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 vacuumizing opening is formed in the box cover; the sealing surface is arranged on the peripheral side of the top of the vacuumizing opening in a surrounding manner; the vacuum air valve comprises a cylinder part which has elasticity and can stretch out and draw back in the axial direction of the cylinder part; the sealing part is used for abutting against the sealing surface; the abutting part is used for abutting against the bottom opening of the vacuumizing opening; in the natural state, the distance between the sealing part and the abutting part is smaller than the height of the vacuumizing opening, so that the sealing part is tightly attached to the sealing face, the sealing performance of the vacuum air valve is improved, and then the sealing performance of the vacuum preservation box can be effectively improved; when the vacuum air valve is subjected to upward force, the cylinder part can be lengthened, so that the distance between the sealing part and the abutting part is larger than the height of the vacuumizing opening, a second ventilation gap communicated with the first ventilation gap is formed between the sealing part and the sealing face, and then the vacuum preservation box can be vacuumized or decompressed.

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 fresh-keeping box, which includes a box body, a lid, and a vacuum air valve, is located on the door. The lid is located on the top of the box body and is typically provided with a vacuum port for evacuating the interior of the box body. The vacuum air valve is located at the vacuum port and is used to seal the vacuum port. Existing vacuum fresh-keeping boxes often have loose vacuum air valves on their lids, which can easily cause air leaks and result in poor sealing. Utility Model Content

[0005] The utility model aims to provide a vacuum fresh-keeping box and a refrigeration device, so as to improve the sealing performance of the vacuum air valve 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, detachably covering the top of the box body to seal the storage cavity;

[0010] A vacuum port is provided on the box cover and passes through the box cover vertically;

[0011] A sealing surface is provided on the top surface of the box cover, and the sealing surface is arranged around the circumference of the top of the vacuum port;

[0012] A vacuum air valve is used to seal the vacuum port, and the vacuum air valve includes:

[0013] The column portion is disposed in the vacuum port and has a first ventilation gap between the column portion and the peripheral side wall of the vacuum port, wherein the first ventilation gap is in communication with the storage cavity; the column portion is elastic and can be expanded and contracted along its axial direction;

[0014] a sealing portion, which is annular and circumferentially arranged around the top of the column portion, and is used to abut against the sealing surface;

[0015] an abutment portion provided on a peripheral side of the bottom of the column portion, the abutment portion being used to abut against the bottom opening of the vacuum port;

[0016] Wherein, the vacuum air valve is configured as follows:

[0017] In a natural state, the distance between the sealing portion and the abutting portion is smaller than the height of the vacuum port, so that the sealing portion is in close contact with the sealing surface;

[0018] When the vacuum air valve is subjected to an upward force, the column portion can be stretched so that the distance between the sealing portion and the abutting portion is greater than the height of the vacuum port, so that the sealing portion is separated from the sealing surface, and a second ventilation gap connected to the first ventilation gap is formed between the sealing portion and the sealing surface.

[0019] The above technical solution has the following advantages or beneficial effects: in a natural state, the vacuum air valve satisfies the condition that the distance between the sealing portion and the abutting portion is less than the height of the vacuum port. In this way, when the vacuum air valve is installed at the vacuum port, the sealing portion can be abutted against the sealing surface, and the abutting portion can be abutted against the bottom opening of the vacuum port, so that the distance between the sealing portion and the abutting portion is lengthened to the height of the vacuum port, thereby making the column portion in an elongated state. At this time, the elastic force generated by the elongated deformation of the column portion can make the sealing portion tightly adhere to the sealing surface, thereby improving the sealing performance of the vacuum air valve, and thus effectively improving the sealing performance of the vacuum preservation box.

[0020] When the vacuum air valve is evacuated or the pressure is released, the vacuum air valve is subjected to an upward force, and the column portion can be stretched so that the distance between the sealing portion and the abutting portion is greater than the height of the vacuum port, so that a second ventilation gap is formed between the sealing portion and the sealing surface. By connecting the second ventilation gap with the first ventilation gap, the interior of the vacuum preservation box can be evacuated or the pressure is released.

