Drying system and clothes processing equipment

Abstract

The utility model is suitable for the technical field of clothes drying, and provides a drying system and clothes processing equipment. The drying system comprises a first heat exchanger, a second heat exchanger, a moisture absorption and dehumidification device, a circulating fan, a bypass air duct and a first switching mechanism; the first heat exchanger, the second heat exchanger, the moisture absorption and dehumidification device and the circulating fan form a first circulating air duct; the first heat exchanger is located on the upstream of the second heat exchanger in the wind direction of the first circulating air duct. The bypass air channel and the moisture absorption and dehumidification device are arranged in parallel, and the first switching mechanism is used for controlling circulating air to selectively pass through one of the bypass air channel and the moisture absorption and dehumidification device. According to the drying system, the moisture absorption and dehumidification device can be selected to participate in work in the clothes drying starting stage and the clothes drying ending stage, the moisture absorption and dehumidification device cannot participate in work in the clothes drying middle stage, and therefore the drying time can be shortened, and meanwhile energy consumption is not too high.

Description

Technical Field

[0001] The present application relates to the technical field of clothes drying, and in particular to a drying system and clothes processing equipment. Background Art

[0002] Clothes processing equipment (such as dryers and washer-dryers) can dry clothes after washing to save drying time.

[0003] Existing clothing processing equipment commonly uses heat pump condensing technology. While these offer energy-saving advantages, they also suffer from the disadvantage of longer drying times. For example, at the beginning of drying, the clothing temperature is low and heats up slowly, extending drying time. At the end of drying, the moisture content and dew point of the circulating drying air decrease, reducing the evaporator's dehumidification efficiency and extending drying time. Utility Model Content

[0004] In view of this, embodiments of the present application provide a drying system and a clothes processing device to solve the problem of long drying time.

[0005] The first aspect of an embodiment of the present application proposes a drying system, including a first heat exchanger, a second heat exchanger, a dehumidification device, a circulating fan, a bypass air duct and a first switching mechanism, wherein the first heat exchanger, the second heat exchanger, the dehumidification device and the circulating fan constitute a first circulating air duct; along the wind direction of the first circulating air duct, the first heat exchanger is upstream of the second heat exchanger; the bypass air duct is arranged in parallel with the dehumidification device, and the first switching mechanism is used to control the circulating air to pass through either the bypass air duct or the dehumidification device.

[0006] The drying system provided by the embodiments of the present application has the following advantages: Because the first circulating air duct is provided with a moisture absorption and dehumidification device, and the bypass air duct is arranged in parallel with the moisture absorption and dehumidification device, when the first switching mechanism controls the circulating air to pass through the bypass air duct, the first and second heat exchangers operate together, but the moisture absorption and dehumidification device does not operate. When the first switching mechanism controls the circulating air to pass through the moisture absorption and dehumidification device, the first and second heat exchangers, along with the moisture absorption and dehumidification device, operate together. Thus, at the beginning of drying clothes in the clothing container, the first and second heat exchangers, along with the moisture absorption and dehumidification device, can operate together to rapidly dehumidify, thereby shortening the initial drying time. During the intermediate drying phase of the clothes in the clothing container, the first and second heat exchangers can operate together, while the moisture absorption and dehumidification device does not operate, thereby reducing energy consumption and achieving energy conservation. At the end of drying the clothes in the clothing container, the moisture absorption and dehumidification device resumes operation to increase the dryness of the circulating air, thereby shortening the final drying time. Therefore, this design can shorten drying time while minimizing energy consumption.

[0007] In some embodiments, the moisture absorption and dehumidification device is located between the first heat exchanger and the second heat exchanger.

[0008] In some embodiments, the first switching mechanism is provided at a communication position between the bypass air duct and the first circulation air duct.

[0009] In some embodiments, a partition is provided in the first heat exchanger, and the partition is used to separate the desorbed air in the desorption air duct from the circulating air in the first circulation air duct.

