Fresh food storage room, humidity control system and refrigeration equipment

Abstract

This application relates to a fresh-keeping compartment, a humidity control system, and a refrigeration device. The fresh-keeping compartment includes a main body, a cooling module, and a humidity control module. The main body has an internal cavity. The cooling module provides radiative cooling to the cavity. The cooling module includes an air duct chamber and a humidity control membrane assembly. The air duct chamber has a humidity control port communicating with the cavity, and the humidity control membrane assembly completely covers the port. The humidity control module includes a humidity control chamber containing a moisture-absorbing component and a desorption component. The humidity control chamber communicates with both the cavity and the air duct chamber. The moisture-absorbing component absorbs moisture from the cavity and the desorption component transports the moisture to the air duct chamber. When the fresh-keeping compartment provided by this application provides radiative cooling to the cavity via the cooling module, the moisture-absorbing component of the humidity control module can draw moisture out of the cavity, thereby reducing the humidity inside the cavity and preventing frost formation.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and in particular to a fresh-keeping compartment, a humidity control system, and a refrigeration device. Background Technology

[0002] As people's living standards improve, refrigeration equipment such as refrigerators are gradually becoming commonplace in households. However, with increasing demands for food preservation, refrigeration equipment must not only extend shelf life but also maintain food quality. Traditional refrigerators come in two forms: direct cooling and frost-free cooling. Compared to direct cooling refrigerators, frost-free refrigerators have become the mainstream due to the elimination of manual defrosting and the ability to more accurately control the temperature within the compartment by adjusting the airflow. However, frost-free refrigerators blow away surface moisture from food during the cooling process, potentially damaging its quality. Furthermore, food near the air vents is directly exposed to cold air, resulting in uneven food temperature distribution and negatively impacting the quality of refrigerated or frozen food.

[0003] To address the aforementioned issues, existing technologies employ indirect refrigeration via sealed drawers. The storage drawers are placed inside a sealed compartment, and the entire compartment is cooled by circulating cold air on the outer surface of the compartment or by cooling the compartment surface through an evaporator. The interior of the storage drawer is then cooled through thermal radiation from the compartment surface. This reduces temperature fluctuations within the compartment and eliminates direct cold airflow, thereby improving food preservation.

[0004] However, because the temperature inside the compartment is low and it is in a closed state, when the user opens the drawer, moisture from the outside air will enter the compartment, resulting in high humidity inside. This causes condensation, frost, and ice to form inside the compartment. Since the humidity inside the compartment cannot be regulated by cold air, the long-term accumulation of ice and frost can make it difficult to open the drawer and even affect the normal refrigeration and heat exchange process, thus reducing the compartment's preservation effect. Utility Model Content

[0005] This application provides a fresh-keeping compartment, a humidity control system, and a refrigeration device to solve the technical problem that in the prior art, when the interior of the intermediate compartment cannot be dehumidified by cold air, condensation, frost, and ice formation are easily caused by high humidity.

[0006] In a first aspect, this application provides a fresh-keeping compartment, comprising:

[0007] The main body of the compartment has an internal cavity for receiving it.

[0008] A cooling module is installed on the side wall of the main body of the compartment and is used to achieve radiative cooling of the receiving cavity. The cooling module includes an air duct chamber and a humidity regulating membrane assembly. The air duct chamber has a humidity regulating port that communicates with the receiving cavity, and the humidity regulating membrane assembly completely covers the humidity regulating port.

[0009] The humidity control module includes a humidity control chamber separated from the receiving cavity. The humidity control chamber is connected to both the receiving cavity and the air duct chamber. The humidity control chamber is equipped with a moisture absorption component and a desorption component. The moisture absorption component is used to absorb moisture inside the receiving cavity, and the desorption component is used to transport the moisture absorbed by the moisture absorption component to the air duct chamber.

[0010] Optionally, a moisture-absorbing port is provided on the inner wall of the main body of the chamber, the humidity-regulating module is located outside the receiving cavity, and the humidity-regulating chamber is connected to the receiving cavity through the moisture-absorbing port;

[0011] The moisture absorption port is equipped with an openable and closable moisture absorption door.

[0012] Optionally, the humidity regulating membrane assembly includes a humidity regulating membrane body and a humidity regulating membrane cover. The humidity regulating membrane body completely covers the humidity regulating port, and the humidity regulating membrane cover is movably disposed at the humidity regulating port to realize the opening and closing of the humidity regulating port.

[0013] Optionally, the cooling module includes an air duct cover and a cooling plate, the air duct cover is connected to the cooling plate, and the air duct chamber is formed between the air duct cover and the cooling plate;

[0014] At least a portion of the cooling plate is configured as the inner wall of the receiving cavity, a humidity control port is opened on the cooling plate, and the humidity control membrane assembly is connected to the cooling plate.

[0015] Optionally, the interior of the air duct chamber is divided into multiple cooling air ducts by an air duct partition. The multiple cooling air ducts include a first air duct and a second air duct. The first air duct is arranged around the outer periphery of the second air duct, and the humidity control port is arranged in the second air duct.

[0016] Optionally, the moisture absorption assembly includes a rotatable moisture absorption disc, and the desorption assembly includes a heating element and a dehumidifying element. The heating element is used to discharge moisture from the moisture absorption disc, and the dehumidifying element is used to extract the discharged moisture from the moisture absorption disc and transport it to the air duct chamber.

[0017] Optionally, the humidity control module also includes a module housing, within which a humidity control chamber is formed. One end of the module housing is connected to the main body of the chamber, and the humidity control chamber is connected to the receiving cavity.

[0018] The moisture-absorbing turntable is rotatably located inside the humidity-regulating chamber, which contains a desorption chamber. The moisture-absorbing turntable can rotate relative to the desorption chamber. The desorption assembly is located inside the desorption chamber, which is connected to the air duct chamber.

