Vacuum preservation box and refrigeration equipment

Abstract

The utility model relates to a vacuum preservation box and refrigeration equipment. The vacuum preservation box comprises a box body, a box cover and a box cover, a box cover; the box cover comprises a turnup which is arranged by extending downwards from the peripheral side edge of the box cover; the first fixing ribs are arranged on the inner side of the turned-over edge at intervals; the second fixing ribs are arranged on the inner sides of the first fixing ribs at intervals; a sealing ring; a shrinkage groove is formed in the top face of the box cover in a concave mode, the first fixing rib is located below the groove side wall of the shrinkage groove, and the second fixing rib is located below the groove bottom wall of the shrinkage groove. When the box cover is subjected to injection molding cooling, the groove side walls of the shrinkage grooves are made to move towards the outer side; the depth of the groove bottom wall of the shrinkage groove is deepened, the surface of the shrinkage groove is still flat, namely the groove side wall and the groove bottom wall of the shrinkage groove are still flat, pits are avoided, and the appearance attractiveness of the box cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum equipment, in particular to a vacuum fresh-keeping box and refrigeration equipment. Background Art

[0002] Refrigeration equipment such as refrigerators, freezers, wine cabinets, and beverage cabinets utilize a refrigerant phase change to create a low-temperature environment for storing food and other items. These appliances are essential for home life. As living standards improve, the demand for refrigeration equipment is also increasing.

[0003] Conventional refrigeration equipment generally comprises a box body and a box liner arranged in the box body, wherein a refrigeration chamber is formed in the box liner. A box door is provided on the front side of the box body for opening and closing the refrigeration chamber.

[0004] In related refrigeration equipment, a vacuum container with a door includes a box body, a lid, and a vacuum air valve. The lid is located on the top of the box body and typically has a vacuum port for evacuating the interior of the box body. The vacuum air valve is located at the vacuum port and seals the port. Existing vacuum containers often have retaining ribs around the bottom of the lid to accommodate a sealing strip. During injection molding, the retaining ribs cool rapidly, which can easily cause deformation in the corresponding area of ​​the lid's top surface, affecting the product's appearance. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum fresh-keeping box and a refrigeration device, so as to maintain the aesthetic appearance of the box cover of the vacuum fresh-keeping box.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, the present invention provides a vacuum fresh-keeping box, which includes:

[0008] A box body with an open top and a storage cavity formed therein;

[0009] A box cover is fitted over the top opening of the box body to seal the storage cavity; the box cover comprises:

[0010] A flange, the flange extending downward from the peripheral edge of the box cover, the flange being annular and circumferentially arranged around the peripheral side of the box cover;

[0011] A first fixing rib is provided on the bottom surface of the box cover and extends downward; the first fixing rib is provided at intervals on the inner side of the flange;

[0012] A second fixing rib is provided on the bottom surface of the box cover and extends downward; the second fixing rib is provided at intervals on the inner side of the first fixing rib;

[0013] a sealing ring, provided between the peripheral edge of the box cover and the peripheral side wall of the box body, the sealing ring being used to seal the storage cavity; the sealing ring being clamped between the flange, the first fixing rib, the second fixing rib and the peripheral side wall of the box body;

[0014] A shrinkage groove is recessed on the top surface of the box cover, the first fixing rib is located below the side wall of the shrinkage groove, and the second fixing rib is located below the bottom wall of the shrinkage groove.

[0015] The above technical solution has the following advantages or beneficial effects: during the integral injection molding process of the box cover, when the box cover is cooled during injection molding, the first fixing rib and the second fixing rib cool down faster, so that the area of ​​the side wall of the shrinkage groove corresponding to the first fixing rib shrinks, which only causes the side wall of the shrinkage groove to move outward; at the same time, the area of ​​the bottom wall of the shrinkage groove corresponding to the second fixing rib shrinks, which only causes the depth of the bottom wall of the shrinkage groove to deepen, so that the surface of the shrinkage groove remains flat, that is, the side walls and bottom walls of the shrinkage groove remain flat, avoiding the formation of pits, which is beneficial to improving the appearance of the box cover.

[0016] In some embodiments of the present application, the groove side wall of the shrinkage groove is arranged to extend obliquely upward from the edge of the groove bottom wall of the shrinkage groove toward the edge of the box cover.

[0017] The above technical solution has the following advantages or beneficial effects: through the inclined arrangement structure of the groove side wall of the shrinkage groove, the groove side wall of the shrinkage groove can be more easily displaced outward when the box cover is injection-molded and cooled.

[0018] In some embodiments of the present application, the sealing ring includes: a transverse wall, which is provided at the top of the peripheral side wall of the box body, and the outer end of the transverse wall is clamped between the bottom of the flange and the top of the peripheral side wall of the box body; a longitudinal wall, which is provided inside the box body, and the longitudinal wall is extended downward from the inner end of the transverse wall; a first fixing part, which is protruded from the top surface of the transverse wall; a second fixing part, which is protruded from the top surface of the transverse wall and is arranged at intervals on the inner side of the first fixing part; a first fixing groove is formed between the flange and the first fixing rib, and the first fixing part is clamped and fixed in the first fixing groove; a second fixing groove is formed between the first fixing rib and the second fixing rib, and the second fixing part is clamped between the first fixing rib and the second fixing rib; the bottom end of the second fixing rib extends into the interior of the box body, and the longitudinal wall is clamped between the second fixing rib and the inner wall of the box body.

[0019] The above technical solution has the following advantages or beneficial effects: by clamping and fixing the first fixing part in the first fixing groove, the first fixing part can be clamped and fixed between the flange and the first fixing rib; by clamping and fixing the second fixing part in the second fixing groove, the second fixing part can be clamped and fixed between the first fixing rib and the second fixing rib, thereby fixing the sealing ring at the peripheral edge of the bottom of the box cover, which can improve the stability of the sealing ring fixed to the bottom surface of the box cover.

[0020] In some embodiments of the present application, the longitudinal wall is spaced apart from the inner wall of the box body, and an elastic wall is protruded from the longitudinal wall toward the peripheral side wall of the box body; the elastic wall elastically abuts against the inner wall of the box body so that the longitudinal wall is tightly attached to the second fixing rib.

[0021] The above technical solution has the following advantages or beneficial effects: when the box lid is closed on the top opening of the box body, the elastic wall can elastically offset the inner wall of the box body so that the longitudinal wall is tightly attached to the second fixed rib, thereby sealing the gap between the inner wall of the box body and the first fixed rib, thereby improving the sealing performance of the sealing ring.

[0022] In some embodiments of the present application, a sealing rib is protruding from the bottom surface of the transverse wall, and the sealing rib is clamped between the bottom surface of the transverse wall and the top surface of the peripheral side wall of the box body.

[0023] The above technical solution has the following advantages or beneficial effects: when the box lid is closed on the top opening of the box body, the transverse wall can be clamped between the bottom of the flange and the top surface of the peripheral side wall of the box body, and the sealing rib is clamped and fixed between the bottom surface of the transverse wall and the top surface of the peripheral side wall of the box body. Therefore, the sealing rib can improve the sealing between the transverse wall and the top surface of the peripheral side wall of the box body.

[0024] In some embodiments of the present application, a first connecting rib is provided in the first fixing groove, one side of the first connecting rib is connected to the flange, and the other side of the first connecting rib is connected to the first fixing rib; a second connecting rib is provided in the second fixing groove, one side of the second connecting rib is connected to the first fixing rib, and the other side of the second connecting rib is connected to the second fixing rib.

[0025] The above technical solution has the following advantages or beneficial effects: by connecting the flange and the first fixing rib respectively through the first connecting rib, the structural stability between the flange and the first fixing rib can be improved, thereby facilitating the first fixing portion to be stably clamped and fixed in the first fixing groove. By connecting the first fixing rib and the second fixing rib respectively through the second connecting rib, the structural stability between the first fixing rib and the second fixing rib can be improved, thereby facilitating the second fixing portion to be stably clamped and fixed in the second fixing groove.

