Energy-saving clothes dryer and drying method

Abstract

The invention discloses an energy-saving clothes dryer and a drying method. The energy-saving clothes dryer comprises a barrel assembly, a rear air inlet system, a heat recovery system, a cilium treatment assembly and the like. An inner barrel and an outer barrel in the barrel assembly are coaxially arranged, the rear end of the outer barrel and the rear end of the inner barrel form a sealing air box through sealing rings, and dense meshes are formed in the front section of the inner barrel and a rear plate. Airflow generated by a fan of the rear air inlet system enters the air bellow after being heated by a heater; the heat recovery system comprises a waste heat recovery device and a heat pump device, and heat recycling is achieved. The cilium processing assembly comprises a cilium collector and a detachable cilium collecting box, wherein the cilium collector and the outer cylinder are integrally formed. By optimizing air circulation and heat recovery, energy consumption is remarkably reduced, meanwhile, cilium impurities are effectively treated through a multi-layer filtering structure, the drying effect is guaranteed through an intelligent temperature control system, and the beneficial effects of being efficient, capable of saving energy, practical and convenient to use are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothes drying equipment, and in particular to an energy-saving clothes dryer and a drying method which are mainly used in the fields of clothing production, dry cleaning and laundry, and linen production and cleaning. Background Art

[0002] In the garment manufacturing, dry cleaning and laundry industries, and linen production and cleaning, the performance of drying equipment plays a crucial role in production efficiency, cost control, and product quality. Currently, the traditional dryers that dominate the market have limitations in their structure and operating principles, leading to numerous problems in practical applications.

[0003] The structure and working principle of a traditional dryer: Most existing traditional dryers use a top-intake design with the heater located at the top of the device. The inner drum is a fully mesh structure, but the rear panel is not perforated. The fan is usually located at the exhaust vent. During operation, the fan at the exhaust vent exhausts air outward, creating a negative pressure inside the device, which draws in the air in the drum and the hot air heated by the top heater. After being heated by the top heater, the hot air is squeezed from the outer drum into the inner drum, acting on the surface of the clothes to dry them. During the drying process, the hot air passes through the mesh of the inner drum and comes into contact with the clothes. It then passes through the filter plate to remove the fluff before being exhausted from the device by the fan.

[0004] Defects of traditional dryers

[0005] Excessive energy consumption: The overall structure of traditional dryers results in significant heat loss. A significant amount of heat energy is directly discharged to the outside world without being fully utilized during the drying process, resulting in a low efficiency in thermal energy utilization. To speed up drying, heating power and air volume are often increased, further exacerbating energy consumption and significantly increasing operating costs. Against the backdrop of rising energy costs, this issue is becoming an increasingly significant constraint on industry development.

[0006] High risk of clothing damage: Because hot air blows downward from the top and is at a high temperature, the surface of clothing is easily damaged by localized high temperatures during the drying process, resulting in burns, delamination, and other problems. For clothing and linens made of special materials or high value, this risk can reduce the item's aesthetics and lifespan, and even lead to customer complaints, resulting in financial losses and reputational damage to the company involved.

[0007] Low drying efficiency: Due to their structure and operating methods, traditional dryers have slow drying speeds. Long drying times not only reduce production efficiency and limit the amount of business a company can handle per unit time, making it impossible to meet the industry's growing business needs, but also increase operating costs to a certain extent. Low drying efficiency is particularly prominent in busy environments such as dry cleaning, laundries, and linen washing.