[0019] Optionally, the desorption chamber includes a first chamber and a second chamber with their openings facing each other. The two sides of the desiccant abut against the openings of the first chamber and the second chamber, respectively. The heating element is disposed inside the first chamber, and the desiccant is disposed inside the second chamber. The second chamber is connected to the air duct chamber.

[0020] Alternatively, the moisture-absorbing disc may be made of a metal-organic framework compound.

[0021] Secondly, this application provides a humidity control system, including the preservation chamber provided in the first aspect of this application, and also includes a detection component and a control component. The detection component includes a humidity detection element and a reflectivity detection element disposed inside the containment cavity. The reflectivity detection element is used to detect the reflectivity of the inner wall of the containment cavity. The control component is signal connected to the detection component, the cooling module, and the humidity control module respectively.

[0022] Thirdly, this application provides a refrigeration device, including the fresh-keeping compartment provided in the first aspect of this application;

[0023] Alternatively, it could include the humidity control system provided in the second aspect of this application.

[0024] The technical solutions provided in this application have the following advantages compared with the prior art:

[0025] The preservation chamber provided in this embodiment uses a cooling module to radiate cool the interior of the chamber. When the humidity inside the chamber is too high, the moisture-absorbing component of the humidity-regulating module can absorb moisture from the chamber, thereby reducing the humidity and preventing condensation, frost, and ice formation. Simultaneously, because the air duct chamber has a humidity-regulating port connected to the chamber, and the humidity-regulating membrane component completely covers the port, cold air is prevented from blowing directly into the chamber. When the humidity inside the chamber is too low, the humidity-regulating membrane component, which selectively allows water molecules to pass through while blocking gas molecules, conducts water molecules from the high-humidity side to the low-humidity side through capillary action, increasing the humidity inside the chamber and achieving windless humidification.

[0026] The humidity control system and refrigeration equipment provided in this application both include the above-mentioned fresh-keeping compartment. The combination of the humidity control module and the cooling module (including the humidity control membrane assembly) can prevent condensation, frost and ice formation inside the containment cavity. Therefore, they naturally possess the technical effects of the above-mentioned fresh-keeping compartment. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0030] Figure 1 Schematic diagram of the structure of the preservation compartment provided in the embodiments of this application Figure 1 ;

[0031] Figure 2 Schematic diagram of the structure of the preservation compartment provided in the embodiments of this application Figure 2 ;

[0032] Figure 3 An exploded view of the preservation compartment provided in the embodiments of this application;

[0033] Figure 4 Partial cross-sectional view of the preservation compartment provided in the embodiments of this application. Figure 1 ;

[0034] Figure 5 Provided for the embodiments of this application Figure 4 Enlarged detail of section A;

[0035] Figure 6 Partial cross-sectional view of the preservation compartment provided in the embodiments of this application. Figure 2 ;

[0036] Figure 7 Provided for the embodiments of this application Figure 6 Enlarged detail view of section B;

[0037] Figure 8 This is a schematic diagram of the humidity control membrane assembly being shut down according to an embodiment of this application;

[0038] Figure 9 An exploded view of the humidity control module provided in the embodiments of this application;

[0039] Figure 10 A flowchart of a humidity control method provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Main chamber; 11. Receiving cavity; 12. Moisture absorption port; 13. Moisture absorption door;

[0042] 2. Cooling module; 21. Air duct chamber; 211. Humidity regulating port; 212. Air duct partition; 213. First air duct; 214. Second air duct; 215. First air outlet; 216. Second air outlet; 22. Humidity regulating membrane assembly; 221. Humidity regulating membrane body; 222. Humidity regulating membrane cover; 223. Drive component; 23. Air duct cover; 24. Cooling tray;

[0043] 3. Humidity regulating module; 31. Moisture absorption component; 311. Moisture absorption turntable; 312. Rotating shaft assembly; 32. Desorption component; 321. Heating element; 322. Dehumidification component; 33. Module housing; 331. First chamber; 332. Second chamber; 333. Main body of the housing; 334. First partition; 335. Second partition; 336. End cap;

[0044] 4. Detection components; 41. Humidity detection component; 42. Reflectivity detection component;

[0045] 5. Duct connection components; 51. Connecting pipes; 52. Air inlet connectors; 53. Air outlet connectors. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0048] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0049] To address the technical problem in existing technologies where high humidity can easily lead to condensation, frost, and ice formation inside the intermediate compartment when dehumidification via cold air is not possible, this application provides a fresh-keeping compartment, a humidity control system, and a refrigeration device. This fresh-keeping compartment, while radiatively cooling the interior of the receiving cavity 11 through the cooling module 2, can also absorb moisture from the receiving cavity 11 through the humidity control module 3, thus preventing condensation, frost, and ice formation on the inner wall of the receiving cavity 11 when there is excessive moisture inside.

[0050] Please see Figures 1 to 10 The first aspect of this application provides a fresh-keeping compartment, including a compartment body 1, a cooling module 2 and a humidity control module 3. The compartment body 1 has an internal cavity 11, which can be used to accommodate a storage drawer (not shown in the figure) containing food.

[0051] The cooling module 2 is installed on the side wall of the main body of the compartment 1, such as... Figure 1 , Figure 2 and Figure 3 As shown, it is used to achieve radiative cooling of the receiving cavity 11, so that the food storage temperature inside the storage drawer is maintained at the preset temperature. Moreover, by using radiative cooling to refrigerate or freeze the food, cold air can be avoided from being blown directly onto the surface of the food, which is conducive to ensuring the quality of refrigerated or frozen food and achieving efficient preservation.

[0052] The cooling module 2 includes an air duct chamber 21 and a humidity-regulating membrane assembly 22. Cool air flows inside the air duct chamber 21, lowering the temperature of the cooling module 2. The cooling module 2 then radiates cooling onto the receiving cavity 11 from one side. The air duct chamber 21 has a humidity-regulating port 211 communicating with the receiving cavity 11. The humidity-regulating membrane assembly 22 completely covers the humidity-regulating port 211. Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, this can prevent the cold air circulating in the air duct chamber 21 from blowing out of the humidity regulating port 211, which would affect the quality of the food.

