coating for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate.

[0047] Using a composite wind flow equalizing plate of glass fiber reinforced polymer embedded with silicon aluminum fiber mesh has both high strength, high temperature resistance and excellent heat insulation performance. It can withstand high-temperature air flow for a long time without deformation or aging.

[0048] The micro-pore textures (pore diameter 0.1–0.3 mm, depth 0.05–0.1 mm) etched on the plate surface help to laminarize the air flow, reduce turbulent noise, make the clothes drying process quieter and more comfortable, and at the same time enhance the uniformity of the distribution of hot air through fine diversion.

[0049] Spraying a nano fluorosilane hydrophobic and oleophobic coating inside the micro-pores makes the surface of the wind flow equalizing plate self-cleaning and not easy to accumulate oil stains or water mist. Combined with the titanium dioxide photocatalytic antibacterial coating, it realizes the long-term antibacterial and self-cleaning function, effectively inhibits the growth of bacteria, keeps the air duct clean, and improves the drying hygiene performance and maintenance convenience.

[0050] The second object of the present invention is achieved as follows: An intelligent clothes drying control method, comprising the following steps: Step 1: The user hangs the clothes on the clothes hanger device, and the user starts the intelligent drying mode through the control panel. The drying device, the force sensor, and the humidity sensor are started. The drying device generates hot air that passes through the hot air channel and blows towards the drying bag to dry the clothes. Step 2: When the preset time is reached, the force sensor transmits the force condition at the preset time to the control panel. The control panel calculates the difference between the force at the last preset time and the force at the current preset time, so as to obtain the weight change value of the clothes. At the same time, the control panel compares the weight change value with the preset change value. The humidity sensor transmits the humidity condition to the control panel. The control panel records it as the humidity of the clothes. At the same time, the control panel compares the humidity of the clothes with the preset humidity. Step 3: When the weight change value > the preset change value, execute Step 2; When the humidity of the clothes > the preset humidity, execute Step 2; When the weight change value ≤ the preset change value and the humidity of the clothes ≤ the preset humidity are both satisfied, the heating element of the drying device stops working. At the same time, the fan of the drying device continues to work to generate cold air. The cold air passes through the hot air channel and blows towards the drying bag to cool the clothes until the preset cooling time ends. Step 4: After the preset cooling time ends, the dryer shuts down, and the drying device, the force sensor, and the humidity sensor are powered off.

[0051] Through the collaborative detection of the force sensor and the humidity sensor, this method can monitor the changes in the weight and moisture content of the clothes in real time, form an intelligent closed-loop control, accurately judge the drying state of the clothes, and avoid energy consumption waste and clothing damage caused by over-drying.

[0052] Dynamically adjust the heating and cooling stages according to the preset thresholds. That is, automatically switch to cold air cooling after both the humidity and weight meet the requirements, and continuously feedback and iterate the detection during the drying process to ensure that the drying process is both efficient and gentle, taking into account the drying effect and clothing protection.

[0053] Automatically enter the cold air mode after the heating ends, which can quickly reduce the surface temperature of the clothes, reduce the thermal stress and wrinkle formation of the fabric caused by high temperature, and improve the wearing experience; automatically power off and shut down after the cooling ends, realizing unattended operation throughout the process, greatly improving the user convenience and safety.

[0054] The second object of the present invention can also be solved by the following technical measures: Further, the preset time is 10 min, the preset change value is 1 g, the preset humidity is 10%RH, and the preset cooling time is 15 S.

[0055] With a 10-minute detection cycle, it can promptly capture the subtle changes in the evaporation of moisture from clothes while ensuring sufficient drying time, which not only improves the drying efficiency but also prevents temperature fluctuations caused by frequent switching.

[0056] The setting of a weight change threshold of 1 g and a humidity threshold of 10 %RH can achieve sensitive response to the moisture content characteristics of different fabrics, ensuring that any lightweight or heavy clothing can be accurately sensed and precisely dried.

[0057] The short 15-second cooling can not only quickly balance the temperature of the clothes and reduce thermal stress but also save system resources, taking into account the dual requirements of protecting the fabric and energy conservation and consumption reduction.

[0058] Furthermore, it also includes a buzzer and a network module. The buzzer and the network module are arranged inside the housing. The buzzer and the network module are respectively electrically connected to the control panel. After the dryer reaches the preset cooling time, the control panel activates the buzzer, and the buzzer emits a prompt sound. At the same time, the control panel activates the network module, and the network sends a dryness completion message to the user's mobile phone.

[0059] The prompt sound of the buzzer can visually inform the user to take out the clothes at the end of the cooling stage, avoiding the embarrassment of re-moisture or forgetting to take the clothes due to ignoring the signal. The network module remotely pushes the drying completion notification, enabling the user to promptly learn about the drying situation regardless of their location, further enhancing the smart home experience and the convenience of life. This function requires no additional operation and is completely automatically triggered by the control panel, achieving a seamless connection between the drying process and user reminder, enhancing the interactivity and user-friendly design of the product.

