A drying system, a laundry treating apparatus, and a drying method

Abstract

The application discloses a drying system, a clothes treatment device and a drying method. The drying system comprises a first drying subsystem and a switching device. The first drying subsystem comprises a compressor, a condenser and a first evaporator arranged in a refrigerant circulation path. The refrigerant circulation path comprises a first refrigerant path and a second refrigerant path. In the first refrigerant path, the condenser is arranged upstream of the first evaporator. In the second refrigerant path, the condenser is arranged downstream of the first evaporator. The switching device is used for connecting the first refrigerant path to the compressor to make the first evaporator absorb heat, or connecting the second refrigerant path to the compressor to make the first evaporator release heat. The drying system disclosed by the application can remove residual water and is cleaner and more sanitary.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of clothing processing technology, and in particular to a drying system, clothing processing equipment, and drying method. Background Technology

[0002] The drying system provides high-temperature, dry air that circulates within the ductwork, passing over the items to be dried (such as clothes) to dry them. However, residual water remains in the ductwork after drying, which can easily lead to bacterial growth. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a drying system, clothing processing equipment, and drying method. This application achieves this through the following technical solution:

[0004] In a first aspect, embodiments of this application provide a drying system, including a first drying subsystem and a switching device. The first drying subsystem includes a compressor, a condenser, and a first evaporator disposed in a refrigerant circulation path. The refrigerant circulation path includes a first refrigerant path and a second refrigerant path. In the first refrigerant path, the condenser is disposed upstream of the first evaporator. In the second refrigerant path, the condenser is disposed downstream of the first evaporator. The switching device is used to connect the first refrigerant path to the compressor so that the first evaporator absorbs heat; or, to connect the second refrigerant path to the compressor so that the first evaporator releases heat.

[0005] The drying system provided in this application embodiment includes a first refrigerant path and a second refrigerant path in its refrigerant circulation path. A switching device connects the compressor to the first refrigerant circulation path, where the refrigerant first releases heat through the condenser and then absorbs heat through the first evaporator. Alternatively, the switching device can connect the compressor to the second refrigerant circulation path, where the refrigerant first releases heat through the first evaporator and then absorbs heat through the condenser, thus interchanges the functions of the first evaporator and condenser. The heat released by the first evaporator vaporizes residual water on its surface, preventing bacterial growth and odors, resulting in a cleaner and more hygienic system and improved user experience. In this application embodiment, the drying system, by providing a first refrigerant path, a second refrigerant path, and a switching device, connects the compressor to one of the first or second refrigerant paths, allowing the first evaporator and condenser to interchange functions. When the refrigerant flows along the second refrigerant path, the first evaporator can release heat to dry residual water, preventing bacterial growth and odors.

[0006] In one possible implementation of this application, the drying system further includes a second drying subsystem, which includes a moisture absorption and dehumidification device and a regeneration device disposed in the second circulating air duct, and both the moisture absorption and dehumidification device and the first evaporator are disposed in the first circulating air duct.

[0007] Here, the second drying subsystem can be combined with the first drying subsystem to assist in drying. The dehumidification device can dehumidify the drying air by adsorbing it, and can also use the adsorption heat to heat the drying air, thereby improving the drying efficiency. When the switching device connects the compressor to the second refrigerant circulation path, the heat released by the first evaporator can also dehumidify the dehumidification device and preheat it to facilitate subsequent drying operations.

[0008] In one possible implementation of this application, the regeneration device includes a second evaporator disposed in the refrigerant circulation path, and a condenser disposed upstream of the second evaporator in the first refrigerant path; a condenser disposed downstream of the second evaporator in the second refrigerant path; when the first refrigerant path is connected to the compressor, the second evaporator absorbs heat; when the second refrigerant path is connected to the compressor, the second evaporator releases heat.

[0009] Here, the compressor is connected to one of the first and second refrigerant paths by a switching device, so that the functions of the second evaporator and condenser can be interchanged. When the refrigerant flows along the second refrigerant path, the second evaporator can release heat to remove residual water and dry the dehumidification device, preventing bacterial growth and odor.

[0010] In one possible implementation of this application, the second evaporator is provided with a moisture-absorbing coating, which is used for dehumidifying the desorbed air in the second circulating air duct.

[0011] Here, by setting a moisture-absorbing coating, when the refrigerant flows along the first refrigerant path, the moisture-absorbing coating can adsorb water vapor in the desorption air, thereby improving the dehumidification capacity of the second evaporator; when the refrigerant flows along the second refrigerant path, the heat released by the second evaporator can desorb the water vapor in the moisture-absorbing coating and regenerate it.

[0012] In one possible implementation of this application, the first evaporator and the second evaporator are connected in series in the refrigerant circulation path, and the first evaporator is located upstream of the second evaporator along the first refrigerant path.

[0013] Here, the second evaporator and the first evaporator are connected in series in the refrigerant circulation path. The refrigerant flows sequentially in the first evaporator and the second evaporator to remove residual water in the first circulation duct and the second circulation duct respectively. The pipeline structure is relatively simple and easy to lay out.

[0014] In one possible implementation of this application, the first evaporator and the second evaporator are connected in parallel in the refrigerant circulation path.

[0015] Here, by connecting the second drying subsystem and the first drying subsystem in parallel in the refrigerant circulation path, the mutual interference between the first drying subsystem and the second drying subsystem can be reduced, the refrigerant circulation path can be optimized, and it is easy to adjust to meet different operational needs.