[0010] In some embodiments, the drying system further includes a desorption air duct and a desorption fan provided on the desorption air duct, and the moisture absorption and dehumidification device is also located in the desorption air duct.

[0011] In some embodiments, the desorption air duct is a second circulation air duct, the desorption air duct and the first circulation air duct share the first heat exchanger, and the desorption air duct is provided with a second switching mechanism for controlling the desorption air duct to be opened or closed.

[0012] In some embodiments, the desorption air duct is a second circulation air duct, and the drying system further includes a third heat exchanger disposed on the desorption air duct.

[0013] In some embodiments, the dehumidification device includes a shell and a dehumidification rotary disk arranged in the shell, the shell is divided into a dehumidification zone and a desorption zone, the dehumidification rotary disk is provided with a desiccant, the dehumidification zone is located in the first circulation air duct, and the desorption zone is located in the desorption air duct.

[0014] In some embodiments, the drying system further comprises a heater for drying the desiccant in the dehumidification device.

[0015] In some embodiments, the first heat exchanger is an evaporator, the second heat exchanger is a condenser, and the drying system further includes a first refrigerant pipeline, a second refrigerant pipeline, a throttle and a compressor; the upstream of the first refrigerant pipeline is connected to the condenser, the downstream of the first refrigerant pipeline is connected to the evaporator, and the throttle is arranged on the first refrigerant pipeline; the upstream of the second refrigerant pipeline is connected to the evaporator, the downstream of the second refrigerant pipeline is connected to the condenser, and the compressor is arranged on the second refrigerant pipeline.

[0016] A second aspect of an embodiment of the present application proposes a clothing processing device, which includes a chassis, a clothing container and a drying system as described in the first aspect, wherein the drying system and the clothing container are both arranged in the chassis, and the clothing container is connected to the drying system.

[0017] The clothes processing device adopts any one or more embodiments of the above-mentioned drying system, and thus has the beneficial effects of the above-mentioned embodiments, which will not be described in detail here.

[0018] In some embodiments, the chassis includes a bottom plate and a vertical plate, and the bottom plate and the vertical plate construct at least part of the first circulation air duct and the bypass air duct; or, the chassis includes a base assembly, and the base assembly constructs at least part of the first circulation air duct and the bypass air duct.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or conventional technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a structural schematic diagram of a drying system provided by some embodiments of the present application, in which a moisture absorption and dehumidification device is located between a first heat exchanger and a second heat exchanger;

[0022] Figure 2is a schematic structural diagram of a drying system provided by some embodiments of the present application, in which a moisture absorption and dehumidification device is located downstream of a second heat exchanger;

[0023] Figure 3 is a structural schematic diagram of a drying system provided by some embodiments of the present application, in which a moisture absorption and dehumidification device is located upstream of a first heat exchanger;

[0024] Figure 4 This is a schematic structural diagram of a drying system provided in some embodiments of the present application, in which a first circulation air duct and a bypass channel are controlled by a first damper and a second damper, respectively;

[0025] Figure 5 Schematic diagram of a structure in which a first circulation duct and a bypass channel of a drying system provided in some embodiments of the present application are cooled by a first heat exchanger and a third heat exchanger respectively;

[0026] Figure 6 yes Figure 5 Schematic diagram of the structure in which the drying system is not provided with a third heat exchanger.