[0060] The beneficial effects of the present invention are as follows: In the present invention, by combining the hot air channel with a low thermal resistance nano-coating, PTC self-heating and infrared direct irradiation heating modules, it can quickly heat up and the hot air distribution is uniform, greatly shortening the preheating and drying time while reducing energy consumption.

[0061] In the present invention, the force sensor and the humidity sensor respectively monitor the weight change and moisture content of the clothes in real time. The control panel dynamically adjusts the heating and cooling stages according to the preset thresholds, avoiding over-drying or under-drying phenomena and achieving a precise and gentle drying effect.

[0062] In the present invention, through the PTC ceramic heater fixed by interference fit, the thermistor and the bimetal temperature control switch for two-way over-temperature protection, the protective grille and the electrostatic discharge device, all potential hazards such as overheating, electrical short circuit, and electrostatic accumulation are completely eliminated, ensuring safe use.

[0063] The present invention, with functions such as a detachable fragrance / antibacterial module, a moisture-permeable and waterproof structure for the drying bag, automatic cold air cooling, buzzer and network reminder, etc., meets the diverse needs of users for freshness, hygiene, portability and intelligence, and comprehensively improves the usability and experience. Description of the Drawings

[0064] Figure 1 Schematic diagram of the dryer in Embodiment 1.

[0065] Figure 2 Exploded view of the dryer in Embodiment 1.

[0066] Figure 3 Schematic diagram of the combination of the dryer and the drying bag in Embodiment 1.

[0067] Figure 4 For Figure 3 Partial cross-sectional view.

[0068] Figure 5 For Figure 3 Cross-sectional view.

[0069] Figure 6 Intelligent drying control method of the dryer in Embodiment 1.

[0070] Figure 7 Schematic diagram of the hot air channel of the dryer in Embodiment 1.

[0071] Figure 8 Schematic diagram of the PTC ceramic heater in Embodiment 1.

[0072] Figure 9 Schematic diagram of the PTC ceramic block in Embodiment 1.

[0073] Figure 10 Schematic diagram of the air flow balance plate in Embodiment 1.

[0074] Figure 11 Cross-sectional view of the air flow balance plate in Embodiment 1.

[0075] Figure 12 Principle diagram of the dryer in Embodiment 1.

[0076] Figure 13 Cross-sectional view of the combination of the dryer and the drying bag in Embodiment 2.

[0077] Figure 14 Exploded view of the dryer in Embodiment 2 (excluding the outer shell).

[0078] Figure 15 Cross-sectional view of the combination of the dryer and the drying bag in Embodiment 2.

[0079] Figure 16Cross-sectional view of the clothes dryer and the clothes drying bag combination of Example 2 (both the housing and the clothes drying bag are provided with humidity sensors). Detailed implementation manners

[0080] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Example 1, as shown in Figures 1 to 12 A clothes dryer includes a hook device 1, a housing 2, a drying device 3, a force sensor 4, a control panel 5, a clothes hanging rod device 6, a humidity sensor 7, and a clothes drying bag 8. The housing 2 is provided with a hot air channel 21 communicating with the inner cavity of the housing 2. The inner wall of the hot air channel 21 is made of a nano-coating material with low thermal resistance and high temperature resistance. The drying device 3 includes a blower 31 with a speed change function, a PTC ceramic heater 32, and an infrared heating module 33. The blower 31 is arranged in the hot air channel 21, and the PTC ceramic heater 32 is arranged in the hot air channel 21 and in front of the air outlet end of the blower 31; The PTC ceramic heater 32 includes a frame 321 made of a heat-resistant material and a plurality of PTC ceramic blocks 322 made of a positive temperature coefficient material. Each PTC ceramic block 322 is internally provided with four through hot air small channels 3221 for hot air circulation; The surface of each PTC ceramic block 322 is coated with a high-temperature resistant insulating coating for preventing short circuits and electrical failures. The plurality of PTC ceramic blocks 322 are arranged in parallel in the frame 321 along the air flow direction. Adjacent two PTC ceramic blocks 322 are connected through a conductive structure, and the plurality of PTC ceramic blocks 322 are connected to the control panel 5 in series or in parallel; The hook device 1 is movably connected to the housing 2 for hanging the clothes dryer; The clothes hanging rod device 6 is movably connected to the housing 2, and the clothes hanging rod device 6 is located at the outlet of the hot air channel 21; The clothes drying bag 8 is detachably or fixedly arranged on the housing 2, and the hot air channel 21 is communicated with the clothes drying bag 8; The infrared heating module 33 is arranged in the inner cavity of the housing 2 and faces the clothes drying bag 8 to form an upper direct irradiation heating structure; The force sensor 4 is arranged in the housing 2. The force sensor 4, the blower 31, and the infrared heating module 33 are respectively electrically connected to the control panel 5. The hook device 1 contacts the force sensor 4, and the force received by the hook device 1 or the force received by the clothes hanging rod device 6 is transmitted to the control panel 5 through the force sensor 4; The humidity sensor 7 is arranged on the housing 2, and the humidity sensor 7 is electrically connected to the control panel 5.