[0021] In some embodiments of the present application, a stop rib is protruding from the bottom of the box cover, and the stop rib is arranged around the circumference of the bottom of the vacuum port; the abutting portion abuts against the stop rib.

[0022] The above technical solution has the following advantages or beneficial effects: when the vacuum port is evacuated or depressurized, the sealing portion can be forced to move upward, and the abutting portion can abut against the stop ribs around the bottom opening of the vacuum port to prevent the vacuum air valve from falling out of the vacuum port.

[0023] In some embodiments of the present application, a plurality of stop portions are protruding from the bottom of the stop rib, and the plurality of stop portions are circumferentially spaced around the circumference of the bottom of the vacuum port; ventilation grooves are formed between adjacent stop portions; and the ventilation grooves connect the first ventilation gap and the storage cavity.

[0024] The above technical solution has the following advantages or beneficial effects: when the vacuum port is evacuated or depressurized, the abutment portion can abut against the stop portion at the bottom of the stop rib, so that the first ventilation gap remains connected to the storage cavity through the ventilation groove, and the gas in the storage cavity can be extracted by the vacuum joint through the ventilation groove, the first ventilation gap, and the second ventilation gap in sequence, thereby realizing vacuuming of the inside of the vacuum preservation box.

[0025] In some embodiments of the present application, a positioning ring is protruded on the top surface of the box cover, and the positioning ring is arranged around the vacuum port and the sealing surface.

[0026] The above technical solution has the following advantages or beneficial effects: when the vacuum pump is drawing a vacuum, the vacuum joint can be sealed against the positioning ring, so that the air inside the vacuum preservation box can smoothly flow into the vacuum joint through the vacuum port and be drawn out by the vacuum pump, thereby achieving vacuum drawing inside the vacuum preservation box.

[0027] In some embodiments of the present application, a sealing groove is recessed on the top surface of the box cover, and the sealing groove is arranged around the circumference of the top of the vacuum port; the sealing surface is formed on the bottom surface of the sealing groove; the sealing portion is arranged within the outline of the sealing groove; and the positioning ring is arranged around the circumference of the sealing groove.

[0028] The above technical solution has the following advantages or beneficial effects: by arranging the sealing part in the sealing groove, the height of the vacuum air valve can be reduced so that the vacuum air valve does not protrude from the top surface of the positioning ring, thereby helping to reduce the height requirement of the positioning ring.

[0029] In some embodiments of the present application, the vacuum air valve includes: an indicator bubble, which is arranged at the top of the columnar portion; a center hole is provided in the columnar portion, and the bottom end of the center hole is connected to the storage cavity; the indicator bubble is closed and connected to the top of the center hole; in a natural state, the indicator bubble protrudes outward from the top of the columnar portion; when the storage cavity is evacuated, the indicator bubble is sunken into the top of the columnar portion.

[0030] The above-mentioned technical solution has the following advantages or beneficial effects: in a natural state, the indicator bubble protrudes from the top of the columnar portion to remind the user that the vacuum preservation box is not in a vacuum state. When the storage cavity is vacuumed, the air pressure inside the storage cavity is low, and the air pressure inside the storage cavity is lower than the air pressure outside the vacuum preservation box. Under the action of the pressure difference between the inside and outside of the vacuum air valve, the indicator bubble can be sunken into the top of the columnar portion. In this way, the user can be reminded that the vacuum preservation box is in a low-pressure state or a vacuum state. In addition, the user can also roughly judge the vacuum degree of the vacuum preservation box based on the depth of the sunken indicator bubble, thereby improving the convenience of user use.

[0031] In some embodiments of the present application, the vacuum air valve includes: a handle portion, which is annular and circumferentially arranged on the circumferential side of the top of the column portion, and the handle portion is arranged at intervals above the sealing portion; a handle groove, formed between the handle portion and the sealing portion; the handle groove is annular and circumferentially recessed on the circumferential wall of the top of the column portion.

[0032] The above-mentioned technical solution has the following advantages or beneficial effects: when the vacuum preservation box needs to be opened, the user can hold the handle groove and manually lift the handle part, so that the vacuum air valve is subjected to an upward force, and the sealing part can be moved upward. The column part is stretched by the force, so that the distance between the sealing part and the abutting part is greater than the height of the vacuum port, so that a second ventilation gap can be formed between the bottom surface of the sealing part and the sealing surface. The air outside the vacuum preservation box can flow into the storage cavity inside the vacuum preservation box through the second ventilation gap and the first ventilation gap, thereby realizing the pressure relief of the vacuum preservation box and allowing the lid to be easily opened.