[0053] The humidity control module 3 includes a humidity control chamber separated from the receiving cavity 11. The humidity control chamber is connected to both the receiving cavity 11 and the air duct chamber 21. The humidity control chamber is equipped with a moisture absorption component 31 and a desorption component 32, such as... Figure 2 , Figure 4 and Figure 5 As shown, the moisture-absorbing component 31 is used to absorb moisture inside the receiving cavity 11. When the humidity inside the receiving cavity 11 is too high, the moisture-absorbing component 31 can absorb the moisture from the receiving cavity 11, thereby reducing the humidity inside the receiving cavity 11 and preventing condensation, frost, and ice formation inside the receiving cavity 11. The desorption component 32 is used to transport the moisture absorbed by the moisture-absorbing component 31 to the air duct chamber 21, and can discharge the moisture absorbed by the moisture-absorbing component 31, thereby ensuring the moisture-absorbing capacity of the moisture-absorbing component 31.

[0054] It should be noted that, on the one hand, this application can absorb moisture inside the receiving cavity 11 through the moisture-absorbing component 31 in the humidity-regulating module 3, which can be used to regulate the humidity inside the receiving cavity 11 when it is too high. On the other hand, since the humidity-regulating membrane component 22 has the principle of selectively permeating water molecules and automatically adjusting permeability, it can allow water molecules to pass through in gaseous or liquid form, but can effectively block the passage of gas molecules such as oxygen and ethylene. When the humidity inside the receiving cavity 11 is too low, if the humidity of the air duct chamber 21 is higher than that of the receiving cavity 11, the hydrophilic groups inside the membrane of the regulating membrane component adsorb water molecules to form a hydration layer. Through capillary action, water molecules are conducted from the high humidity side to the low humidity side, which can increase the humidity inside the receiving cavity 11 and prevent the humidity inside the receiving cavity 11 from being too low, thus affecting the preservation quality of the food.

[0055] In some embodiments of this application, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6The inner wall of the main compartment 1 is provided with a moisture absorption port 12, and the humidity control module 3 is located outside the receiving cavity 11 to avoid occupying the space inside the receiving cavity 11 and affecting the structural design and pull-out operation of the storage drawer. Furthermore, the humidity control chamber is connected to the receiving cavity 11 through the moisture absorption port 12, allowing the moisture absorption component 31 to absorb moisture from inside the receiving cavity 11 through the moisture absorption port 12, thereby reducing the humidity inside the receiving cavity 11 when it is in a high-humidity state.

[0056] The moisture absorption port 12 is equipped with an openable and closable moisture absorption door 13. The moisture absorption door 13 can be selectively opened according to the humidity state inside the receiving cavity 11. For example, when the inside of the receiving cavity 11 is in a high humidity state, the moisture absorption door 13 and the humidity regulating module 3 are opened to reduce the humidity inside the receiving cavity 11. When the inside of the receiving cavity 11 is in a normal humidity state or a low humidity state, the moisture absorption door 13 is closed to prevent the humidity inside the receiving cavity 11 from decreasing further.

[0057] In some embodiments of this application, please refer to Figure 5 The humidity control module 3 is located at the back of the main body of the chamber 1. The moisture-absorbing door 13 can only be opened in one direction, that is, only towards the side where the moisture-absorbing component 31 is located (i.e., the rear side), to achieve unidirectional flow of moisture, that is, from the receiving cavity 11 to the interior of the humidity control chamber. The moisture-absorbing door 13 can be driven by a rotary drive component, and is sealed by the rear side wall of the main body of the chamber 1 when the moisture-absorbing door 13 is closed.

[0058] In some embodiments of this application, please refer to Figure 6 , Figure 7 and Figure 8 The humidity-regulating membrane assembly 22 includes a humidity-regulating membrane body 221 and a humidity-regulating membrane cover 222. The humidity-regulating membrane body 221 can be made of polymer materials (such as PP polypropylene) or natural cellulose substrate. The humidity-regulating membrane body 221 is provided with a hydrophilic coating (such as CaCl₂ solution), which can form a large number of micropores with a diameter of micrometers. These micropores allow water molecules with a small diameter (nanometer scale) to pass through in gaseous or liquid form, but can effectively block the passage of gas molecules such as oxygen and ethylene. The humidity-regulating membrane body 221 completely covers the humidity-regulating port 211, so that only water molecules transfer from the high humidity side to the low humidity side between the air duct chamber 21 and the receiving cavity 11, and cold air is not allowed to pass through. This allows the humidity-regulating membrane body 221 to regulate the humidity of the receiving cavity 11 while preventing cold air from inside the air duct chamber 21 from entering the receiving cavity 11, achieving the effect of windless humidification.

[0059] The humidity-regulating membrane cover 222 is movably disposed at the humidity-regulating port 211. The humidity-regulating membrane cover 222 is used to open and close the humidity-regulating port 211, so as to open or close the humidity-regulating port 211 according to the humidity state inside the receiving cavity 11. Figure 7 and Figure 8 As shown, the on / off control of the moisture transmission channel (i.e., humidity control port 211) can be realized, thereby enabling the humidity regulation function of the humidity control membrane assembly 22 to be turned on or off.

[0060] In some embodiments of this application, please refer to Figure 7 and Figure 8 The humidity regulating membrane assembly 22 also includes a drive member 223, which is connected to the humidity regulating membrane cover plate 222 and is used to drive the humidity regulating membrane cover plate 222 to move relative to the humidity regulating port 211. The drive member 223 can drive the humidity regulating membrane cover plate 222 to slide horizontally, lift or rotate to realize the opening and closing of the humidity regulating port 211, all of which can achieve the purpose of this application.