[0081] Further, a notch 22 is formed at the top of the housing 2. The hook device 1 includes a hook 11, a rotating shaft 12, and a base 13. A notch 131 is formed in the side wall of the base 13. The base 13 is fixed inside the housing 2 and located at the bottom of the notch 22. The notch 131 and the inner wall of the housing 2 enclose a shaft hole 132. The tail of the hook 11 passes through the notch 22 and is placed inside the base 13. The rotating shaft 12 passes through the tail of the hook 11, and the end of the rotating shaft 12 extends into the corresponding shaft hole 132, realizing the rotational connection between the hook 11 and the housing 2. The hook 11 rotates into or out of the notch 22. The force sensor 4 is arranged in the shaft hole 132 and above the rotating shaft 12, and the force applied to the hook 11 is transmitted to the force sensor 4.

[0082] Further, the clothes hanger device 6 includes a clothes hanger 61, a bolt 62, and a seat body 63. The housing 2 is provided with a lower receiving groove 23. The seat body 63 is placed at the bottom of the lower receiving groove 23. The bolt 62 passes through the lower receiving groove 23 to connect the seat body 63. The ends of the clothes hanger 61 are respectively connected to the corresponding seat bodies 63, realizing that the clothes hanger 61 is rotatably arranged at the hot air channel 21.

[0083] Further, the housing 2 includes an outer shell 24 and an inner shell 25. The inner shell 25 is an inner shell 25 with an open bottom. The inner shell 25 is provided with a groove cavity 251 for clamping the drying bag 8. Clamping portions 2511 are arranged at intervals in the groove cavity 251. The inner shell 25 is provided with the hot air channel 21 and the lower receiving groove 23 that penetrate up and down. An upper receiving groove 252 is formed at the top of the inner shell 25. Air holes 2521 communicating with the upper receiving groove 252 are formed at intervals at the bottom of the upper receiving groove 252. The humidity sensor 7 is arranged in the upper receiving groove 252. The inner shell 25 is fixed in the inner cavity of the outer shell 24. An air channel 26 is formed between the outer shell 24 and the inner shell 25. The air channel 26 is communicated with the hot air channel 21. An air inlet 241 communicating with the air channel 26 is formed in the outer shell 24. The area between the open bottom of the inner shell 25 and the outlet of the hot air channel 21 forms a drying bag storage cavity 80 for storing the drying bag 8. The control panel 5 is arranged on the side wall of the outer shell 24. The drying bag 8 includes an outer metal coating 81, an inner anti - sticking polymer coating 82, and an intermediate heat - insulating layer 83. The intermediate heat - insulating layer 83 is a moisture - permeable and water - impermeable film that allows water vapor to escape and prevents hot steam from accumulating inside the bag. A wind - guiding ring opening 84 for air - tight connection with the hot air channel 21 of the housing 2 is provided at the top of the drying bag 8. A circular clamping portion 841 is formed at the top of the drying bag 8 around the wind - guiding ring opening 84. Exhaust holes 842 with a pore diameter of 0.3 mm to 0.8 mm are formed at intervals at the top of the drying bag 8 around the wind - guiding ring opening 84. The annular clamping part 841 is inserted into the cavity 251, and the clamping part 2511 and the annular clamping part 841 are clamped, so that the drying bag 8 and the drying machine unit are assembled together. The air guiding ring opening 84 communicates with the hot air channel 21; The drying bag 8 further includes an elastic spacer 85 and a rotatable air guiding vane 86. The elastic spacer 85 is fixedly arranged at intervals on the inner wall of the drying bag 8. The air guiding vane 86 is installed in the inner wall of the drying bag 8 through a rotating shaft rod. The air flow is used to drive the air guiding vane 86 to rotate automatically, so as to guide the distribution of hot air and separate clothes.

[0084] Furthermore, an electrostatic discharge device and a module box 10 are further included. The electrostatic discharge device includes a conductive copper sheet 9 and a wire. The conductive copper sheet 9 is arranged on the outer wall of the hot air channel 21 and extends towards the air guiding ring opening 84. The conductive copper sheet 9 is connected to the grounding end of the control panel 5 through the wire to form a grounding circuit; At the end of the drying stage, the control panel 5 controls the conductive copper sheet 9 to conduct with the grounding circuit, so that the static electricity on the surface of the clothes is released to the ground through the conductive copper sheet 9, reducing the static electricity of the clothes.

[0085] A module box accommodating cavity 211 is formed on the inner side wall of the hot air channel 21. A fragrance module and an antibacterial module are installed in the module box 10. The module box 10 is detachably arranged in the module box accommodating cavity 211. The air generated by the blower 31 passes through the module box 10 to generate a gas with fragrance and antibacterial molecules and is conveyed to the drying bag 8, so as to improve the freshness and hygienic performance of the clothes after drying.

