Clothes dryer and intelligent clothes drying control method

Abstract

The present invention relates to the field of clothes drying, and 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 hanging rod device, a humidity sensor and a clothes drying bag. The shell is provided with a hot air channel connected to an inner cavity of the shell. 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 variable speed 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 is located in front of the air outlet of the fan. The inner wall of the hot air channel made of the nano-coating material with low thermal resistance and high temperature resistance can effectively reduce thermal resistance, improve the heat transfer efficiency of the hot air, make the hot air temperature more uniform, and output more stable, shorten the drying time and reduce energy consumption.

Description

Technical Field

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

[0002] Existing clothes drying equipment primarily includes tumble dryers, wall dryers, and portable dryers, and is widely used in both homes and businesses. Traditional tumble dryers use an electric heater or heat pump system to generate hot air, which is then tumbled and heated in a rotating drum, accelerating water evaporation. However, these devices are bulky, energy-intensive, and pose a risk of damage to fabrics that are prone to wrinkling, deformation, or heat instability.

[0003] In recent years, hanging clothes dryers have become increasingly popular as a relatively lightweight solution. These devices typically include a hanging structure and a hot air generator to dry clothes by hanging them. However, existing hanging clothes dryers still have the following shortcomings:

[0004] Most of them use a single hot air heating method and lack diversified heat source matching, resulting in limited drying efficiency.

[0005] Traditional hanging drying equipment usually does not have the functions of sensing clothing load and dynamic humidity detection, and cannot achieve precise control, which makes it easy for over-drying or incomplete drying to occur.

[0006] The hot air channel has a simple structure, the duct material has high thermal resistance, and the heat transfer efficiency is low, resulting in increased energy consumption. Summary of the Invention

[0007] The first object of the present invention is to provide a clothes dryer with multiple heating modules, high thermal efficiency, and dynamic sensing and intelligent control capabilities.

[0008] The second object of the present invention is to provide an intelligent clothes drying control method with multiple heating modules, high thermal efficiency, dynamic perception and intelligent control capabilities.

[0009] The first object of the present invention is achieved in this way:

[0010] 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 defines a hot air duct communicating with an inner cavity of the housing. The inner wall of the hot air duct is coated with a nano-coating material having low thermal resistance and high temperature resistance. The drying device includes a variable-speed blower, a PTC ceramic heater, and an infrared heating module. The blower is disposed within the hot air duct, and the PTC ceramic heater is disposed within the hot air duct and in front of the blower's air outlet.

[0011] The PTC ceramic heater includes a frame made of heat-resistant material and a plurality of PTC ceramic blocks made of positive temperature coefficient material. Each PTC ceramic block is provided with four through-going hot air channels for hot air circulation.

[0012] The surface of each PTC ceramic block is coated with a high-temperature resistant insulating coating to prevent short circuits and electrical failures. Multiple PTC ceramic blocks are arranged side by side in the frame along the air circulation direction, and adjacent PTC ceramic blocks are connected by a conductive structure. The multiple PTC ceramic blocks are connected to the control panel in series or parallel.

[0013] The hook device is movably connected to the housing and is used to hang the clothes dryer;

[0014] The clothes hanging rod device is movably connected to the housing, and the clothes hanging rod device is located at the outlet of the hot air channel;

[0015] The clothes drying bag is detachably or fixedly mounted on the housing, and the hot air passage is connected to the clothes drying bag;

[0016] The infrared heating module is arranged in the inner cavity of the shell and faces the drying bag, forming an upper direct heating structure;

[0017] The force sensor is disposed in the housing, the force sensor, the fan, and the infrared heating module are electrically connected to the control panel respectively, the hook device or the clothes hanging rod device contacts the force sensor, and the force applied to the hook device or the clothes hanging rod device is transmitted to the control panel via the force sensor;

[0018] The humidity sensor is arranged on the housing and / or the drying bag, and the humidity sensor is electrically connected to the control panel.

[0019] The inner wall of the hot air channel is made of low thermal resistance and high temperature resistant nano-coating material, which can effectively reduce thermal resistance, improve the heat transfer efficiency of hot air, make the hot air temperature more uniform and the output more stable, shorten the drying time and reduce energy consumption.

[0020] By organically combining a fan 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 material and humidity of the clothes, achieving both rapid preheating and deep drying. It can not only protect fabrics that are prone to wrinkles and deformation, but also meet the efficient drying needs of heavy clothes.

[0021] The surface of the PTC ceramic block is coated with a high-temperature resistant insulating coating, and adjacent ceramic blocks are connected in series and parallel through a conductive structure, enhancing the electrical safety and reliability of the heating component; the force sensor is linked to the hook / clothes hanger to detect load changes in real time and feedback to the control panel, thereby automatically adjusting the drying power and time to avoid over-baking or uneven drying.

[0022] The drying bag can be detachable or fixed, and is equipped with an infrared heating module facing the drying bag, so that hot air and infrared radiation can reach the surface of the clothes directly. Combined with the humidity sensor to dynamically monitor the ambient moisture, the overall system forms an intelligent closed-loop control, combining portability, energy saving and refined drying effect.

[0023] The first object of the present invention can also be solved by the following technical measures:

[0024] Furthermore, a notch is formed on the top of the housing, the hook device comprises a hook, a rotating shaft and a base, a side wall of the base is formed with a notch, the base is fixed in the housing and is located at the bottom of the notch, and the notch and the inner wall of the housing form an axis hole;

[0025] The tail of the hook passes through the slot 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, so that the hook and the housing are rotatably connected, and the hook rotates into or out of the slot;

[0026] The force sensor is arranged in the shaft hole and located above the rotating shaft, and the force applied to the hook is transmitted to the force sensor.

[0027] The hook structure uses an axial hole surrounded by a top notch and a base gap to cooperate with a rotating shaft to achieve a rotating connection. The structure is compact and easy to install, and no additional bracket is required. It realizes a reliable integrated design of the hook and the shell, and improves the structural stability and aesthetics of the entire machine.

[0028] The tail of the hook passes directly through the slot and is locked by the shaft, so that the torque generated by the hook when bearing weight is transmitted to the base through the shaft, avoiding the risk of loosening or falling off, and improving the safety and reliability when hanging clothes.

[0029] Placing the force sensor in the shaft hole and above the rotating shaft can accurately measure the force on the hook and realize real-time collection and feedback of the hook force data; 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 clothing protection effect.