[0016] In one possible implementation of this application, a switching device is disposed between the compressor, the first refrigerant path, and the second refrigerant path; the switching device is a four-way valve, which is connected to both ends of the compressor through a first flow channel and a second flow channel, and to the condenser and the first evaporator through a third flow channel and a fourth flow channel, respectively; the four-way valve is configured to connect the first flow channel and the third flow channel, and connect the second flow channel and the fourth flow channel, so that the compressor is connected to the first refrigerant path; or, to connect the first flow channel and the fourth flow channel, and connect the second flow channel and the third flow channel, so that the compressor is connected to the second refrigerant path.

[0017] Here, by setting a four-way valve, different flow channel connection methods can be switched, thereby realizing the switching between the first refrigerant path and the second refrigerant path. Only one flow channel system needs to be set up, which is simple in structure and easy to implement.

[0018] In one possible implementation of this application, the drying system further includes a throttling device, with the first evaporator and the second evaporator disposed downstream of the throttling device along the first refrigerant path.

[0019] Here, by setting a throttling device in the refrigerant circulation path, the refrigerant can be depressurized and cooled to meet the usage requirements of the first evaporator and the second evaporator, and to adapt to diverse drying and residual water removal needs.

[0020] In one possible implementation of this application, the first drying subsystem further includes a first fan for providing circulating power for the drying air in the first circulating air duct; the second drying subsystem further includes a second fan for providing circulating power for the desorption air in the second circulating air duct.

[0021] Here, by setting up a first fan and a second fan, the flow rates of the drying air and the desorption air can be increased respectively. When the refrigerant flows along the first refrigerant path, the water vapor exchange efficiency between the drying air and the object to be dried, as well as the water vapor exchange efficiency between the desorption air and the moisture absorption and dehumidification device, can be improved, thereby increasing the drying efficiency. When the refrigerant flows along the second refrigerant path, the flow rates of the high-temperature drying air and the desorption air can be provided to accelerate the removal of residual water in the first and second circulating air ducts.

[0022] In one possible implementation of this application, the drying system further includes a drying cylinder for holding the object to be dried, and the first evaporator, the moisture absorption and dehumidification device, the condenser and the drying cylinder are arranged sequentially along the first circulating air duct.

[0023] Here, a drying drum is set up to hold the items to be dried. The drying air is dehumidified by the first evaporator, dehumidified a second time by the moisture absorption and dehumidification device, and then heated by the condenser to become high-temperature and high-dryness drying air, so as to quickly dry the items to be dried.

[0024] Secondly, embodiments of this application provide a garment processing device, including the drying system of any one of the first aspects.

[0025] The clothing processing device provided in this application embodiment is provided with a first refrigerant path, a second refrigerant path, and a switching device. The switching device connects the compressor to one of the first and second refrigerant paths, so that the functions of the first evaporator and the condenser can be interchanged. When the refrigerant flows along the second refrigerant path, the first evaporator can release heat to dry the residual water, preventing bacterial growth and odor.

[0026] Thirdly, embodiments of this application provide a drying method for a clothing processing device. The clothing processing device includes a compressor, a switching device, a first refrigerant path, and a second refrigerant path. In the first refrigerant path, a condenser is disposed upstream of a first evaporator; in the second refrigerant path, a condenser is disposed downstream of the first evaporator, and the first evaporator is disposed in a first circulating air duct for drying. The drying method includes obtaining an operating mode of the clothing processing device, the operating mode including a first mode for drying the item to be dried and a second mode for drying the clothing processing device; when the clothing processing device is switched to the first mode, the switching device is controlled to connect the compressor to the first refrigerant path; when the clothing processing device is switched to the second mode, the switching device is controlled to connect the compressor to the second refrigerant path.

[0027] The drying method provided in this application embodiment connects the compressor to one of the first refrigerant path and the second refrigerant path through a switching device, and switches the drying system to a first mode or a second mode. In the first mode and the second mode, the functions of the first evaporator and the condenser are interchanged. When the refrigerant flows along the second refrigerant path, the first evaporator can release heat to remove residual water and dry the moisture-absorbing and dehumidifying device to prevent bacterial growth and odor. Attached Figure Description

[0028] Figure 1 This is a schematic diagram showing the connection of the first drying subsystem with respect to the first refrigerant path in the drying system provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram showing the connection of the first drying subsystem in the drying system provided in the embodiments of this application with respect to the second refrigerant path;

[0030] Figure 3 This is a schematic diagram of the structure of the first drying subsystem and the second drying subsystem in the drying system provided in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram showing the connection of the second drying subsystem in the drying system provided in the embodiments of this application with respect to the first refrigerant path;

[0032] Figure 5 This is a schematic diagram showing the connection of the second drying subsystem with respect to the second refrigerant path in the drying system provided in the embodiments of this application;

[0033] Figure 6 A schematic diagram showing the connection of the first evaporator and the second evaporator in series in the drying system provided in the embodiments of this application;

[0034] Figure 7 A schematic diagram showing the parallel connection of the first evaporator and the second evaporator in the drying system provided in the embodiments of this application;

[0035] Figure 8 This is a schematic diagram of the connection of the first refrigerant path in the drying system provided in the embodiments of this application;

[0036] Figure 9 This is a schematic diagram of the connection of the second refrigerant path in the drying system provided in the embodiments of this application;

[0037] Figure 10 A flowchart of a drying method provided in an embodiment of this application.

