Fresh-keeping device and refrigerator

Abstract

The invention provides a fresh-keeping device and a refrigerator. The fresh-keeping device comprises a fresh-keeping container in which a fresh-keeping space is formed; the shelf is arranged in the fresh-keeping space and comprises a shelf plate set, the shelf plate set comprises a plurality of shelf plates which are arranged in a tiled mode, and each shelf plate is provided with a plurality of food material supports used for bearing food materials; the plurality of shelf plates are hinged in sequence, and each shelf plate can be folded to another shelf plate around the hinged part, so that the food material supports of the two shelf plates are buckled up and down to accommodate food materials. The storage rack has the advantages that the storage rack has a folding function, the space occupation of the storage rack is reduced, and the utilization rate of a fresh-keeping space is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of food preservation, and particularly to a preservation device and a refrigerator. Background Art

[0002] With the improvement of the material living standard, eggs have become a common food ingredient in families. To improve the preservation quality of eggs and extend their preservation duration, users usually store eggs in the refrigerating compartment of a refrigerator and set an egg body shelf in the refrigerating compartment to support the eggs.

[0003] Most of the existing egg body shelves are of a fixed structure. When there are fewer eggs stored, since the egg body shelf cannot be folded and stored, to a certain extent, this will affect the space occupation of the refrigerating compartment and reduce the space utilization rate of the refrigerating compartment. Therefore, there is still room for improvement. Summary of the Invention

[0004] One object of the present invention is to enable the shelf to have a folding function to improve the utilization rate of the preservation space.

[0005] Another further object of the present invention is to prevent the shelf from slipping off the drawer body.

[0006] Another further object of the present invention is to improve the stability of the shelf on the drawer body.

[0007] In particular, according to the first aspect of the present invention, there is provided a preservation device, including:

[0008] A preservation container, in which a preservation space is formed; and

[0009] A shelf, disposed in the preservation space, which includes a set of placing plates, the set of placing plates includes a plurality of placing plates arranged flatly, each of the placing plates has a plurality of food supports for supporting food ingredients; and

[0010] The plurality of placing plates are sequentially hinged, and each placing plate can be folded around its hinge to another placing plate, so that the food supports of the two placing plates are buckled up and down to accommodate the food ingredients.

[0011] Optionally, the preservation container is a drawer-type container, which includes a drawer body and a drawer sleeve, the drawer body has an opening at the top, the drawer sleeve has a lateral opening, the drawer body is slidably disposed in the drawer sleeve through the lateral opening, and together with the drawer sleeve, defines the preservation space.

[0012] Optionally, the shelf is buckled on the top opening of the drawer body as a drawer cover plate, each placing plate extends along the front-back direction of the drawer body, and the plurality of placing plates are sequentially arranged along the left-right direction of the drawer body.

[0013] Optionally, the shelf further includes two first limiting plates disposed on the left and right sides of the shelf plate group. When the shelf is buckled on the top opening of the drawer body, the two first limiting plates respectively extend downward to the outside of the left side wall and the outside of the right side wall of the drawer body to perform left and right limiting on the shelf plate group.

[0014] Optionally, the shelf further includes at least two second limiting plates disposed on the front and rear sides of the shelf plate group. When the shelf is buckled on the top opening of the drawer body, the at least two second limiting plates respectively extend downward to the inside of the front side wall and the inside of the rear side wall of the drawer body to perform front and rear limiting on the shelf plate group.

[0015] Optionally, second limiting plates are formed on the front and rear sides of each shelf plate, and a limiting slot for accommodating the left side wall or the right side wall of the drawer body is formed between the first limiting plate and the adjacent second limiting plate.

[0016] Optionally, a buffer gasket is disposed on the top of the shelf plate around the foodstuff tray.

[0017] Optionally, the bottom of the foodstuff tray has air-permeable holes penetrating downward.

[0018] Optionally, a water-absorbing gasket is disposed on the bottom of the foodstuff tray around the air-permeable holes.