[0033] According to another aspect of the present invention, the present invention provides a refrigeration device, which includes: a box body, which forms the outer shell of the refrigeration device, and a refrigeration chamber is formed in the box body; a box door, which is provided on the box body and is used to open and close the refrigeration chamber; a vacuum preservation box, which is provided on the box door; the vacuum preservation box adopts the above-mentioned vacuum preservation box.

[0034] The above technical solution has the following advantages or beneficial effects: through the elastic design of the column part of the vacuum air valve, combined with the spacing design between the sealing part and the abutting part of the vacuum air valve, it is beneficial to improve the sealing of the molded box lid, and it is beneficial to improve the overall sealing of the vacuum preservation box, which in turn is beneficial to improving the product performance of the refrigeration equipment.

[0035] 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.

[0036] 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.

[0037] 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 tube, which is arranged inside the box door, one end of the vacuum pump 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 vacuum port, and the vacuum pump can vacuum the storage cavity through the vacuum pump tube, the vacuum pump connector and the vacuum port.

[0038] 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.

[0039] Details of other embodiments are included in the detailed description and accompanying drawings.

[0040] 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

[0041] Figure 1 It is a structural schematic diagram of refrigeration equipment in some embodiments of the present utility model.

[0042] Figure 2 yes Figure 1 Schematic diagram of the middle box door structure.

[0043] Figure 3 yes Figure 2 The schematic diagram of the structure of the box door in another state is shown.

[0044] Figure 4 yes Figure 3 The structural diagram of the vacuum preservation box shown.

[0045] Figure 5 yes Figure 4 A schematic diagram of the decomposition structure.

[0046] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle box cover.

[0047] Figure 7is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 6

[0048] Figure 8 is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 7

[0049] Figure 9 is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 4

[0050] Figure 10 is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 9

[0051] Figure 11 is a layout sectional view of the vacuum fresh-keeping box shown in Figure 3

[0052] Figure 12 is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 11

[0053] Figure 13 is a sectional view of the box cover shown in Figure 7

[0054] Figure 14 is a partial enlarged structural schematic view of the vacuum fresh-keeping box shown in Figure 13

[0055] Figure 15 is a structural schematic view of the vacuum air valve in a natural state shown in Figure 10

[0056] Figure 16 is a structural schematic view of the vacuum air valve in a vacuumizing state shown in Figure 12

[0057] Reference signs are explained as follows: 1, box body; 2, box door; 21, door shell; 22, door tank; 221, tank rib; 23, door shelf; 3, vacuum fresh-keeping box; 31, box body; 310, storage cavity; 32, box cover; 321, vacuumizing port; 322, sealing surface; 323, stop rib; 3231, stop portion; 3232, air vent groove; 324, reinforcing rib; 325, positioning ring; 326, sealing groove; 33, sealing ring; 34, vacuum air valve; 341, columnar portion; 342, sealing portion; 343, abutting portion; 344, indicating bubble; 345, center hole; 346, handle portion; 347, handle groove; 4, vacuumizing connector; 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 3As 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 pump assembly may not include the vacuum pump connector 4. The vacuum pump may also be directly connected to the interior of the vacuum preservation box 3 through a vacuum pump 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 A schematic diagram of the decomposition structure.

[0096] like Figure 5 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.

[0097] In some embodiments, a vacuum port 321 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 321 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 321 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 321.

[0098] It should be noted that in some other embodiments, the vacuum port 321 may not be provided on the top surface of the vacuum fresh-keeping box 3. The vacuum port 321 may also be provided 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 disconnection of the vacuum connector 4 with the vacuum port 321.

[0099] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle box cover 32. Figure 7 yes Figure 6 A schematic diagram of the decomposition structure.

[0100] like Figure 5 、 Figure 6 and Figure 7 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.

[0101] 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.