[0038] Figure label:

[0039] 100 - First drying subsystem; 110 - Compressor; 120 - Condenser; 130 - First evaporator; 200 - Second drying subsystem; 210 - Moisture absorption and dehumidification device; 220 - Second evaporator; F10 - First circulating air duct; F20 - Second circulating air duct; 300 - Switching device; 400 - First throttling device; 500 - Second throttling device; 600 - Drying drum; M10 - First refrigerant path; M20 - Second refrigerant path; L10 - First flow channel; L20 - Second flow channel; L30 - Third flow channel; L40 - Fourth flow channel. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0041] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0042] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0043] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0046] This application provides a drying system that can be used in clothing processing equipment, such as a dryer or washer-dryer combo. The drying system provides high-temperature, dry air that circulates in an air duct and passes over the items to be dried (e.g., clothing), thereby drying the items.

[0047] In some technical solutions, circulating air passes through an evaporator, which absorbs heat and condenses the water vapor in the circulating air, thus drying the air. After drying, residual water often remains in the air duct corresponding to the evaporator and on the outside of the evaporator, which can easily lead to bacterial growth and odors. In solutions with moisture absorption and dehumidification devices, residual moisture can also remain in the devices, affecting subsequent drying efficiency.

[0048] To solve the above technical problems, the drying system is equipped with a first refrigerant path, a second refrigerant path, and a switching device. The switching device connects the compressor to one of the first and second refrigerant paths, allowing the functions of the first evaporator and condenser to be interchanged. When the refrigerant flows along the second refrigerant path, the first evaporator can release heat to dry the residual water, preventing bacterial growth and odor.

[0049] Reference Figure 1 , Figure 2 and Figure 3 The drying system of this application embodiment includes a first drying subsystem 100 and a switching device 300. The first drying subsystem 100 includes a compressor 110, a condenser 120, and a first evaporator 130 disposed in the refrigerant circulation path. The refrigerant circulation path includes a first refrigerant path M10 and a second refrigerant path M20. In the first refrigerant path M10, the condenser 120 is disposed upstream of the first evaporator 130. In the second refrigerant path M20, the condenser 120 is disposed downstream of the first evaporator 130. The first evaporator 130 is disposed in a first circulating air duct F10, and the drying air in the first circulating air duct F10 is used to dry the object to be dried. The switching device 300 is used to connect the first refrigerant path M10 to the compressor 110 so that the first evaporator 130 absorbs heat; or, to connect the second refrigerant path M20 to the compressor 110 so that the first evaporator 130 releases heat.

[0050] In this embodiment of the application, the first drying subsystem 100 includes a compressor 110, which can be a piston type, scroll type or screw type, etc. The compressor 110 can drive the refrigerant to flow in the first refrigerant path M10 or the second refrigerant path M20.

[0051] In this embodiment, when the refrigerant flows along the first refrigerant path M10, since the condenser 120 is located upstream of the first evaporator 130, the refrigerant first passes through the condenser 120 and releases heat. The condenser 120 can use the heat released by the refrigerant to heat the drying air in the first circulating air duct F10. The refrigerant then passes through the first evaporator 130 and absorbs heat. The first evaporator 130 can use the heat absorbed by the refrigerant to cool the drying air, so that the water vapor in the drying air is condensed and removed. The drying air passing through the first evaporator 130 and the condenser 120 becomes a high-temperature dry state, which can be used to dry the object to be dried.

[0052] In this embodiment, when the refrigerant flows along the second refrigerant path M20, since the first evaporator 130 is located upstream of the condenser 120, the refrigerant first passes through the first evaporator 130 and releases heat. The first evaporator 130 can use the heat released by the refrigerant to heat itself and the first circulating air duct F10, thereby vaporizing and removing residual water on the surface of the first evaporator 130 and in the first circulating air duct F10, especially the part of the first circulating air duct F10 corresponding to the first evaporator 130. The refrigerant then passes through the condenser 120 and absorbs heat so that it can enter the compressor 110 to complete the refrigerant circulation.

[0053] In this embodiment of the application, drying air flows in the circulating air duct. The drying air can flow sequentially between the first evaporator 130, the condenser 120 and the object to be dried to achieve drying air circulation. The high-temperature drying air passes through the object to be dried and exchanges heat and moisture with the object to dry it.

[0054] In this embodiment, the switching device 300 can connect the first refrigerant path M10 to the compressor 110 so that the first evaporator 130 absorbs heat to dehumidify the drying air, thereby enabling the drying system to operate in the first mode of drying the object to be dried; or, the switching device 300 can connect the second refrigerant path M20 to the compressor 110 so that the first evaporator 130 releases heat to dry the corresponding position of the first circulating air duct F10, thereby enabling the drying system to operate in the second mode of removing residual water.

[0055] The technical solution provided in this application embodiment includes a first refrigerant path M10 and a second refrigerant path M20. By setting a switching device 300, the switching device 300 connects the compressor 110 to the first refrigerant path. The refrigerant first releases heat through the condenser 120 and then absorbs heat through the first evaporator 130, so that the drying air in the first circulating air duct F10 can be dried by the first evaporator 130 and then heated by the condenser 120 to form high-temperature drying air, which is used to dry the object to be dried.

[0056] In addition, the switching device 300 can also connect the compressor 110 to the second refrigerant circulation path. The refrigerant first releases heat through the first evaporator 130 and then absorbs heat through the condenser 120, so that the functions of the first evaporator 130 and the condenser 120 are interchanged. The heat released by the first evaporator 130 can vaporize the residual water on its outer surface and in the first circulation duct F10, thereby preventing bacterial growth and odor, making it cleaner and more hygienic, and improving the user experience.