[0027] The meanings of the marks in the figure are:

[0028] 100. Drying system;

[0029] 10. Clothing container;

[0030] 20. First circulation air duct; 21. Circulation fan; 22. Bypass air duct; 23. First switching mechanism; 231. First damper; 232. Second damper;

[0031] 30. First heat exchanger;

[0032] 40. Second heat exchanger;

[0033] 50. Moisture absorption and dehumidification device; 51. Desorption zone; 511. Heater; 52. Moisture absorption zone;

[0034] 60. Desorption air duct; 61. Desorption fan; 62. Second switching mechanism;

[0035] 70. The third heat exchanger;

[0036] 80. First refrigerant pipeline; 81. Throttle;

[0037] 90. Second refrigerant pipeline; 91. Compressor. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0043] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0046] The first aspect of the embodiment of the present application provides a drying system for use in a clothing processing device (such as a clothes dryer or a washer-dryer). Figure 1 The drying system 100 includes a first heat exchanger 30, a second heat exchanger 40, a dehumidification device 50, a circulating fan 21, a bypass duct 22, and a first switching mechanism 23. The first heat exchanger 30, the second heat exchanger 40, the dehumidification device 50, and the circulating fan 21 form a first circulating duct 20. Along the wind direction of the first circulating duct 20, the first heat exchanger 30 is upstream of the second heat exchanger 40. The bypass duct 22 and the dehumidification device 50 are arranged in parallel. The first switching mechanism 23 is used to control whether the circulating air passes through the bypass duct 22 or the dehumidification device 50.

[0047] Among them, the wind direction of the first circulation air duct 20 is Figure 1 The first heat exchanger 30 is located upstream of the second heat exchanger 40, meaning that the circulating air flows from the first heat exchanger 30 to the second heat exchanger 40. The first heat exchanger 30 is used to cool the circulating air within the first circulating air duct 20, thereby condensing water vapor in the circulating air within the first circulating air duct 20 and performing a dehumidification function. The second heat exchanger 40 is used to heat the dehumidified circulating air within the first circulating air duct 20 to obtain warmer, drier circulating air, which facilitates drying the clothes within the clothing container 10.

[0048] The moisture absorption and dehumidification device 50 is used to assist in dehumidifying the circulating air in the first circulating air duct 20 to speed up the drying speed and reduce the drying time.

[0049] The circulation fan 21 is used to circulate the circulating air in the first circulation duct 20 so as to continuously dry the clothes in the clothing container 10 through the circulating air. The location of the circulation fan 21 is not limited in this application. For example, the circulation fan 21 can be located between the clothing container 10 and the first heat exchanger 30, or between the second heat exchanger 40 and the clothing container 10.

[0050] The bypass air duct 22 is arranged in parallel with the moisture absorption and dehumidification device 50 . It can be understood that both ends of the bypass air duct 22 are respectively connected to the first circulation air duct 20 and are respectively located upstream and downstream of the moisture absorption and dehumidification device 50 .

[0051] The first switching mechanism 23 is used to control the circulating air to pass through either the bypass duct 22 or the dehumidification device 50, that is, the first switching mechanism 23 allows the circulating air in the first circulating air duct 20 to pass through the bypass duct 22 instead of the dehumidification device 50; or, the first switching mechanism 23 allows the circulating air in the first circulating air duct 20 to pass through the dehumidification device 50 instead of the bypass duct 22.

[0052] The first heat exchanger 30, the second heat exchanger 40, the dehumidification device 50 and the circulating fan 21 construct the first circulating air duct 20. It can be understood that the first heat exchanger 30, the second heat exchanger 40, the dehumidification device 50 and the circulating fan 21 can be combined with pipelines to construct the first circulating air duct 20, or the first circulating air duct 20 can be constructed using the bottom plate and vertical plate of the chassis.

[0053] The beneficial effects of the drying system 100 provided in the embodiment of the present application are as follows: since the dehumidification device 50 is provided on the first circulation air duct 20, and the bypass air duct 22 is arranged in parallel with the dehumidification device 50, when the first switching mechanism 23 controls the circulating air to pass through the bypass air duct 22, the first heat exchanger 30 and the second heat exchanger 40 work together, but the dehumidification device 50 does not work; when the first switching mechanism 23 controls the circulating air to pass through the dehumidification device 50, the first heat exchanger 30, the second heat exchanger 40 and the dehumidification device 50 work together. Thus, at the beginning of drying the clothes in the clothing container 10, the first heat exchanger 30, the second heat exchanger 40, and the moisture absorption and dehumidification device 50 can be operated together to quickly dehumidify the clothes, thereby shortening the initial drying time. During the intermediate drying stage of the clothes in the clothing container 10, the first heat exchanger 30 and the second heat exchanger 40 can be operated together, while the moisture absorption and dehumidification device 50 is not operated, thereby reducing energy consumption and achieving energy conservation. At the end of drying the clothes in the clothing container 10, the moisture absorption and dehumidification device 50 is reactivated to increase the dryness of the circulating air, thereby shortening the drying time at the end of the drying stage. Therefore, the above design can shorten the drying time while also reducing energy consumption.