[0026] In some embodiments of the present application, the box cover also includes: a vacuum port, which is opened on the top surface of the box cover, and the vacuum port passes through the box cover from top to bottom; a stop rib, which is protruded from the bottom surface of the box cover, and the stop rib is arranged around the bottom of the vacuum port; an annular rib, which is protruded from the bottom surface of the box cover, and the annular rib and the stop rib are arranged at intervals; a first reinforcing rib, which is protruded from the bottom surface of the box cover, and a plurality of the first reinforcing ribs are provided, and a plurality of the first reinforcing ribs are arranged circumferentially around the stop rib; one end of the first reinforcing rib is connected to the stop rib, and the other end is connected to the second fixing rib; a second reinforcing rib, which is protruded from the bottom surface of the box cover, and a plurality of the second reinforcing ribs are provided, and a plurality of the second reinforcing ribs are arranged circumferentially around the annular rib; one end of the first reinforcing rib is connected to the annular rib, and the other end is connected to the second fixing rib.

[0027] The above technical solution has the following advantages or beneficial effects: the structural strength of the box cover can be improved by connecting and cooperating the plurality of first reinforcing ribs with the stop rib, and the structural strength of the box cover can be further improved by connecting and cooperating the plurality of second reinforcing ribs with the annular shape.

[0028] According to another aspect of the present invention, the present invention provides a refrigeration device, which includes:

[0029] A box body, which forms an outer shell of the refrigeration equipment, and a refrigeration compartment is formed in the box body;

[0030] A door is provided on the box body and is used to open and close the refrigeration compartment;

[0031] The vacuum fresh-keeping box is arranged on the box door; the vacuum fresh-keeping box adopts the above-mentioned vacuum fresh-keeping box.

[0032] The above technical solution has the following advantages or beneficial effects: through the shrinkage groove design of the box cover, combined with the design of the first fixing rib and the second fixing rib at the bottom of the box cover, it is beneficial to improve the sealing of the molded box cover, and to maintain the beautiful appearance of the box cover, thereby maintaining the overall beautiful appearance of the vacuum fresh-keeping box, and thus helping to improve the product performance of the refrigeration equipment.

[0033] In some embodiments of the present application, the refrigeration equipment includes: a door shelf, which is provided on the side wall of the door facing the refrigeration compartment; and the vacuum preservation box is detachably provided on the door shelf.

[0034] The above technical solution has the following advantages or beneficial effects: the vacuum preservation box can be detachably arranged on the door shelf, so that the vacuum preservation box can be easily taken out and placed.

[0035] In some embodiments of the present application, the refrigeration equipment includes: a vacuum pump component for vacuuming the vacuum preservation box; the vacuum pump component includes: a vacuum pump connector, which is flippably arranged on the box door and above the vacuum preservation box; a vacuum pump, which is arranged inside the box door; a vacuum pump pipeline, which is arranged inside the box door, one end of the vacuum pump pipeline is connected to the vacuum pump, and the other end is connected to the vacuum pump connector; when the vacuum pump connector is flipped, the vacuum pump connector can be connected to the storage cavity, and the vacuum pump can vacuum the storage cavity through the vacuum pump pipeline and the vacuum pump connector.

[0036] The above technical solution has the following advantages or beneficial effects: by flipping the vacuum pump, vacuuming pipeline, and vacuuming connector, the vacuuming connector can be easily connected to the vacuuming port, allowing the vacuum pump to vacuum the storage cavity of the vacuum storage box. By flipping the vacuuming connector and separating it from the vacuuming port, the vacuum storage box can be taken out and placed without affecting it.

[0037] Details of other embodiments are included in the detailed description and accompanying drawings.

[0038] The effects of the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects not mentioned from the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0040] Figure 2 yes Figure 1 Schematic diagram of the middle box door structure.

[0041] Figure 3 yes Figure 2 The schematic diagram of the structure of the box door in another state is shown.

[0042] Figure 4 yes Figure 3 The structural schematic diagram of the vacuum preservation box shown.

[0043] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0044] Figure 6 yes Figure 4 A schematic diagram of the decomposition structure.

[0045] Figure 7 yes Figure 6 Schematic diagram of the structure of the middle box cover.

[0046] Figure 8 yes Figure 7A schematic diagram of the decomposition structure.

[0047] Figure 9 yes Figure 8 Schematic diagram of the local enlarged structure.

[0048] Figure 10 yes Figure 4 A cross-sectional view of the vacuum container shown in FIG.

[0049] Figure 11 yes Figure 10 Schematic diagram of the local enlarged structure.

[0050] Figure 12 yes Figure 3 A partial cross-sectional view is shown.

[0051] Figure 13 yes Figure 12 Schematic diagram of the local enlarged structure.

[0052] Figure 14 yes Figure 8 Bottom view of the middle box lid.

[0053] Figure 15 yes Figure 14 A cross-sectional view of the box cover is shown.

[0054] Figure 16 yes Figure 15 Schematic diagram of the local enlarged structure.

[0055] Figure 17 yes Figure 15 Schematic diagram of the local enlarged structure.

[0056] Figure 18 yes Figure 10 Schematic diagram of the local enlarged structure.

[0057] The accompanying drawings are as follows: 1. Box body; 2. Box door; 21. Door shell; 22. Door liner; 221. liner rib; 23. Door shelf; 3. Vacuum fresh-keeping box; 301. Positioning rib; 302. Positioning groove; 31. Box body; 310. Storage cavity; 32. Box lid; 320. Shrinkage groove; 3201. Vacuum port; 3202. Sealing surface; 3203. Groove bottom wall; 3204. Groove side wall; 321. Flanged edge; 3211. First fixing groove; 3212. First connecting rib; 322. First fixing rib; 3221. Second fixing groove; 3222. Second connecting rib Connecting rib; 323, second fixing rib; 324, stop rib; 3241, stop part; 3242, ventilation groove; 3251, first reinforcing rib; 3252, second reinforcing rib; 3253, annular rib; 326, positioning ring; 327, sealing groove; 33, sealing ring; 331, transverse wall; 332, longitudinal wall; 333, first fixing part; 334, second fixing part; 335, elastic wall; 336, sealing rib; 34, vacuum air valve; 341, column part; 342, sealing part; 343, abutting part; 4, vacuum joint; 41, sealing ring. DETAILED DESCRIPTION

[0058] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0062] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0063] like Figure 1 As shown, the refrigeration device provided in the embodiment of the present invention may include a housing 1. The housing 1 may adopt a hollow structure of a rectangular parallelepiped. It is understood that in other embodiments, the housing 1 may also adopt a hollow shell structure of other shapes.

[0064] In some embodiments, a refrigeration compartment (not shown) may be formed in the box body 1. The refrigeration compartment can be used as an independent storage space, and can be used as a refrigerator, a temperature-changing room, a freezer, etc., to meet different storage needs such as refrigeration and freezing according to the types of stored items.

[0065] In some embodiments, a plurality of refrigeration compartments may be provided in the cabinet 1. The plurality of refrigeration compartments may be arranged in the cabinet 1 in a manner of being divided vertically or horizontally.

[0066] like Figure 1 As shown, in some embodiments, a liner (not shown) may be provided within the housing 1. A refrigeration compartment may be formed within the liner. Multiple liner structures may be provided within the housing 1. The multiple liner structures may be arranged within the housing 1 in a vertically or horizontally partitioned manner. Each liner structure may form one or more refrigeration compartments.

[0067] In some embodiments, a foam layer (not shown) may be provided within the cabinet 1. The foam layer may be formed in the space between the outer wall of the cabinet and the inner wall of the cabinet 1. This foam layer can be used to insulate the cabinet and the interior of the refrigeration compartment, thereby improving the thermal insulation performance of the refrigeration equipment.