[0086] Furthermore, a bottom cover 91, a magnetic metal sheet and a magnet sheet are further included. The bottom cover 91 is provided with an elastic sealing ring 911 that matches the shape of the edge of the housing 2. The bottom cover 91 is rotatably arranged on the housing 2; The magnet sheet is arranged on the bottom cover 91, and the magnetic metal sheet is arranged at the bottom of the housing 2; When the bottom cover 91 rotates to the side wall of the housing 2, the cavity 251 on the housing 2 is exposed, which is used to insert and fix the annular clamping part 841 of the drying bag 8, so that the drying bag 8 is naturally vertical under the action of gravity; When the bottom cover 91 rotates to the bottom of the housing 2, the magnet sheet and the magnetic metal sheet are adsorbed together, and the bottom cover 91 is attached to the edge of the housing 2 by magnetic force to close the drying bag storage cavity 80. The elastic sealing ring 911 seals the gap between the bottom cover 91 and the housing 2.

[0087] Furthermore, the PTC ceramic heater 32 is fixed to the inner wall of the hot air channel 21 in an interference fit manner. A protective grille 212 made of high-temperature resistant material is arranged at the outlet of the hot air channel 21; When the control panel 5 activates the drying function, it causes an electric current to flow through the PTC ceramic block 322. The internal grains of the ceramic undergo a self-heating effect after being energized, causing the temperature to rise rapidly. The airflow generated by the blower 31 passes through the hot air small channels 3221 of the PTC ceramic block 322, and the air is heated to form hot air, which is transported to the drying pocket 8 via the hot air channel 21.

[0088] Furthermore, the dryer further includes a temperature control protection module, and the temperature control protection module includes a thermistor 100 and a bimetallic thermostatic switch 200; The thermistor 100 is installed on the air inlet side surface of the PTC ceramic heater 32 and is electrically connected to the control panel 5, and is used to monitor the surface temperature of the PTC ceramic heater 32 in real time. When the detected temperature exceeds the preset threshold, it feeds back a temperature signal to the control panel 5, and the control panel 5 adjusts the heating power or turns off the PTC ceramic heater 32 accordingly; The bimetallic thermostatic switch 200 is arranged on the air outlet side of the PTC ceramic heater 32 and is connected in series with the PTC ceramic heater 32. When the temperature at this position rises to the set safety limit value, the bimetallic sheet generates mechanical deformation due to thermal expansion and automatically disconnects the electrical contact to achieve physical power-off protection of the PTC ceramic heater 32; A wind flow equalizing plate 30 made of a flame-retardant and high-temperature-resistant material is provided in the hot air channel 21 between the PTC ceramic heater 32 and the blower 31. A plurality of uniformly arranged air guiding holes 301 are opened on the wind flow equalizing plate 30, which are used to guide the air flow to uniformly enter the hot air small channels 3221 of the PTC ceramic block 322.

[0089] Furthermore, the wind flow equalizing plate 30 is a composite plate body made of a glass fiber-reinforced polymer 303 embedded with a silicon aluminum fiber mesh 302. The surface of the wind flow equalizing plate 30 is etched with pore patterns 304 with a pore diameter of 0.1 - 0.3 mm and a depth of 0.05 - 0.1 mm for optimizing the air flow laminarization and reducing the turbulent noise. And a thin-film nano fluorosilane coating 305 for hydrophobic and oleophobic functions is sprayed inside the pore patterns 304. The thin-film nano fluorosilane coating 305 is also overlaid with a titanium dioxide nano-particle photocatalytic coating 306 for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate 30.

[0090] An intelligent drying control method includes the following steps: Step 1: The user hangs the clothes on the clothes hanger device 6. The user activates the intelligent drying mode through the control panel 5, and the drying device 3, the force sensor 4, and the humidity sensor 7 are activated. The drying device 3 generates hot air that blows through the hot air channel 21 to the drying pocket 8 for drying the clothes; Step 2: When the preset time is reached, the force sensor 4 transmits the force condition at the preset time to the control panel 5, and the control panel 5 calculates the difference between the force at the last preset time and the force at this preset time, thereby obtaining the weight change value of the clothing, and the control panel 5 compares the weight change value with the preset change value; The humidity sensor 7 transmits the humidity condition to the control panel 5, which records it as the humidity of the clothes. Meanwhile, the control panel 5 compares the humidity of the clothes with the preset humidity; Step 3: When the weight change value is greater than the preset change value, execute step 2; When the clothing humidity is greater than the preset humidity, proceed to step 2; When the weight change value is less than or equal to the preset change value and the clothes humidity is less than or equal to the preset humidity, the heating element of the drying device 3 stops working, and the fan 31 of the drying device 3 continues to work to generate cold air, which is blown to the drying bag 8 through the hot air channel 21 to cool the clothes until the preset cooling time ends; Step 4: After the preset cooling time is over, the clothes dryer is turned off, and the drying device 3, the force sensor 4 and the humidity sensor 7 are powered off.

[0091] Furthermore, the preset time is 10 minutes, the preset change value is 1 g, the preset humidity is 10% RH, and the preset cooling time is 15 seconds.