[0019] According to a second aspect of the present invention, there is provided a refrigerator including the freshness preservation device according to any one of the above.

[0020] In the freshness preservation device of the present invention, a freshness preservation space is formed in the freshness preservation container, the shelf is disposed in the freshness preservation space, a plurality of shelf plates of the shelf are arranged in a flat manner and are sequentially hinged, and each shelf plate can be folded over to another shelf plate around its hinge so that the foodstuff trays of the two shelf plates are buckled up and down to accommodate foodstuffs. Thus, when there are fewer foodstuffs stored on the shelf, the idle shelf plates in the shelf can be folded and stored, thereby reducing the space occupied by the shelf and improving the utilization rate of the freshness preservation space.

[0021] Furthermore, in the freshness preservation device of the present invention, two first limiting plates of the shelf are located on the left and right sides of the shelf plate group, and at least two second limiting plates of the shelf are located on the front and rear sides of the shelf plate group. When the shelf is buckled on the top opening of the drawer body, the two first limiting plates can perform left and right limiting on the shelf plate group, and the at least two second limiting plates can perform front and rear limiting on the shelf plate group. Thus, the shelf can be prevented from accidentally slipping off the drawer body, ensuring the reliability of the shelf during use.

[0022] Furthermore, in the fresh-keeping device of the present invention, second limiting plates are formed on both the front and rear sides of each shelf, and a limiting slot for accommodating the left or right side wall of the drawer body is formed between the first limiting plate and the adjacent second limiting plate. In this way, when the shelf is buckled on the top opening of the drawer body, the left and right side walls of the drawer body can be inserted into the limiting slots respectively, which can prevent multiple shelves from rotating due to uneven load-bearing and is beneficial to maintaining the stability of the shelf on the drawer body.

[0023] From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more apparent about the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0025] Figure 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

[0026] Figure 2 is a schematic perspective view of a fresh-keeping device according to an embodiment of the present invention;

[0027] Figure 3 is a schematic state diagram of the shelf after being folded according to an embodiment of the present invention;

[0028] Figure 4 is a schematic state diagram of the shelf after being folded according to another embodiment of the present invention;

[0029] Figure 5 is a schematic assembly diagram of the drawer body and the shelf according to an embodiment of the present invention;

[0030] Figure 6 is a schematic top view of the drawer body and the shelf according to an embodiment of the present invention;

[0031] Figure 7 is Figure 6 a schematic cross-sectional view along the A-A direction;

[0032] Figure 8 is Figure 6 a schematic cross-sectional view along the B-B direction;

[0033] Figure 9 is a schematic cross-sectional view of the food tray according to an embodiment of the present invention;

[0034] Figure 10 is a schematic structural diagram of a modified atmosphere module according to an embodiment of the present invention;

[0035] Figure 11 is a schematic principle diagram of an electro-deoxygenation device according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] 10, refrigerator; 110, cabinet; 111, refrigerating compartment; 112, freezing compartment; 120, door body; 20, fresh-keeping device; 210, fresh-keeping container; 221, drawer body; 212, drawer sleeve; 213, fresh-keeping space; 220, shelf; 221, storage board; 222, first limiting plate; 223, second limiting plate; 224, food tray; 225, limiting slot; 226, buffer gasket; 227, ventilation hole; 228, water absorption gasket; 229, hinge; 230, electro-deoxygenation device; 231, housing; 232, communication port; 233, cathode plate; 234, anode plate; 235, liquid storage cavity; 236, liquid replenishing box; 237, water pipe; 238, water pump; 239, exhaust port; 240, carbon dioxide supply device; 241, gas cylinder; 242, connecting pipe; 243, solenoid valve. Detailed Description of the Invention

[0038] Reference will now be made in detail to the embodiments of the present invention, one or more examples of which are shown in the accompanying drawings. Each of the embodiments provided is intended to explain the present invention, not to limit the present invention. In fact, various modifications and variations of the present invention will be apparent to those skilled in the art without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still another embodiment. Accordingly, the present invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0039] Reference will now be made to Figures 1 to 11 to describe the fresh-keeping device 20 and the refrigerator 10 according to the embodiments of the present invention. Among them, the orientation or positional relationship indicated by "inside", "outside", "above", "below", "top", "bottom", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. For the convenience of schematically showing the structure of the device, some of the drawings of the present invention are shown in a perspective form.