[0068] like Figure 1 As shown, in some embodiments, a refrigeration system (not shown) may be provided in the housing 1. The refrigeration system may be provided inside the housing 1. The refrigeration system may be used to provide cold air inside the refrigeration device to maintain a low temperature environment in each refrigeration compartment.

[0069] In some embodiments, the refrigeration system may include a compressor (not shown). The compressor can serve as the power source of the refrigeration cycle, sucking in low-temperature, low-pressure refrigerant gas and compressing it into high-temperature, high-pressure gas. The compressor can deliver the high-temperature, high-pressure refrigerant to the condenser.

[0070] In some embodiments, the refrigeration system may include a condenser (not shown). The condenser may receive refrigerant flowing out of the compressor and cool the high-temperature, high-pressure refrigerant gas from the compressor into a liquid state. The condenser may transfer heat from the refrigerant to the surrounding air, thereby lowering the refrigerant temperature.

[0071] In some embodiments, the refrigeration system may include a throttling device (not shown). The condenser may deliver the condensed refrigerant to the throttling device. The throttling device may be a capillary tube. The throttling device may be used to throttle and reduce the pressure of the refrigerant.

[0072] In some embodiments, the refrigeration system may include a compressor, a condenser, a throttling device, and an evaporator. The compressor, condenser, throttling device, and evaporator may be sequentially connected to form a refrigeration circuit. Refrigerant may circulate within the refrigeration circuit to cool the interior of the cabinet 1.

[0073] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle box door 2.

[0074] like Figure 1 and Figure 2 As shown, in some embodiments, a door 2 may be provided on the front side of the housing 1. The door 2 can be used to open and close the refrigeration compartment. The door 2 may be connected to the housing 1 via a hinge, allowing the door 2 of the refrigeration device to rotate about the hinge axis, thereby opening and closing the door 2 of the refrigeration device and, in turn, opening or closing the corresponding refrigeration compartment.

[0075] In some embodiments, multiple doors 2 can be provided. Multiple doors 2 can be provided in a one-to-one correspondence with multiple refrigeration compartments. It should be noted that, in other embodiments, multiple doors 2 can also open and close a refrigeration compartment at the same time.

[0076] like Figure 2 As shown, in some embodiments, the door 2 may include a door shell 21. The front side wall of the door shell 21 may form a door panel. The door panel may serve as the front appearance of the door 2.

[0077] In some embodiments, the door 2 may include a door liner 22. The door liner 22 may be disposed on the back side of the door shell 21. A foam layer may be formed between the door liner 22 and the door shell 21. The foam layer may be filled with a foam material to achieve heat preservation and thermal insulation properties of the door 2.

[0078] like Figure 2 As shown, in some embodiments, the refrigeration unit may include a door shelf 23. The door shelf 23 may be disposed on the side wall of the door 2 facing the refrigeration compartment. Thus, items can be placed on the door 2 via the door shelf 23, thereby fully utilizing the space in the refrigeration compartment and on the door 2.

[0079] In some embodiments, there may be multiple door shelves 23, and the multiple door shelves 23 may be arranged in an upper and lower order. It should be noted that the number of door shelves 23 and the spacing between adjacent door shelves 23 can be adjusted as needed and are not limited here.

[0080] In some embodiments, the door liner 22 may be provided with protruding ribs 221. The ribs 221 may be arranged vertically. Two ribs 221 may be provided, spaced apart from each other. The door shelf 23 may be positioned between the two vertically arranged ribs 221. In this manner, the ribs 221 secure the door shelf 23 to the door liner 22, thereby stably securing the door shelf 23 to the side wall of the door 2.

[0081] In some embodiments, the door shelf 23 can be detachably mounted on the cabinet door 2. The door shelf 23 can be detachably mounted on the ribs 221 of the door liner 22.

[0082] It should be noted that, in some other embodiments, the door shelf 23 may also be integrally formed in the door liner 22 , so that the door shelf 23 may be integrally formed on the side wall of the box door 2 .

[0083] like Figure 2 As shown, in some embodiments, the refrigeration device may include a vacuum fresh-keeping container 3. The vacuum fresh-keeping container 3 may be mounted on the refrigerator door 2. The vacuum fresh-keeping container 3 may be supported on the door shelf 23. A storage cavity 310 may be formed within the vacuum fresh-keeping container 3. The interior of the vacuum fresh-keeping container 3 may be evacuated to create a vacuum storage environment within the storage cavity 310. In this manner, the vacuum fresh-keeping container 3 may be used to store food in a vacuum-preserved manner at low temperatures.

[0084] Figure 3 yes Figure 2 The structure diagram of the door 2 shown is in another state.

[0085] like Figure 2 and Figure 3 As shown, in some embodiments, the refrigeration device may include a vacuuming component. The vacuuming component can be used to vacuum the vacuum preservation box 3, thereby forming a vacuum storage environment inside the vacuum preservation box 3.

[0086] In some embodiments, the vacuuming assembly may include a vacuum pump (not shown). The vacuum pump may be located inside the door 2. The vacuum pump may be connected to the storage cavity 310 within the vacuum preservation box 3. Thus, the vacuum pump may be used to evacuate the storage cavity 310 within the vacuum preservation box 3, thereby creating a vacuum storage environment within the storage cavity 310 within the vacuum preservation box 3.

[0087] In some embodiments, the vacuum assembly may include a vacuum connector 4. The vacuum pump's exhaust port may be connected to the vacuum connector 4. The vacuum connector 4 may be configured to connect to the storage cavity 310 within the vacuum preservation container 3. The vacuum pump may then evacuate the storage cavity 310 within the vacuum preservation container 3 via the vacuum connector 4, thereby creating a vacuum storage environment within the storage cavity 310 within the vacuum preservation container 3.

[0088] In some embodiments, the vacuum assembly may include a vacuum line (not shown). The vacuum line may be disposed between the vacuum pump and the vacuum connector 4. One end of the vacuum line may be connected to the vacuum pump. The other end of the vacuum line may be connected to the vacuum connector 4. Thus, the vacuum pump's exhaust end may be connected to the vacuum connector 4 via the vacuum line, allowing the vacuum pump to evacuate the interior of the vacuum storage box 3 via the vacuum line and the vacuum connector 4.

[0089] like Figure 2 and Figure 3 As shown, in some embodiments, the vacuum joint 4 is flippably provided on the door 2. When the vacuum joint 4 is flipped, the vacuum joint 4 can be connected to or separated from the inside of the vacuum fresh-keeping box 3 on the door 2. When the vacuum joint 4 is flipped and separated from the vacuum fresh-keeping box 3, the vacuum fresh-keeping box 3 can be taken out from the door 2. When the vacuum joint 4 is flipped and connected to the inside of the vacuum fresh-keeping box 3, the vacuum joint 4 can vacuum the storage cavity 310 inside the vacuum fresh-keeping box 3 to form a vacuum preservation environment in the storage cavity 310 inside the vacuum fresh-keeping box 3. In this way, the flip design of the vacuum joint 4 can facilitate the user to vacuum the vacuum fresh-keeping box 3 on the door 2 without affecting the taking and placing of the vacuum fresh-keeping box 3.

[0090] In some embodiments, the vacuum connector 4 is reversibly disposed above the door shelf 23. When the vacuum container 3 is placed on the door shelf 23, the vacuum connector 4 can be flipped downward and aligned with the top surface of the vacuum container 3, allowing the vacuum pump to vacuum the interior of the vacuum container 3 via the vacuum pipeline and the vacuum connector 4. When the vacuum connector 4 is flipped upward, it can be separated from the top surface of the vacuum container 3, allowing the vacuum container 3 to be removed from the door shelf 23.

[0091] It should be noted that, in some other embodiments, the vacuum joint 4 can also be movably provided on the door 2. When the vacuum joint 4 can also be moved to the vacuum fresh-keeping box 3 and docked with the interior of the vacuum fresh-keeping box 3, the vacuum pump can sequentially vacuum the interior of the vacuum fresh-keeping box 3 through the vacuum pipe and the vacuum joint 4.