[0092] Furthermore, it also includes a buzzer 300 and a network module 400, which are arranged in the shell 2, and the buzzer 300 and the network module 400 are electrically connected to the control panel 5 respectively. After the dryer reaches the preset cooling time, the control panel 5 starts the buzzer 300, and the buzzer 300 emits a prompt sound. At the same time, the control panel 5 starts the network module 400, and the network sends a drying end information to the user's mobile phone.

[0093] The drying process of the clothes dryer: after the user hangs the clothes on the clothes hanging rod 61, the intelligent drying mode is started through the control panel 5. The system immediately drives the variable speed fan 31, the PTC ceramic heater 32 and the infrared heating module 33 to inject hot air into the hot air channel 21. The hot air evenly enters the drying bag 8 through the nano-coating channel to preheat the clothes and accelerate the evaporation of water. At the same time, the force sensor 4 and the humidity sensor 7 respectively detect the weight change of the clothes and the humidity in the bag at a regular time, and send the data back to the control panel 5 to compare with the preset threshold value. If the weight or humidity is still high, the heating is continued and the cyclic monitoring is carried out until the weight change value is ≤ the preset change value and the clothes humidity is ≤ the preset humidity. When both conditions are met, the system cuts off the heating element and only allows the fan 31 to send out cold air for short-term cooling. After the cooling is completed, the system automatically cuts off the power and shuts down, and prompts through the buzzer 300 and pushes notifications through the network module 400, completing the whole process of unattended, efficient, accurate and safe drying.

[0094] Working principle of the PTC ceramic heater 32: The PTC (Positive Temperature Coefficient) ceramic heater utilizes the property that its material resistance rapidly increases with the rise in temperature. When an external voltage causes current to pass through the conductive phase inside the ceramic block, Joule heat is generated between ceramic particles, causing its temperature to rise rapidly. As the temperature approaches the Curie point of the material, the resistance increases sharply, automatically limiting the current, thereby achieving the "self-limiting temperature" effect and maintaining a stable temperature without a complex temperature control circuit. The design of four through small channels not only increases the surface area but also provides a good air flow path for the blower 31 to supply air, enabling the heated air to be quickly and evenly distributed into the drying pocket 8, ensuring both the heating speed and avoiding local overheating.

[0095] Working principle of the infrared heating module 33: The infrared heating module 33 emits infrared radiation with a wavelength in the range of 0.75 - 5 μm through a resistance wire or an infrared ceramic plate, mainly far-infrared, which can be efficiently absorbed by the fabric surface layer and water molecules. It does not rely on convective heating but directly transfers energy to the clothing surface and internal water molecules in the form of electromagnetic waves, causing the water molecules to vibrate and quickly vaporize. The infrared direct irradiation on the upper layer of the clothing after passing through the drying pocket 8 can rapidly increase the surface temperature and accelerate moisture release, complementing the hot air heating, enabling more uniform and in-depth drying of the fabric while reducing wrinkles and thermal damage that may be caused by air drying and baking.

[0096] Synergistic advantages of the two: Combining the efficient and stable heat convection of the PTC ceramic heater 32 with the direct radiation heating of the infrared module can not only quickly reach the set value of the chamber temperature within a short time but also take into account the needs of fabric shape protection and deep drying. The blower 31 acts on the clothing with the hot air heated by the PTC and the infrared radiation together, forming a superposition of two heating modes of "external heat and internal penetration" and "hot air coverage", improving the drying efficiency while minimizing thermal stress and fabric damage to the greatest extent.

[0097] How to obtain the weight of the clothes: When the clothes are hung on the clothes hanger rod 61 of the dryer, the weight of the clothes is transmitted through the hook 11 to the bottom rotating shaft 12, and then the rotating shaft 12 transmits this force to the internal force sensor 4. The force sensor 4 can sense the pressure received by the hook 11 and convert this pressure into an electrical signal and transmit it to the control panel 5. The control panel 5 processes the signal, removes the weight interference of the hook 11 itself, and then calculates the actual weight of the clothes. In this way, the dryer can adjust the drying process according to the weight of the clothes to achieve intelligent control.

[0098] How to obtain the humidity of the clothes: During the drying process, the moisture in the clothes evaporates, and the humidity sensor 7 is used to detect the humidity in this part of the air. The wetter the clothes, the higher the water vapor content in the air, and the larger the value read by the humidity sensor 7. Conversely, when the clothes gradually dry, the water vapor in the air decreases, and the humidity value measured by the sensor also decreases.

[0099] The dryer continuously monitors this humidity value and combines it with the set target humidity (such as 10%RH) to determine whether the clothes are dry, and then automatically controls the turning on or off of the heater and the blower 31 to achieve automatic heating stop, energy saving and prevent over-drying.

[0100] Example of an intelligent drying control method with specific values: The user hangs about 800 g of clothes on the clothes hanger 61 and starts the "intelligent drying" mode.

[0101] The control panel 5 simultaneously activates the blower 31 (initial rotational speed 1500 rpm), the PTC ceramic heater and the infrared heating module 33, and stabilizes the hot air temperature at 60 °C.