[0040] In the description of this embodiment, it should be understood that the meaning of the term "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features can be further included.

[0041] In the description of this embodiment, the descriptions referring to terms such as "one embodiment", "some embodiments", "some examples", "one example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The present invention provides a refrigerator 10, Figure 1 which is a schematic structural diagram of the refrigerator 10 according to an embodiment of the present invention, as Figure 1 shown, the refrigerator 10 generally may include a cabinet 110 and a door body 120.

[0043] Wherein, one or more storage compartments are formed inside the cabinet 110, and the storage compartments can be configured into a refrigerating compartment 111, a freezing compartment 112, a variable temperature compartment, etc. according to the refrigeration temperature. Specifically, the functions, quantities and layout modes of the storage compartments can be configured according to actual needs.

[0044] The door body 120 can be a single-opening door or a double-opening door. The door body 120 is correspondingly arranged on the front side of each storage compartment and is pivotally connected to the cabinet 110 for controllably opening or closing the storage compartment.

[0045] The refrigerator 10 may further include a freshness preservation device 20, Figure 2 which is a schematic perspective view of the freshness preservation device 20 according to an embodiment of the present invention, as Figure 2 shown, the freshness preservation device 20 may include a freshness preservation container 210 and a shelf 220.

[0046] Wherein, a freshness preservation space 213 is formed inside the freshness preservation container 210. The freshness preservation space 213 can be a closed space, and its internal temperature, internal humidity, etc. can be artificially adjusted to provide suitable temperature conditions and humidity conditions for the storage of food materials, so as to improve the freshness preservation quality of the food materials and extend the freshness preservation duration.

[0047] The shelf 220 is disposed within the fresh-keeping space 213 and is used for placing the ingredients to be fresh-kept. The ingredients to be fresh-kept can be of the same type or different types. Moreover, the shelf 220 has a folding function. When it is in the folded state, fewer ingredients can be placed; when it is in the unfolded state, more ingredients can be placed.

[0048] In some alternative embodiments, the fresh-keeping container 210 can be disposed within the storage compartment of the refrigerator 10, or can also be disposed outside the cabinet 110 of the refrigerator 10, or can further be embedded within the cabinet 110 of the refrigerator 10 as an independent compartment.

[0049] In one example, the fresh-keeping container 210 can be a drawer-type container, which includes a drawer body 221 and a drawer sleeve 212. The drawer body 221 has an opening at the top, and the drawer sleeve 212 has a lateral opening. The drawer body 221 is slidably disposed within the drawer sleeve 212 through the lateral opening and, together with the drawer sleeve 212, defines the fresh-keeping space 213.

[0050] That is to say, as an independent compartment of the refrigerator 10, the drawer sleeve 212 of the fresh-keeping container 210 is embedded within the cabinet 110 and can serve as the fresh-keeping inner liner of the cabinet 110. When the user takes and places ingredients, by pushing and pulling the drawer body 221, the taking and placing operations can be made more convenient.

[0051] In a typical example, referring to Figure 1 , a refrigerating compartment 111 can be formed in the upper region of the cabinet 110, a freezing compartment 112 can be formed in the lower region, and the number of the fresh-keeping devices 20 can be two. The fresh-keeping containers 210 of the two fresh-keeping devices 20 are arranged side by side left and right between the refrigerating compartment 111 and the freezing compartment 112.

[0052] Figure 3 is a schematic state diagram after the shelf 220 is folded according to an embodiment of the present invention, Figure 4 is a schematic state diagram after the shelf 220 is folded according to another embodiment of the present invention. As shown in Figure 3 and Figure 4 shown, the shelf 220 can include a set of shelf boards 221.