[0057] The drying system of this application embodiment sets up a first refrigerant path M10, a second refrigerant path M20 and a switching device 300. The switching device 300 connects the compressor 110 to one of the first refrigerant path M10 and the second refrigerant path M20, so that the functions of the first evaporator 130 and the condenser 120 can be interchanged. When the refrigerant flows along the second refrigerant path M20, the first evaporator 130 can release heat to dry the residual water, preventing bacterial growth and odor.

[0058] To improve regeneration efficiency, refer to Figure 3 , Figure 4 and Figure 5 In some possible embodiments of this application, the drying system further includes a second drying subsystem 200, which includes a moisture absorption and dehumidification device 210 and a regeneration device (which may include a second evaporator 220) disposed in the second circulating air duct F20, and the moisture absorption and dehumidification device 210 is also disposed in the first circulating air duct F10.

[0059] In this embodiment, the dehumidification device 210 can be a dehumidification turntable, which is a honeycomb or corrugated turntable carrying a desiccant. It can adsorb and desorb absorbed water vapor to achieve repeated desorption and regeneration. In some embodiments, the dehumidification turntable may include an inorganic / organic fiber carrier (such as ceramics, glass fibers, MOFs, COFs, cordierite, etc.). The fiber carrier is coated with a desiccant such as a molecular sieve, and the desiccant is evenly distributed between the fiber carriers and on the surface of the fiber carrier to achieve the adsorption of moisture in the airflow. The desiccant can be zeolite, modified / synthetic zeolite, molecular sieves (including but not limited to single-crystal molecular sieves or mixed-crystal molecular sieves such as A-type molecular sieves, X / Y-type molecular sieves, ZSM molecular sieves, Beta molecular sieves, etc.), polymeric desiccant, alkali metal aluminosilicates (13X molecular sieves), lithium chloride, silica gel, modified silica gel, activated alumina, and other materials with hygroscopic properties.

[0060] In this embodiment of the application, the dehumidification device 210 may also include a rotating device. For example, it may include a rotary motor and a rotating shaft. The rotating shaft is connected to the output end of the rotary motor and to the dehumidification turntable (for example, the rotating shaft is connected to the center of the dehumidification turntable) and drives the dehumidification turntable to rotate around the rotating shaft.

[0061] In this embodiment, the dehumidification device 210 can be repeatedly dehumidified and regenerated by rotating the dehumidification turntable. Moreover, dehumidification and regeneration are performed in two separate areas, which allows the desorption air and drying air to circulate independently. This enables the dehumidification device 210 to be regenerated while clothes are being dried, which helps to improve the drying speed.

[0062] In some embodiments, the moisture absorption and dehumidification device 210 includes a breathable porous structure made of zeolite, lithium chloride, silica gel, modified silica gel, or molecular sieve. This allows for easy and effective adsorption and desorption of moisture. The moisture absorption and dehumidification device 210 is reusable and has low cost.

[0063] In this embodiment, desorbed air circulates in the second circulating air duct F20. The desorbed air flows through the regeneration area of ​​the dehumidification disc, desorbing the water vapor on the dehumidification disc and regenerating it. The desorbed air is then dehydrated by the regeneration device, becoming dry desorbed air.

[0064] The technical solution provided in this application embodiment sets up a second drying subsystem 200 that can be combined with the first drying subsystem 100 to assist in drying. The dehumidification device 210 can dehumidify the drying air by adsorbing it, and can also use the adsorption heat to heat the drying air, thereby improving the drying efficiency. When the switching device 300 connects the compressor 110 to the second refrigerant circulation path, the heat released by the first evaporator 130 can also dehumidify the dehumidification device 210 and preheat the dehumidification device 210 to facilitate subsequent drying operations.

[0065] To facilitate drying by the moisture absorption and dehumidification device 210, refer to Figure 3 , Figure 4 and Figure 5 In some possible embodiments of this application, the regeneration device includes a second evaporator 220, which is disposed in the refrigerant circulation path. In the first refrigerant path M10, the condenser 120 is disposed upstream of the second evaporator 220; in the second refrigerant path M20, the condenser 120 is disposed downstream of the second evaporator 220; when the first refrigerant path M10 is connected to the compressor 110, the second evaporator 220 absorbs heat; when the second refrigerant path M20 is connected to the compressor 110, the second evaporator 220 releases heat.

[0066] In this embodiment, when the refrigerant flows along the first refrigerant path M10, since the condenser 120 is located upstream of the second evaporator 220, the refrigerant first passes through the condenser 120 and releases heat; then the refrigerant passes through the second evaporator 220 and absorbs heat. The second evaporator 220 can use the heat absorbed by the refrigerant to cool the desorption air circulating in the second circulating air duct F20, so that the water vapor in the desorption air is condensed and removed. The desorption air passing through the second evaporator 220 becomes dry and can be used for the regeneration of the dehumidification device 210.

[0067] In this embodiment, when the refrigerant flows along the second refrigerant path M20, since the second evaporator 220 is located upstream of the condenser 120, the refrigerant first passes through the second evaporator 220 and releases heat. The second evaporator 220 can use the heat released by the refrigerant to heat the second circulating air duct F20, thereby vaporizing and removing the residual water on the outer surface of the second evaporator 220 and the second circulating air duct F20. It can also remove the water vapor adsorbed on the moisture absorption and dehumidification device 210 by heating, so that the moisture absorption and dehumidification device 210 can be kept in a dry state, which is convenient for the reuse of the drying system.