[0008] With growing environmental awareness and rising energy costs, industries like apparel manufacturing, dry cleaning, and linen production and cleaning are in urgent need of a new type of dryer that effectively addresses the aforementioned issues with traditional dryers. These new dryers should be energy-efficient and highly efficient, while also ensuring that clothes are not damaged during the drying process. This will enhance the industry's overall competitiveness, reduce operating costs, and meet consumers' expectations for high-quality drying services. Summary of the Invention

[0009] In view of this, the purpose of the present invention is to overcome the shortcomings of the existing related technologies and to provide an energy-saving clothes dryer and drying method to solve the problems of high energy consumption, large heat loss, high risk of drying clothes, and slow drying speed in traditional dryers. Specifically, by optimizing the structural design and work process, such as using waste heat, heat pump heat, and a fully enclosed condensation recovery system, as well as sealing the inner and outer drums, energy utilization is improved and energy consumption is reduced; the air intake method is changed to avoid local high temperatures and reduce clothing damage; an innovative front-end exhaust design ensures uniform heating of clothes, and the combination with a heat recovery system increases drying speed; a condensation dehumidification device is installed and the outer drum and cilia collector structure are optimized to improve overall performance and meet the needs of related industries.

[0010] In order to achieve the above-mentioned object, the present invention provides an energy-saving clothes dryer in a first aspect, comprising:

[0011] The cylinder assembly includes an inner cylinder with a front opening and an inner cylinder rear plate opening, and an outer cylinder coaxially arranged with the inner cylinder. The rear ends of the outer cylinder and the inner cylinder form a sealed bellows through a sealing ring. The front openings and rear plate openings of the inner cylinder are densely meshed structures.

[0012] The rear air intake system includes a fan located on the air inlet side of the wind box and a heater located on the air outlet side of the fan;

[0013] Heat recovery system, including waste heat recovery device and heat pump device;

[0014] A cilia processing assembly, comprising a cilia collector integrally formed with the outer cylinder and a detachable cilia collection box;

[0015] Among them, the airflow generated by the fan enters the bellows after being heated, and enters the inner cylinder through the openings on the rear plate of the inner cylinder. After the humid airflow is discharged through the openings in the front section, it passes through the ciliary processing component and the heat recovery system in sequence for recycling.

[0016] Furthermore, the heat recovery system also includes a condensation and dehumidification device. The waste heat recovery device, the heat pump device and the condensation and dehumidification device are connected through pipelines to form a closed loop to achieve heat recycling.

[0017] Furthermore, the airflow generated by the fan is heated by the heater and then enters the bellows, where the cold and hot air are mixed, and the mixed air enters the inner cylinder through the mesh holes on the rear plate of the inner cylinder.

[0018] Furthermore, the inner drum rotates to heat the clothes evenly, and the moist hot air is pushed to the front section of the inner drum under pressure and discharged downwards through the exhaust holes in the front section.

[0019] Furthermore, the dryer is a condensing dryer, and the exhausted air enters the condensing dehumidification system after passing through the ciliary collection box. The high-pressure heat of the compressor is transported to the fan suction port through the heat pump coil and then blown into the bellows for circulation.

[0020] Furthermore, the condensation recovery system includes a condenser, an evaporation device and a compressor, the condenser and the evaporation device are connected by a pipeline, and the compressor is used to drive a refrigeration cycle.

[0021] Furthermore, it also includes a loading door and a cleaning door panel, wherein the loading door is used for putting in and taking out clothes, and the cleaning door panel is used for cleaning the ciliary collection box.

[0022] Furthermore, it also includes an operating system, which includes a power switch, a buzzer, and control buttons for setting drying time, temperature and mode.

[0023] Furthermore, a multi-layer filter structure is provided in the ciliary collection box, and the filter structure is made of non-woven fabric or metal filter material.

[0024] Furthermore, the clothes dryer is provided with an intelligent temperature control system, which includes a temperature sensor and a controller. The temperature sensor is used to monitor the temperature of the inner drum, and the controller adjusts the power of the heater according to a feedback signal from the temperature sensor.

[0025] Furthermore, it also includes an electrical box for installing the electrical control components of the dryer; it also includes a radiator for dissipating the heat generated by the operation of the refrigeration system; it also includes a refrigeration system, including a condenser, an evaporating device and a compressor, the condenser and the evaporating device are connected by a pipeline, the compressor is used to drive the refrigeration cycle, and the refrigeration system is connected to the condensation and dehumidification device.