[0102] First detection (t = 10 min): The force sensor 4 measures the current hanging weight as 620 g (a decrease of 180 g compared to the initial value); The humidity sensor 7 measures the relative humidity in the drying bag 8 as 42 %RH.

[0103] Since the weight change of 180 g > 1 g and the humidity of 42 %RH > 10 %RH do not meet the drying standard, the system continues to heat and maintains the rotational speed of the blower 31.

[0104] Second detection (t = 20 min): The weight drops to 540 g (a further decrease of 80 g), and the humidity drops to 28%RH; The conditions are still not both met (weight change of 260 g > 1 g, humidity of 28 %RH > 10 %RH), and continue drying.

[0105] Third detection (t = 30 min): The weight is 505 g (a decrease of 35 g this time), and the humidity is 12%RH; Although the weight change of 295 g > 1 g, but the humidity of 12 %RH > 10 %RH, still need to delay drying.

[0106] Fourth detection (t = 40 min): The weight is 503 g (a decrease of 2 g this time), and the humidity is 9%RH; The weight change of 2 g > 1 g but the humidity of 9 %RH ≤ 10 %RH, not both met, continue detection.

[0107] The fifth detection (t = 50 min): weight 502 g (decreased by 1 g this time), humidity 8%RH; At this time, the weight change is 1 g ≤ 1 g and the humidity is 8 %RH ≤ 10 %RH, triggering the cold air cooling stage.

[0108] Cold air cooling (15 s), stop the heating element, and only let the fan 31 send out cold air at about 25 °C at a low speed of 800 rpm for 15 s to cool down and reduce the thermal stress of the fabric.

[0109] After the cooling is completed, the system automatically cuts off the power, and the buzzer 300 emits a short "beep" sound to remind.

[0110] At the same time, push the "drying completed" notification to the user's mobile phone through the network module 400.

[0111] In this example, the total electricity consumption is about 0.5 kWh, which is about 30% more energy-efficient than traditional constant-time drying, and through precise perception and dynamic temperature control, it avoids damage to clothes caused by over-drying.

[0112] Example 2, in combination with Figures 13 to 16 As shown, the difference between Example 2 and Example 1 is that the hook 11 device 1 includes a hook 11, a rotating shaft 12 and a base 13. A notch 131 is opened on the side wall of the base 13. The base 13 is fixed in the housing 2 and is located at the bottom of the notch 22. The notch 131 and the inner wall of the housing 2 enclose a shaft hole 132; The tail of the hook 11 passes through the notch 22 and is placed in the base 13. The rotating shaft 12 passes through the tail of the hook 11, and the end of the rotating shaft 12 extends into the corresponding shaft hole 132, realizing the rotational connection between the hook 11 and the housing 2, and the hook 11 rotates into or out of the notch 22; The clothes hanger device 6 includes a clothes hanger 61, a bolt 62 and a seat body 63. The housing 2 is provided with a lower receiving groove 23. The force sensor 4 is placed in the lower receiving groove 23. The seat body 63 is placed at the bottom of the lower receiving groove 23. The bolt 62 passes through the force sensor 4 and the lower receiving groove 23 to connect the seat body 63; The ends of the clothes hanger 61 are respectively connected to the corresponding seat bodies 63, realizing that the clothes hanger 61 is arranged at the hot air channel 21 in a rotatable manner, and the force on the clothes hanger 61 is transmitted to the force sensor 4.

[0113] The humidity sensor 7 is respectively arranged on the housing 2 and the drying bag 8.

[0114] How to obtain the weight of the clothes: After the user hangs the clothes on the clothes hanger rod 61, the weight of the clothes will be transmitted to the fixed seat bodies 63 at both ends through the clothes hanger rod 61. Each seat body 63 is connected to the force sensor 4 below by a bolt 62, so that the pressure received by the clothes hanger rod 61 (i.e., the gravity of the clothes) will be conducted to the force sensor 4.

[0115] After the force sensor 4 senses this pressure, it will generate a corresponding electrical signal and transmit it to the control panel 5. According to the magnitude of this signal, the control panel 5 can determine how heavy the clothes currently hanging on the clothes hanger rod are.

[0116] For example, in the present invention, the use of terms: first, second, etc. does not represent any order, quantity or importance, but is only used for distinction.

[0117] For example, in the present invention, the use of terms: a, an, etc. does not represent a limitation of quantity, but represents the existence of at least one of the mentioned objects. For example, in the present invention, the use of terms indicating orientation or position: top, bottom, side, longitudinal, transverse, middle, center, outer, inner, horizontal, vertical, left, right, above, below, etc. means reflecting relative positions rather than absolute positions.

