Clothes dryer and clothes drying method

Abstract

The invention relates to the technical field of household appliances, and discloses a clothes dryer and a clothes drying method. The clothes dryer comprises a containing barrel, a heat pump circulation device and an adsorption dehumidification device. The containing barrel is used for containing clothes to be dried. The heat pump circulating device comprises a circulating fan, a condenser, a first evaporator and a compressor, the condenser, the first evaporator and the compressor form circulation, air is heated through the condenser and blown into the containing barrel under the action of the circulating fan so as to dry clothes to be dried in the containing barrel, and wet and hot air exhausted from the containing barrel is cooled through the first evaporator and then heated again through the condenser; the adsorption dehumidification device is arranged between the first evaporator and the condenser, and air cooled by the first evaporator is subjected to adsorption dehumidification through the adsorption dehumidification device. The clothes are dried in a heat pump drying and adsorption dehumidification combined mode, the clothes drying efficiency is improved, the clothes drying time is shortened, the air dehumidification effect is improved, energy consumption and cost are reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a clothes dryer and a clothes drying method. Background Technology

[0002] In recent years, as people's awareness of pursuing a better quality of life has increased, clothes dryers have gradually gained popularity among consumers due to their unique clothes drying function. Currently, clothes dryers are mainly divided into three types: condenser dryers, ventilated dryers, and heat pump dryers. Heat pump dryers are a new type of clothes drying equipment that uses heat pump technology. Compared with other dryers, heat pump dryers have a lower heat pump temperature, which reduces damage to clothes, improves their fluffiness, and the heat pump system can recover hot air, resulting in lower energy consumption, making them very popular.

[0003] Existing heat pump dryers have insufficient dehumidification capacity, resulting in longer drying times and higher drying temperatures in the later stages of drying, leading to higher energy consumption. During the later stages of drying, the increased humidity inside the machine causes condensation to form on the side and front panels, dripping onto the floor and negatively impacting the user experience. Summary of the Invention

[0004] Based on the above problems, the purpose of this invention is to provide a clothes dryer and a clothes drying method that can improve clothes drying efficiency, reduce clothes drying time, enhance air dehumidification effect, reduce energy consumption and cost, achieve the goal of efficient dehumidification, and improve the user experience.

[0005] To achieve the above objectives, the following technical solution is provided:

[0006] In a first aspect, the present invention provides a clothes dryer, comprising:

[0007] A container for holding clothes to be dried;

[0008] A heat pump circulation device includes a circulating fan, a condenser, a first evaporator, and a compressor that form a circulation. Air is heated by the condenser and blown into the container under the action of the circulating fan to dry the clothes to be dried in the container. The hot and humid air discharged from the container is cooled by the first evaporator and then reheated by the condenser.

[0009] An adsorption dehumidification device is installed between the first evaporator and the condenser, and the air cooled by the first evaporator is adsorbed and dehumidified by the adsorption dehumidification device.

[0010] As an optional solution for the dryer provided by the present invention, the adsorption dehumidification device includes a conveying component and an adsorption component disposed on the conveying component. The adsorption component stores an adsorption medium, and the conveying component is used to convey the adsorption component between the first evaporator and the condenser.

[0011] As an optional solution for the dryer provided by the present invention, the conveying component includes an adsorption zone and a regeneration zone. The adsorption medium located in the adsorption zone can adsorb water vapor, and the adsorption medium located in the regeneration zone can exchange heat with the compressor for desorption and regeneration.

[0012] As an optional embodiment of the dryer provided by the present invention, the heat pump circulation device further includes a cooling fan, which is used to blow air to the compressor so that the compressor exchanges heat with the adsorption medium for cooling.

[0013] As an optional solution for the dryer provided by the present invention, the heat pump circulation device further includes a second evaporator, through which the air after heat exchange with the compressor is cooled so that it can be blown by the cooling fan again.

[0014] As an optional embodiment of the dryer provided by the present invention, the second evaporator is connected in parallel with the first evaporator.

[0015] As an optional embodiment of the dryer provided by the present invention, a filter is provided between the container and the first evaporator, the filter being used to filter lint from the humid and hot air discharged from the container.