[0026] Furthermore, a front plate is provided at the opening of the inner tube, and densely distributed holes are provided on the front plate.

[0027] A second aspect of the present invention provides a drying method for an energy-saving clothes dryer, comprising the following steps:

[0028] The fan generates airflow which is heated by the heater and then sent into the wind box to mix with the return cold air to form mixed air;

[0029] The mixed air enters the inner drum through the mesh holes on the back plate, and the inner drum rotates to heat the clothes evenly.

[0030] The moist hot air is discharged through the exhaust holes at the front of the inner tube, and then passes through the ciliary collector and the ciliary collection box to filter out impurities.

[0031] The filtered air enters the heat recovery system, where the heat is recycled through a closed loop of waste heat recovery device and heat pump device; or

[0032] The filtered air enters the heat recovery system and realizes heat recycling through the closed loop of waste heat recovery device, heat pump device and condensation dehumidification device.

[0033] The present invention adopts the above technical solution, which has at least the following beneficial effects:

[0034] The present invention effectively reduces heat loss and significantly improves energy efficiency through the coordinated operation of a fully enclosed condensation recovery system, a heat pump heat recovery device, and a waste heat recovery unit. Compared to traditional dryers, which directly discharge a large amount of heat energy without fully utilizing it, the present invention recovers the waste heat from the exhausted hot air and returns it to the circulation system, avoiding energy waste. At the same time, the overall thermal insulation structure further reduces heat loss and energy consumption during the drying process, thereby significantly reducing operating costs and alleviating the pressure caused by rising energy costs.

[0035] This invention utilizes a rear-intake design and a unique bellows structure to ensure thorough mixing of hot and cold air within the bellows, avoiding the localized high temperatures typically associated with traditional dryers, where hot air is blown downward from the top. The perforated design on the front and rear panels of the inner drum, combined with the inner drum's rotation, ensures uniform heating of clothing throughout the drying process, significantly reducing the likelihood of damage such as burns and delamination caused by localized overheating. This design also helps preserve the aesthetics and lifespan of clothing and linens made of special materials or of high value, reducing the risk of customer complaints and safeguarding corporate reputation.

[0036] The front exhaust design of the present invention allows the wind to pass from the rear of the inner drum to the front, ensuring that each piece of clothing is evenly heated and accelerating the evaporation of water. The optimized air circulation structure, combined with the coordinated work of components such as the fan, heater, and bellows, forms an efficient air circulation system. At the same time, the heat recovery system continuously provides heat to avoid extended drying time due to insufficient heat. Compared with traditional dryers, the present invention effectively shortens the drying time and increases the business processing volume per unit time, meeting the growing business needs of industries such as clothing production, dry cleaning and laundry shops, and linen production and cleaning, thereby improving corporate production efficiency and competitiveness.

[0037] The lint collector, integrally formed with the outer drum, and the removable lint collection box facilitate the collection and removal of impurities such as lint generated during the drying process, preventing lint from clogging the air duct and impacting drying efficiency and proper operation. The multi-layered filtration structure further improves impurity filtration efficiency, ensuring smooth air circulation within the dryer while also reducing maintenance frequency and costs.

[0038] The condensing dehumidification device in this invention achieves efficient dehumidification for condensing dryers, meeting the drying needs of different clothing types and drying scenarios. The operating system features a power switch, buzzer, and control buttons for setting drying time, temperature, and mode, making it easy to operate. The intelligent temperature control system uses a temperature sensor to monitor the inner drum temperature in real time. The controller adjusts the heater power based on the feedback signal, achieving precise temperature control, ensuring drying results while further improving energy efficiency and operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a front view of the energy-saving clothes dryer of the present invention;

[0041] Figure 2 is a side view of the energy-saving clothes dryer of the present invention;

[0042] Figure 3 This is a rear view of the energy-saving clothes dryer of the present invention;

[0043] Figure 4 It is a top view of the energy-saving clothes dryer of the present invention.