[0092] In addition, in some other embodiments, the vacuum assembly may not include the vacuum connector 4. The vacuum pump may also be directly connected to the interior of the vacuum preservation box 3 through a vacuum pipeline.

[0093] Figure 4 yes Figure 3 The structural diagram of the vacuum preservation box 3 is shown.

[0094] like Figure 3 and Figure 4 As shown, in some embodiments, the vacuum storage box 3 can be detachably supported on the door shelf 23. When the vacuum joint 4 is flipped, the vacuum joint 4 can be aligned with or separated from the top surface of the vacuum storage box 3. Thus, when the vacuum storage box 3 needs to be vacuumed, the vacuum joint 4 can be flipped downward so that the vacuum joint 4 can be aligned with the top surface of the vacuum storage box 3, thereby vacuuming the interior of the vacuum storage box 3. When the vacuum storage box 3 needs to be removed or placed, the vacuum joint 4 can be flipped upward so that the vacuum joint 4 can be separated from the top surface of the vacuum storage box 3, thereby allowing the vacuum storage box 3 to be smoothly removed and placed on the door shelf 23.

[0095] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0096] like Figure 4 and Figure 5 As shown, in some embodiments, the refrigeration unit may include multiple vacuum containers 3. These containers 3 may be stacked one above the other above the door shelf 23. These containers 3 can be used to store food ingredients in a categorized manner. Stacking these containers above the door shelf 23 fully utilizes the space above the refrigerator door 2 and the door shelf 23.

[0097] When the vacuum joint 4 is flipped downward, it can contact the top surface of the topmost vacuum fresh-keeping box 3 among the multiple vacuum fresh-keeping boxes 3 on the door shelf 23, thereby allowing vacuum to be drawn inside the topmost vacuum fresh-keeping box 3. When the vacuum joint 4 is flipped upward, it can be separated from the top surface of the topmost vacuum fresh-keeping box 3, thereby allowing the multiple vacuum fresh-keeping boxes 3 stacked on the door shelf 23 to be taken in and out one by one.

[0098] It should be noted that the number of vacuum preservation boxes 3 can be adjusted as needed and is not limited here.

[0099] like Figure 4 and Figure 5 As shown, in some embodiments, the bottom of the vacuum fresh-keeping box 3 may be provided with a protruding positioning rib 301. A recessed positioning groove 302 may be provided on the top surface of the vacuum fresh-keeping box 3. The positioning rib 301 may mate with the positioning groove 302. When multiple vacuum fresh-keeping boxes 3 are stacked one above the other, the positioning rib 301 of the upper vacuum fresh-keeping box 3 can be supported by the positioning groove 302 of the lower vacuum fresh-keeping box 3. In this way, the positioning rib 301 and the positioning groove 302 can be used to stably stack one vacuum fresh-keeping box 3 on top of another, thereby improving the stacking stability of the multiple vacuum fresh-keeping boxes 3.

[0100] In some embodiments, the positioning groove 302 can be annular. The positioning groove 302 can be circumferentially arranged near the edge of the top surface of the vacuum preservation box 3. The positioning rib 301 can be annular. The positioning rib 301 can be circumferentially arranged at the lateral edge of the bottom of the vacuum preservation box 3.

[0101] When one vacuum fresh-keeping box 3 is stacked on another vacuum fresh-keeping box 3, the annular positioning rib 301 can cooperate with the annular positioning groove 302 to position and support the upper vacuum fresh-keeping box 3 on the peripheral area of ​​the top of the lower vacuum fresh-keeping box 3, thereby making the force of the upper vacuum fresh-keeping box 3 evenly distributed on the top surface of the lower vacuum fresh-keeping box 3 and transferring the force to the peripheral side wall of the lower vacuum fresh-keeping box 3, thereby reducing the deformation of the top surface of the lower vacuum fresh-keeping box 3 and improving the supporting strength of the top surface of the lower vacuum fresh-keeping box 3.

[0102] Figure 6 yes Figure 4 A schematic diagram of the decomposition structure.

[0103] like Figure 6 As shown, in some embodiments, the vacuum preservation box 3 may include a box body 31 and a box lid 32. The box body 31 has an opening at the top. A storage cavity 310 may be formed inside the box body 31. The box lid 32 may be detachably mounted on the top opening of the box body 31, and the storage cavity 310 may be opened or closed by the box lid 32.

[0104] In some embodiments, a vacuum port 3201 may be provided on the top surface of the lid 32. When the vacuum connector 4 is flipped over, it can connect or disconnect with the vacuum port 3201 on the top surface of the vacuum preservation box 3. Thus, when the vacuum preservation box 3 needs to be vacuumed, the vacuum connector 4 can be flipped downward so that it can connect with the vacuum port 3201 on the top surface of the vacuum preservation box 3. This allows a vacuum pump to vacuum the interior of the vacuum preservation box 3 through the vacuum connector 4 and the vacuum port 3201.

[0105] It should be noted that, in some other embodiments, the vacuum port 3201 may not be located on the top surface of the vacuum fresh-keeping box 3. The vacuum port 3201 may also be located on other side walls of the vacuum fresh-keeping box 3. In this case, the vacuum connector 4 may be reversibly disposed on one side of the vacuum fresh-keeping box 3, or movably disposed on one side of the vacuum fresh-keeping box 3, to facilitate connection and separation of the vacuum connector 4 from the vacuum port 3201.

[0106] In some embodiments, the positioning groove 302 can be recessed in the top surface of the box lid 32. The positioning groove 302 can be annular and circumferentially arranged near the edge of the top surface of the box lid 32. The positioning rib 301 can be convexly arranged at the bottom of the box body 31. The positioning rib 301 can be annular and circumferentially arranged at the peripheral edge of the bottom of the box body 31. In this way, when a vacuum fresh-keeping box 3 is stacked on another vacuum fresh-keeping box 3, the gravity of the upper vacuum fresh-keeping box 3 can be transferred to the peripheral edge of the box lid 32 of the lower vacuum fresh-keeping box 3 through the annular positioning groove 302, and then transferred to the peripheral side wall of the box body 31 of the lower vacuum fresh-keeping box 3, which can reduce the deformation of the box lid 32 of the lower vacuum fresh-keeping box 3 and improve the supporting strength of the box lid 32 of the lower vacuum fresh-keeping box 3.

[0107] Figure 7 yes Figure 6 Schematic diagram of the structure of the middle box cover 32. Figure 8 yes Figure 7 A schematic diagram of the decomposition structure.

[0108] like Figure 6 、 Figure 7 and Figure 8 As shown, in some embodiments, the vacuum preservation box 3 may include a sealing ring 33. The sealing ring 33 may be provided between the box cover 32 and the box body 31 to seal the gap between the box cover 32 and the box body 31, thereby achieving sealing of the vacuum preservation box 3.

[0109] In some embodiments, the sealing ring 33 can be annular. The sealing ring 33 can be disposed at the peripheral edge of the bottom surface of the box cover 32. When the box cover 32 is closed on the top opening of the box body 31, the sealing ring 33 can be supported on the top area of ​​the peripheral side wall of the box body 31, so that the sealing ring 33 can be clamped between the peripheral edge of the bottom surface of the box cover 32 and the top of the peripheral side wall of the box body 31, thereby sealing the gap between the box cover 32 and the box body 31, thereby achieving a sealed vacuum fresh-keeping box 3.

[0110] Figure 9 yes Figure 8 Schematic diagram of the local enlarged structure. Figure 10 yes Figure 4 sectional view of the vacuum preservation box 3 shown in FIG. Figure 11 yes Figure 10 Schematic diagram of the local enlarged structure.