[0053] Wherein, the set of shelf boards 221 can include a plurality of shelf boards 221 arranged flatly. Each shelf board 221 has a plurality of ingredient holders 224, and the ingredient holders 224 are mainly used for supporting the ingredients. The plurality of shelf boards 221 are sequentially hinged, and each shelf board 221 can be folded onto another shelf board 221 around its hinge point, so that the ingredient holders 224 of the two shelf boards 221 are buckled up and down to accommodate the ingredients.

[0054] Thus, each shelf 221 can be flexibly turned over. When there is less food on the shelf 220, the idle shelf 221 in the shelf 220 can be folded up for storage, so as to reduce the space occupied by the shelf 220, so that more food can be accommodated in the fresh-keeping space 213 and the utilization rate of the fresh-keeping space 213 can be improved.

[0055] As Figure 3 shown, if only one shelf 221 in the shelf 221 group is idle, only this shelf 221 can be turned up. As Figure 4 shown, if two shelves 221 in the shelf 221 group are idle, these two shelves 221 can be turned up simultaneously. In this way, a certain space can be left on one side of the shelf 220 for storing other food.

[0056] In an alternative embodiment, the shelf 220 can be buckled on the top opening of the drawer body 221 as a drawer cover plate. This can form a sandwich space between the shelf 220 and the bottom wall of the drawer body 221, and some food with long-term storage requirements or food that is easily damaged by extrusion can be placed in the sandwich space for storage.

[0057] Figure 5 is a schematic assembly diagram of the drawer body 221 and the shelf 220 according to an embodiment of the present invention. As Figure 5 shown, each shelf 221 can extend along the front-back direction of the drawer body 221, and a plurality of shelves 221 are arranged in sequence along the left-right direction of the drawer body 221. Of course, in some other examples, each shelf 221 can also extend along the left-right direction of the drawer body 221, and a plurality of shelves 221 are arranged in sequence along the front-back direction of the drawer body 221.

[0058] Figure 6 is a schematic top view of the drawer body 221 and the shelf 220 according to an embodiment of the present invention. Figure 7 is Figure 6 a schematic cross-sectional view along the A-A direction. Figure 8 is Figure 6 a schematic cross-sectional view along the B-B direction.

[0059] As Figures 6 to 8 shown, the shelf 220 may further include two first limit plates 222, and the two first limit plates 222 are arranged on the left and right sides of the shelf 221 group. When the shelf 220 is buckled on the top opening of the drawer body 221, the two first limits respectively extend downward to the outside of the left side wall and the outside of the right side wall of the drawer body 221 to perform left and right limits on the shelf 221 group.

[0060] That is to say, the distance between the two first limiting plates 222 is slightly greater than the width of the drawer body 221. In this way, when the shelf 220 is buckled on the top opening of the drawer body 221, the two first limiting plates 222 are equivalent to clamping the drawer body 221 from the left and right sides of the drawer body 221, thereby preventing the shelf 221 group from shaking left and right relative to the drawer body 221 during the process of pushing and pulling the drawer body 221.

[0061] Furthermore, the shelf 220 may further include at least two second limiting plates 223, which are arranged on the front and rear sides of the shelf 221 group, and when the shelf 220 is buckled on the top opening of the drawer body 221, they respectively extend downward to the inner sides of the front side wall and the rear side wall of the drawer body 221 to perform front and rear limiting on the shelf 221 group.

[0062] That is to say, the distance between the two second limiting plates 223 is slightly smaller than the length of the drawer body 221. In this way, when the shelf 220 is buckled on the top opening of the drawer body 221, the two second limiting plates 223 can extend into the drawer body 221, and during the process of pushing and pulling the drawer body 221, by abutting against the inner side of the front side wall or the inner side of the rear side wall of the drawer body 221, the whole shelf 220 can be prevented from accidentally slipping off in the front and rear directions of the drawer body 221.