[0016] Secondly, the present invention also provides a method for drying clothes, which uses the above-mentioned dryer to dry clothes, including the following steps: air is heated by a condenser and blown into a container under the action of a circulating fan to dry the clothes to be dried in the container; the hot and humid air discharged from the container is cooled by a first evaporator; and the air cooled by the first evaporator is dehumidified by an adsorption dehumidification device.

[0017] As an optional solution to the drying method provided by the present invention, when the humidity inside the machine is less than the preset humidity, the switch between the dehumidification channel and the inside of the machine is closed, and the adsorption dehumidification device uses external cooling air for regeneration cooling; when the humidity inside the machine is greater than or equal to the preset humidity, the switch between the dehumidification channel and the inside of the machine is opened, and the adsorption dehumidification device uses external cooling air for regeneration cooling, and the hot and humid air inside the machine is dehumidified.

[0018] As an optional solution to the drying method provided by the present invention, when the drying time is less than the preset time, the dehumidification speed of the adsorption dehumidification device is greater than the preset dehumidification speed; when the drying time is greater than or equal to the preset time, the dehumidification speed of the adsorption dehumidification device is less than or equal to the preset dehumidification speed.

[0019] The beneficial effects of this invention are as follows:

[0020] The dryer provided by this invention uses a container to hold clothes to be dried. A heat pump circulation device provides hot air to the container, which exchanges heat with the clothes to dry them. The air after heat exchange forms a humid airflow. An adsorption dehumidification device dehumidifies the humid airflow by adsorption. Specifically, air is heated by a condenser to form high-temperature dry air. The high-temperature dry air is blown into the container holding the clothes to be dried by a circulating fan. The high-temperature dry air exchanges heat with the wet clothes and absorbs moisture to form humid air. The humid air discharged from the container exchanges heat with a first evaporator to cool down, achieving primary dehumidification of the humid air. The humid air after primary dehumidification undergoes secondary dehumidification under the adsorption of the adsorption dehumidification device. The dry air is then heated again by the condenser to form a circulating airflow, which circulates and dries the clothes in the container. By combining heat pump drying and adsorption dehumidification, the drying efficiency of clothes is improved, the drying time is reduced, the air dehumidification effect is enhanced, energy consumption and costs are reduced, and the goal of high-efficiency dehumidification is achieved, thus improving the user experience.

[0021] The drying method provided by this invention involves heating air via a condenser to form high-temperature dry air. This high-temperature dry air is then blown into a container holding clothes to be dried by a circulating fan. The high-temperature dry air exchanges heat with the wet clothes and absorbs moisture, forming humid air. The humid air discharged from the container exchanges heat with a first evaporator for cooling, achieving primary dehumidification. The humid air after primary dehumidification undergoes secondary dehumidification under the adsorption of an adsorption dehumidification device. The dry air is then heated again by the condenser to form a circulating airflow, which circulates and dries the clothes in the container. By combining heat pump drying with adsorption dehumidification, the drying efficiency of clothes is improved, the drying time is reduced, the air dehumidification effect is enhanced, energy consumption and costs are reduced, and the goal of high-efficiency dehumidification is achieved, thus improving the user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the principle of a clothes dryer provided in a specific embodiment of the present invention, wherein the cooling fan is located upstream of the compressor;

[0024] Figure 2 This is a schematic diagram of the principle of a clothes dryer provided in a specific embodiment of the present invention, wherein the cooling fan is located downstream of the compressor.

[0025] In the picture:

[0026] 1. Container tank; 2. Circulating fan; 3. Condenser; 4. First evaporator; 5. Compressor; 6. Filter; 7. Expansion valve; 8. Conveying components; 9. Second evaporator; 10. Cooling fan; 11. Switch. Detailed Implementation

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] like Figure 1 and Figure 2As shown, this embodiment provides a clothes dryer, which includes a container 1, a heat pump circulation device, and an adsorption dehumidification device. The container 1 is used to hold clothes to be dried. The heat pump circulation device provides hot air to the container 1, and the hot air exchanges heat with the clothes to dry them. The air after heat exchange forms a humid airflow. The adsorption dehumidification device dehumidifies the humid airflow by adsorption. Specifically, the heat pump circulation device includes a circulating fan 2 and a condenser 3, a first evaporator 4, and a compressor 5 that form the circulation. Air is heated by the condenser 3 and blown into the container 1 by the circulating fan 2 to dry the clothes in the container 1. The humid air discharged from the container 1 is cooled by the first evaporator 4 and then reheated by the condenser 3. The adsorption dehumidification device is located between the first evaporator 4 and the condenser 3. The air cooled by the first evaporator 4 is dehumidified by the adsorption dehumidification device.