[0030] Furthermore, the clothes hanging rod device includes a clothes hanging rod, a bolt and a base body, the housing is provided with a lower receiving groove, the force sensor is placed in the lower receiving groove, the base body is placed at the bottom of the lower receiving groove, and the bolt passes through the force sensor and the lower receiving groove to connect to the base body;

[0031] The ends of the clothes hanging rod are respectively connected to the corresponding base bodies, so that the clothes hanging rod is arranged in a rotatable manner at the hot air channel, and the force applied to the clothes hanging rod is transmitted to the force sensor.

[0032] This structure provides a receiving groove at the lower part of the shell, places the base and the force sensor in the groove, and then connects them with bolts. The structure is compact and integrated, and reliable installation of the clothes hanging rod can be achieved without additional support parts, which simplifies the manufacturing and maintenance process and improves the overall integration and aesthetics of the system.

[0033] The end of the clothes hanging rod is matched with the base in a rotating connection, so that the clothes hanging rod can rotate freely in the hot air channel. It is convenient for users to flexibly adjust the hanging angle according to the number and size of clothes, and ensure the best hot air coverage in the air duct, thereby improving the uniformity and efficiency of drying clothes.

[0034] The force sensor is placed directly in the lower receiving groove and fastened to the base with bolts. This ensures that the force on the clothes hanging rod is reliably transmitted to the sensor through the base and bolts, eliminating force loss and errors in the intermediate links, improving the accuracy and stability of weight detection, and ensuring that the system can accurately sense changes in the wet weight of clothes.

[0035] 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 savings while ensuring the drying effect.

[0036] Furthermore, the shell includes an outer shell and an inner shell, the inner shell is an inner shell with an open bottom, the inner shell is provided with a groove cavity for clamping the dry clothes bag, the groove cavity is provided with a clamping portion at intervals, the inner shell is provided with the hot air channel running through from top to bottom, 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, and the humidity sensor is provided in the upper receiving groove;

[0037] The inner shell is fixed to the inner cavity of the outer shell, and an air passage is formed between the outer shell and the inner shell. The air passage is connected to the hot air passage. The outer shell is provided with an air inlet connected to the ventilation passage. The area between the bottom opening of the inner shell and the outlet of the hot air passage forms a dry bag storage chamber for storing dry clothes bags. The side wall of the outer shell is provided with the control panel.

[0038] The drying bag comprises an outer metal coating, an inner anti-stick polymer coating, and an intermediate thermal insulation layer. The intermediate thermal insulation layer is a moisture-permeable and water-impermeable membrane that allows water vapor to escape and prevents hot steam from accumulating within the bag. The top of the drying bag is provided with an air guide ring for airtight connection with the hot air passage of the shell. The top of the drying bag is located outside the air guide ring to form an annular clamping portion. The top of the drying bag is located outside the air guide ring to form exhaust holes with a diameter of 0.3 mm to 0.8 mm.

[0039] The annular clamping portion is inserted into the groove cavity, and the clamping portion and the annular clamping portion are clamped together to realize the assembly of the drying bag and the dryer, and the air guide ring is connected to the hot air channel;

[0040] The drying bag further comprises elastic spacers and / or rotatable air guide blades. The elastic spacers are fixed at intervals to the inner wall of the drying bag, and the air guide blades are installed in the inner wall of the drying bag via a rotating shaft. The air flow is used to drive the air guide blades to rotate automatically, thereby guiding the hot air distribution and separating the clothes.

[0041] This structure achieves rapid assembly and disassembly of the drying bag and an airtight connection by double fitting of the outer shell and the inner shell with an opening at the bottom, and by utilizing the clamping portion in the groove cavity of the inner shell to cooperate with the annular clamping portion of the drying bag. This not only simplifies the assembly and disassembly process, but also ensures a tight fit between the hot air channel and the drying bag, thus preventing hot air leakage and improving the overall heating efficiency.

[0042] The drying 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 discharging water vapor, preventing steam retention, reducing condensation and bacterial growth, thereby improving the drying quality and hygiene safety of clothes.

[0043] 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.

[0044] The humidity sensor in the upper holding tank can monitor the humidity changes in the drying 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.

[0045] The elastic spacers 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.

[0046] 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 ground terminal of the control panel through the wire to form a ground circuit;

[0047] 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.

[0048] A module box accommodating cavity is formed on the inner side 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 air 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.

[0049] The electrostatic discharge device arranges a conductive copper sheet on the outer wall of the hot air channel and grounds it. It can actively release static electricity on the surface of clothes to the ground at the end of drying, effectively reducing the charge on the clothes, reducing the risk of electrostatic breakdown and dust absorption when wearing, and improving safety and wearing comfort.

[0050] The static discharge function is integrated into the intelligent control panel, eliminating static electricity without additional operation. It is seamlessly integrated with the drying process, does not extend the overall drying time, and does not increase the complexity of the equipment, maintaining the simplicity of operation and high reliability of the system.

[0051] The module box contains a removable fragrance module and / or antibacterial module. The hot air generated by the fan automatically carries the fragrance or antibacterial molecules when passing through the module and is directly delivered to the drying bag. This not only makes the clothes more refreshing after drying, but also inhibits the growth of bacteria, thereby improving the hygiene performance of the clothes and user experience.

[0052] The detachable module design allows users to freely replace and maintain it according to their needs. Different fragrances or antibacterial agents can be matched as needed to achieve personalized drying. The module box is closely integrated with the hot air channel design without affecting the hot air flow and temperature distribution, taking into account both functional scalability and drying efficiency.

[0053] Furthermore, 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;

[0054] The magnet sheet is arranged on the bottom cover, and the magnetic metal sheet is arranged on the bottom of the shell;

[0055] When the bottom cover is rotated to the side wall of the shell, the groove cavity on the shell is exposed, which is used to insert and fix the annular clamping portion of the drying bag, so that the drying bag is naturally vertical under the action of gravity;

[0056] When the bottom cover rotates to the bottom of the shell, the magnet sheet and the magnetic metal sheet are attracted together, and the bottom cover is attached to the edge of the shell by magnetic force to close the dry clothes bag storage cavity, and the elastic sealing ring closes the gap between the bottom cover and the shell.

[0057] The bottom cover and the shell are connected by an elastic sealing ring and magnetic adsorption to achieve quick and tool-free opening and closing operations. Users only need to rotate the bottom cover to complete the disassembly, assembly and sealing of the dry clothes bag. The operation is simple and convenient. At the same time, the sealing ring and magnetic adsorption work together to effectively block the leakage of hot air and water vapor, ensuring the efficiency of hot air circulation and preventing water vapor from overflowing.