[0063] In an alternative embodiment, adjacent shelves 221 can be hinged by one or more hinge members. The hinge members can have a stop function, that is, restricting the relative rotation between the two shelves 221 in the locked state and allowing the relative rotation between the two shelves 221 in the unlocked state. In this way, when the shelf 220 is buckled on the top opening of the drawer body 221 as a drawer cover plate, the shelves 221 can be prevented from rotating and sinking due to their own weight and the weight of the food ingredients, which is beneficial to maintaining the horizontal unfolded state of each shelf 221.

[0064] Considering that the manufacturing cost of the above-mentioned hinge members with a stop function is relatively high, in order to save the manufacturing cost, only ordinary hinges 229 are used as hinge members in this embodiment.

[0065] In an alternative embodiment, second limiting plates 223 are formed on the front and rear sides of each shelf 221, and a limiting slot 225 for accommodating the left side wall or the right side wall of the drawer body 221 is formed between the first limiting plate 222 and the adjacent second limiting plate 223.

[0066] For the first limiting plate 222 on the left or right side, there are the above-mentioned limiting slots 225 between it and the two adjacent second limiting plates 223 in the front and back. When the shelf 220 is buckled on the top opening of the drawer body 221 as a drawer cover plate, the limiting slots 225 can clamp the left and right side walls of the drawer body 221, so as to limit the overall width of the group of the storage plates 221, thereby preventing the group of the storage plates 221 from rotating and sinking due to its own weight and the weight of the food materials.

[0067] Referring to Figure 6 , the left and right side walls of the drawer body 221 can gradually incline inwards from top to bottom, so that the drawer body 221 is in a gradually shrinking shape from top to bottom. The side wall of the drawer body 221 where the limiting slot 225 is located (that is, the side of the second limiting plate 223 adjacent to the limiting slot 225) can gradually incline inwards from top to bottom, and its inclination angle is consistent with the inclination angle of the left or right side wall of the drawer body 221.

[0068] In this way, when the shelf 220 is buckled on the top opening of the drawer body 221 as a drawer cover plate, the side wall of the limiting slot 225 located in the drawer body 221 can support on the left or right side wall of the drawer body 221, so that multiple storage plates 221 can better carry the food materials and will not have the problem of rotating and sinking due to uneven distribution of the weight of the food materials.

[0069] Referring to Figure 7 , the upper edges of the left and right side walls of the drawer body 221 can gradually incline upwards from back to front. In this way, when the drawer body 221 is pulled outwards, the sinking amount of the drawer body 221 can be compensated, so that the whole shelf 220 is in a horizontal state, which is more conducive to taking and placing food materials to a certain extent.

[0070] When the shelf 220 needs to be folded, the shelf 220 will no longer be used as the drawer cover plate of the drawer body 221. At this time, the folding operation can be performed on the storage plate 221 to be folded, and then the whole shelf 220 is offset to one side of the drawer body 221 to leave space for the other side of the drawer body 221 to store other food materials.

[0071] Since there are second limiting plates 223 on both the front and back sides of each storage plate 221, the length of the second limiting plate 223 can be set to be greater than the depth of the food material tray 224. In this way, the storage plate 221 can be stably supported on the bottom wall of the drawer body 221 by the two second limiting plates 223 in the front and back.

[0072] Figure 9 is a schematic cross-sectional view of the food material tray 224 according to an embodiment of the present invention, as Figure 9As shown, the food tray 224 can be formed by recessing downward from the top of the shelf 221, that is, the food tray 224 and the shelf 221 are integrally formed. This forming method can improve the connection stability between the food tray 224 and the shelf 221, reduce the problem of breakage between the food tray 224 and the shelf 221, and extend the service life of the food tray 224.

[0073] The interior of the food tray 224 can be in the shape of an arc-shaped groove, and its specific dimensions can be designed according to the actual food to be preserved. In this way, when supporting spherical or quasi-spherical food, it can prevent the food from rolling freely and avoid damage to the food due to collision.