[0031] Air is heated by condenser 3 to form high-temperature dry air. This high-temperature dry air is blown into container 1, which holds clothes to be dried, by circulating fan 2. The high-temperature dry air exchanges heat with the wet clothes and absorbs moisture to form humid air. The humid air discharged from container 1 exchanges heat with the first evaporator 4 to cool down, achieving primary dehumidification of the humid air. The humid air after primary dehumidification undergoes secondary dehumidification under the adsorption of the adsorption dehumidification device. The dry air is then heated again by condenser 3 to form a circulating airflow, which circulates and dries the clothes in container 1. By combining heat pump drying with adsorption dehumidification, the drying efficiency of clothes is improved, the drying time is reduced, the air dehumidification effect is enhanced, energy consumption and costs are reduced, the goal of high-efficiency dehumidification is achieved, and the user experience is improved.

[0032] It should be noted that in a heat pump dryer, there are two closed loops: a heat pump loop and an air loop. These two loops exchange heat through the first evaporator 4 and the condenser 3. In the heat pump loop, the compressor 5 consumes a small amount of electricity to drive the refrigerant circulation. The refrigerant absorbs the waste heat from the exhaust gas and the latent heat of the condensate in the first evaporator 4, and then releases this heat at a higher temperature in the condenser 3 to the air entering the first evaporator 1. In the air loop, driven by the circulating fan 2, the hot, humid air discharged from the first evaporator 1 is cooled in the first evaporator 4, and moisture is condensed. Then, the cool, low-humidity air passes through the condenser 3 and is heated, but the moisture content remains unchanged, resulting in a decrease in relative humidity. At this point, the air has a strong ability to absorb moisture. Finally, the hot, low-relative-humidity air blows over the surface of the clothes, causing heat and moisture exchange, releasing heat and removing moisture.

[0033] It is understandable that an expansion valve 7 is installed between the condenser 3 and the first evaporator 4, forming a circulation loop with the compressor 5, condenser 3, expansion valve 7, and first evaporator 4. The compressor 5 draws in vapor from the first evaporator 4, maintaining its low temperature and low pressure, and compresses it into high-pressure, high-temperature vapor. Since the refrigerant needs to be recycled and reused, if the refrigerant is not compressed and directly discharged into the condenser 3, its ambient temperature is already higher than its boiling point, making it impossible to cool and condense into a liquid. Only by increasing the refrigerant pressure, making its condensation point (boiling point) higher than the outdoor temperature, can the refrigerant dissipate heat to the outside, lowering its temperature and causing it to condense into a liquid.

[0034] The condenser 3 cools the high-temperature, high-pressure vapor discharged from the compressor 5 into a liquid, and the released heat is carried away by water or air. The condenser 3 can be divided into three types: water-cooled, air-cooled, and water-and-air mixed-cooling. Most condensers 3 adopt a finned coil structure. To improve heat exchange efficiency, aluminum alloy fins are often pressed into various shapes to increase the heat exchange area. The expansion valve 7 acts as a throttling device. Its working principle is as follows: when the refrigerant fluid passes through a small orifice, a portion of the static pressure is converted into dynamic pressure, the flow velocity increases sharply, becoming turbulent flow. The fluid is disturbed, frictional resistance increases, and static pressure decreases.

[0035] The expansion valve 7 can be microprocessor controlled to meet the requirements of precise, high-speed, and large-amplitude load adjustment. The expansion valve 7 is used to regulate the refrigerant temperature at the outlet of the first evaporator 4. This can be achieved by collecting superheat signals from temperature and pressure sensors located at the outlet of the first evaporator 4, and using feedback regulation to control the opening of the expansion valve 7. Alternatively, a combined feedforward and feedback regulation can be used to eliminate the superheat control lag caused by the heat capacity of the first evaporator 4 tube wall and the sensor, improving the system regulation quality and keeping the superheat within the target range over a wide evaporation temperature range.