[0054] In some embodiments, when a user selects a drying program focused on energy conservation, the drying process can be completed by the first and second heat exchangers 30 and 40, while the dehumidification device 50 remains idle, achieving the most energy-efficient drying effect. When the user selects an accelerated drying program, the drying system 100 can extend the time the dehumidification device 50 remains active during the initial drying phase, increasing dehumidification capacity and shortening drying time.

[0055] Please refer to Figure 1 In some embodiments, the moisture absorption and dehumidification device 50 is located between the first heat exchanger 30 and the second heat exchanger 40 .

[0056] Among them, the bypass air duct 22 is located between the first heat exchanger 30 and the second heat exchanger 40. It can be understood that the two ends of the bypass air duct 22 can be connected to the first circulation air duct 20 respectively, or can be connected to the first heat exchanger 30 and the second heat exchanger 40 respectively.

[0057] During the initial drying phase, the first heat exchanger 30 condenses and dehumidifies the circulating air, and then the dehumidification device 50 absorbs moisture from the circulating air to rapidly remove moisture. Simultaneously, the dehumidification device 50 performs auxiliary heating, followed by heating via the second heat exchanger 40, to rapidly heat the clothes in the clothing container 10, quickly completing the drying warming phase and shortening the initial drying phase. When the outlet temperature of the clothing container 10 reaches a set value, the dehumidification device 50 ceases operation, entering the intermediate drying phase. This dehumidification device 50 is no longer operational, and the first and second heat exchangers 30, 40 continue drying the clothes in the clothing container 10. At the end of the drying process, the moisture content of the circulating air decreases, and the condensation efficiency of the first heat exchanger 30 decreases. The moisture absorption and dehumidification device 50 re-enters the drying process, performing a second adsorption dehumidification on the circulating air dehumidified by the first heat exchanger 30 to produce circulating air with a very low moisture content, while also increasing its temperature. After passing through the second heat exchanger 40, the resulting highly dry hot air enters the clothing container 10, rapidly drying the clothes and shortening the drying time. Furthermore, at the end of the drying process, the moisture content of the circulating air continues to decrease, while the temperature of the circulating air entering the clothing container 10 continues to rise. This shortened temperature rise period reduces the time the clothes are exposed to higher temperatures, effectively protecting the clothes from drying.

[0058] Among them, the circulating air temperature after dehumidification by the first heat exchanger 30 is low, and the corresponding dew point temperature is also low. Placing the dehumidification device 50 between the first heat exchanger 30 and the second heat exchanger 40 is beneficial to the secondary adsorption and dehumidification of the dehumidification device 50, and thus is beneficial to reducing the dehumidification heat consumption of the dehumidification device 50.

[0059] In other embodiments, please refer to Figure 2 The dehumidification device 50 can be located downstream of the second heat exchanger 40. The dehumidification device 50 absorbs residual moisture from the circulating air heated by the second heat exchanger 40, thereby shortening the drying time. In this case, the bypass duct 22 is located between the second heat exchanger 40 and the clothing container 10.

[0060] In other embodiments, please refer to Figure 3 The dehumidification device 50 can be located upstream of the first heat exchanger 30. It initially absorbs moisture from the circulating air before condensing it through the first heat exchanger 30, achieving rapid dehumidification and shortening the drying time. In this case, the bypass duct 22 is located between the circulating fan 21 and the first heat exchanger 30.