[0074] A buffer gasket 226 surrounding the food tray 224 can be provided on the top of the shelf 221. The buffer gasket 226 can be a soft rubber gasket, and the lower edge of the buffer gasket 226 can be smoothly connected to the upper edge of the food tray 224. By providing the buffer gasket 226, it can prevent the upper edge of the food tray 224 from bumping into the food and causing damage to the food, which is beneficial to ensuring the safe storage of the food.

[0075] Vent holes 227 penetrating downward can be provided at the bottom of the food tray 224. The vent holes 227 can allow the food to carry out respiration, prevent local hypoxia necrosis of the food, and are beneficial to improving the fresh-keeping quality of the food.

[0076] Furthermore, a water-absorbing gasket 228 surrounding the vent holes 227 can be provided at the bottom of the food tray 224, and the water-absorbing gasket 228 can be adhered to the inner wall of the food tray 224. Since the fresh-keeping temperature of the food is usually relatively low, in some cases, condensed water will adhere to the surface of the food. By adding the water-absorbing gasket 228 to adsorb the condensed water, the surface of the food can be kept dry, the growth of bacteria can be reduced, and it is beneficial to improve the fresh-keeping quality of the food.

[0077] In an alternative embodiment, the fresh-keeping device 20 can further include an air-conditioning module. The air-conditioning module includes an electrolytic deoxygenation device 230. The electrolytic deoxygenation device 230 can be disposed in the fresh-keeping space 213, or an installation opening can be formed on the wall of the fresh-keeping space 213, and the electrolytic deoxygenation device 230 can be snap-fitted into the installation opening. The electrolytic deoxygenation device 230 is mainly used to remove part of the oxygen in the fresh-keeping space 213, so as to form a low-oxygen atmosphere in the fresh-keeping space 213, thereby inhibiting the respiration of the food, reducing the decomposition of organic substances in the food, improving the fresh-keeping quality of the food, and extending the fresh-keeping duration.

[0078] Figure 10 is a schematic structural diagram of an air-conditioning module according to an embodiment of the present invention, Figure 11 is a schematic principle diagram of the electrolytic deoxygenation device 230 according to an embodiment of the present invention. Refer to Figures 10 to 11, the electro-deaeration device 230 may include a housing 231, a cathode plate 233, and an anode plate 234.

[0079] Among them, the housing 231 is generally in the shape of a flat cuboid, and one side wall (such as the bottom wall) of the housing 231 with the largest area can be opened to form a communication port 232, which is beneficial to increasing the contact area between the cathode plate 233 of the electro-deaeration device 230 and the fresh-keeping space 213.

[0080] The cathode plate 233 is arranged at the communication port 232 to jointly define a liquid storage cavity 235 for containing electrolyte with the housing 231, and is used to consume the oxygen in the fresh-keeping space 213 through an electrochemical reaction under the action of an electrolytic voltage. The cathode plate 233 is arranged at the communication port 232, and the cathode plate 233 has a waterproof and breathable function (such as a waterproof and breathable membrane). While closing the liquid storage cavity 235, it can ensure the air flow communication between the cathode plate 233 and the fresh-keeping space 213. For example, the oxygen in the fresh-keeping space 213 can undergo a reduction reaction at the cathode plate 233, that is: O2 + 2H2O + 4e- → 4OH-. The electrolyte contained in the liquid storage cavity 235 can be an acidic aqueous solution or an alkaline aqueous solution. For example, it can be a 1-5 mol / L sodium hydroxide solution.

[0081] The anode plate 234 is arranged in the liquid storage cavity 235 and is used to provide reactants to the cathode plate 233 through an electrochemical reaction. The anode plate 234 and the cathode plate 233 are arranged at intervals in the liquid storage cavity 235. And when powered on, the anode plate 234 is used to provide reactants (such as electrons) to the cathode plate 233 through an electrochemical reaction and generate oxygen. For another example, the OH- generated by the cathode plate 233 can undergo an oxidation reaction at the anode plate 234 and generate oxygen, that is: 4OH- → O2 + 2H2O + 4e-. An exhaust port 239 can also be opened on the housing 231 (such as the top wall), and the oxygen can be discharged through the exhaust port 239.