[0044] In the figure: 1. Loading door; 2. Cleaning door panel; 3. Operating system; 4. Power switch; 5. Buzzer; 6. Bellows; 7. Inner cylinder; 8. Outer cylinder; 9. Sealing ring; 10. Fan; 11. Heater; 12. Waste heat recovery device; 13. Heat pump device; 14. Refrigeration system; 15. Lipid collector; 16. Lipid collection box; 17. Drain outlet; 18. Evaporation device; 19. Radiator; 20. Frequency conversion main motor; 21. Electrical box. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0046] like Figures 1 to 4 As shown, this embodiment provides an energy-saving clothes dryer, comprising: a drum assembly, including an inner drum 7 having a front opening and a rear plate opening, an outer drum 8 coaxially arranged with the inner drum 7, the rear ends of the outer drum 8 and the rear ends of the inner drum 7 forming a sealed bellows 6 via a sealing ring 9, and the front end and rear plate openings of the inner drum 7 are densely meshed structures;

[0047] The rear air intake system includes a fan 10 provided on the air inlet side of the wind box 6 and a heater 11 located on the air outlet side of the fan 10;

[0048] The first heat recovery system in this embodiment includes a waste heat recovery device 12 and a heat pump device 13. The waste heat recovery device and the heat pump device are connected through a pipeline to form a closed loop to achieve heat recycling.

[0049] The second heat recovery system includes a waste heat recovery device 12, a heat pump device 13, a heat collecting pipe, and a condensing and dehumidifying device (indicated by the symbols in the figure); the waste heat recovery device, the heat pump device, the heat collecting pipe, and the condensing and dehumidifying device are connected by pipes to form a closed loop to achieve heat recycling;

[0050] The cilia processing assembly includes a cilia collector 15 integrally formed with the outer tube 8 and a detachable cilia collection box 16;

[0051] An electrical box 21 is used to install the electrical control components of the clothes dryer; a radiator 19 is used to dissipate heat generated by the operation of the refrigeration system 14; the refrigeration system 14 includes a condenser, an evaporator, and a compressor, the condenser and the evaporator are connected by a pipe, the compressor is used to drive the refrigeration cycle, and the refrigeration system is connected to the condensation dehumidification device;

[0052] Among them, the airflow generated by the fan 10 enters the bellows 6 after being heated, and enters the inner cylinder 7 through the opening on the rear plate of the inner cylinder 7. After the humid airflow is discharged through the opening in the front section, it passes through the ciliary processing component (ciliary collector 15 and ciliary collection box 16) and the heat recovery system (waste heat recovery device 12, heat pump device 13 and condensation dehumidification device) in sequence for recycling.

[0053] As an implementation method, the waste heat recovery device 12, the heat pump device 13 and the condensation and dehumidification device in this embodiment are connected through pipes to form a closed loop to achieve heat recycling.

[0054] As an embodiment, the air flow generated by the fan 10 enters the air box 6 after being heated by the heater 11, and the hot and cold air is mixed in the air box 6. The mixed air enters the inner cylinder 7 through the mesh holes on the back plate of the inner cylinder 7. The heat collecting pipe is used to collect the heat in the hot and humid air discharged during the drying process and transfer it to the heat pump device.

[0055] As an embodiment, the rotation of the inner cylinder 7 in this embodiment makes the clothes evenly heated, and the humid hot air is pushed to the front section of the inner cylinder 7 under pressure and discharged downward through the exhaust holes in the front section. The refrigeration system circulates the refrigerant driven by the compressor, releases heat at the condenser for heating air, and absorbs moisture in the humid air at the evaporator.

[0056] As an embodiment, in this embodiment, the clothes dryer is a condensing clothes dryer. The discharged air enters the condensing and dehumidifying system (consisting of a condenser (not labeled in the figure), an evaporator 18, and a compressor (not labeled in the figure)) after passing through the fiber collecting box 16. The high-temperature heat of the compressor is delivered to the air inlet of the fan 10 through the heat pump coil and then blown into the air box 6 for circulation. The radiator is connected with the condenser of the refrigeration system and is used to dissipate the heat generated during the condensation process.