[0058] When the bottom cover is exposed from the groove cavity, the annular clip of the drying bag can be easily inserted, so that the drying bag is naturally vertical and firmly fixed under the action of gravity, avoiding the displacement of the drying bag due to wind or shaking during the drying process, and enhancing the heating uniformity and drying effect of the clothes.

[0059] After the bottom cover rotates to the bottom of the shell, the magnet sheet is adsorbed to the magnetic metal sheet at the bottom of the shell to form a tightly closed structure. Combined with the elastic sealing ring, it not only improves the airtightness of the entire machine, but also effectively isolates the storage cavity before and after drying, preventing odor from leaking out and keeping the interior of the cabinet clean.

[0060] Furthermore, 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;

[0061] When the control panel starts the drying function, current flows through the PTC ceramic block. After power is turned on, the crystal grains inside the ceramic undergo a self-heating effect, causing the temperature to rise rapidly. The airflow generated by the fan passes through the small hot air channel of the PTC ceramic block. The air is heated to form hot air, which is transported to the drying bag through the hot air channel.

[0062] By fixing the PTC ceramic heater to the inner wall of the hot air channel with an interference fit, a firm fit between the PTC ceramic heater and the hot air channel is ensured, thermal resistance and vibration loss are reduced, and heat is more efficiently transferred to the airflow.

[0063] A high-temperature resistant protective grille is installed at the outlet of the hot air channel, which can not only effectively prevent debris or hands from accidentally contacting the heating element, thereby improving the safety of use, but also maintain unobstructed ventilation and avoid obstruction of hot air output, thereby maintaining stable drying performance.

[0064] The control panel intelligently regulates the current flowing into the PTC ceramic block, utilizing the PTC self-heating effect to achieve rapid temperature rise, and cooperates with the variable-speed fan to deliver hot air through a small channel, allowing the system to reach the preset temperature in a short time, shortening the preheating and drying cycle, and improving drying efficiency and user experience.

[0065] Furthermore, the clothes dryer further comprises a temperature control protection module, which comprises a thermistor and a bimetallic temperature control switch;

[0066] 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 a preset threshold, the temperature signal is fed back to the control panel. The control panel adjusts the heating power or turns off the PTC ceramic heater accordingly.

[0067] The bimetallic temperature control switch is arranged on the air outlet side of the PTC ceramic heater and is electrically connected in series with the PTC ceramic heater. When the temperature at this location rises to a set safety limit value, the bimetallic strip undergoes mechanical deformation due to thermal expansion and automatically disconnects the electrical contact, thus achieving physical power-off protection for the PTC ceramic heater.

[0068] The hot air channel between the PTC ceramic heater and the fan is provided with an air flow equalizing plate made of flame retardant and high temperature resistant material. The air flow equalizing plate is provided with multiple evenly arranged air guide holes for guiding the air flow evenly into the hot air small channel of the PTC ceramic block.

[0069] The thermistor installed on the air inlet side of the PTC can monitor the surface temperature of the heater in real time, feedback accurate data to the control panel, and automatically adjust the heating power or cut off the power supply according to the threshold to prevent thermal degradation or safety hazards caused by overheating.

[0070] Connecting a bimetallic temperature control switch in series on the air outlet side can quickly cut off the circuit through mechanical deformation when the temperature exceeds the limit, thereby achieving physical power-off protection for the PTC ceramic heater, providing the system with a second level of over-temperature protection, and greatly improving the reliability and safety of the equipment.

[0071] Adding a flame-retardant and high-temperature resistant airflow balancing plate between the heater and the fan and evenly arranging the air guide holes can optimize airflow distribution, reduce local turbulence and noise, and ensure consistent airflow in each PTC small channel, thereby improving the uniformity and comfort of drying clothes.

[0072] Furthermore, the wind flow equalizing plate is a composite material plate made of glass fiber reinforced polymer with embedded aluminum silicate fiber mesh. The surface of the wind flow equalizing plate is etched with holes with a pore size of 0.1-0.3 mm and a depth of 0.05-0.1 mm for optimizing air flow laminarization and reducing turbulent noise, and a layer of thin-film nano-fluorosilane coating with hydrophobic and oleophobic functions is sprayed inside the holes. The thin-film nano-fluorosilane coating is also superimposed with a layer of titanium dioxide nanoparticle photocatalytic coating for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate.

[0073] The glass fiber reinforced polymer composite air flow equalizing board with embedded aluminum silicate fiber mesh has high strength, high temperature resistance and excellent thermal insulation performance. It can withstand long-term high-temperature airflow without deformation or aging.

[0074] The microporous texture etched on the plate surface (pore diameter 0.1–0.3 mm, depth 0.05–0.1 mm) helps to stratify the airflow and reduce turbulent noise, making the drying process quieter and more comfortable, while also enhancing the uniformity of hot air distribution through fine air guidance.

[0075] Nano-fluorosilane hydrophobic and oleophobic coating is sprayed inside the micropores to make the surface of the airflow equalizing plate self-cleaning and not prone to accumulation of oil or water mist. Combined with the titanium dioxide photocatalytic antibacterial coating, it achieves long-term antibacterial and self-cleaning function, effectively inhibits bacterial growth, keeps the airway clean, and improves drying hygiene performance and maintenance convenience.

[0076] The second object of the present invention is achieved in this way:

[0077] An intelligent clothes drying control method comprises the following steps:

[0078] Step 1: The user hangs the clothes on the clothes hanging rod device, and the user activates the intelligent drying mode through the control panel. The drying device, force sensor and humidity sensor are activated, and the drying device generates hot air that is blown through the hot air channel to the drying bag to dry the clothes;

[0079] Step 2: When the preset time is reached, the force sensor transmits the force conditions of 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 clothing. At the same time, the control panel compares the weight change value with the preset change value;

[0080] The humidity sensor transmits the humidity condition to the control panel, which 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;

[0081] Step 3: When the weight change value is greater than the preset change value, execute step 2;

[0082] When the clothes humidity is greater than the preset humidity, go to step 2;

[0083] 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 stops working, while the fan of the drying device continues to work to generate cold air. The cold air is blown to the drying bag through the hot air channel to cool the clothes until the preset cooling time ends.

[0084] Step 4: After the preset cooling time is over, the dryer is turned off, and the drying device, force sensor, and humidity sensor are powered off.

[0085] Through the coordinated detection of force sensors and humidity sensors, this method can monitor the changes in clothing weight and moisture content in real time, form an intelligent closed-loop control, accurately judge the drying status of clothing, and avoid energy waste and clothing damage caused by over-drying.