[0082] The above examples of the electrochemical reactions of the anode plate 234 and the cathode plate 233 are only illustrative. Based on understanding the above embodiments, those skilled in the art should easily change the types of electrochemical reactions, and these changes should all fall within the protection scope of the present invention.

[0083] In one example, the exhaust port 239 can be connected to the external environment of the refrigerator 10, and the oxygen separated by the electro-deaeration device 230 can be discharged from the refrigerator 10 through the exhaust port 239. In some other embodiments, the exhaust port 239 can also be connected to the refrigerating compartment 111 or the freezing compartment 112 of the refrigerator 10, so that the refrigerating compartment 111 or the freezing compartment 112 becomes an "oxygen-rich compartment", that is, increasing the oxygen content in the refrigerating compartment 111 or the freezing compartment 112. In this way, users can store "oxygen-loving" food materials in the oxygen-rich space to obtain better storage effects.

[0084] Further, the electrolytic deoxidation device 230 may further include a liquid replenishing box 236, a water pipe 237, and a water pump 238. Among them, the positions of the liquid replenishing box 236, the water pipe 237, and the water pump 238 can be arranged pertinently according to actual needs. The liquid replenishing box 236 is filled with electrolyte, the water pipe 237 communicates the liquid replenishing box 236 with the liquid storage cavity 235, the water pump 238 is arranged on the water pipe 237, and after the water pump 238 is started, the electrolyte in the liquid replenishing box 236 can be smoothly transported to the liquid storage cavity 235 to achieve liquid replenishment.

[0085] Refer to Figure 10 , the gas conditioning module may further include a carbon dioxide supply device 240. The second oxidation supply device is in air flow communication with the fresh-keeping space 213. By using the carbon dioxide supply device 240, carbon dioxide can be introduced into the fresh-keeping space 213, thereby increasing the carbon dioxide content in the fresh-keeping space 213, which can significantly inhibit the respiration of the food materials and improve the fresh-keeping quality of the food materials.

[0086] In an alternative embodiment, the carbon dioxide supply device 240 may include a gas cylinder 241, a connecting pipe 242, and an electromagnetic valve 243. The carbon dioxide supply device 240 may be disposed outside the fresh-keeping container 210, or may be disposed in the fresh-keeping space 213. To improve the utilization rate of the fresh-keeping space 213, it is preferred to dispose the carbon dioxide supply device 240 outside the fresh-keeping container 210.

[0087] Among them, the gas cylinder 241 is filled with carbon dioxide, and the carbon dioxide exists in the gas cylinder 241 in the form of compressed gas or compressed liquid or gas-liquid mixture. The gas cylinder 241 has an air outlet, the fresh-keeping space 213 has an air inlet, both ends of the connecting pipe 242 communicate with the air inlet and the air outlet respectively, and the electromagnetic valve 243 is disposed on the connecting pipe 242 for opening and closing the connecting pipe 242, thereby controllably adjusting the supply and cut-off state of carbon dioxide.

[0088] The fresh-keeping device 20 of the present invention can be used for the fresh-keeping of various food materials, such as poultry eggs, fruits and vegetables, etc. For different types of food materials, the gas content in the fresh-keeping space 213 can be adjusted pertinently by using the gas conditioning module, so as to make the food materials achieve the optimal fresh-keeping effect.

[0089] In an example, the fresh-keeping device 20 is dedicated to the fresh-keeping of poultry eggs, such as chicken eggs, duck eggs, goose eggs, etc. In this case, the carbon dioxide content in the fresh-keeping space 213 can be controlled between 46% and 54%, the oxygen content can be controlled between 7% and 11%, and the nitrogen content can be controlled between 39% and 43% by using the gas conditioning module.