[0111] like Figure 9 、 Figure 10 and Figure 11 As shown, in some embodiments, the vacuum preservation box 3 may include a vacuum air valve 34. The vacuum air valve 34 may be provided at the vacuum port 3201. The vacuum air valve 34 may be used to seal the vacuum port 3201, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0112] In some embodiments, the vacuum air valve 34 may include a column portion 341. The column portion 341 may be provided at the vacuum port 3201. The outer diameter of the column portion 341 may be smaller than the inner diameter of the vacuum port 3201, so that a first ventilation gap (not shown) is formed between the outer wall of the column portion 341 and the inner wall of the vacuum port 3201. When the vacuum joint 4 vacuums the vacuum port 3201, the column portion 341 may be forced to move upward, and the air inside the vacuum preservation box 3 may be extracted through the first ventilation gap, thereby forming a vacuum environment inside the vacuum preservation box 3.

[0113] like Figure 11 As shown, in some embodiments, the vacuum air valve 34 may include a sealing portion 342. The sealing portion 342 may be provided at the top of the vacuum air valve 34. The sealing portion 342 may be provided on the circumferential side of the top of the column portion 341. The column portion 341 is annular and is circumferentially arranged around the circumferential side of the top of the column portion 341. A sealing surface 3202 may be formed on the top surface of the box cover 32. The sealing surface 3202 may be arranged around the circumferential side of the top opening of the vacuum port 3201. The sealing portion 342 may protrude from the top of the vacuum port 3201. The sealing portion 342 may be provided above the sealing surface 3202. The sealing portion 342 may be used to abut against the sealing surface 3202 to achieve sealing of the vacuum port 3201, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0114] Figure 12 yes Figure 3 A partial cross-sectional view is shown. Figure 13 yes Figure 12 Schematic diagram of the local enlarged structure.

[0115] like Figure 13As shown, in some embodiments, when the vacuum joint 4 is vacuuming the vacuum port 3201, the sealing portion 342 can be forced to move upward, forming a second ventilation gap (not shown) between the bottom surface of the sealing portion 342 and the sealing surface 3202. The second ventilation gap is connected to the first ventilation gap, thereby allowing the storage cavity 310 inside the vacuum storage box 3 to communicate with the vacuum joint 4 through the first ventilation gap and the second ventilation gap. At this time, the vacuum pump can extract air from the vacuum storage box 3 through the vacuum joint 4, thereby vacuuming the interior of the vacuum storage box 3.

[0116] When the vacuum preservation box 3 is evacuated, negative pressure may be formed inside the vacuum preservation box 3. The sealing portion 342 may be tightly attached to the sealing surface 3202 under the action of the internal and external pressure difference, thereby sealing the vacuum extraction port 3201 and further sealing the storage cavity 310 inside the vacuum preservation box 3.

[0117] It should be noted that, in some embodiments, when the vacuum preservation box 3 needs to be opened, the sealing portion 342 can be moved upward by external force, so that a second ventilation gap can be formed between the bottom surface of the sealing portion 342 and the sealing surface 3202. The air outside the vacuum preservation box 3 can flow into the storage cavity 310 inside the vacuum preservation box 3 through the second ventilation gap and the first ventilation gap, thereby achieving pressure relief of the vacuum preservation box 3 and allowing the box cover 32 to be easily opened.

[0118] like Figure 11 and Figure 13 As shown, in some embodiments, the vacuum air valve 34 may include an abutment portion 343. The abutment portion 343 is provided on the peripheral side of the bottom of the column portion 341. The abutment portion 343 is used to abut against the bottom opening of the vacuum port 3201. When the vacuum port 3201 is evacuated or depressurized, the vacuum air valve 34 can be forced to move upward, causing the abutment portion 343 to abut against the peripheral sidewall of the bottom opening of the vacuum port 3201, thereby preventing the vacuum air valve 34 from falling out of the vacuum port 3201.

[0119] In some embodiments, when the vacuum port 3201 is vacuumed, the sealing portion 342 can be forced to move upward, and the abutting portion 343 abuts against the bottom opening of the vacuum port 3201. At this time, the distance between the sealing portion 342 and the abutting portion 343 is greater than the height of the vacuum port 3201, so a second ventilation gap can be formed between the bottom surface of the sealing portion 342 and the sealing surface 3202, so that the second ventilation gap is connected to the first ventilation gap.

[0120] In some embodiments, the abutting portion 343 may be annular and circumferentially arranged on the outer peripheral wall of the bottom of the column portion 341 .

[0121] like Figure 9 and Figure 11 As shown, in some embodiments, a stop rib 324 may be protruded from the bottom of the box cover 32. The stop rib 324 is arranged around the circumference of the bottom opening of the vacuum port 3201. The stop rib 324 can serve as the circumferential side wall of the bottom opening of the vacuum port 3201. In this way, when the vacuum port 3201 is evacuated or depressurized, the sealing portion 342 can be forced to move upward, and the abutting portion 343 can abut against the stop rib 324 around the bottom opening of the vacuum port 3201, preventing the vacuum air valve 34 from escaping from the vacuum port 3201.

[0122] In some embodiments, the bottom of the stop rib 324 may be provided with a plurality of stop portions 3241. The plurality of stop portions 3241 may be arranged circumferentially spaced apart on the stop rib 324. The plurality of stop portions 3241 may be arranged circumferentially spaced apart around the bottom of the vacuum port 3201. Ventilation grooves 3242 may be formed between adjacent stop portions 3241. The venting grooves 3242 may connect the first ventilation gap and the storage chamber 310. Thus, when the vacuum port 3201 is evacuated or depressurized, the abutting portion 343 may abut against the stop portion 3241 at the bottom of the stop rib 324, maintaining the first ventilation gap in communication with the storage chamber 310 through the venting grooves 3242. This allows gas within the storage chamber 310 to be drawn out of the vacuum joint 4 sequentially through the venting grooves 3242, the first ventilation gap, and the second ventilation gap, thereby achieving vacuuming of the interior of the vacuum storage box 3.

[0123] In addition, when the vacuum port 3201 is depressurized, the abutment portion 343 can also abut against the stop portion 3241 at the bottom of the stop rib 324, so that the first ventilation gap remains connected to the storage cavity 310 through the ventilation groove 3242, and the air outside the vacuum preservation box 3 can flow into the storage cavity 310 through the second ventilation gap, the first ventilation gap, and the ventilation groove 3242 in sequence, thereby achieving air pressure balance inside and outside the vacuum preservation box 3, and allowing the box cover 32 to be easily opened.

[0124] It should be noted that in some other embodiments, the bottom of the stop rib 324 may not be provided with the stop portion 3241 and the vent groove 3242, and a vent hole connecting the first vent gap and the storage cavity 310 may be provided on the abutment portion 343. When the storage cavity 310 abuts against each other, the vent hole can be used to maintain the first vent gap and the storage cavity 310 in communication.

[0125] Figure 14 yes Figure 8 Bottom view of the middle box cover 32.

[0126] like Figure 8 and Figure 14 As shown, in some embodiments, a reinforcing rib may be provided on the bottom surface of the box cover 32. There may be multiple reinforcing ribs. Multiple reinforcing ribs can increase the structural strength of the box cover 32.

[0127] In some embodiments, the plurality of reinforcing ribs may include a plurality of first reinforcing ribs 3251. The plurality of first reinforcing ribs 3251 are arranged around the periphery of the stop rib 324. One end of the first reinforcing rib 3251 may be connected to the stop rib 324. The other end of the first reinforcing rib 3251 may be connected to the periphery edge of the bottom surface of the box cover 32. In this way, by connecting and cooperating with the plurality of first reinforcing ribs 3251 and the stop rib 324, the structural strength of the box cover 32 can be further improved. In addition, the plurality of first reinforcing ribs 3251 are arranged around the periphery of the stop rib 324, which can facilitate cleaning of the bottom surface of the box cover 32.