[0086] The heating and cooling stages are dynamically adjusted according to preset thresholds. It automatically switches to cold air cooling when the humidity and weight meet the requirements. In addition, continuous feedback and iterative detection are carried out during the drying process to ensure that the drying process is both efficient and gentle, taking into account both drying effect and clothing protection.

[0087] After the heating is finished, it automatically enters the cold air mode, which can quickly reduce the surface temperature of the clothes, reduce the thermal stress and wrinkle formation on the fabric caused by high temperature, and improve the wearing experience; after the cooling is completed, the power is automatically cut off to achieve unattended operation throughout the process, which greatly improves user convenience and safety.

[0088] The second object of the present invention can also be solved by the following technical measures:

[0089] 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.

[0090] With a detection cycle of 10 minutes, it can capture subtle changes in the evaporation of moisture in clothes in a timely manner while ensuring sufficient drying time, which not only improves the drying efficiency but also prevents temperature fluctuations caused by frequent switching.

[0091] The 1g weight change threshold and 10%RH humidity threshold settings can respond sensitively to the moisture content of different fabrics, ensuring that any light or heavy clothing can be accurately sensed and dried precisely.

[0092] The short cooling time of 15 seconds can not only quickly balance the temperature of clothes and reduce thermal stress, but also save system resources, taking into account the dual needs of protecting fabrics and saving energy and reducing consumption.

[0093] Furthermore, it also includes a buzzer and a network module, which are arranged in the shell and are electrically connected to the control panel respectively. After the dryer reaches the preset cooling time, the control panel starts the buzzer, and the buzzer emits a prompt sound. At the same time, the control panel starts the network module, and the network sends a drying end information to the user's mobile phone.

[0094] The buzzer's prompt sound can intuitively inform users to remove clothes at the end of the cooling stage, avoiding the embarrassment of getting clothes wet again or forgetting to take them out due to ignoring the signal;

[0095] The network module remotely pushes drying completion notifications, allowing users to promptly learn about the drying status of clothes no matter where they are, further enhancing the smart home experience and convenience of life;

[0096] This function requires no additional operation and is automatically triggered by the control panel, achieving a seamless connection between the drying process and user reminders, enhancing the product's interactivity and humanized design.

[0097] The beneficial effects of the present invention are as follows:

[0098] The present invention combines the hot air channel with low thermal resistance nano-coating, PTC self-heating and infrared direct heating module, which can quickly heat up and evenly distribute the hot air, greatly shortening the preheating and drying time while reducing energy consumption.

[0099] 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 threshold value to avoid over-drying or under-drying and achieve a precise and gentle drying effect.

[0100] The present invention completely eliminates hidden dangers such as overheating, electrical short circuit, and static electricity accumulation through interference-fit fixed PTC ceramic heater, thermistor and bimetallic temperature control switch, two over-temperature protection, protective grid and electrostatic release device, and ensures safe use.

[0101] The present invention has a detachable fragrance / antibacterial module, a moisture-permeable and water-tight structure of the dry bag, automatic cold air cooling, buzzer and network reminder functions, etc., which meet the user's diverse needs for freshness, hygiene, portability and intelligence, and comprehensively improve the convenience and experience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] Figure 1 Schematic diagram of the clothes dryer of Example 1.

[0103] Figure 2 This is an exploded view of the clothes dryer of Example 1.

[0104] Figure 3 Schematic diagram of the combination of a clothes dryer and a clothes drying bag according to Example 1.

[0105] Figure 4 for Figure 3 A partial cross-sectional view of .

[0106] Figure 5 for Figure 3 sectional view of .

[0107] Figure 6 This is the intelligent clothes drying control method of the clothes dryer of Example 1.

[0108] Figure 7 Schematic diagram of the hot air channel of the clothes dryer in Example 1.

[0109] Figure 8 Schematic diagram of the PTC ceramic heater of Example 1.

[0110] Figure 9 Schematic diagram of the PTC ceramic block of Example 1.

[0111] Figure 10Schematic diagram of the wind flow equalizing plate of Example 1.

[0112] Figure 11 This is a cross-sectional view of the wind flow equalizing plate of Example 1.

[0113] Figure 12 This is a schematic diagram of the clothes dryer of Example 1.

[0114] Figure 13 This is a cross-sectional view of the dryer and dryer bag combination of Example 2.

[0115] Figure 14 This is an exploded view of the clothes dryer of Example 2 (excluding the outer shell).

[0116] Figure 15 This is a cross-sectional view of the dryer and dryer bag combination of Example 2.

[0117] Figure 16 This is a cross-sectional view of the combination of a clothes dryer and a clothes drying bag according to Example 2 (humidity sensors are provided on both the housing and the clothes drying bag). DETAILED DESCRIPTION

[0118] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0119] Example 1, combined Figures 1 to 12 As shown, 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 defines a hot air passage 21 communicating with the inner cavity of the housing 2. The inner wall of the hot air passage 21 is coated with a nano-coating material with low thermal resistance and high temperature resistance. The drying device 3 includes a fan 31 with a variable speed function, a PTC ceramic heater 32, and an infrared heating module 33. The fan 31 is disposed within the hot air passage 21. The PTC ceramic heater 32 is disposed within the hot air passage 21 and is located in front of the air outlet of the fan 31.

[0120] The PTC ceramic heater 32 includes a frame 321 made of heat-resistant material and a plurality of PTC ceramic blocks 322 made of positive temperature coefficient material. Each PTC ceramic block 322 is provided with four through-going hot air channels 3221 for hot air circulation.

[0121] The surface of each PTC ceramic block 322 is coated with a high-temperature resistant insulating coating to prevent short circuits and electrical failures. The multiple PTC ceramic blocks 322 are arranged in parallel along the air flow direction within the frame 321. Adjacent PTC ceramic blocks 322 are connected by a conductive structure. The multiple PTC ceramic blocks 322 are connected to the control panel 5 in series or parallel.

[0122] The hook device 1 is movably connected to the housing 2 and is used to hang the clothes dryer;

[0123] 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;

[0124] The clothes drying bag 8 is detachably or fixedly mounted on the housing 2 , and the hot air passage 21 is in communication with the clothes drying bag 8 ;

[0125] The infrared heating module 33 is disposed in the inner cavity of the housing 2 and faces the drying bag 8, forming an upper direct heating structure;

[0126] The force sensor 4 is disposed in the housing 2. The force sensor 4, the fan 31, and the infrared heating module 33 are electrically connected to the control panel 5. The hook device 1 contacts the force sensor 4. The force applied to the hook device 1 or the clothes hanger device 6 is transmitted to the control panel 5 via the force sensor 4.