[0090] During the storage of poultry eggs in the fresh-keeping space 213, on the one hand, low-concentration oxygen and high-concentration carbon dioxide can inhibit the respiration of poultry eggs and reduce the decomposition of organic matter in the eggs. On the other hand, high-concentration carbon dioxide can also make the carbon dioxide concentrations inside and outside the eggs tend to be balanced and inhibit the hatching of poultry eggs. In this way, both the fresh-keeping quality of poultry eggs can be improved and the fresh-keeping duration of poultry eggs can be extended.

[0091] In another example, the fresh-keeping device 20 is dedicated to the fresh-keeping of fruits, such as apples, persimmons, tomatoes, etc. In this case, the air-conditioning module can be used to control the oxygen content in the fresh-keeping chamber in stages. For example, first control the oxygen content in the fresh-keeping space 213 at 15% - 21%, and then control the oxygen content in the fresh-keeping space 213 at 3% - 10%.

[0092] During the storage of fruits and vegetables in the fresh-keeping space 213, an oxygen content of 15% - 21% can promote the after-ripening of fruits and vegetables and make the fruits and vegetables reach the best edible state. An oxygen content of 3% - 10% can inhibit the respiration of fruits and vegetables, delay the aging process of fruits and vegetables, and extend the fresh-keeping duration.

[0093] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A freshness preservation device, characterized in that, it includes: a freshness preservation container, within which a freshness preservation space is formed; and a shelf, arranged within the freshness preservation space, which includes a set of storage boards, the set of storage boards includes a plurality of horizontally arranged storage boards, and each of the storage boards has a plurality of food supports for supporting food ingredients; and a plurality of the storage boards are sequentially hinged, and each of the storage boards can be folded around its hinge to another storage board, so that the food supports of the two storage boards are buckled up and down to accommodate the food ingredients.

2. The freshness preservation device according to claim 1, characterized in that, the freshness preservation container is a drawer-type container, which includes a drawer body and a drawer sleeve, the drawer body has a top opening, the drawer sleeve has a side opening, and the drawer body is slidably arranged within the drawer sleeve through the side opening, and jointly defines the freshness preservation space with the drawer sleeve.

3. The freshness preservation device according to claim 2, characterized in that, the shelf is buckled as a drawer cover plate on the top opening of the drawer body, each of the storage boards extends along the front-back direction of the drawer body, and a plurality of the storage boards are sequentially arranged along the left-right direction of the drawer body.

4. The freshness preservation device according to claim 3, characterized in that, the shelf further includes two first limiting plates, arranged on the left and right sides of the set of storage boards, and when the shelf is buckled on the top opening of the drawer body, they respectively extend downward to the outside of the left side wall and the outside of the right side wall of the drawer body to perform left-right limiting on the set of storage boards.

5. The freshness preservation device according to claim 4, characterized in that, the shelf further includes at least two second limiting plates, arranged on the front and back sides of the set of storage boards, and when the shelf is buckled on the top opening of the drawer body, they respectively extend downward to the inside of the front side wall and the inside of the back side wall of the drawer body to perform front-back limiting on the set of storage boards.

6. The freshness preservation device according to claim 5, characterized in that, second limiting plates are formed on both the front and back sides of each of the storage boards, and a limiting slot for accommodating the left side wall or the right side wall of the drawer body is formed between the first limiting plate and the adjacent second limiting plate.

7. The freshness preservation device according to claim 1, characterized in that, a buffer gasket surrounding the food support is arranged on the top of the storage board.

8. The freshness preservation device according to claim 1, characterized in that, the bottom of the food support has air-permeable holes penetrating downward.

9. The freshness preservation device according to claim 8, characterized in that, a water-absorbing gasket surrounding the air-permeable holes is arranged on the bottom of the food support.

10. A refrigerator, characterized in that, it includes the freshness preservation device according to any one of claims 1-9.

Images