[0036] The first evaporator 4 evaporates the liquid into gas, absorbing heat. Since condensate is continuously generated between the fins of the first evaporator 4, the surface of the fins of the first evaporator 4 must be hydrophobically treated to reduce the main thermal resistance between the vapor and the wall.

[0037] In some embodiments, the adsorption dehumidification device includes a conveying member 8 and an adsorbent disposed on the conveying member 8. The adsorbent stores an adsorption medium, and the conveying member 8 is used to convey the adsorbent between the first evaporator 4 and the condenser 3. The adsorbent, as a container for the adsorption medium, can be square or circular. The adsorption medium can be a solid material with strong water absorption capacity, such as activated carbon, silica gel, calcium chloride, or metal-organic framework (MOF). The adsorption medium can be attached to a mesh or to fins, and the area of ​​the mesh or fins perpendicular to the airflow direction is approximately the same as the fin area of ​​the first evaporator 4.

[0038] Optionally, the conveying component 8 includes an adsorption zone and a regeneration zone. The adsorption medium in the adsorption zone can adsorb water vapor, and the adsorption medium in the regeneration zone can exchange heat with the compressor 5 for desorption and regeneration. When the adsorption medium in the regeneration zone exchanges heat with the compressor 5, it can both cool the compressor 5, reduce the number of times the compressor 5 trips, and lower the probability of compressor 5 failure, and also achieve desorption and regeneration of the adsorption medium, enabling the reuse of the adsorption medium without the need for additional heating devices, thus reducing costs.

[0039] The conveyor 8 can be a track-like structure, forming a circular closed loop, facilitating the recycling and regeneration of the adsorption medium. The conveyor 8 can be driven by a motor or other drive components. During the movement of the conveyor 8, the division between the adsorption zone and the regeneration zone remains unchanged. It can be understood that the dryer includes a body; the conveyor 8, located within the heat pump channel of the body and facing the first evaporator 4, belongs to the adsorption zone, while the adsorption component located outside the heat pump channel of the body and close to the compressor 5 belongs to the regeneration zone.

[0040] To accelerate the heat exchange efficiency between the compressor 5 and the adsorbent medium to be desorbed, the heat pump cycle device may optionally include a cooling fan 10. The cooling fan 10 blows air onto the compressor 5 to cool it by exchanging heat with the adsorbent medium. The air absorbed by the cooling fan 10 can be ambient air or air from inside the machine. Figure 1 As shown, the cooling fan 10 can be located upstream of the compressor 5. Outside air first passes through the cooling fan 10 and then is blown to the compressor 5. This arrangement can increase the airflow velocity within the dehumidification channel where the compressor 5 and cooling fan 10 are located, thereby improving the desorption and regeneration efficiency of the adsorption medium. Figure 2 As shown, the cooling fan 10 can also be located downstream of the compressor 5. When the cooling fan 10 is turned on, a negative pressure is formed in the dehumidification channel where the compressor 5 and the cooling fan 10 are located. Outside air is drawn into the dehumidification channel and then blown towards the compressor 5. The dehumidification channel can be connected to the inside of the machine body through the switch 11. Since the cooling fan 10 is located downstream of the compressor 5, the hot and humid gas inside the machine body can be prevented from corroding the cooling fan 10, thus extending the service life of the cooling fan 10.

[0041] In some embodiments, the heat pump circulation device further includes a second evaporator 9. Air that has undergone heat exchange with the compressor 5 is cooled by the second evaporator 9 and then circulated again by the cooling fan 10, thereby achieving airflow circulation and reducing noise from outside air entering the machine. The second evaporator 9 is located within the dehumidification channel where the compressor 5 and the cooling fan 10 are located. When the humidity inside the machine is high, the switch 11 between the dehumidification channel and the machine interior is turned on, allowing airflow exchange between the dehumidification channel and the machine interior. The cooling fan 10 of the adsorption dehumidification device absorbs heat from the compressor 5 using outside cooling air, cooling the compressor 5 and desorbing and regenerating the adsorption medium. The humid and hot air inside the machine enters the dehumidification channel where the second evaporator 9 is located via the switch 11, and the second evaporator 9 dehumidifies the humid and hot air inside the machine, accelerating the dehumidification efficiency. Optionally, the second evaporator 9 is connected in parallel with the first evaporator 4. One end of the second evaporator 9 is connected to the expansion valve 7, and the other end is connected to the compressor 5. This allows the second evaporator 9 to be connected in parallel within the circulation loop formed by the compressor 5, condenser 3, and first evaporator 4, sharing a single compressor 5 and condenser 3. This reduces the number of components, eliminates the need for additional circulation loops, lowers system complexity, saves manufacturing costs, and reduces equipment failure rates. Understandably, the water condensed by the first evaporator 4 and second evaporator 9 is discharged from the machine body via a drain pump or gravity.