[0102] Figure 8 is a partial enlarged structural schematic view of Figure 7 . Figure 9 is a partial enlarged structural schematic view of Figure 4 . Figure 10 is a sectional view of the vacuum preservation box 3 shown in Figure 9 .

[0103] As shown in Figure 8 , Figure 9 and Figure 10 , in some embodiments, the vacuum preservation box 3 can include a vacuum air valve 34. The vacuum air valve 34 can be disposed at the vacuum port 321. The vacuum air valve 34 can be used to seal the vacuum port 321, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0104] In some embodiments, the vacuum air valve 34 can include a column portion 341. The column portion 341 can be disposed at the vacuum port 321. The outer diameter of the column portion 341 can be smaller than the inner diameter of the vacuum port 321, so that a first air gap (not labeled in the figure) is formed between the outer wall of the column portion 341 and the inner wall of the vacuum port 321. When the vacuum adapter 4 performs vacuumization at the vacuum port 321, the column portion 341 can be forced to move upward, and the air inside the vacuum preservation box 3 can be extracted through the first air gap, thereby forming a vacuum environment inside the vacuum preservation box 3.

[0105] As shown in Figure 10 , in some embodiments, the vacuum air valve 34 can include a sealing portion 342. The sealing portion 342 can be disposed at the top of the vacuum air valve 34. The sealing portion 342 can be disposed at the circumferential side of the top of the column portion 341. The column portion 341 is annular and circumferentially arranged at the circumferential side of the top of the column portion 341. The top surface of the box cover 32 can form a sealing surface 322. The sealing surface 322 can be circumferentially arranged at the circumferential side of the top opening of the vacuum port 321. The sealing portion 342 can protrude out of the top of the vacuum port 321. The sealing portion 342 can be disposed above the sealing surface 322. The sealing portion 342 can be used to abut against the sealing surface 322 to seal the vacuum port 321, thereby sealing the storage cavity 310 inside the vacuum preservation box 3.

[0106] Figure 11 is a layout sectional view shown in Figure 3 . Figure 12 is a partial enlarged structural schematic view of Figure 11 .

[0107] As shown in Figure 12As shown, in some embodiments, when the vacuum joint 4 is vacuuming the vacuum port 321, 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 322. 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.

[0108] 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 322 under the action of the internal and external pressure difference, thereby sealing the vacuum extraction port 321 and further sealing the storage cavity 310 inside the vacuum preservation box 3.

[0109] 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 322. 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.

[0110] like Figure 10 and Figure 12 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 321. When the vacuum port 321 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 side wall of the bottom opening of the vacuum port 321, thereby preventing the vacuum air valve 34 from falling out of the vacuum port 321.

[0111] In some embodiments, when the vacuum port 321 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 321. At this time, the distance between the sealing portion 342 and the abutting portion 343 is greater than the height of the vacuum port 321, so a second ventilation gap can be formed between the bottom surface of the sealing portion 342 and the sealing surface 322, so that the second ventilation gap is connected to the first ventilation gap.

[0112] 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 .

[0113] like Figure 8 and Figure 10As shown, in some embodiments, a stop rib 323 may be protruded from the bottom of the box cover 32. The stop rib 323 is arranged around the circumference of the bottom opening of the vacuum port 321. The stop rib 323 can serve as the circumferential side wall of the bottom opening of the vacuum port 321. In this way, when the vacuum port 321 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 323 around the bottom opening of the vacuum port 321, thereby preventing the vacuum air valve 34 from falling out of the vacuum port 321.

[0114] In some embodiments, the bottom of the stop rib 323 may be provided with a plurality of stop portions 3231. The plurality of stop portions 3231 may be arranged circumferentially spaced apart on the stop rib 323. The plurality of stop portions 3231 may be arranged circumferentially spaced apart around the bottom of the vacuum port 321. Ventilation grooves 3232 may be formed between adjacent stop portions 3231. The venting grooves 3232 may connect the first ventilation gap and the storage chamber 310. In this way, when the vacuum port 321 is evacuated or depressurized, the abutment portion 343 may abut against the stop portion 3231 at the bottom of the stop rib 323, maintaining the first ventilation gap in communication with the storage chamber 310 through the venting grooves 3232. This allows the gas within the storage chamber 310 to be drawn out of the vacuum joint 4 through the venting grooves 3232, the first ventilation gap, and the second ventilation gap, thereby achieving vacuuming of the interior of the vacuum storage box 3.