[0127] The humidity sensor 7 is disposed on the housing 2 , and the humidity sensor 7 is electrically connected to the control panel 5 .

[0128] Furthermore, a notch 22 is formed on the top of the housing 2, and the hook device 1 includes a hook 11, a rotating shaft 12, and a base 13. A notch 131 is formed 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 form an axis hole 132.

[0129] The tail of the hook 11 passes through the slot 22 and is placed in the base 13. The shaft 12 passes through the tail of the hook 11, and the end of the shaft 12 extends into the corresponding shaft hole 132, so that the hook 11 and the housing 2 are rotatably connected. The hook 11 rotates into or out of the slot 22.

[0130] The force sensor 4 is disposed in the shaft hole 132 and located above the rotating shaft 12 , and the force applied to the hook 11 is transmitted to the force sensor 4 .

[0131] Furthermore, the clothes hanging rod device 6 includes a clothes hanging rod 61, a bolt 62 and a base 63. The housing 2 is provided with a lower receiving groove 23. The base 63 is placed at the bottom of the lower receiving groove 23. The bolt 62 passes through the lower receiving groove 23 and connects to the base 63.

[0132] The ends of the clothes hanging rod 61 are respectively connected to the corresponding base bodies 63, so that the clothes hanging rod 61 is rotatably arranged at the hot air channel 21.

[0133] Furthermore, 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 dry clothes bag 8. The groove cavity 251 is provided with a clamping portion 2511 at intervals. The inner shell 25 is provided with the hot air channel 21 and the lower receiving groove 23 that pass through from top to bottom. The top of the inner shell 25 is provided with an upper receiving groove 252. The bottom of the upper receiving groove 252 is provided with an air hole 2521 that communicates with the upper receiving groove 252. The humidity sensor 7 is disposed in the upper receiving groove 252.

[0134] The inner shell 25 is fixed to the inner cavity of the outer shell 24. An air passage 26 is formed between the outer shell 24 and the inner shell 25. The air passage 26 is connected to the hot air passage 21. The outer shell 24 has an air inlet 241 connected to the ventilation passage 26. The area between the bottom opening of the inner shell 25 and the outlet of the hot air passage 21 forms a dry bag storage chamber 80 for storing a dry bag 8. The side wall of the outer shell 24 is provided with the control panel 5.

[0135] The drying bag 8 includes an outer metal coating 81, an inner anti-sticking polymer coating 82, and an intermediate thermal insulation layer 83. The intermediate thermal insulation layer 83 is a moisture-permeable and water-impermeable membrane that allows water vapor to escape and prevents hot steam from accumulating within the bag. The top of the drying bag 8 is provided with an air guide ring 84 for airtight connection with the hot air passage 21 of the housing 2. An annular clamping portion 841 is formed at the top of the drying bag 8, located outside the air guide ring 84. Exhaust holes 842 with a diameter of 0.3 mm to 0.8 mm are spaced apart at the top of the drying bag 8, located outside the air guide ring 84.

[0136] The annular clamping portion 841 is inserted into the groove cavity 251, and the clamping portion 2511 and the annular clamping portion 841 are clamped together to realize the assembly of the drying bag 8 and the dryer. The air guide ring 84 is connected to the hot air channel 21;

[0137] The drying bag 8 further includes elastic spacers 85 and rotatable air guide blades 86. The elastic spacers 85 are fixed at intervals to the inner wall of the drying bag 8. The air guide blades 86 are installed in the inner wall of the drying bag 8 via a rotating shaft. The air guide blades 86 are automatically rotated by the wind flow, thereby guiding the hot air distribution and separating the clothes.

[0138] Furthermore, it also includes an electrostatic discharge device and a module box 10. 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 toward the air guide ring opening 84. The conductive copper sheet 9 is connected to the ground terminal of the control panel 5 through the wire to form a ground circuit.

[0139] At the end of the drying stage, the control panel 5 controls the conductive copper sheet 9 to be connected to the ground circuit, so that static electricity on the surface of the clothes is released to the ground through the conductive copper sheet 9, thereby reducing the charge on the clothes.

[0140] The inner wall of the hot air channel 21 is provided with a module box accommodating cavity 211, and the module box 10 is installed with a fragrance module and an antibacterial module. The module box 10 is detachably arranged in the module box accommodating cavity 211. The air generated by the fan 31 passes through the module box 10 to generate a gas with fragrance and antibacterial molecules and is transported to the drying bag 8 to improve the freshness and hygiene of the clothes after drying.

[0141] Furthermore, it also includes a bottom cover 91, a magnetic metal sheet and a magnet sheet. 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.

[0142] The magnet sheet is arranged on the bottom cover 91, and the magnetic metal sheet is arranged on the bottom of the housing 2;

[0143] When the bottom cover 91 rotates to the side wall of the housing 2, the groove 251 on the housing 2 is exposed, which is used to insert and fix the annular clamping portion 841 of the drying bag 8, so that the drying bag 8 is naturally vertical under the action of gravity;

[0144] When the bottom cover 91 rotates to the bottom of the housing 2 , the magnet sheet and the magnetic metal sheet are attracted together, and the bottom cover 91 adheres to the edge of the housing 2 through magnetic force to close the dry clothes bag storage cavity 80 , and the elastic sealing ring 911 closes the gap between the bottom cover 91 and the housing 2 .

[0145] Furthermore, the PTC ceramic heater 32 is fixed to the inner wall of the hot air channel 21 in an interference fit manner, and a protective grille 212 made of high temperature resistant material is provided at the outlet of the hot air channel 21;

[0146] When the control panel 5 activates the drying function, current flows through the PTC ceramic block 322 . The crystal grains inside the ceramic block 322 undergo self-heating after power is applied, causing the temperature to rise rapidly. The airflow generated by the fan 31 passes through the small hot air passage 3221 of the PTC ceramic block 322 . The heated air is then transported to the drying bag 8 via the hot air passage 21 .

[0147] Furthermore, the clothes dryer further comprises a temperature control protection module, which comprises a thermistor 100 and a bimetallic temperature control switch 200;

[0148] The thermistor 100 is mounted on the air inlet side surface of the PTC ceramic heater 32 and is electrically connected to the control panel 5 for real-time monitoring of the surface temperature of the PTC ceramic heater 32. When the detected temperature exceeds a preset threshold, a temperature signal is fed back to the control panel 5, which then adjusts the heating power or shuts down the PTC ceramic heater 32 accordingly.