[0061] Please refer to Figure 1 In some embodiments, the first switching mechanism 23 is provided at a communication position between the bypass air duct 22 and the first circulation air duct 20 .

[0062] It can be understood that the first switching mechanism 23 can be provided at a position where the upstream of the bypass air duct 22 communicates with the first circulation air duct 20 , or can be provided at a position where the downstream of the bypass air duct 22 communicates with the first circulation air duct 20 .

[0063] Optionally, the first switching mechanism 23 includes an air damper, and the circulating air is allowed to pass through either the bypass air duct 22 or the moisture absorption and dehumidification device 50 by flipping the air damper.

[0064] Based on the above solution, the number of dampers can be reduced and the structure can be simplified. At the same time, only one damper needs to be operated to control the circulating air to pass through either the bypass duct 22 or the moisture absorption and dehumidification device 50, which makes the control more convenient.

[0065] In other embodiments, please refer to Figure 4 The first switching mechanism 23 includes a first damper 231 and a second damper 232. The first damper 231 is arranged on the first circulation air duct 20, and the second damper 232 is arranged on the bypass air duct 22, wherein the first damper 231 is located between the upstream and downstream of the bypass air duct 22; when the first damper 231 is closed and the second damper 232 is opened, the circulating air passes through the bypass air duct 22; when the first damper 231 is opened and the second damper 232 is closed, the circulating air passes through the moisture absorption and dehumidification device 50.

[0066] Please refer to Figure 6 In some embodiments, the drying system 100 further includes a desorption air duct 60 and a desorption fan 61 provided on the desorption air duct 60 , and the moisture absorption and dehumidification device 50 is also located in the desorption air duct 60 .

[0067] The wind direction of the desorption air duct 60 is Figure 1 in the Y direction.

[0068] Optionally, the desorption fan 61 may be arranged upstream of the moisture absorption and dehumidification device 50 , or downstream of the moisture absorption and dehumidification device 50 .

[0069] The cooperation of the desorption air duct 60 and the desorption fan 61 can realize continuous desorption of the moisture absorption and dehumidification device 50, which is beneficial to improve the desorption efficiency of the moisture absorption and dehumidification device 50 and realize rapid regeneration of the moisture absorption and dehumidification device 50.

[0070] In other embodiments, the desorption air duct 60 can not be provided, and the desorption fan 61 can be directly arranged at a position corresponding to the moisture absorption and dehumidification device 50 to continuously desorb the moisture absorption and dehumidification device 50 and realize regeneration of the moisture absorption and dehumidification device 50.

[0071] Please refer to Figure 1 In some embodiments, the desorption air duct 60 is a second circulating air duct, the desorption air duct 60 and the first circulating air duct 20 share the first heat exchanger 30, and the desorption air duct 60 is provided with a second switching mechanism 62 for controlling opening or closing of the desorption air duct 60.

[0072] The desorption air duct 60 and the first circulating air duct 20 share the first heat exchanger 30, that is, the water vapor in the desorption air duct 60 and the first circulating air duct 20 is condensed into liquid water through the first heat exchanger 30.

[0073] Optionally, the second switching mechanism 62 is located downstream of the first heat exchanger 30, and can also be located upstream of the first heat exchanger 30.

[0074] Optionally, the second switching mechanism 62 is a damper.

[0075] When the moisture absorption and dehumidification device 50 does not participate in work, the circulating fan 21 works, the desorption fan 61 stops working, the second switching mechanism 62 closes the desorption air duct 60, and the first switching mechanism 23 controls the circulating air to pass through the bypass air duct 22. The circulating air absorbs heat from the second heat exchanger 40 to become dry hot air, enters the clothes container 10, exchanges heat with the humid clothes in the clothes container 10, and evaporates into steam flowing out of the clothes container 10. The circulating air with high moisture content flows through the first heat exchanger 30 to exchange heat, and the water vapor in the circulating air is condensed into liquid water to achieve initial drying of the clothes.