[0061] It should be noted that, in order to avoid interference between the humidity regulating membrane cover plate 222 and the humidity regulating membrane body 221 during the movement of the humidity regulating membrane body 221, when the humidity regulating membrane body 221 is located inside the air duct chamber 21, the humidity regulating membrane cover plate 222 is located outside the air duct chamber 21 (i.e., inside the receiving cavity 11), and when the humidity regulating membrane body 221 is located outside the air duct chamber 21, the humidity regulating membrane cover plate 222 is located inside the air duct chamber 21.

[0062] To avoid interference with the pulling of the storage drawer caused by the installation of the drive unit 223 and the humidity-regulating membrane cover 222, it is preferable to place the drive unit 223 and the humidity-regulating membrane cover 222 inside the air duct chamber 21. In this case, the humidity-regulating membrane body 221 covers the outer wall of the air duct chamber 21, or the humidity-regulating membrane body 221 completely fills the interior of the humidity-regulating port 211, and the edge of the humidity-regulating membrane body 221 is sealed to the inner wall of the humidity-regulating port 211, which can minimize the space occupied by the receiving cavity 11.

[0063] As a specific embodiment of this application, please refer to Figure 6 , Figure 7 and Figure 8 The driving component 223 is an electric linkage located inside the air duct chamber 21. It can drive the humidity regulating membrane cover 222 to rise and fall relative to the humidity regulating port 211. When the humidity regulating membrane cover 222 moves upward to a certain distance from the humidity regulating port 211, the humidity regulating port 211 is opened, and moisture can pass through the humidity regulating membrane body 221 and transfer between the air duct chamber 21 and the receiving cavity 11. When the humidity regulating membrane cover 222 moves downward to cover the humidity regulating port 211, the connection between the air duct chamber 21 and the receiving cavity 11 is cut off, and moisture cannot transfer through the humidity regulating membrane body 221.

[0064] In some embodiments of this application, please refer to Figure 3The cooling module 2 includes an air duct cover 23 and a cooling plate 24. The air duct cover 23 is connected to the cooling plate 24. The air duct chamber 21 is formed between the air duct cover 23 and the cooling plate 24. The cooling plate 24 is positioned facing the receiving cavity 11 and can be used to achieve radiative cooling to the interior of the receiving cavity 11.

[0065] At least a portion of the cooling plate 24 is configured as the inner wall of the receiving cavity 11, which can reduce the conduction distance of cold energy between the cooling module 2 and the main body of the compartment 1, thereby improving the cooling efficiency and effect of radiant cooling. A humidity regulating port 211 is opened on the cooling plate 24, and the humidity regulating membrane assembly 22 is connected to the cooling plate 24. This allows only moisture to pass through the cooling plate 24, while preventing cold air from passing through, thus ensuring the radiant cooling effect of the cooling plate 24.

[0066] In some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 In order to increase the radiative cooling area of ​​the cooling module 2 on the cavity 11, it is preferable to place the cooling module 2 on the upper side of the cavity 11 to achieve maximum coverage of the cavity 11.

[0067] In some embodiments of this application, please refer to Figure 3 The interior of the air duct chamber 21 is divided into multiple cooling air ducts by the air duct separator 212. The multiple cooling air ducts extend along the surface of the cooling plate 24 in a winding manner, which can achieve uniform cooling of the cooling plate 24, thereby achieving uniform radiative cooling of each area of ​​the housing cavity 11 by the cooling plate 24.

[0068] The humidity-regulating membrane assembly 22 can be installed in one of the cooling air ducts, which mainly performs the humidification function, while the other cooling air ducts perform the cooling function. The air duct separator 212 achieves physical isolation between the humidification and cooling functions, enabling the functional planning of the cooling plate 24 in different zones. Preferably, the air duct separator 212 is made of thermal insulation material to prevent heat exchange between adjacent cooling air ducts.

[0069] In some embodiments of this application, please refer to Figure 3 Multiple cooling air ducts include a first air duct 213 and a second air duct 214. The first air duct 213 is arranged around the outer periphery of the second air duct 214, making the first air duct 213 located on the outer ring of the second air duct 214. The humidification port 211 is located in the second air duct 214, in the central area of ​​the cooling plate 24, thereby achieving cooling in the outer ring air duct and humidification in the inner ring air duct. The cold airflow in the outer ring air duct surrounds the inner ring humidification air duct, which can ensure a uniform cooling effect inside the housing cavity 11. Positioning the humidification port 211 in the central area of ​​the cooling plate 24 forms a humidification diffusion source, which helps to shorten the transport path of water molecules towards the edge of the housing cavity 11, thereby improving humidification efficiency.

[0070] In the above embodiment, in order for the moisture discharged from the desorption component 32 in the humidity control module 3 to enter the air duct chamber 21, the humidity control module 3 and the cooling module 2 are connected by the air duct connecting component 5, such as... Figure 2 and Figure 4 As shown. The air inlet connector 52 is used to connect with the air inlets of multiple cooling air ducts inside the air duct chamber 21 (such as a first air inlet and a second air inlet, wherein the first air inlet is connected to the first air duct 213 and the second air inlet is connected to the second air duct 214). The air outlet connector 53 is used to connect with the air outlets of multiple cooling air ducts inside the air duct chamber 21 (such as a first air outlet 215 and a second air outlet 216, wherein the first air outlet 215 is connected to the first air duct 213 and the second air outlet 216 is connected to the second air duct 214). Figure 2 and Figure 3 As shown. The air inlet connector 52 and the air outlet connector 53 are respectively connected to the air outlet duct and return duct of the cooling fan, allowing the cooling fan to continuously supply cool air to the air duct chamber 21. The humidity control module 3 is connected to the air inlet connector 52 via the connecting pipe 51, allowing the moisture discharged from the humidity control module 3 to be input into the air duct chamber 21.