[0128] In some embodiments, an annular rib 3253 may be provided on the bottom surface of the box cover 32. The annular rib 3253 may be an annular structure. The annular rib 3253 may be spaced apart from the stop rib 324. The plurality of reinforcing ribs may include a plurality of second reinforcing ribs 3252. The plurality of second reinforcing ribs 3252 are arranged around the circumference of the annular rib 3253. One end of the second reinforcing rib 3252 may be connected to the annular rib 3253. The other end of the second reinforcing rib 3252 may be connected to the circumferential edge of the bottom surface of the box cover 32. In this way, by coupling the plurality of second reinforcing ribs 3252 with the annular rib 3253, the structural strength of the box cover 32 may be further improved.

[0129] In some embodiments, multiple annular ribs 3253 may be provided. The multiple annular ribs 3253 may be spaced apart from one another. The multiple annular ribs 3253 may be sequentially spaced apart on one side of the stop rib 324. The multiple second reinforcing ribs 3252 may be divided into multiple groups, each of which is arranged around the circumference of the multiple annular ribs 3253. Thus, the structural strength of the lid 32 can be further enhanced by coupling the multiple annular ribs 3253 with the multiple second reinforcing ribs 3252.

[0130] Figure 15 yes Figure 14 A cross-sectional view of the cover 32 is shown. Figure 16 yes Figure 15 Schematic diagram of the local enlarged structure.

[0131] like Figure 13 and Figure 16 As shown, in some embodiments, a positioning ring 326 may be protruded from the top surface of the box cover 32. The positioning ring 326 may be arranged around the circumference of the vacuum port 3201.

[0132] When the vacuum joint 4 is flipped over and docked with the top of the vacuum fresh-keeping box 3, the vacuum joint 4 can be sealed against the positioning ring 326, isolating the interior of the positioning ring 326 from the exterior, and then the vacuum joint 4 can dock with the vacuum port 3201 inside the positioning ring 326. In this way, when the vacuum pump is operating, the air inside the vacuum fresh-keeping box 3 can smoothly flow into the vacuum joint 4 through the vacuum port 3201 and be pumped out by the vacuum pump, thus achieving vacuumization of the interior of the vacuum fresh-keeping box 3.

[0133] like Figure 12 and Figure 13 As shown, in some embodiments, the vacuum joint 4 may be provided with a sealing ring 41. The sealing ring 41 may be made of a flexible material and may be annular. When the vacuum joint 4 is connected to the top of the vacuum preservation container 3, the sealing ring 41 can seal against the positioning ring 326, thereby ensuring a tight seal between the vacuum joint 4 and the vacuum port 3201, allowing the air inside the vacuum preservation container 3 to be smoothly extracted.

[0134] like Figure 13 and Figure 16 As shown, in some embodiments, a sealing groove 327 may be recessed on the top surface of the box cover 32, and the sealing groove 327 may be arranged around the circumference of the top opening of the vacuum port 3201. The sealing surface 3202 may be formed on the bottom surface of the sealing groove 327. The sealing portion 342 may be arranged within the contour of the sealing groove 327. The positioning ring 326 may be arranged around the circumference of the sealing groove 327. In this way, by arranging the sealing portion 342 within the sealing groove 327, the height of the vacuum air valve 34 can be reduced, so that the vacuum air valve 34 does not protrude from the top surface of the positioning ring 326, thereby helping to reduce the height requirement of the positioning ring 326.

[0135] Figure 17 yes Figure 15 FIG. 3 is a schematic diagram of a partial enlarged structure of the box cover 32 shown. Figure 18 yes Figure 10 Schematic diagram of the local enlarged structure.

[0136] like Figure 17 and Figure 18 As shown, in some embodiments, the box cover 32 may include a flange 321. The flange 321 may extend downward from the peripheral edge of the box cover 32. The flange 321 may be annular and circumferentially arranged around the peripheral side of the box cover 32. The flange 321 may be arranged vertically opposite the peripheral side wall of the box body 31. The sealing ring 33 may be clamped and fixed between the bottom of the flange 321 and the top of the peripheral side wall of the box body 31, thereby sealing the gap between the box cover 32 and the box body 31.

[0137] In some embodiments, the box cover 32 may include a first fixing rib 322. The first fixing rib 322 may be located on the bottom surface of the box cover 32 and extend downward. The first fixing rib 322 may be annular, and the first fixing rib 322 may be arranged in an area near the peripheral edge of the box cover 32. The first fixing rib 322 may be located at intervals on the inner side of the flange 321. The first fixing rib 322 may be located at intervals on a side of the flange 321 near the center of the box cover 32. In this way, by cooperating with the flange 321 and the first fixing rib 322, at least a portion of the sealing ring 33 can be clamped and fixed between the flange 321 and the first fixing rib 322, thereby fixing the sealing ring 33 to the peripheral edge of the bottom of the box cover 32.

[0138] In some embodiments, the lid 32 may include a second fixing rib 323. The second fixing rib 323 may be located on the bottom surface of the lid 32 and extend downward. The second fixing rib 323 may be annular and may be located in an area near the peripheral edge of the lid 32. The second fixing rib 323 may be located at intervals on the inner side of the first fixing rib 322. The second fixing rib 323 may be located at intervals on a side of the first fixing rib 322 near the center of the lid 32. In this way, by cooperating with the first fixing rib 322 and the second fixing rib 323, at least a portion of the sealing ring 33 can be clamped and fixed between the flange 321 and the first fixing rib 322, thereby fixing the sealing ring 33 to the peripheral edge of the top of the lid 32. In addition, the sealing ring 33 can be clamped between the flange 321, the first fixing rib 322, the second fixing rib 323, and the peripheral sidewall of the box body 31, thereby improving the sealing between the lid 32 and the box body 31.

[0139] like Figure 18 As shown, in some embodiments, the sealing ring 33 may include a transverse wall 331. The transverse wall 331 may be disposed above the top of the peripheral side wall of the box body 31. The transverse wall 331 may extend horizontally. The transverse wall 331 may be clamped between the bottom of the flange 321 and the top of the peripheral side wall of the box body 31. In this way, the sealing rib 336 may seal the gap between the bottom of the flange 321 and the top of the peripheral side wall of the box body 31 through the transverse wall 331, thereby ensuring the seal between the box body 31 and the box cover 32.

[0140] In some embodiments, the transverse wall 331 may be an annular structure, and the extending direction of the transverse wall 331 is consistent with the annular extending direction of the sealing ring 33 .

[0141] In some embodiments, the outer end of the transverse wall 331 can be clamped between the bottom of the flange 321 and the top of the peripheral sidewall of the box body 31. The inner end of the transverse wall 331 can be clamped between the bottom of the first fixing rib 322 and the top of the peripheral sidewall of the box body 31. The bottom of the flange 321 and the bottom of the first fixing rib 322 can be arranged flush.

[0142] like Figure 18 As shown, in some embodiments, the sealing ring 33 may include a longitudinal wall 332. The bottom end of the longitudinal wall 332 may extend into the interior of the box body 31. The longitudinal wall 332 may extend downward from the inner end of the transverse wall 331. The bottom of the second fixing rib 323 may extend into the interior of the box body 31. The longitudinal wall 332 may be clamped between the second fixing rib 323 and the inner wall of the peripheral side wall of the box body 31.

[0143] In some embodiments, the bottom of the longitudinal wall 332 and the bottom of the second fixing rib 323 may be flush with each other.

[0144] In some embodiments, the longitudinal wall 332 may be an annular structure, and the extending direction of the longitudinal wall 332 is consistent with the annular extending direction of the sealing ring 33 .

[0145] like Figure 18 As shown, in some embodiments, the sealing ring 33 may include a first fixing portion 333. The first fixing portion 333 may be protruding from the top surface of the transverse wall 331. A first fixing groove 3211 may be formed between the flange 321 and the first fixing rib 322. The first fixing portion 333 may be clamped and fixed in the first fixing groove 3211. The first fixing portion 333 is clamped and fixed between the flange 321 and the first fixing rib 322, thereby fixing the sealing ring 33 to the peripheral edge of the bottom of the box cover 32.