[0068] In this embodiment of the application, when the first refrigerant path M10 is connected to the compressor 110, the second evaporator 220 absorbs heat to dehumidify the desorbed air in the second circulating air duct F20; or, when the second refrigerant path M20 is connected to the compressor 110, the second evaporator 220 releases heat for drying the moisture absorption and dehumidification device 210.

[0069] The technical solution provided in this application embodiment connects the compressor 110 to one of the first refrigerant path M10 and the second refrigerant path M20 through the switching device 300, so that the functions of the second evaporator 220 and the condenser 120 can be interchanged. When the refrigerant flows along the second refrigerant path M20, the second evaporator 220 can release heat to remove residual water and dry the moisture absorption and dehumidification device 210, preventing bacterial growth and odor.

[0070] It should be noted that both the second evaporator 220 and the first evaporator 130 are located in the refrigerant circulation path, and the second evaporator 220 and the first evaporator 130 are connected in series or in parallel in the refrigerant circulation path.

[0071] In some possible embodiments of this application, the second evaporator 220 is provided with a moisture-absorbing coating, which is used for dehumidifying the desorbed air in the second circulating air duct F20.

[0072] In this embodiment, the adsorption coating can be a desiccant coating, and its material can be silica gel molecular sieve, calcium chloride, etc. The second evaporator 220 may include heat exchange tubes and heat exchange fins, and at least one of the heat exchange tubes and heat exchange fins is coated with a moisture-absorbing coating.

[0073] The technical solution provided in this application embodiment, by setting a moisture-absorbing coating, can adsorb water vapor in the desorption air when the refrigerant flows along the first refrigerant path M10, thereby improving the dehumidification capacity of the second evaporator 220; when the refrigerant flows along the second refrigerant path M20, the heat released by the second evaporator 220 can desorb the water vapor in the moisture-absorbing coating and regenerate it.

[0074] To simplify the structure, refer to Figure 6In some possible embodiments of this application, the first evaporator 130 and the second evaporator 220 are connected in series in the refrigerant circulation path, and along the first refrigerant path M10, the first evaporator 130 is located upstream of the second evaporator 220.

[0075] In this embodiment of the application, the first evaporator 130 and the second evaporator 220 are connected in series in the refrigerant circulation path, that is, the refrigerant first passes through one of the evaporators and then through the other evaporator during the refrigerant circulation process.

[0076] In one example, along the first refrigerant path M10, the first evaporator 130 is located upstream of the second evaporator 220. The refrigerant first passes through the first evaporator 130 to remove moisture from the drying air, and then passes through the second evaporator 220 to remove moisture from the desorption air. It can be understood that along the second refrigerant path M20, the refrigerant first passes through the second evaporator 220 to remove residual water from the second circulating air duct F20, and then passes through the first evaporator 130 to remove residual water from the first circulating air duct F10.

[0077] In another example, along the first refrigerant path M10, the first evaporator 130 is located downstream of the second evaporator 220. The refrigerant first passes through the second evaporator 220 to remove moisture from the desorption air, and then passes through the first evaporator 130 to remove moisture from the drying air. It can be understood that along the second refrigerant path M20, the refrigerant first passes through the first evaporator 130 to remove residual water from the first circulating air duct F10, and then passes through the second evaporator 220 to remove residual water from the second circulating air duct F20.

[0078] The technical solution provided in this application embodiment connects the second evaporator 220 and the first evaporator 130 in series in the refrigerant circulation path. The refrigerant flows sequentially in the first evaporator 130 and the second evaporator 220 to remove residual water from the first circulation duct F10 and the second circulation duct F20 respectively. The pipeline structure is relatively simple and easy to lay out.

[0079] To optimize the refrigerant circulation path, refer to Figure 7 In some possible embodiments of this application, the first evaporator 130 and the second evaporator 220 are connected in parallel in the refrigerant circulation path.

[0080] In this embodiment, the first evaporator 130 and the second evaporator 220 are arranged in parallel in the refrigerant circulation path, that is, the two are connected to the compressor 110 through different pipelines, and the refrigerant can be split to pass through the first evaporator 130 and the second evaporator 220 respectively.

[0081] In this embodiment of the application, a shut-off valve may also be provided on the inlet side of the first evaporator 130 and the second evaporator 220. By opening or closing the shut-off valve, the refrigerant can pass through only one of the first evaporator 130 and the second evaporator 220, or pass through the first evaporator 130 and the second evaporator 220 respectively.

[0082] The technical solution provided in this application embodiment reduces the mutual interference between the first drying subsystem 100 and the second drying subsystem 200 by setting the second drying subsystem 200 and the first drying subsystem 100 in parallel in the refrigerant circulation path, optimizes the refrigerant circulation path, and facilitates adjustment to adapt to different operational needs.

[0083] In this embodiment, the first refrigerant path M10 and the second refrigerant path M20 can be two different sets of pipes. When the refrigerant passes through one path, the other path is idle. Alternatively, the first refrigerant path M10 and the second refrigerant path M20 can share a set of pipes, and different paths can be achieved by adjusting the flow direction, which makes the structure simpler.

[0084] To simplify the structure and facilitate the switching between the first refrigerant path M10 and the second refrigerant path M20, refer to Figure 8 and Figure 9 In some possible embodiments of this application, the switching device 300 is disposed between the compressor 110, the first refrigerant path M10, and the second refrigerant path M20. The switching device 300 can be a four-way valve, which connects to both ends of the compressor 110 via a first flow channel L10 and a second flow channel L20, respectively, and connects to the condenser 120 and the first evaporator 130 via a third flow channel L30 and a fourth flow channel L40, respectively. The four-way valve is configured to connect the first flow channel L10 and the third flow channel L30, and connect the second flow channel L20 and the fourth flow channel L40, so that the compressor 110 is connected to the first refrigerant path M10; or, to connect the first flow channel L10 and the fourth flow channel L40, and connect the second flow channel L20 and the third flow channel L30, so that the compressor 110 is connected to the second refrigerant path M20.