[0071] It should be noted that when a specific cooling air duct (such as the second air duct 214) is used for humidification, a partition can be installed inside the air inlet connector 52 to separate the air inlets of multiple cooling air ducts, so that the moisture discharged by the humidification module 3 enters the specific cooling air duct.

[0072] In some embodiments of this application, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 9 The moisture-absorbing component 31 includes a rotatable moisture-absorbing disc 311, which is made of moisture-absorbing material and can absorb moisture inside the receiving cavity 11.

[0073] The desorption assembly 32 includes a heating element 321 and a dehumidifying element 322. The heating element 321 is used to discharge moisture from the moisture-absorbing turntable 311. By heating, the kinetic energy of water molecules on the moisture-absorbing assembly 31 is increased, thus achieving separation from the moisture-absorbing assembly 31. The dehumidifying element 322 is used to extract the discharged moisture from the moisture-absorbing turntable 311 and transport it to the air duct chamber 21, thereby achieving moisture transfer.

[0074] It should be noted that the hot and humid airflow discharged from the humidity control chamber of the humidity control module 3, after entering the air duct chamber 21, can be quickly cooled by the cold airflow and will not adversely affect the cooling effect of the cooling plate 24. If the humidity control port 211 is closed at this time, the high humidity airflow discharged from the humidity control module 3 will be quickly discharged into the return air duct of the refrigeration fan along with the cold airflow, and will not linger or condense inside the air duct chamber 21.

[0075] In some embodiments of this application, when humidification is performed through the second air duct 214, a partition can be provided inside the air inlet connector 52 to separate the airflow entering the first air duct 213 and the second air duct 214. The humidification module 3 is connected to the air inlet connector 52 through the connecting pipe 51, and the airflow containing moisture discharged by the humidification module 3 enters the second air duct 214 in sequence through the connecting pipe 51 and the air inlet connector 52. The cold airflow in the second air duct 214 rapidly cools the hot and humid airflow, which can prevent the hot and humid airflow discharged by the humidification module 3 from affecting the cold airflow in the first air duct 213.

[0076] In some embodiments of this application, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 9 The humidity control module 3 also includes a module housing 33, which forms a humidity control chamber. One end of the module housing 33 is connected to the chamber body 1, and the humidity control chamber is connected to the receiving cavity 11, so that excess moisture inside the receiving cavity 11 can enter the humidity control chamber of the module housing 33 and be absorbed by the moisture absorption component 31.

[0077] The moisture-absorbing turntable 311 is rotatably disposed inside the humidity-regulating chamber, and the humidity-regulating chamber has a desorption chamber inside. The moisture-absorbing turntable 311 can rotate relative to the desorption chamber. The desorption assembly 32 is disposed inside the desorption chamber. The area on the moisture-absorbing turntable 311 corresponding to the desorption chamber is the desorption zone, and the area on the moisture-absorbing turntable 311 located outside the desorption chamber is the moisture-absorbing zone. As the moisture-absorbing turntable 311 rotates, any area on the moisture-absorbing turntable 311 can circulate between the moisture-absorbing zone and the desorption zone. When the area is in the moisture-absorbing zone, it can absorb moisture inside the receiving cavity 11. When the area is in the desorption zone, it can discharge moisture into the desorption chamber through the desorption assembly 32. The desorption chamber is connected to the air duct chamber 21, and the discharged moisture can be transported into the air duct chamber 21.

[0078] During the rotation of the moisture-absorbing turntable 311, any area on the moisture-absorbing turntable 311 is constantly undergoing a moisture absorption-desorption cycle, thereby reducing the humidity inside the containment cavity 11 and preventing condensation, frost, or ice formation inside the fresh food storage room due to excessive humidity, which would affect the refrigeration performance.

[0079] In some embodiments of this application, please refer to Figure 5 and Figure 9 The moisture absorption assembly 31 also includes a rotating shaft assembly 312 connected to the moisture absorption turntable 311. Driven by a motor (not shown in the figure), the rotating shaft assembly 312 can drive the moisture absorption turntable 311 to rotate synchronously, thereby realizing the movement and circulation of any area on the moisture absorption turntable 311 between the moisture absorption zone and the desorption zone.

[0080] In some embodiments of this application, please refer to Figure 5 and Figure 9 The desorption chamber includes a first chamber 331 and a second chamber 332 with their openings facing each other. The two sides of the moisture-absorbing disc 311 abut against the openings of the first chamber 331 and the second chamber 332, respectively, allowing the moisture-absorbing disc 311 to rotate relative to the first and second chambers 331 and 332 while preventing moisture leakage from the gap between the moisture-absorbing disc 311 and the chamber openings. A heating element 321 is disposed inside the first chamber 331, and a desiccant 322 is disposed inside the second chamber 332. The moisture-absorbing disc 311 can be heated from one side, causing moisture to drain from the other side. The moisture is then drawn back by the desiccant 322 on the other side of the disc, improving desorption efficiency. Furthermore, the second chamber 332 is connected to the air duct chamber 21, allowing the drawn-out moisture to be discharged into the air duct chamber 21.

[0081] In some embodiments of this application, please refer to Figure 5 and Figure 9 The heating element 321 is an electric heating component, and the dehumidifying element 322 is a centrifugal fan. Through the cooperation of the heating element 321 and the dehumidifying element 322, the moisture on the desiccant disc 311 can be quickly separated inside the desiccant chamber.

[0082] In some embodiments of this application, please refer to Figure 5 and Figure 9 The module housing 33 includes a housing body 333, a first partition 334, a second partition 335, and an end cap 336. The housing body 333 is an annular housing. The end cap 336 is connected to the side of the housing body 333 away from the chamber body 1, and can be used to enclose a closed space to protect the moisture absorption component 31 and the desorption component 32, while preventing moisture from escaping. The first partition 334 is connected to the housing body 333 and is a fan-shaped structure with an opening, which can be used to form the first chamber 331. The second partition 335 is a fan-shaped flange protruding from the inner surface of the end cap 336, which can be used to form the second chamber 332. The first partition 334 and the second partition 335 respectively abut against the two sides of the moisture absorption turntable 311, which can be used to improve the overall sealing performance of the desorption chamber.