[0146] In some embodiments, the first fixing portion 333 may be an annular structure, and the extending direction of the first fixing portion 333 is consistent with the annular extending direction of the sealing ring 33 .

[0147] like Figure 18 As shown, in some embodiments, the sealing ring 33 may include a second fixing portion 334. The second fixing portion 334 may be protruding from the top surface of the transverse wall 331. The second fixing portion 334 may be spaced apart and disposed inside the first fixing portion 333. A second fixing groove 3221 may be formed between the first fixing rib 322 and the second fixing rib 323. The second fixing portion 334 may be clamped and fixed in the second fixing groove 3221. The second fixing portion 334 may be clamped and fixed between the first fixing rib 322 and the second fixing rib 323, thereby fixing the sealing ring 33 to the peripheral edge of the bottom of the box cover 32, thereby improving the stability of the sealing ring 33 fixed to the bottom surface of the box cover 32.

[0148] In some embodiments, the second fixing portion 334 may be an annular structure, and the extending direction of the second fixing portion 334 is consistent with the annular extending direction of the sealing ring 33 .

[0149] like Figure 18As shown, in some embodiments, the sealing ring 33 may include an elastic wall 335. The longitudinal wall 332 is spaced apart from the inner wall of the box body 31. The elastic wall 335 may be protruded on the side wall of the longitudinal wall 332 facing the peripheral side wall of the box body 31. One end of the elastic wall 335 may be connected to the longitudinal wall 332. The other end of the elastic wall 335 may elastically abut against the inner wall of the box body 31. When the box cover 32 is closed on the top opening of the box body 31, the elastic wall 335 may elastically abut against the inner wall of the box body 31, so that the longitudinal wall 332 is tightly attached to the second fixing rib 323, thereby sealing the gap between the inner wall of the box body 31 and the first fixing rib 322, thereby improving the sealing performance of the sealing ring 33.

[0150] In some embodiments, the elastic wall 335 can be arranged to extend obliquely upward from the bottom end of the longitudinal wall 332 toward the peripheral sidewall of the box body 31. In this way, when the box cover 32 is closed on the top opening of the box body 31, the bottom end of the elastic wall 335 can abut against the longitudinal wall 332, and the top end of the elastic wall 335 can elastically abut against the inner wall of the box body 31, so that the top end of the elastic wall 335 is bent and deformed toward the longitudinal wall 332. The elastic wall 335 can seal the gap between the longitudinal wall 332 and the inner wall of the peripheral sidewall of the box body 31, thereby improving the sealing performance of the sealing ring 33.

[0151] In some embodiments, the elastic wall 335 may be an annular structure, and the extending direction of the elastic wall 335 is consistent with the annular extending direction of the sealing ring 33 .

[0152] like Figure 18 As shown, in some embodiments, a sealing rib 336 may be protruding from the bottom surface of the transverse wall 331. The sealing rib 336 may be clamped between the bottom surface of the transverse wall 331 and the top surface of the peripheral side wall of the box body 31. In this way, when the box lid 32 is closed on the top opening of the box body 31, the transverse wall 331 may be clamped between the bottom of the flange 321 and the top surface of the peripheral side wall of the box body 31, and the sealing rib 336 is clamped and fixed between the bottom surface of the transverse wall 331 and the top surface of the peripheral side wall of the box body 31. Therefore, the sealing rib 336 can improve the sealing between the transverse wall 331 and the top surface of the peripheral side wall of the box body 31.

[0153] In some embodiments, the sealing rib 336 may be an annular structure, and the extending direction of the sealing rib 336 is consistent with the annular extending direction of the sealing ring 33 .

[0154] like Figure 18As shown, in some embodiments, a first connecting rib 3212 may be provided within the first fixing groove 3211. The first connecting rib 3212 may be provided between the flange 321 and the first fixing rib 322. The first connecting rib 3212 may be used to connect the fixing flange 321 and the first fixing rib 322. One side of the first connecting rib 3212 may be connected to the flange 321. The other side of the first connecting rib 3212 may be connected to the first fixing rib 322. In this manner, the flange 321 and the first fixing rib 322 may be connected via opposite sides of the first connecting rib 3212, respectively. This improves the structural stability between the flange 321 and the first fixing rib 322, and thus the structural stability of the first fixing groove 3211, thereby stably clamping and securing the first fixing portion 333 within the first fixing groove 3211 and stably clamping and securing the first fixing portion 333 between the flange 321 and the first fixing rib 322.

[0155] In some embodiments, a plurality of first connecting ribs 3212 may be provided in the first fixing groove 3211. The plurality of first connecting ribs 3212 may be sequentially spaced apart along the first fixing groove 3211. The number and spacing of the first connecting ribs 3212 may be adjusted as needed and are not limited here.

[0156] like Figure 18 As shown, in some embodiments, a second connecting rib 3222 may be provided within the second fixing groove 3221. The second connecting rib 3222 may be provided between the first fixing rib 322 and the second fixing rib 323. The second connecting rib 3222 may be used to connect and secure the first fixing rib 322 and the second fixing rib 323. One side of the second connecting rib 3222 may be connected to the first fixing rib 322. The other side of the second connecting rib 3222 may be connected to the second fixing rib 323. In this manner, the first and second fixing ribs 322 and 323 may be connected via opposing sides of the second connecting rib 3222, improving the structural stability between the first and second fixing ribs 322 and 323, and thus improving the structural stability of the second fixing groove 3221. This facilitates stably clamping and securing the second fixing portion 334 within the second fixing groove 3221 and between the first and second fixing ribs 322 and 323.

[0157] In some embodiments, a plurality of second connecting ribs 3222 may be provided in the second fixing groove 3221. The plurality of second connecting ribs 3222 may be sequentially spaced apart along the second fixing groove 3221. The number and spacing of the second connecting ribs 3222 may be adjusted as needed and are not limited here.

[0158] like Figure 6 and Figure 17As shown, in some embodiments, a shrinkage groove 320 may be recessed on the top surface of the box cover 32. The groove bottom wall 3203 of the shrinkage groove 320 may occupy most of the area of ​​the top surface of the box cover 32. The groove sidewalls 3204 of the shrinkage groove 320 may be arranged near the peripheral edge of the box cover 32. A vacuum port 3201 may be provided on the groove bottom wall 3203 of the shrinkage groove 320. A positioning ring 326 may be convexly provided on the groove bottom wall 3203 of the shrinkage groove 320.

[0159] In some embodiments, the first securing rib 322 may be located below the sidewall 3204 of the reduced slot 320. The first securing rib 322 may extend downward from the bottom surface of the sidewall 3204 of the reduced slot 320. The second securing rib 323 may be located below the bottom wall 3203 of the reduced slot 320. The second securing rib 323 may extend downward from the bottom surface of the bottom wall 3203 of the reduced slot 320. In this way, during the integral injection molding process of the box cover 32, when the box cover 32 is cooled during injection molding, the first fixing rib 322 and the second fixing rib 323 cool down faster, causing the area of ​​the groove side wall 3204 of the shrinkage groove 320 corresponding to the first fixing rib 322 to shrink, which will only cause the groove side wall 3204 of the shrinkage groove 320 to move outward; at the same time, the area of ​​the groove bottom wall 3203 of the shrinkage groove 320 corresponding to the second fixing rib 323 to shrink, which will only cause the depth of the groove bottom wall 3203 of the shrinkage groove 320 to deepen, so that the surface of the shrinkage groove 320 remains flat, that is, the groove side wall 3204 and the groove bottom wall 3203 of the shrinkage groove 320 still remain flat, which is beneficial to improving the appearance of the box cover 32.

[0160] It should be noted that in the existing solution, the top surface of the box cover 32 is not provided with the shrinkage groove 320, or the first fixing rib 322 is not located below the groove side wall 3204 of the shrinkage groove 320, or the second fixing rib 323 is not located below the groove bottom wall 3203 of the shrinkage groove 320. Therefore, during the injection molding process, pits are likely to appear on the top surface of the box cover 32 at the positions corresponding to the first fixing rib 322 and the second fixing rib 323, affecting the appearance of the box cover 32.