[0057] As an embodiment, the condensing and recycling system in this embodiment includes a condenser, an evaporator 18, and a compressor. The condenser and the evaporator 18 are connected by a pipeline, and the compressor is used to drive the refrigeration cycle. The control mainboard is arranged in the electrical box 21 for coordinated control of the operation of the fan, the heater, the compressor, and the heat pump device.

[0058] As an embodiment, this embodiment also includes a loading door 1 and a cleaning door plate 2. The loading door 1 is used to put in and take out clothes, and the cleaning door plate 2 is used to clean the fiber collecting box 16.

[0059] As an embodiment, this embodiment also includes an operating system 3, which includes a power switch 4, a buzzer 5, and control buttons for setting the drying time, temperature, and mode. The operating system is electrically connected with the control mainboard in the electrical box.

[0060] As an embodiment, the fiber collecting box 16 in this embodiment is provided with a multi-layer filtering structure, and the filtering structure is made of non-woven fabric or metal filter mesh material. The drain 17 is arranged at the bottom of the evaporator 18 for discharging the moisture generated during the condensation process.

[0061] As an implementation method, in this embodiment, the dryer is provided with an intelligent temperature control system, which includes a temperature sensor and a controller. The temperature sensor is used to monitor the temperature of the inner drum 7, and the controller adjusts the power of the heater 11 according to the feedback signal of the temperature sensor.

[0062] As an implementation manner, in this embodiment, a front plate is provided at the opening position of the inner cylinder, and the front plate is provided with dense holes.

[0063] Example 2

[0064] Based on the above-mentioned embodiment 1, the second embodiment further supplements the description that the clothes dryer in this embodiment fully integrates innovative technologies in structural design and functional implementation, as follows:

[0065] 1. Overall structure

[0066] Cylinder Assembly: Inner cylinder 7 and outer cylinder 8 are coaxially arranged. The inner cylinder 7 is constructed of high-quality stainless steel, with a dense mesh structure on the front section, rear plate, and front plate. The mesh on the front section and rear plate allows for air circulation, while the dense holes on the front plate assist in air exhaust and circulation. The rear ends of the outer cylinder 8 and inner cylinder 7 are tightly connected via a high-temperature-resistant, highly airtight sealing ring 9, forming a sealed bellows 6. This bellows 6 serves as the key area for mixing hot and cold air, providing a stable source of hot air for the subsequent drying process.

[0067] Rear Air Intake System: A high-efficiency, energy-saving fan 10 is installed on the air inlet side of the bellows 6. Its energy efficiency far exceeds industry standards, providing stable and powerful airflow. A PTC heating element 11 is installed on the air outlet side of the fan 10. PTC heating elements offer rapid heating, high thermal efficiency, and excellent safety. The airflow generated by the fan 10 is heated by the heater 11 before entering the sealed bellows 6.

[0068] Heat recovery system: Consists of a waste heat recovery unit 12, a heat pump unit 13, and a condensation and dehumidification unit. The waste heat recovery unit 12 utilizes a plate-type waste heat recovery unit, which, through efficient heat exchange plates, can recover a large amount of waste heat from the exhaust humid airflow. The heat pump unit 13 enables efficient heat conversion and transport. The condensation and dehumidification unit includes a condenser, an evaporator 18, and a compressor, all interconnected by pipes. These three work together to dehumidify the humid air.

[0069] Cilia treatment assembly: Cilia collector 15 is integrally formed with outer drum 8. During the drying process, cilia and other impurities are initially intercepted by cilia collector 15 as they flow with the airflow. A detachable cilia collection box 16 is located below cilia collector 15. The box houses a three-layer multi-layer filter structure composed of alternating non-woven fabric and metal screens, effectively filtering cilia and impurities of varying sizes.