[0115] In addition, when the vacuum port 321 is depressurized, the abutment portion 343 can also abut against the stop portion 3231 at the bottom of the stop rib 323, so that the first ventilation gap remains connected to the storage cavity 310 through the ventilation groove 3232, 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 3232 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.

[0116] It should be noted that in some other embodiments, the bottom of the stop rib 323 may not be provided with the stop portion 3231 and the vent groove 3232, and a vent hole connecting the first vent gap and the storage cavity 310 may be provided on the abutting 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.

[0117] like Figure 7 and Figure 8 As shown, in some embodiments, a reinforcing rib 324 may be provided on the bottom surface of the box cover 32. A plurality of reinforcing ribs 324 may be provided. Multiple reinforcing ribs 324 can increase the structural strength of the box cover 32.

[0118] In some embodiments, a plurality of reinforcing ribs 324 may be arranged around the circumference of the stop rib 323. One end of the reinforcing rib 324 may be connected to the stop rib 323. The other end of the reinforcing rib 324 may be connected to the circumferential edge of the bottom surface of the box cover 32. In this way, the structural strength of the box cover 32 can be further improved by the plurality of reinforcing ribs 324 and the stop rib 323.

[0119] like Figure 8 and Figure 12 As shown, in some embodiments, a positioning ring 325 may be protruded from the top surface of the box cover 32. The positioning ring 325 may be arranged around the circumference of the vacuum port 321.

[0120] 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 325, isolating the interior of the positioning ring 325 from the exterior, and then the vacuum joint 4 can dock with the vacuum port 321 inside the positioning ring 325. 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 321 and be pumped out by the vacuum pump, thus achieving vacuumization of the interior of the vacuum fresh-keeping box 3.

[0121] like Figure 11 and Figure 12 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 325, thereby ensuring a tight seal between the vacuum joint 4 and the vacuum port 321, allowing the air inside the vacuum preservation container 3 to be smoothly extracted.

[0122] Figure 13 yes Figure 7 A cross-sectional view of the cover 32 is shown. Figure 14 yes Figure 13 Schematic diagram of the local enlarged structure.

[0123] like Figure 12 and Figure 14 As shown, in some embodiments, a sealing groove 326 may be recessed on the top surface of the box cover 32, and the sealing groove 326 may be arranged around the circumference of the top opening of the vacuum port 321. The sealing surface 322 may be formed on the bottom surface of the sealing groove 326. The sealing portion 342 may be provided within the contour of the sealing groove 326. The positioning ring 325 may be arranged around the circumference of the sealing groove 326. In this way, by arranging the sealing portion 342 within the sealing groove 326, it is possible to reduce the height of the vacuum air valve 34 so that the vacuum air valve 34 does not protrude from the top surface of the positioning ring 325, thereby helping to reduce the height requirement of the positioning ring 325.

[0124] Figure 15 yes Figure 10 The structure diagram of the vacuum air valve 34 in the natural state is shown. Figure 16 yes Figure 12 The structure diagram of the vacuum air valve 34 shown is in the vacuum state.

[0125] like Figure 15 and Figure 16 , and combined with Figure 10 and Figure 12 As shown, in some embodiments, the column portion 341 can be made of an elastic material. The column portion 341 can be elastic, so that the column portion 341 can be stretched and contracted along its axial direction, thereby changing the distance between the sealing portion 342 and the abutting portion 343 at both ends of the column portion 341. For example, in a natural state, the distance between the sealing portion 342 and the abutting portion 343 is L1, as shown in FIG. Figure 15 In the vacuum state, the vacuum air valve 34 is subjected to an upward force, the sealing portion 342 can be forced to move upward, and the abutting portion 343 can abut against the bottom opening of the vacuum port 321, so that the column portion 341 can be stretched by the force. At this time, the distance between the sealing portion 342 and the abutting portion 343 is L2, as shown. Figure 12 and Figure 16 Then L1 and L2 can satisfy the condition: L1<L2.