[0118] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A dryer, comprising a hook device, a housing, a drying device, a force sensor, a control panel, a clothes hanger rod device, a humidity sensor and a drying bag, characterized in that: The housing is provided with a hot air channel communicating with the inner cavity of the housing. The inner wall of the hot air channel is made of a nano-coating material with low thermal resistance and high temperature resistance. The drying device includes a blower with a speed change function, a PTC ceramic heater and an infrared heating module. The blower is arranged in the hot air channel, and the PTC ceramic heater is arranged in the hot air channel and in front of the air outlet end of the blower; The PTC ceramic heater includes a frame made of heat-resistant material and a plurality of PTC ceramic blocks made of positive temperature coefficient materials. Each PTC ceramic block is internally provided with four through hot air small channels for hot air circulation; The surface of each PTC ceramic block is coated with a high temperature resistant insulating coating for preventing short circuit and electrical faults. The plurality of PTC ceramic blocks are arranged in parallel in the frame along the air flow direction. Adjacent two PTC ceramic blocks are connected by a conductive structure, and the plurality of PTC ceramic blocks are connected to the control panel in series or in parallel; The hook device is movably connected to the housing for hanging the dryer; The clothes hanger rod device is movably connected to the housing, and the clothes hanger rod device is located at the outlet of the hot air channel; The drying bag is arranged on the housing in a detachable or fixed manner, and the hot air channel is communicated with the drying bag; The infrared heating module is arranged in the inner cavity of the housing and faces the drying bag to form an upper direct illumination heating structure; The force sensor is arranged in the housing. The force sensor, the blower and the infrared heating module are respectively electrically connected to the control panel. The hook device or the clothes hanger rod device contacts the force sensor, and the force received by the hook device or the clothes hanger rod device is transmitted to the control panel through the force sensor; The humidity sensor is arranged on the housing and / or the drying bag, and the humidity sensor is electrically connected to the control panel.

2. The dryer according to claim 1, wherein: A notch is opened at the top of the housing. The hook device includes a hook, a rotating shaft and a base. A notch is opened on the side wall of the base. The base is fixed in the housing and located at the bottom of the notch. The notch and the inner wall of the housing enclose a shaft hole; The tail of the hook passes through the notch and is placed in the base. The rotating shaft passes through the tail of the hook, and the end of the rotating shaft extends into the corresponding shaft hole to realize the rotational connection between the hook and the housing. The hook rotates into or out of the notch; The force sensor is arranged in the shaft hole and above the rotating shaft, and the force received by the hook is transmitted to the force sensor.

3. The dryer according to claim 1, wherein: The clothes hanger rod device includes a clothes hanger rod, a bolt and a seat body. The housing is provided with a lower accommodating groove. The force sensor is placed in the lower accommodating groove. The seat body is placed at the bottom of the lower accommodating groove. The bolt passes through the force sensor and the lower accommodating groove to connect the seat body; The ends of the clothes hanger rod are respectively connected to the corresponding seat bodies to realize that the clothes hanger rod is rotatably arranged at the hot air channel, and the force received by the clothes hanger rod is transmitted to the force sensor.

4. The dryer according to claim 1, characterized in that: The housing includes an outer shell and an inner shell. The inner shell has an open bottom and is provided with a cavity for clamping the drying bag. The cavity is provided with clamping portions at intervals. The inner shell is provided with the hot air channel that penetrates up and down. The top of the inner shell is provided with an upper receiving groove. The bottom of the upper receiving groove is provided with air holes communicating with the upper receiving groove at intervals. The humidity sensor is arranged in the upper receiving groove; The inner shell is fixed in the inner cavity of the outer shell. A wind channel is formed between the outer shell and the inner shell. The wind channel is communicated with the hot air channel. The outer shell is provided with an air inlet communicating with the wind channel. The area between the open bottom of the inner shell and the outlet of the hot air channel forms a drying bag storage cavity for storing the drying bag. The side wall of the outer shell is provided with the control panel; The drying bag includes an outer metal coating, an inner anti-sticking polymer coating and an intermediate heat-insulating layer. The intermediate heat-insulating layer is a moisture-permeable and water-impermeable film that allows water vapor to escape and prevents hot steam from accumulating in the bag. The top of the drying bag is provided with a wind guiding ring opening for airtight connection with the hot air channel of the housing. The top of the drying bag forms an annular clamping portion around the periphery of the wind guiding ring opening. The top of the drying bag is provided with exhaust holes with a pore diameter of 0.3 mm to 0.8 mm at intervals around the periphery of the wind guiding ring opening; The annular clamping portion is inserted into the cavity. The clamping portion and the annular clamping portion are clamped to assemble the drying bag and the drying machine together. The wind guiding ring opening is communicated with the hot air channel; The drying bag further includes elastic partitions and / or rotatable wind guiding vanes. The elastic partitions are fixedly arranged at intervals on the inner wall of the drying bag. The wind guiding vanes are installed in the inner wall of the drying bag through a rotating shaft rod. The wind flow is used to drive the wind guiding vanes to rotate automatically, so as to guide the distribution of hot air and separate the clothes.