[0070] 2. Workflow

[0071] After turning on power switch 4 and setting the drying time, temperature, and mode through operating system 3, fan 10 starts. The generated airflow is heated by heater 11 to become hot air. After entering sealed bellows 6, the hot air is thoroughly mixed with any return cold air, forming a mixed air with uniform temperature. The mixed air enters inner drum 7 through the mesh on the rear panel. At this time, inner drum 7 continuously rotates at the set speed (driven by variable frequency main motor 20), causing the clothes to tumble and ensure that the clothes are fully exposed to the mixed air and evenly heated.

[0072] As moisture from the clothes evaporates, the moist, hot air is pushed to the front section of the inner drum 7 by the pressure of the fan 10 and discharged downward through the front exhaust port. The discharged air first passes through the lint treatment assembly (lint collector 15 and lint collection box 16), where lint and impurities are trapped within the lint collection box 16 by the multi-layered filtering structure. In the condensing dryer of this embodiment, the filtered, moist air enters the heat recovery system. It first passes through the waste heat recovery device 12, where the heat is recovered to the fan 10 intake or heating unit, achieving initial heat recovery. The air then enters the condensation and dehumidification system (composed of a condenser, evaporator 18, and compressor). Driven by the compressor, the condenser and evaporator 18 work together to condense and dehumidify the air, removing moisture. Simultaneously, the high-pressure heat generated by the compressor is transported via the heat pump coil to the fan 10 intake and then blown into the bellows 6 for circulation, further improving energy efficiency.

[0073] In this embodiment, the loading door 1 adopts a double-layer sealing structure, which not only facilitates the user to load and unload clothes, but also effectively prevents heat loss during the drying process. The cleaning door panel 2 is located outside the lint collection box 16. When the lint collection box 16 contains a lot of impurities, the user can open the cleaning door panel 2 and easily remove the lint collection box 16 for cleaning.

[0074] This embodiment also provides a drying method based on the above energy-saving clothes dryer, and the specific process is as follows:

[0075] When the dryer is turned on, fan 10 begins to operate, drawing ambient air into the rear air intake system. This airflow passes through heater 11, where it is heated to a set temperature (typically 50-70°C) before entering sealed bellows 6. Inside bellows 6, the heated air mixes with the cold air returning from inner drum 7, forming a uniformly heated mixed air (with a temperature differential controlled within ±5°C). This mixed air then enters inner drum 7 through the densely meshed rear panel.

[0076] Driven by the variable frequency main motor 20 at 50-80 rpm, the inner drum 7 rotates, tumbling the clothes and ensuring that each piece of clothing is fully exposed to the mixed air. As moisture evaporates from the clothes, the moist, hot air, under the pressure generated by the fan 10 (typically 100-150 Pa), moves toward the front of the inner drum and is discharged downward through the front exhaust holes.

[0077] The exhaust air first passes through the ciliary collector 15 integrally formed with the outer cylinder 8, which initially intercepts larger ciliary impurities, and then enters the multi-layer filter structure (non-woven fabric and metal filter mesh alternately arranged) in the ciliary collection box 16, achieving a ciliary filtration efficiency of more than 99%. The filtered humid air enters the heat recovery system:

[0078] First, the waste heat recovery device 12 uses a plate heat exchanger to transfer the heat in the exhaust air to the fresh air, and the recovery efficiency can reach more than 60%;

[0079] Then it enters the condensation dehumidification system, the compressor transports the high-pressure gaseous refrigerant to the condenser, releasing heat to heat the air. At the same time, the refrigerant is liquefied and enters the evaporation device 18 through the throttling device, absorbing the heat in the humid air and condensing it into water. The dried air is sent back to the bellows 6 for recycling through the heat pump device 13.