[0042] To prevent lint from affecting the normal operation of the first evaporator 4, a filter 6 may optionally be installed between the receiving tank 1 and the first evaporator 4. The filter 6 is used to filter lint from the hot and humid air discharged from the receiving tank 1. The filter 6 may have a mesh structure to minimize obstruction of airflow.

[0043] This embodiment also provides a clothes drying method, which uses the above-mentioned clothes dryer to dry clothes, including the following steps: air is heated by condenser 3 and blown into container 1 under the action of circulating fan 2 to dry the clothes to be dried in container 1; the hot and humid air discharged from container 1 is cooled by first evaporator 4; and the air cooled by first evaporator 4 is dehumidified by adsorption dehumidification device.

[0044] Specifically, air is heated by condenser 3 to form high-temperature dry air. This high-temperature dry air is blown into the container 1 containing clothes to be dried by the circulating fan 2. The high-temperature dry air exchanges heat with the wet clothes and absorbs moisture to form humid air. The humid air discharged from the container 1 exchanges heat with the first evaporator 4 to cool down, achieving primary dehumidification of the humid air. The humid air after primary dehumidification undergoes secondary dehumidification under the adsorption of the adsorption dehumidification device. The dry air is then heated again by condenser 3 to form a circulating airflow, which circulates and dries the clothes in the container 1. By combining heat pump drying with adsorption dehumidification, the drying efficiency of the clothes is improved, the drying time is reduced, the air dehumidification effect is enhanced, energy consumption and costs are reduced, the goal of high-efficiency dehumidification is achieved, and the user experience is improved.

[0045] In some embodiments, when the humidity inside the machine is less than the preset humidity, the switch 11 between the dehumidification channel and the inside of the machine is closed, and the adsorption dehumidification device uses external cooling air for regeneration and cooling. When the humidity inside the machine is greater than or equal to the preset humidity, the switch 11 between the dehumidification channel and the inside of the machine is opened, and the adsorption dehumidification device uses external cooling air for regeneration and cooling, dehumidifying the hot and humid air inside the machine. It can be understood that the dehumidification channel refers to the air duct where the cooling fan 10 and the second evaporator 9 are located, and the switch 11 is used to connect the dehumidification channel and the inside of the machine. The humidity inside the machine is detected by a humidity sensor, and the preset humidity can be 50%. When the humidity inside the machine is less than 50%, the switch 11 between the dehumidification channel and the inside of the machine is closed, and there is no airflow exchange between the dehumidification channel and the inside of the machine. The cooling fan 10 absorbs cooling air from the outside, and the cooling air absorbs heat from the compressor 5. After desorption and regeneration of the adsorption medium, it is dehumidified by the second evaporator 9 and then blown out of the machine. When the humidity inside the unit is greater than or equal to 50%, switch 11 between the dehumidification channel and the unit's interior is turned on, allowing airflow exchange between them. The cooling fan 10 of the adsorption dehumidification device absorbs heat from the compressor 5 using external cooling air, cooling the compressor 5 and desorbing and regenerating the adsorption medium. The humid and hot air inside the unit enters the dehumidification channel where the second evaporator 9 is located via switch 11, where the second evaporator 9 dehumidifies the humid and hot air inside the unit, accelerating the dehumidification efficiency. The preset humidity can also be 40% or 60%, etc., and is not limited here.