[0076] When the moisture absorption and dehumidification device 50 participates in work, the circulating fan 21 and the desorption fan 61 work together, the second switching mechanism 62 closes the desorption air duct 60, and the first switching mechanism 23 controls the circulating air to pass through the moisture absorption and dehumidification device 50. The circulating air is dehumidified for the first time after flowing through the first heat exchanger 30, is further dehumidified in the moisture absorption and dehumidification device 50, absorbs heat of the moisture absorption and dehumidification device 50 to be heated for the first time, and is heated for the second time after flowing through the second heat exchanger 40 to obtain very dry hot air to dry the clothes in the clothes container 10.

[0077] Among them, after the desorbed air is heated by the heater 511, the moisture adsorbed by the dehumidification device 50 is desorbed and transported to the first heat exchanger 30 by the desorption fan 61. The water vapor of the desorbed air and the water vapor of the circulating air are cooled by the first heat exchanger 30 and condensed into liquid water, and the dehumidification device 50 is regenerated.

[0078] Based on the above solution, since the first circulation air duct 20 and the desorption air duct 60 share the first heat exchanger 30 , the number of first heat exchangers 30 is reduced, the structure is simplified, and the layout of the drying system 100 is facilitated.

[0079] In other embodiments, Figure 5 As shown, the desorption air duct 60 is a second circulation air duct, and the drying system 100 also includes a third heat exchanger 70 arranged on the desorption air duct 60; that is, the water vapor of the desorption air is cooled by the third heat exchanger 70 and condensed into liquid water, and the water vapor of the circulating air is cooled by the first heat exchanger 30 and condensed into liquid water.

[0080] In some embodiments, a partition is provided in the first heat exchanger 30 , and the partition is used to separate the desorbed air in the desorption air duct 60 from the circulating air in the first circulation air duct 20 .

[0081] Optionally, the first heat exchanger 30 includes a shell and a cooling body arranged in the shell, and the partition is located between the inner wall of the shell and the outer wall of the cooling body to separate the desorbed air entering the shell from the circulating air, thereby avoiding interference between the water vapor in the desorbed air and the water vapor in the circulating air when the dehumidification device 50 is working.

[0082] In some embodiments, the dehumidification device 50 includes a shell and a dehumidification turntable arranged in the shell. The shell is divided into a dehumidification zone 52 and a desorption zone 51. A dehumidification agent is provided on the dehumidification turntable. The dehumidification zone 52 is located in the first circulation air duct 20, and the desorption zone 51 is located in the desorption air duct 60.

[0083] The shape of the housing can be designed based on actual operating requirements, as long as it includes at least two functional areas: the moisture absorption area 52 and the desorption area 51. Furthermore, the shape of each functional area can also be designed based on actual needs and can be square, triangular, circular, or even fan-shaped, as long as the moisture absorption area 52 and the desorption area 51 are isolated from each other. The fan-shaped shape can more effectively and rationally utilize space.

[0084] The dehumidification disc can be a honeycomb or corrugated disc carrying a desiccant, capable of adsorbing and desorbing absorbed water vapor to achieve repeated desorption and regeneration. Optionally, the desiccant disc includes an inorganic or organic fiber carrier (such as ceramic or glass fiber), coated with a desiccant evenly distributed between and on the fiber carrier to absorb moisture from the airflow.

[0085] Among them, the desiccant can be a molecular sieve (including but not limited to type A molecular sieve, X / Y type molecular sieve, ZSM molecular sieve, Beta molecular sieve and other single crystal molecular sieves or mixed crystal molecular sieves, etc.), zeolite, modified / synthetic zeolite, polymer dilute desiccant, alkali metal aluminosilicate, lithium chloride, silica gel, modified silica gel, activated alumina and other materials with hygroscopic properties.