[0085] In this embodiment of the application, when the drying system is required to dry the object to be dried, the first flow channel L10 and the third flow channel L30 are connected by a four-way valve, and the second flow channel L20 and the fourth flow channel L40 are connected. The refrigerant passes through the compressor 110, the condenser 120 and the first evaporator 130 (and / or the second evaporator 220) in sequence, and then flows back to the compressor 110.

[0086] In this embodiment of the application, when the drying system is required to remove residual water, the first flow channel L10 and the fourth flow channel L40 are connected by a four-way valve, and the second flow channel L20 and the third flow channel L30 are connected. The refrigerant passes through the compressor 110, the first evaporator 130 (and / or the second evaporator 220) and the condenser 120 in sequence, and then flows back to the compressor 110.

[0087] The technical solution provided in this application embodiment, by setting a four-way valve, can switch different flow channel connection methods, thereby realizing the switching of the first refrigerant path M10 and the second refrigerant path M20, and only one flow channel system needs to be set up, which is simple in structure and easy to implement.

[0088] To adapt to diverse drying and residual water removal needs, refer to Figure 7 , Figure 8 and Figure 9 In some possible embodiments of this application, the drying system further includes a throttling device, and the first evaporator 130 and the second evaporator 220 are disposed downstream of the throttling device along the first refrigerant path M10.

[0089] In this embodiment of the application, the throttling device may be one or more, as shown in the reference. Figure 4 , Figure 5 and Figure 6 When the first evaporator 130 and the second evaporator 220 are connected in series, a first throttling device 400 and a second throttling device 500 are respectively provided, wherein the first throttling device 400 is provided for the first evaporator 130 and the second throttling device 500 is provided for the second evaporator 220.

[0090] Reference Figure 7 When the first evaporator 130 and the second evaporator 220 are connected in parallel, only the first throttling device 400 can be provided, and the refrigerant path corresponding to the first evaporator 130 and the second evaporator 220 is split downstream of the first throttling device 400 so that the first throttling device 400 can act on the first evaporator 130 and the second evaporator 220 respectively.

[0091] In this embodiment, the first throttling device 400 and the second throttling device 500 can have the same or different structures. The first throttling device 400 and the second throttling device 500 can be needle valves, ball valves, butterfly valves, nozzle valves, etc. For example, the first throttling device 400 and the second throttling device 500 can be electronic expansion valves, or they can be capillary tubes. The second throttling device 500 disperses the refrigerant by changing the throttling area to reduce pressure and temperature. The first throttling device 400 and / or the second throttling device 500 can be correspondingly provided on the inlet side of the first evaporator 130 and / or the second evaporator 220.

[0092] In one example, along the first refrigerant path M10, the compressor 110, condenser 120, second throttling device 500, second evaporator 220 and first evaporator 130 are arranged in sequence. Correspondingly, along the second refrigerant path M20, the compressor 110, first evaporator 130, second evaporator 220 and condenser 120 are arranged in sequence. It can be understood that the second throttling device 500 can also be set on the inlet side of the first evaporator 130 corresponding to the second refrigerant path M20.

[0093] The technical solution provided in this application embodiment, by setting a first throttling device 400 and a second throttling device 500 in the refrigerant circulation path, can reduce the pressure and temperature of the refrigerant through the throttling device, so as to meet the usage requirements of the first evaporator 130 and the second evaporator 220 and adapt to diverse drying and residual water removal needs.

[0094] To improve the removal efficiency of residual water, in some possible embodiments of this application, the first drying subsystem 100 further includes a first fan, which is used to provide the circulation power for the drying air in the first circulating air duct F10; the second drying subsystem 200 further includes a second fan, which is used to provide the circulation power for the desorption air in the second circulating air duct F20.

[0095] In this embodiment, the first fan can be an axial flow fan, a centrifugal fan, a cross-flow fan, etc., and the second fan can be the same as or different from the first fan. It is understood that the first circulating air duct F10 and the second circulating air duct F20 are two independently configured air ducts; the drying air is driven by the first fan for circulation, and the desorption air is driven by the second fan for circulation.

[0096] The technical solution provided in this application embodiment can improve the flow rate of drying air and desorption air by setting a first fan and a second fan, respectively. When the refrigerant flows along the first refrigerant path M10, the water vapor exchange efficiency between the drying air and the object to be dried, as well as the water vapor exchange efficiency between the desorption air and the moisture absorption and dehumidification device 210, can be improved, thereby improving the drying efficiency. When the refrigerant flows along the second refrigerant path M20, the flow rate of high-temperature drying air and desorption air can be provided to accelerate the removal of residual water in the first circulating air duct F10 and the second circulating air duct F20.

[0097] To facilitate drying of the items to be dried, refer to... Figure 1 and Figure 2 In some possible embodiments of this application, the drying system further includes a drying cylinder 600, which is used to hold the object to be dried. Along the first circulating air duct F10, the first evaporator 130, the moisture absorption and dehumidification device 210, the condenser 120 and the drying cylinder 600 are arranged in sequence.