[0149] The bimetallic temperature control switch 200 is arranged on the air outlet side of the PTC ceramic heater 32 and is electrically connected in series with the PTC ceramic heater 32. When the temperature at this location rises to a set safety limit, the bimetallic strip undergoes mechanical deformation due to thermal expansion and automatically disconnects the electrical contact, thus achieving physical power-off protection for the PTC ceramic heater 32.

[0150] The hot air channel 21 between the PTC ceramic heater 32 and the fan 31 is provided with an air flow equalizing plate 30 made of flame retardant and high temperature resistant material. The air flow equalizing plate 30 is provided with a plurality of evenly arranged air guide holes 301 for guiding the air flow evenly into the hot air channel 3221 of the PTC ceramic block 322.

[0151] Furthermore, the wind flow equalizing plate 30 is a composite material plate made of glass fiber reinforced polymer 303 with embedded aluminum silicate fiber mesh 302. The surface of the wind flow equalizing plate 30 is etched with holes 304 with a pore size of 0.1-0.3 mm and a depth of 0.05-0.1 mm for optimizing air flow laminarization and reducing turbulent noise, and a layer of thin-film nano-fluorosilane coating 305 for hydrophobic and oleophobic functions is sprayed inside the holes 304. The thin-film nano-fluorosilane coating 305 is also superimposed with a layer of titanium dioxide nano-particle photocatalytic coating 306 for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate 30.

[0152] An intelligent clothes drying control method comprises the following steps:

[0153] Step 1: The user hangs the clothes on the clothes hanging rod 6 and activates the intelligent drying mode through the control panel 5. The drying device 3, the force sensor 4, and the humidity sensor 7 are activated. The drying device 3 generates hot air that is blown through the hot air channel 21 to the drying bag 8 for drying the clothes.

[0154] Step 2: When the preset time arrives, the force sensor 4 transmits the force conditions at the preset time to the control panel 5. The control panel 5 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 clothing. At the same time, the control panel 5 compares the weight change value with the preset change value.

[0155] The humidity sensor 7 transmits the humidity condition to the control panel 5, which records it as the humidity of the clothes. At the same time, the control panel 5 compares the humidity of the clothes with the preset humidity;

[0156] Step 3: When the weight change value is greater than the preset change value, execute step 2;

[0157] When the clothes humidity is greater than the preset humidity, go to step 2;

[0158] 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, while the fan 31 of the drying device 3 continues to work to generate cold air. The cold air is blown to the drying bag 8 through the hot air channel 21 to cool the clothes until the preset cooling time ends.

[0159] 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.

[0160] 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.

[0161] Furthermore, it also includes a buzzer 300 and a network module 400, which are arranged in the shell 2. 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.

[0162] The drying process of the clothes dryer: After the user hangs the clothes on the clothes hanging rod 61, the control panel 5 activates the intelligent drying mode. The system immediately drives the variable-speed fan 31, PTC ceramic heater 32, and 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-coated channel to preheat the clothes and accelerate water evaporation. At the same time, the force sensor 4 and humidity sensor 7 respectively regularly detect the change in the weight of the clothes and the humidity in the bag, and transmit the data back to the control panel 5 for comparison with preset thresholds. If the weight or humidity is still high, heating is maintained and cyclic monitoring is carried out until the weight change value is ≤ the preset change value and the clothing humidity is ≤ the preset humidity. When both meet, the system cuts off the heating element and only allows the fan 31 to send out cold air for short-term cooling. After cooling is completed, the power is automatically turned off and the buzzer 300 prompts and the network module 400 pushes a notification, completing the unmanned, efficient, accurate, and safe drying process.

[0163] Operating Principle of the PTC Ceramic Heater 32: PTC (Positive Temperature Coefficient) ceramic heaters utilize the rapid increase in material resistance as temperature rises. When an external voltage causes current to flow through the conductive phase within the ceramic block, Joule heating is generated between the ceramic particles, causing the temperature to rise rapidly. As the temperature approaches the material's Curie point, the resistance increases dramatically, and the current is automatically limited, achieving a "self-limiting" temperature effect, maintaining a stable temperature without the need for complex temperature control circuitry. The four small, interconnecting channels not only increase the surface area but also provide a good airflow path for the fan 31, allowing the heated air to be quickly and evenly distributed within the dry bag 8. This ensures rapid heating while preventing localized overheating.

[0164] Working Principle of Infrared Heating Module 33: Infrared heating module 33 uses a resistance wire or infrared ceramic plate to emit infrared radiation in the wavelength range of 0.75–5 μm, primarily in the far-infrared range, which is efficiently absorbed by the fabric surface and water molecules. It does not rely on convection heating, but instead directly transfers energy to the surface of the garment and the water molecules within it in the form of electromagnetic waves, causing the water molecules to vibrate and rapidly vaporize. Direct infrared radiation directly illuminates the upper layer of clothing after it passes through the drying bag 8, rapidly raising the surface temperature and accelerating moisture release. This complements the hot air heating, achieving more even and thorough drying of fabrics while reducing wrinkles and heat damage that can occur with air drying.

[0165] The synergistic advantages of the two: Combining the efficient and stable convection of the PTC ceramic heater 32 with the direct radiant heating of the infrared module not only quickly increases the chamber temperature to the set value, but also ensures both fabric shape protection and deep drying requirements. The fan 31 combines the hot air heated by the PTC heater with the infrared radiation to apply to the clothes, creating a superposition of two heating modes: "external heat penetration" and "hot air coverage." This improves drying efficiency while minimizing thermal stress and fabric damage.

[0166] How to obtain the weight of clothes: When clothes are hung on the clothes hanging rod 61 of the dryer, the weight of the clothes will be transmitted to the rotating shaft 12 at the bottom through the hook 11, and then the rotating shaft 12 will transmit this force to the internal force sensor 4. The force sensor 4 can feel the pressure on the hook 11 and convert this pressure into an electrical signal and transmit it to the control panel 5. The control panel 5 will process the signal, remove the interference of the weight of the hook 11 itself, and then convert it into the actual weight of the clothes. In this way, the dryer can adjust the drying process according to the weight of the clothes and realize intelligent control.

[0167] How to determine clothing humidity: During the drying process, moisture evaporates from the clothes, and humidity sensor 7 detects the humidity in this air. The wetter the clothes, the higher the water vapor content in the air, and the higher the value read by humidity sensor 7. Conversely, as the clothes dry, the water vapor content in the air decreases, and the humidity value measured by the sensor also decreases.