[0086] When the desiccant is a molecular sieve, the moisture absorption and dehumidification device 50 , the desorption fan 61 , the heater 511 and the desorption air duct 60 together constitute a molecular sieve drying system.

[0087] Based on the above scheme, the dehumidification turntable can be made to circulate between the dehumidification zone 52 and the desorption zone 51. The part of the turntable that moves to the dehumidification zone 52 absorbs moisture in the air, and then the part of the turntable that adsorbs moisture moves to the desorption zone 51 to desorb moisture, and the part of the turntable that has desorbed moisture moves to the desorption zone 51 to adsorb moisture again. In this way, the moisture in the air is removed in a reciprocating manner, thereby achieving the purpose of dehumidification.

[0088] In other embodiments, the moisture absorption and dehumidification device 50 may include a shell and a moisture absorption and dehumidification component disposed in the shell. The moisture absorption and dehumidification component may be a polygon such as a triangle or a rectangle, or may be an ellipse.

[0089] Please refer to Figure 1 In some embodiments, the drying system 100 further includes a heater 511 for drying the desiccant in the dehumidification device 50 .

[0090] The heater 511 may be a heating wire, a steam coil, or a condenser.

[0091] The heater 511 can quickly dry the desiccant in the desiccant dehumidification device 50 to further improve the desorption efficiency and further achieve rapid regeneration of the desiccant dehumidification device 50.

[0092] Please refer to Figure 1In some embodiments, the first heat exchanger 30 is an evaporator, the second heat exchanger 40 is a condenser, and the drying system 100 further comprises a first refrigerant pipeline 80, a second refrigerant pipeline 90, a throttling device 81 and a compressor 91; the first refrigerant pipeline 80 is connected to the condenser at an upstream thereof, and connected to the evaporator at a downstream thereof; the throttling device 81 is arranged on the first refrigerant pipeline 80; the second refrigerant pipeline 90 is connected to the evaporator at an upstream thereof, and connected to the condenser at a downstream thereof; and the compressor 91 is arranged on the second refrigerant pipeline 90.

[0093] The flow direction of the refrigerant is the Z direction in Figure 1 The evaporator, the condenser, the first refrigerant pipeline 80, the second refrigerant pipeline 90, the throttling device 81 and the compressor 91 together form a heat pump drying assembly, which utilizes the phase change of the refrigerant to achieve the purposes of dehumidification and drying.

[0094] In the condenser, the high-temperature and high-pressure gaseous refrigerant is converted into liquid refrigerant, and releases heat to the surroundings to achieve the purpose of heating, and then to achieve the purposes of heating and drying the circulating air; the liquid refrigerant enters the evaporator through the throttling device 81, and the liquid refrigerant absorbs heat from the surroundings to be converted into gaseous refrigerant in the evaporator to achieve the purpose of cooling, so that the water vapor in the circulating air is condensed into liquid water to achieve the purpose of dehumidification; then, the gaseous refrigerant is converted into high-temperature and high-pressure gaseous refrigerant by the compressor 91 to enter the condenser to achieve the circulation of the refrigerant.

[0095] In other embodiments, the first heat exchanger 30 is a cold water coil, and the second heat exchanger 40 is a steam coil, and in this case, the first refrigerant pipeline 80, the second refrigerant pipeline 90, the throttling device 81 and the compressor 91 are not required.

[0096] The second aspect of the embodiments of the present application proposes a laundry treatment apparatus, which can be a clothes dryer or a washer-dryer. The laundry treatment apparatus comprises a cabinet, a laundry container 10 and the drying system 100 as described in the first aspect, the drying system 100 and the laundry container 10 are arranged in the cabinet, and the laundry container 10 is connected to the drying system 100.

[0097] It can be understood that the laundry container 10 can be a container for drying laundry, or a container for washing and drying laundry. The laundry container 10 can be a drum structure or a pulsator structure.