[0098] In this embodiment, drying air passes through the drying cylinder 600, transferring heat to the items to be dried within the drying cylinder 600 and carrying away the vaporized water vapor from the items, thereby drying the items. The drying cylinder 600 can be a drum, which can further improve drying efficiency by tumbling the items to be dried.

[0099] In this embodiment of the application, when the first evaporator 130, the moisture absorption and dehumidification device 210, the condenser 120 and the drying cylinder 600 are sequentially arranged on the first circulating air duct F10, the drying air can be dehumidified by the first evaporator 130 alone; the drying air can also be dehumidified by the first evaporator 130 and the moisture absorption and dehumidification device 210 in sequence, and become drier.

[0100] The technical solution provided in this application embodiment uses a drying cylinder 600 to hold the items to be dried. The drying air is dehumidified by the first evaporator 130, dehumidified a second time by the moisture absorption and dehumidification device 210, and then heated by the condenser 120 to become high-temperature and high-dryness drying air, so as to quickly dry the items to be dried.

[0101] Based on this, this application also provides a garment processing device, including the drying system of this application.

[0102] In this embodiment, the clothing processing device can be a dryer for drying clothes; the clothing processing device can also be a washer-dryer combo, which is also equipped with a washing system for cleaning clothes and a drying system for drying the cleaned clothes.

[0103] The technical solution provided in this application embodiment includes a clothing processing device with a first refrigerant path M10, a second refrigerant path M20, and a switching device 300. The switching device 300 connects the compressor 110 to one of the first refrigerant path M10 and the second refrigerant path M20, allowing the first evaporator 130 and the condenser 120 to interchange functions. When the refrigerant flows along the second refrigerant path M20, the first evaporator 130 can release heat to dry residual water, preventing bacterial growth and odor.

[0104] Furthermore, this application also provides a drying method for clothing processing equipment, referring to... Figure 8 and Figure 9 The garment processing equipment includes a compressor 110, a switching device 300, a first refrigerant path M10, and a second refrigerant path M20. In the first refrigerant path M10, a condenser 120 is located upstream of a first evaporator 130; in the second refrigerant path M20, the condenser 120 is located downstream of the first evaporator 130, and the first evaporator 130 is located in a first circulating air duct F10 for drying. (Refer to...) Figure 10 Drying methods include:

[0105] S100: Obtain the working mode of the garment processing equipment, including the first mode of drying the items to be dried and the second mode of drying the garment processing equipment.

[0106] S200: When the garment processing equipment is switched to the first mode, the control switching device 300 connects the compressor 110 to the first refrigerant path M10;

[0107] S300: When the garment handling equipment is switched to the second mode, the control switching device 300 connects the compressor 110 to the second refrigerant path M20.

[0108] In this embodiment, the first mode can be the conventional drying mode of the drying system. The switching device 300 connects the compressor 110 to the first refrigerant path M10. The refrigerant flows sequentially through the condenser 120 and the first evaporator 130. The refrigerant first passes through the condenser 120 and releases heat. The condenser 120 can use the heat released by the refrigerant to heat the drying air in the first circulating air duct F10. The refrigerant then passes through the first evaporator 130 and absorbs heat. The first evaporator 130 can use the heat absorbed by the refrigerant to cool the drying air, so that the water vapor in the drying air is condensed and removed. The drying air passing through the first evaporator 130 and the condenser 120 becomes a high-temperature dry state, which can be used to dry the object to be dried.

[0109] Based on this, with the dehumidification device 210 and the second evaporator 220 installed, the refrigerant first passes through the condenser 120 and releases heat; then the refrigerant passes through the second evaporator 220 and absorbs heat. The second evaporator 220 can use the heat absorbed by the refrigerant to cool the desorption air circulating in the second circulating air duct F20, so that the water vapor in the desorption air is condensed and removed.

[0110] In this embodiment, the second mode can be a residual water removal mode. The switching device 300 connects the compressor 110 to the second refrigerant path M20. The refrigerant first passes through the first evaporator 130 and releases heat. The first evaporator 130 can use the heat released by the refrigerant to heat itself and the first circulating air duct F10, thereby vaporizing and removing the residual water on the outer surface of the first evaporator 130 and in the first circulating air duct F10, especially the part of the first circulating air duct F10 corresponding to the first evaporator 130. The refrigerant then passes through the condenser 120 and absorbs heat so that it can enter the compressor 110 to complete the refrigerant circulation.

[0111] Based on this, with the dehumidification device 210 and the second evaporator 220 set up, the refrigerant first passes through the second evaporator 220 and releases heat. The second evaporator 220 can use the heat released by the refrigerant to heat the second circulating air duct F20, thereby vaporizing and removing the residual water on the outer surface of the second evaporator 220 and the second circulating air duct F20. It can also remove the water vapor adsorbed on the dehumidification device 210 by heating, so that the dehumidification device 210 can be kept in a dry state, which is convenient for the reuse of the drying system.

[0112] The technical solution provided in this application embodiment connects the compressor 110 to one of the first refrigerant path M10 and the second refrigerant path M20 through the switching device 300, and switches the drying system to the first mode or the second mode. In the first mode and the second mode, the functions of the first evaporator 130 and the condenser 120 are interchanged. When the refrigerant flows along the second refrigerant path M20, the first evaporator 130 can release heat to remove residual water and dry the moisture absorption and dehumidification device 210, thereby preventing bacterial growth and odor.