[0168] The dryer continuously monitors the humidity value and combines it with the set target humidity (e.g., 10% RH) to determine whether the clothes are dry, and then automatically controls the heating and the opening or closing of the fan 31 to automatically stop heating, save energy, and prevent over-drying.

[0169] An embodiment of the intelligent clothes drying control method with specific values: the user hangs about 800 g of clothes on the clothes hanging rod 61 and starts the "intelligent drying" mode.

[0170] The control panel 5 simultaneously activates the fan 31 (initial speed 1500 rpm), the PTC ceramic heater and the infrared heating module 33 to stabilize the hot air temperature at 60°C.

[0171] First test (t = 10 min): Force sensor 4 measures the current payload weight as 620 g (a decrease of 180 g from the initial value).

[0172] The relative humidity in the drying bag 8 measured by the humidity sensor 7 is 42% RH.

[0173] Since the weight change of 180 g > 1 g and the humidity of 42 %RH > 10 %RH did not meet the drying standard, the system continued to heat and maintained the fan speed of 31.

[0174] Second test (t = 20 min): weight dropped to 540 g (another 80 g drop), humidity dropped to 28% RH;

[0175] If both conditions are not met simultaneously (weight change 260 g > 1 g, humidity 28 %RH > 10 %RH), continue drying.

[0176] Third test (t = 30 min): weight 505 g (35 g less this time), humidity 12% RH;

[0177] Although the weight change is 295 g > 1 g, the humidity is 12% RH > 10% RH, so extended drying is still required.

[0178] Fourth test (t = 40 min): weight 503 g (2 g decrease this time), humidity 9% RH;

[0179] Weight change 2 g > 1 g but humidity 9 %RH ≤ 10 %RH. If both conditions are not met, continue testing.

[0180] Fifth test (t = 50 min): weight 502 g (reduced by 1 g this time), humidity 8% RH;

[0181] 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.

[0182] Cooling with cold air (15 s): stop the heating element and only let the fan 31 send out cold air of about 25 ℃ at a low speed of 800 rpm for 15 s to reduce the thermal stress of the fabric.

[0183] After cooling is completed, the system automatically powers off and the buzzer 300 emits a short "beep" sound as a reminder.

[0184] At the same time, a "drying completed" notification is pushed to the user's mobile phone through the network module 400.

[0185] In this example, the total electricity consumption is about 0.5 kWh, which saves about 30% energy compared to traditional constant drying. It also avoids damage to clothes caused by over-drying through precise sensing and dynamic temperature control.

[0186] Example 2, combined 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, the side wall of the base 13 is provided with a notch 131, the base 13 is fixed in the housing 2 and is located at the bottom of the notch 22, and the notch 131 and the inner wall of the housing 2 form an axis hole 132;

[0187] The tail of the hook 11 passes through the slot 22 and is placed in the base 13. The shaft 12 passes through the tail of the hook 11, and the end of the shaft 12 extends into the corresponding shaft hole 132, so that the hook 11 and the housing 2 are rotatably connected. The hook 11 rotates into or out of the slot 22.

[0188] The clothes-hanging rod device 6 includes a clothes-hanging rod 61, a bolt 62, and a base 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 base 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 to the base 63.

[0189] The ends of the clothes hanging rod 61 are respectively connected to the corresponding base bodies 63 , so that the clothes hanging rod 61 is rotatably arranged at the hot air channel 21 , and the force applied to the clothes hanging rod 61 is transmitted to the force sensor 4 .

[0190] The humidity sensors 7 are respectively arranged on the housing 2 and the drying bag 8 .

[0191] How to obtain clothing weight: When a user hangs clothes on a clothes hanger 61, the weight of the clothes is transferred through the clothes hanger 61 to the fixed bases 63 at both ends. Each base 63 is connected to the force sensor 4 below via a bolt 62. In this way, the pressure on the clothes hanger 61 (that is, the weight of the clothes) is transmitted to the force sensor 4.

[0192] After the force sensor 4 senses the pressure, it generates a corresponding electrical signal and transmits it to the control panel 5. Based on the magnitude of the signal, the control panel 5 can determine the total weight of the clothes currently hanging on the clothes rod.

[0193] The terms "first", "second", etc. used in the present invention do not indicate any order, quantity or importance, but are only used for distinction.

[0194] As used herein, terms such as "a" and "an" do not limit quantity but rather indicate the presence of at least one of the referenced object. Terms indicating orientation or position, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," and "below," are intended to reflect relative positions, not absolute positions.

[0195] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A clothes dryer comprising 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, characterized in that: The housing has a hot air passage communicating with the inner cavity of the housing. The inner wall of the hot air passage is made of a nano-coating material with low thermal resistance and high temperature resistance. The drying device includes a fan with a variable speed function, a PTC ceramic heater, and an infrared heating module. The fan is arranged in the hot air passage, and the PTC ceramic heater is arranged in the hot air passage and located in front of the air outlet of the fan. The PTC ceramic heater includes a frame made of heat-resistant material and a plurality of PTC ceramic blocks made of positive temperature coefficient material. Each PTC ceramic block is provided with four through-going hot air channels for hot air circulation. The surface of each PTC ceramic block is coated with a high-temperature resistant insulating coating to prevent short circuits and electrical failures. Multiple PTC ceramic blocks are arranged side by side in the frame along the air circulation direction, and adjacent PTC ceramic blocks are connected by a conductive structure. The multiple PTC ceramic blocks are connected to the control panel in series or parallel. The hook device is movably connected to the housing and is used to hang the clothes dryer; The clothes hanging rod device is movably connected to the housing, and the clothes hanging rod device is located at the outlet of the hot air channel; The clothes drying bag is detachably or fixedly mounted on the housing, and the hot air passage is connected to the clothes drying bag; The infrared heating module is arranged in the inner cavity of the shell and faces the drying bag, forming an upper direct heating structure; The force sensor is disposed in the housing, the force sensor, the fan, and the infrared heating module are electrically connected to the control panel respectively, the hook device or the clothes hanging rod device contacts the force sensor, and the force applied to the hook device or the clothes hanging rod device is transmitted to the control panel via 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; The top of the housing is provided with a notch, the hook device comprises a hook, a rotating shaft and a base, the side wall of the base is provided with a notch, the base is fixed in the housing and is located at the bottom of the notch, and the notch and the inner wall of the housing form an axis hole; The tail of the hook passes through the slot 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, so that the hook and the housing are rotatably connected, and the hook rotates into or out of the slot; The force sensor is arranged in the shaft hole and located above the rotating shaft, and the force applied to the hook is transmitted to the force sensor; The PTC ceramic heater is fixed to the inner wall of the hot air channel in an interference fit manner, and the outlet of the hot air channel is provided with a protective grille made of high temperature resistant material; When the control panel starts the drying function, current flows through the PTC ceramic block. After power is turned on, the crystal grains inside the ceramic undergo a self-heating effect, causing the temperature to rise rapidly. The airflow generated by the fan passes through the small hot air channel of the PTC ceramic block. The air is heated to form hot air, which is transported to the drying bag through the hot air channel.