[0083] In some preferred embodiments of this application, the central angles corresponding to the first separator 334 and the second separator 335 are preferably between 90° and 180°, and the first separator 334 is offset from the moisture absorption port 12 to ensure that a large moisture absorption area (such as more than half the area of ​​the moisture absorption turntable 311) is formed on the moisture absorption turntable 311, which can ensure that the moisture absorption turntable 311 has a high moisture absorption area.

[0084] In the above embodiments, the moisture-absorbing turntable 311 can be made of porous materials, such as diatomaceous earth or fiber materials, which can capture water molecules through micropores and pores to achieve efficient moisture absorption.

[0085] In some preferred embodiments of this application, the moisture-absorbing turntable 311 is made of metal-organic frameworks (MOFs), a type of crystalline porous material formed by the self-assembly of inorganic metal centers (metal ions or metal clusters) and organic ligands through coordination bonds, combining the rigidity of inorganic materials with the flexibility of organic materials. Due to their ultra-high specific surface area (up to 10,000 m² / g) and numerous micropore channels, MOFs can achieve rapid moisture absorption, significantly improving their moisture absorption efficiency compared to conventional porous materials. The desorption process, through the input of thermal energy, disrupts the interaction between water molecules and MOFs, achieving moisture desorption and driving rapid moisture release.

[0086] It should be noted that MOFs have extremely high specific surface areas, reaching several thousand square meters per gram or even higher. This allows MOFs to provide more adsorption sites, thereby significantly improving moisture absorption efficiency. When the humidity inside the containment cavity 11 is too high, the porous structure of MOFs enables it to capture and store a large number of water molecules. When the humidity inside the containment cavity 11 is low, the moisture absorption disc 311 can be desorbed while the moisture absorption door 13 is closed, discharging the large number of water molecules stored on the moisture absorption disc 311 into the air duct chamber 21. The moisture is then transferred to the containment cavity 11 through the humidity regulating membrane assembly 22, thus achieving humidification.

[0087] Please see Figures 1 to 10The second aspect of this application provides a humidity control system, including the preservation compartment described in the above embodiments, and further including a detection component 4 and a control component. The detection component 4 includes a humidity detection element 41 and a reflectivity detection element 42 disposed inside the receiving cavity 11. The humidity detection element 41 is used to detect the humidity state inside the receiving cavity 11, thereby determining whether the humidity inside the receiving cavity 11 needs to be adjusted. The reflectivity detection element 42 is used to detect the reflectivity of the inner wall of the receiving cavity 11, and to determine whether there is frost on the inner wall of the receiving cavity 11. The control component is signal-connected to the detection component 4, the cooling module 2, and the humidity control module 3, respectively, and is used to control the cooling module 2 and the humidity control module 3 through the detection information of the detection component 4, thereby realizing the humidity control inside the preservation compartment.

[0088] It should be noted that when the inner wall of the receiving cavity 11 is not frosted, its surface is relatively smooth and has a high reflectivity; however, when the inner wall of the receiving cavity 11 is frosted, the presence of frost makes the surface of the receiving cavity 11 rough, causing the detection light wave emitted by the reflectivity detection element 42 to be scattered at multiple points on the surface of the inner wall of the receiving cavity 11, resulting in a decrease in reflectivity. The control component can determine whether the inner wall of the receiving cavity 11 is frosted by observing the change in reflectivity.

[0089] Compared to other traditional detection methods, detecting frost on the inner wall of the accommodating cavity 11 using the reflectivity detection element 42 can achieve this by emitting light signals and receiving reflected light through optical sensors (such as infrared or laser), eliminating the need for direct contact with the inner wall or frost layer. This avoids the wear, corrosion, or ice adhesion problems caused by long-term contact with mechanical sensors (such as defrosting sensors). Furthermore, reflectivity is strongly correlated with frost thickness and density (the thicker the frost layer, the lower the reflectivity). By establishing a reflectivity-frost thickness model, quantitative monitoring of frost thickness can be achieved, providing data support for precise defrosting.

[0090] In some preferred embodiments of this application, the reflectivity detection element 42 includes an infrared sensor. The infrared sensor emits infrared light of a specific wavelength and receives the light signal reflected from the target surface. By analyzing the intensity or phase change of the reflected light, the state of the frost layer on the inner wall of the accommodating cavity 11 can be inferred. Infrared reflectivity is directly related to the optical properties of the frost layer and is not affected by the temperature fluctuation of the inner wall when the refrigerator door is opened and closed, which can improve the anti-interference capability of the reflectivity detection element 42.

[0091] Since the temperature of the cooling tray 24 is lower than that of the inner wall of other cavities 11, the risk of frost formation is greater. In some embodiments of this application, the reflectivity detection element 42 is used to detect the reflectivity of the surface of the cooling tray 24 facing the cavity 11, thereby realizing the detection of the frost formation status inside the preservation room.

[0092] Please see Figures 1 to 10The third aspect of this application provides a refrigeration device, including the preservation chamber described in the above embodiments. The humidity inside the preservation chamber can be adjusted by the humidity control module 3 and the humidity control membrane assembly 22, so that the food inside the storage cavity 11 is in a suitable humidity storage environment.

[0093] Alternatively, the refrigeration equipment may include the humidity control system described in the above embodiments, which can achieve intelligent control of the humidity control module 3 and the cooling module 2 through the detection component 4 and the control component, thereby realizing automated humidity control and defrosting.