[0080] The temperature sensor in the intelligent temperature control system monitors the temperature of the inner drum 7 in real time and feeds this data back to the controller. If the temperature of the inner drum 7 deviates from the set value, the controller immediately adjusts the power of the heater 11 to ensure that the drying temperature remains within the ideal range, ensuring effective drying while avoiding energy waste and damage to clothes.

[0081] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An energy-saving clothes dryer, characterized in that: include: The cylinder assembly includes an inner cylinder with a front opening and an inner cylinder rear plate opening, and an outer cylinder coaxially arranged with the inner cylinder. The rear ends of the outer cylinder and the inner cylinder form a sealed bellows through a sealing ring. The front openings and rear plate openings of the inner cylinder are densely meshed structures. The rear air intake system includes a fan located on the air inlet side of the wind box and a heater located on the air outlet side of the fan; The heat recovery system includes a waste heat recovery device and a heat pump device; the waste heat recovery device and the heat pump device are connected by a pipeline to form a closed loop to achieve heat recycling; A cilia processing assembly, comprising a cilia collector integrally formed with the outer cylinder and a detachable cilia collection box; Among them, the airflow generated by the fan enters the bellows after being heated, and enters the inner cylinder through the openings on the rear plate of the inner cylinder. After the humid airflow is discharged through the openings in the front section, it passes through the ciliary processing component and the heat recovery system in sequence for recycling.

2. The energy-saving clothes dryer according to claim 1, characterized in that: The heat recovery system also includes a condensation and dehumidification device. The waste heat recovery device, the heat pump device and the condensation and dehumidification device are connected through pipelines to form a closed loop.

3. The energy-saving clothes dryer according to claim 2, characterized in that: The inner drum rotates to heat the clothes evenly, and the moist hot air is pushed to the front section of the inner drum under pressure and discharged downwards from the exhaust holes in the front section.

4. The energy-saving clothes dryer according to claim 3, characterized in that: The dryer is a condensing dryer. The exhausted air passes through the cilia collection box and then enters the condensing dehumidification system. The high-pressure heat of the compressor is transported to the fan suction port through the heat pump coil and then blown into the bellows for circulation.

5. The energy-saving clothes dryer according to claim 4, characterized in that: It also includes a condensation recovery system, which includes a condenser, an evaporation device and a compressor. The condenser and the evaporation device are connected through a pipeline, and the compressor is used to drive a refrigeration cycle.

6. The energy-saving clothes dryer according to any one of claims 1 to 5, characterized in that: The utility model also comprises a loading door and a cleaning door panel, wherein the loading door is used for putting in and taking out clothes, and the cleaning door panel is used for cleaning the cilia collecting box.

7. The energy-saving clothes dryer according to claim 6, characterized in that: Also included is an operating system comprising a power switch, a buzzer, and control buttons for setting drying time, temperature, and mode.

8. The energy-saving clothes dryer according to claim 7, characterized in that: A multi-layer filter structure is provided in the ciliary collection box, and the filter structure is made of non-woven fabric or metal filter material.

9. The energy-saving clothes dryer according to claim 8, characterized in that: It also includes a refrigeration system, including a condenser, an evaporation device and a compressor. The condenser and the evaporation device are connected by a pipeline. The compressor is used to drive a refrigeration cycle. The refrigeration system is connected to the condensation and dehumidification device.

10. A drying method for an energy-saving clothes dryer, characterized in that: The energy-saving clothes dryer according to any one of claims 1 to 9 comprises the following steps: The fan generates airflow which is heated by the heater and then sent into the wind box to mix with the return cold air to form mixed air; The mixed air enters the inner drum through the mesh holes on the back plate, and the inner drum rotates to heat the clothes evenly. The moist hot air is discharged through the exhaust holes at the front of the inner tube, and then passes through the ciliary collector and the ciliary collection box to filter out impurities. The filtered air enters the heat recovery system, where the heat is recycled through a closed loop of waste heat recovery device and heat pump device; or The filtered air enters the heat recovery system and realizes heat recycling through the closed loop of waste heat recovery device, heat pump device and condensation dehumidification device.

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