[0046] Optionally, when the drying time is less than the preset time, the dehumidification speed of the adsorption dehumidification device is greater than the preset dehumidification speed; when the drying time is greater than or equal to the preset time, the dehumidification speed of the adsorption dehumidification device is less than or equal to the preset dehumidification speed. Users can set the preset time according to the drying time of different types of clothing. For example, cotton clothing requires approximately 90 minutes to dry, so the preset time could be 60 minutes. When the drying time is less than 60 minutes, the moisture content of the circulating airflow is higher, and the dehumidification speed of the adsorption dehumidification device is greater than the preset dehumidification speed. For example, the operating speed of the conveyor 8 can be increased to accelerate the adsorption dehumidification speed. When the drying time is greater than or equal to 60 minutes, the moisture content of the circulating airflow is lower, and the dehumidification speed of the adsorption dehumidification device is less than or equal to the preset dehumidification speed. For example, the operating speed of the conveyor 8 can be decreased to slow down the adsorption dehumidification speed. The operating speed of the conveyor 8 can be adjusted according to the speed of the motor driving the conveyor 8, or it can be adjusted by changing the resistance experienced by the conveyor 8.

[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A clothes dryer, characterized in that, include: A container (1) is used to hold clothes to be dried; The heat pump circulation device includes a circulating fan (2) and a condenser (3), a first evaporator (4) and a compressor (5) constituting the circulation. Air is heated by the condenser (3) and blown into the container (1) by the circulating fan (2) to dry the clothes to be dried in the container (1). The hot and humid air discharged from the container (1) is cooled by the first evaporator (4) and then reheated by the condenser (3). An adsorption dehumidification device is installed between the first evaporator (4) and the condenser (3). The air cooled by the first evaporator (4) is adsorbed and dehumidified by the adsorption dehumidification device.

2. The clothes dryer according to claim 1, characterized in that, The adsorption dehumidification device includes a conveying component (8) and an adsorbent disposed on the conveying component (8). The adsorbent stores an adsorption medium. The conveying component (8) is used to convey the adsorbent between the first evaporator (4) and the condenser (3).

3. The clothes dryer according to claim 2, characterized in that, The conveying component (8) includes an adsorption zone and a regeneration zone. The adsorption medium located in the adsorption zone can adsorb water vapor, and the adsorption medium located in the regeneration zone can exchange heat with the compressor (5) for desorption and regeneration.

4. The clothes dryer according to claim 3, characterized in that, The heat pump circulation device further includes a cooling fan (10) for blowing air to the compressor (5) so that the compressor (5) exchanges heat with the adsorption medium for cooling.

5. The clothes dryer according to claim 4, characterized in that, The heat pump circulation device also includes a second evaporator (9), through which the air after heat exchange by the compressor (5) is cooled so that it can be blown again by the cooling fan (10).

6. The clothes dryer according to claim 5, characterized in that, The second evaporator (9) is connected in parallel with the first evaporator (4).

7. The clothes dryer according to claim 1, characterized in that, A filter (6) is provided between the container (1) and the first evaporator (4), and the filter (6) is used to filter out lint from the hot and humid air discharged from the container (1).

8. A method for drying clothes, characterized in that, The method of drying clothes using the dryer as described in any one of claims 1-7 includes the following steps: air is heated by a condenser (3) and blown into a container (1) by a circulating fan (2) to dry the clothes to be dried in the container (1); the hot and humid air discharged from the container (1) is cooled by a first evaporator (4); and the air cooled by the first evaporator (4) is dehumidified by an adsorption dehumidification device.

9. The drying method according to claim 8, characterized in that, When the humidity inside the machine is less than the preset humidity, the switch (11) between the dehumidification channel and the inside of the machine is closed, and the adsorption dehumidification device uses external cooling air for regeneration cooling; when the humidity inside the machine is greater than or equal to the preset humidity, the switch (11) between the dehumidification channel and the inside of the machine is opened, and the adsorption dehumidification device uses external cooling air for regeneration cooling and dehumidifies the hot and humid air inside the machine.

10. The drying method according to claim 8, characterized in that, When the drying time is less than the preset time, the dehumidification speed of the adsorption dehumidification device is greater than the preset dehumidification speed; when the drying time is greater than or equal to the preset time, the dehumidification speed of the adsorption dehumidification device is less than or equal to the preset dehumidification speed.

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