[0094] Please see Figures 1 to 10 The fourth aspect of this application provides a humidity control method, which employs the humidity control system described in the above embodiments, and includes the following steps:

[0095] Step 1: Detect the humidity H inside the cavity 11 and the reflectivity R of the inner wall of the cavity 11; specifically, the humidity inside the cavity 11 is monitored in real time by the humidity detection device 41, and the reflectivity of the inner wall of the cavity 11 (such as the lower surface of the cooling plate 24) is monitored in real time by the reflectivity detection device 42, and the detection information is fed back to the control component in real time.

[0096] Step 2: Identify the humidity and frosting conditions inside the containment cavity 11 based on humidity and reflectivity, respectively. The humidity conditions include high humidity, normal humidity, and low humidity, used to characterize the moisture content inside the containment cavity 11. When the real-time monitored humidity H is above the first humidity threshold H1, the moisture content inside the containment cavity 11 is excessive, indicating a high humidity state. When the humidity H is below the second humidity threshold H2, the moisture content inside the containment cavity 11 is insufficient, indicating a low humidity state. When the humidity H is between H2 and H1 (i.e., H2 < H < H1), the moisture content inside the containment cavity 11 is suitable, indicating a normal humidity state. The frosting condition is further divided into a frosted state and a non-frosted state.

[0097] Step 3: Control the humidification module 3 and the cooling module 2 according to the frosting and humidity status to achieve moisture absorption, humidification, or defrosting operations inside the receiving cavity 11, such as... Figure 10 As shown.

[0098] Specifically, determine whether the humidity state is high or low. If the humidity state is high (i.e., H≥H1), turn on the humidity control module 3, open the moisture absorption door 13, so that the moisture absorption component 31 in the humidity control module 3 is connected to the interior of the receiving cavity 11 through the moisture absorption port 12, and close the humidity control membrane cover 222 in the humidity control membrane assembly 22.

[0099] At this time, the moisture-absorbing disc 311 absorbs excess moisture inside the receiving cavity 11, thereby reducing the humidity inside the receiving cavity 11; the desorption component 32 discharges the moisture absorbed on the moisture-absorbing disc 311, preventing the moisture-absorbing disc 311 from reaching a moisture saturation state, thus ensuring the moisture absorption capacity of the moisture-absorbing disc 311. The discharged hot and humid airflow flows into the air duct chamber 21. Due to the closing of the humidity-regulating membrane cover 222, the high-humidity airflow returns to the return air duct of the refrigeration fan along with the cold airflow in the air duct chamber 21. When the humidity H < H1, the moisture-absorbing door 13 and the humidity-regulating module 3 are closed, and the receiving cavity 11 returns to the normal humidity state.

[0100] If the humidity is low (H≤H2), open the humidity-regulating membrane cover 222 of the humidity-regulating membrane assembly 22 to open the moisture transfer channel between the air duct chamber 21 and the receiving cavity 11. The humidity-regulating membrane body 221 can absorb moisture inside the air duct chamber 21 and transfer the moisture to the receiving cavity 11, which has lower humidity. Keep the moisture-absorbing door 13 closed, cut off the connection between the moisture-absorbing assembly 31 and the receiving cavity 11, and then turn on the humidity-regulating module 3. The desorption assembly 32 separates and transports the moisture stored on the moisture-absorbing turntable 311. After a preset time, the moisture on the moisture-absorbing turntable 311 is completely discharged into the air duct chamber 21. Then, turn off the humidity-regulating module 3 to avoid increasing the energy consumption of the refrigeration equipment by continuously running the humidity-regulating module 3. When the humidity H>H2, close the humidity-regulating membrane cover 222 of the humidity-regulating membrane assembly 22 to cut off the moisture transfer channel, and the receiving cavity 11 returns to the normal humidity state.

[0101] It should be noted that part of the moisture absorbed by the humidity-regulating membrane body 221 comes from the moisture stored on the moisture-absorbing turntable 311, and the other part can come from the moisture carried by the outdoor airflow. After the outdoor airflow is drawn in by the cooling fan, it is cooled and then transported to the air outlet duct and the duct chamber 21. When the humidity-regulating membrane cover 222 is open, it can provide moisture to the duct chamber 21 and the humidity-regulating membrane assembly 22, thereby achieving humidification of the receiving cavity 11.

[0102] The frost condition is determined by the real-time monitored reflectance R. Specifically, the detected real-time reflectance R is compared with the preset reflectance threshold R1. If R≤R1, it is determined to be in a frosty state. If the frost condition is in a frosty state, the cooling module 2 is turned off to stop the cooling, and the humidity control module 3 and the moisture absorption door 13 are turned on at the same time.

[0103] After the cooling module 2 is turned off, cooling stops. The inner wall of the receiving cavity 11 (such as the lower surface of the cooling plate 24) undergoes sublimation defrosting due to increased temperature and decreased humidity, thus performing a defrosting operation. The moisture generated during defrosting is absorbed by the moisture-absorbing disc 311. The desorption component 32 decomposes and absorbs the water on the moisture-absorbing disc 311 and guides it into the air duct chamber 21 through the dehumidification component 322. Since the humidity-regulating membrane cover 222 of the humidity-regulating membrane component 22 is closed at this time, the high-humidity airflow inside the air duct chamber 21 enters the evaporator and removes the moisture through frosting. When R > R1, the inside of the receiving cavity 11 returns to an unfrosted state, and the cooling module 2 is turned on for normal cooling.

[0104] It should be noted that during the defrosting process, the high-humidity airflow discharged from the desorption chamber can also be directly discharged to the outside through the bypass channel, thus achieving the purpose of this application.