[0126] It should be noted that, in some other embodiments, the entire vacuum air valve 34 can be made of an elastic material, so that the entire vacuum air valve 34 can be elastic.

[0127] like Figure 10 、 Figure 14 and Figure 15 As shown, in some embodiments, the height of the vacuum port 321 on the box cover 32 is H. The height H of the vacuum port 321 on the box cover 32 can be the distance between the sealing surface 322 and the bottom of the stopper 3231, as shown in FIG. Figure 14 shown.

[0128] In its natural state, the vacuum air valve 34 can satisfy the condition: L1 < H. Thus, when the vacuum air valve 34 is installed at the vacuum port 321, the sealing portion 342 of the vacuum air valve 34 can abut against the sealing surface 322, and the abutting portion 343 of the vacuum air valve 34 can abut against the bottom opening of the vacuum port 321, so that the distance between the sealing portion 342 and the abutting portion 343 is extended to H, thereby causing the column portion 341 to be in an elongated state. At this time, the elastic force generated by the elongated deformation of the column portion 341 can cause the sealing portion 342 to tightly adhere to the sealing surface 322, improving the sealing performance of the vacuum air valve 34, and thus effectively improving the sealing performance of the vacuum storage container 3.

[0129] It should be noted that, in a natural state, the specific parameter L1 of the distance between the sealing portion 342 and the abutting portion 343 can be adjusted as needed under the condition that L1<H, and no specific limitation is imposed herein.

[0130] like Figure 12 and Figure 16 As shown, in some embodiments, when the vacuum connector 4 evacuates the vacuum port 321, the vacuum valve 34 is subjected to an upward force, and the column portion 341 can be stretched, so that the distance between the sealing portion 342 and the abutting portion 343 satisfies the condition: L2>H. At this time, the abutting portion 343 can maintain contact with the bottom opening of the vacuum port 321, separating the sealing portion 342 from the sealing surface 322, thereby forming a second ventilation gap between the sealing portion 342 and the sealing surface 322, which is connected to the first ventilation gap. In this way, the second ventilation gap can be connected to the storage cavity 310 inside the vacuum storage box 3 through the first ventilation gap, and the storage cavity 310 inside the vacuum storage box 3 can be connected to the vacuum connector 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 connector 4, thereby vacuuming the interior of the vacuum storage box 3.

[0131] It should be noted that, in the vacuum state, the specific parameter L2 of the distance between the sealing portion 342 and the abutting portion 343 can be adjusted as needed under the condition of satisfying L2>H, and no specific limitation is made here.

[0132] like Figure 10 and Figure 15 As shown, in some embodiments, the vacuum air valve 34 may include an indicator bubble 344. The indicator bubble 344 may be disposed at the top of the cylindrical portion 341. The indicator bubble 344 may be arc-shaped and protrude from the top of the cylindrical portion 341. The cylindrical portion 341 may have a central hole 345 defined therein. The bottom end of the central hole 345 may communicate with the storage chamber 310. The indicator bubble 344 may be sealed and connected to the top end of the central hole 345.

[0133] In a natural state, the indicator bubble 344 may protrude from the top of the column portion 341 , thereby reminding the user that the vacuum preservation box 3 is not in a vacuum state.

[0134] When the storage chamber 310 is evacuated, the air pressure inside the storage chamber 310 is low, less than the air pressure outside the vacuum storage box 3. Due to the pressure differential between the inside and outside of the vacuum air valve 34, the indicator bubble 344 can be sunken into the top of the column 341. This reminds the user that the vacuum storage box 3 is in a low-pressure or vacuum state. Furthermore, the user can roughly determine the vacuum level of the vacuum storage box 3 based on the depth of the indicator bubble 344's indentation, thereby improving user convenience.