[0113] Reference Figure 8 , Figure 9 and Figure 10 In one possible embodiment of this application, the drying system includes a first drying subsystem 100 and a second drying subsystem 200. The first drying subsystem 100 includes a condenser 120 and a first evaporator 130 arranged along a first circulating air duct F10. The second drying subsystem 200 includes a moisture absorption and dehumidification device 210 and a second evaporator 220 arranged along a second circulating air duct F20. The moisture absorption and dehumidification device 210 includes a drying area and a regeneration area. The regeneration area is located in the second circulating air duct F20, and the drying area is located in the first circulating air duct F10. A drying cylinder 600 is arranged downstream of the condenser 120 in the first circulating air duct F10.

[0114] Based on this, it also includes a refrigerant circulation path and a switching device 300. The switching device 300 is a four-way valve. The refrigerant circulation path includes a first refrigerant path M10 and a second refrigerant path M20. When the drying system needs to dry the items to be dried, the first flow channel L10 and the third flow channel L30 are connected through the four-way valve, and the second flow channel L20 and the fourth flow channel L40 are connected. The compressor 110 is connected to the first refrigerant path M10. The drying system works in the first mode. The refrigerant passes through the compressor 110, the condenser 120 and the first evaporator 130 (and / or the second evaporator 220) in sequence, and then flows back to the compressor 110. The first evaporator 130 and the second evaporator 220 absorb heat and dehumidify, while the condenser 120 releases heat. When the drying system is required to remove residual water, the first flow channel L10 and the fourth flow channel L40 are connected by a four-way valve, and the second flow channel L20 and the third flow channel L30 are connected. The drying system operates in the second mode, and the refrigerant passes sequentially through the compressor 110, the first evaporator 130 (and / or the second evaporator 220), and the condenser 120, before returning to the compressor 110. The first evaporator 130 and the second evaporator 220 release heat to remove residual water, while the condenser 120 absorbs heat.

[0115] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A drying system, characterized in that, include: The first drying subsystem includes a compressor, a condenser, and a first evaporator located in the refrigerant circulation path; The refrigerant circulation path includes a first refrigerant path and a second refrigerant path, wherein the condenser is located upstream of the first evaporator in the first refrigerant path; In the second refrigerant path, the condenser is located downstream of the first evaporator; A switching device is used to connect the first refrigerant path to the compressor so that the first evaporator absorbs heat; or, to connect the second refrigerant path to the compressor so that the first evaporator releases heat.

2. The drying system according to claim 1, characterized in that, The drying system further includes a second drying subsystem, which includes a moisture absorption and dehumidification device and a regeneration device disposed in the second circulating air duct, and the moisture absorption and dehumidification device and the first evaporator are both disposed in the first circulating air duct.

3. The drying system according to claim 2, characterized in that, The regeneration device includes a second evaporator, which is disposed in the refrigerant circulation path. In the first refrigerant path, the condenser is disposed upstream of the second evaporator; in the second refrigerant path, the condenser is disposed downstream of the second evaporator. When the first refrigerant path is connected to the compressor, the second evaporator absorbs heat; When the second refrigerant path is connected to the compressor, the second evaporator releases heat.

4. The drying system according to claim 3, characterized in that, The second evaporator is provided with a moisture-absorbing coating, which is used to dehumidify the desorbed air in the second circulating air duct.

5. The drying system according to claim 3, characterized in that, The first evaporator and the second evaporator are connected in series in the refrigerant circulation path, and the first evaporator is located upstream of the second evaporator along the first refrigerant path.

6. The drying system according to claim 3, characterized in that, In the refrigerant circulation path, the first evaporator and the second evaporator are connected in parallel.

7. The drying system according to any one of claims 1 to 6, characterized in that, The switching device is disposed between the compressor, the first refrigerant path, and the second refrigerant path; the switching device is a four-way valve, which is connected to both ends of the compressor through the first flow channel and the second flow channel, and connected to the condenser and the first evaporator through the third flow channel and the fourth flow channel, respectively. The four-way valve is configured to connect the first flow path and the third flow path, and connect the second flow path and the fourth flow path, so that the compressor is connected to the first refrigerant path; or, to connect the first flow path and the fourth flow path, and connect the second flow path and the third flow path, so that the compressor is connected to the second refrigerant path.

8. The drying system according to any one of claims 3 to 6, characterized in that, The drying system further includes a throttling device, and the first evaporator and the second evaporator are located downstream of the throttling device along the first refrigerant path.

9. The drying system according to any one of claims 2 to 6, characterized in that, The first drying subsystem further includes a first fan, which is used to provide the circulating power for the drying air in the first circulating air duct; The second drying subsystem also includes a second fan, which provides the circulating power for the desorption air in the second circulating air duct.

10. The drying system according to any one of claims 2 to 6, characterized in that, It also includes a drying cylinder, which is used to hold the object to be dried. Along the first circulating air duct, the first evaporator, the moisture absorption and dehumidification device, the condenser and the drying cylinder are arranged in sequence.

11. A garment processing device, characterized in that, include: The drying system according to any one of claims 1 to 10.

12. A drying method for a garment processing device, the garment processing device comprising a compressor, a switching device, a first refrigerant path, and a second refrigerant path, wherein a condenser is disposed upstream of a first evaporator in the first refrigerant path; and the condenser is disposed downstream of the first evaporator in the second refrigerant path, and the first evaporator is disposed in a first circulating air duct for drying; characterized in that, The method includes: The working modes of the garment processing equipment are obtained, including a first mode for drying the items to be dried and a second mode for drying the garment processing equipment. When the clothing processing equipment switches to the first mode, the switching device is controlled to connect the compressor to the first refrigerant path; When the clothing processing equipment switches to the second mode, the switching device is controlled to connect the compressor to the second refrigerant path.

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