2. The clothes dryer according to claim 1, characterized in that: The clothes hanging rod device includes a clothes hanging rod, a bolt and a base body, the housing is provided with a lower receiving groove, the force sensor is placed in the lower receiving groove, the base body is placed at the bottom of the lower receiving groove, and the bolt passes through the force sensor and the lower receiving groove to connect to the base body; The ends of the clothes hanging rod are respectively connected to the corresponding base bodies, so that the clothes hanging rod is arranged in a rotatable manner at the hot air channel, and the force applied to the clothes hanging rod is transmitted to the force sensor.

3. The clothes dryer according to claim 1, characterized in that: The housing comprises an outer shell and an inner shell, the inner shell being open at the bottom and provided with a groove cavity for clamping the dry clothes bag, the groove cavity being provided with a clamping portion at intervals, the inner shell being provided with the hot air channel running through from top to bottom, the top of the inner shell being provided with an upper receiving groove, the bottom of the upper receiving groove being provided with air holes communicating with the upper receiving groove at intervals, and the humidity sensor being provided in the upper receiving groove; The inner shell is fixed to the inner cavity of the outer shell, and an air passage is formed between the outer shell and the inner shell. The air passage is connected to the hot air passage. The outer shell is provided with an air inlet connected to the ventilation passage. The area between the bottom opening of the inner shell and the outlet of the hot air passage forms a dry bag storage chamber for storing dry clothes bags. The side wall of the outer shell is provided with the control panel. The drying bag comprises an outer metal coating, an inner anti-stick polymer coating, and an intermediate thermal insulation layer. The intermediate thermal insulation layer is a moisture-permeable and water-impermeable membrane that allows water vapor to escape and prevents hot steam from accumulating within the bag. The top of the drying bag is provided with an air guide ring for airtight connection with the hot air passage of the shell. The top of the drying bag is located outside the air guide ring to form an annular clamping portion. The top of the drying bag is located outside the air guide ring to form exhaust holes with a diameter of 0.3 mm to 0.8 mm. The annular clamping portion is inserted into the groove cavity, and the clamping portion and the annular clamping portion are clamped together to realize the assembly of the drying bag and the dryer, and the air guide ring is connected to the hot air channel; The drying bag further comprises elastic spacers and / or rotatable air guide blades. The elastic spacers are fixed at intervals to the inner wall of the drying bag, and the air guide blades are installed in the inner wall of the drying bag via a rotating shaft. The air flow is used to drive the air guide blades to rotate automatically, thereby guiding the hot air distribution and separating the clothes.

4. The clothes dryer according to claim 3, characterized in that: 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 ground terminal of the control panel through the wire to form a ground circuit; At the end of the drying stage, the control panel controls the conductive copper sheet to be connected to the ground circuit, 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; A module box accommodating cavity is formed on the inner side 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 air 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.

5. The clothes dryer according to claim 3, characterized in that: It also includes a bottom cover, a magnetic metal sheet and a magnet sheet, wherein 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 on the bottom of the shell; When the bottom cover is rotated to the side wall of the shell, the groove cavity on the shell is exposed, which is used to insert and fix 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 shell, the magnet sheet and the magnetic metal sheet are attracted together, and the bottom cover is attached to the edge of the shell by magnetic force to close the dry clothes bag storage cavity, and the elastic sealing ring closes the gap between the bottom cover and the shell.

6. The clothes dryer according to claim 1, characterized in that: The clothes dryer further comprises a temperature control protection module, wherein the temperature control protection module comprises a thermistor and a bimetallic 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 a preset threshold, the temperature signal is fed back to the control panel. The control panel adjusts the heating power or turns off the PTC ceramic heater accordingly. The bimetallic temperature control switch is arranged on the air outlet side of the PTC ceramic heater and is electrically connected in series with the PTC ceramic heater. When the temperature at the air outlet side rises to a set safety limit value, the bimetallic strip undergoes mechanical deformation due to thermal expansion and automatically disconnects the electrical contact, thereby achieving physical power-off protection for the PTC ceramic heater. The hot air channel between the PTC ceramic heater and the fan is provided with an air flow equalizing plate made of flame retardant and high temperature resistant material. The air flow equalizing plate is provided with multiple evenly arranged air guide holes for guiding the air flow evenly into the hot air small channel of the PTC ceramic block.

7. The clothes dryer according to claim 6, characterized in that: The wind flow equalizing plate is a composite material plate made of glass fiber reinforced polymer with embedded aluminum silicate fiber mesh. The surface of the wind flow equalizing plate is etched with holes with a pore size of 0.1-0.3 mm and a depth of 0.05-0.1 mm for optimizing air flow laminarization and reducing turbulent noise. A layer of thin-film nanofluorosilane coating with hydrophobic and oleophobic functions is sprayed inside the holes. The thin-film nanofluorosilane coating is also superimposed with a layer of titanium dioxide nanoparticle photocatalytic coating for enhancing the long-term antibacterial and self-cleaning ability of the wind flow equalizing plate.

8. An intelligent clothes drying control method using the clothes dryer according to any one of claims 1 to 7, characterized in that: The following steps are included: Step 1: The user hangs the clothes on the clothes hanging rod device, and the user activates the intelligent drying mode through the control panel. The drying device, force sensor and humidity sensor are activated, and the drying device generates hot air that is blown through the hot air channel to the drying bag to dry the clothes; Step 2: When the preset time arrives, the force sensor transmits the force conditions 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 clothing. 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, which 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 is greater than the preset change value, execute step 2; When the clothes humidity is greater than the preset humidity, go 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 stops working, while the fan of the drying device continues to work to generate cold air. The cold air is blown to the drying bag through the hot air channel to cool the clothes until the preset cooling time ends. Step 4: After the preset cooling time is over, the dryer is turned off, and the drying device, force sensor, and humidity sensor are powered off.

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