5. The dryer according to claim 4, characterized in that: It further includes an electrostatic discharge device and a module box. The electrostatic discharge device includes a conductive copper sheet and a wire. The conductive copper sheet is arranged on the outer wall of the hot air channel and extends towards the direction of the wind guiding ring opening. The conductive copper sheet is connected to the grounding end of the control panel through the wire to form a grounding circuit; At the end of the drying stage, the control panel controls the conductive copper sheet to conduct with the grounding circuit, so that the static electricity on the surface of the clothes is released to the ground through the conductive copper sheet, reducing the charge of the clothes; A module box receiving cavity is formed on the inner side wall of the hot air channel. A fragrance module and / or an antibacterial module is installed in the module box. The module box is detachably arranged in the module box receiving cavity. The wind generated by the fan passes through the module box to generate a gas with fragrance and / or antibacterial molecules and is conveyed to the drying bag to improve the freshness and hygienic performance of the clothes after drying.

6. The dryer according to claim 4, wherein: It further includes a bottom cover, a magnetic metal sheet and a magnet sheet. The bottom cover is provided with an elastic sealing ring matching the shape of the edge of the housing. The bottom cover is rotatably arranged on the housing; The magnet sheet is arranged on the bottom cover, and the magnetic metal sheet is arranged at the bottom of the housing; When the bottom cover rotates to the side wall of the housing, the cavity on the housing is exposed for inserting and fixing the annular clamping portion of the drying bag, so that the drying bag is naturally vertical under the action of gravity; When the bottom cover rotates to the bottom of the housing, the magnet sheet and the magnetic metal sheet are adsorbed together, and the bottom cover is attached to the edge of the housing by magnetic force to close the storage cavity of the drying bag. The elastic sealing ring seals the gap between the bottom cover and the housing.

7. The dryer according to claim 1, characterized in that: The PTC ceramic heater is fixed to the inner wall of the hot air channel in an interference fit manner, and a protective grille made of high-temperature resistant material is provided at the outlet of the hot air channel; When the control panel activates the drying function, it causes an electric current to flow through the PTC ceramic block. The internal grains of the ceramic undergo a self-heating effect after being energized, causing the temperature to rise rapidly. The air flow generated by the fan passes through the small hot air channels of the PTC ceramic block, and the air is heated to form hot air, which is then transported to the drying bag through the hot air channel.

8. The dryer according to claim 1, characterized in that: The dryer further includes a temperature control protection module, and the temperature control protection module includes a thermistor and a bimetal temperature control switch; The thermistor is installed on the air inlet side surface of the PTC ceramic heater and is electrically connected to the control panel. It is used to monitor the surface temperature of the PTC ceramic heater in real time. When the detected temperature exceeds the preset threshold, it feeds back a temperature signal to the control panel, and the control panel adjusts the heating power or turns off the PTC ceramic heater accordingly; The bimetal temperature control switch is arranged on the air outlet side of the PTC ceramic heater and is connected in series with the PTC ceramic heater. When the temperature at this position rises to the set safety limit value, the bimetal undergoes mechanical deformation due to thermal expansion and automatically disconnects the electrical contact, realizing the physical power-off protection of the PTC ceramic heater; A wind flow equalizing plate made of flame-retardant and high-temperature resistant material is provided in the hot air channel between the PTC ceramic heater and the fan. The wind flow equalizing plate is provided with a plurality of uniformly arranged air guiding holes for guiding the air flow to uniformly enter the small hot air channels of the PTC ceramic block.

9. The dryer according to claim 8, characterized in that: The wind flow equalizing plate is a composite plate body made of a glass fiber reinforced polymer embedded with a silicon aluminum fiber mesh. The surface of the wind flow equalizing plate is etched with pore patterns with a pore diameter of 0.1 - 0.3 mm and a depth of 0.05 - 0.1 mm for optimizing the air flow fluidization and reducing the turbulent noise. And a thin film grade nano fluorosilane coating for hydrophobic and oleophobic functions is sprayed inside the pore patterns. The thin film grade nano fluorosilane coating is also overlaid with a titanium dioxide nano-particle photocatalytic coating for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate.

10. An intelligent drying control method using the dryer according to any one of claims 1-9, characterized in that: Including the following steps, Step 1: The user hangs the clothes on the clothes hanger device. The user activates the intelligent drying mode through the control panel, and the drying device, the force sensor, and the humidity sensor are activated. The drying device generates hot air that passes through the hot air channel and blows towards the drying bag to dry the clothes; Step 2: When the preset time is reached, the force sensor transmits the force condition at the preset time to the control panel. The control panel calculates the difference between the force at the last preset time and the force at the current preset time, thereby obtaining the weight change value of the clothes. At the same time, the control panel compares the weight change value with the preset change value; The humidity sensor transmits the humidity condition to the control panel, and the control panel records it as the humidity of the clothes. At the same time, the control panel compares the humidity of the clothes with the preset humidity; When the weight change value > the preset change value, execute Step 2; When the humidity of the clothes > the preset humidity, step two is executed; When the weight change value ≤ the preset change value and the humidity of the clothes ≤ the preset humidity are satisfied at the same time, the heating element of the drying device stops working, and at the same time, the fan of the drying device continues to work to generate cold air. The cold air blows through the hot air channel to the dry clothes bag to cool the clothes until the preset cooling time ends; Step four: After the preset cooling time ends, the dryer shuts down, and the drying device, the force sensor, and the humidity sensor are powered off.

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