[0098] The laundry treatment apparatus adopts any one or more of the embodiments of the drying system 100 described above, and thus has the beneficial effects of the above embodiments, which will not be repeated here.

[0099] In some embodiments, the chassis includes a bottom plate and a vertical plate, which form at least a portion of the first circulation duct 20 and the bypass duct 22. Alternatively, the chassis includes a base assembly, which forms at least a portion of the first circulation duct 20 and the bypass duct 22. This allows full utilization of the structure within the chassis, facilitating improved compactness of the laundry processing apparatus. Of course, in other embodiments, piping may also be provided within the chassis, forming at least a portion of the first circulation duct 20 and the bypass duct 22.

[0100] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A drying system, characterized in that: It includes a first heat exchanger, a second heat exchanger, a dehumidification device, a circulating fan, a bypass air duct and a first switching mechanism. The first heat exchanger, the second heat exchanger, the dehumidification device and the circulating fan constitute a first circulating air duct; along the wind direction of the first circulating air duct, the first heat exchanger is upstream of the second heat exchanger; the bypass air duct and the dehumidification device are arranged in parallel, and the first switching mechanism is used to control the circulating air to pass through either the bypass air duct or the dehumidification device.

2. The drying system according to claim 1, characterized in that: The moisture absorption and dehumidification device is located between the first heat exchanger and the second heat exchanger.

3. The drying system according to claim 1, wherein: The first switching mechanism is provided at a communication position between the bypass air duct and the first circulation air duct.

4. The drying system according to claim 1, wherein: The drying system further includes a desorption air duct and a desorption fan arranged on the desorption air duct, and the moisture absorption and dehumidification device is also located in the desorption air duct.

5. The drying system according to claim 4, characterized in that: The desorption air duct is a second circulation air duct. The desorption air duct and the first circulation air duct share the first heat exchanger. The desorption air duct is provided with a second switching mechanism for controlling the desorption air duct to be opened or closed.

6. The drying system according to claim 5, characterized in that: A partition is provided in the first heat exchanger, and the partition is used to separate the desorbed air in the desorption air duct from the circulating air in the first circulating air duct.

7. The drying system according to claim 4, characterized in that: The desorption air duct is a second circulation air duct, and the drying system further includes a third heat exchanger arranged on the desorption air duct.

8. The drying system according to claim 4, wherein: The dehumidification device includes a shell and a dehumidification rotary disk arranged in the shell. The shell is divided into a dehumidification zone and a desorption zone. A dehumidification rotary disk is provided with a desiccant. The dehumidification zone is located in the first circulation air duct, and the desorption zone is located in the desorption air duct.

9. The drying system according to claim 8, characterized in that: The drying system further includes a heater for drying the moisture absorbent in the moisture absorption and dehumidification device.

10. The drying system according to any one of claims 1 to 9, characterized in that: The first heat exchanger is an evaporator, the second heat exchanger is a condenser, and the drying system further includes a first refrigerant pipeline, a second refrigerant pipeline, a throttle and a compressor; the upstream of the first refrigerant pipeline is connected to the condenser, the downstream of the first refrigerant pipeline is connected to the evaporator, and the throttle is arranged on the first refrigerant pipeline; the upstream of the second refrigerant pipeline is connected to the evaporator, the downstream of the second refrigerant pipeline is connected to the condenser, and the compressor is arranged on the second refrigerant pipeline.

11. A clothes processing device, characterized in that: The drying system comprises a cabinet, a clothes container and a drying system according to any one of claims 1 to 10, wherein the drying system and the clothes container are both arranged in the cabinet, and the clothes container is connected to the drying system.

12. The clothes processing device according to claim 11, characterized in that: The chassis includes a bottom plate and a vertical plate, and the bottom plate and the vertical plate construct at least part of the first circulation air duct and the bypass air duct; or the chassis includes a base assembly, and the base assembly constructs at least part of the first circulation air duct and the bypass air duct.

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