[0105] In the above embodiment, R1 = R0 - k·ΔR, where R0 is the reference reflectivity, determined by the manufacturing material of the inner wall of the receiving cavity 11, and is the reflectivity when the inner wall surface (such as the lower surface of the cooling plate 24) is smooth. k is a safety factor, which can be selected as a specific constant based on experience to allow for a certain degree of tolerance in the threshold setting. ΔR is the reflectivity reduction limit, which can be set based on experience. The preset reflectivity threshold R1 set in this way can ensure the detection of the frosting state while leaving a certain degree of tolerance. By reserving a margin for reflectivity fluctuations through the safety factor k, defrosting is triggered only when the reflectivity is less than R1. Compared with the fixed time interval defrosting operation in the prior art, the number of invalid defrostings can be greatly reduced, avoiding frequent defrosting that leads to thermal expansion and contraction of the evaporator pipes and accelerates material fatigue.

[0106] In some specific embodiments of this application, H1 = 98%, H2 = 80%, k = 0.9, and R0 = 80%.

[0107] It should be noted that the determination of humidity H and reflectivity R can be performed simultaneously or in steps. As long as the determination of humidity and frosting conditions can be achieved, the purpose of this application can be achieved.

[0108] In some embodiments of this application, the humidity state is first determined by the humidity H, and then the frost state is determined by the reflectivity R. This is because the receiving cavity 11 has a high risk of condensation, frost and ice formation under high humidity conditions. The receiving cavity 11 can be dehumidified first to avoid further aggravation of the frost state.

[0109] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0110] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0111] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fresh food compartment characterized by, include: The main body of the compartment (1) has a receiving cavity (11) formed inside it; A cooling module (2) is disposed on the side wall of the main body of the compartment (1) and is used to radiate cooling to the receiving cavity (11). The cooling module (2) includes an air duct chamber (21) and a humidity regulating membrane assembly (22). The air duct chamber (21) has a humidity regulating port (211) communicating with the receiving cavity (11). The humidity regulating membrane assembly (22) completely covers the humidity regulating port (211). The humidity control module (3) includes a humidity control chamber separated from the receiving cavity (11). The humidity control chamber is connected to the receiving cavity (11) and the air duct chamber (21). The humidity control chamber is provided with a moisture absorption component (31) and a desorption component (32). The moisture absorption component (31) is used to absorb the moisture inside the receiving cavity (11), and the desorption component (32) is used to transport the moisture absorbed by the moisture absorption component (31) to the air duct chamber (21).

2. The fresh food compartment according to claim 1, characterized in that The inner wall of the main body of the chamber (1) is provided with a moisture absorption port (12), the humidity control module (3) is located outside the receiving cavity (11), and the humidity control chamber is connected to the receiving cavity (11) through the moisture absorption port (12); The moisture-absorbing port (12) is provided with an openable and closable moisture-absorbing door (13).

3. The fresh food compartment according to claim 1, characterized in that, The humidity regulating membrane assembly (22) includes a humidity regulating membrane body (221) and a humidity regulating membrane cover (222). The humidity regulating membrane body (221) completely covers the humidity regulating port (211). The humidity regulating membrane cover (222) is movably disposed at the humidity regulating port (211). The humidity regulating membrane cover (222) is used to realize the opening and closing of the humidity regulating port (211).

4. The fresh food compartment according to claim 1, characterized in that, The cooling module (2) includes an air duct cover (23) and a cooling plate (24). The air duct cover (23) is connected to the cooling plate (24), and the air duct chamber (21) is formed between the air duct cover (23) and the cooling plate (24). At least a portion of the cooling plate (24) is configured as the inner wall of the receiving cavity (11), the humidity regulating port (211) is opened on the cooling plate (24), and the humidity regulating membrane assembly (22) is connected to the cooling plate (24).

5. The fresh food compartment according to claim 4, characterized in that The interior of the air duct chamber (21) is divided into multiple cooling air ducts by the air duct separator (212). The multiple cooling air ducts include a first air duct (213) and a second air duct (214). The first air duct (213) is arranged around the outer periphery of the second air duct (214), and the humidity regulating port (211) is arranged in the second air duct (214).

6. The fresh food compartment according to any one of claims 1 to 5, characterized in that The moisture absorption assembly (31) includes a rotatable moisture absorption turntable (311), and the desorption assembly (32) includes a heating element (321) and a dehumidifying element (322). The heating element (321) is used to discharge moisture from the moisture absorption turntable (311), and the dehumidifying element (322) is used to extract the discharged moisture from the moisture absorption turntable (311) and transport it to the air duct chamber (21).

7. The fresh food compartment according to claim 6, characterized in that The humidity control module (3) also includes a module housing (33), the humidity control chamber is formed inside the module housing (33), one end of the module housing (33) is connected to the chamber body (1), and the humidity control chamber is connected to the receiving cavity (11); The moisture-absorbing turntable (311) is rotatably disposed inside the humidity-regulating chamber, which has a desorption chamber. The moisture-absorbing turntable (311) can rotate relative to the desorption chamber. The desorption assembly (32) is disposed inside the desorption chamber, which is connected to the air duct chamber (21).

8. The fresh food compartment according to claim 7, characterized in that The desorption chamber includes a first chamber (331) and a second chamber (332) with their openings facing each other. The two sides of the moisture-absorbing turntable (311) abut against the openings of the first chamber (331) and the second chamber (332), respectively. The heating element (321) is disposed inside the first chamber (331), and the dehumidifying element (322) is disposed inside the second chamber (332). The second chamber (332) is connected to the air duct chamber (21).

9. The fresh food compartment according to claim 6, characterized in that The moisture-absorbing turntable (311) is made of a metal-organic framework compound.

10. A humidity conditioning system, characterized by The system includes a preservation compartment as described in any one of claims 1 to 9, and further includes a detection component (4) and a control component. The detection component (4) includes a humidity detection element (41) and a reflectance detection element (42) disposed inside the containment cavity (11). The reflectance detection element (42) is used to detect the reflectance of the inner wall of the containment cavity (11). The control component is connected to the detection component (4), the cooling module (2), and the humidity control module (3) respectively.

11. A refrigeration appliance characterized in that, Includes the fresh-keeping compartment as described in any one of claims 1 to 9; Alternatively, it may include the humidity control system as described in claim 10.

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