[0161] like Figure 17 As shown, in some embodiments, the groove sidewalls 3204 of the shrinking groove 320 extend upwardly and obliquely from the edge of the groove bottom wall 3203 of the shrinking groove 320 toward the edge of the box cover 32. In this way, the groove sidewalls 3204 of the shrinking groove 320 are arranged obliquely, so that the groove sidewalls 3204 of the shrinking groove 320 can be more easily displaced outward when the box cover 32 is cooled after injection molding.

[0162] like Figure 18As shown, in some embodiments, the positioning grooves 302 can be circumferentially arranged near the edge of the bottom wall 3203 of the shrinking groove 320. The positioning grooves 302 can be provided in an area near the sidewalls 3204 of the bottom wall 3203 of the shrinking groove 320. When one vacuum fresh-keeping box 3 is stacked on top of another vacuum fresh-keeping box 3, the positioning ribs 301 of the vacuum fresh-keeping box 3 can cooperate with the positioning grooves 302, so that the positioning ribs 301 can be arranged near the first fixing ribs 322 and the second fixing ribs 323 of the vacuum fresh-keeping box 3 below. This allows the gravity of the upper vacuum fresh-keeping box 3 to be transferred to the circumferential sidewalls of the box body 31 below via the first fixing ribs 322 and the second fixing ribs 323, thereby improving the support strength of the lid 32 of the lower vacuum fresh-keeping box 3. In addition, the gravity of the upper vacuum fresh-keeping box 3 can make the sealing ring 33 more tightly clamped between the flange 321, the first fixing rib 322 and the second fixing rib 323 and the peripheral side wall of the box body 31, thereby helping to improve the sealing performance of the vacuum fresh-keeping box 3.

[0163] like Figure 14 As shown, in some embodiments, the end of the first reinforcing rib 3251 away from the stop rib 324 can be vertically connected to the second fixing rib 323. In this way, the vertical connection between the first reinforcing rib 3251 and the second fixing rib 323 can facilitate cleaning of the connection area between the first reinforcing rib 3251 and the second fixing rib 323.

[0164] In some embodiments, the end of the second reinforcing rib 3252 away from the annular rib 3253 can be vertically connected to the second fixing rib 323. In this way, the vertical connection between the second reinforcing rib 3252 and the second fixing rib 323 can facilitate cleaning of the connection area between the second reinforcing rib 3252 and the second fixing rib 323.

[0165] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A vacuum fresh-keeping box, characterized in that: include: A box body with an open top and a storage cavity formed therein; A box cover is fitted over the top opening of the box body to seal the storage cavity; the box cover comprises: A flange, the flange extending downward from the peripheral edge of the box cover, the flange being annular and circumferentially arranged around the peripheral side of the box cover; A first fixing rib is provided on the bottom surface of the box cover and extends downward; the first fixing rib is provided at intervals on the inner side of the flange; A second fixing rib is provided on the bottom surface of the box cover and extends downward; the second fixing rib is provided at intervals on the inner side of the first fixing rib; a sealing ring, provided between the peripheral edge of the box cover and the peripheral side wall of the box body, the sealing ring being used to seal the storage cavity; the sealing ring being clamped between the flange, the first fixing rib, the second fixing rib and the peripheral side wall of the box body; A shrinkage groove is recessed on the top surface of the box cover, the first fixing rib is located below the side wall of the shrinkage groove, and the second fixing rib is located below the bottom wall of the shrinkage groove.

2. The vacuum fresh-keeping container according to claim 1, wherein: The groove side wall of the shrinkage groove is arranged to extend obliquely upward from the edge of the groove bottom wall of the shrinkage groove toward the edge of the box cover.

3. The vacuum fresh-keeping container according to claim 1, wherein: The sealing ring comprises: a transverse wall provided on the top of the peripheral side wall of the box body, wherein the outer end of the transverse wall is clamped between the bottom of the flange and the top of the peripheral side wall of the box body; A longitudinal wall is provided inside the box body, and the longitudinal wall extends downward from the inner end of the transverse wall; a first fixing portion protruding from the top surface of the transverse wall; a second fixing portion, protruding from the top surface of the transverse wall and spaced apart from the inner side of the first fixing portion; A first fixing groove is formed between the flange and the first fixing rib, and the first fixing portion is clamped and fixed in the first fixing groove; A second fixing groove is formed between the first fixing rib and the second fixing rib, and the second fixing portion is clamped between the first fixing rib and the second fixing rib; The bottom end of the second fixing rib extends into and is arranged inside the box body, and the longitudinal wall is clamped between the second fixing rib and the inner wall of the box body.

4. The vacuum fresh-keeping container according to claim 3, wherein: The longitudinal wall is spaced apart from the inner wall of the box body, and an elastic wall is protruded from the longitudinal wall toward the peripheral side wall of the box body; The elastic wall elastically abuts against the inner wall of the box body, so that the longitudinal wall is tightly attached to the second fixing rib.

5. The vacuum fresh-keeping container according to claim 3, wherein: A sealing rib is convexly provided on the bottom surface of the transverse wall, and the sealing rib is clamped between the bottom surface of the transverse wall and the top surface of the peripheral side wall of the box body.

6. The vacuum fresh-keeping container according to claim 3, wherein: A first connecting rib is provided in the first fixing groove, one side of the first connecting rib is connected to the flange, and the other side of the first connecting rib is connected to the first fixing rib; A second connecting rib is provided in the second fixing groove, one side of the second connecting rib is connected to the first fixing rib, and the other side of the second connecting rib is connected to the second fixing rib.

7. The vacuum fresh-keeping container according to claim 1, wherein: The box cover also includes: A vacuum port is provided on the top surface of the box cover, and the vacuum port passes through the box cover from top to bottom; A stop rib protrudes from the bottom surface of the box cover, and the stop rib is arranged around the circumference of the bottom of the vacuum port; an annular rib protruding from the bottom surface of the box cover, wherein the annular rib and the stop rib are spaced apart; a first reinforcing rib protruding from the bottom surface of the box cover, wherein a plurality of the first reinforcing ribs are provided and arranged circumferentially and spaced apart around the circumference of the stop rib; one end of the first reinforcing rib is connected to the stop rib, and the other end is connected to the second fixing rib; The second reinforcing rib is protruded from the bottom surface of the box cover. There are multiple second reinforcing ribs, and the multiple second reinforcing ribs are arranged circumferentially around the annular rib. One end of the first reinforcing rib is connected to the annular rib, and the other end is connected to the second fixing rib.

8. A refrigeration device, characterized in that: include: A box body, which forms an outer shell of the refrigeration equipment, and a refrigeration compartment is formed in the box body; A door is provided on the box body and is used to open and close the refrigeration compartment; A vacuum fresh-keeping box is provided on the door; the vacuum fresh-keeping box is the vacuum fresh-keeping box according to any one of claims 1 to 5.

9. The refrigeration equipment according to claim 8, characterized in that The refrigeration equipment comprises: A door shelf, provided on the side wall of the door facing the refrigeration compartment; The vacuum preservation box is detachably arranged on the door shelf.

10. The refrigeration equipment according to claim 8, characterized in that The refrigeration equipment comprises: A vacuum pumping assembly is used to vacuum the vacuum preservation box; the vacuum pumping assembly includes: A vacuum joint is reversibly arranged on the door and above the vacuum fresh-keeping box; A vacuum pump is arranged inside the box door; A vacuum pumping pipeline is provided in the chamber door, one end of the vacuum pumping pipeline is connected to the vacuum pump, and the other end is connected to the vacuum pumping connector; When the vacuum joint is turned over, the vacuum joint can be connected to the storage cavity, and the vacuum pump can vacuum the storage cavity through the vacuum pipeline and the vacuum joint.

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