[0135] like Figure 10 and Figure 16 As shown, in some embodiments, the vacuum air valve 34 may include a handle portion 346. The handle portion 346 may be annular and circumferentially arranged around the top of the column portion 341. The handle portion 346 may be arranged above the sealing portion 342 at intervals. The handle portion 346 may be located on the outside of the vacuum port 321. A handle groove 347 may be formed between the handle portion 346 and the sealing portion 342. The handle groove 347 is annular and circumferentially recessed on the peripheral wall of the top of the column portion 341. In this way, when the vacuum preservation box 3 needs to be opened, the user can hold the handle groove 347 and manually lift the handle part 346, so that the vacuum air valve 34 is subjected to an upward force, which can then make the sealing part 342 move upward, and the column part 341 is stretched by the force, so that the distance between the sealing part 342 and the abutting part 343 is greater than the height H of the vacuum port 321, so that a second ventilation gap can be formed between the bottom surface of the sealing part 342 and the sealing surface 322. 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 realizing the pressure relief of the vacuum preservation box 3 and allowing the box cover 32 to be easily opened.

[0136] 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, detachably covering the top of the box body to seal the storage cavity; A vacuum port is provided on the box cover and passes through the box cover vertically; A sealing surface is provided on the top surface of the box cover, and the sealing surface is arranged around the circumference of the top of the vacuum port; A vacuum air valve is used to seal the vacuum port, and the vacuum air valve includes: The column portion is disposed in the vacuum port and has a first ventilation gap between the column portion and the peripheral side wall of the vacuum port, wherein the first ventilation gap is in communication with the storage cavity; the column portion is elastic and can be expanded and contracted along its axial direction; a sealing portion, which is annular and circumferentially arranged around the top of the column portion, and is used to abut against the sealing surface; an abutment portion provided on a peripheral side of the bottom of the column portion, the abutment portion being used to abut against the bottom opening of the vacuum port; Wherein, the vacuum air valve is configured as follows: In a natural state, the distance between the sealing portion and the abutting portion is smaller than the height of the vacuum port, so that the sealing portion is in close contact with the sealing surface; When the vacuum air valve is subjected to an upward force, the column portion can be stretched so that the distance between the sealing portion and the abutting portion is greater than the height of the vacuum port, so that the sealing portion is separated from the sealing surface, and a second ventilation gap connected to the first ventilation gap is formed between the sealing portion and the sealing surface.

2. The vacuum fresh-keeping container according to claim 1, wherein: A stop rib is protruding from the bottom of the box cover, and the stop rib is arranged around the circumference of the bottom of the vacuum port; The abutting portion abuts against the stopping rib.

3. The vacuum fresh-keeping container according to claim 2, wherein: A plurality of stoppers are protruding from the bottom of the stop rib, and the plurality of stoppers are circumferentially spaced and arranged around the circumference of the bottom of the vacuum port; ventilation grooves are formed between adjacent stoppers; The ventilation groove communicates with the first ventilation gap and the storage cavity.

4. The vacuum fresh-keeping container according to claim 1, wherein: A positioning ring is convexly provided on the top surface of the box cover, and the positioning ring is arranged around the vacuum port and the peripheral side of the sealing surface.

5. The vacuum fresh-keeping container according to claim 4, wherein: A sealing groove is concavely provided on the top surface of the box cover, and the sealing groove is arranged around the circumference of the top of the vacuum port; The sealing surface is formed on the bottom surface of the sealing groove; the sealing portion is arranged within the contour of the sealing groove; and the positioning ring is arranged around the circumference of the sealing groove.

6. The vacuum fresh-keeping container according to claim 1, wherein: The vacuum air valve comprises: an indicator bubble, disposed on the top of the column; A central hole is provided in the cylindrical portion, and a bottom end of the central hole is communicated with the storage cavity; The indicator bubble is sealed and connected to the top of the central hole; In a natural state, the indicator bubble protrudes outward from the top of the column; When the storage cavity is evacuated, the indicator bubble is sunken into the top of the column.

7. The vacuum fresh-keeping container according to claim 1, wherein: The vacuum air valve comprises: A handle portion is annular and circumferentially arranged around the top of the column portion, and the handle portion is spaced above the sealing portion; A handle groove is formed between the handle portion and the sealing portion; the handle groove is annular and circumferentially concavely arranged on the peripheral wall of the top of the column portion.

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 provided inside the box door; A vacuum pumping tube is provided in the box door, one end of the vacuum pumping tube 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 docked with the vacuum port, and the vacuum pump can vacuum the storage cavity through the vacuum tube, the vacuum joint and the vacuum port.

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